mirror of https://github.com/Nheko-Reborn/nheko
Nicolas Werner
3 years ago
parent
926c7a89ad
commit
c13946aa5e
@ -0,0 +1,6 @@ |
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[submodule "subprojects/mtxclient"] |
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path = subprojects/mtxclient |
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url = https://nheko.im/nheko-reborn/mtxclient.git |
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[submodule "subprojects/blurhash"] |
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path = subprojects/blurhash |
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url = https://nheko.im/nheko-reborn/blurhash.git |
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@ -0,0 +1,259 @@ |
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project( |
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'nheko', |
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'cpp', |
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license: 'GPL-3.0-or-later', |
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version: '0.9.0', |
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default_options: ['cpp_std=c++17', 'b_pie=true', 'default_library=static'] |
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) |
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qt5 = import('qt5') |
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qt5_dep = dependency('qt5', modules: ['Core', 'Qml', 'Quick', 'QuickWidgets', 'Widgets', 'DBus', 'Multimedia', 'Svg'], include_type: 'system') |
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inc = include_directories('src', 'includes', 'third_party/cpp-httplib-0.5.12') |
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deps = [ |
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qt5_dep, |
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dependency('mtxclient', static: true, version : '>=0.6.0', fallback: ['mtxclient', 'matrix_client_dep']), |
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dependency('blurhash'), |
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dependency('spdlog'), |
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dependency('cmark'), |
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dependency('lmdb'), |
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dependency('Qt5Keychain'), |
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dependency('threads'), |
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] |
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single_app_dep = subproject('SingleApplication-3.3.0').get_variable('singleapplication_dep') |
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deps += [single_app_dep] |
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compiler = meson.get_compiler('cpp') |
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backtrace_check = '''#include<execinfo.h> |
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#ifndef HAVE_BACKTRACE_SYMBOLS_FD |
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#error "No backtrace support" |
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#endif |
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void func() { |
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void *array[50]; |
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size_t size = backtrace(array, 50); |
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backtrace_symbols_fd(array, size, STDERR_FILENO); |
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} |
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''' |
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backtrace_exists = compiler.links(backtrace_check) |
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conf_data = configuration_data() |
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conf_data.set('PROJECT_VERSION', meson.project_version()) |
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conf_data.set('HOST_SYSTEM_NAME', host_machine.system()) |
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conf_data.set10('HAVE_BACKTRACE_SYMBOLS_FD', backtrace_exists) |
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conf_data.set10('SPDLOG_DEBUG_ON', get_option('buildtype') == 'debug') |
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configure_file(input : 'meson/nheko.h', |
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output : 'config_nheko.h', |
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configuration : conf_data) |
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vcs_tag(input: 'meson/version.h', output: 'nheko_version.h', replace_string: '@PROJECT_VERSION@') |
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moc_files = qt5.preprocess(moc_headers : |
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[ |
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# Dialogs |
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'src/dialogs/CreateRoom.h', |
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'src/dialogs/FallbackAuth.h', |
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'src/dialogs/ImageOverlay.h', |
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'src/dialogs/Logout.h', |
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'src/dialogs/PreviewUploadOverlay.h', |
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'src/dialogs/ReCaptcha.h', |
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|
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# Emoji |
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'src/emoji/EmojiModel.h', |
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'src/emoji/Provider.h', |
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# Timeline |
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'src/timeline/CommunitiesModel.h', |
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'src/timeline/EventStore.h', |
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'src/timeline/InputBar.h', |
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'src/timeline/Reaction.h', |
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'src/timeline/TimelineViewManager.h', |
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'src/timeline/TimelineModel.h', |
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'src/timeline/DelegateChooser.h', |
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'src/timeline/Permissions.h', |
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'src/timeline/RoomlistModel.h', |
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|
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# UI components |
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'src/ui/Badge.h', |
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'src/ui/FlatButton.h', |
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'src/ui/FloatingButton.h', |
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'src/ui/InfoMessage.h', |
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'src/ui/Label.h', |
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'src/ui/LoadingIndicator.h', |
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'src/ui/MxcAnimatedImage.h', |
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'src/ui/MxcMediaProxy.h', |
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'src/ui/Menu.h', |
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'src/ui/NhekoCursorShape.h', |
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'src/ui/NhekoDropArea.h', |
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'src/ui/NhekoGlobalObject.h', |
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'src/ui/OverlayWidget.h', |
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'src/ui/RaisedButton.h', |
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'src/ui/Ripple.h', |
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'src/ui/RippleOverlay.h', |
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'src/ui/RoomSettings.h', |
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'src/ui/SnackBar.h', |
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'src/ui/TextField.h', |
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'src/ui/TextLabel.h', |
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'src/ui/Theme.h', |
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'src/ui/ThemeManager.h', |
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'src/ui/ToggleButton.h', |
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'src/ui/UIA.h', |
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'src/ui/UserProfile.h', |
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|
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'src/voip/CallDevices.h', |
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'src/voip/CallManager.h', |
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'src/voip/WebRTCSession.h', |
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'src/encryption/DeviceVerificationFlow.h', |
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'src/encryption/Olm.h', |
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'src/encryption/SelfVerificationStatus.h', |
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'src/encryption/VerificationManager.h', |
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'src/notifications/Manager.h', |
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'src/AvatarProvider.h', |
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'src/BlurhashProvider.h', |
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'src/CacheCryptoStructs.h', |
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'src/Cache_p.h', |
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'src/ChatPage.h', |
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'src/Clipboard.h', |
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'src/CombinedImagePackModel.h', |
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'src/CompletionProxyModel.h', |
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'src/ImagePackListModel.h', |
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'src/InviteesModel.h', |
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'src/JdenticonProvider.h', |
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'src/LoginPage.h', |
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'src/MainWindow.h', |
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'src/MemberList.h', |
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'src/MxcImageProvider.h', |
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'src/RegisterPage.h', |
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'src/SSOHandler.h', |
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'src/SingleImagePackModel.h', |
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'src/TrayIcon.h', |
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'src/UserSettingsPage.h', |
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'src/UsersModel.h', |
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'src/RoomDirectoryModel.h', |
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'src/RoomsModel.h', |
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'src/WelcomePage.h', |
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'src/ReadReceiptsModel.h', |
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], |
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include_directories: inc, |
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dependencies: deps) |
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sources = [ |
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# Dialogs |
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'src/dialogs/CreateRoom.cpp', |
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'src/dialogs/FallbackAuth.cpp', |
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'src/dialogs/ImageOverlay.cpp', |
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'src/dialogs/Logout.cpp', |
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'src/dialogs/PreviewUploadOverlay.cpp', |
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'src/dialogs/ReCaptcha.cpp', |
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# Emoji |
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'src/emoji/EmojiModel.cpp', |
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'src/emoji/Provider.cpp', |
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# Timeline |
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'src/timeline/CommunitiesModel.cpp', |
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'src/timeline/EventStore.cpp', |
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'src/timeline/InputBar.cpp', |
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'src/timeline/Reaction.cpp', |
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'src/timeline/TimelineViewManager.cpp', |
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'src/timeline/TimelineModel.cpp', |
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'src/timeline/DelegateChooser.cpp', |
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'src/timeline/Permissions.cpp', |
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'src/timeline/RoomlistModel.cpp', |
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|
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# UI components |
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'src/ui/Badge.cpp', |
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'src/ui/DropShadow.cpp', |
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'src/ui/FlatButton.cpp', |
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'src/ui/FloatingButton.cpp', |
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'src/ui/InfoMessage.cpp', |
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'src/ui/Label.cpp', |
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'src/ui/LoadingIndicator.cpp', |
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'src/ui/MxcAnimatedImage.cpp', |
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'src/ui/MxcMediaProxy.cpp', |
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'src/ui/NhekoCursorShape.cpp', |
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'src/ui/NhekoDropArea.cpp', |
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'src/ui/NhekoGlobalObject.cpp', |
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'src/ui/OverlayModal.cpp', |
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'src/ui/OverlayWidget.cpp', |
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'src/ui/RaisedButton.cpp', |
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'src/ui/Ripple.cpp', |
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'src/ui/RippleOverlay.cpp', |
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'src/ui/RoomSettings.cpp', |
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'src/ui/SnackBar.cpp', |
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'src/ui/TextField.cpp', |
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'src/ui/TextLabel.cpp', |
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'src/ui/Theme.cpp', |
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'src/ui/ThemeManager.cpp', |
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'src/ui/ToggleButton.cpp', |
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'src/ui/UIA.cpp', |
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'src/ui/UserProfile.cpp', |
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'src/voip/CallDevices.cpp', |
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'src/voip/CallManager.cpp', |
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'src/voip/WebRTCSession.cpp', |
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|
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'src/encryption/DeviceVerificationFlow.cpp', |
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'src/encryption/Olm.cpp', |
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'src/encryption/SelfVerificationStatus.cpp', |
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'src/encryption/VerificationManager.cpp', |
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# Generic notification stuff |
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'src/notifications/Manager.cpp', |
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'src/AvatarProvider.cpp', |
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'src/BlurhashProvider.cpp', |
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'src/Cache.cpp', |
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'src/ChatPage.cpp', |
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'src/Clipboard.cpp', |
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'src/ColorImageProvider.cpp', |
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'src/CompletionProxyModel.cpp', |
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'src/EventAccessors.cpp', |
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'src/InviteesModel.cpp', |
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'src/JdenticonProvider.cpp', |
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'src/Logging.cpp', |
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'src/LoginPage.cpp', |
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'src/MainWindow.cpp', |
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'src/MatrixClient.cpp', |
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'src/MemberList.cpp', |
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'src/MxcImageProvider.cpp', |
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'src/ReadReceiptsModel.cpp', |
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'src/RegisterPage.cpp', |
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'src/SSOHandler.cpp', |
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'src/CombinedImagePackModel.cpp', |
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'src/SingleImagePackModel.cpp', |
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'src/ImagePackListModel.cpp', |
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'src/TrayIcon.cpp', |
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'src/UserSettingsPage.cpp', |
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'src/UsersModel.cpp', |
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'src/RoomDirectoryModel.cpp', |
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'src/RoomsModel.cpp', |
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'src/Utils.cpp', |
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'src/WelcomePage.cpp', |
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'src/main.cpp', |
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|
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'third_party/blurhash/blurhash.cpp', |
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] |
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if host_machine.system() == 'darwin' |
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sources += ['src/notifications/ManagerMac.mm', 'src/notifications/ManagerMac.cpp', 'src/emoji/MacHelper.mm'] |
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elif host_machine.system() == 'windows' |
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sources += ['src/notifications/ManagerWin.cpp', 'src/wintoastlib.cpp'] |
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else |
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sources += ['src/notifications/ManagerLinux.cpp'] |
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endif |
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resources = qt5.compile_resources(name: 'res', sources: 'resources/res.qrc') |
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executable('nheko', |
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sources, moc_files, resources, |
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cpp_args: '-DQAPPLICATION_CLASS=QApplication', |
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include_directories: inc, |
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dependencies : deps, |
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install: true) |
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@ -0,0 +1,9 @@ |
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#include "nheko_version.h" |
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namespace nheko { |
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constexpr auto build_os = "@HOST_SYSTEM_NAME@"; |
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// clang-format off
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constexpr auto enable_debug_log = @SPDLOG_DEBUG_ON@; |
