mirror of
https://github.com/mozilla/gecko-dev.git
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423 lines
12 KiB
C++
423 lines
12 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 "DrawTargetCapture.h"
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#include "DrawCommand.h"
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#include "gfxPlatform.h"
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#include "SourceSurfaceCapture.h"
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namespace mozilla {
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namespace gfx {
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DrawTargetCaptureImpl::~DrawTargetCaptureImpl()
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{
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if (mSnapshot && !mSnapshot->hasOneRef()) {
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mSnapshot->DrawTargetWillDestroy();
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mSnapshot = nullptr;
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}
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}
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DrawTargetCaptureImpl::DrawTargetCaptureImpl(BackendType aBackend,
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const IntSize& aSize,
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SurfaceFormat aFormat)
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: mSize(aSize),
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mSnapshot(nullptr),
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mStride(0),
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mSurfaceAllocationSize(0)
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{
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RefPtr<DrawTarget> screenRefDT =
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gfxPlatform::GetPlatform()->ScreenReferenceDrawTarget();
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mFormat = aFormat;
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if (aBackend == screenRefDT->GetBackendType()) {
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mRefDT = screenRefDT;
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} else {
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// This situation can happen if a blur operation decides to
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// use an unaccelerated path even if the system backend is
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// Direct2D.
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//
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// We don't really want to encounter the reverse scenario:
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// we shouldn't pick an accelerated backend if the system
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// backend is skia.
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if (aBackend == BackendType::DIRECT2D1_1) {
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gfxWarning() << "Creating a RefDT in DrawTargetCapture.";
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}
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// Create a 1x1 size ref dt to create assets
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// If we have to snapshot, we'll just create the real DT
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IntSize size(1, 1);
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mRefDT = Factory::CreateDrawTarget(aBackend, size, mFormat);
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}
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}
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bool
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DrawTargetCaptureImpl::Init(const IntSize& aSize, DrawTarget* aRefDT)
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{
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if (!aRefDT) {
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return false;
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}
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mRefDT = aRefDT;
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mSize = aSize;
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mFormat = aRefDT->GetFormat();
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return true;
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}
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void
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DrawTargetCaptureImpl::InitForData(int32_t aStride, size_t aSurfaceAllocationSize)
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{
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mStride = aStride;
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mSurfaceAllocationSize = aSurfaceAllocationSize;
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}
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already_AddRefed<SourceSurface>
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DrawTargetCaptureImpl::Snapshot()
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{
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if (!mSnapshot) {
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mSnapshot = new SourceSurfaceCapture(this);
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}
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RefPtr<SourceSurface> surface = mSnapshot;
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return surface.forget();
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}
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already_AddRefed<SourceSurface>
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DrawTargetCaptureImpl::IntoLuminanceSource(LuminanceType aLuminanceType,
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float aOpacity)
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{
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RefPtr<SourceSurface> surface = new SourceSurfaceCapture(this, aLuminanceType, aOpacity);
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return surface.forget();
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}
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already_AddRefed<SourceSurface>
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DrawTargetCaptureImpl::OptimizeSourceSurface(SourceSurface *aSurface) const
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{
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// If the surface is a recording, make sure it gets resolved on the paint thread.
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if (aSurface->GetType() == SurfaceType::CAPTURE) {
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RefPtr<SourceSurface> surface = aSurface;
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return surface.forget();
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}
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return mRefDT->OptimizeSourceSurface(aSurface);
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}
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void
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DrawTargetCaptureImpl::DetachAllSnapshots()
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{
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MarkChanged();
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}
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#define AppendCommand(arg) new (AppendToCommandList<arg>()) arg
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void
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DrawTargetCaptureImpl::SetPermitSubpixelAA(bool aPermitSubpixelAA)
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{
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AppendCommand(SetPermitSubpixelAACommand)(aPermitSubpixelAA);
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// Have to update mPermitSubpixelAA for this DT
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// because some code paths query the current setting
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// to determine subpixel AA eligibility.
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DrawTarget::SetPermitSubpixelAA(aPermitSubpixelAA);
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}
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void
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DrawTargetCaptureImpl::DrawSurface(SourceSurface *aSurface,
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const Rect &aDest,
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const Rect &aSource,
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const DrawSurfaceOptions &aSurfOptions,
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const DrawOptions &aOptions)
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{
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aSurface->GuaranteePersistance();
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AppendCommand(DrawSurfaceCommand)(aSurface, aDest, aSource, aSurfOptions, aOptions);
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}
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void
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DrawTargetCaptureImpl::DrawSurfaceWithShadow(SourceSurface *aSurface,
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const Point &aDest,
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const Color &aColor,
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const Point &aOffset,
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Float aSigma,
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CompositionOp aOperator)
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{
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aSurface->GuaranteePersistance();
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AppendCommand(DrawSurfaceWithShadowCommand)(aSurface, aDest, aColor, aOffset, aSigma, aOperator);
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}
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void
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DrawTargetCaptureImpl::DrawFilter(FilterNode *aNode,
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const Rect &aSourceRect,
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const Point &aDestPoint,
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const DrawOptions &aOptions)
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{
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// @todo XXX - this won't work properly long term yet due to filternodes not
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// being immutable.
