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flutter_flutter/sky/engine/platform/graphics/GraphicsContext.cpp

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/*
* Copyright (C) 2003, 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
* Copyright (C) 2013 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "flutter/sky/engine/platform/graphics/GraphicsContext.h"
#include "flutter/sky/engine/platform/geometry/IntRect.h"
#include "flutter/sky/engine/platform/geometry/RoundedRect.h"
#include "flutter/sky/engine/platform/graphics/Gradient.h"
#include "flutter/sky/engine/platform/graphics/skia/SkiaUtils.h"
#include "flutter/sky/engine/platform/text/BidiResolver.h"
#include "flutter/sky/engine/platform/text/TextRunIterator.h"
#include "flutter/sky/engine/wtf/Assertions.h"
#include "flutter/sky/engine/wtf/MathExtras.h"
#include "third_party/skia/include/core/SkAnnotation.h"
#include "third_party/skia/include/core/SkColorFilter.h"
#include "third_party/skia/include/core/SkData.h"
#include "third_party/skia/include/core/SkPicture.h"
#include "third_party/skia/include/core/SkRRect.h"
#include "third_party/skia/include/core/SkRefCnt.h"
#include "third_party/skia/include/core/SkSurface.h"
#include "third_party/skia/include/effects/SkBlurMaskFilter.h"
#include "third_party/skia/include/effects/SkCornerPathEffect.h"
#include "third_party/skia/include/effects/SkLumaColorFilter.h"
#include "third_party/skia/include/effects/SkPictureImageFilter.h"
#include "third_party/skia/include/gpu/GrRenderTarget.h"
#include "third_party/skia/include/gpu/GrTexture.h"
namespace blink {
struct GraphicsContext::CanvasSaveState {
CanvasSaveState(bool pendingSave, int count)
: m_pendingSave(pendingSave), m_restoreCount(count) { }
bool m_pendingSave;
int m_restoreCount;
};
GraphicsContext::GraphicsContext(SkCanvas* canvas, DisabledMode disableContextOrPainting)
: m_canvas(canvas)
, m_paintStateStack()
, m_paintStateIndex(0)
, m_pendingCanvasSave(false)
#if ENABLE(ASSERT)
, m_layerCount(0)
, m_disableDestructionChecks(false)
#endif
, m_disabledState(disableContextOrPainting)
, m_deviceScaleFactor(1.0f)
, m_regionTrackingMode(RegionTrackingDisabled)
, m_trackTextRegion(false)
, m_accelerated(false)
, m_isCertainlyOpaque(true)
, m_antialiasHairlineImages(false)
, m_shouldSmoothFonts(true)
{
ASSERT(canvas);
// FIXME: Do some tests to determine how many states are typically used, and allocate
// several here.
m_paintStateStack.append(GraphicsContextState::create());
m_paintState = m_paintStateStack.last().get();
}
GraphicsContext::~GraphicsContext()
{
#if ENABLE(ASSERT)
if (!m_disableDestructionChecks) {
ASSERT(!m_paintStateIndex);
ASSERT(!m_paintState->saveCount());
ASSERT(!m_layerCount);
ASSERT(m_canvasStateStack.isEmpty());
}
#endif
}
void GraphicsContext::resetCanvas(SkCanvas* canvas)
{
ASSERT(canvas);
m_canvas = canvas;
m_trackedRegion.reset();
}
void GraphicsContext::setRegionTrackingMode(RegionTrackingMode mode)
{
m_regionTrackingMode = mode;
if (mode == RegionTrackingOpaque)
m_trackedRegion.setTrackedRegionType(RegionTracker::Opaque);
else if (mode == RegionTrackingOverwrite)
m_trackedRegion.setTrackedRegionType(RegionTracker::Overwrite);
}
void GraphicsContext::save()
{
if (contextDisabled())
return;
m_paintState->incrementSaveCount();
m_canvasStateStack.append(CanvasSaveState(m_pendingCanvasSave, m_canvas->getSaveCount()));
m_pendingCanvasSave = true;
}
void GraphicsContext::restore()
{
if (contextDisabled())
return;
if (!m_paintStateIndex && !m_paintState->saveCount()) {
WTF_LOG_ERROR("ERROR void GraphicsContext::restore() stack is empty");
return;
}
if (m_paintState->saveCount()) {
m_paintState->decrementSaveCount();
} else {
m_paintStateIndex--;
m_paintState = m_paintStateStack[m_paintStateIndex].get();
}
CanvasSaveState savedState = m_canvasStateStack.last();
m_canvasStateStack.removeLast();
m_pendingCanvasSave = savedState.m_pendingSave;
m_canvas->restoreToCount(savedState.m_restoreCount);
}
void GraphicsContext::saveLayer(const SkRect* bounds, const SkPaint* paint)
{
if (contextDisabled())
return;
realizeCanvasSave();
m_canvas->saveLayer(bounds, paint);
if (regionTrackingEnabled())
m_trackedRegion.pushCanvasLayer(paint);
