mirror of
https://github.com/fergalmoran/flameshot.git
synced 2025-12-22 09:51:06 +00:00
Move Single Application to FetchContent
This commit is contained in:
Jeremy Borgman
@@ -43,6 +43,8 @@ FetchContent_Declare(
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)
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FetchContent_MakeAvailable(qtColorWidgets)
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# This can be read from ${PROJECT_NAME} after project() is called
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if (APPLE)
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set(CMAKE_OSX_DEPLOYMENT_TARGET "10.15" CACHE STRING "Minimum OS X deployment version")
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@@ -111,7 +113,12 @@ if(USE_EXTERNAL_SINGLEAPPLICATION)
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find_library(QTSINGLEAPPLICATION_LIBRARY NAMES ${qtsingleapplication_libs})
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message(STATUS "Using external SingleApplication library")
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else()
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add_subdirectory(external/singleapplication)
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FetchContent_Declare(
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singleApplication
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GIT_REPOSITORY https://github.com/itay-grudev/SingleApplication.git
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GIT_TAG v3.1.5
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)
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FetchContent_MakeAvailable(SingleApplication)
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set(QTSINGLEAPPLICATION_LIBRARY SingleApplication::SingleApplication)
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endif()
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285
external/singleapplication/CHANGELOG.md
vendored
285
external/singleapplication/CHANGELOG.md
vendored
@@ -1,285 +0,0 @@
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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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__3.1.5__
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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 emmited 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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_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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_Hennadii Chernyshchyk_
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__3.1.3__
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---------
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* Improved `CMakeLists.txt`
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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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_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.
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_Leander Schulten_
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__3.1.0a__
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----------
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* Added primaryUser() method that returns the user the primary instance is running as.
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__3.0.19__
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----------
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* Fixed code warning for depricated functions in Qt 5.10 related to `QTime` and `qrand()`.
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_Hennadii Chernyshchyk_
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_Anton Filimonov_
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_Jonas Kvinge_
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__3.0.18__
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----------
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* Fallback to standard QApplication class on iOS and Android systems where
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the library is not supported.
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* Added Build CI tests to verify the library builds successfully on Linux, Windows and MacOS across multiple Qt versions.
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_Anton Filimonov_
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__3.0.17__
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----------
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* Fixed compilation warning/error caused by `geteuid()` on unix based systems.
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_Iakov Kirilenko_
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* Added CMake support
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_Hennadii Chernyshchyk_
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__3.0.16__
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----------
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* Use geteuid and getpwuid to get username on Unix, fallback to environment variable.
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_Jonas Kvinge_
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__3.0.15__
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----------
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* Bug Fix: sendMessage() might return false even though data was actually written.
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_Jonas Kvinge_
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__3.0.14__
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----------
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* Fixed uninitialised variables in the `SingleApplicationPrivate` constructor.
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__3.0.13a__
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----------
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* Process socket events asynchronously
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* Fix undefined variable error on Windows
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_Francis Giraldeau_
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__3.0.12a__
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----------
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* Removed signal handling.
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__3.0.11a__
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----------
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* Fixed bug where the message sent by the second process was not received
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correctly when the message is sent immediately following a connection.
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_Francis Giraldeau_
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* Refactored code and implemented shared memory block consistency checks
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via `qChecksum()` (CRC-16).
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* Explicit `qWarning` and `qCritical` when the library is unable to initialise
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correctly.
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__3.0.10__
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----------
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* Removed C style casts and eliminated all clang warnings. Fixed `instanceId`
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reading from only one byte in the message deserialization. Cleaned up
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serialization code using `QDataStream`. Changed connection type to use
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`quint8 enum` rather than `char`.
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* Renamed `SingleAppConnectionType` to `ConnectionType`. Added initialization
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values to all `ConnectionType` enum cases.
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_Jedidiah Buck McCready_
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__3.0.9__
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---------
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* Added SingleApplicationPrivate::primaryPid() as a solution to allow
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bringing the primary window of an application to the foreground on
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Windows.
