| // Copyright (c) 2012 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. |
| |
| #include "base/basictypes.h" |
| #include "base/compiler_specific.h" |
| #include "ui/gfx/canvas.h" |
| #include "ui/gfx/canvas_skia_paint.h" |
| #include "ui/gfx/rect.h" |
| |
| namespace gfx { |
| |
| CanvasSkiaPaint::CanvasSkiaPaint(HWND hwnd, HDC dc, const PAINTSTRUCT& ps) |
| : hwnd_(hwnd), |
| paint_dc_(dc) { |
| memset(&ps_, 0, sizeof(ps_)); |
| ps_.rcPaint.left = ps.rcPaint.left; |
| ps_.rcPaint.right = ps.rcPaint.right; |
| ps_.rcPaint.top = ps.rcPaint.top; |
| ps_.rcPaint.bottom = ps.rcPaint.bottom; |
| Init(true); |
| } |
| |
| CanvasSkiaPaint::CanvasSkiaPaint(HDC dc, bool opaque, int x, int y, |
| int w, int h) |
| : hwnd_(NULL), |
| paint_dc_(dc) { |
| memset(&ps_, 0, sizeof(ps_)); |
| ps_.rcPaint.left = x; |
| ps_.rcPaint.right = x + w; |
| ps_.rcPaint.top = y; |
| ps_.rcPaint.bottom = y + h; |
| Init(opaque); |
| } |
| |
| CanvasSkiaPaint::~CanvasSkiaPaint() { |
| if (!is_empty()) { |
| skia::PlatformCanvas* canvas = platform_canvas(); |
| canvas->restoreToCount(1); |
| // Commit the drawing to the screen |
| skia::DrawToNativeContext(canvas, paint_dc_, ps_.rcPaint.left, |
| ps_.rcPaint.top, NULL); |
| } |
| } |
| |
| gfx::Rect CanvasSkiaPaint::GetInvalidRect() const { |
| return gfx::Rect(paint_struct().rcPaint); |
| } |
| |
| void CanvasSkiaPaint::Init(bool opaque) { |
| // FIXME(brettw) for ClearType, we probably want to expand the bounds of |
| // painting by one pixel so that the boundaries will be correct (ClearType |
| // text can depend on the adjacent pixel). Then we would paint just the |
| // inset pixels to the screen. |
| const int width = ps_.rcPaint.right - ps_.rcPaint.left; |
| const int height = ps_.rcPaint.bottom - ps_.rcPaint.top; |
| |
| RecreateBackingCanvas(gfx::Size(width, height), |
| gfx::win::GetDeviceScaleFactor(), |
| opaque); |
| skia::PlatformCanvas* canvas = platform_canvas(); |
| |
| canvas->clear(SkColorSetARGB(0, 0, 0, 0)); |
| |
| // This will bring the canvas into the screen coordinate system for the |
| // dirty rect |
| canvas->translate( |
| -ps_.rcPaint.left / gfx::win::GetDeviceScaleFactor(), |
| -ps_.rcPaint.top / gfx::win::GetDeviceScaleFactor()); |
| } |
| |
| } // namespace gfx |