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8715d55e01
This adds a DrawTargetOffset which is basically a simplified DrawTargetTiled that only supports one tile. It useful for situations where Cairo's device offset was used previously. This also replaces WebRender's use of DrawTargetTiled which was just trying to apply offset. MozReview-Commit-ID: I33PB6CnHh0 --HG-- extra : rebase_source : 9fa51a0180343231cfca41daa0e3fa53f1b7befe
213 lines
6.3 KiB
C++
213 lines
6.3 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 "DrawTargetOffset.h"
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#include "Logging.h"
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#include "PathHelpers.h"
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using namespace std;
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namespace mozilla {
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namespace gfx {
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DrawTargetOffset::DrawTargetOffset()
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{
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}
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bool
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DrawTargetOffset::Init(DrawTarget *aDrawTarget, IntPoint aOrigin)
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{
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mDrawTarget = aDrawTarget;
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mOrigin = aOrigin;
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mDrawTarget->SetTransform(Matrix::Translation(-mOrigin.x,
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-mOrigin.y));
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mFormat = mDrawTarget->GetFormat();
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SetPermitSubpixelAA(IsOpaque(mFormat));
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return true;
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}
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already_AddRefed<SourceSurface>
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DrawTargetOffset::Snapshot()
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{
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return mDrawTarget->Snapshot();
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}
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void
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DrawTargetOffset::DetachAllSnapshots()
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{}
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// Skip the mClippedOut check since this is only used for Flush() which
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// should happen even if we're clipped.
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#define OFFSET_COMMAND(command) \
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void \
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DrawTargetOffset::command() \
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{ \
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mDrawTarget->command(); \
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}
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#define OFFSET_COMMAND1(command, type1) \
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void \
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DrawTargetOffset::command(type1 arg1) \
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{ \
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mDrawTarget->command(arg1); \
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}
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#define OFFSET_COMMAND3(command, type1, type2, type3) \
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void \
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DrawTargetOffset::command(type1 arg1, type2 arg2, type3 arg3) \
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{ \
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mDrawTarget->command(arg1, arg2, arg3); \
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}
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#define OFFSET_COMMAND4(command, type1, type2, type3, type4) \
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void \
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DrawTargetOffset::command(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
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{ \
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mDrawTarget->command(arg1, arg2, arg3, arg4); \
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}
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#define OFFSET_COMMAND5(command, type1, type2, type3, type4, type5) \
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void \
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DrawTargetOffset::command(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
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{ \
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mDrawTarget->command(arg1, arg2, arg3, arg4, arg5); \
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}
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OFFSET_COMMAND(Flush)
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OFFSET_COMMAND1(ClearRect, const Rect&)
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OFFSET_COMMAND4(MaskSurface, const Pattern&, SourceSurface*, Point, const DrawOptions&)
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OFFSET_COMMAND4(FillGlyphs, ScaledFont*, const GlyphBuffer&, const Pattern&, const DrawOptions&)
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OFFSET_COMMAND3(Mask, const Pattern&, const Pattern&, const DrawOptions&)
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void
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DrawTargetOffset::DrawFilter(FilterNode* aNode, const Rect& aSourceRect, const Point& aDestPoint, const DrawOptions& aOptions)
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{
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auto clone = mTransform;
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bool invertible = clone.Invert();
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auto src = aSourceRect;
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if (invertible) {
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// Try to reduce the source rect so that it's not much bigger
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// than the draw target. The result is not minimal. Examples
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// are left as an exercise for the reader.