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AppendCommand(DrawFilterCommand)(aNode, aSourceRect, aDestPoint, aOptions);
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}
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void
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DrawTargetCaptureImpl::ClearRect(const Rect &aRect)
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{
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AppendCommand(ClearRectCommand)(aRect);
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}
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void
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DrawTargetCaptureImpl::MaskSurface(const Pattern &aSource,
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SourceSurface *aMask,
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Point aOffset,
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const DrawOptions &aOptions)
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{
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aMask->GuaranteePersistance();
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AppendCommand(MaskSurfaceCommand)(aSource, aMask, aOffset, aOptions);
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}
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void
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DrawTargetCaptureImpl::CopySurface(SourceSurface* aSurface,
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const IntRect& aSourceRect,
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const IntPoint& aDestination)
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{
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aSurface->GuaranteePersistance();
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AppendCommand(CopySurfaceCommand)(aSurface, aSourceRect, aDestination);
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}
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void
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DrawTargetCaptureImpl::FillRect(const Rect& aRect,
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const Pattern& aPattern,
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const DrawOptions& aOptions)
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{
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AppendCommand(FillRectCommand)(aRect, aPattern, aOptions);
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}
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void
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DrawTargetCaptureImpl::StrokeRect(const Rect& aRect,
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const Pattern& aPattern,
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const StrokeOptions& aStrokeOptions,
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const DrawOptions& aOptions)
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{
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AppendCommand(StrokeRectCommand)(aRect, aPattern, aStrokeOptions, aOptions);
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}
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void
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DrawTargetCaptureImpl::StrokeLine(const Point& aStart,
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const Point& aEnd,
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const Pattern& aPattern,
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const StrokeOptions& aStrokeOptions,
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const DrawOptions& aOptions)
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{
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AppendCommand(StrokeLineCommand)(aStart, aEnd, aPattern, aStrokeOptions, aOptions);
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}
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void
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DrawTargetCaptureImpl::Stroke(const Path* aPath,
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const Pattern& aPattern,
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const StrokeOptions& aStrokeOptions,
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const DrawOptions& aOptions)
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{
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AppendCommand(StrokeCommand)(aPath, aPattern, aStrokeOptions, aOptions);
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}
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void
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DrawTargetCaptureImpl::Fill(const Path* aPath,
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const Pattern& aPattern,
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const DrawOptions& aOptions)
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{
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AppendCommand(FillCommand)(aPath, aPattern, aOptions);
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}
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void
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DrawTargetCaptureImpl::FillGlyphs(ScaledFont* aFont,
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const GlyphBuffer& aBuffer,
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const Pattern& aPattern,
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const DrawOptions& aOptions)
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{
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AppendCommand(FillGlyphsCommand)(aFont, aBuffer, aPattern, aOptions);
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}
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void DrawTargetCaptureImpl::StrokeGlyphs(ScaledFont* aFont,
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const GlyphBuffer& aBuffer,
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const Pattern& aPattern,
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const StrokeOptions& aStrokeOptions,
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const DrawOptions& aOptions)
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{
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AppendCommand(StrokeGlyphsCommand)(aFont, aBuffer, aPattern, aStrokeOptions, aOptions);
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}
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void
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DrawTargetCaptureImpl::Mask(const Pattern &aSource,
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const Pattern &aMask,
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const DrawOptions &aOptions)
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{
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AppendCommand(MaskCommand)(aSource, aMask, aOptions);
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}
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void
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DrawTargetCaptureImpl::PushClip(const Path* aPath)
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{
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AppendCommand(PushClipCommand)(aPath);
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}
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void
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DrawTargetCaptureImpl::PushClipRect(const Rect& aRect)
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{
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AppendCommand(PushClipRectCommand)(aRect);
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}
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void
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DrawTargetCaptureImpl::PushLayer(bool aOpaque,
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Float aOpacity,
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SourceSurface* aMask,
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const Matrix& aMaskTransform,
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const IntRect& aBounds,
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bool aCopyBackground)
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{
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// Have to update mPermitSubpixelAA for this DT
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// because some code paths query the current setting
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// to determine subpixel AA eligibility.
