| // 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 |