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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "base/gfx/platform_canvas.h"
#include "base/gfx/bitmap_platform_device.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 {
PlatformCanvas::PlatformCanvas() : SkCanvas() {
}
PlatformCanvas::PlatformCanvas(int width, int height, bool is_opaque)
: SkCanvas() {
initialize(width, height, is_opaque, NULL);
}
PlatformCanvas::PlatformCanvas(int width,
int height,
bool is_opaque,
HANDLE shared_section)
: SkCanvas() {
initialize(width, height, is_opaque, shared_section);
}
PlatformCanvas::~PlatformCanvas() {
}
void PlatformCanvas::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 PlatformCanvas::beginPlatformPaint() {
return getTopPlatformDevice().getBitmapDC();
}
void PlatformCanvas::endPlatformPaint() {
// we don't clear the DC here since it will be likely to be used again
// flushing will be done in onAccessBitmap
}
PlatformDevice& PlatformCanvas::getTopPlatformDevice() const {
// All of our devices should be our special PlatformDevice.
SkCanvas::LayerIter iter(const_cast<PlatformCanvas*>(this), false);
return *static_cast<PlatformDevice*>(iter.device());
}
SkDevice* PlatformCanvas::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* PlatformCanvas::createPlatformDevice(int width,
int height,
bool is_opaque,
HANDLE shared_section) {
HDC screen_dc = GetDC(NULL);
SkDevice* device = BitmapPlatformDevice::create(screen_dc, width, height,
is_opaque, shared_section);
ReleaseDC(NULL, screen_dc);
return device;
}
SkDevice* PlatformCanvas::setBitmapDevice(const SkBitmap&) {
NOTREACHED();
return NULL;
}
} // namespace gfx
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