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Add a new GdkScrollUnit enum that represent the
unit of scroll deltas provided by GdkScrollEvent.
The unit is accessible through
gdk_scroll_event_get_unit().

José Expósito authored Jun 27, 2021 and Carlos Garnacho committed Jan 26, 2022

Allow to create hold events as well as the required functions to get
information about the event: gesture phase, finger count, etc

Part-of: <!3454>

Add gdkenums.h for enums and keep gdktypes.h for types.

Makes both files easier to read.

Mostly fixing up indentation of continuation lines,
and other small cleanups.

Drop the `:`.

Matthias Clasen authored Feb 21, 2021 and Emmanuele Bassi committed Mar 11, 2021

Convert links, make things more concise.

This removes the GDK_CONFIGURE event and all related functions and data
types; it includes untested changes to the MacOSX, Win32 and Broadway
backends.

Replace most remaining uses of GTK+ in the docs and
user-visible strings by GTK. Also remove some leftover
"Was added in 3.x" sentences from the docs.

Clean up references to no-longer-existing APIs.

Make GdkEvents hold a single GdkDevice. This device is closer to
the logical device conceptually, although it must be sufficient for
device checks (i.e. GdkInputSource), which makes it similar to the
physical devices.

Make the logical devices have a more accurate GdkInputSource where
needed, and conflate the event devices altogether.

It currently fetches the seat from the event device, will be changed
in future commits.

Scroll events can have history too, so make a
getter that works for both. This drops the
gdk_scroll_event_get_history getter that was
added a few commits earlier, since we now
store scroll history in the same way as
motion history.

Update the docs, and all callers.

Similar to how we keep motion history for compressed
events, keep scroll history for compressed scroll
events.

Instead of a less efficient GList.

GdkEvent has been a "I-can't-believe-this-is-not-OOP" type for ages,
using a union of sub-types. This has always been problematic when it
comes to implementing accessor functions: either you get generic API
that takes a GdkEvent and uses a massive switch() to determine which
event types have the data you're looking for; or you create namespaced
accessors, but break language bindings horribly, as boxed types cannot
have derived types.

The recent conversion of GskRenderNode (which had similar issues) to
GTypeInstance, and the fact that GdkEvent is now a completely opaque
type, provide us with the chance of moving GdkEvent to GTypeInstance,
and have sub-types for GdkEvent.

The change from boxed type to GTypeInstance is pretty small, all things
considered, but ends up cascading to a larger commit, as we still have
backends and code in GTK trying to access GdkEvent structures directly.
Additionally, the naming of the public getter functions requires
renaming all the data structures to conform to the namespace/type-name
pattern.

Add all of the keyboard translation results in the key event,
so we can translate the keyboard state at the time the event
is created, and avoid doing state translation at match time.

We actually need to carry two sets of translation results,
since we ignore CapsLock when matching accelerators, in
gdk_event_matches().

At the same time, drop the scancode field - it is only ever
set on win32, and is basically unused in GTK.

Update all callers.

This is a counterpart to gdk_event_matches() that can
be used to obtain a shortcut matching an event.

Move the elaborate key event matching code from
GtkShortcutTrigger to GdkEvent, which greatly reduces
the amount of keymap api use outside of GDK.

All events are GdkEvents now.

Restructure the getters for event fields to
be more targeted at particular event types.

Update all callers, and replace all direct
event struct access with getters.

As a side-effect, this drops some unused getters.

We don't need a separate api to turn on debugging
for events.

Events are refcounted structs, and we generally don't
pass these as const.

GdkEvent is now truly readonly.

Events of type GDK_NOTHING are good for nothing.

These functions are no longer used outside of gdkevents.c.

No backend is emitting GDK_DESTROY events anymore, so no
need to carry this around.

We use a compilation symbol in our build to allow the inclusion of
specific headers while building GTK, to avoid the need to include only
the global header.

Each namespace has its own compilation symbol because we used to have
different libraries, and strict symbol visibility between libraries;
now that we have a single library, and we can use private symbols across
namespaces while building GTK, we should have a single compilation
symbol, and simplify the build rules.

Drop gdk_surface_child_new and the child surface type,
since we no longer use them. Deprecate surface apis
that only make sense with child surfaces.

This is no longer used by GTK.

Tomasz Miąsko authored Dec 22, 2018 and Christoph Reiter committed Dec 22, 2018

g-ir-scanner incorrectly evaluates macro definition that include
references to other macro definitions. Provide a correct value as an
annotation.

Differences in generated gir files:

```diff
@@ -19017 +19017 @@
-    <constant name="PRIORITY_REDRAW" value="20" c:type="GDK_PRIORITY_REDRAW">
+    <constant name="PRIORITY_REDRAW" value="120" c:type="GDK_PRIORITY_REDRAW">
@@ -74229,3 +74229,3 @@
     </constant>
-    <constant name="PRIORITY_RESIZE" value="10" c:type="GTK_PRIORITY_RESIZE">
+    <constant name="PRIORITY_RESIZE" value="110" c:type="GTK_PRIORITY_RESIZE">
       <doc xml:space="preserve">Use this priority for functionality related to size allocation.
@@ -106786,3 +106786,3 @@
     <constant name="TEXT_VIEW_PRIORITY_VALIDATE"
-              value="5"
+              value="125"
               c:type="GTK_TEXT_VIEW_PRIORITY_VALIDATE">
```

See !472

You want to use an IM module to get strings out of keypresses, not some
crude hack that only works on X11 and Wayland anyway.

This reverts commit a8926c9d.

We are really inconsistent about generating these,
and they are not actually used in GTK+. Instead,
add a boolean GdkSurface::mapped property.

Replace expose events with a GdkSurface::expose signal.
This is part of the move to use events only for input.

Replace configure events with a GdkSurface::size-changed signal.
This is part of the move to use events only for input.

Rename gdkdnd.h to gdkdrag.h, to go along with gdkdrop.h

This commit includes the necessary updates to the X11, Wayland
and Broadway backends. Other backends have to be updated separately.