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_Eelco van Dam from Peacs BV_
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__3.0.8__
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---------
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* Bug fix - changed QApplication::instance() to QCoreApplication::instance()
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_Evgeniy Bazhenov_
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__3.0.7a__
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----------
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* Fixed compilation error with Mingw32 in MXE thanks to Vitaly Tonkacheyev.
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* Removed QMutex used for thread safe behaviour. The implementation now uses
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QCoreApplication::instance() to get an instance to SingleApplication for
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memory deallocation.
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__3.0.6a__
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----------
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* Reverted GetUserName API usage on Windows. Fixed bug with missing library.
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* Fixed bug in the Calculator example, preventing it's window to be raised
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on Windows.
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Special thanks to Charles Gunawan.
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__3.0.5a__
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----------
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* Fixed a memory leak in the SingleApplicationPrivate destructor.
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_Sergei Moiseev_
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__3.0.4a__
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----------
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* Fixed shadow and uninitialised variable warnings.
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_Paul Walmsley_
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__3.0.3a__
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----------
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* Removed Microsoft Windows specific code for getting username due to
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multiple problems and compiler differences on Windows platforms. On
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Windows the shared memory block in User mode now includes the user's
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home path (which contains the user's username).
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* Explicitly getting absolute path of the user's home directory as on Unix
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a relative path (`~`) may be returned.
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__3.0.2a__
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----------
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* Fixed bug on Windows when username containing wide characters causes the
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library to crash.
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_Le Liu_
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__3.0.1a__
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----------
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* Allows the application path and version to be excluded from the server name
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hash. The following flags were added for this purpose:
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* `SingleApplication::Mode::ExcludeAppVersion`
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* `SingleApplication::Mode::ExcludeAppPath`
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* Allow a non elevated process to connect to a local server created by an
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elevated process run by the same user on Windows
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* Fixes a problem with upper case letters in paths on Windows
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_Le Liu_
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__v3.0a__
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---------
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* Deprecated secondary instances count.
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* Added a sendMessage() method to send a message to the primary instance.
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* Added a receivedMessage() signal, emitted when a message is received from a
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secondary instance.
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* The SingleApplication constructor's third parameter is now a bool
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specifying if the current instance should be allowed to run as a secondary
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instance if there is already a primary instance.
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* The SingleApplication constructor accept a fourth parameter specifying if
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the SingleApplication block should be User-wide or System-wide.
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* SingleApplication no longer relies on `applicationName` and
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`organizationName` to be set. It instead concatenates all of the following
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data and computes a `SHA256` hash which is used as the key of the
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`QSharedMemory` block and the `QLocalServer`. Since at least
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`applicationFilePath` is always present there is no need to explicitly set
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any of the following prior to initialising `SingleApplication`.
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* `QCoreApplication::applicationName`
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* `QCoreApplication::applicationVersion`
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* `QCoreApplication::applicationFilePath`
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* `QCoreApplication::organizationName`
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* `QCoreApplication::organizationDomain`
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* User name or home directory path if in User mode
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* The primary instance is no longer notified when a secondary instance had
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been started by default. A `Mode` flag for this feature exists.
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* Added `instanceNumber()` which represents a unique identifier for each
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secondary instance started. When called from the primary instance will
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return `0`.
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__v2.4__
|
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--------
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* Stability improvements
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* Support for secondary instances.
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* The library now recovers safely after the primary process has crashed
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and the shared memory had not been deleted.
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__v2.3__
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--------
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* Improved pimpl design and inheritance safety.
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_Vladislav Pyatnichenko_
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__v2.2__
|
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--------
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* The `QAPPLICATION_CLASS` macro can now be defined in the file including the
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Single Application header or with a `DEFINES+=` statement in the project file.
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__v2.1__
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||||
--------
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* A race condition can no longer occur when starting two processes nearly
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simultaneously.
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||||
Fix issue [#3](https://github.com/itay-grudev/SingleApplication/issues/3)
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||||
__v2.0__
|
||||
--------
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||||
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* SingleApplication is now being passed a reference to `argc` instead of a
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copy.
