GNOME.org
 

[gtk+] gdk: Make each backend have a custom GdkDrawingContext subclass

commit cb18752f94c33f3b5886faa472a11bad872923a2
Author: Benjamin Otte <otte redhat com>
Date:   Sun Nov 20 07:16:32 2016 +0100

    gdk: Make each backend have a custom GdkDrawingContext subclass

 gdk/broadway/Makefile.am                  |    2 +
 gdk/broadway/gdkdrawingcontext-broadway.c |   33 +++++++++++++++
 gdk/broadway/gdkdrawingcontext-broadway.h |   48 ++++++++++++++++++++++
 gdk/broadway/gdkwindow-broadway.c         |   12 +++++
 gdk/gdkwindow.c                           |   14 +------
 gdk/mir/Makefile.am                       |    1 +
 gdk/mir/gdkmir-private.h                  |    2 +
 gdk/mir/gdkmirdrawingcontext.c            |   63 +++++++++++++++++++++++++++++
 gdk/mir/gdkmirwindowimpl.c                |    1 +
 gdk/quartz/Makefile.am                    |    2 +
 gdk/quartz/gdkdrawingcontext-quartz.c     |   33 +++++++++++++++
 gdk/quartz/gdkdrawingcontext-quartz.h     |   48 ++++++++++++++++++++++
 gdk/quartz/gdkwindow-quartz.c             |   12 +++++
 gdk/wayland/Makefile.am                   |    2 +
 gdk/wayland/gdkdrawingcontext-wayland.c   |   33 +++++++++++++++
 gdk/wayland/gdkdrawingcontext-wayland.h   |   48 ++++++++++++++++++++++
 gdk/wayland/gdkwindow-wayland.c           |   12 +++++
 gdk/win32/Makefile.am                     |    2 +
 gdk/win32/gdkdrawingcontext-win32.c       |   33 +++++++++++++++
 gdk/win32/gdkdrawingcontext-win32.h       |   48 ++++++++++++++++++++++
 gdk/win32/gdkwindow-win32.c               |   12 +++++
 gdk/x11/Makefile.am                       |    2 +
 gdk/x11/gdkdrawingcontext-x11.c           |   33 +++++++++++++++
 gdk/x11/gdkdrawingcontext-x11.h           |   48 ++++++++++++++++++++++
 gdk/x11/gdkwindow-x11.c                   |   12 +++++
 25 files changed, 543 insertions(+), 13 deletions(-)
---
diff --git a/gdk/broadway/Makefile.am b/gdk/broadway/Makefile.am
index be5304a..5858eeb 100644
--- a/gdk/broadway/Makefile.am
+++ b/gdk/broadway/Makefile.am
@@ -61,6 +61,8 @@ libgdk_broadway_la_SOURCES =          \
        gdkdisplay-broadway.c   \
        gdkdisplay-broadway.h   \
        gdkdnd-broadway.c       \
+       gdkdrawingcontext-broadway.c    \
+       gdkdrawingcontext-broadway.h    \
        gdkeventsource.c        \
        gdkeventsource.h        \
        gdkglobals-broadway.c   \
diff --git a/gdk/broadway/gdkdrawingcontext-broadway.c b/gdk/broadway/gdkdrawingcontext-broadway.c
new file mode 100644
index 0000000..ea1ec85
--- /dev/null
+++ b/gdk/broadway/gdkdrawingcontext-broadway.c
@@ -0,0 +1,33 @@
+/* GDK - The GIMP Drawing Kit
+ * Copyright 2016  Benjamin Otte <otte gnome org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include "gdkdrawingcontext-broadway.h"
+
+G_DEFINE_TYPE (GdkBroadwayDrawingContext, gdk_broadway_drawing_context, GDK_TYPE_DRAWING_CONTEXT)
+
+static void
+gdk_broadway_drawing_context_class_init (GdkBroadwayDrawingContextClass *klass)
+{
+}
+
+static void
+gdk_broadway_drawing_context_init (GdkBroadwayDrawingContext *self)
+{
+}
+
diff --git a/gdk/broadway/gdkdrawingcontext-broadway.h b/gdk/broadway/gdkdrawingcontext-broadway.h
new file mode 100644
index 0000000..03883d8
--- /dev/null
+++ b/gdk/broadway/gdkdrawingcontext-broadway.h
@@ -0,0 +1,48 @@
+/* GDK - The GIMP Drawing Kit
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GDK_BROADWAY_DRAWING_CONTEXT_H__
+#define __GDK_BROADWAY_DRAWING_CONTEXT_H__
+
+#include "gdk/gdkdrawingcontextprivate.h"
+
+G_BEGIN_DECLS
+
+#define GDK_TYPE_BROADWAY_DRAWING_CONTEXT                (gdk_broadway_drawing_context_get_type ())
+#define GDK_BROADWAY_DRAWING_CONTEXT(obj)                (G_TYPE_CHECK_INSTANCE_CAST ((obj), 
GDK_TYPE_BROADWAY_DRAWING_CONTEXT, GdkBroadwayDrawingContext))
+#define GDK_IS_BROADWAY_DRAWING_CONTEXT(obj)             (G_TYPE_CHECK_INSTANCE_TYPE ((obj), 
GDK_TYPE_BROADWAY_DRAWING_CONTEXT))
+#define GDK_BROADWAY_DRAWING_CONTEXT_CLASS(klass)        (G_TYPE_CHECK_CLASS_CAST ((klass), 
GDK_TYPE_BROADWAY_DRAWING_CONTEXT, GdkBroadwayDrawingContextClass))
+#define GDK_IS_BROADWAY_DRAWING_CONTEXT_CLASS(klass)     (G_TYPE_CHECK_CLASS_TYPE ((klass), 
GDK_TYPE_BROADWAY_DRAWING_CONTEXT))
+#define GDK_BROADWAY_DRAWING_CONTEXT_GET_CLASS(obj)      (G_TYPE_INSTANCE_GET_CLASS ((obj), 
GDK_TYPE_BROADWAY_DRAWING_CONTEXT, GdkBroadwayDrawingContextClass))
+
+typedef struct _GdkBroadwayDrawingContext       GdkBroadwayDrawingContext;
+typedef struct _GdkBroadwayDrawingContextClass  GdkBroadwayDrawingContextClass;
+
+struct _GdkBroadwayDrawingContext
+{
+  GdkDrawingContext parent_instance;
+};
+
+struct _GdkBroadwayDrawingContextClass
+{
+  GdkDrawingContextClass parent_instance;
+};
+
+GType gdk_broadway_drawing_context_get_type (void) G_GNUC_CONST;
+
+G_END_DECLS
+
+#endif /* __GDK_BROADWAY_DRAWING_CONTEXT_H__ */
diff --git a/gdk/broadway/gdkwindow-broadway.c b/gdk/broadway/gdkwindow-broadway.c
index e54abd2..1ddc444 100644
--- a/gdk/broadway/gdkwindow-broadway.c
+++ b/gdk/broadway/gdkwindow-broadway.c
@@ -33,6 +33,7 @@
 #include "gdkwindow.h"
 #include "gdkwindowimpl.h"
 #include "gdkdisplay-broadway.h"
+#include "gdkdrawingcontext-broadway.h"
 #include "gdkprivate-broadway.h"
 #include "gdkinternals.h"
 #include "gdkdeviceprivate.h"
@@ -1510,6 +1511,16 @@ gdk_broadway_get_last_seen_time (GdkWindow  *window)
   return _gdk_broadway_server_get_last_seen_time (GDK_BROADWAY_DISPLAY (display)->server);
 }
 