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} |
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#mesondefine HAVE_BACKTRACE_SYMBOLS_FD |
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@ -0,0 +1,4 @@ |
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namespace nheko { |
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constexpr auto version = "@PROJECT_VERSION@"; |
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} |
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@ -0,0 +1 @@ |
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github: itay-grudev |
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@ -0,0 +1,56 @@ |
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name: "CI: Build Test" |
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on: [push, pull_request] |
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jobs: |
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build: |
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|
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strategy: |
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matrix: |
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qt_version: [5.12.6, 5.13.2, 5.14.0, 5.15.0, 6.0.0] |
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platform: [ubuntu-20.04, windows-latest, macos-latest] |
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include: |
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- qt_version: 6.0.0 |
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additional_arguments: -D QT_DEFAULT_MAJOR_VERSION=6 |
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- platform: ubuntu-20.04 |
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CXXFLAGS: -Wall -Wextra -pedantic -Werror |
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- platform: macos-latest |
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CXXFLAGS: -Wall -Wextra -pedantic -Werror |
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- platform: windows-latest |
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CXXFLAGS: /W4 /WX |
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runs-on: ${{ matrix.platform }} |
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env: |
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CXXFLAGS: ${{ matrix.CXXFLAGS }} |
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steps: |
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- uses: actions/checkout@v2.3.4 |
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- name: Install Qt |
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uses: jurplel/install-qt-action@v2.11.1 |
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with: |
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version: ${{ matrix.qt_version }} |
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- name: cmake |
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run: cmake . ${{ matrix.additional_arguments }} |
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- name: cmake build |
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run: cmake --build . |
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- name: Build example - basic (cmake) |
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working-directory: examples/basic/ |
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run: | |
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cmake . ${{ matrix.additional_arguments }} |
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cmake --build . |
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- name: Build example - calculator (cmake) |
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working-directory: examples/calculator/ |
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run: | |
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cmake . ${{ matrix.additional_arguments }} |
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cmake --build . |
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- name: Build example - sending_arguments (cmake) |
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working-directory: examples/sending_arguments/ |
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run: | |
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cmake . ${{ matrix.additional_arguments }} |
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cmake --build . |
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@ -0,0 +1,16 @@ |
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/examples/*/*.o |
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/examples/*/Makefile |
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/examples/*/moc_*.cpp |
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/examples/*/moc_predefs.h |
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/examples/*/*.qmake.stash |
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/examples/basic/basic |
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/examples/calculator/calculator |
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/examples/sending_arguments/sending_arguments |
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/**/CMakeLists.txt.user |
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/**/CMakeCache.txt |
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/**/CMakeCache/* |
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/**/CMakeFiles/* |
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/**/Makefile |
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/**/cmake_install.cmake |
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/**/*_autogen/ |
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libSingleApplication.a |
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@ -0,0 +1,301 @@ |
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Changelog |
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========= |
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If by accident I have forgotten to credit someone in the CHANGELOG, email me and I will fix it. |
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__3.3.0__ |
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--------- |
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* Fixed message fragmentation issue causing crashes and incorrectly and inconsistently received messages. - _Nils Jeisecke_ |
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__3.2.0__ |
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--------- |
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* Added support for Qt 6 - _Jonas Kvinge_ |
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* Fixed warning in `Qt 5.9` with `min`/`max` functions on Windows - _Nick Korotysh_ |
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* Fix return value of connectToPrimary() when connect is successful - _Jonas Kvinge_ |
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* Fix build issue with MinGW GCC pedantic mode - _Iakov Kirilenko_ |
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* Fixed conversion from `int` to `quint32` and Clang Tidy warnings - _Hennadii Chernyshchyk_ |
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__3.1.5__ |
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--------- |
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* Improved library stability in edge cases and very rapid process initialisation |
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* Fixed Bug where the shared memory block may have been modified without a lock |
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* Fixed Bug causing `instanceStarted()` to not get emitted when a second instance |
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has been started before the primary has initiated it's `QLocalServer`. |
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__3.1.4__ |
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--------- |
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* Officially supporting and build-testing against Qt 5.15 |
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* Fixed an MSVC C4996 warning that suggests using `strncpy_s`. |
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|
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_Hennadii Chernyshchyk_ |
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__3.1.3.1__ |
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--------- |
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* CMake build system improvements |
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* Fixed Clang Tidy warnings |
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|
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_Hennadii Chernyshchyk_ |
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__3.1.3__ |
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--------- |
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* Improved `CMakeLists.txt` |
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|
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_Hennadii Chernyshchyk_ |
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__3.1.2__ |
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--------- |
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* Fix a crash when exiting an application on Android and iOS |
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|
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_Emeric Grange_ |
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__3.1.1a__ |
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---------- |
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|
||||||
|
* Added currentUser() method that returns the user the current instance is running as. |
||||||
|
|
||||||
|
_Leander Schulten_ |
||||||
|
|
||||||
|
__3.1.0a__ |
||||||
|
---------- |
||||||
|
|
||||||
|
* Added primaryUser() method that returns the user the primary instance is running as. |
||||||
|
|
||||||
|
__3.0.19__ |
||||||
|
---------- |
||||||
|
|
||||||
|
* Fixed code warning for depricated functions in Qt 5.10 related to `QTime` and `qrand()`. |
||||||
|
|
||||||
|
_Hennadii Chernyshchyk_ |
||||||
|
_Anton Filimonov_ |
||||||
|
_Jonas Kvinge_ |
||||||
|
|
||||||
|
__3.0.18__ |
||||||
|
---------- |
||||||
|
|
||||||
|
* Fallback to standard QApplication class on iOS and Android systems where |
||||||
|
the library is not supported. |
||||||
|
|
||||||
|
* Added Build CI tests to verify the library builds successfully on Linux, Windows and MacOS across multiple Qt versions. |
||||||
|
|
||||||
|
_Anton Filimonov_ |
||||||
|
|
||||||
|
__3.0.17__ |
||||||
|
---------- |
||||||
|
|
||||||
|
* Fixed compilation warning/error caused by `geteuid()` on unix based systems. |
||||||
|
|
||||||
|
_Iakov Kirilenko_ |
||||||
|
|
||||||
|
* Added CMake support |
||||||
|
|
||||||
|
_Hennadii Chernyshchyk_ |
||||||
|
|
||||||
|
__3.0.16__ |
||||||
|
---------- |
||||||
|
|
||||||
|
* Use geteuid and getpwuid to get username on Unix, fallback to environment variable. |
||||||
|
|
||||||
|
_Jonas Kvinge_ |
||||||
|
|
||||||
|
__3.0.15__ |
||||||
|
---------- |
||||||
|
|
||||||
|
* Bug Fix: sendMessage() might return false even though data was actually written. |
||||||
|
|
||||||
|
_Jonas Kvinge_ |
||||||
|
|
||||||
|
__3.0.14__ |
||||||
|
---------- |
||||||
|
|
||||||
|
* Fixed uninitialised variables in the `SingleApplicationPrivate` constructor. |
||||||
|
|
||||||
|
__3.0.13a__ |
||||||
|
---------- |
||||||
|
|
||||||
|
* Process socket events asynchronously |
||||||
|
* Fix undefined variable error on Windows |
||||||
|
|
||||||
|
_Francis Giraldeau_ |
||||||
|
|
||||||
|
__3.0.12a__ |
||||||
|
---------- |
||||||
|
|
||||||
|
* Removed signal handling. |
||||||
|
|
||||||
|
__3.0.11a__ |
||||||
|
---------- |
||||||
|
|
||||||
|
* Fixed bug where the message sent by the second process was not received |
||||||
|
correctly when the message is sent immediately following a connection. |
||||||
|
|
||||||
|
_Francis Giraldeau_ |
||||||
|
|
||||||
|
* Refactored code and implemented shared memory block consistency checks |
||||||
|
via `qChecksum()` (CRC-16). |
||||||
|
* Explicit `qWarning` and `qCritical` when the library is unable to initialise |
||||||
|
correctly. |
||||||
|
|
||||||
|
__3.0.10__ |
||||||
|
---------- |
||||||
|
|
||||||
|
* Removed C style casts and eliminated all clang warnings. Fixed `instanceId` |
||||||
|
reading from only one byte in the message deserialization. Cleaned up |
||||||
|
serialization code using `QDataStream`. Changed connection type to use |
||||||
|
`quint8 enum` rather than `char`. |
||||||
|
* Renamed `SingleAppConnectionType` to `ConnectionType`. Added initialization |
||||||
|
values to all `ConnectionType` enum cases. |
||||||
|
|
||||||
|
_Jedidiah Buck McCready_ |
||||||
|
|
||||||
|
__3.0.9__ |
||||||
|
--------- |
||||||
|
|
||||||
|
* Added SingleApplicationPrivate::primaryPid() as a solution to allow |
||||||
|
bringing the primary window of an application to the foreground on |
||||||
|
Windows. |
||||||
|
|
||||||
|
_Eelco van Dam from Peacs BV_ |
||||||
|
|
||||||
|
__3.0.8__ |
||||||
|
--------- |
||||||
|
|
||||||
|
* Bug fix - changed QApplication::instance() to QCoreApplication::instance() |
||||||
|
|
||||||
|
_Evgeniy Bazhenov_ |
||||||
|
|
||||||
|
__3.0.7a__ |
||||||
|
---------- |
||||||
|
|
||||||
|
* Fixed compilation error with Mingw32 in MXE thanks to Vitaly Tonkacheyev. |
||||||
|
* Removed QMutex used for thread safe behaviour. The implementation now uses |
||||||
|
QCoreApplication::instance() to get an instance to SingleApplication for |
||||||
|
memory deallocation. |
||||||
|
|
||||||
|
__3.0.6a__ |
||||||
|
---------- |
||||||
|
|
||||||
|
* Reverted GetUserName API usage on Windows. Fixed bug with missing library. |
||||||
|
* Fixed bug in the Calculator example, preventing it's window to be raised |
||||||
|
on Windows. |
||||||
|
|
||||||
|
Special thanks to Charles Gunawan. |
||||||
|
|
||||||
|
__3.0.5a__ |
||||||
|
---------- |
||||||
|
|
||||||
|
* Fixed a memory leak in the SingleApplicationPrivate destructor. |
||||||
|
|
||||||
|
_Sergei Moiseev_ |
||||||
|
|
||||||
|
__3.0.4a__ |
||||||
|
---------- |
||||||
|
|
||||||
|
* Fixed shadow and uninitialised variable warnings. |
||||||
|
|
||||||
|
_Paul Walmsley_ |
||||||
|
|
||||||
|
__3.0.3a__ |
||||||
|
---------- |
||||||
|
|
||||||
|
* Removed Microsoft Windows specific code for getting username due to |
||||||
|
multiple problems and compiler differences on Windows platforms. On |
||||||
|
Windows the shared memory block in User mode now includes the user's |
||||||
|
home path (which contains the user's username). |
||||||
|
|
||||||
|
* Explicitly getting absolute path of the user's home directory as on Unix |
||||||
|
a relative path (`~`) may be returned. |
||||||
|
|
||||||
|
__3.0.2a__ |
||||||
|
---------- |
||||||
|
|
||||||
|
* Fixed bug on Windows when username containing wide characters causes the |
||||||
|
library to crash. |
||||||
|
|
||||||
|
_Le Liu_ |
||||||
|
|
||||||
|
__3.0.1a__ |
||||||
|
---------- |
||||||
|
|
||||||
|
* Allows the application path and version to be excluded from the server name |
||||||
|
hash. The following flags were added for this purpose: |
||||||
|
* `SingleApplication::Mode::ExcludeAppVersion` |
||||||
|
* `SingleApplication::Mode::ExcludeAppPath` |
||||||
|
* Allow a non elevated process to connect to a local server created by an |
||||||
|
elevated process run by the same user on Windows |
||||||
|
* Fixes a problem with upper case letters in paths on Windows |
||||||
|
|
||||||
|
_Le Liu_ |
||||||
|
|
||||||
|
__v3.0a__ |
||||||
|
--------- |
||||||
|
|
||||||
|
* Deprecated secondary instances count. |
||||||
|
* Added a sendMessage() method to send a message to the primary instance. |
||||||
|
* Added a receivedMessage() signal, emitted when a message is received from a |
||||||
|
secondary instance. |
||||||
|
* The SingleApplication constructor's third parameter is now a bool |
||||||
|
specifying if the current instance should be allowed to run as a secondary |
||||||
|
instance if there is already a primary instance. |
||||||
|
* The SingleApplication constructor accept a fourth parameter specifying if |
||||||
|
the SingleApplication block should be User-wide or System-wide. |
||||||
|
* SingleApplication no longer relies on `applicationName` and |
||||||
|
`organizationName` to be set. It instead concatenates all of the following |
||||||
|
data and computes a `SHA256` hash which is used as the key of the |
||||||
|
`QSharedMemory` block and the `QLocalServer`. Since at least |
||||||
|
`applicationFilePath` is always present there is no need to explicitly set |
||||||
|
any of the following prior to initialising `SingleApplication`. |
||||||
|
* `QCoreApplication::applicationName` |
||||||
|
* `QCoreApplication::applicationVersion` |
||||||
|
* `QCoreApplication::applicationFilePath` |
||||||
|
* `QCoreApplication::organizationName` |
||||||
|
* `QCoreApplication::organizationDomain` |
||||||
|
* User name or home directory path if in User mode |
||||||
|
* The primary instance is no longer notified when a secondary instance had |
||||||
|
been started by default. A `Mode` flag for this feature exists. |
||||||
|
* Added `instanceNumber()` which represents a unique identifier for each |
||||||
|
secondary instance started. When called from the primary instance will |
||||||
|
return `0`. |
||||||
|
|
||||||
|
__v2.4__ |
||||||
|
-------- |
||||||
|
|
||||||
|
* Stability improvements |
||||||
|
* Support for secondary instances. |
||||||
|
* The library now recovers safely after the primary process has crashed |
||||||
|
and the shared memory had not been deleted. |
||||||
|
|
||||||
|
__v2.3__ |
||||||
|
-------- |
||||||
|
|
||||||
|
* Improved pimpl design and inheritance safety. |
||||||
|
|
||||||
|
_Vladislav Pyatnichenko_ |
||||||
|
|
||||||
|
__v2.2__ |
||||||
|
-------- |
||||||
|
|
||||||
|
* The `QAPPLICATION_CLASS` macro can now be defined in the file including the |
||||||
|
Single Application header or with a `DEFINES+=` statement in the project file. |
||||||
|
|
||||||
|
__v2.1__ |
||||||
|
-------- |
||||||
|
|
||||||
|
* A race condition can no longer occur when starting two processes nearly |
||||||
|
simultaneously. |
||||||
|
|
||||||
|
Fix issue [#3](https://github.com/itay-grudev/SingleApplication/issues/3) |
||||||
|
|
||||||
|
__v2.0__ |
||||||
|
-------- |
||||||
|
|
||||||
|
* SingleApplication is now being passed a reference to `argc` instead of a |
||||||
|
copy. |
||||||
|
|
||||||
|
Fix issue [#1](https://github.com/itay-grudev/SingleApplication/issues/1) |
||||||
|
|
||||||
|
* Improved documentation. |
||||||
@ -0,0 +1,40 @@ |
|||||||
|
cmake_minimum_required(VERSION 3.7.0) |
||||||
|
|
||||||
|
project(SingleApplication LANGUAGES CXX) |
||||||
|
|
||||||
|
set(CMAKE_AUTOMOC ON) |
||||||
|
|
||||||
|
add_library(${PROJECT_NAME} STATIC |
||||||
|
singleapplication.cpp |
||||||
|
singleapplication_p.cpp |
||||||
|
) |
||||||
|
add_library(${PROJECT_NAME}::${PROJECT_NAME} ALIAS ${PROJECT_NAME}) |
||||||
|
|
||||||
|
if(NOT QT_DEFAULT_MAJOR_VERSION) |
||||||
|
set(QT_DEFAULT_MAJOR_VERSION 5 CACHE STRING "Qt version to use (5 or 6), defaults to 5") |
||||||
|
endif() |
||||||
|
|
||||||
|
# Find dependencies |
||||||
|
set(QT_COMPONENTS Core Network) |
||||||
|
set(QT_LIBRARIES Qt${QT_DEFAULT_MAJOR_VERSION}::Core Qt${QT_DEFAULT_MAJOR_VERSION}::Network) |
||||||
|
|
||||||
|
if(QAPPLICATION_CLASS STREQUAL QApplication) |
||||||
|
list(APPEND QT_COMPONENTS Widgets) |
||||||
|
list(APPEND QT_LIBRARIES Qt${QT_DEFAULT_MAJOR_VERSION}::Widgets) |
||||||
|
elseif(QAPPLICATION_CLASS STREQUAL QGuiApplication) |
||||||
|
list(APPEND QT_COMPONENTS Gui) |
||||||
|
list(APPEND QT_LIBRARIES Qt${QT_DEFAULT_MAJOR_VERSION}::Gui) |
||||||
|
else() |
||||||
|
set(QAPPLICATION_CLASS QCoreApplication) |
||||||
|
endif() |
||||||
|
|
||||||
|
find_package(Qt${QT_DEFAULT_MAJOR_VERSION} COMPONENTS ${QT_COMPONENTS} REQUIRED) |
||||||
|
|
||||||
|
target_link_libraries(${PROJECT_NAME} PUBLIC ${QT_LIBRARIES}) |
||||||
|
|
||||||
|
if(WIN32) |
||||||
|
target_link_libraries(${PROJECT_NAME} PRIVATE advapi32) |
||||||
|
endif() |
||||||
|
|
||||||
|
target_compile_definitions(${PROJECT_NAME} PUBLIC QAPPLICATION_CLASS=${QAPPLICATION_CLASS}) |
||||||
|
target_include_directories(${PROJECT_NAME} PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}) |
||||||
@ -0,0 +1,24 @@ |
|||||||
|
The MIT License (MIT) |
||||||
|
|
||||||
|
Copyright (c) Itay Grudev 2015 - 2020 |
||||||
|
|
||||||
|
Permission is hereby granted, free of charge, to any person obtaining a copy |
||||||
|
