1// Copyright (c) 2011 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef UI_GFX_BLIT_H_ 6#define UI_GFX_BLIT_H_ 7 8#include "ui/gfx/gfx_export.h" 9#include "ui/gfx/native_widget_types.h" 10 11class SkCanvas; 12 13namespace gfx { 14 15class Point; 16class Rect; 17class Vector2d; 18 19// Blits a rectangle from the source context into the destination context. 20GFX_EXPORT void BlitContextToContext(NativeDrawingContext dst_context, 21 const Rect& dst_rect, 22 NativeDrawingContext src_context, 23 const Point& src_origin); 24 25// Blits a rectangle from the source context into the destination canvas. 26GFX_EXPORT void BlitContextToCanvas(SkCanvas *dst_canvas, 27 const Rect& dst_rect, 28 NativeDrawingContext src_context, 29 const Point& src_origin); 30 31// Blits a rectangle from the source canvas into the destination context. 32GFX_EXPORT void BlitCanvasToContext(NativeDrawingContext dst_context, 33 const Rect& dst_rect, 34 SkCanvas *src_canvas, 35 const Point& src_origin); 36 37// Blits a rectangle from the source canvas into the destination canvas. 38GFX_EXPORT void BlitCanvasToCanvas(SkCanvas *dst_canvas, 39 const Rect& dst_rect, 40 SkCanvas *src_canvas, 41 const Point& src_origin); 42 43// Scrolls the given subset of the given canvas by the given offset. 44// The canvas should not have a clip or a transform applied, since platforms 45// may implement those operations differently. 46GFX_EXPORT void ScrollCanvas(SkCanvas* canvas, 47 const Rect& clip, 48 const Vector2d& offset); 49 50} // namespace gfx 51 52#endif // UI_GFX_BLIT_H_ 53