From c797cd43680b525ea771dc226ca353078c5c56f1 Mon Sep 17 00:00:00 2001
From: "sadrul@chromium.org"
 <sadrul@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>
Date: Tue, 15 Mar 2011 02:18:36 +0000
Subject: Start working on compositor tree painting.

As a first step, maintain a skia canvas in each transformed view. Each
transformed view will acquire a texture-id for the canvas it owns. Whenever the
canvas is updated, it will trigger a refresh in the compositor tree.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/6594125

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@78149 0039d316-1c4b-4281-b951-d872f2087c98
---
 views/view.h | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

(limited to 'views/view.h')

diff --git a/views/view.h b/views/view.h
index 8117ab2..e09f0bee 100644
--- a/views/view.h
+++ b/views/view.h
@@ -34,8 +34,11 @@ class Path;
 
 namespace ui {
 struct AccessibleViewState;
+class Compositor;
 class ThemeProvider;
 class Transform;
+
+typedef unsigned int TextureID;
 }
 using ui::ThemeProvider;
 
@@ -562,6 +565,11 @@ class View : public AcceleratorTarget {
     flip_canvas_on_paint_for_rtl_ui_ = enable;
   }
 
+  // Accelerated painting ------------------------------------------------------
+
+  // Enable/Disable accelerated compositing.
+  static void set_use_acceleration_when_possible(bool use);
+
   // Input ---------------------------------------------------------------------
   // The points (and mouse locations) in the following functions are in the
   // view's coordinates, except for a RootView.
@@ -1016,6 +1024,11 @@ class View : public AcceleratorTarget {
   // relevant contents.
   virtual void OnPaintFocusBorder(gfx::Canvas* canvas);
 
+  // Accelerated painting ------------------------------------------------------
+
+  // Performs accelerated painting using the compositor.
+  virtual void PaintComposite(ui::Compositor* compositor);
+
   // Input ---------------------------------------------------------------------
 
   // Called by HitTest to see if this View has a custom hit test mask. If the
@@ -1333,6 +1346,16 @@ class View : public AcceleratorTarget {
   // right-to-left locales for this View.
   bool flip_canvas_on_paint_for_rtl_ui_;
 
+  // Accelerated painting ------------------------------------------------------
+
+  // Each transformed view will maintain its own canvas.
+  scoped_ptr<gfx::Canvas> canvas_;
+
+  // Texture ID used for accelerated painting.
+  // TODO(sadrul): This will eventually be replaced by an abstract texture
+  //               object.
+  ui::TextureID texture_id_;
+
   // Accelerators --------------------------------------------------------------
 
   // true if when we were added to hierarchy we were without focus manager
-- 
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