blob: f3c97eb9bc9544bc0e6c19e9f99c92d0aaabf74d [file] [log] [blame]
// 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)
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(),
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