+static GdkDrawingContext *
+gdk_broadway_window_create_draw_context (GdkWindow            *window,
+                                        const cairo_region_t *region)
+{
+  return g_object_new (GDK_TYPE_BROADWAY_DRAWING_CONTEXT,
+                       "window", window,
+                       "clip", region,
+                       NULL);
+}
+
 static void
 gdk_window_impl_broadway_class_init (GdkWindowImplBroadwayClass *klass)
 {
@@ -1588,4 +1599,5 @@ gdk_window_impl_broadway_class_init (GdkWindowImplBroadwayClass *klass)
   impl_class->change_property = _gdk_broadway_window_change_property;
   impl_class->delete_property = _gdk_broadway_window_delete_property;
   impl_class->get_drag_protocol = _gdk_broadway_window_get_drag_protocol;
+  impl_class->create_draw_context = gdk_broadway_window_create_draw_context;
 }
diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index 0fd2023..f3661b8 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -2892,7 +2892,6 @@ gdk_window_begin_draw_frame (GdkWindow            *window,
                              const cairo_region_t *region)
 {
   GdkDrawingContext *context;
-  GdkWindowImplClass *impl_class;
 
   g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
 
@@ -2907,18 +2906,7 @@ gdk_window_begin_draw_frame (GdkWindow            *window,
   if (gdk_window_has_native (window) && gdk_window_is_toplevel (window))
     gdk_window_begin_paint_internal (window, region);
 
-  impl_class = GDK_WINDOW_IMPL_GET_CLASS (window->impl);
-  if (impl_class->create_draw_context != NULL)
-    {
-      context = impl_class->create_draw_context (window, region);
-    }
-  else
-    {
-      context = g_object_new (GDK_TYPE_DRAWING_CONTEXT,
-                              "window", window,
-                              "clip", region,
-                              NULL);
-    }
+  context = GDK_WINDOW_IMPL_GET_CLASS (window->impl)->create_draw_context (window, region);
 