of this software and associated documentation files (the "Software"), to deal |
||||||
|
in the Software without restriction, including without limitation the rights |
||||||
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
||||||
|
copies of the Software, and to permit persons to whom the Software is |
||||||
|
furnished to do so, subject to the following conditions: |
||||||
|
|
||||||
|
The above copyright notice and this permission notice shall be included in |
||||||
|
all copies or substantial portions of the Software. |
||||||
|
|
||||||
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
||||||
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
||||||
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
||||||
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
||||||
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
||||||
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
||||||
|
THE SOFTWARE. |
||||||
|
|
||||||
|
Note: Some of the examples include code not distributed under the terms of the |
||||||
|
MIT License. |
||||||
@ -0,0 +1,304 @@ |
|||||||
|
SingleApplication |
||||||
|
================= |
||||||
|
[](https://github.com/itay-grudev/SingleApplication/actions) |
||||||
|
|
||||||
|
This is a replacement of the QtSingleApplication for `Qt5` and `Qt6`. |
||||||
|
|
||||||
|
Keeps the Primary Instance of your Application and kills each subsequent |
||||||
|
instances. It can (if enabled) spawn secondary (non-related to the primary) |
||||||
|
instances and can send data to the primary instance from secondary instances. |
||||||
|
|
||||||
|
Usage |
||||||
|
----- |
||||||
|
|
||||||
|
The `SingleApplication` class inherits from whatever `Q[Core|Gui]Application` |
||||||
|
class you specify via the `QAPPLICATION_CLASS` macro (`QCoreApplication` is the |
||||||
|
default). Further usage is similar to the use of the `Q[Core|Gui]Application` |
||||||
|
classes. |
||||||
|
|
||||||
|
You can use the library as if you use any other `QCoreApplication` derived |
||||||
|
class: |
||||||
|
|
||||||
|
```cpp |
||||||
|
#include <QApplication> |
||||||
|
#include <SingleApplication.h> |
||||||
|
|
||||||
|
int main( int argc, char* argv[] ) |
||||||
|
{ |
||||||
|
SingleApplication app( argc, argv ); |
||||||
|
|
||||||
|
return app.exec(); |
||||||
|
} |
||||||
|
``` |
||||||
|
|
||||||
|
To include the library files I would recommend that you add it as a git |
||||||
|
submodule to your project. Here is how: |
||||||
|
|
||||||
|
```bash |
||||||
|
git submodule add git@github.com:itay-grudev/SingleApplication.git singleapplication |
||||||
|
``` |
||||||
|
|
||||||
|
**Qmake:** |
||||||
|
|
||||||
|
Then include the `singleapplication.pri` file in your `.pro` project file. |
||||||
|
|
||||||
|
```qmake |
||||||
|
include(singleapplication/singleapplication.pri) |
||||||
|
DEFINES += QAPPLICATION_CLASS=QApplication |
||||||
|
``` |
||||||
|
|
||||||
|
**CMake:** |
||||||
|
|
||||||
|
Then include the subdirectory in your `CMakeLists.txt` project file. |
||||||
|
|
||||||
|
```cmake |
||||||
|
set(QAPPLICATION_CLASS QApplication CACHE STRING "Inheritance class for SingleApplication") |
||||||
|
add_subdirectory(src/third-party/singleapplication) |
||||||
|
target_link_libraries(${PROJECT_NAME} SingleApplication::SingleApplication) |
||||||
|
``` |
||||||
|
|
||||||
|
|
||||||
|
The library sets up a `QLocalServer` and a `QSharedMemory` block. The first |
||||||
|
instance of your Application is your Primary Instance. It would check if the |
||||||
|
shared memory block exists and if not it will start a `QLocalServer` and listen |
||||||
|
for connections. Each subsequent instance of your application would check if the |
||||||
|
shared memory block exists and if it does, it will connect to the QLocalServer |
||||||
|
to notify the primary instance that a new instance had been started, after which |
||||||
|
it would terminate with status code `0`. In the Primary Instance |
||||||
|
`SingleApplication` would emit the `instanceStarted()` signal upon detecting |
||||||
|
that a new instance had been started. |
||||||
|
|
||||||
|
The library uses `stdlib` to terminate the program with the `exit()` function. |
||||||
|
|
||||||
|
Also don't forget to specify which `QCoreApplication` class your app is using if it |
||||||
|
is not `QCoreApplication` as in examples above. |
||||||
|
|
||||||
|
The `Instance Started` signal |
||||||
|
----------------------------- |
||||||
|
|
||||||
|
The SingleApplication class implements a `instanceStarted()` signal. You can |
||||||
|
bind to that signal to raise your application's window when a new instance had |
||||||
|
been started, for example. |
||||||
|
|
||||||
|
```cpp |
||||||
|
// window is a QWindow instance |
||||||
|
QObject::connect( |
||||||
|
&app, |
||||||
|
&SingleApplication::instanceStarted, |
||||||
|
&window, |
||||||
|
&QWindow::raise |
||||||
|
); |
||||||
|
``` |
||||||
|
|
||||||
|
Using `SingleApplication::instance()` is a neat way to get the |
||||||
|
`SingleApplication` instance for binding to it's signals anywhere in your |
||||||
|
program. |
||||||
|
|
||||||
|
__Note:__ On Windows the ability to bring the application windows to the |
||||||
|
foreground is restricted. See [Windows specific implementations](Windows.md) |
||||||
|
for a workaround and an example implementation. |
||||||
|
|
||||||
|
|
||||||
|
Secondary Instances |
||||||
|
------------------- |
||||||
|
|
||||||
|
If you want to be able to launch additional Secondary Instances (not related to |
||||||
|
your Primary Instance) you have to enable that with the third parameter of the |
||||||
|
`SingleApplication` constructor. The default is `false` meaning no Secondary |
||||||
|
Instances. Here is an example of how you would start a Secondary Instance send |
||||||
|
a message with the command line arguments to the primary instance and then shut |
||||||
|
down. |
||||||
|
|
||||||
|
```cpp |
||||||
|
int main(int argc, char *argv[]) |
||||||
|
{ |
||||||
|
SingleApplication app( argc, argv, true ); |
||||||
|
|
||||||
|
if( app.isSecondary() ) { |
||||||
|
app.sendMessage( app.arguments().join(' ')).toUtf8() ); |
||||||
|
app.exit( 0 ); |
||||||
|
} |
||||||
|
|
||||||
|
return app.exec(); |
||||||
|
} |
||||||
|
``` |
||||||
|
|
||||||
|
*__Note:__ A secondary instance won't cause the emission of the |
||||||
|
`instanceStarted()` signal by default. See `SingleApplication::Mode` for more |
||||||
|
details.* |
||||||
|
|
||||||
|
You can check whether your instance is a primary or secondary with the following |
||||||
|
methods: |
||||||
|
|
||||||
|
```cpp |
||||||
|
app.isPrimary(); |
||||||
|
// or |
||||||
|
app.isSecondary(); |
||||||
|
``` |
||||||
|
|
||||||
|
*__Note:__ If your Primary Instance is terminated a newly launched instance |
||||||
|
will replace the Primary one even if the Secondary flag has been set.* |
||||||
|
|
||||||
|
Examples |
||||||
|
-------- |
||||||
|
|
||||||
|
There are three examples provided in this repository: |
||||||
|
|
||||||
|
* Basic example that prevents a secondary instance from starting [`examples/basic`](https://github.com/itay-grudev/SingleApplication/tree/master/examples/basic) |
||||||
|
* An example of a graphical application raising it's parent window [`examples/calculator`](https://github.com/itay-grudev/SingleApplication/tree/master/examples/calculator) |
||||||
|
* A console application sending the primary instance it's command line parameters [`examples/sending_arguments`](https://github.com/itay-grudev/SingleApplication/tree/master/examples/sending_arguments) |
||||||
|
|
||||||
|
API |
||||||
|
--- |
||||||
|
|
||||||
|
### Members |
||||||
|
|
||||||
|
```cpp |
||||||
|
SingleApplication::SingleApplication( int &argc, char *argv[], bool allowSecondary = false, Options options = Mode::User, int timeout = 100, QString userData = QString() ) |
||||||
|
``` |
||||||
|
|
||||||
|
Depending on whether `allowSecondary` is set, this constructor may terminate |
||||||
|
your app if there is already a primary instance running. Additional `Options` |
||||||
|
can be specified to set whether the SingleApplication block should work |
||||||
|
user-wide or system-wide. Additionally the `Mode::SecondaryNotification` may be |
||||||
|
used to notify the primary instance whenever a secondary instance had been |
||||||
|
started (disabled by default). `timeout` specifies the maximum time in |
||||||
|
milliseconds to wait for blocking operations. Setting `userData` provides additional data that will isolate this instance from other instances that do not have the same (or any) user data set. |
||||||
|
|
||||||
|
*__Note:__ `argc` and `argv` may be changed as Qt removes arguments that it |
||||||
|
recognizes.* |
||||||
|
|
||||||
|
*__Note:__ `Mode::SecondaryNotification` only works if set on both the primary |
||||||
|
and the secondary instance.* |
||||||
|
|
||||||
|
*__Note:__ Operating system can restrict the shared memory blocks to the same |
||||||
|
user, in which case the User/System modes will have no effect and the block will |
||||||
|
be user wide.* |
||||||
|
|
||||||
|
--- |
||||||
|
|
||||||
|
```cpp |
||||||
|
bool SingleApplication::sendMessage( QByteArray message, int timeout = 100 ) |
||||||
|
``` |
||||||
|
|
||||||
|
Sends `message` to the Primary Instance. Uses `timeout` as a the maximum timeout |
||||||
|
in milliseconds for blocking functions |
||||||
|
|
||||||
|
--- |
||||||
|
|
||||||
|
```cpp |
||||||
|
bool SingleApplication::isPrimary() |
||||||
|
``` |
||||||
|
|
||||||
|
Returns if the instance is the primary instance. |
||||||
|
|
||||||
|
--- |
||||||
|
|
||||||
|
```cpp |
||||||
|
bool SingleApplication::isSecondary() |
||||||
|
``` |
||||||
|
Returns if the instance is a secondary instance. |
||||||
|
|
||||||
|
--- |
||||||
|
|
||||||
|
```cpp |
||||||
|
quint32 SingleApplication::instanceId() |
||||||
|
``` |
||||||
|
|
||||||
|
Returns a unique identifier for the current instance. |
||||||
|
|
||||||
|
--- |
||||||
|
|
||||||
|
```cpp |
||||||
|
qint64 SingleApplication::primaryPid() |
||||||
|
``` |
||||||
|
|
||||||
|
Returns the process ID (PID) of the primary instance. |
||||||
|
|
||||||
|
--- |
||||||
|
|
||||||
|
```cpp |
||||||
|
QString SingleApplication::primaryUser() |
||||||
|
``` |
||||||
|
|
||||||
|
Returns the username the primary instance is running as. |
||||||
|
|
||||||
|
--- |
||||||
|
|
||||||
|
```cpp |
||||||
|
QString SingleApplication::currentUser() |
||||||
|
``` |
||||||
|
|
||||||
|
Returns the username the current instance is running as. |
||||||
|
|
||||||
|
### Signals |
||||||
|
|
||||||
|
```cpp |
||||||
|
void SingleApplication::instanceStarted() |
||||||
|
``` |
||||||
|
|
||||||
|
Triggered whenever a new instance had been started, except for secondary |
||||||
|
instances if the `Mode::SecondaryNotification` flag is not specified. |
||||||
|
|
||||||
|
--- |
||||||
|
|
||||||
|
```cpp |
||||||
|
void SingleApplication::receivedMessage( quint32 instanceId, QByteArray message ) |
||||||
|
``` |
||||||
|
|
||||||
|
Triggered whenever there is a message received from a secondary instance. |
||||||
|
|
||||||
|
--- |
||||||
|
|
||||||
|
### Flags |
||||||
|
|
||||||
|
```cpp |
||||||
|
enum SingleApplication::Mode |
||||||
|
``` |
||||||
|
|
||||||
|
* `Mode::User` - The SingleApplication block should apply user wide. This adds |
||||||
|
user specific data to the key used for the shared memory and server name. |
||||||
|
This is the default functionality. |
||||||
|
* `Mode::System` – The SingleApplication block applies system-wide. |
||||||
|
* `Mode::SecondaryNotification` – Whether to trigger `instanceStarted()` even |
||||||
|
whenever secondary instances are started. |
||||||
|
* `Mode::ExcludeAppPath` – Excludes the application path from the server name |
||||||
|
(and memory block) hash. |
||||||
|
* `Mode::ExcludeAppVersion` – Excludes the application version from the server |
||||||
|
name (and memory block) hash. |
||||||
|
|
||||||
|
*__Note:__ `Mode::SecondaryNotification` only works if set on both the primary |
||||||
|
and the secondary instance.* |
||||||
|
|
||||||
|
*__Note:__ Operating system can restrict the shared memory blocks to the same |
||||||
|
user, in which case the User/System modes will have no effect and the block will |
||||||
|
be user wide.* |
||||||
|
|
||||||
|
--- |
||||||
|
|
||||||
|
Versioning |
||||||
|
---------- |
||||||
|
|
||||||
|
Each major version introduces either very significant changes or is not |
||||||
|
backwards compatible with the previous version. Minor versions only add |
||||||
|
additional features, bug fixes or performance improvements and are backwards |
||||||
|
compatible with the previous release. See [`CHANGELOG.md`](CHANGELOG.md) for |
||||||
|
more details. |
||||||
|
|
||||||
|
Implementation |
||||||
|
-------------- |
||||||
|
|
||||||
|
The library is implemented with a QSharedMemory block which is thread safe and |
||||||
|
guarantees a race condition will not occur. It also uses a QLocalSocket to |
||||||
|
notify the main process that a new instance had been spawned and thus invoke the |
||||||
|
`instanceStarted()` signal and for messaging the primary instance. |
||||||
|
|
||||||
|
Additionally the library can recover from being forcefully killed on *nix |
||||||
|
systems and will reset the memory block given that there are no other |
||||||
|
instances running. |
||||||
|
|
||||||
|
License |
||||||
|
------- |
||||||
|
This library and it's supporting documentation are released under |
||||||
|
`The MIT License (MIT)` with the exception of the Qt calculator examples which |
||||||
|
is distributed under the BSD license. |
||||||
@ -0,0 +1 @@ |
|||||||
|
#include "singleapplication.h" |
||||||
@ -0,0 +1,46 @@ |
|||||||
|
Windows Specific Implementations |
||||||
|
================================ |
||||||
|
|
||||||
|
Setting the foreground window |
||||||
|
----------------------------- |
||||||
|
|
||||||
|
In the `instanceStarted()` example in the `README` we demonstrated how an |
||||||
|
application can bring it's primary instance window whenever a second copy |
||||||
|
of the application is started. |
||||||
|
|
||||||
|
On Windows the ability to bring the application windows to the foreground is |
||||||
|
restricted, see [`AllowSetForegroundWindow()`][AllowSetForegroundWindow] for more |
||||||
|
details. |
||||||
|
|
||||||
|
The background process (the primary instance) can bring its windows to the |
||||||
|
foreground if it is allowed by the current foreground process (the secondary |
||||||
|
instance). To bypass this `SingleApplication` must be initialized with the |
||||||
|
`allowSecondary` parameter set to `true` and the `options` parameter must |
||||||
|
include `Mode::SecondaryNotification`, See `SingleApplication::Mode` for more |
||||||
|
details. |
||||||
|
|
||||||
|
Here is an example: |
||||||
|
|
||||||
|
```cpp |
||||||
|
if( app.isSecondary() ) { |
||||||
|
// This API requires LIBS += User32.lib to be added to the project |
||||||
|
AllowSetForegroundWindow( DWORD( app.primaryPid() ) ); |
||||||
|
} |
||||||
|
|
||||||
|
if( app.isPrimary() ) { |
||||||
|
QObject::connect( |
||||||
|
&app, |
||||||
|
&SingleApplication::instanceStarted, |
||||||
|
this, |
||||||
|
&App::instanceStarted |
||||||
|
); |
||||||
|
} |
||||||
|
``` |
||||||
|
|
||||||
|
```cpp |
||||||
|
void App::instanceStarted() { |
||||||
|
QApplication::setActiveWindow( [window/widget to set to the foreground] ); |
||||||
|
} |
||||||
|
``` |
||||||
|
|
||||||
|
[AllowSetForegroundWindow]: https://msdn.microsoft.com/en-us/library/windows/desktop/ms632668.aspx |
||||||
@ -0,0 +1,12 @@ |
|||||||
|
cmake_minimum_required(VERSION 3.7.0) |
||||||
|
|
||||||
|
project(basic LANGUAGES CXX) |
||||||
|
|
||||||
|
# SingleApplication base class |
||||||
|
set(QAPPLICATION_CLASS QCoreApplication) |
||||||
|
add_subdirectory(../.. SingleApplication) |
||||||
|
|
||||||
|
add_executable(basic main.cpp) |
||||||
|
|
||||||
|
target_link_libraries(${PROJECT_NAME} SingleApplication::SingleApplication) |
||||||
|
|
||||||
@ -0,0 +1,5 @@ |
|||||||
|
# Single Application implementation |
||||||
|
include(../../singleapplication.pri) |
||||||
|
DEFINES += QAPPLICATION_CLASS=QCoreApplication |
||||||
|
|
||||||
|
SOURCES += main.cpp |
||||||
@ -0,0 +1,10 @@ |
|||||||
|
#include <singleapplication.h> |
||||||
|
|
||||||
|
int main(int argc, char *argv[]) |
||||||
|
{ |
||||||
|
SingleApplication app( argc, argv ); |
||||||
|
|
||||||
|
qWarning() << "Started a new instance"; |
||||||
|
|
||||||
|
return app.exec(); |
||||||
|
} |
||||||
@ -0,0 +1,21 @@ |
|||||||
|
cmake_minimum_required(VERSION 3.7.0) |
||||||
|
|
||||||
|
project(calculator LANGUAGES CXX) |
||||||
|
|
||||||
|
set(CMAKE_AUTOMOC ON) |
||||||
|
|
||||||
|
# SingleApplication base class |
||||||
|
set(QAPPLICATION_CLASS QApplication) |
||||||
|
add_subdirectory(../.. SingleApplication) |
||||||
|
|
||||||
|
find_package(Qt${QT_DEFAULT_MAJOR_VERSION} COMPONENTS Core REQUIRED) |
||||||
|
|
||||||
|
add_executable(${PROJECT_NAME} |
||||||
|
button.h |
||||||
|
calculator.h |
||||||
|
button.cpp |
||||||
|
calculator.cpp |
||||||
|
main.cpp |
||||||
|
) |
||||||
|
|
||||||
|
target_link_libraries(${PROJECT_NAME} SingleApplication::SingleApplication) |
||||||
@ -0,0 +1,73 @@ |
|||||||
|
/****************************************************************************
|
||||||
|
** |
||||||
|
** Copyright (C) 2016 The Qt Company Ltd. |
||||||
|
** Contact: https://www.qt.io/licensing/
|
||||||
|
** |
||||||
|
** This file is part of the examples of the Qt Toolkit. |
||||||
|
** |
||||||
|
** $QT_BEGIN_LICENSE:BSD$ |
||||||
|
** Commercial License Usage |
||||||
|
** Licensees holding valid commercial Qt licenses may use this file in |
||||||
|
** accordance with the commercial license agreement provided with the |
||||||
|
** Software or, alternatively, in accordance with the terms contained in |
||||||
|
** a written agreement between you and The Qt Company. For licensing terms |
||||||
|
** and conditions see https://www.qt.io/terms-conditions. For further
|
||||||
|
** information use the contact form at https://www.qt.io/contact-us.
|
||||||
|
** |
||||||
|
** BSD License Usage |
||||||
|
** Alternatively, you may use this file under the terms of the BSD license |
||||||
|
** as follows: |
||||||
|
** |
||||||
|
** "Redistribution and use in source and binary forms, with or without |
||||||
|
** modification, are permitted provided that the following conditions are |
||||||
|
** met: |
||||||
|
** * Redistributions of source code must retain the above copyright |
||||||
|
** notice, this list of conditions and the following disclaimer. |
||||||
|
** * Redistributions in binary form must reproduce the above copyright |
||||||
|
** notice, this list of conditions and the following disclaimer in |
||||||
|
** the documentation and/or other materials provided with the |
||||||
|
** distribution. |
||||||
|
** * Neither the name of The Qt Company Ltd nor the names of its |
||||||
|
** contributors may be used to endorse or promote products derived |
||||||
|
** from this software without specific prior written permission. |
||||||
|
** |
||||||
|
** |
||||||
|
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
||||||
|
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||||
|
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||||
|
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||||
|
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
||||||
|
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||||
|
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||||||
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||||
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||||||
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
||||||
|
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." |
||||||
|
** |
||||||
|
** $QT_END_LICENSE$ |
||||||
|
** |
||||||
|
****************************************************************************/ |
||||||
|
|
||||||
|
#include <QtWidgets> |
||||||
|
|
||||||
|
#include "button.h" |
||||||
|
|
||||||
|
//! [0]
|
||||||
|
Button::Button(const QString &text, QWidget *parent) |
||||||
|
: QToolButton(parent) |
||||||
|
{ |
||||||
|
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred); |
||||||
|
setText(text); |
||||||
|
} |
||||||
|
//! [0]
|
||||||
|
|
||||||
|
//! [1]
|
||||||
|
QSize Button::sizeHint() const |
||||||
|
//! [1] //! [2]
|
||||||
|
{ |
||||||
|
QSize size = QToolButton::sizeHint(); |
||||||
|
size.rheight() += 20; |
||||||
|
size.rwidth() = qMax(size.width(), size.height()); |
||||||
|
return size; |
||||||
|
} |
||||||
|
//! [2]