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||||
Fix issue [#1](https://github.com/itay-grudev/SingleApplication/issues/1)
|
||||
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||||
* Improved documentation.
|
||||
34
external/singleapplication/CMakeLists.txt
vendored
34
external/singleapplication/CMakeLists.txt
vendored
@@ -1,34 +0,0 @@
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cmake_minimum_required(VERSION 3.18.0)
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project(SingleApplication LANGUAGES CXX)
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set(CMAKE_AUTOMOC ON)
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add_library(${PROJECT_NAME} STATIC
|
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singleapplication.cpp
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||||
singleapplication_p.cpp
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)
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add_library(${PROJECT_NAME}::${PROJECT_NAME} ALIAS ${PROJECT_NAME})
|
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|
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# Find dependencies
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||||
find_package(Qt5 COMPONENTS Network REQUIRED)
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target_link_libraries(${PROJECT_NAME} PRIVATE Qt5::Network)
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if(QAPPLICATION_CLASS STREQUAL QApplication)
|
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find_package(Qt5 COMPONENTS Widgets REQUIRED)
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target_link_libraries(${PROJECT_NAME} PUBLIC Qt5::Widgets)
|
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elseif(QAPPLICATION_CLASS STREQUAL QGuiApplication)
|
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find_package(Qt5 COMPONENTS Gui REQUIRED)
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target_link_libraries(${PROJECT_NAME} PUBLIC Qt5::Gui)
|
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else()
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set(QAPPLICATION_CLASS QCoreApplication)
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find_package(Qt5 COMPONENTS Core REQUIRED)
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target_link_libraries(${PROJECT_NAME} PUBLIC Qt5::Core)
|
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endif()
|
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|
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if(WIN32)
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target_link_libraries(${PROJECT_NAME} PRIVATE advapi32)
|
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endif()
|
||||
|
||||
target_compile_definitions(${PROJECT_NAME} PUBLIC QAPPLICATION_CLASS=${QAPPLICATION_CLASS})
|
||||
target_include_directories(${PROJECT_NAME} PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
|
||||
24
external/singleapplication/LICENSE
vendored
24
external/singleapplication/LICENSE
vendored
@@ -1,24 +0,0 @@
|
||||
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.
|
||||
304
external/singleapplication/README.md
vendored
304
external/singleapplication/README.md
vendored
@@ -1,304 +0,0 @@
|
||||
SingleApplication
|
||||
=================
|
||||
[](https://github.com/itay-grudev/SingleApplication/actions)
|
||||
|
||||
This is a replacement of the QtSingleApplication for `Qt5`.
|
||||
|
||||
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 )
|
||||
```
|
||||
|
||||
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.
|
||||
|
||||
*__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.
|
||||
1
external/singleapplication/SingleApplication
vendored
1