   /* Do not take a reference, to avoid creating cycles */
   window->drawing_context = context;
diff --git a/gdk/mir/Makefile.am b/gdk/mir/Makefile.am
index 654b8f9..87ec55b 100644
--- a/gdk/mir/Makefile.am
+++ b/gdk/mir/Makefile.am
@@ -24,6 +24,7 @@ libgdk_mir_la_SOURCES =       \
        gdkmircursor.c \
        gdkmirdevicemanager.c \
        gdkmirdisplay.c \
+       gdkmirdrawingcontext.c \
        gdkmireventsource.c     \
        gdkmirglcontext.c \
        gdkmirkeyboard.c \
diff --git a/gdk/mir/gdkmir-private.h b/gdk/mir/gdkmir-private.h
index 69f927f..afe7a7c 100644
--- a/gdk/mir/gdkmir-private.h
+++ b/gdk/mir/gdkmir-private.h
@@ -95,6 +95,8 @@ void _gdk_mir_window_impl_set_cursor_state (GdkMirWindowImpl *impl, gdouble x, g
 
 void _gdk_mir_window_impl_get_cursor_state (GdkMirWindowImpl *impl, gdouble *x, gdouble *y, gboolean 
*cursor_inside, guint *button_state);
 
+GdkDrawingContext *gdk_mir_drawing_context_new (GdkWindow *window, const cairo_region_t *region);
+
 GdkMirEventSource *_gdk_mir_display_get_event_source (GdkDisplay *display);
 
