mozilla
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gecko-dev
зеркало из https://github.com/mozilla/gecko-dev.git
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gecko-dev/gfx/2d/DrawTargetTiled.cpp

364 строки
13 KiB
C++
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "DrawTargetTiled.h"
#include "Logging.h"
#include "PathHelpers.h"
using namespace std;
namespace mozilla {
namespace gfx {
DrawTargetTiled::DrawTargetTiled()
{
}
bool
DrawTargetTiled::Init(const TileSet& aTiles)
{
if (!aTiles.mTileCount) {
return false;
}
mTiles.reserve(aTiles.mTileCount);
for (size_t i = 0; i < aTiles.mTileCount; ++i) {
mTiles.push_back(TileInternal(aTiles.mTiles[i]));
if (!aTiles.mTiles[i].mDrawTarget) {
return false;
}
if (mTiles[0].mDrawTarget->GetFormat() != mTiles.back().mDrawTarget->GetFormat() ||
mTiles[0].mDrawTarget->GetBackendType() != mTiles.back().mDrawTarget->GetBackendType()) {
return false;
}
uint32_t newXMost = max(mRect.XMost(),
mTiles[i].mTileOrigin.x + mTiles[i].mDrawTarget->GetSize().width);
uint32_t newYMost = max(mRect.YMost(),
mTiles[i].mTileOrigin.y + mTiles[i].mDrawTarget->GetSize().height);
mRect.x = min(mRect.x, mTiles[i].mTileOrigin.x);
mRect.y = min(mRect.y, mTiles[i].mTileOrigin.y);
mRect.width = newXMost - mRect.x;
mRect.height = newYMost - mRect.y;
mTiles[i].mDrawTarget->SetTransform(Matrix::Translation(-mTiles[i].mTileOrigin.x,
-mTiles[i].mTileOrigin.y));
}
mFormat = mTiles[0].mDrawTarget->GetFormat();
SetPermitSubpixelAA(IsOpaque(mFormat));
return true;
}
already_AddRefed<SourceSurface>
DrawTargetTiled::Snapshot()
{
return MakeAndAddRef<SnapshotTiled>(mTiles, mRect);
}
void
DrawTargetTiled::DetachAllSnapshots()
{}
// Skip the mClippedOut check since this is only used for Flush() which
// should happen even if we're clipped.
#define TILED_COMMAND(command) \
void \
DrawTargetTiled::command() \
{ \
for (size_t i = 0; i < mTiles.size(); i++) { \
mTiles[i].mDrawTarget->command(); \
} \
}
#define TILED_COMMAND1(command, type1) \
void \
DrawTargetTiled::command(type1 arg1) \
{ \
for (size_t i = 0; i < mTiles.size(); i++) { \
if (!mTiles[i].mClippedOut) \
mTiles[i].mDrawTarget->command(arg1); \
} \
}
#define TILED_COMMAND3(command, type1, type2, type3) \
void \
DrawTargetTiled::command(type1 arg1, type2 arg2, type3 arg3) \
{ \
for (size_t i = 0; i < mTiles.size(); i++) { \
if (!mTiles[i].mClippedOut) \
mTiles[i].mDrawTarget->command(arg1, arg2, arg3); \
} \
}
#define TILED_COMMAND4(command, type1, type2, type3, type4) \
void \
DrawTargetTiled::command(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
{ \
for (size_t i = 0; i < mTiles.size(); i++) { \
if (!mTiles[i].mClippedOut) \
mTiles[i].mDrawTarget->command(arg1, arg2, arg3, arg4); \
} \
}
#define TILED_COMMAND5(command, type1, type2, type3, type4, type5) \
void \
DrawTargetTiled::command(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
{ \
for (size_t i = 0; i < mTiles.size(); i++) { \
if (!mTiles[i].mClippedOut) \
mTiles[i].mDrawTarget->command(arg1, arg2, arg3, arg4, arg5); \
} \
}
TILED_COMMAND(Flush)
TILED_COMMAND4(DrawFilter, FilterNode*, const Rect&, const Point&, const DrawOptions&)
TILED_COMMAND1(ClearRect, const Rect&)
TILED_COMMAND4(MaskSurface, const Pattern&, SourceSurface*, Point, const DrawOptions&)
TILED_COMMAND4(FillGlyphs, ScaledFont*, const GlyphBuffer&, const Pattern&, const DrawOptions&)
TILED_COMMAND3(Mask, const Pattern&, const Pattern&, const DrawOptions&)
void
DrawTargetTiled::PushClip(const Path* aPath)
{
if (!mClippedOutTilesStack.append(std::vector<bool>(mTiles.size()))) {
MOZ_CRASH("out of memory");
}
std::vector<bool>& clippedTiles = mClippedOutTilesStack.back();
Rect deviceRect = aPath->GetBounds(mTransform);
for (size_t i = 0; i < mTiles.size(); i++) {
if (!mTiles[i].mClippedOut) {
if (deviceRect.Intersects(Rect(mTiles[i].mTileOrigin.x,
mTiles[i].mTileOrigin.y,
mTiles[i].mDrawTarget->GetSize().width,
mTiles[i].mDrawTarget->GetSize().height))) {
mTiles[i].mDrawTarget->PushClip(aPath);
} else {
mTiles[i].mClippedOut = true;
clippedTiles[i] = true;
}
}
}
}
void
DrawTargetTiled::PushClipRect(const Rect& aRect)
{