external/singleapplication/SingleApplication
vendored
@@ -1 +0,0 @@
|
||||
#include "singleapplication.h"
|
||||
46
external/singleapplication/Windows.md
vendored
46
external/singleapplication/Windows.md
vendored
@@ -1,46 +0,0 @@
|
||||
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
|
||||
@@ -1,13 +0,0 @@
|
||||
cmake_minimum_required(VERSION 3.7.0)
|
||||
|
||||
project(basic LANGUAGES CXX)
|
||||
|
||||
# SingleApplication base class
|
||||
set(QAPPLICATION_CLASS QCoreApplication)
|
||||
|
||||
add_executable(basic main.cpp)
|
||||
|
||||
find_package(Qt5 COMPONENTS Core REQUIRED)
|
||||
add_subdirectory(../.. SingleApplication)
|
||||
target_link_libraries(${PROJECT_NAME} SingleApplication::SingleApplication)
|
||||
|
||||
@@ -1,5 +0,0 @@
|
||||
# Single Application implementation
|
||||
include(../../singleapplication.pri)
|
||||
DEFINES += QAPPLICATION_CLASS=QCoreApplication
|
||||
|
||||
SOURCES += main.cpp
|
||||
@@ -1,11 +0,0 @@
|
||||
#include <singleapplication.h>
|
||||
|
||||
int main(int argc, char* argv[])
|
||||
{
|
||||
// Allow secondary instances
|
||||
SingleApplication app(argc, argv);
|
||||
|
||||
qWarning() << "Started a new instance";
|
||||
|
||||
return app.exec();
|
||||
}
|
||||
@@ -1,20 +0,0 @@
|
||||
cmake_minimum_required(VERSION 3.7.0)
|
||||
|
||||
project(calculator LANGUAGES CXX)
|
||||
|
||||
set(CMAKE_AUTOMOC ON)
|
||||
|
||||
# SingleApplication base class
|
||||
set(QAPPLICATION_CLASS QApplication)
|
||||
|
||||
add_executable(${PROJECT_NAME}
|
||||
button.h
|
||||
calculator.h
|
||||
button.cpp
|
||||
calculator.cpp
|
||||
main.cpp
|
||||
)
|
||||
|
||||
find_package(Qt5 COMPONENTS Widgets REQUIRED)
|
||||
add_subdirectory(../.. SingleApplication)
|
||||
target_link_libraries(${PROJECT_NAME} SingleApplication::SingleApplication)
|
||||
@@ -1,73 +0,0 @@
|
||||
/****************************************************************************
|
||||
**
|
||||
** 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]
|
||||
@@ -1,68 +0,0 @@
|
||||
/****************************************************************************
|
||||
**
|
||||
** 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
|
||||
@@ -1,414 +0,0 @@
|
||||
/****************************************************************************
|
||||
**
|
||||
** 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]
|
||||
@@ -1,120 +0,0 @@
|
||||
/****************************************************************************
|
||||
**
|
||||
** 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
|
||||
@@ -1,11 +0,0 @@
|
||||
QT += widgets
|
||||
|
||||
HEADERS = button.h \
|
||||
calculator.h
|
||||
SOURCES = button.cpp \
|
||||
calculator.cpp \
|
||||
main.cpp
|
||||
|
||||
# Single Application implementation
|
||||
include(../../singleapplication.pri)
|
||||
DEFINES += QAPPLICATION_CLASS=QApplication
|
||||
@@ -1,71 +0,0 @@
|
||||
/****************************************************************************
|
||||
**
|
||||
** 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();
|
||||
}
|
||||
@@ -1,19 +0,0 @@
|
||||
cmake_minimum_required(VERSION 3.7.0)
|
||||
|
||||
project(sending_arguments LANGUAGES CXX)
|
||||
|
||||
set(CMAKE_AUTOMOC ON)
|
||||
|
||||
# SingleApplication base class
|
||||
set(QAPPLICATION_CLASS QCoreApplication)
|
||||
|
||||
add_executable(${PROJECT_NAME}
|
||||
main.cpp
|
||||
messagereceiver.cpp
|
||||
messagereceiver.h
|
||||
main.cpp
|
||||
)
|
||||
|
||||
find_package(Qt5 COMPONENTS Core REQUIRED)
|
||||
add_subdirectory(../.. SingleApplication)
|
||||
target_link_libraries(${PROJECT_NAME} SingleApplication::SingleApplication)
|
||||
@@ -1,26 +0,0 @@
|
||||
#include "messagereceiver.h"
|
||||
#include <singleapplication.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();
