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// Copyright (c) 2006-2008 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/gfx/platform_canvas_win.h"
#include "base/gfx/bitmap_platform_device_win.h"
#include "base/logging.h"
#ifdef ARCH_CPU_64_BITS
#error This code does not work on x64. Please make sure all the base unit tests\
pass before doing any real work.
#endif
namespace gfx {
PlatformCanvasWin::PlatformCanvasWin() : SkCanvas() {
}
PlatformCanvasWin::PlatformCanvasWin(int width, int height, bool is_opaque)
: SkCanvas() {
initialize(width, height, is_opaque, NULL);
}
PlatformCanvasWin::PlatformCanvasWin(int width,
int height,
bool is_opaque,
HANDLE shared_section)
: SkCanvas() {
initialize(width, height, is_opaque, shared_section);
}
PlatformCanvasWin::~PlatformCanvasWin() {
}
void PlatformCanvasWin::initialize(int width,
int height,
bool is_opaque,
HANDLE shared_section) {
SkDevice* device =
createPlatformDevice(width, height, is_opaque, shared_section);
setDevice(device);
device->unref(); // was created with refcount 1, and setDevice also refs
}
HDC PlatformCanvasWin::beginPlatformPaint() {
return getTopPlatformDevice().getBitmapDC();
}
void PlatformCanvasWin::endPlatformPaint() {
// we don't clear the DC here since it will be likely to be used again
// flushing will be done in onAccessBitmap
}
PlatformDeviceWin& PlatformCanvasWin::getTopPlatformDevice() const {
// All of our devices should be our special PlatformDevice.
SkCanvas::LayerIter iter(const_cast<PlatformCanvasWin*>(this), false);
return *static_cast<PlatformDeviceWin*>(iter.device());
}
SkDevice* PlatformCanvasWin::createDevice(SkBitmap::Config config,
int width,
int height,
bool is_opaque, bool isForLayer) {
DCHECK(config == SkBitmap::kARGB_8888_Config);
return createPlatformDevice(width, height, is_opaque, NULL);
}
SkDevice* PlatformCanvasWin::createPlatformDevice(int width,
int height,
bool is_opaque,
HANDLE shared_section) {
HDC screen_dc = GetDC(NULL);
SkDevice* device = BitmapPlatformDeviceWin::create(screen_dc, width, height,
is_opaque, shared_section);
ReleaseDC(NULL, screen_dc);
return device;
}
SkDevice* PlatformCanvasWin::setBitmapDevice(const SkBitmap&) {
NOTREACHED();
return NULL;
}
} // namespace gfx
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