* Move GTK compatibility macros into a separate header
* Fix Cairo compatibility checks
* Move Glib-namespaced definitions to GtkCompat header
* Remove unused stringify definitions since we're using fmtlib
* Automatically (re)order include directives (GTK client)
Include our headers first to ease IWYU enforcement.
* Fix includes missing from headers (GTK client)
* Fix build on Mac after includes reordering
Defaults to `OFF`. Downstream packagers are advised against enabling it
as we can't guarantee it working on every possible configuration.
Added the actual compile flag in the GTK client subdirectory and not
the top-level CMakeLists.txt file due to other subprojects not being
ready.
Fixed the only GTK client warning reported by Clang on Mac.
* Make compact mode switch work for both GTK 3 and 4
* Implement GTK 4-specific view gesture handling
* Fix torrents view context menu on GTK 4
* Explicitly show/hide menubar on startup/teardown
* Switch from `Gtk::Pixbuf` to `Gio::Icon` for views
* Support GTK 4 exceptions based on `std::exception`
* Fix options menu setup with GTK 4
* Use `delete-event` (GTK 3) and `close-request` (GTK 4) signals to handle window clousure
* Add custom file chooser button implementation
GTK 4 drops FileChooserButton widget and suggests implementing it using
Button.
* Add helpers to set X11 hints with GTK 4
* Remove `HigWorkarea` class that's no longer used
* Make main menu shortcuts work with GTK 4
* Make drops work in main window and make dialog with GTK 4
* Remove unused `gtr_action_get_widget()` helper
* Fix text direction mark setup with GTK 4 (due to switch to enum class)
* Fix file tree font size calculation with GTK 4
* Fix crash during shutdown with GTK 4
* Switch from `RadioButton` to `CheckButton` for compatibility with GTK 4
* Fix opening files with GTK 4
* Rework torrent cell renderer to support both GTK 3 and 4
* Disable system tray icon support with GTK 4
* Fix windows positioning with GTK 4
* Fix focus event handling with GTK 4
* Adapt to tree model row/iterator changes in GTK 4
* Adapt to toplevel/root window changes in GTK 4
* Adapt to clipboard changes in GTK 4
* Adapt to icon/theme changes in GTK 4
* Adapt to file/path changes in GTK 4
* Random leftover fixes for GTK 4 compatibility
* Clean up unused code
* Move GTK 3 *.ui files into a subdirectory
* Add GTK 4 *.ui files
* Search for both GTK 3 and 4 during configuration
Julien