|
||||||
@ -0,0 +1,68 @@ |
|||||||
|
/****************************************************************************
|
||||||
|
** |
||||||
|
** Copyright (C) 2016 The Qt Company Ltd. |
||||||
|
** Contact: https://www.qt.io/licensing/
|
||||||
|
** |
||||||
|
** This file is part of the examples of the Qt Toolkit. |
||||||
|
** |
||||||
|
** $QT_BEGIN_LICENSE:BSD$ |
||||||
|
** Commercial License Usage |
||||||
|
** Licensees holding valid commercial Qt licenses may use this file in |
||||||
|
** accordance with the commercial license agreement provided with the |
||||||
|
** Software or, alternatively, in accordance with the terms contained in |
||||||
|
** a written agreement between you and The Qt Company. For licensing terms |
||||||
|
** and conditions see https://www.qt.io/terms-conditions. For further
|
||||||
|
** information use the contact form at https://www.qt.io/contact-us.
|
||||||
|
** |
||||||
|
** BSD License Usage |
||||||
|
** Alternatively, you may use this file under the terms of the BSD license |
||||||
|
** as follows: |
||||||
|
** |
||||||
|
** "Redistribution and use in source and binary forms, with or without |
||||||
|
** modification, are permitted provided that the following conditions are |
||||||
|
** met: |
||||||
|
** * Redistributions of source code must retain the above copyright |
||||||
|
** notice, this list of conditions and the following disclaimer. |
||||||
|
** * Redistributions in binary form must reproduce the above copyright |
||||||
|
** notice, this list of conditions and the following disclaimer in |
||||||
|
** the documentation and/or other materials provided with the |
||||||
|
** distribution. |
||||||
|
** * Neither the name of The Qt Company Ltd nor the names of its |
||||||
|
** contributors may be used to endorse or promote products derived |
||||||
|
** from this software without specific prior written permission. |
||||||
|
** |
||||||
|
** |
||||||
|
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
||||||
|
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||||
|
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||||
|
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||||
|
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
||||||
|
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||||
|
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||||||
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||||
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||||||
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
||||||
|
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." |
||||||
|
** |
||||||
|
** $QT_END_LICENSE$ |
||||||
|
** |
||||||
|
****************************************************************************/ |
||||||
|
|
||||||
|
#ifndef BUTTON_H |
||||||
|
#define BUTTON_H |
||||||
|
|
||||||
|
#include <QToolButton> |
||||||
|
|
||||||
|
//! [0]
|
||||||
|
class Button : public QToolButton |
||||||
|
{ |
||||||
|
Q_OBJECT |
||||||
|
|
||||||
|
public: |
||||||
|
explicit Button(const QString &text, QWidget *parent = 0); |
||||||
|
|
||||||
|
QSize sizeHint() const Q_DECL_OVERRIDE; |
||||||
|
}; |
||||||
|
//! [0]
|
||||||
|
|
||||||
|
#endif |
||||||
@ -0,0 +1,406 @@ |
|||||||
|
/****************************************************************************
|
||||||
|
** |
||||||
|
** Copyright (C) 2016 The Qt Company Ltd. |
||||||
|
** Contact: https://www.qt.io/licensing/
|
||||||
|
** |
||||||
|
** This file is part of the examples of the Qt Toolkit. |
||||||
|
** |
||||||
|
** $QT_BEGIN_LICENSE:BSD$ |
||||||
|
** Commercial License Usage |
||||||
|
** Licensees holding valid commercial Qt licenses may use this file in |
||||||
|
** accordance with the commercial license agreement provided with the |
||||||
|
** Software or, alternatively, in accordance with the terms contained in |
||||||
|
** a written agreement between you and The Qt Company. For licensing terms |
||||||
|
** and conditions see https://www.qt.io/terms-conditions. For further
|
||||||
|
** information use the contact form at https://www.qt.io/contact-us.
|
||||||
|
** |
||||||
|
** BSD License Usage |
||||||
|
** Alternatively, you may use this file under the terms of the BSD license |
||||||
|
** as follows: |
||||||
|
** |
||||||
|
** "Redistribution and use in source and binary forms, with or without |
||||||
|
** modification, are permitted provided that the following conditions are |
||||||
|
** met: |
||||||
|
** * Redistributions of source code must retain the above copyright |
||||||
|
** notice, this list of conditions and the following disclaimer. |
||||||
|
** * Redistributions in binary form must reproduce the above copyright |
||||||
|
** notice, this list of conditions and the following disclaimer in |
||||||
|
** the documentation and/or other materials provided with the |
||||||
|
** distribution. |
||||||
|
** * Neither the name of The Qt Company Ltd nor the names of its |
||||||
|
** contributors may be used to endorse or promote products derived |
||||||
|
** from this software without specific prior written permission. |
||||||
|
** |
||||||
|
** |
||||||
|
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
||||||
|
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||||
|
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||||
|
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||||
|
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
||||||
|
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||||
|
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||||||
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||||
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||||||
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
||||||
|
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." |
||||||
|
** |
||||||
|
** $QT_END_LICENSE$ |
||||||
|
** |
||||||
|
****************************************************************************/ |
||||||
|
|
||||||
|
#include <QtWidgets> |
||||||
|
|
||||||
|
#include <cmath> |
||||||
|
|
||||||
|
#include "button.h" |
||||||
|
#include "calculator.h" |
||||||
|
|
||||||
|
//! [0]
|
||||||
|
Calculator::Calculator(QWidget *parent) |
||||||
|
: QWidget(parent) |
||||||
|
{ |
||||||
|
sumInMemory = 0.0; |
||||||
|
sumSoFar = 0.0; |
||||||
|
factorSoFar = 0.0; |
||||||
|
waitingForOperand = true; |
||||||
|
//! [0]
|
||||||
|
|
||||||
|
//! [1]
|
||||||
|
display = new QLineEdit("0"); |
||||||
|
//! [1] //! [2]
|
||||||
|
display->setReadOnly(true); |
||||||
|
display->setAlignment(Qt::AlignRight); |
||||||
|
display->setMaxLength(15); |
||||||
|
|
||||||
|
QFont font = display->font(); |
||||||
|
font.setPointSize(font.pointSize() + 8); |
||||||
|
display->setFont(font); |
||||||
|
//! [2]
|
||||||
|
|
||||||
|
//! [4]
|
||||||
|
for (int i = 0; i < NumDigitButtons; ++i) { |
||||||
|
digitButtons[i] = createButton(QString::number(i), SLOT(digitClicked())); |
||||||
|
} |
||||||
|
|
||||||
|
Button *pointButton = createButton(".", SLOT(pointClicked())); |
||||||
|
Button *changeSignButton = createButton("\302\261", SLOT(changeSignClicked())); |
||||||
|
|
||||||
|
Button *backspaceButton = createButton("Backspace", SLOT(backspaceClicked())); |
||||||
|
Button *clearButton = createButton("Clear", SLOT(clear())); |
||||||
|
Button *clearAllButton = createButton("Clear All", SLOT(clearAll())); |
||||||
|
|
||||||
|
Button *clearMemoryButton = createButton("MC", SLOT(clearMemory())); |
||||||
|
Button *readMemoryButton = createButton("MR", SLOT(readMemory())); |
||||||
|
Button *setMemoryButton = createButton("MS", SLOT(setMemory())); |
||||||
|
Button *addToMemoryButton = createButton("M+", SLOT(addToMemory())); |
||||||
|
|
||||||
|
Button *divisionButton = createButton("\303\267", SLOT(multiplicativeOperatorClicked())); |
||||||
|
Button *timesButton = createButton("\303\227", SLOT(multiplicativeOperatorClicked())); |
||||||
|
Button *minusButton = createButton("-", SLOT(additiveOperatorClicked())); |
||||||
|
Button *plusButton = createButton("+", SLOT(additiveOperatorClicked())); |
||||||
|
|
||||||
|
Button *squareRootButton = createButton("Sqrt", SLOT(unaryOperatorClicked())); |
||||||
|
Button *powerButton = createButton("x\302\262", SLOT(unaryOperatorClicked())); |
||||||
|
Button *reciprocalButton = createButton("1/x", SLOT(unaryOperatorClicked())); |
||||||
|
Button *equalButton = createButton("=", SLOT(equalClicked())); |
||||||
|
//! [4]
|
||||||
|
|
||||||
|
//! [5]
|
||||||
|
QGridLayout *mainLayout = new QGridLayout; |
||||||
|
//! [5] //! [6]
|
||||||
|
mainLayout->setSizeConstraint(QLayout::SetFixedSize); |
||||||
|
mainLayout->addWidget(display, 0, 0, 1, 6); |
||||||
|
mainLayout->addWidget(backspaceButton, 1, 0, 1, 2); |
||||||
|
mainLayout->addWidget(clearButton, 1, 2, 1, 2); |
||||||
|
mainLayout->addWidget(clearAllButton, 1, 4, 1, 2); |
||||||
|
|
||||||
|
mainLayout->addWidget(clearMemoryButton, 2, 0); |
||||||
|
mainLayout->addWidget(readMemoryButton, 3, 0); |
||||||
|
mainLayout->addWidget(setMemoryButton, 4, 0); |
||||||
|
mainLayout->addWidget(addToMemoryButton, 5, 0); |
||||||
|
|
||||||
|
for (int i = 1; i < NumDigitButtons; ++i) { |
||||||
|
int row = ((9 - i) / 3) + 2; |
||||||
|
int column = ((i - 1) % 3) + 1; |
||||||
|
mainLayout->addWidget(digitButtons[i], row, column); |
||||||
|
} |
||||||
|
|
||||||
|
mainLayout->addWidget(digitButtons[0], 5, 1); |
||||||
|
mainLayout->addWidget(pointButton, 5, 2); |
||||||
|
mainLayout->addWidget(changeSignButton, 5, 3); |
||||||
|
|
||||||
|
mainLayout->addWidget(divisionButton, 2, 4); |
||||||
|
mainLayout->addWidget(timesButton, 3, 4); |
||||||
|
mainLayout->addWidget(minusButton, 4, 4); |
||||||
|
mainLayout->addWidget(plusButton, 5, 4); |
||||||
|
|
||||||
|
mainLayout->addWidget(squareRootButton, 2, 5); |
||||||
|
mainLayout->addWidget(powerButton, 3, 5); |
||||||
|
mainLayout->addWidget(reciprocalButton, 4, 5); |
||||||
|
mainLayout->addWidget(equalButton, 5, 5); |
||||||
|
setLayout(mainLayout); |
||||||
|
|
||||||
|
setWindowTitle("Calculator"); |
||||||
|
} |
||||||
|
//! [6]
|
||||||
|
|
||||||
|
//! [7]
|
||||||
|
void Calculator::digitClicked() |
||||||
|
{ |
||||||
|
Button *clickedButton = qobject_cast<Button *>(sender()); |
||||||
|
int digitValue = clickedButton->text().toInt(); |
||||||
|
if (display->text() == "0" && digitValue == 0.0) |
||||||
|
return; |
||||||
|
|
||||||
|
if (waitingForOperand) { |
||||||
|
display->clear(); |
||||||
|
waitingForOperand = false; |
||||||
|
} |
||||||
|
display->setText(display->text() + QString::number(digitValue)); |
||||||
|
} |
||||||
|
//! [7]
|
||||||
|
|
||||||
|
//! [8]
|
||||||
|
void Calculator::unaryOperatorClicked() |
||||||
|
//! [8] //! [9]
|
||||||
|
{ |
||||||
|
Button *clickedButton = qobject_cast<Button *>(sender()); |
||||||
|
QString clickedOperator = clickedButton->text(); |
||||||
|
double operand = display->text().toDouble(); |
||||||
|
double result = 0.0; |
||||||
|
|
||||||
|
if (clickedOperator == "Sqrt") { |
||||||
|
if (operand < 0.0) { |
||||||
|
abortOperation(); |
||||||
|
return; |
||||||
|
} |
||||||
|
result = std::sqrt(operand); |
||||||
|
} else if (clickedOperator == "x\302\262") { |
||||||
|
result = std::pow(operand, 2.0); |
||||||
|
} else if (clickedOperator == "1/x") { |
||||||
|
if (operand == 0.0) { |
||||||
|
abortOperation(); |
||||||
|
return; |
||||||
|
} |
||||||
|
result = 1.0 / operand; |
||||||
|
} |
||||||
|
display->setText(QString::number(result)); |
||||||
|
waitingForOperand = true; |
||||||
|
} |
||||||
|
//! [9]
|
||||||
|
|
||||||
|
//! [10]
|
||||||
|
void Calculator::additiveOperatorClicked() |
||||||
|
//! [10] //! [11]
|
||||||
|
{ |
||||||
|
Button *clickedButton = qobject_cast<Button *>(sender()); |
||||||
|
QString clickedOperator = clickedButton->text(); |
||||||
|
double operand = display->text().toDouble(); |
||||||
|
|
||||||
|
//! [11] //! [12]
|
||||||
|
if (!pendingMultiplicativeOperator.isEmpty()) { |
||||||
|
//! [12] //! [13]
|
||||||
|
if (!calculate(operand, pendingMultiplicativeOperator)) { |
||||||
|
abortOperation(); |
||||||
|
return; |
||||||
|
} |
||||||
|
display->setText(QString::number(factorSoFar)); |
||||||
|
operand = factorSoFar; |
||||||
|
factorSoFar = 0.0; |
||||||
|
pendingMultiplicativeOperator.clear(); |
||||||
|
} |
||||||
|
|
||||||
|
//! [13] //! [14]
|
||||||
|
if (!pendingAdditiveOperator.isEmpty()) { |
||||||
|
//! [14] //! [15]
|
||||||
|
if (!calculate(operand, pendingAdditiveOperator)) { |
||||||
|
abortOperation(); |
||||||
|
return; |
||||||
|
} |
||||||
|
display->setText(QString::number(sumSoFar)); |
||||||
|
} else { |
||||||
|
sumSoFar = operand; |
||||||
|
} |
||||||
|
|
||||||
|
//! [15] //! [16]
|
||||||
|
pendingAdditiveOperator = clickedOperator; |
||||||
|
//! [16] //! [17]
|
||||||
|
waitingForOperand = true; |
||||||
|
} |
||||||
|
//! [17]
|
||||||
|
|
||||||
|
//! [18]
|
||||||
|
void Calculator::multiplicativeOperatorClicked() |
||||||
|
{ |
||||||
|
Button *clickedButton = qobject_cast<Button *>(sender()); |
||||||
|
QString clickedOperator = clickedButton->text(); |
||||||
|
double operand = display->text().toDouble(); |
||||||
|
|
||||||
|
if (!pendingMultiplicativeOperator.isEmpty()) { |
||||||
|
if (!calculate(operand, pendingMultiplicativeOperator)) { |
||||||
|
abortOperation(); |
||||||
|
return; |
||||||
|
} |
||||||
|
display->setText(QString::number(factorSoFar)); |
||||||
|
} else { |
||||||
|
factorSoFar = operand; |
||||||
|
} |
||||||
|
|
||||||
|
pendingMultiplicativeOperator = clickedOperator; |
||||||
|
waitingForOperand = true; |
||||||
|
} |
||||||
|
//! [18]
|
||||||
|
|
||||||
|
//! [20]
|
||||||
|
void Calculator::equalClicked() |
||||||
|
{ |
||||||
|
double operand = display->text().toDouble(); |
||||||
|
|
||||||
|
if (!pendingMultiplicativeOperator.isEmpty()) { |
||||||
|
if (!calculate(operand, pendingMultiplicativeOperator)) { |
||||||
|
abortOperation(); |
||||||
|
return; |
||||||
|
} |
||||||
|
operand = factorSoFar; |
||||||
|
factorSoFar = 0.0; |
||||||
|
pendingMultiplicativeOperator.clear(); |
||||||
|
} |
||||||
|
if (!pendingAdditiveOperator.isEmpty()) { |
||||||
|
if (!calculate(operand, pendingAdditiveOperator)) { |
||||||
|
abortOperation(); |
||||||
|
return; |
||||||
|
} |
||||||
|
pendingAdditiveOperator.clear(); |
||||||
|
} else { |
||||||
|
sumSoFar = operand; |
||||||
|
} |
||||||
|
|
||||||
|
display->setText(QString::number(sumSoFar)); |
||||||
|
sumSoFar = 0.0; |
||||||
|
waitingForOperand = true; |
||||||
|
} |
||||||
|
//! [20]
|
||||||
|
|
||||||
|
//! [22]
|
||||||
|
void Calculator::pointClicked() |
||||||
|
{ |
||||||
|
if (waitingForOperand) |
||||||
|
display->setText("0"); |
||||||
|
if (!display->text().contains('.')) |
||||||
|
display->setText(display->text() + "."); |
||||||
|
waitingForOperand = false; |
||||||
|
} |
||||||
|
//! [22]
|
||||||
|
|
||||||
|
//! [24]
|
||||||
|
void Calculator::changeSignClicked() |
||||||
|
{ |
||||||
|
QString text = display->text(); |
||||||
|
double value = text.toDouble(); |
||||||
|
|
||||||
|
if (value > 0.0) { |
||||||
|
text.prepend("-"); |
||||||
|
} else if (value < 0.0) { |
||||||
|
text.remove(0, 1); |
||||||
|
} |
||||||
|
display->setText(text); |
||||||
|
} |
||||||
|
//! [24]
|
||||||
|
|
||||||
|
//! [26]
|
||||||
|
void Calculator::backspaceClicked() |
||||||
|
{ |
||||||
|
if (waitingForOperand) |
||||||
|
return; |
||||||
|
|
||||||
|
QString text = display->text(); |
||||||
|
text.chop(1); |
||||||
|
if (text.isEmpty()) { |
||||||