 GdkMirEventSource *_gdk_mir_event_source_new (GdkDisplay *display);
diff --git a/gdk/mir/gdkmirdrawingcontext.c b/gdk/mir/gdkmirdrawingcontext.c
new file mode 100644
index 0000000..e888a4a
--- /dev/null
+++ b/gdk/mir/gdkmirdrawingcontext.c
@@ -0,0 +1,63 @@
+/* GDK - The GIMP Drawing Kit
+ * Copyright 2016  Benjamin Otte <otte gnome org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#define GDK_TYPE_MIR_DRAWING_CONTEXT                (gdk_mir_drawing_context_get_type ())
+#define GDK_MIR_DRAWING_CONTEXT(obj)                (G_TYPE_CHECK_INSTANCE_CAST ((obj), 
GDK_TYPE_MIR_DRAWING_CONTEXT, GdkMirDrawingContext))
+#define GDK_IS_MIR_DRAWING_CONTEXT(obj)             (G_TYPE_CHECK_INSTANCE_TYPE ((obj), 
GDK_TYPE_MIR_DRAWING_CONTEXT))
+#define GDK_MIR_DRAWING_CONTEXT_CLASS(klass)        (G_TYPE_CHECK_CLASS_CAST ((klass), 
GDK_TYPE_MIR_DRAWING_CONTEXT, GdkMirDrawingContextClass))
+#define GDK_IS_MIR_DRAWING_CONTEXT_CLASS(klass)     (G_TYPE_CHECK_CLASS_TYPE ((klass), 
GDK_TYPE_MIR_DRAWING_CONTEXT))
+#define GDK_MIR_DRAWING_CONTEXT_GET_CLASS(obj)      (G_TYPE_INSTANCE_GET_CLASS ((obj), 
GDK_TYPE_MIR_DRAWING_CONTEXT, GdkMirDrawingContextClass))
+
+typedef struct _GdkMirDrawingContext       GdkMirDrawingContext;
+typedef struct _GdkMirDrawingContextClass  GdkMirDrawingContextClass;
+
+struct _GdkMirDrawingContext
+{
+  GdkDrawingContext parent_instance;
+};
+
+struct _GdkMirDrawingContextClass
+{
+  GdkDrawingContextClass parent_instance;
+};
+
+GType gdk_mir_drawing_context_get_type (void) G_GNUC_CONST;
+
+G_DEFINE_TYPE (GdkMirDrawingContext, gdk_mir_drawing_context, GDK_TYPE_DRAWING_CONTEXT)
+
+static void
+gdk_mir_drawing_context_class_init (GdkMirDrawingContextClass *klass)
+{
+}
+
+static void
+gdk_mir_drawing_context_init (GdkMirDrawingContext *self)
+{
+}
+
+GdkDrawingContext *
+gdk_mir_drawing_context_new (GdkWindow            *window,
+                             const cairo_region_t *region)
+{
+  return g_object_new (GDK_TYPE_MIR_DRAWING_CONTEXT,
+                       "window", window,
+                       "clip", region,
+                       NULL);
+}
+
diff --git a/gdk/mir/gdkmirwindowimpl.c b/gdk/mir/gdkmirwindowimpl.c
index ec76ac5..96f65a4 100644
--- a/gdk/mir/gdkmirwindowimpl.c
+++ b/gdk/mir/gdkmirwindowimpl.c
@@ -1832,5 +1832,6 @@ gdk_mir_window_impl_class_init (GdkMirWindowImplClass *klass)
   impl_class->set_opaque_region = gdk_mir_window_impl_set_opaque_region;
   impl_class->set_shadow_width = gdk_mir_window_impl_set_shadow_width;
   impl_class->create_gl_context = gdk_mir_window_impl_create_gl_context;
+  impl_class->create_draw_context = gdk_mir_drawing_context_new;
   impl_class->invalidate_for_new_frame = gdk_mir_window_impl_invalidate_for_new_frame;
 }
diff --git a/gdk/quartz/Makefile.am b/gdk/quartz/Makefile.am
index eda5263..ba5e8d2 100644
--- a/gdk/quartz/Makefile.am
+++ b/gdk/quartz/Makefile.am
