1 files changed, 53 insertions, 0 deletions
diff --git a/ui/gfx/blit.h b/ui/gfx/blit.h
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+++ b/ui/gfx/blit.h
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+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef UI_GFX_BLIT_H_
+#define UI_GFX_BLIT_H_
+#pragma once
+
+#include "gfx/native_widget_types.h"
+
+namespace skia {
+class PlatformCanvas;
+}  // namespace skia
+
+namespace gfx {
+
+class Point;
+class Rect;
+
+// Blits a rectangle from the source context into the destination context.
+void BlitContextToContext(NativeDrawingContext dst_context,
+                          const Rect& dst_rect,
+                          NativeDrawingContext src_context,
+                          const Point& src_origin);
+
+// Blits a rectangle from the source context into the destination canvas.
+void BlitContextToCanvas(skia::PlatformCanvas *dst_canvas,
+                         const Rect& dst_rect,
+                         NativeDrawingContext src_context,
+                         const Point& src_origin);
+
+// Blits a rectangle from the source canvas into the destination context.
+void BlitCanvasToContext(NativeDrawingContext dst_context,
+                         const Rect& dst_rect,
+                         skia::PlatformCanvas *src_canvas,
+                         const Point& src_origin);
+
+// Blits a rectangle from the source canvas into the destination canvas.
+void BlitCanvasToCanvas(skia::PlatformCanvas *dst_canvas,
+                        const Rect& dst_rect,
+                        skia::PlatformCanvas *src_canvas,
+                        const Point& src_origin);
+
+// Scrolls the given subset of the given canvas by the given amount.
+// The canvas should not have a clip or a transform applied, since platforms
+// may implement those operations differently.
+void ScrollCanvas(skia::PlatformCanvas* canvas,
+                  const Rect& clip,
+                  const Point& amount);
+
+}  // namespace gfx
+
+#endif  // UI_GFX_BLIT_H_