|
text = "0"; |
||||||
|
waitingForOperand = true; |
||||||
|
} |
||||||
|
display->setText(text); |
||||||
|
} |
||||||
|
//! [26]
|
||||||
|
|
||||||
|
//! [28]
|
||||||
|
void Calculator::clear() |
||||||
|
{ |
||||||
|
if (waitingForOperand) |
||||||
|
return; |
||||||
|
|
||||||
|
display->setText("0"); |
||||||
|
waitingForOperand = true; |
||||||
|
} |
||||||
|
//! [28]
|
||||||
|
|
||||||
|
//! [30]
|
||||||
|
void Calculator::clearAll() |
||||||
|
{ |
||||||
|
sumSoFar = 0.0; |
||||||
|
factorSoFar = 0.0; |
||||||
|
pendingAdditiveOperator.clear(); |
||||||
|
pendingMultiplicativeOperator.clear(); |
||||||
|
display->setText("0"); |
||||||
|
waitingForOperand = true; |
||||||
|
} |
||||||
|
//! [30]
|
||||||
|
|
||||||
|
//! [32]
|
||||||
|
void Calculator::clearMemory() |
||||||
|
{ |
||||||
|
sumInMemory = 0.0; |
||||||
|
} |
||||||
|
|
||||||
|
void Calculator::readMemory() |
||||||
|
{ |
||||||
|
display->setText(QString::number(sumInMemory)); |
||||||
|
waitingForOperand = true; |
||||||
|
} |
||||||
|
|
||||||
|
void Calculator::setMemory() |
||||||
|
{ |
||||||
|
equalClicked(); |
||||||
|
sumInMemory = display->text().toDouble(); |
||||||
|
} |
||||||
|
|
||||||
|
void Calculator::addToMemory() |
||||||
|
{ |
||||||
|
equalClicked(); |
||||||
|
sumInMemory += display->text().toDouble(); |
||||||
|
} |
||||||
|
//! [32]
|
||||||
|
//! [34]
|
||||||
|
Button *Calculator::createButton(const QString &text, const char *member) |
||||||
|
{ |
||||||
|
Button *button = new Button(text); |
||||||
|
connect(button, SIGNAL(clicked()), this, member); |
||||||
|
return button; |
||||||
|
} |
||||||
|
//! [34]
|
||||||
|
|
||||||
|
//! [36]
|
||||||
|
void Calculator::abortOperation() |
||||||
|
{ |
||||||
|
clearAll(); |
||||||
|
display->setText("####"); |
||||||
|
} |
||||||
|
//! [36]
|
||||||
|
|
||||||
|
//! [38]
|
||||||
|
bool Calculator::calculate(double rightOperand, const QString &pendingOperator) |
||||||
|
{ |
||||||
|
if (pendingOperator == "+") { |
||||||
|
sumSoFar += rightOperand; |
||||||
|
} else if (pendingOperator == "-") { |
||||||
|
sumSoFar -= rightOperand; |
||||||
|
} else if (pendingOperator == "\303\227") { |
||||||
|
factorSoFar *= rightOperand; |
||||||
|
} else if (pendingOperator == "\303\267") { |
||||||
|
if (rightOperand == 0.0) |
||||||
|
return false; |
||||||
|
factorSoFar /= rightOperand; |
||||||
|
} |
||||||
|
return true; |
||||||
|
} |
||||||
|
//! [38]
|
||||||
@ -0,0 +1,117 @@ |
|||||||
|
/****************************************************************************
|
||||||
|
** |
||||||
|
** Copyright (C) 2016 The Qt Company Ltd. |
||||||
|
** Contact: https://www.qt.io/licensing/
|
||||||
|
** |
||||||
|
** This file is part of the examples of the Qt Toolkit. |
||||||
|
** |
||||||
|
** $QT_BEGIN_LICENSE:BSD$ |
||||||
|
** Commercial License Usage |
||||||
|
** Licensees holding valid commercial Qt licenses may use this file in |
||||||
|
** accordance with the commercial license agreement provided with the |
||||||
|
** Software or, alternatively, in accordance with the terms contained in |
||||||
|
** a written agreement between you and The Qt Company. For licensing terms |
||||||
|
** and conditions see https://www.qt.io/terms-conditions. For further
|
||||||
|
** information use the contact form at https://www.qt.io/contact-us.
|
||||||
|
** |
||||||
|
** BSD License Usage |
||||||
|
** Alternatively, you may use this file under the terms of the BSD license |
||||||
|
** as follows: |
||||||
|
** |
||||||
|
** "Redistribution and use in source and binary forms, with or without |
||||||
|
** modification, are permitted provided that the following conditions are |
||||||
|
** met: |
||||||
|
** * Redistributions of source code must retain the above copyright |
||||||
|
** notice, this list of conditions and the following disclaimer. |
||||||
|
** * Redistributions in binary form must reproduce the above copyright |
||||||
|
** notice, this list of conditions and the following disclaimer in |
||||||
|
** the documentation and/or other materials provided with the |
||||||
|
** distribution. |
||||||
|
** * Neither the name of The Qt Company Ltd nor the names of its |
||||||
|
** contributors may be used to endorse or promote products derived |
||||||
|
** from this software without specific prior written permission. |
||||||
|
** |
||||||
|
** |
||||||
|
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
||||||
|
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||||
|
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||||
|
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||||
|
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
||||||
|
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||||
|
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||||||
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||||
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||||||
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
||||||
|
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." |
||||||
|
** |
||||||
|
** $QT_END_LICENSE$ |
||||||
|
** |
||||||
|
****************************************************************************/ |
||||||
|
|
||||||
|
#ifndef CALCULATOR_H |
||||||
|
#define CALCULATOR_H |
||||||
|
|
||||||
|
#include <QWidget> |
||||||
|
|
||||||
|
QT_BEGIN_NAMESPACE |
||||||
|
class QLineEdit; |
||||||
|
QT_END_NAMESPACE |
||||||
|
class Button; |
||||||
|
|
||||||
|
//! [0]
|
||||||
|
class Calculator : public QWidget |
||||||
|
{ |
||||||
|
Q_OBJECT |
||||||
|
|
||||||
|
public: |
||||||
|
Calculator(QWidget *parent = 0); |
||||||
|
|
||||||
|
private slots: |
||||||
|
void digitClicked(); |
||||||
|
void unaryOperatorClicked(); |
||||||
|
void additiveOperatorClicked(); |
||||||
|
void multiplicativeOperatorClicked(); |
||||||
|
void equalClicked(); |
||||||
|
void pointClicked(); |
||||||
|
void changeSignClicked(); |
||||||
|
void backspaceClicked(); |
||||||
|
void clear(); |
||||||
|
void clearAll(); |
||||||
|
void clearMemory(); |
||||||
|
void readMemory(); |
||||||
|
void setMemory(); |
||||||
|
void addToMemory(); |
||||||
|
//! [0]
|
||||||
|
|
||||||
|
//! [1]
|
||||||
|
private: |
||||||
|
//! [1] //! [2]
|
||||||
|
Button *createButton(const QString &text, const char *member); |
||||||
|
void abortOperation(); |
||||||
|
bool calculate(double rightOperand, const QString &pendingOperator); |
||||||
|
//! [2]
|
||||||
|
|
||||||
|
//! [3]
|
||||||
|
double sumInMemory; |
||||||
|
//! [3] //! [4]
|
||||||
|
double sumSoFar; |
||||||
|
//! [4] //! [5]
|
||||||
|
double factorSoFar; |
||||||
|
//! [5] //! [6]
|
||||||
|
QString pendingAdditiveOperator; |
||||||
|
//! [6] //! [7]
|
||||||
|
QString pendingMultiplicativeOperator; |
||||||
|
//! [7] //! [8]
|
||||||
|
bool waitingForOperand; |
||||||
|
//! [8]
|
||||||
|
|
||||||
|
//! [9]
|
||||||
|
QLineEdit *display; |
||||||
|
//! [9] //! [10]
|
||||||
|
|
||||||
|
enum { NumDigitButtons = 10 }; |
||||||
|
Button *digitButtons[NumDigitButtons]; |
||||||
|
}; |
||||||
|
//! [10]
|
||||||
|
|
||||||
|
#endif |
||||||
@ -0,0 +1,11 @@ |
|||||||
|
QT += widgets |
||||||
|
|
||||||
|
HEADERS = button.h \ |
||||||
|
calculator.h |
||||||
|
SOURCES = button.cpp \ |
||||||
|
calculator.cpp \ |
||||||
|
main.cpp |
||||||
|
|
||||||
|
# Single Application implementation |
||||||
|
include(../../singleapplication.pri) |
||||||
|
DEFINES += QAPPLICATION_CLASS=QApplication |
||||||
@ -0,0 +1,71 @@ |
|||||||
|
/****************************************************************************
|
||||||
|
** |
||||||
|
** Copyright (C) 2016 The Qt Company Ltd. |
||||||
|
** Contact: https://www.qt.io/licensing/
|
||||||
|
** |
||||||
|
** This file is part of the examples of the Qt Toolkit. |
||||||
|
** |
||||||
|
** $QT_BEGIN_LICENSE:BSD$ |
||||||
|
** Commercial License Usage |
||||||
|
** Licensees holding valid commercial Qt licenses may use this file in |
||||||
|
** accordance with the commercial license agreement provided with the |
||||||
|
** Software or, alternatively, in accordance with the terms contained in |
||||||
|
** a written agreement between you and The Qt Company. For licensing terms |
||||||
|
** and conditions see https://www.qt.io/terms-conditions. For further
|
||||||
|
** information use the contact form at https://www.qt.io/contact-us.
|
||||||
|
** |
||||||
|
** BSD License Usage |
||||||
|
** Alternatively, you may use this file under the terms of the BSD license |
||||||
|
** as follows: |
||||||
|
** |
||||||
|
** "Redistribution and use in source and binary forms, with or without |
||||||
|
** modification, are permitted provided that the following conditions are |
||||||
|
** met: |
||||||
|
** * Redistributions of source code must retain the above copyright |
||||||
|
** notice, this list of conditions and the following disclaimer. |
||||||
|
** * Redistributions in binary form must reproduce the above copyright |
||||||
|
** notice, this list of conditions and the following disclaimer in |
||||||
|
** the documentation and/or other materials provided with the |
||||||
|
** distribution. |
||||||
|
** * Neither the name of The Qt Company Ltd nor the names of its |
||||||
|
** contributors may be used to endorse or promote products derived |
||||||
|
** from this software without specific prior written permission. |
||||||
|
** |
||||||
|
** |
||||||
|
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
||||||
|
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||||
|
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||||
|
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||||
|
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
||||||
|
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||||
|
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||||||
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||||
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||||||
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
||||||
|
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." |
||||||
|
** |
||||||
|
** $QT_END_LICENSE$ |
||||||
|
** |
||||||
|
****************************************************************************/ |
||||||
|
|
||||||
|
#include <QApplication> |
||||||
|
|
||||||
|
#include <singleapplication.h> |
||||||
|
|
||||||
|
#include "calculator.h" |
||||||
|
|
||||||
|
int main(int argc, char *argv[]) |
||||||
|
{ |
||||||
|
SingleApplication app(argc, argv); |
||||||
|
|
||||||
|
Calculator calc; |
||||||
|
|
||||||
|
QObject::connect( &app, &SingleApplication::instanceStarted, [ &calc ]() { |
||||||
|
calc.raise(); |
||||||
|
calc.activateWindow(); |
||||||
|
}); |
||||||
|
|
||||||
|
calc.show(); |
||||||
|
|
||||||
|
return app.exec(); |
||||||
|
} |
||||||
@ -0,0 +1,20 @@ |
|||||||
|
cmake_minimum_required(VERSION 3.7.0) |
||||||
|
|
||||||
|
project(sending_arguments LANGUAGES CXX) |
||||||
|
|
||||||
|
set(CMAKE_AUTOMOC ON) |
||||||
|
|
||||||
|
# SingleApplication base class |
||||||
|
set(QAPPLICATION_CLASS QCoreApplication) |
||||||
|
add_subdirectory(../.. SingleApplication) |
||||||
|
|
||||||
|
find_package(Qt${QT_DEFAULT_MAJOR_VERSION} COMPONENTS Core REQUIRED) |
||||||
|
|
||||||
|
add_executable(${PROJECT_NAME} |
||||||
|
main.cpp |
||||||
|
messagereceiver.cpp |
||||||
|
messagereceiver.h |
||||||
|
main.cpp |
||||||
|
) |
||||||
|
|
||||||
|
target_link_libraries(${PROJECT_NAME} SingleApplication::SingleApplication) |
||||||
@ -0,0 +1,28 @@ |
|||||||
|
#include <singleapplication.h> |
||||||
|
#include "messagereceiver.h" |
||||||
|
|
||||||
|
int main(int argc, char *argv[]) |
||||||
|
{ |
||||||
|
// Allow secondary instances
|
||||||
|
SingleApplication app( argc, argv, true ); |
||||||
|
|
||||||
|
MessageReceiver msgReceiver; |
||||||
|
|
||||||
|
// If this is a secondary instance
|
||||||
|
if( app.isSecondary() ) { |
||||||
|
app.sendMessage( app.arguments().join(' ').toUtf8() ); |
||||||
|
qDebug() << "App already running."; |
||||||
|
qDebug() << "Primary instance PID: " << app.primaryPid(); |
||||||
|
qDebug() << "Primary instance user: " << app.primaryUser(); |
||||||
|
return 0; |
||||||
|
} else { |
||||||
|
QObject::connect( |
||||||
|
&app, |
||||||
|
&SingleApplication::receivedMessage, |
||||||
|
&msgReceiver, |
||||||
|
&MessageReceiver::receivedMessage |
||||||
|
); |
||||||
|
} |
||||||
|
|
||||||
|
return app.exec(); |
||||||
|
} |
||||||
@ -0,0 +1,12 @@ |
|||||||
|
#include <QDebug> |
||||||
|
#include "messagereceiver.h" |
||||||
|
|
||||||
|
MessageReceiver::MessageReceiver(QObject *parent) : QObject(parent) |
||||||
|
{ |
||||||
|
} |
||||||
|
|
||||||
|
void MessageReceiver::receivedMessage(int instanceId, QByteArray message) |
||||||
|
{ |
||||||
|
qDebug() << "Received message from instance: " << instanceId; |
||||||
|
qDebug() << "Message Text: " << message; |
||||||
|
} |
||||||
@ -0,0 +1,15 @@ |
|||||||
|
#ifndef MESSAGERECEIVER_H |
||||||
|
#define MESSAGERECEIVER_H |
||||||
|
|
||||||
|
#include <QObject> |
||||||
|
|
||||||
|
class MessageReceiver : public QObject |
||||||
|
{ |
||||||
|
Q_OBJECT |
||||||
|
public: |
||||||
|
explicit MessageReceiver(QObject *parent = 0); |
||||||
|
public slots: |
||||||
|
void receivedMessage( int instanceId, QByteArray message ); |
||||||
|
}; |
||||||
|
|
||||||
|
#endif // MESSAGERECEIVER_H
|
||||||
@ -0,0 +1,9 @@ |
|||||||
|
# Single Application implementation |
||||||
|
include(../../singleapplication.pri) |
||||||
|
DEFINES += QAPPLICATION_CLASS=QCoreApplication |
||||||
|
|
||||||
|
SOURCES += main.cpp \ |
||||||
|
messagereceiver.cpp |
||||||
|
|
||||||
|
HEADERS += \ |
||||||
|
messagereceiver.h |
||||||
@ -0,0 +1,23 @@ |
|||||||
|
project('SingleApplication', 'cpp', default_options : ['default_library=static']) |
||||||
|
|
||||||
|
qt5 = import('qt5') |
||||||
|
qt5_dep = dependency('qt5', modules: ['Core', 'Network', 'Widgets'], include_type: 'system') |
||||||
|
|
||||||
|
deps = [qt5_dep] |
||||||
|
|
||||||
|
if host_machine.system() == 'windows' |
||||||
|
deps += meson.get_compiler('cpp').find_library('advapi32') |
||||||
|
endif |
||||||
|
|
||||||
|
moc_files = qt5.compile_moc( |
||||||
|
headers: ['singleapplication.h', 'singleapplication_p.h'], |
||||||
|
extra_args: '-DQAPPLICATION_CLASS=QApplication') |
||||||
|
lib = static_library('SingleApplication', 'singleapplication.cpp', 'singleapplication_p.cpp', moc_files, |
||||||
|
dependencies: qt5_dep, |
||||||
|
cpp_args: '-DQAPPLICATION_CLASS=QApplication') |
||||||
|
|
||||||
|
singleapplication_dep = declare_dependency(link_with: lib, |
||||||
|
include_directories: '.', |
||||||
|
compile_args: '-DQAPPLICATION_CLASS=QApplication') |
||||||
|
meson.override_dependency('singleapplication', singleapplication_dep) |
||||||
|
|
||||||
@ -0,0 +1,271 @@ |
|||||||
|
// The MIT License (MIT)
|
||||||
|
//
|
||||||
|
// Copyright (c) Itay Grudev 2015 - 2020
|
||||||
|
//
|
||||||
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||||
|
// of this software and associated documentation files (the "Software"), to deal
|
||||||
|
// in the Software without restriction, including without limitation the rights
|
||||||
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||||
|
// copies of the Software, and to permit persons to whom the Software is
|
||||||
|
// furnished to do so, subject to the following conditions:
|
||||||
|
//
|
||||||
|
// The above copyright notice and this permission notice shall be included in
|
||||||
|
// all copies or substantial portions of the Software.