if (!mClippedOutTilesStack.append(std::vector<bool>(mTiles.size()))) {
MOZ_CRASH("out of memory");
}
std::vector<bool>& clippedTiles = mClippedOutTilesStack.back();
Rect deviceRect = mTransform.TransformBounds(aRect);
for (size_t i = 0; i < mTiles.size(); i++) {
if (!mTiles[i].mClippedOut) {
if (deviceRect.Intersects(Rect(mTiles[i].mTileOrigin.x,
mTiles[i].mTileOrigin.y,
mTiles[i].mDrawTarget->GetSize().width,
mTiles[i].mDrawTarget->GetSize().height))) {
mTiles[i].mDrawTarget->PushClipRect(aRect);
} else {
mTiles[i].mClippedOut = true;
clippedTiles[i] = true;
}
}
}
}
void
DrawTargetTiled::PopClip()
{
std::vector<bool>& clippedTiles = mClippedOutTilesStack.back();
MOZ_ASSERT(clippedTiles.size() == mTiles.size());
for (size_t i = 0; i < mTiles.size(); i++) {
if (!mTiles[i].mClippedOut) {
mTiles[i].mDrawTarget->PopClip();
} else if (clippedTiles[i]) {
mTiles[i].mClippedOut = false;
}
}
mClippedOutTilesStack.popBack();
}
void
DrawTargetTiled::CopySurface(SourceSurface *aSurface,
const IntRect &aSourceRect,
const IntPoint &aDestination)
{
for (size_t i = 0; i < mTiles.size(); i++) {
IntPoint tileOrigin = mTiles[i].mTileOrigin;
IntSize tileSize = mTiles[i].mDrawTarget->GetSize();
if (!IntRect(aDestination, aSourceRect.Size()).Intersects(IntRect(tileOrigin, tileSize))) {
continue;
}
// CopySurface ignores the transform, account for that here.
mTiles[i].mDrawTarget->CopySurface(aSurface, aSourceRect, aDestination - tileOrigin);
}
}
void
DrawTargetTiled::SetTransform(const Matrix& aTransform)
{
for (size_t i = 0; i < mTiles.size(); i++) {
Matrix mat = aTransform;
mat.PostTranslate(Float(-mTiles[i].mTileOrigin.x), Float(-mTiles[i].mTileOrigin.y));
mTiles[i].mDrawTarget->SetTransform(mat);
}
DrawTarget::SetTransform(aTransform);
}
void
DrawTargetTiled::SetPermitSubpixelAA(bool aPermitSubpixelAA)
{
DrawTarget::SetPermitSubpixelAA(aPermitSubpixelAA);
for (size_t i = 0; i < mTiles.size(); i++) {
mTiles[i].mDrawTarget->SetPermitSubpixelAA(aPermitSubpixelAA);
}
}
void
DrawTargetTiled::DrawSurface(SourceSurface* aSurface, const Rect& aDest, const Rect& aSource, const DrawSurfaceOptions& aSurfaceOptions, const DrawOptions& aDrawOptions)
{
Rect deviceRect = mTransform.TransformBounds(aDest);
for (size_t i = 0; i < mTiles.size(); i++) {
if (!mTiles[i].mClippedOut &&
deviceRect.Intersects(Rect(mTiles[i].mTileOrigin.x,
mTiles[i].mTileOrigin.y,
mTiles[i].mDrawTarget->GetSize().width,
mTiles[i].mDrawTarget->GetSize().height))) {
mTiles[i].mDrawTarget->DrawSurface(aSurface, aDest, aSource, aSurfaceOptions, aDrawOptions);
}
}
}
void
DrawTargetTiled::FillRect(const Rect& aRect, const Pattern& aPattern, const DrawOptions& aDrawOptions)
{
Rect deviceRect = mTransform.TransformBounds(aRect);
for (size_t i = 0; i < mTiles.size(); i++) {
if (!mTiles[i].mClippedOut &&
deviceRect.Intersects(Rect(mTiles[i].mTileOrigin.x,
mTiles[i].mTileOrigin.y,
mTiles[i].mDrawTarget->GetSize().width,
mTiles[i].mDrawTarget->GetSize().height))) {
mTiles[i].mDrawTarget->FillRect(aRect, aPattern, aDrawOptions);
}
}
}
void
DrawTargetTiled::Stroke(const Path* aPath, const Pattern& aPattern, const StrokeOptions& aStrokeOptions, const DrawOptions& aDrawOptions)
{
// Approximate the stroke extents, since Path::GetStrokeExtents can be slow
Rect deviceRect = aPath->GetBounds(mTransform);
deviceRect.Inflate(MaxStrokeExtents(aStrokeOptions, mTransform));
for (size_t i = 0; i < mTiles.size(); i++) {
if (!mTiles[i].mClippedOut &&
deviceRect.Intersects(Rect(mTiles[i].mTileOrigin.x,
mTiles[i].mTileOrigin.y,
mTiles[i].mDrawTarget->GetSize().width,
mTiles[i].mDrawTarget->GetSize().height))) {
mTiles[i].mDrawTarget->Stroke(aPath, aPattern, aStrokeOptions, aDrawOptions);
}
}
}
void
DrawTargetTiled::StrokeRect(const Rect& aRect, const Pattern& aPattern, const StrokeOptions &aStrokeOptions, const DrawOptions& aDrawOptions)
{
Rect deviceRect = mTransform.TransformBounds(aRect);
Margin strokeMargin = MaxStrokeExtents(aStrokeOptions, mTransform);
Rect outerRect = deviceRect;
outerRect.Inflate(strokeMargin);
Rect innerRect;
if (mTransform.IsRectilinear()) {
// If rects are mapped to rects, we can compute the inner rect
// of the stroked rect.