|
||||
}
|
||||
@@ -1,12 +0,0 @@
|
||||
#include "messagereceiver.h"
|
||||
#include <QDebug>
|
||||
|
||||
MessageReceiver::MessageReceiver(QObject* parent)
|
||||
: QObject(parent)
|
||||
{}
|
||||
|
||||
void MessageReceiver::receivedMessage(int instanceId, QByteArray message)
|
||||
{
|
||||
qDebug() << "Received message from instance: " << instanceId;
|
||||
qDebug() << "Message Text: " << message;
|
||||
}
|
||||
@@ -1,15 +0,0 @@
|
||||
#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
|
||||
@@ -1,9 +0,0 @@
|
||||
# Single Application implementation
|
||||
include(../../singleapplication.pri)
|
||||
DEFINES += QAPPLICATION_CLASS=QCoreApplication
|
||||
|
||||
SOURCES += main.cpp \
|
||||
messagereceiver.cpp
|
||||
|
||||
HEADERS += \
|
||||
messagereceiver.h
|
||||
285
external/singleapplication/singleapplication.cpp
vendored
285
external/singleapplication/singleapplication.cpp
vendored
@@ -1,285 +0,0 @@
|
||||
// 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/QByteArray>
|
||||
#include <QtCore/QElapsedTimer>
|
||||
#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)
|
||||
: 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;
|
||||
|
||||
// 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
|
||||
d->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();
|
||||
}
|
||||
d->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()
|
||||
{
|
||||
Q_D(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()
|
||||
{
|
||||
Q_D(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()
|
||||
{
|
||||
Q_D(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()
|
||||
{
|
||||
Q_D(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()
|
||||
{
|
||||
Q_D(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()
|
||||
{
|
||||
Q_D(SingleApplication);
|
||||
return d->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;
|
||||
|
||||
d->socket->write(message);
|
||||
bool dataWritten = d->socket->waitForBytesWritten(timeout);
|
||||
d->socket->flush();
|
||||
return dataWritten;
|
||||
}
|
||||
|
||||
/**
|
||||
* 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);
|
||||
}
|
||||
153
external/singleapplication/singleapplication.h
vendored
153
external/singleapplication/singleapplication.h
vendored
@@ -1,153 +0,0 @@
|
||||
// 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);
|
||||
~SingleApplication() override;
|
||||
|
||||
/**
|
||||
* @brief Returns if the instance is the primary instance
|
||||
* @returns {bool}
|
||||
*/
|
||||
bool isPrimary();
|
||||
|
||||
/**
|
||||
* @brief Returns if the instance is a secondary instance
|
||||
* @returns {bool}
|
||||
*/
|
||||
bool isSecondary();
|
||||
|
||||
/**
|
||||
* @brief Returns a unique identifier for the current instance
|
||||
* @returns {qint32}
|
||||
*/
|
||||
quint32 instanceId();
|
||||
|
||||
/**
|
||||
* @brief Returns the process ID (PID) of the primary instance
|
||||
* @returns {qint64}
|
||||
*/
|
||||
qint64 primaryPid();
|
||||
|
||||
/**
|
||||
* @brief Returns the username of the user running the primary instance
|
||||
* @returns {QString}
|
||||
*/
|
||||
QString primaryUser();
|
||||
|
||||
/**
|
||||
* @brief Returns the username of the current user
|
||||
* @returns {QString}
|
||||
*/
|
||||
QString currentUser();
|
||||
|
||||
/**
|
||||
* @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);
|
||||
|
||||
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
|
||||
20
external/singleapplication/singleapplication.pri
vendored
20
external/singleapplication/singleapplication.pri
vendored
@@ -1,20 +0,0 @@
|
||||
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
|
||||
475
external/singleapplication/singleapplication_p.cpp