|
||||||
|
//
|
||||||
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||||
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||||
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||||
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
|
// THE SOFTWARE.
|
||||||
|
|
||||||
|
#include <QtCore/QElapsedTimer> |
||||||
|
#include <QtCore/QByteArray> |
||||||
|
#include <QtCore/QSharedMemory> |
||||||
|
|
||||||
|
#include "singleapplication.h" |
||||||
|
#include "singleapplication_p.h" |
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Constructor. Checks and fires up LocalServer or closes the program |
||||||
|
* if another instance already exists |
||||||
|
* @param argc |
||||||
|
* @param argv |
||||||
|
* @param allowSecondary Whether to enable secondary instance support |
||||||
|
* @param options Optional flags to toggle specific behaviour |
||||||
|
* @param timeout Maximum time blocking functions are allowed during app load |
||||||
|
*/ |
||||||
|
SingleApplication::SingleApplication( int &argc, char *argv[], bool allowSecondary, Options options, int timeout, const QString &userData ) |
||||||
|
: app_t( argc, argv ), d_ptr( new SingleApplicationPrivate( this ) ) |
||||||
|
{ |
||||||
|
Q_D( SingleApplication ); |
||||||
|
|
||||||
|
#if defined(Q_OS_ANDROID) || defined(Q_OS_IOS) |
||||||
|
// On Android and iOS since the library is not supported fallback to
|
||||||
|
// standard QApplication behaviour by simply returning at this point.
|
||||||
|
qWarning() << "SingleApplication is not supported on Android and iOS systems."; |
||||||
|
return; |
||||||
|
#endif |
||||||
|
|
||||||
|
// Store the current mode of the program
|
||||||
|
d->options = options; |
||||||
|
|
||||||
|
// Add any unique user data
|
||||||
|
if ( ! userData.isEmpty() ) |
||||||
|
d->addAppData( userData ); |
||||||
|
|
||||||
|
// Generating an application ID used for identifying the shared memory
|
||||||
|
// block and QLocalServer
|
||||||
|
d->genBlockServerName(); |
||||||
|
|
||||||
|
// To mitigate QSharedMemory issues with large amount of processes
|
||||||
|
// attempting to attach at the same time
|
||||||
|
SingleApplicationPrivate::randomSleep(); |
||||||
|
|
||||||
|
#ifdef Q_OS_UNIX |
||||||
|
// By explicitly attaching it and then deleting it we make sure that the
|
||||||
|
// memory is deleted even after the process has crashed on Unix.
|
||||||
|
d->memory = new QSharedMemory( d->blockServerName ); |
||||||
|
d->memory->attach(); |
||||||
|
delete d->memory; |
||||||
|
#endif |
||||||
|
// Guarantee thread safe behaviour with a shared memory block.
|
||||||
|
d->memory = new QSharedMemory( d->blockServerName ); |
||||||
|
|
||||||
|
// Create a shared memory block
|
||||||
|
if( d->memory->create( sizeof( InstancesInfo ) )){ |
||||||
|
// Initialize the shared memory block
|
||||||
|
if( ! d->memory->lock() ){ |
||||||
|
qCritical() << "SingleApplication: Unable to lock memory block after create."; |
||||||
|
abortSafely(); |
||||||
|
} |
||||||
|
d->initializeMemoryBlock(); |
||||||
|
} else { |
||||||
|
if( d->memory->error() == QSharedMemory::AlreadyExists ){ |
||||||
|
// Attempt to attach to the memory segment
|
||||||
|
if( ! d->memory->attach() ){ |
||||||
|
qCritical() << "SingleApplication: Unable to attach to shared memory block."; |
||||||
|
abortSafely(); |
||||||
|
} |
||||||
|
if( ! d->memory->lock() ){ |
||||||
|
qCritical() << "SingleApplication: Unable to lock memory block after attach."; |
||||||
|
abortSafely(); |
||||||
|
} |
||||||
|
} else { |
||||||
|
qCritical() << "SingleApplication: Unable to create block."; |
||||||
|
abortSafely(); |
||||||
|
} |
||||||
|
} |
||||||
|
|
||||||
|
auto *inst = static_cast<InstancesInfo*>( d->memory->data() ); |
||||||
|
QElapsedTimer time; |
||||||
|
time.start(); |
||||||
|
|
||||||
|
// Make sure the shared memory block is initialised and in consistent state
|
||||||
|
while( true ){ |
||||||
|
// If the shared memory block's checksum is valid continue
|
||||||
|
if( d->blockChecksum() == inst->checksum ) break; |
||||||
|
|
||||||
|
// If more than 5s have elapsed, assume the primary instance crashed and
|
||||||
|
// assume it's position
|
||||||
|
if( time.elapsed() > 5000 ){ |
||||||
|
qWarning() << "SingleApplication: Shared memory block has been in an inconsistent state from more than 5s. Assuming primary instance failure."; |
||||||
|
d->initializeMemoryBlock(); |
||||||
|
} |
||||||
|
|
||||||
|
// Otherwise wait for a random period and try again. The random sleep here
|
||||||
|
// limits the probability of a collision between two racing apps and
|
||||||
|
// allows the app to initialise faster
|
||||||
|
if( ! d->memory->unlock() ){ |
||||||
|
qDebug() << "SingleApplication: Unable to unlock memory for random wait."; |
||||||
|
qDebug() << d->memory->errorString(); |
||||||
|
} |
||||||
|
SingleApplicationPrivate::randomSleep(); |
||||||
|
if( ! d->memory->lock() ){ |
||||||
|
qCritical() << "SingleApplication: Unable to lock memory after random wait."; |
||||||
|
abortSafely(); |
||||||
|
} |
||||||
|
} |
||||||
|
|
||||||
|
if( inst->primary == false ){ |
||||||
|
d->startPrimary(); |
||||||
|
if( ! d->memory->unlock() ){ |
||||||
|
qDebug() << "SingleApplication: Unable to unlock memory after primary start."; |
||||||
|
qDebug() << d->memory->errorString(); |
||||||
|
} |
||||||
|
return; |
||||||
|
} |
||||||
|
|
||||||
|
// Check if another instance can be started
|
||||||
|
if( allowSecondary ){ |
||||||
|
d->startSecondary(); |
||||||
|
if( d->options & Mode::SecondaryNotification ){ |
||||||
|
d->connectToPrimary( timeout, SingleApplicationPrivate::SecondaryInstance ); |
||||||
|
} |
||||||
|
if( ! d->memory->unlock() ){ |
||||||
|
qDebug() << "SingleApplication: Unable to unlock memory after secondary start."; |
||||||
|
qDebug() << d->memory->errorString(); |
||||||
|
} |
||||||
|
return; |
||||||
|
} |
||||||
|
|
||||||
|
if( ! d->memory->unlock() ){ |
||||||
|
qDebug() << "SingleApplication: Unable to unlock memory at end of execution."; |
||||||
|
qDebug() << d->memory->errorString(); |
||||||
|
} |
||||||
|
|
||||||
|
d->connectToPrimary( timeout, SingleApplicationPrivate::NewInstance ); |
||||||
|
|
||||||
|
delete d; |
||||||
|
|
||||||
|
::exit( EXIT_SUCCESS ); |
||||||
|
} |
||||||
|
|
||||||
|
SingleApplication::~SingleApplication() |
||||||
|
{ |
||||||
|
Q_D( SingleApplication ); |
||||||
|
delete d; |
||||||
|
} |
||||||
|
|
||||||
|
/**
|
||||||
|
* Checks if the current application instance is primary. |
||||||
|
* @return Returns true if the instance is primary, false otherwise. |
||||||
|
*/ |
||||||
|
bool SingleApplication::isPrimary() const |
||||||
|
{ |
||||||
|
Q_D( const SingleApplication ); |
||||||
|
return d->server != nullptr; |
||||||
|
} |
||||||
|
|
||||||
|
/**
|
||||||
|
* Checks if the current application instance is secondary. |
||||||
|
* @return Returns true if the instance is secondary, false otherwise. |
||||||
|
*/ |
||||||
|
bool SingleApplication::isSecondary() const |
||||||
|
{ |
||||||
|
Q_D( const SingleApplication ); |
||||||
|
return d->server == nullptr; |
||||||
|
} |
||||||
|
|
||||||
|
/**
|
||||||
|
* Allows you to identify an instance by returning unique consecutive instance |
||||||
|
* ids. It is reset when the first (primary) instance of your app starts and |
||||||
|
* only incremented afterwards. |
||||||
|
* @return Returns a unique instance id. |
||||||
|
*/ |
||||||
|
quint32 SingleApplication::instanceId() const |
||||||
|
{ |
||||||
|
Q_D( const SingleApplication ); |
||||||
|
return d->instanceNumber; |
||||||
|
} |
||||||
|
|
||||||
|
/**
|
||||||
|
* Returns the OS PID (Process Identifier) of the process running the primary |
||||||
|
* instance. Especially useful when SingleApplication is coupled with OS. |
||||||
|
* specific APIs. |
||||||
|
* @return Returns the primary instance PID. |
||||||
|
*/ |
||||||
|
qint64 SingleApplication::primaryPid() const |
||||||
|
{ |
||||||
|
Q_D( const SingleApplication ); |
||||||
|
return d->primaryPid(); |
||||||
|
} |
||||||
|
|
||||||
|
/**
|
||||||
|
* Returns the username the primary instance is running as. |
||||||
|
* @return Returns the username the primary instance is running as. |
||||||
|
*/ |
||||||
|
QString SingleApplication::primaryUser() const |
||||||
|
{ |
||||||
|
Q_D( const SingleApplication ); |
||||||
|
return d->primaryUser(); |
||||||
|
} |
||||||
|
|
||||||
|
/**
|
||||||
|
* Returns the username the current instance is running as. |
||||||
|
* @return Returns the username the current instance is running as. |
||||||
|
*/ |
||||||
|
QString SingleApplication::currentUser() const |
||||||
|
{ |
||||||
|
return SingleApplicationPrivate::getUsername(); |
||||||
|
} |
||||||
|
|
||||||
|
/**
|
||||||
|
* Sends message to the Primary Instance. |
||||||
|
* @param message The message to send. |
||||||
|
* @param timeout the maximum timeout in milliseconds for blocking functions. |
||||||
|
* @return true if the message was sent successfuly, false otherwise. |
||||||
|
*/ |
||||||
|
bool SingleApplication::sendMessage( const QByteArray &message, int timeout ) |
||||||
|
{ |
||||||
|
Q_D( SingleApplication ); |
||||||
|
|
||||||
|
// Nobody to connect to
|
||||||
|
if( isPrimary() ) return false; |
||||||
|
|
||||||
|
// Make sure the socket is connected
|
||||||
|
if( ! d->connectToPrimary( timeout, SingleApplicationPrivate::Reconnect ) ) |
||||||
|
return false; |
||||||
|
|
||||||
|
return d->writeConfirmedMessage( timeout, message ); |
||||||
|
} |
||||||
|
|
||||||
|
/**
|
||||||
|
* Cleans up the shared memory block and exits with a failure. |
||||||
|
* This function halts program execution. |
||||||
|
*/ |
||||||
|
void SingleApplication::abortSafely() |
||||||
|
{ |
||||||
|
Q_D( SingleApplication ); |
||||||
|
|
||||||
|
qCritical() << "SingleApplication: " << d->memory->error() << d->memory->errorString(); |
||||||
|
delete d; |
||||||
|
::exit( EXIT_FAILURE ); |
||||||
|
} |
||||||
|
|
||||||
|
QStringList SingleApplication::userData() const |
||||||
|
{ |
||||||
|
Q_D( const SingleApplication ); |
||||||
|
return d->appData(); |
||||||
|
} |
||||||
@ -0,0 +1,154 @@ |
|||||||
|
// The MIT License (MIT)
|
||||||
|
//
|
||||||
|
// Copyright (c) Itay Grudev 2015 - 2018
|
||||||
|
//
|
||||||
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||||
|
// of this software and associated documentation files (the "Software"), to deal
|
||||||
|
// in the Software without restriction, including without limitation the rights
|
||||||
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||||
|
// copies of the Software, and to permit persons to whom the Software is
|
||||||
|
// furnished to do so, subject to the following conditions:
|
||||||
|
//
|
||||||
|
// The above copyright notice and this permission notice shall be included in
|
||||||
|
// all copies or substantial portions of the Software.
|
||||||
|
//
|
||||||
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||||
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||||
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||||
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
|
// THE SOFTWARE.
