зеркало из https://github.com/mozilla/gecko-dev.git
161 строка
3.9 KiB
C++
161 строка
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "Logging.h"
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#include "SourceSurfaceSkia.h"
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#include "skia/include/core/SkBitmap.h"
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#include "skia/include/core/SkDevice.h"
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#include "HelpersSkia.h"
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#include "DrawTargetSkia.h"
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#include "DataSurfaceHelpers.h"
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#ifdef USE_SKIA_GPU
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#include "skia/include/gpu/SkGrPixelRef.h"
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#endif
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namespace mozilla {
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namespace gfx {
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SourceSurfaceSkia::SourceSurfaceSkia()
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: mDrawTarget(nullptr), mLocked(false)
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{
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}
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SourceSurfaceSkia::~SourceSurfaceSkia()
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{
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MaybeUnlock();
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if (mDrawTarget) {
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mDrawTarget->SnapshotDestroyed();
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mDrawTarget = nullptr;
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}
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}
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IntSize
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SourceSurfaceSkia::GetSize() const
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{
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return mSize;
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}
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SurfaceFormat
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SourceSurfaceSkia::GetFormat() const
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{
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return mFormat;
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}
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bool
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SourceSurfaceSkia::InitFromCanvas(SkCanvas* aCanvas,
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SurfaceFormat aFormat,
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DrawTargetSkia* aOwner)
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{
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SkISize size = aCanvas->getDeviceSize();
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mBitmap = (SkBitmap)aCanvas->getDevice()->accessBitmap(false);
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mFormat = aFormat;
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mSize = IntSize(size.fWidth, size.fHeight);
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mStride = mBitmap.rowBytes();
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mDrawTarget = aOwner;
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return true;
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}
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bool
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SourceSurfaceSkia::InitFromData(unsigned char* aData,
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const IntSize &aSize,
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int32_t aStride,
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SurfaceFormat aFormat)
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{
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SkBitmap temp;
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SkAlphaType alphaType = (aFormat == SurfaceFormat::B8G8R8X8) ?
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kOpaque_SkAlphaType : kPremul_SkAlphaType;
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SkImageInfo info = SkImageInfo::Make(aSize.width,
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aSize.height,
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GfxFormatToSkiaColorType(aFormat),
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alphaType);
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temp.setInfo(info, aStride);
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temp.setPixels(aData);
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if (!temp.copyTo(&mBitmap, GfxFormatToSkiaColorType(aFormat))) {
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return false;
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}
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if (aFormat == SurfaceFormat::B8G8R8X8) {
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mBitmap.setAlphaType(kIgnore_SkAlphaType);
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}
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mSize = aSize;
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mFormat = aFormat;
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mStride = mBitmap.rowBytes();
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return true;
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}
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bool
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SourceSurfaceSkia::InitFromTexture(DrawTargetSkia* aOwner,
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unsigned int aTexture,
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const IntSize &aSize,
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SurfaceFormat aFormat)
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{
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MOZ_ASSERT(aOwner, "null GrContext");
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#ifdef USE_SKIA_GPU
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GrBackendTextureDesc skiaTexGlue;
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mSize.width = skiaTexGlue.fWidth = aSize.width;
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mSize.height = skiaTexGlue.fHeight = aSize.height;
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skiaTexGlue.fFlags = kNone_GrBackendTextureFlag;
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skiaTexGlue.fOrigin = kBottomLeft_GrSurfaceOrigin;
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skiaTexGlue.fConfig = GfxFormatToGrConfig(aFormat);
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skiaTexGlue.fSampleCnt = 0;
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skiaTexGlue.fTextureHandle = aTexture;
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GrTexture *skiaTexture = aOwner->mGrContext->wrapBackendTexture(skiaTexGlue);
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SkImageInfo imgInfo = SkImageInfo::Make(aSize.width, aSize.height, GfxFormatToSkiaColorType(aFormat), kOpaque_SkAlphaType);
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SkGrPixelRef *texRef = new SkGrPixelRef(imgInfo, skiaTexture, false);
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mBitmap.setInfo(imgInfo, aSize.width*aSize.height*4);
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mBitmap.setPixelRef(texRef);
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#endif
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mDrawTarget = aOwner;
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return true;
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}
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unsigned char*
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SourceSurfaceSkia::GetData()
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{
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if (!mLocked) {
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mBitmap.lockPixels();
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mLocked = true;
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}
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unsigned char *pixels = (unsigned char *)mBitmap.getPixels();
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return pixels;
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}
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void
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SourceSurfaceSkia::DrawTargetWillChange()
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{
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if (mDrawTarget) {
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MaybeUnlock();
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mDrawTarget = nullptr;
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SkBitmap temp = mBitmap;
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mBitmap.reset();
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temp.copyTo(&mBitmap, temp.colorType());
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}
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}
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void
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SourceSurfaceSkia::MaybeUnlock()
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{
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if (mLocked) {
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mBitmap.unlockPixels();
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mLocked = false;
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}
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}
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} // namespace gfx
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} // namespace mozilla
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