}
void GraphicsContext::restoreLayer()
{
if (contextDisabled())
return;
m_canvas->restore();
if (regionTrackingEnabled())
m_trackedRegion.popCanvasLayer(this);
}
void GraphicsContext::setStrokePattern(PassRefPtr<Pattern> pattern)
{
if (contextDisabled())
return;
ASSERT(pattern);
if (!pattern) {
setStrokeColor(Color::black);
return;
}
mutableState()->setStrokePattern(pattern);
}
void GraphicsContext::setStrokeGradient(PassRefPtr<Gradient> gradient)
{
if (contextDisabled())
return;
ASSERT(gradient);
if (!gradient) {
setStrokeColor(Color::black);
return;
}
mutableState()->setStrokeGradient(gradient);
}
void GraphicsContext::setFillPattern(PassRefPtr<Pattern> pattern)
{
if (contextDisabled())
return;
ASSERT(pattern);
if (!pattern) {
setFillColor(Color::black);
return;
}
mutableState()->setFillPattern(pattern);
}
void GraphicsContext::setFillGradient(PassRefPtr<Gradient> gradient)
{
if (contextDisabled())
return;
ASSERT(gradient);
if (!gradient) {
setFillColor(Color::black);
return;
}
mutableState()->setFillGradient(gradient);
}
void GraphicsContext::setShadow(const FloatSize& offset, float blur, const Color& color,
DrawLooperBuilder::ShadowTransformMode shadowTransformMode,
DrawLooperBuilder::ShadowAlphaMode shadowAlphaMode)
{
if (contextDisabled())
return;
if (!color.alpha() || (!offset.width() && !offset.height() && !blur)) {
clearShadow();
return;
}
OwnPtr<DrawLooperBuilder> drawLooperBuilder = DrawLooperBuilder::create();
drawLooperBuilder->addShadow(offset, blur, color, shadowTransformMode, shadowAlphaMode);
drawLooperBuilder->addUnmodifiedContent();
setDrawLooper(drawLooperBuilder.release());
}
void GraphicsContext::setDrawLooper(PassOwnPtr<DrawLooperBuilder> drawLooperBuilder)
{
if (contextDisabled())
return;
mutableState()->setDrawLooper(drawLooperBuilder->detachDrawLooper());
}
void GraphicsContext::clearDrawLooper()
{
if (contextDisabled())
return;
mutableState()->clearDrawLooper();
}
bool GraphicsContext::hasShadow() const
{
return !!immutableState()->drawLooper();
}
bool GraphicsContext::getTransformedClipBounds(FloatRect* bounds) const
{
if (contextDisabled())
return false;
SkIRect skIBounds;
if (!m_canvas->getDeviceClipBounds(&skIBounds))
return false;
SkRect skBounds = SkRect::Make(skIBounds);
*bounds = FloatRect(skBounds);
return true;
}
SkMatrix GraphicsContext::getTotalMatrix() const
{
if (contextDisabled())
return SkMatrix::I();
return m_canvas->getTotalMatrix();
}
void GraphicsContext::adjustTextRenderMode(SkPaint* paint)
{
if (contextDisabled())
return;
if (!paint->isLCDRenderText())
return;
paint->setLCDRenderText(couldUseLCDRenderedText());
}
void GraphicsContext::setCompositeOperation(CompositeOperator compositeOperation, WebBlendMode blendMode)
{
if (contextDisabled())
return;
mutableState()->setCompositeOperation(compositeOperation, blendMode);
}
SkColorFilter* GraphicsContext::colorFilter() const
{
return immutableState()->colorFilter();
}
void GraphicsContext::setColorFilter(ColorFilterObsolete colorFilter)
{
}
bool GraphicsContext::readPixels(const SkImageInfo& info, void* pixels, size_t rowBytes, int x, int y)
{
if (contextDisabled())
return false;
return m_canvas->readPixels(info, pixels, rowBytes, x, y);
}
void GraphicsContext::setMatrix(const SkMatrix& matrix)
{
if (contextDisabled())
return;
realizeCanvasSave();
m_canvas->setMatrix(matrix);
}
void GraphicsContext::concat(const SkMatrix& matrix)
{
if (contextDisabled())
return;
if (matrix.isIdentity())
return;
realizeCanvasSave();
m_canvas->concat(matrix);
}
void GraphicsContext::beginTransparencyLayer(float opacity, const FloatRect* bounds)
{
beginLayer(opacity, immutableState()->compositeOperator(), bounds);
}
void GraphicsContext::beginLayer(float opacity, CompositeOperator op, const FloatRect* bounds, ColorFilterObsolete colorFilter, sk_sp<SkImageFilter> imageFilter)
{
if (contextDisabled())
return;
SkPaint layerPaint;
layerPaint.setAlpha(static_cast<unsigned char>(opacity * 255));
layerPaint.setBlendMode(WebCoreCompositeToSkiaComposite(op, m_paintState->blendMode()));
layerPaint.setImageFilter(imageFilter);
if (bounds) {
SkRect skBounds = WebCoreFloatRectToSKRect(*bounds);
saveLayer(&skBounds, &layerPaint);