|
||||||
|
|
||||||
|
#ifndef SINGLE_APPLICATION_H |
||||||
|
#define SINGLE_APPLICATION_H |
||||||
|
|
||||||
|
#include <QtCore/QtGlobal> |
||||||
|
#include <QtNetwork/QLocalSocket> |
||||||
|
|
||||||
|
#ifndef QAPPLICATION_CLASS |
||||||
|
#define QAPPLICATION_CLASS QCoreApplication |
||||||
|
#endif |
||||||
|
|
||||||
|
#include QT_STRINGIFY(QAPPLICATION_CLASS) |
||||||
|
|
||||||
|
class SingleApplicationPrivate; |
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief The SingleApplication class handles multiple instances of the same |
||||||
|
* Application |
||||||
|
* @see QCoreApplication |
||||||
|
*/ |
||||||
|
class SingleApplication : public QAPPLICATION_CLASS |
||||||
|
{ |
||||||
|
Q_OBJECT |
||||||
|
|
||||||
|
using app_t = QAPPLICATION_CLASS; |
||||||
|
|
||||||
|
public: |
||||||
|
/**
|
||||||
|
* @brief Mode of operation of SingleApplication. |
||||||
|
* Whether the block should be user-wide or system-wide and whether the |
||||||
|
* primary instance should be notified when a secondary instance had been |
||||||
|
* started. |
||||||
|
* @note Operating system can restrict the shared memory blocks to the same |
||||||
|
* user, in which case the User/System modes will have no effect and the |
||||||
|
* block will be user wide. |
||||||
|
* @enum |
||||||
|
*/ |
||||||
|
enum Mode { |
||||||
|
User = 1 << 0, |
||||||
|
System = 1 << 1, |
||||||
|
SecondaryNotification = 1 << 2, |
||||||
|
ExcludeAppVersion = 1 << 3, |
||||||
|
ExcludeAppPath = 1 << 4 |
||||||
|
}; |
||||||
|
Q_DECLARE_FLAGS(Options, Mode) |
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Intitializes a SingleApplication instance with argc command line |
||||||
|
* arguments in argv |
||||||
|
* @arg {int &} argc - Number of arguments in argv |
||||||
|
* @arg {const char *[]} argv - Supplied command line arguments |
||||||
|
* @arg {bool} allowSecondary - Whether to start the instance as secondary |
||||||
|
* if there is already a primary instance. |
||||||
|
* @arg {Mode} mode - Whether for the SingleApplication block to be applied |
||||||
|
* User wide or System wide. |
||||||
|
* @arg {int} timeout - Timeout to wait in milliseconds. |
||||||
|
* @note argc and argv may be changed as Qt removes arguments that it |
||||||
|
* recognizes |
||||||
|
* @note Mode::SecondaryNotification only works if set on both the primary |
||||||
|
* instance and the secondary instance. |
||||||
|
* @note The timeout is just a hint for the maximum time of blocking |
||||||
|
* operations. It does not guarantee that the SingleApplication |
||||||
|
* initialisation will be completed in given time, though is a good hint. |
||||||
|
* Usually 4*timeout would be the worst case (fail) scenario. |
||||||
|
* @see See the corresponding QAPPLICATION_CLASS constructor for reference |
||||||
|
*/ |
||||||
|
explicit SingleApplication( int &argc, char *argv[], bool allowSecondary = false, Options options = Mode::User, int timeout = 1000, const QString &userData = {} ); |
||||||
|
~SingleApplication() override; |
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Returns if the instance is the primary instance |
||||||
|
* @returns {bool} |
||||||
|
*/ |
||||||
|
bool isPrimary() const; |
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Returns if the instance is a secondary instance |
||||||
|
* @returns {bool} |
||||||
|
*/ |
||||||
|
bool isSecondary() const; |
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Returns a unique identifier for the current instance |
||||||
|
* @returns {qint32} |
||||||
|
*/ |
||||||
|
quint32 instanceId() const; |
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Returns the process ID (PID) of the primary instance |
||||||
|
* @returns {qint64} |
||||||
|
*/ |
||||||
|
qint64 primaryPid() const; |
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Returns the username of the user running the primary instance |
||||||
|
* @returns {QString} |
||||||
|
*/ |
||||||
|
QString primaryUser() const; |
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Returns the username of the current user |
||||||
|
* @returns {QString} |
||||||
|
*/ |
||||||
|
QString currentUser() const; |
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Sends a message to the primary instance. Returns true on success. |
||||||
|
* @param {int} timeout - Timeout for connecting |
||||||
|
* @returns {bool} |
||||||
|
* @note sendMessage() will return false if invoked from the primary |
||||||
|
* instance. |
||||||
|
*/ |
||||||
|
bool sendMessage( const QByteArray &message, int timeout = 100 ); |
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Get the set user data. |
||||||
|
* @returns {QStringList} |
||||||
|
*/ |
||||||
|
QStringList userData() const; |
||||||
|
|
||||||
|
Q_SIGNALS: |
||||||
|
void instanceStarted(); |
||||||
|
void receivedMessage( quint32 instanceId, QByteArray message ); |
||||||
|
|
||||||
|
private: |
||||||
|
SingleApplicationPrivate *d_ptr; |
||||||
|
Q_DECLARE_PRIVATE(SingleApplication) |
||||||
|
void abortSafely(); |
||||||
|
}; |
||||||
|
|
||||||
|
Q_DECLARE_OPERATORS_FOR_FLAGS(SingleApplication::Options) |
||||||
|
|
||||||
|
#endif // SINGLE_APPLICATION_H
|
||||||
@ -0,0 +1,20 @@ |
|||||||
|
QT += core network |
||||||
|
CONFIG += c++11 |
||||||
|
|
||||||
|
HEADERS += $$PWD/SingleApplication \ |
||||||
|
$$PWD/singleapplication.h \ |
||||||
|
$$PWD/singleapplication_p.h |
||||||
|
SOURCES += $$PWD/singleapplication.cpp \ |
||||||
|
$$PWD/singleapplication_p.cpp |
||||||
|
|
||||||
|
INCLUDEPATH += $$PWD |
||||||
|
|
||||||
|
win32 { |
||||||
|
msvc:LIBS += Advapi32.lib |
||||||
|
gcc:LIBS += -ladvapi32 |
||||||
|
} |
||||||
|
|
||||||
|
DISTFILES += \ |
||||||
|
$$PWD/README.md \ |
||||||
|
$$PWD/CHANGELOG.md \ |
||||||
|
$$PWD/Windows.md |
||||||
@ -0,0 +1,531 @@ |
|||||||
|
// The MIT License (MIT)
|
||||||
|
//
|
||||||
|
// Copyright (c) Itay Grudev 2015 - 2020
|
||||||
|
//
|
||||||
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||||
|
// of this software and associated documentation files (the "Software"), to deal
|
||||||
|
// in the Software without restriction, including without limitation the rights
|
||||||
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||||
|
// copies of the Software, and to permit persons to whom the Software is
|
||||||
|
// furnished to do so, subject to the following conditions:
|
||||||
|
//
|
||||||
|
// The above copyright notice and this permission notice shall be included in
|
||||||
|
// all copies or substantial portions of the Software.
|
||||||
|
//
|
||||||
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||||
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||||
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||||
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
|
// THE SOFTWARE.
|
||||||
|
|
||||||
|
//
|
||||||
|
// W A R N I N G !!!
|
||||||
|
// -----------------
|
||||||
|
//
|
||||||
|
// This file is not part of the SingleApplication API. It is used purely as an
|
||||||
|
// implementation detail. This header file may change from version to
|
||||||
|
// version without notice, or may even be removed.
|
||||||
|
//
|
||||||
|
|
||||||
|
#include <cstdlib> |
||||||
|
#include <cstddef> |
||||||
|
|
||||||
|
#include <QtCore/QDir> |
||||||
|
#include <QtCore/QThread> |
||||||
|
#include <QtCore/QByteArray> |
||||||
|
#include <QtCore/QDataStream> |
||||||
|
#include <QtCore/QElapsedTimer> |
||||||
|
#include <QtCore/QCryptographicHash> |
||||||
|
#include <QtNetwork/QLocalServer> |
||||||
|
#include <QtNetwork/QLocalSocket> |
||||||
|
|
||||||
|
#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0) |
||||||
|
#include <QtCore/QRandomGenerator> |
||||||
|
#else |
||||||
|
#include <QtCore/QDateTime> |
||||||
|
#endif |
||||||
|
|
||||||
|
#include "singleapplication.h" |
||||||
|
#include "singleapplication_p.h" |
||||||
|
|
||||||
|
#ifdef Q_OS_UNIX |
||||||
|
#include <unistd.h> |
||||||
|
#include <sys/types.h> |
||||||
|
#include <pwd.h> |
||||||
|
#endif |
||||||
|
|
||||||
|
#ifdef Q_OS_WIN |
||||||
|
#ifndef NOMINMAX |
||||||
|
#define NOMINMAX 1 |
||||||
|
#endif |
||||||
|
#include <windows.h> |
||||||
|
#include <lmcons.h> |
||||||
|
#endif |
||||||
|
|
||||||
|
SingleApplicationPrivate::SingleApplicationPrivate( SingleApplication *q_ptr ) |
||||||
|
: q_ptr( q_ptr ) |
||||||
|
{ |
||||||
|
server = nullptr; |
||||||
|
socket = nullptr; |
||||||
|
memory = nullptr; |
||||||
|
instanceNumber = 0; |
||||||
|
} |
||||||
|
|
||||||
|
SingleApplicationPrivate::~SingleApplicationPrivate() |
||||||
|
{ |
||||||
|
if( socket != nullptr ){ |
||||||
|
socket->close(); |
||||||
|
delete socket; |
||||||
|
} |
||||||
|
|
||||||
|
if( memory != nullptr ){ |
||||||
|
memory->lock(); |
||||||
|
auto *inst = static_cast<InstancesInfo*>(memory->data()); |
||||||
|
if( server != nullptr ){ |
||||||
|
server->close(); |
||||||
|
delete server; |
||||||
|
inst->primary = false; |
||||||
|
inst->primaryPid = -1; |
||||||
|
inst->primaryUser[0] = '\0'; |
||||||
|
inst->checksum = blockChecksum(); |
||||||
|
} |
||||||
|
memory->unlock(); |
||||||
|
|
||||||
|
delete memory; |
||||||
|
} |
||||||
|
} |
||||||
|
|
||||||
|
QString SingleApplicationPrivate::getUsername() |
||||||
|
{ |
||||||
|
#ifdef Q_OS_WIN |
||||||
|
wchar_t username[UNLEN + 1]; |
||||||
|
// Specifies size of the buffer on input
|
||||||
|
DWORD usernameLength = UNLEN + 1; |
||||||
|
if( GetUserNameW( username, &usernameLength ) ) |
||||||
|
return QString::fromWCharArray( username ); |
||||||
|
#if QT_VERSION < QT_VERSION_CHECK(5, 10, 0) |
||||||
|
return QString::fromLocal8Bit( qgetenv( "USERNAME" ) ); |
||||||
|
#else |
||||||
|
return qEnvironmentVariable( "USERNAME" ); |
||||||
|
#endif |
||||||
|
#endif |
||||||
|
#ifdef Q_OS_UNIX |
||||||
|
QString username; |
||||||
|
uid_t uid = geteuid(); |
||||||
|
struct passwd *pw = getpwuid( uid ); |
||||||
|
if( pw ) |
||||||
|
username = QString::fromLocal8Bit( pw->pw_name ); |
||||||
|
if ( username.isEmpty() ){ |
||||||
|
#if QT_VERSION < QT_VERSION_CHECK(5, 10, 0) |
||||||
|
username = QString::fromLocal8Bit( qgetenv( "USER" ) ); |
||||||
|
#else |
||||||
|
username = qEnvironmentVariable( "USER" ); |
||||||
|
#endif |
||||||
|
} |
||||||
|
return username; |
||||||
|
#endif |
||||||
|
} |
||||||
|
|
||||||
|
void SingleApplicationPrivate::genBlockServerName() |
||||||
|
{ |
||||||
|
QCryptographicHash appData( QCryptographicHash::Sha256 ); |
||||||
|
appData.addData( "SingleApplication", 17 ); |
||||||
|
appData.addData( SingleApplication::app_t::applicationName().toUtf8() ); |
||||||
|
appData.addData( SingleApplication::app_t::organizationName().toUtf8() ); |
||||||
|
appData.addData( SingleApplication::app_t::organizationDomain().toUtf8() ); |
||||||
|
|
||||||
|
if ( ! appDataList.isEmpty() ) |
||||||
|
appData.addData( appDataList.join( "" ).toUtf8() ); |
||||||
|
|
||||||
|
if( ! (options & SingleApplication::Mode::ExcludeAppVersion) ){ |
||||||
|
appData.addData( SingleApplication::app_t::applicationVersion().toUtf8() ); |
||||||
|
} |
||||||
|
|
||||||
|
if( ! (options & SingleApplication::Mode::ExcludeAppPath) ){ |
||||||
|
#ifdef Q_OS_WIN |
||||||
|
appData.addData( SingleApplication::app_t::applicationFilePath().toLower().toUtf8() ); |
||||||
|
#else |
||||||
|
appData.addData( SingleApplication::app_t::applicationFilePath().toUtf8() ); |
||||||
|
#endif |
||||||
|
} |
||||||
|
|
||||||
|
// User level block requires a user specific data in the hash
|
||||||
|
if( options & SingleApplication::Mode::User ){ |
||||||
|
appData.addData( getUsername().toUtf8() ); |
||||||
|
} |
||||||
|
|
||||||
|
// Replace the backslash in RFC 2045 Base64 [a-zA-Z0-9+/=] to comply with
|
||||||
|
// server naming requirements.
|
||||||
|
blockServerName = appData.result().toBase64().replace("/", "_"); |
||||||
|
} |
||||||
|
|
||||||
|
void SingleApplicationPrivate::initializeMemoryBlock() const |
||||||
|
{ |
||||||
|
auto *inst = static_cast<InstancesInfo*>( memory->data() ); |
||||||
|
inst->primary = false; |
||||||
|
inst->secondary = 0; |
||||||
|
inst->primaryPid = -1; |
||||||
|
inst->primaryUser[0] = '\0'; |
||||||
|
inst->checksum = blockChecksum(); |
||||||
|
} |
||||||
|
|
||||||
|
void SingleApplicationPrivate::startPrimary() |
||||||
|
{ |
||||||
|
// Reset the number of connections
|
||||||
|
auto *inst = static_cast <InstancesInfo*>( memory->data() ); |
||||||
|
|
||||||
|
inst->primary = true; |
||||||
|
inst->primaryPid = QCoreApplication::applicationPid(); |
||||||
|
qstrncpy( inst->primaryUser, getUsername().toUtf8().data(), sizeof(inst->primaryUser) ); |
||||||
|
inst->checksum = blockChecksum(); |
||||||
|
instanceNumber = 0; |
||||||
|
// Successful creation means that no main process exists
|
||||||
|
// So we start a QLocalServer to listen for connections
|
||||||
|
QLocalServer::removeServer( blockServerName ); |
||||||
|
server = new QLocalServer(); |
||||||
|
|
||||||
|
// Restrict access to the socket according to the
|
||||||
|
// SingleApplication::Mode::User flag on User level or no restrictions
|
||||||
|
if( options & SingleApplication::Mode::User ){ |
||||||
|
server->setSocketOptions( QLocalServer::UserAccessOption ); |
||||||
|
} else { |
||||||
|
server->setSocketOptions( QLocalServer::WorldAccessOption ); |
||||||
|
} |
||||||
|
|
||||||
|
server->listen( blockServerName ); |
||||||
|
QObject::connect( |
||||||
|
server, |
||||||
|
&QLocalServer::newConnection, |
||||||
|
this, |
||||||
|
&SingleApplicationPrivate::slotConnectionEstablished |
||||||
|
); |
||||||
|
} |
||||||
|
|
||||||
|
void SingleApplicationPrivate::startSecondary() |
||||||
|
{ |
||||||
|
auto *inst = static_cast <InstancesInfo*>( memory->data() ); |
||||||
|
|
||||||
|
inst->secondary += 1; |
||||||
|
inst->checksum = blockChecksum(); |
||||||
|
instanceNumber = inst->secondary; |
||||||
|
} |
||||||
|
|
||||||
|
bool SingleApplicationPrivate::connectToPrimary( int msecs, ConnectionType connectionType ) |
||||||
|
{ |
||||||
|
QElapsedTimer time; |
||||||
|
time.start(); |
||||||
|
|
||||||
|
// Connect to the Local Server of the Primary Instance if not already
|
||||||
|
// connected.