@@ -30,6 +30,8 @@ libgdk_quartz_la_SOURCES =            \
        gdkdevicemanager-core-quartz.h  \
        gdkdisplay-quartz.c     \
        gdkdisplaymanager-quartz.c      \
+       gdkdrawingcontext-quartz.c      \
+       gdkdrawingcontext-quartz.h      \
        gdkdnd-quartz.c         \
        gdkdnd-quartz.h         \
        gdkevents-quartz.c      \
diff --git a/gdk/quartz/gdkdrawingcontext-quartz.c b/gdk/quartz/gdkdrawingcontext-quartz.c
new file mode 100644
index 0000000..1e30ed7
--- /dev/null
+++ b/gdk/quartz/gdkdrawingcontext-quartz.c
@@ -0,0 +1,33 @@
+/* GDK - The GIMP Drawing Kit
+ * Copyright 2016  Benjamin Otte <otte gnome org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include "gdkdrawingcontext-quartz.h"
+
+G_DEFINE_TYPE (GdkQuartzDrawingContext, gdk_quartz_drawing_context, GDK_TYPE_DRAWING_CONTEXT)
+
+static void
+gdk_quartz_drawing_context_class_init (GdkQuartzDrawingContextClass *klass)
+{
+}
+
+static void
+gdk_quartz_drawing_context_init (GdkQuartzDrawingContext *self)
+{
+}
+
diff --git a/gdk/quartz/gdkdrawingcontext-quartz.h b/gdk/quartz/gdkdrawingcontext-quartz.h
new file mode 100644
index 0000000..55c9d69
--- /dev/null
+++ b/gdk/quartz/gdkdrawingcontext-quartz.h
@@ -0,0 +1,48 @@
+/* GDK - The GIMP Drawing Kit
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GDK_QUARTZ_DRAWING_CONTEXT_H__
+#define __GDK_QUARTZ_DRAWING_CONTEXT_H__
+
+#include "gdk/gdkdrawingcontextprivate.h"
+
+G_BEGIN_DECLS
+
+#define GDK_TYPE_QUARTZ_DRAWING_CONTEXT                (gdk_quartz_drawing_context_get_type ())
+#define GDK_QUARTZ_DRAWING_CONTEXT(obj)                (G_TYPE_CHECK_INSTANCE_CAST ((obj), 
GDK_TYPE_QUARTZ_DRAWING_CONTEXT, GdkQuartzDrawingContext))
+#define GDK_IS_QUARTZ_DRAWING_CONTEXT(obj)             (G_TYPE_CHECK_INSTANCE_TYPE ((obj), 
GDK_TYPE_QUARTZ_DRAWING_CONTEXT))
+#define GDK_QUARTZ_DRAWING_CONTEXT_CLASS(klass)        (G_TYPE_CHECK_CLASS_CAST ((klass), 
GDK_TYPE_QUARTZ_DRAWING_CONTEXT, GdkQuartzDrawingContextClass))
+#define GDK_IS_QUARTZ_DRAWING_CONTEXT_CLASS(klass)     (G_TYPE_CHECK_CLASS_TYPE ((klass), 
GDK_TYPE_QUARTZ_DRAWING_CONTEXT))
+#define GDK_QUARTZ_DRAWING_CONTEXT_GET_CLASS(obj)      (G_TYPE_INSTANCE_GET_CLASS ((obj), 
GDK_TYPE_QUARTZ_DRAWING_CONTEXT, GdkQuartzDrawingContextClass))
+
+typedef struct _GdkQuartzDrawingContext       GdkQuartzDrawingContext;
+typedef struct _GdkQuartzDrawingContextClass  GdkQuartzDrawingContextClass;
+
+struct _GdkQuartzDrawingContext
+{
+  GdkDrawingContext parent_instance;
+};
+
+struct _GdkQuartzDrawingContextClass
+{
+  GdkDrawingContextClass parent_instance;
+};
+
+GType gdk_quartz_drawing_context_get_type (void) G_GNUC_CONST;
+
+G_END_DECLS
+
+#endif /* __GDK_QUARTZ_DRAWING_CONTEXT_H__ */
diff --git a/gdk/quartz/gdkwindow-quartz.c b/gdk/quartz/gdkwindow-quartz.c
index 9349537..1c548cc 100644
--- a/gdk/quartz/gdkwindow-quartz.c
+++ b/gdk/quartz/gdkwindow-quartz.c
@@ -25,6 +25,7 @@
 