innerRect = deviceRect;
innerRect.Deflate(strokeMargin);
}
for (size_t i = 0; i < mTiles.size(); i++) {
if (mTiles[i].mClippedOut) {
continue;
}
Rect tileRect(mTiles[i].mTileOrigin.x,
mTiles[i].mTileOrigin.y,
mTiles[i].mDrawTarget->GetSize().width,
mTiles[i].mDrawTarget->GetSize().height);
if (outerRect.Intersects(tileRect) && !innerRect.Contains(tileRect)) {
mTiles[i].mDrawTarget->StrokeRect(aRect, aPattern, aStrokeOptions, aDrawOptions);
}
}
}
void
DrawTargetTiled::StrokeLine(const Point& aStart, const Point& aEnd, const Pattern& aPattern, const StrokeOptions &aStrokeOptions, const DrawOptions& aDrawOptions)
{
Rect lineBounds = Rect(aStart, Size()).UnionEdges(Rect(aEnd, Size()));
Rect deviceRect = mTransform.TransformBounds(lineBounds);
deviceRect.Inflate(MaxStrokeExtents(aStrokeOptions, mTransform));
for (size_t i = 0; i < mTiles.size(); i++) {
if (!mTiles[i].mClippedOut &&
deviceRect.Intersects(Rect(mTiles[i].mTileOrigin.x,
mTiles[i].mTileOrigin.y,
mTiles[i].mDrawTarget->GetSize().width,
mTiles[i].mDrawTarget->GetSize().height))) {
mTiles[i].mDrawTarget->StrokeLine(aStart, aEnd, aPattern, aStrokeOptions, aDrawOptions);
}
}
}
void
DrawTargetTiled::Fill(const Path* aPath, const Pattern& aPattern, const DrawOptions& aDrawOptions)
{
Rect deviceRect = aPath->GetBounds(mTransform);
for (size_t i = 0; i < mTiles.size(); i++) {
if (!mTiles[i].mClippedOut &&
deviceRect.Intersects(Rect(mTiles[i].mTileOrigin.x,
mTiles[i].mTileOrigin.y,
mTiles[i].mDrawTarget->GetSize().width,
mTiles[i].mDrawTarget->GetSize().height))) {
mTiles[i].mDrawTarget->Fill(aPath, aPattern, aDrawOptions);
}
}
}
void
DrawTargetTiled::PushLayer(bool aOpaque, Float aOpacity, SourceSurface* aMask,
const Matrix& aMaskTransform, const IntRect& aBounds,
bool aCopyBackground)
{
// XXX - not sure this is what we want or whether we want to continue drawing to a larger
// intermediate surface, that would require tweaking the code in here a little though.
for (size_t i = 0; i < mTiles.size(); i++) {
if (!mTiles[i].mClippedOut) {
IntRect bounds = aBounds;
bounds.MoveBy(-mTiles[i].mTileOrigin);
mTiles[i].mDrawTarget->PushLayer(aOpaque, aOpacity, aMask, aMaskTransform, bounds, aCopyBackground);
}
}
PushedLayer layer(GetPermitSubpixelAA());
mPushedLayers.push_back(layer);
SetPermitSubpixelAA(aOpaque);
}
void
DrawTargetTiled::PopLayer()
{
// XXX - not sure this is what we want or whether we want to continue drawing to a larger
// intermediate surface, that would require tweaking the code in here a little though.
for (size_t i = 0; i < mTiles.size(); i++) {
if (!mTiles[i].mClippedOut) {
mTiles[i].mDrawTarget->PopLayer();
}
}
MOZ_ASSERT(mPushedLayers.size());
const PushedLayer& layer = mPushedLayers.back();
SetPermitSubpixelAA(layer.mOldPermitSubpixelAA);
}
} // namespace gfx
} // namespace mozilla
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