[gtk+/wip/ebassi/gsk-renderer: 12/83] gtk: Add a GskRenderer to GtkWindow

[Emmanuele Bassi <ebassi src gnome org>]

commit e10bbc691308f9e0a680483ddd556a2f574ff8b2
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Thu Jun 23 17:34:38 2016 +0100

    gtk: Add a GskRenderer to GtkWindow
    
    Each top-level should have its own GskRenderer, to be used when drawing
    the render node tree.

 gtk/gtkwindow.c        |   49 ++++++++++++++++++++++++++++++++++++++++++++++++
 gtk/gtkwindowprivate.h |    2 +
 2 files changed, 51 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index 4c9346a..6e7c14a 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -30,6 +30,7 @@
 #include <stdlib.h>
 #include <errno.h>
 #include <limits.h>
+#include <graphene.h>
 
 #include "gtkprivate.h"
 #include "gtkwindowprivate.h"
@@ -271,6 +272,8 @@ struct _GtkWindowPrivate
   GdkWindow *hardcoded_window;
 
   GtkCssNode *decoration_node;
+
+  GskRenderer *renderer;
 };
 
 static const GtkTargetEntry dnd_dest_targets [] = {
@@ -7157,6 +7160,16 @@ gtk_window_realize (GtkWidget *widget)
 
   _gtk_widget_get_allocation (widget, &allocation);
 
+  if (priv->renderer == NULL)
+    {
+      graphene_rect_t viewport;
+
+      priv->renderer = gsk_renderer_get_for_display (gtk_widget_get_display (widget));
+
+      graphene_rect_init (&viewport, 0, 0, allocation.width, allocation.height);
+      gsk_renderer_set_viewport (priv->renderer, &viewport);
+    }
+
   if (gtk_widget_get_parent_window (widget))
     {
       gtk_container_set_default_resize_mode (GTK_CONTAINER (widget), GTK_RESIZE_PARENT);
@@ -7180,6 +7193,9 @@ gtk_window_realize (GtkWidget *widget)
       gtk_widget_register_window (widget, gdk_window);
       gtk_widget_set_realized (widget, TRUE);
 
+      gsk_renderer_set_window (priv->renderer, gdk_window);
+      gsk_renderer_realize (priv->renderer);
+
       return;
     }
 
@@ -7273,6 +7289,10 @@ gtk_window_realize (GtkWidget *widget)
   gtk_widget_register_window (widget, gdk_window);
   gtk_widget_set_realized (widget, TRUE);
 
+  gsk_renderer_set_window (priv->renderer, gdk_window);
+  gsk_renderer_set_use_alpha (priv->renderer, TRUE);
+  gsk_renderer_realize (priv->renderer);
+
   attributes.x = allocation.x;
   attributes.y = allocation.y;
   attributes.width = allocation.width;
@@ -7393,6 +7413,9 @@ gtk_window_realize (GtkWidget *widget)
     }
 
   check_scale_changed (window);
+
+  /* Renderer */
+  gsk_renderer_realize (priv->renderer);
 }
 
 static void
@@ -7420,6 +7443,9 @@ gtk_window_unrealize (GtkWidget *widget)
   GList *link;
   gint i;
 
+  if (priv->renderer != NULL)
+    gsk_renderer_unrealize (priv->renderer);
+
   /* On unrealize, we reset the size of the window such
    * that we will re-apply the default sizing stuff
    * next time we show the window.
@@ -7567,6 +7593,21 @@ _gtk_window_set_allocation (GtkWindow           *window,
   child_allocation.width = allocation->width;
   child_allocation.height = allocation->height;
 
+  if (priv->renderer != NULL)
+    {
+      graphene_rect_t viewport;
+      graphene_matrix_t projection;
+
+      graphene_rect_init (&viewport, 0, 0, allocation->width, allocation->height);
+      gsk_renderer_set_viewport (priv->renderer, &viewport);
+
+      graphene_matrix_init_ortho (&projection,
+                                  0, allocation->width,
+                                  0, allocation->height,
+                                  -1, 1);
+      gsk_renderer_set_projection (priv->renderer, &projection);
+    }
+
   get_shadow_width (window, &window_border);
 
   if (_gtk_widget_get_realized (widget))
@@ -12640,3 +12681,11 @@ void
 gtk_window_unexport_handle (GtkWindow *window)
 {
 }
+
+GskRenderer *
+gtk_window_get_renderer (GtkWindow *window)
+{
+  GtkWindowPrivate *priv = window->priv;
+
+  return priv->renderer;
+}
diff --git a/gtk/gtkwindowprivate.h b/gtk/gtkwindowprivate.h
index 5cb5a72..d9e1f79 100644
--- a/gtk/gtkwindowprivate.h
+++ b/gtk/gtkwindowprivate.h
@@ -146,6 +146,8 @@ gboolean      gtk_window_export_handle   (GtkWindow               *window,
                                           gpointer                 user_data);
 void          gtk_window_unexport_handle (GtkWindow               *window);
 
+GskRenderer *gtk_window_get_renderer (GtkWindow *window);
+
 G_END_DECLS
 
 #endif /* __GTK_WINDOW_PRIVATE_H__ */