vendored
475
external/singleapplication/singleapplication_p.cpp
vendored
@@ -1,475 +0,0 @@
|
||||
// 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 <cstddef>
|
||||
#include <cstdlib>
|
||||
|
||||
#include <QtCore/QByteArray>
|
||||
#include <QtCore/QCryptographicHash>
|
||||
#include <QtCore/QDataStream>
|
||||
#include <QtCore/QDir>
|
||||
#include <QtCore/QElapsedTimer>
|
||||
#include <QtCore/QThread>
|
||||
#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 <pwd.h>
|
||||
#include <sys/types.h>
|
||||
#include <unistd.h>
|
||||
#endif
|
||||
|
||||
#ifdef Q_OS_WIN
|
||||
#include <lmcons.h>
|
||||
#include <windows.h>
|
||||
#endif
|
||||
|
||||
SingleApplicationPrivate::SingleApplicationPrivate(SingleApplication* q_ptr)
|
||||
: q_ptr(q_ptr)
|
||||
{
|
||||
server = nullptr;
|
||||
socket = nullptr;
|
||||
memory = nullptr;
|
||||
instanceNumber = -1;
|
||||
}
|
||||
|
||||
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 (!(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()
|
||||
{
|
||||
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()
|
||||
{
|
||||
Q_Q(SingleApplication);
|
||||
|
||||
// Reset the number of connections
|
||||
auto* inst = static_cast<InstancesInfo*>(memory->data());
|
||||
|
||||
inst->primary = true;
|
||||
inst->primaryPid = q->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 timeout,
|
||||
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(timeout - 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() >= timeout)
|
||||
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;
|
||||
quint16 checksum =
|
||||
qChecksum(initMsg.constData(), static_cast<quint32>(initMsg.length()));
|
||||
writeStream << checksum;
|
||||
|
||||
// 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>(initMsg.length());
|
||||
|
||||
socket->write(header);
|
||||
socket->write(initMsg);
|
||||
socket->flush();
|
||||
if (socket->waitForBytesWritten(timeout - time.elapsed()))
|
||||
return true;
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
quint16 SingleApplicationPrivate::blockChecksum()
|
||||
{
|
||||
return qChecksum(static_cast<const char*>(memory->data()),
|
||||
offsetof(InstancesInfo, checksum));
|
||||
}
|
||||
|
||||
qint64 SingleApplicationPrivate::primaryPid()
|
||||
{
|
||||
qint64 pid;
|
||||
|
||||
memory->lock();
|
||||
auto* inst = static_cast<InstancesInfo*>(memory->data());
|
||||
pid = inst->primaryPid;
|
||||
memory->unlock();
|
||||
|
||||
return pid;
|
||||
}
|
||||
|
||||
QString SingleApplicationPrivate::primaryUser()
|
||||
{
|
||||
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, [nextConnSocket, this]() {
|
||||
auto& info = connectionMap[nextConnSocket];
|
||||
Q_EMIT this->slotClientConnectionClosed(nextConnSocket,
|
||||
info.instanceId);
|
||||
});
|
||||
|
||||
QObject::connect(
|
||||
nextConnSocket, &QLocalSocket::disconnected, [nextConnSocket, this]() {
|
||||
connectionMap.remove(nextConnSocket);
|
||||
nextConnSocket->deleteLater();
|
||||
});
|
||||
|
||||
QObject::connect(
|
||||
nextConnSocket, &QLocalSocket::readyRead, [nextConnSocket, this]() {
|
||||
auto& info = connectionMap[nextConnSocket];
|
||||
switch (info.stage) {
|
||||
case StageHeader:
|
||||
readInitMessageHeader(nextConnSocket);
|
||||
break;
|
||||
case StageBody:
|
||||
readInitMessageBody(nextConnSocket);
|
||||
break;
|
||||
case StageConnected:
|
||||
Q_EMIT this->slotDataAvailable(nextConnSocket,
|
||||
info.instanceId);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
};
|
||||
});
|
||||
}
|
||||
|
||||
void SingleApplicationPrivate::readInitMessageHeader(QLocalSocket* sock)
|
||||
{
|
||||
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 = StageBody;
|
||||
info.msgLen = msgLen;