|
||||||
|
if( socket == nullptr ){ |
||||||
|
socket = new QLocalSocket(); |
||||||
|
} |
||||||
|
|
||||||
|
if( socket->state() == QLocalSocket::ConnectedState ) return true; |
||||||
|
|
||||||
|
if( socket->state() != QLocalSocket::ConnectedState ){ |
||||||
|
|
||||||
|
while( true ){ |
||||||
|
randomSleep(); |
||||||
|
|
||||||
|
if( socket->state() != QLocalSocket::ConnectingState ) |
||||||
|
socket->connectToServer( blockServerName ); |
||||||
|
|
||||||
|
if( socket->state() == QLocalSocket::ConnectingState ){ |
||||||
|
socket->waitForConnected( static_cast<int>(msecs - time.elapsed()) ); |
||||||
|
} |
||||||
|
|
||||||
|
// If connected break out of the loop
|
||||||
|
if( socket->state() == QLocalSocket::ConnectedState ) break; |
||||||
|
|
||||||
|
// If elapsed time since start is longer than the method timeout return
|
||||||
|
if( time.elapsed() >= msecs ) return false; |
||||||
|
} |
||||||
|
} |
||||||
|
|
||||||
|
// Initialisation message according to the SingleApplication protocol
|
||||||
|
QByteArray initMsg; |
||||||
|
QDataStream writeStream(&initMsg, QIODevice::WriteOnly); |
||||||
|
|
||||||
|
#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0)) |
||||||
|
writeStream.setVersion(QDataStream::Qt_5_6); |
||||||
|
#endif |
||||||
|
|
||||||
|
writeStream << blockServerName.toLatin1(); |
||||||
|
writeStream << static_cast<quint8>(connectionType); |
||||||
|
writeStream << instanceNumber; |
||||||
|
#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0) |
||||||
|
quint16 checksum = qChecksum(QByteArray(initMsg, static_cast<quint32>(initMsg.length()))); |
||||||
|
#else |
||||||
|
quint16 checksum = qChecksum(initMsg.constData(), static_cast<quint32>(initMsg.length())); |
||||||
|
#endif |
||||||
|
writeStream << checksum; |
||||||
|
|
||||||
|
return writeConfirmedMessage( static_cast<int>(msecs - time.elapsed()), initMsg ); |
||||||
|
} |
||||||
|
|
||||||
|
void SingleApplicationPrivate::writeAck( QLocalSocket *sock ) { |
||||||
|
sock->putChar('\n'); |
||||||
|
} |
||||||
|
|
||||||
|
bool SingleApplicationPrivate::writeConfirmedMessage (int msecs, const QByteArray &msg) |
||||||
|
{ |
||||||
|
QElapsedTimer time; |
||||||
|
time.start(); |
||||||
|
|
||||||
|
// Frame 1: The header indicates the message length that follows
|
||||||
|
QByteArray header; |
||||||
|
QDataStream headerStream(&header, QIODevice::WriteOnly); |
||||||
|
|
||||||
|
#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0)) |
||||||
|
headerStream.setVersion(QDataStream::Qt_5_6); |
||||||
|
#endif |
||||||
|
headerStream << static_cast <quint64>( msg.length() ); |
||||||
|
|
||||||
|
if( ! writeConfirmedFrame( static_cast<int>(msecs - time.elapsed()), header )) |
||||||
|
return false; |
||||||
|
|
||||||
|
// Frame 2: The message
|
||||||
|
return writeConfirmedFrame( static_cast<int>(msecs - time.elapsed()), msg ); |
||||||
|
} |
||||||
|
|
||||||
|
bool SingleApplicationPrivate::writeConfirmedFrame( int msecs, const QByteArray &msg ) |
||||||
|
{ |
||||||
|
socket->write( msg ); |
||||||
|
socket->flush(); |
||||||
|
|
||||||
|
bool result = socket->waitForReadyRead( msecs ); // await ack byte
|
||||||
|
if (result) { |
||||||
|
socket->read( 1 ); |
||||||
|
return true; |
||||||
|
} |
||||||
|
|
||||||
|
return false; |
||||||
|
} |
||||||
|
|
||||||
|
quint16 SingleApplicationPrivate::blockChecksum() const |
||||||
|
{ |
||||||
|
#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0) |
||||||
|
quint16 checksum = qChecksum(QByteArray(static_cast<const char*>(memory->constData()), offsetof(InstancesInfo, checksum))); |
||||||
|
#else |
||||||
|
quint16 checksum = qChecksum(static_cast<const char*>(memory->constData()), offsetof(InstancesInfo, checksum)); |
||||||
|
#endif |
||||||
|
return checksum; |
||||||
|
} |
||||||
|
|
||||||
|
qint64 SingleApplicationPrivate::primaryPid() const |
||||||
|
{ |
||||||
|
qint64 pid; |
||||||
|
|
||||||
|
memory->lock(); |
||||||
|
auto *inst = static_cast<InstancesInfo*>( memory->data() ); |
||||||
|
pid = inst->primaryPid; |
||||||
|
memory->unlock(); |
||||||
|
|
||||||
|
return pid; |
||||||
|
} |
||||||
|
|
||||||
|
QString SingleApplicationPrivate::primaryUser() const |
||||||
|
{ |
||||||
|
QByteArray username; |
||||||
|
|
||||||
|
memory->lock(); |
||||||
|
auto *inst = static_cast<InstancesInfo*>( memory->data() ); |
||||||
|
username = inst->primaryUser; |
||||||
|
memory->unlock(); |
||||||
|
|
||||||
|
return QString::fromUtf8( username ); |
||||||
|
} |
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Executed when a connection has been made to the LocalServer |
||||||
|
*/ |
||||||
|
void SingleApplicationPrivate::slotConnectionEstablished() |
||||||
|
{ |
||||||
|
QLocalSocket *nextConnSocket = server->nextPendingConnection(); |
||||||
|
connectionMap.insert(nextConnSocket, ConnectionInfo()); |
||||||
|
|
||||||
|
QObject::connect(nextConnSocket, &QLocalSocket::aboutToClose, this, |
||||||
|
[nextConnSocket, this](){ |
||||||
|
auto &info = connectionMap[nextConnSocket]; |
||||||
|
this->slotClientConnectionClosed( nextConnSocket, info.instanceId ); |
||||||
|
} |
||||||
|
); |
||||||
|
|
||||||
|
QObject::connect(nextConnSocket, &QLocalSocket::disconnected, nextConnSocket, &QLocalSocket::deleteLater); |
||||||
|
|
||||||
|
QObject::connect(nextConnSocket, &QLocalSocket::destroyed, this, |
||||||
|
[nextConnSocket, this](){ |
||||||
|
connectionMap.remove(nextConnSocket); |
||||||
|
} |
||||||
|
); |
||||||
|
|
||||||
|
QObject::connect(nextConnSocket, &QLocalSocket::readyRead, this, |
||||||
|
[nextConnSocket, this](){ |
||||||
|
auto &info = connectionMap[nextConnSocket]; |
||||||
|
switch(info.stage){ |
||||||
|
case StageInitHeader: |
||||||
|
readMessageHeader( nextConnSocket, StageInitBody ); |
||||||
|
break; |
||||||
|
case StageInitBody: |
||||||
|
readInitMessageBody(nextConnSocket); |
||||||
|
break; |
||||||
|
case StageConnectedHeader: |
||||||
|
readMessageHeader( nextConnSocket, StageConnectedBody ); |
||||||
|
break; |
||||||
|
case StageConnectedBody: |
||||||
|
this->slotDataAvailable( nextConnSocket, info.instanceId ); |
||||||
|
break; |
||||||
|
default: |
||||||
|
break; |
||||||
|
}; |
||||||
|
} |
||||||
|
); |
||||||
|
} |
||||||
|
|
||||||
|
void SingleApplicationPrivate::readMessageHeader( QLocalSocket *sock, SingleApplicationPrivate::ConnectionStage nextStage ) |
||||||
|
{ |
||||||
|
if (!connectionMap.contains( sock )){ |
||||||
|
return; |
||||||
|
} |
||||||
|
|
||||||
|
if( sock->bytesAvailable() < ( qint64 )sizeof( quint64 ) ){ |
||||||
|
return; |
||||||
|
} |
||||||
|
|
||||||
|
QDataStream headerStream( sock ); |
||||||
|
|
||||||
|
#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0)) |
||||||
|
headerStream.setVersion( QDataStream::Qt_5_6 ); |
||||||
|
#endif |
||||||
|
|
||||||
|
// Read the header to know the message length
|
||||||
|
quint64 msgLen = 0; |
||||||
|
headerStream >> msgLen; |
||||||
|
ConnectionInfo &info = connectionMap[sock]; |
||||||
|
info.stage = nextStage; |
||||||
|
info.msgLen = msgLen; |
||||||
|
|
||||||
|
writeAck( sock ); |
||||||
|
} |
||||||
|
|
||||||
|
bool SingleApplicationPrivate::isFrameComplete( QLocalSocket *sock ) |
||||||
|
{ |
||||||
|
if (!connectionMap.contains( sock )){ |
||||||
|
return false; |
||||||
|
} |
||||||
|
|
||||||
|
ConnectionInfo &info = connectionMap[sock]; |
||||||
|
if( sock->bytesAvailable() < ( qint64 )info.msgLen ){ |
||||||
|
return false; |
||||||
|
} |
||||||
|
|
||||||
|
return true; |
||||||
|
} |
||||||
|
|
||||||
|
void SingleApplicationPrivate::readInitMessageBody( QLocalSocket *sock ) |
||||||
|
{ |
||||||
|
Q_Q(SingleApplication); |
||||||
|
|
||||||
|
if( !isFrameComplete( sock ) ) |
||||||
|
return; |
||||||
|
|
||||||
|
// Read the message body
|
||||||
|
QByteArray msgBytes = sock->readAll(); |
||||||
|
QDataStream readStream(msgBytes); |
||||||
|
|
||||||
|
#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0)) |
||||||
|
readStream.setVersion( QDataStream::Qt_5_6 ); |
||||||
|
#endif |
||||||
|
|
||||||
|
// server name
|
||||||
|
QByteArray latin1Name; |
||||||
|
readStream >> latin1Name; |
||||||
|
|
||||||
|
// connection type
|
||||||
|
ConnectionType connectionType = InvalidConnection; |
||||||
|
quint8 connTypeVal = InvalidConnection; |
||||||
|
readStream >> connTypeVal; |
||||||
|
connectionType = static_cast <ConnectionType>( connTypeVal ); |
||||||
|
|
||||||
|
// instance id
|
||||||
|
quint32 instanceId = 0; |
||||||
|
readStream >> instanceId; |
||||||
|
|
||||||
|
// checksum
|
||||||
|
quint16 msgChecksum = 0; |
||||||
|
readStream >> msgChecksum; |
||||||
|
|
||||||
|
#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0) |
||||||
|
const quint16 actualChecksum = qChecksum(QByteArray(msgBytes, static_cast<quint32>(msgBytes.length() - sizeof(quint16)))); |
||||||
|
#else |
||||||
|
const quint16 actualChecksum = qChecksum(msgBytes.constData(), static_cast<quint32>(msgBytes.length() - sizeof(quint16))); |
||||||
|
#endif |
||||||
|
|
||||||
|
bool isValid = readStream.status() == QDataStream::Ok && |
||||||
|
QLatin1String(latin1Name) == blockServerName && |
||||||
|
msgChecksum == actualChecksum; |
||||||
|
|
||||||
|
if( !isValid ){ |
||||||
|
sock->close(); |
||||||
|
return; |
||||||
|
} |
||||||
|
|
||||||
|
ConnectionInfo &info = connectionMap[sock]; |
||||||
|
info.instanceId = instanceId; |
||||||
|
info.stage = StageConnectedHeader; |
||||||
|
|
||||||
|
if( connectionType == NewInstance || |
||||||
|
( connectionType == SecondaryInstance && |
||||||
|
options & SingleApplication::Mode::SecondaryNotification ) ) |
||||||
|
{ |
||||||
|
Q_EMIT q->instanceStarted(); |
||||||
|
} |
||||||
|
|
||||||
|
writeAck( sock ); |
||||||
|
} |
||||||
|
|
||||||
|
void SingleApplicationPrivate::slotDataAvailable( QLocalSocket *dataSocket, quint32 instanceId ) |
||||||
|
{ |
||||||
|
Q_Q(SingleApplication); |
||||||
|
|
||||||
|
if ( !isFrameComplete( dataSocket ) ) |
||||||
|
return; |
||||||
|
|
||||||
|
auto message = dataSocket->readAll(); |
||||||
|
|
||||||
|
writeAck( dataSocket ); |
||||||
|
|
||||||
|
ConnectionInfo &info = connectionMap[dataSocket]; |
||||||
|
info.stage = StageConnectedHeader; |
||||||
|
|
||||||
|
Q_EMIT q->receivedMessage(instanceId, message); |
||||||
|
} |
||||||
|
|
||||||
|
void SingleApplicationPrivate::slotClientConnectionClosed( QLocalSocket *closedSocket, quint32 instanceId ) |
||||||
|
{ |
||||||
|
if( closedSocket->bytesAvailable() > 0 ) |
||||||
|
slotDataAvailable( closedSocket, instanceId ); |
||||||
|
} |
||||||
|
|
||||||
|
void SingleApplicationPrivate::randomSleep() |
||||||
|
{ |
||||||
|
#if QT_VERSION >= QT_VERSION_CHECK( 5, 10, 0 ) |
||||||
|
QThread::msleep( QRandomGenerator::global()->bounded( 8u, 18u )); |
||||||
|
#else |
||||||
|
qsrand( QDateTime::currentMSecsSinceEpoch() % std::numeric_limits<uint>::max() ); |
||||||
|
QThread::msleep( qrand() % 11 + 8); |
||||||
|
#endif |
||||||
|
} |
||||||
|
|
||||||
|
void SingleApplicationPrivate::addAppData(const QString &data) |
||||||
|
{ |
||||||
|
appDataList.push_back(data); |
||||||
|
} |
||||||
|
|
||||||
|
QStringList SingleApplicationPrivate::appData() const |
||||||
|
{ |
||||||
|
return appDataList; |
||||||
|
} |
||||||
@ -0,0 +1,109 @@ |
|||||||
|
// The MIT License (MIT)
|
||||||
|
//
|
||||||
|
// Copyright (c) Itay Grudev 2015 - 2020
|
||||||
|
//
|
||||||
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||||
|
// of this software and associated documentation files (the "Software"), to deal
|
||||||
|
// in the Software without restriction, including without limitation the rights
|
||||||
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||||
|
// copies of the Software, and to permit persons to whom the Software is
|
||||||
|
// furnished to do so, subject to the following conditions:
|
||||||
|
//
|
||||||
|
// The above copyright notice and this permission notice shall be included in
|
||||||
|
// all copies or substantial portions of the Software.
|
||||||
|
//
|
||||||
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||||
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||||
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||||
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
|
// THE SOFTWARE.
|
||||||
|
|
||||||
|
//
|
||||||
|
// W A R N I N G !!!
|
||||||
|
// -----------------
|
||||||
|
//
|
||||||
|
// This file is not part of the SingleApplication API. It is used purely as an
|
||||||
|
// implementation detail. This header file may change from version to
|
||||||
|
// version without notice, or may even be removed.
|
||||||
|
//
|
||||||
|
|
||||||
|
#ifndef SINGLEAPPLICATION_P_H |
||||||
|
#define SINGLEAPPLICATION_P_H |
||||||
|
|
||||||
|
#include <QtCore/QSharedMemory> |
||||||
|
#include <QtNetwork/QLocalServer> |
||||||
|
#include <QtNetwork/QLocalSocket> |
||||||
|
#include "singleapplication.h" |
||||||
|
|
||||||
|
struct InstancesInfo { |
||||||
|
bool primary; |
||||||
|
quint32 secondary; |
||||||
|
qint64 primaryPid; |
||||||
|
char primaryUser[128]; |
||||||
|
quint16 checksum; // Must be the last field
|
||||||
|
}; |
||||||
|
|
||||||
|
struct ConnectionInfo { |
||||||
|
qint64 msgLen = 0; |
||||||
|
quint32 instanceId = 0; |
||||||
|
quint8 stage = 0; |
||||||
|
}; |
||||||
|
|
||||||
|
class SingleApplicationPrivate : public QObject { |
||||||
|
Q_OBJECT |
||||||
|
public: |
||||||
|
enum ConnectionType : quint8 { |
||||||
|
InvalidConnection = 0, |
||||||
|
NewInstance = 1, |
||||||
|
SecondaryInstance = 2, |
||||||
|
Reconnect = 3 |
||||||
|
}; |
||||||
|
enum ConnectionStage : quint8 { |
||||||
|
StageInitHeader = 0, |
||||||
|
StageInitBody = 1, |
||||||
|
StageConnectedHeader = 2, |
||||||
|
StageConnectedBody = 3, |
||||||
|
}; |
||||||
|
Q_DECLARE_PUBLIC(SingleApplication) |
||||||
|
|
||||||
|
SingleApplicationPrivate( SingleApplication *q_ptr ); |
||||||
|
~SingleApplicationPrivate() override; |
||||||
|
|
||||||
|
static QString getUsername(); |
||||||
|
void genBlockServerName(); |
||||||
|
void initializeMemoryBlock() const; |
||||||
|
void startPrimary(); |
||||||
|
void startSecondary(); |
||||||
|
bool connectToPrimary( int msecs, ConnectionType connectionType ); |
||||||
|
quint16 blockChecksum() const; |
||||||
|
qint64 primaryPid() const; |
||||||
|
QString primaryUser() const; |
||||||
|
bool isFrameComplete(QLocalSocket *sock); |
||||||
|
void readMessageHeader(QLocalSocket *socket, ConnectionStage nextStage); |
||||||
|
void readInitMessageBody(QLocalSocket *socket); |
||||||
|
void writeAck(QLocalSocket *sock); |
||||||
|
bool writeConfirmedFrame(int msecs, const QByteArray &msg); |
||||||
|
bool writeConfirmedMessage(int msecs, const QByteArray &msg); |
||||||
|
static void randomSleep(); |
||||||
|
void addAppData(const QString &data); |
||||||
|
QStringList appData() const; |
||||||
|
|
||||||
|
SingleApplication *q_ptr; |
||||||
|
QSharedMemory *memory; |
||||||
|
QLocalSocket *socket; |
||||||
|
QLocalServer *server; |
||||||
|
quint32 instanceNumber; |
||||||
|
QString blockServerName; |
||||||
|
SingleApplication::Options options; |
||||||
|
QMap<QLocalSocket*, ConnectionInfo> connectionMap; |
||||||
|
QStringList appDataList; |
||||||
|
|
||||||
|
public Q_SLOTS: |
||||||
|
void slotConnectionEstablished(); |
||||||
|
void slotDataAvailable( QLocalSocket*, quint32 ); |
||||||
|
void slotClientConnectionClosed( QLocalSocket*, quint32 ); |
||||||
|
}; |
||||||
|
|
||||||
|
#endif // SINGLEAPPLICATION_P_H
|
||||||
@ -0,0 +1 @@ |
|||||||
|
Subproject commit 853e3b80156f52a7e54fb8d4da86ad39c9d39f25 |
||||||
@ -0,0 +1 @@ |
|||||||
|
Subproject commit 67dec7153aceb1540fab77407fbbe3a59536bec1 |
||||||
@ -0,0 +1,12 @@ |
|||||||
|
[wrap-file] |
||||||
|
directory = spdlog-1.9.2 |
||||||
|
source_url = https://github.com/gabime/spdlog/archive/v1.9.2.tar.gz |
||||||
|
source_filename = v1.9.2.tar.gz |
||||||
|
source_hash = 6fff9215f5cb81760be4cc16d033526d1080427d236e86d70bb02994f85e3d38 |
||||||
|
patch_filename = spdlog_1.9.2-1_patch.zip |
||||||
|
patch_url = https://wrapdb.mesonbuild.com/v2/spdlog_1.9.2-1/get_patch |
||||||
|
patch_hash = 77182bd65366818ef61fd5bd1745fedd4a6d4aeefc03f34a1ddb05ef9c944c95 |
||||||
|
|
||||||
|
[provide] |
||||||
|
spdlog = spdlog_dep |
||||||
|
|
||||||
Loading…
Reference in new issue