} else {
saveLayer(0, &layerPaint);
}
#if ENABLE(ASSERT)
++m_layerCount;
#endif
}
void GraphicsContext::endLayer()
{
if (contextDisabled())
return;
restoreLayer();
ASSERT(m_layerCount > 0);
#if ENABLE(ASSERT)
--m_layerCount;
#endif
}
void GraphicsContext::drawConvexPolygon(size_t numPoints, const FloatPoint* points, bool shouldAntialias)
{
if (contextDisabled())
return;
if (numPoints <= 1)
return;
SkPath path;
setPathFromConvexPoints(&path, numPoints, points);
SkPaint paint(immutableState()->fillPaint());
paint.setAntiAlias(shouldAntialias);
drawPath(path, paint);
if (strokeStyle() != NoStroke)
drawPath(path, immutableState()->strokePaint());
}
float GraphicsContext::prepareFocusRingPaint(SkPaint& paint, const Color& color, int width) const
{
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kStroke_Style);
paint.setColor(color.rgb());
paint.setStrokeWidth(focusRingWidth(width));
return 1;
}
void GraphicsContext::drawFocusRingPath(const SkPath& path, const Color& color, int width)
{
SkPaint paint;
float cornerRadius = prepareFocusRingPaint(paint, color, width);
paint.setPathEffect(SkCornerPathEffect::Make(SkFloatToScalar(cornerRadius)));
// Outer path
drawPath(path, paint);
}
void GraphicsContext::drawFocusRingRect(const SkRect& rect, const Color& color, int width)
{
SkPaint paint;
float cornerRadius = prepareFocusRingPaint(paint, color, width);
SkRRect rrect;
rrect.setRectXY(rect, SkFloatToScalar(cornerRadius), SkFloatToScalar(cornerRadius));
// Outer rect
drawRRect(rrect, paint);
}
static inline IntRect areaCastingShadowInHole(const IntRect& holeRect, int shadowBlur, int shadowSpread, const IntSize& shadowOffset)
{
IntRect bounds(holeRect);
bounds.inflate(shadowBlur);
if (shadowSpread < 0)
bounds.inflate(-shadowSpread);
IntRect offsetBounds = bounds;
offsetBounds.move(-shadowOffset);
return unionRect(bounds, offsetBounds);
}
void GraphicsContext::drawInnerShadow(const RoundedRect& rect, const Color& shadowColor, const IntSize shadowOffset, int shadowBlur, int shadowSpread, Edges clippedEdges)
{
if (contextDisabled())
return;
IntRect holeRect(rect.rect());
holeRect.inflate(-shadowSpread);
if (holeRect.isEmpty()) {
if (rect.isRounded())
fillRoundedRect(rect, shadowColor);
else
fillRect(rect.rect(), shadowColor);
return;
}
if (clippedEdges & LeftEdge) {
holeRect.move(-std::max(shadowOffset.width(), 0) - shadowBlur, 0);
holeRect.setWidth(holeRect.width() + std::max(shadowOffset.width(), 0) + shadowBlur);
}
if (clippedEdges & TopEdge) {
holeRect.move(0, -std::max(shadowOffset.height(), 0) - shadowBlur);
holeRect.setHeight(holeRect.height() + std::max(shadowOffset.height(), 0) + shadowBlur);
}
if (clippedEdges & RightEdge)
holeRect.setWidth(holeRect.width() - std::min(shadowOffset.width(), 0) + shadowBlur);
if (clippedEdges & BottomEdge)
holeRect.setHeight(holeRect.height() - std::min(shadowOffset.height(), 0) + shadowBlur);
Color fillColor(shadowColor.red(), shadowColor.green(), shadowColor.blue(), 255);
IntRect outerRect = areaCastingShadowInHole(rect.rect(), shadowBlur, shadowSpread, shadowOffset);
RoundedRect roundedHole(holeRect, rect.radii());
save();
if (rect.isRounded()) {
Path path;
path.addRoundedRect(rect);
clipPath(path);
roundedHole.shrinkRadii(shadowSpread);
} else {
clip(rect.rect());
}
OwnPtr<DrawLooperBuilder> drawLooperBuilder = DrawLooperBuilder::create();
drawLooperBuilder->addShadow(shadowOffset, shadowBlur, shadowColor,
DrawLooperBuilder::ShadowRespectsTransforms, DrawLooperBuilder::ShadowIgnoresAlpha);
setDrawLooper(drawLooperBuilder.release());
fillRectWithRoundedHole(outerRect, roundedHole, fillColor);
restore();
clearDrawLooper();
}
void GraphicsContext::drawLine(const IntPoint& point1, const IntPoint& point2)
{
if (contextDisabled())
return;
StrokeStyle penStyle = strokeStyle();
if (penStyle == NoStroke)
return;
FloatPoint p1 = point1;
FloatPoint p2 = point2;
bool isVerticalLine = (p1.x() == p2.x());
int width = roundf(strokeThickness());
// We know these are vertical or horizontal lines, so the length will just
// be the sum of the displacement component vectors give or take 1 -
// probably worth the speed up of no square root, which also won't be exact.