|
||||
|
||||
if (sock->bytesAvailable() >= (qint64)msgLen) {
|
||||
readInitMessageBody(sock);
|
||||
}
|
||||
}
|
||||
|
||||
void SingleApplicationPrivate::readInitMessageBody(QLocalSocket* sock)
|
||||
{
|
||||
Q_Q(SingleApplication);
|
||||
|
||||
if (!connectionMap.contains(sock)) {
|
||||
return;
|
||||
}
|
||||
|
||||
ConnectionInfo& info = connectionMap[sock];
|
||||
if (sock->bytesAvailable() < (qint64)info.msgLen) {
|
||||
return;
|
||||
}
|
||||
|
||||
// Read the message body
|
||||
QByteArray msgBytes = sock->read(info.msgLen);
|
||||
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;
|
||||
|
||||
const quint16 actualChecksum =
|
||||
qChecksum(msgBytes.constData(),
|
||||
static_cast<quint32>(msgBytes.length() - sizeof(quint16)));
|
||||
|
||||
bool isValid = readStream.status() == QDataStream::Ok &&
|
||||
QLatin1String(latin1Name) == blockServerName &&
|
||||
msgChecksum == actualChecksum;
|
||||
|
||||
if (!isValid) {
|
||||
sock->close();
|
||||
return;
|
||||
}
|
||||
|
||||
info.instanceId = instanceId;
|
||||
info.stage = StageConnected;
|
||||
|
||||
if (connectionType == NewInstance ||
|
||||
(connectionType == SecondaryInstance &&
|
||||
options & SingleApplication::Mode::SecondaryNotification)) {
|
||||
Q_EMIT q->instanceStarted();
|
||||
}
|
||||
|
||||
if (sock->bytesAvailable() > 0) {
|
||||
Q_EMIT this->slotDataAvailable(sock, instanceId);
|
||||
}
|
||||
}
|
||||
|
||||
void SingleApplicationPrivate::slotDataAvailable(QLocalSocket* dataSocket,
|
||||
quint32 instanceId)
|
||||
{
|
||||
Q_Q(SingleApplication);
|
||||
Q_EMIT q->receivedMessage(instanceId, dataSocket->readAll());
|
||||
}
|
||||
|
||||
void SingleApplicationPrivate::slotClientConnectionClosed(
|
||||
QLocalSocket* closedSocket,
|
||||
quint32 instanceId)
|
||||
{
|
||||
if (closedSocket->bytesAvailable() > 0)
|
||||
Q_EMIT 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(8 + static_cast<unsigned long>(static_cast<float>(qrand()) /
|
||||
RAND_MAX * 10));
|
||||
#endif
|
||||
}
|
||||
106
external/singleapplication/singleapplication_p.h
vendored
106
external/singleapplication/singleapplication_p.h
vendored
@@ -1,106 +0,0 @@
|
||||
// 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 "singleapplication.h"
|
||||
#include <QtCore/QSharedMemory>
|
||||
#include <QtNetwork/QLocalServer>
|
||||
#include <QtNetwork/QLocalSocket>
|
||||
|
||||
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
|
||||
{
|
||||
StageHeader = 0,
|
||||
StageBody = 1,
|
||||
StageConnected = 2,
|
||||
};
|
||||
Q_DECLARE_PUBLIC(SingleApplication)
|
||||
|
||||
SingleApplicationPrivate(SingleApplication* q_ptr);
|
||||
~SingleApplicationPrivate() override;
|
||||
|
||||
QString getUsername();
|
||||
void genBlockServerName();
|
||||
void initializeMemoryBlock();
|
||||
void startPrimary();
|
||||
void startSecondary();
|
||||
bool connectToPrimary(int msecs, ConnectionType connectionType);
|
||||
quint16 blockChecksum();
|
||||
qint64 primaryPid();
|
||||
QString primaryUser();
|
||||
void readInitMessageHeader(QLocalSocket* socket);
|
||||
void readInitMessageBody(QLocalSocket* socket);
|
||||
void randomSleep();
|
||||
|
||||
SingleApplication* q_ptr;
|
||||
QSharedMemory* memory;
|
||||
QLocalSocket* socket;
|
||||
QLocalServer* server;
|
||||
quint32 instanceNumber;
|
||||
QString blockServerName;
|
||||
SingleApplication::Options options;
|
||||
QMap<QLocalSocket*, ConnectionInfo> connectionMap;
|
||||
|
||||
public Q_SLOTS:
|
||||
void slotConnectionEstablished();
|
||||
void slotDataAvailable(QLocalSocket*, quint32);
|
||||
void slotClientConnectionClosed(QLocalSocket*, quint32);
|
||||
};
|
||||
|
||||
#endif // SINGLEAPPLICATION_P_H
|
||||
Reference in New Issue
Block a user