| // Copyright 2013 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 "skia/ext/bitmap_platform_device_skia.h" |
| #include "skia/ext/platform_canvas.h" |
| |
| namespace skia { |
| |
| BitmapPlatformDevice* BitmapPlatformDevice::Create(int width, int height, |
| bool is_opaque) { |
| SkBitmap bitmap; |
| if (bitmap.tryAllocN32Pixels(width, height, is_opaque)) { |
| // Follow the logic in SkCanvas::createDevice(), initialize the bitmap if it |
| // is not opaque. |
| if (!is_opaque) |
| bitmap.eraseARGB(0, 0, 0, 0); |
| return new BitmapPlatformDevice(bitmap); |
| } |
| return NULL; |
| } |
| |
| BitmapPlatformDevice* BitmapPlatformDevice::Create(int width, int height, |
| bool is_opaque, |
| uint8_t* data) { |
| SkBitmap bitmap; |
| bitmap.setInfo(SkImageInfo::MakeN32(width, height, |
| is_opaque ? kOpaque_SkAlphaType : kPremul_SkAlphaType)); |
| if (data) |
| bitmap.setPixels(data); |
| else if (!bitmap.tryAllocPixels()) |
| return NULL; |
| |
| return new BitmapPlatformDevice(bitmap); |
| } |
| |
| BitmapPlatformDevice::BitmapPlatformDevice(const SkBitmap& bitmap) |
| : SkBitmapDevice(bitmap) { |
| SetPlatformDevice(this, this); |
| } |
| |
| BitmapPlatformDevice::~BitmapPlatformDevice() { |
| } |
| |
| SkBaseDevice* BitmapPlatformDevice::onCreateDevice(const CreateInfo& info, |
| const SkPaint*) { |
| SkASSERT(info.fInfo.colorType() == kN32_SkColorType); |
| return BitmapPlatformDevice::Create(info.fInfo.width(), info.fInfo.height(), |
| info.fInfo.isOpaque()); |
| } |
| |
| PlatformSurface BitmapPlatformDevice::BeginPlatformPaint() { |
| // TODO(zhenghao): What should we return? The ptr to the address of the |
| // pixels? Maybe this won't be called at all. |
| return accessBitmap(true).getPixels(); |
| } |
| |
| // PlatformCanvas impl |
| |
| SkCanvas* CreatePlatformCanvas(int width, int height, bool is_opaque, |
| uint8_t* data, OnFailureType failureType) { |
| skia::RefPtr<SkBaseDevice> dev = skia::AdoptRef( |
| BitmapPlatformDevice::Create(width, height, is_opaque, data)); |
| return CreateCanvas(dev, failureType); |
| } |
| |
| } // namespace skia |