 #include "gdkwindowimpl.h"
 #include "gdkprivate-quartz.h"
+#include "gdkdrawingcontext-quartz.h"
 #include "gdkglcontext-quartz.h"
 #include "gdkquartzscreen.h"
 #include "gdkquartzcursor.h"
@@ -2825,6 +2826,16 @@ gdk_quartz_window_get_scale_factor (GdkWindow *window)
   return 1;
 }
 
+static GdkDrawingContext *
+gdk_quartz_window_create_draw_context (GdkWindow            *window,
+                                       const cairo_region_t *region)
+{
+  return g_object_new (GDK_TYPE_QUARTZ_DRAWING_CONTEXT,
+                       "window", window,
+                       "clip", region,
+                       NULL);
+}
+
 static void
 gdk_window_impl_quartz_class_init (GdkWindowImplQuartzClass *klass)
 {
@@ -2909,6 +2920,7 @@ gdk_window_impl_quartz_class_init (GdkWindowImplQuartzClass *klass)
   impl_class->delete_property = _gdk_quartz_window_delete_property;
 
   impl_class->create_gl_context = gdk_quartz_window_create_gl_context;
+  impl_class->create_draw_context = gdk_quartz_window_create_draw_context;
 
   impl_quartz_class->get_context = gdk_window_impl_quartz_get_context;
   impl_quartz_class->release_context = gdk_window_impl_quartz_release_context;
diff --git a/gdk/wayland/Makefile.am b/gdk/wayland/Makefile.am
index 127e091..c40e24f 100644
--- a/gdk/wayland/Makefile.am
+++ b/gdk/wayland/Makefile.am
@@ -46,6 +46,8 @@ libgdk_wayland_la_SOURCES =                   \
        gdkdevice-wayland.c                     \
        gdkdisplay-wayland.c                    \
        gdkdisplay-wayland.h                    \
+       gdkdrawingcontext-wayland.c             \
+       gdkdrawingcontext-wayland.h             \
        gdkdnd-wayland.c                        \
        gdkeventsource.c                        \
        gdkkeys-wayland.c                       \
diff --git a/gdk/wayland/gdkdrawingcontext-wayland.c b/gdk/wayland/gdkdrawingcontext-wayland.c
new file mode 100644
index 0000000..927e569
--- /dev/null
+++ b/gdk/wayland/gdkdrawingcontext-wayland.c
@@ -0,0 +1,33 @@
+/* GDK - The GIMP Drawing Kit
+ * Copyright 2016  Benjamin Otte <otte gnome org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include "gdkdrawingcontext-wayland.h"
+
+G_DEFINE_TYPE (GdkWaylandDrawingContext, gdk_wayland_drawing_context, GDK_TYPE_DRAWING_CONTEXT)
+
+static void
+gdk_wayland_drawing_context_class_init (GdkWaylandDrawingContextClass *klass)
+{
+}
+
+static void
+gdk_wayland_drawing_context_init (GdkWaylandDrawingContext *self)
+{
+}
+
diff --git a/gdk/wayland/gdkdrawingcontext-wayland.h b/gdk/wayland/gdkdrawingcontext-wayland.h
new file mode 100644
index 0000000..2577f74
--- /dev/null
+++ b/gdk/wayland/gdkdrawingcontext-wayland.h
@@ -0,0 +1,48 @@
+/* GDK - The GIMP Drawing Kit
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GDK_WAYLAND_DRAWING_CONTEXT_H__
+#define __GDK_WAYLAND_DRAWING_CONTEXT_H__
+
+#include "gdk/gdkdrawingcontextprivate.h"
+
+G_BEGIN_DECLS
+
+#define GDK_TYPE_WAYLAND_DRAWING_CONTEXT                (gdk_wayland_drawing_context_get_type ())
+#define GDK_WAYLAND_DRAWING_CONTEXT(obj)                (G_TYPE_CHECK_INSTANCE_CAST ((obj), 
GDK_TYPE_WAYLAND_DRAWING_CONTEXT, GdkWaylandDrawingContext))
+#define GDK_IS_WAYLAND_DRAWING_CONTEXT(obj)             (G_TYPE_CHECK_INSTANCE_TYPE ((obj), 
GDK_TYPE_WAYLAND_DRAWING_CONTEXT))
+#define GDK_WAYLAND_DRAWING_CONTEXT_CLASS(klass)        (G_TYPE_CHECK_CLASS_CAST ((klass), 
GDK_TYPE_WAYLAND_DRAWING_CONTEXT, GdkWaylandDrawingContextClass))
+#define GDK_IS_WAYLAND_DRAWING_CONTEXT_CLASS(klass)     (G_TYPE_CHECK_CLASS_TYPE ((klass), 
GDK_TYPE_WAYLAND_DRAWING_CONTEXT))
+#define GDK_WAYLAND_DRAWING_CONTEXT_GET_CLASS(obj)      (G_TYPE_INSTANCE_GET_CLASS ((obj), 
GDK_TYPE_WAYLAND_DRAWING_CONTEXT, GdkWaylandDrawingContextClass))
+
+typedef struct _GdkWaylandDrawingContext       GdkWaylandDrawingContext;
+typedef struct _GdkWaylandDrawingContextClass  GdkWaylandDrawingContextClass;
+
+struct _GdkWaylandDrawingContext
+{
+  GdkDrawingContext parent_instance;
+};
+
+struct _GdkWaylandDrawingContextClass
+{
+  GdkDrawingContextClass parent_instance;
+};
+
+GType gdk_wayland_drawing_context_get_type (void) G_GNUC_CONST;
+
+G_END_DECLS
+
+#endif /* __GDK_WAYLAND_DRAWING_CONTEXT_H__ */
diff --git a/gdk/wayland/gdkwindow-wayland.c b/gdk/wayland/gdkwindow-wayland.c
index 010add3..12ce613 100644
--- a/gdk/wayland/gdkwindow-wayland.c
+++ b/gdk/wayland/gdkwindow-wayland.c
@@ -26,6 +26,7 @@
 #include "gdkwindow.h"
 #include "gdkwindowimpl.h"
 #include "gdkdisplay-wayland.h"
+#include "gdkdrawingcontext-wayland.h"
 #include "gdkglcontext-wayland.h"
 #include "gdkframeclockprivate.h"
 #include "gdkprivate-wayland.h"
@@ -3563,6 +3564,16 @@ gdk_wayland_window_show_window_menu (GdkWindow *window,
   return TRUE;
 }
 
