gecko-dev/gfx/2d/SourceSurfaceSkia.cpp

126 строки
2.7 KiB
C++
Исходник Обычный вид История

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2012-05-21 15:12:37 +04:00
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "Logging.h"
#include "SourceSurfaceSkia.h"
#include "skia/SkBitmap.h"
#include "skia/SkDevice.h"
#include "HelpersSkia.h"
#include "DrawTargetSkia.h"
namespace mozilla {
namespace gfx {
SourceSurfaceSkia::SourceSurfaceSkia()
: mDrawTarget(nullptr)
{
}
SourceSurfaceSkia::~SourceSurfaceSkia()
{
MarkIndependent();
}
IntSize
SourceSurfaceSkia::GetSize() const
{
return mSize;
}
SurfaceFormat
SourceSurfaceSkia::GetFormat() const
{
return mFormat;
}
bool
SourceSurfaceSkia::InitFromData(unsigned char* aData,
const IntSize &aSize,
int32_t aStride,
SurfaceFormat aFormat)
{
SkBitmap temp;
temp.setConfig(GfxFormatToSkiaConfig(aFormat), aSize.width, aSize.height, aStride);
temp.setPixels(aData);
if (!temp.copyTo(&mBitmap, GfxFormatToSkiaConfig(aFormat))) {
return false;
}
if (aFormat == FORMAT_B8G8R8X8) {
mBitmap.lockPixels();
// We have to manually set the A channel to be 255 as Skia doesn't understand BGRX
ConvertBGRXToBGRA(reinterpret_cast<unsigned char*>(mBitmap.getPixels()), aSize, aStride);
mBitmap.unlockPixels();
mBitmap.notifyPixelsChanged();
mBitmap.setIsOpaque(true);
}
mSize = aSize;
mFormat = aFormat;
mStride = aStride;
return true;
}
bool
SourceSurfaceSkia::InitWithBitmap(const SkBitmap& aBitmap,
SurfaceFormat aFormat,
DrawTargetSkia* aOwner)
{
mFormat = aFormat;
mSize = IntSize(aBitmap.width(), aBitmap.height());
if (aOwner) {
mBitmap = aBitmap;
mStride = aBitmap.rowBytes();
mDrawTarget = aOwner;
return true;
} else if (aBitmap.copyTo(&mBitmap, aBitmap.getConfig())) {
mStride = mBitmap.rowBytes();
return true;
}
return false;
}
unsigned char*
SourceSurfaceSkia::GetData()
{
mBitmap.lockPixels();
unsigned char *pixels = (unsigned char *)mBitmap.getPixels();
mBitmap.unlockPixels();
return pixels;
}
void
SourceSurfaceSkia::DrawTargetWillChange()
{
if (mDrawTarget) {
mDrawTarget = nullptr;
SkBitmap temp = mBitmap;
mBitmap.reset();
temp.copyTo(&mBitmap, temp.getConfig());
}
}
void
SourceSurfaceSkia::DrawTargetDestroyed()
{
mDrawTarget = nullptr;
}
void
SourceSurfaceSkia::MarkIndependent()
{
if (mDrawTarget) {
mDrawTarget->RemoveSnapshot(this);
mDrawTarget = nullptr;
}
}
}
}