GTK+ 4 Migration

A page to track the migration to Gtk4.

Preparation:

See: https://docs.gtk.org/gtk4/migrating-3to4.html

• ☐ Do not use GTK-specific command line arguments
• ☐ Do not use widget style properties
• ☐ Review your window creation flags (3x src/ui/widget/color-slider.cpp)
• ☐ Stop using direct access to GdkEvent structs
• ☑ Stop using gdk_pointer_warp()
• ☑ Stop using non-RGBA visuals
• ☑ gtk_widget_set_app_paintable
• ☐ Stop using GtkBox padding, fill and expand child properties
• ☐ Stop using the state argument of GtkStyleContext getters
• ☐ Stop using gdk_pixbuf_get_from_window() and gdk_cairo_set_source_window()
• ☐ Stop using GtkButton's image-related API
• ☐ Stop using GtkWidget event signals
• ☐ Set a proper application ID
• ☐ Stop using gtk_main() and related APIs (2geom tests, autotrace, script)
• ☐ Reduce the use of gtk_widget_destroy()
• ☐ Stop using the GtkWidget.destroy vfunc
• ☐ Reduce the use of generic container APIs
• ☐ Review your use of icon resources

At time of switch:

Some of these we maybe able to do earlier.

• ☐ Subclassing widgets
• ☐ Life-cycle handling
• ☐ Stop using GdkScreen
• ☐ Stop using the root window
• ☐ Stop using GdkVisual
• ☐ Stop using GdkDeviceManager
• ☐ Adapt to GdkWindow API changes
• ☐ The "iconified" window state has been renamed to "minimized"
• ☐ Adapt to GdkEvent API changes
• ☐ Stop using grabs
• ☐ Adapt to coordinate API changes
• ☐ Adapt to GdkKeymap API changes
• ☐ Adapt to changes in keyboard modifier handling
• ☐ Replace GtkClipboard with GdkClipboard
• ☐ Stop using gtk_get_current_... APIs
• ☐ Convert your UI files
• ☐ Adapt to GtkBuilder API changes
• ☐ Adapt to event controller API changes
• ☐ Focus handling changes
• ☐ Use the new apis for keyboard shortcuts
• ☐ Stop using GtkEventBox
• ☐ Stop using GtkButtonBox
• ☐ Adapt to GtkBox API changes
• ☐ Adapt to GtkWindow API changes
• ☐ Adapt to GtkHeaderBar and GtkActionBar API changes
• ☐ Adapt to GtkStack, GtkAssistant and GtkNotebook API changes
• ☐ Adapt to button class hierarchy changes
• ☐ Adapt to GtkScrolledWindow API changes
• ☐ Adapt to GtkBin removal
• ☐ Adapt to GtkContainer removal
• ☐ Stop using GtkContainer::border-width
• ☐ Adapt to coordinate API changes
• ☐ Adapt to GtkStyleContext API changes
• ☐ Adapt to GtkCssProvider API changes
• ☐ Stop using GtkShadowType and GtkRelief properties
• ☐ Adapt to GtkWidget's size request changes
• ☐ Adapt to GtkWidget's size allocation changes
• ☐ Switch to GtkWidget's children APIs
• ☐ and about 50 more entries! ...
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