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PushedLayer layer(GetPermitSubpixelAA());
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mPushedLayers.push_back(layer);
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DrawTarget::SetPermitSubpixelAA(aOpaque);
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AppendCommand(PushLayerCommand)(aOpaque,
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aOpacity,
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aMask,
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aMaskTransform,
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aBounds,
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aCopyBackground);
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}
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void
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DrawTargetCaptureImpl::PopLayer()
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{
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MOZ_ASSERT(mPushedLayers.size());
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DrawTarget::SetPermitSubpixelAA(mPushedLayers.back().mOldPermitSubpixelAA);
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mPushedLayers.pop_back();
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AppendCommand(PopLayerCommand)();
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}
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void
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DrawTargetCaptureImpl::PopClip()
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{
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AppendCommand(PopClipCommand)();
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}
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void
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DrawTargetCaptureImpl::SetTransform(const Matrix& aTransform)
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{
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AppendCommand(SetTransformCommand)(aTransform);
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// Have to update the transform for this DT
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// because some code paths query the current transform
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// to render specific things.
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DrawTarget::SetTransform(aTransform);
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}
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void
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DrawTargetCaptureImpl::Blur(const AlphaBoxBlur& aBlur)
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{
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// gfxAlphaBoxBlur should not use this if it takes the accelerated path.
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MOZ_ASSERT(GetBackendType() == BackendType::SKIA);
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AppendCommand(BlurCommand)(aBlur);
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}
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void
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DrawTargetCaptureImpl::ReplayToDrawTarget(DrawTarget* aDT, const Matrix& aTransform)
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{
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for (CaptureCommandList::iterator iter(mCommands); !iter.Done(); iter.Next()) {
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DrawingCommand* cmd = iter.Get();
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cmd->ExecuteOnDT(aDT, &aTransform);
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}
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}
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bool
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DrawTargetCaptureImpl::ContainsOnlyColoredGlyphs(RefPtr<ScaledFont>& aScaledFont,
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Color& aColor,
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std::vector<Glyph>& aGlyphs)
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{
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bool result = false;
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for (CaptureCommandList::iterator iter(mCommands); !iter.Done(); iter.Next()) {
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DrawingCommand* command = iter.Get();
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if (command->GetType() != CommandType::FILLGLYPHS &&
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command->GetType() != CommandType::SETTRANSFORM) {
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return false;
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}
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if (command->GetType() == CommandType::SETTRANSFORM) {
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SetTransformCommand* transform = static_cast<SetTransformCommand*>(command);
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if (transform->mTransform != Matrix()) {
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return false;
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}
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continue;
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}
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FillGlyphsCommand* fillGlyphs = static_cast<FillGlyphsCommand*>(command);
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if (aScaledFont && fillGlyphs->mFont != aScaledFont) {
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return false;
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}
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aScaledFont = fillGlyphs->mFont;
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Pattern& pat = fillGlyphs->mPattern;
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if (pat.GetType() != PatternType::COLOR) {
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return false;
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}
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ColorPattern* colorPat = static_cast<ColorPattern*>(&pat);
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if (aColor != Color() && colorPat->mColor != aColor) {
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return false;
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}
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aColor = colorPat->mColor;
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if (fillGlyphs->mOptions.mCompositionOp != CompositionOp::OP_OVER ||
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fillGlyphs->mOptions.mAlpha != 1.0f) {
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return false;
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}
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//TODO: Deal with AA on the DrawOptions
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aGlyphs.insert(aGlyphs.end(),
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fillGlyphs->mGlyphs.begin(),
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fillGlyphs->mGlyphs.end());
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result = true;
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}
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return result;
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}
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void
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DrawTargetCaptureImpl::MarkChanged()
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{
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if (!mSnapshot) {
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return;
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}
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if (mSnapshot->hasOneRef()) {
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mSnapshot = nullptr;
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return;
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}
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mSnapshot->DrawTargetWillChange();
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mSnapshot = nullptr;
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}
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already_AddRefed<DrawTarget>
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DrawTargetCaptureImpl::CreateSimilarDrawTarget(const IntSize &aSize, SurfaceFormat aFormat) const
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{
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return MakeAndAddRef<DrawTargetCaptureImpl>(GetBackendType(), aSize, aFormat);
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}
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RefPtr<DrawTarget>
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DrawTargetCaptureImpl::CreateSimilarRasterTarget(const IntSize& aSize, SurfaceFormat aFormat) const
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{
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MOZ_ASSERT(!mRefDT->IsCaptureDT());
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return mRefDT->CreateSimilarDrawTarget(aSize, aFormat);
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}
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} // namespace gfx
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} // namespace mozilla
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