+static GdkDrawingContext *
+gdk_wayland_window_create_draw_context (GdkWindow            *window,
+                                        const cairo_region_t *region)
+{
+  return g_object_new (GDK_TYPE_WAYLAND_DRAWING_CONTEXT,
+                       "window", window,
+                       "clip", region,
+                       NULL);
+}
+
 static void
 _gdk_window_impl_wayland_class_init (GdkWindowImplWaylandClass *klass)
 {
@@ -3650,6 +3661,7 @@ _gdk_window_impl_wayland_class_init (GdkWindowImplWaylandClass *klass)
   impl_class->set_shadow_width = gdk_wayland_window_set_shadow_width;
   impl_class->show_window_menu = gdk_wayland_window_show_window_menu;
   impl_class->create_gl_context = gdk_wayland_window_create_gl_context;
+  impl_class->create_draw_context = gdk_wayland_window_create_draw_context;
   impl_class->invalidate_for_new_frame = gdk_wayland_window_invalidate_for_new_frame;
 
   signals[COMMITTED] = g_signal_new ("committed",
diff --git a/gdk/win32/Makefile.am b/gdk/win32/Makefile.am
index ebd4ae6..eb76bbc 100644
--- a/gdk/win32/Makefile.am
+++ b/gdk/win32/Makefile.am
@@ -40,6 +40,8 @@ libgdk_win32_la_SOURCES = \
        gdkdisplay-win32.c \
        gdkdisplay-win32.h \
        gdkdisplaymanager-win32.c \
+       gdkdrawingcontext-win32.c \
+       gdkdrawingcontext-win32.h \
        gdkdnd-win32.c \
        gdkevents-win32.c \
        gdkgeometry-win32.c \
diff --git a/gdk/win32/gdkdrawingcontext-win32.c b/gdk/win32/gdkdrawingcontext-win32.c
new file mode 100644
index 0000000..6938422
--- /dev/null
+++ b/gdk/win32/gdkdrawingcontext-win32.c
@@ -0,0 +1,33 @@
+/* GDK - The GIMP Drawing Kit
+ * Copyright 2016  Benjamin Otte <otte gnome org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include "gdkdrawingcontext-win32.h"
+
+G_DEFINE_TYPE (GdkWin32DrawingContext, gdk_win32_drawing_context, GDK_TYPE_DRAWING_CONTEXT)
+
+static void
+gdk_win32_drawing_context_class_init (GdkWin32DrawingContextClass *klass)
+{
+}
+
+static void
+gdk_win32_drawing_context_init (GdkWin32DrawingContext *self)
+{
+}
+
diff --git a/gdk/win32/gdkdrawingcontext-win32.h b/gdk/win32/gdkdrawingcontext-win32.h
new file mode 100644
index 0000000..fe6fa45
--- /dev/null
+++ b/gdk/win32/gdkdrawingcontext-win32.h
@@ -0,0 +1,48 @@
+/* GDK - The GIMP Drawing Kit
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GDK_WIN32_DRAWING_CONTEXT_H__
+#define __GDK_WIN32_DRAWING_CONTEXT_H__
+
+#include "gdk/gdkdrawingcontextprivate.h"
+
+G_BEGIN_DECLS
+
+#define GDK_TYPE_WIN32_DRAWING_CONTEXT                (gdk_win32_drawing_context_get_type ())
+#define GDK_WIN32_DRAWING_CONTEXT(obj)                (G_TYPE_CHECK_INSTANCE_CAST ((obj), 
GDK_TYPE_WIN32_DRAWING_CONTEXT, GdkWin32DrawingContext))
+#define GDK_IS_WIN32_DRAWING_CONTEXT(obj)             (G_TYPE_CHECK_INSTANCE_TYPE ((obj), 
GDK_TYPE_WIN32_DRAWING_CONTEXT))
+#define GDK_WIN32_DRAWING_CONTEXT_CLASS(klass)        (G_TYPE_CHECK_CLASS_CAST ((klass), 
GDK_TYPE_WIN32_DRAWING_CONTEXT, GdkWin32DrawingContextClass))
+#define GDK_IS_WIN32_DRAWING_CONTEXT_CLASS(klass)     (G_TYPE_CHECK_CLASS_TYPE ((klass), 
GDK_TYPE_WIN32_DRAWING_CONTEXT))
+#define GDK_WIN32_DRAWING_CONTEXT_GET_CLASS(obj)      (G_TYPE_INSTANCE_GET_CLASS ((obj), 
GDK_TYPE_WIN32_DRAWING_CONTEXT, GdkWin32DrawingContextClass))
+
+typedef struct _GdkWin32DrawingContext       GdkWin32DrawingContext;
+typedef struct _GdkWin32DrawingContextClass  GdkWin32DrawingContextClass;
+
+struct _GdkWin32DrawingContext
+{
+  GdkDrawingContext parent_instance;
+};
+
+struct _GdkWin32DrawingContextClass
+{
+  GdkDrawingContextClass parent_instance;
+};
+
+GType gdk_win32_drawing_context_get_type (void) G_GNUC_CONST;
+
+G_END_DECLS
+
+#endif /* __GDK_WIN32_DRAWING_CONTEXT_H__ */
diff --git a/gdk/win32/gdkwindow-win32.c b/gdk/win32/gdkwindow-win32.c
index cddd9ef..84e0d7d 100644
--- a/gdk/win32/gdkwindow-win32.c
+++ b/gdk/win32/gdkwindow-win32.c
@@ -41,6 +41,7 @@
 #include "gdkwin32window.h"
 #include "gdkglcontext-win32.h"
 #include "gdkdisplay-win32.h"
+#include "gdkdrawingcontext-win32.h"
 
 #include <cairo-win32.h>
 #include <dwmapi.h>
@@ -6025,6 +6026,16 @@ _gdk_win32_window_get_unscaled_size (GdkWindow *window,
     *unscaled_height = impl->unscaled_height;
 }
 