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auto destRect = Rect(mOrigin.x,
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mOrigin.y,
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mDrawTarget->GetSize().width,
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mDrawTarget->GetSize().height);
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auto dtBounds = clone.TransformBounds(destRect);
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src = aSourceRect.Intersect(dtBounds);
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}
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auto shift = src.TopLeft() - aSourceRect.TopLeft();
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mDrawTarget->DrawFilter(aNode, src, aDestPoint + shift, aOptions);
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}
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void
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DrawTargetOffset::PushClip(const Path* aPath)
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{
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mDrawTarget->PushClip(aPath);
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}
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void
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DrawTargetOffset::PushClipRect(const Rect& aRect)
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{
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mDrawTarget->PushClipRect(aRect);
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}
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void
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DrawTargetOffset::PopClip()
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{
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mDrawTarget->PopClip();
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}
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void
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DrawTargetOffset::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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IntPoint tileOrigin = mOrigin;
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// CopySurface ignores the transform, account for that here.
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mDrawTarget->CopySurface(aSurface, aSourceRect, aDestination - tileOrigin);
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}
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void
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DrawTargetOffset::SetTransform(const Matrix& aTransform)
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{
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Matrix mat = aTransform;
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mat.PostTranslate(Float(-mOrigin.x), Float(-mOrigin.y));
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mDrawTarget->SetTransform(mat);
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DrawTarget::SetTransform(aTransform);
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}
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void
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DrawTargetOffset::SetPermitSubpixelAA(bool aPermitSubpixelAA)
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{
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mDrawTarget->SetPermitSubpixelAA(aPermitSubpixelAA);
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}
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void
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DrawTargetOffset::DrawSurface(SourceSurface* aSurface, const Rect& aDest, const Rect& aSource, const DrawSurfaceOptions& aSurfaceOptions, const DrawOptions& aDrawOptions)
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{
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mDrawTarget->DrawSurface(aSurface, aDest, aSource, aSurfaceOptions, aDrawOptions);
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}
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void
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DrawTargetOffset::FillRect(const Rect& aRect, const Pattern& aPattern, const DrawOptions& aDrawOptions)
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{
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mDrawTarget->FillRect(aRect, aPattern, aDrawOptions);
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}
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void
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DrawTargetOffset::Stroke(const Path* aPath, const Pattern& aPattern, const StrokeOptions& aStrokeOptions, const DrawOptions& aDrawOptions)
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{
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mDrawTarget->Stroke(aPath, aPattern, aStrokeOptions, aDrawOptions);
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}
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void
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DrawTargetOffset::StrokeRect(const Rect& aRect, const Pattern& aPattern, const StrokeOptions &aStrokeOptions, const DrawOptions& aDrawOptions)
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{
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mDrawTarget->StrokeRect(aRect, aPattern, aStrokeOptions, aDrawOptions);
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}
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void
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DrawTargetOffset::StrokeLine(const Point& aStart, const Point& aEnd, const Pattern& aPattern, const StrokeOptions &aStrokeOptions, const DrawOptions& aDrawOptions)
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{
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mDrawTarget->StrokeLine(aStart, aEnd, aPattern, aStrokeOptions, aDrawOptions);
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}
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void
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DrawTargetOffset::Fill(const Path* aPath, const Pattern& aPattern, const DrawOptions& aDrawOptions)
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{
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mDrawTarget->Fill(aPath, aPattern, aDrawOptions);
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}
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void
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DrawTargetOffset::PushLayer(bool aOpaque, Float aOpacity, SourceSurface* aMask,
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const Matrix& aMaskTransform, const IntRect& aBounds,
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bool aCopyBackground)
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{
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IntRect bounds = aBounds;
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bounds.MoveBy(mOrigin);
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mDrawTarget->PushLayer(aOpaque, aOpacity, aMask, aMaskTransform, bounds, aCopyBackground);
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}
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void
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DrawTargetOffset::PushLayerWithBlend(bool aOpaque, 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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CompositionOp aOp)
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{
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IntRect bounds = aBounds;
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bounds.MoveBy(mOrigin);
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mDrawTarget->PushLayerWithBlend(aOpaque, aOpacity, aMask, aMaskTransform, bounds, aCopyBackground, aOp);
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}
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void
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DrawTargetOffset::PopLayer()
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{
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mDrawTarget->PopLayer();
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}
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} // namespace gfx
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} // namespace mozilla
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