+static GdkDrawingContext *
+gdk_win32_window_create_draw_context (GdkWindow            *window,
+                                      const cairo_region_t *region)
+{
+  return g_object_new (GDK_TYPE_WIN32_DRAWING_CONTEXT,
+                       "window", window,
+                       "clip", region,
+                       NULL);
+}
+
 static void
 gdk_window_impl_win32_class_init (GdkWindowImplWin32Class *klass)
 {
@@ -6114,6 +6125,7 @@ gdk_window_impl_win32_class_init (GdkWindowImplWin32Class *klass)
   impl_class->change_property = _gdk_win32_window_change_property;
   impl_class->delete_property = _gdk_win32_window_delete_property;
   impl_class->create_gl_context = _gdk_win32_window_create_gl_context;
+  impl_class->create_draw_context = _gdk_win32_window_create_draw_context;
   impl_class->invalidate_for_new_frame = _gdk_win32_window_invalidate_for_new_frame;
   impl_class->get_scale_factor = _gdk_win32_window_get_scale_factor;
   impl_class->get_unscaled_size = _gdk_win32_window_get_unscaled_size;
diff --git a/gdk/x11/Makefile.am b/gdk/x11/Makefile.am
index c233520..cd4d0e0 100644
--- a/gdk/x11/Makefile.am
+++ b/gdk/x11/Makefile.am
@@ -35,6 +35,8 @@ libgdk_x11_la_SOURCES =       \
        gdkdisplay-x11.c        \
        gdkdisplay-x11.h        \
        gdkdnd-x11.c            \
+       gdkdrawingcontext-x11.c \
+       gdkdrawingcontext-x11.h \
        gdkeventsource.c        \
        gdkeventsource.h        \
        gdkeventtranslator.c    \
diff --git a/gdk/x11/gdkdrawingcontext-x11.c b/gdk/x11/gdkdrawingcontext-x11.c
new file mode 100644
index 0000000..6941124
--- /dev/null
+++ b/gdk/x11/gdkdrawingcontext-x11.c
@@ -0,0 +1,33 @@
+/* GDK - The GIMP Drawing Kit
+ * Copyright 2016  Benjamin Otte <otte gnome org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include "gdkdrawingcontext-x11.h"
+
+G_DEFINE_TYPE (GdkX11DrawingContext, gdk_x11_drawing_context, GDK_TYPE_DRAWING_CONTEXT)
+
+static void
+gdk_x11_drawing_context_class_init (GdkX11DrawingContextClass *klass)
+{
+}
+
+static void
+gdk_x11_drawing_context_init (GdkX11DrawingContext *self)
+{
+}
+
diff --git a/gdk/x11/gdkdrawingcontext-x11.h b/gdk/x11/gdkdrawingcontext-x11.h
new file mode 100644
index 0000000..e2858fc
--- /dev/null
+++ b/gdk/x11/gdkdrawingcontext-x11.h
@@ -0,0 +1,48 @@
+/* GDK - The GIMP Drawing Kit
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GDK_X11_DRAWING_CONTEXT_H__
+#define __GDK_X11_DRAWING_CONTEXT_H__
+
+#include "gdk/gdkdrawingcontextprivate.h"
+
+G_BEGIN_DECLS
+
+#define GDK_TYPE_X11_DRAWING_CONTEXT                (gdk_x11_drawing_context_get_type ())
+#define GDK_X11_DRAWING_CONTEXT(obj)                (G_TYPE_CHECK_INSTANCE_CAST ((obj), 
GDK_TYPE_X11_DRAWING_CONTEXT, GdkX11DrawingContext))
+#define GDK_IS_X11_DRAWING_CONTEXT(obj)             (G_TYPE_CHECK_INSTANCE_TYPE ((obj), 
GDK_TYPE_X11_DRAWING_CONTEXT))
+#define GDK_X11_DRAWING_CONTEXT_CLASS(klass)        (G_TYPE_CHECK_CLASS_CAST ((klass), 
GDK_TYPE_X11_DRAWING_CONTEXT, GdkX11DrawingContextClass))
+#define GDK_IS_X11_DRAWING_CONTEXT_CLASS(klass)     (G_TYPE_CHECK_CLASS_TYPE ((klass), 
GDK_TYPE_X11_DRAWING_CONTEXT))
+#define GDK_X11_DRAWING_CONTEXT_GET_CLASS(obj)      (G_TYPE_INSTANCE_GET_CLASS ((obj), 
GDK_TYPE_X11_DRAWING_CONTEXT, GdkX11DrawingContextClass))
+
+typedef struct _GdkX11DrawingContext       GdkX11DrawingContext;
+typedef struct _GdkX11DrawingContextClass  GdkX11DrawingContextClass;
+
+struct _GdkX11DrawingContext
+{
+  GdkDrawingContext parent_instance;
+};
+
+struct _GdkX11DrawingContextClass
+{
+  GdkDrawingContextClass parent_instance;
+};
+
+GType gdk_x11_drawing_context_get_type (void) G_GNUC_CONST;
+
+G_END_DECLS
+
+#endif /* __GDK_X11_DRAWING_CONTEXT_H__ */
diff --git a/gdk/x11/gdkwindow-x11.c b/gdk/x11/gdkwindow-x11.c
index b13e246..998d302 100644
--- a/gdk/x11/gdkwindow-x11.c
+++ b/gdk/x11/gdkwindow-x11.c
@@ -36,6 +36,7 @@
 #include "gdkasync.h"
 #include "gdkeventsource.h"
 #include "gdkdisplay-x11.h"
+#include "gdkdrawingcontext-x11.h"
 #include "gdkglcontext-x11.h"
 #include "gdkprivate-x11.h"
 #include "gdk-private.h"
@@ -210,6 +211,16 @@ gdk_x11_window_get_unscaled_size (GdkWindow *window,
     *unscaled_height = impl->unscaled_height;
 }
 
+static GdkDrawingContext *
+gdk_x11_window_create_draw_context (GdkWindow            *window,
+                                    const cairo_region_t *region)
+{
+  return g_object_new (GDK_TYPE_X11_DRAWING_CONTEXT,
+                       "window", window,
+                       "clip", region,
+                       NULL);
+}
+
 static void
 set_sync_counter(Display     *display,
                 XSyncCounter counter,
@@ -5409,5 +5420,6 @@ gdk_window_impl_x11_class_init (GdkWindowImplX11Class *klass)
   impl_class->show_window_menu = gdk_x11_window_show_window_menu;
   impl_class->create_gl_context = gdk_x11_window_create_gl_context;
   impl_class->invalidate_for_new_frame = gdk_x11_window_invalidate_for_new_frame;
+  impl_class->create_draw_context = gdk_x11_window_create_draw_context;
   impl_class->get_unscaled_size = gdk_x11_window_get_unscaled_size;
 }
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