FloatSize disp = p2 - p1;
int length = SkScalarRoundToInt(disp.width() + disp.height());
SkPaint paint(immutableState()->strokePaint(length));
if (strokeStyle() == DottedStroke || strokeStyle() == DashedStroke) {
// Do a rect fill of our endpoints. This ensures we always have the
// appearance of being a border. We then draw the actual dotted/dashed line.
SkRect r1, r2;
r1.set(p1.x(), p1.y(), p1.x() + width, p1.y() + width);
r2.set(p2.x(), p2.y(), p2.x() + width, p2.y() + width);
if (isVerticalLine) {
r1.offset(-width / 2, 0);
r2.offset(-width / 2, -width);
} else {
r1.offset(0, -width / 2);
r2.offset(-width, -width / 2);
}
SkPaint fillPaint;
fillPaint.setColor(paint.getColor());
drawRect(r1, fillPaint);
drawRect(r2, fillPaint);
}
adjustLineToPixelBoundaries(p1, p2, width, penStyle);
SkPoint pts[2] = { p1.data(), p2.data() };
m_canvas->drawPoints(SkCanvas::kLines_PointMode, 2, pts, paint);
if (regionTrackingEnabled())
m_trackedRegion.didDrawPoints(this, SkCanvas::kLines_PointMode, 2, pts, paint);
}
void GraphicsContext::drawLineForDocumentMarker(const FloatPoint& pt, float width, DocumentMarkerLineStyle style)
{
if (contextDisabled())
return;
// Use 2x resources for a device scale factor of 1.5 or above.
int deviceScaleFactor = m_deviceScaleFactor > 1.5f ? 2 : 1;
// Create the pattern we'll use to draw the underline.
int index = style == DocumentMarkerGrammarLineStyle ? 1 : 0;
static SkBitmap* misspellBitmap1x[2] = { 0, 0 };
static SkBitmap* misspellBitmap2x[2] = { 0, 0 };
SkBitmap** misspellBitmap = deviceScaleFactor == 2 ? misspellBitmap2x : misspellBitmap1x;
if (!misspellBitmap[index]) {
// We use a 2-pixel-high misspelling indicator because that seems to be
// what WebKit is designed for, and how much room there is in a typical
// page for it.
const int rowPixels = 32 * deviceScaleFactor; // Must be multiple of 4 for pattern below.
const int colPixels = 2 * deviceScaleFactor;
SkBitmap bitmap;
bitmap.allocN32Pixels(rowPixels, colPixels);
bitmap.eraseARGB(0, 0, 0, 0);
if (deviceScaleFactor == 1)
draw1xMarker(&bitmap, index);
else if (deviceScaleFactor == 2)
draw2xMarker(&bitmap, index);
else
ASSERT_NOT_REACHED();
misspellBitmap[index] = new SkBitmap(bitmap);
}
SkScalar originX = WebCoreFloatToSkScalar(pt.x());
// Offset it vertically by 1 so that there's some space under the text.
SkScalar originY = WebCoreFloatToSkScalar(pt.y()) + 1;
originX *= deviceScaleFactor;
originY *= deviceScaleFactor;
SkMatrix localMatrix;
localMatrix.setTranslate(originX, originY);
SkPaint paint;
paint.setShader(SkShader::MakeBitmapShader(
*misspellBitmap[index], SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, &localMatrix));
SkRect rect;
rect.set(originX, originY, originX + WebCoreFloatToSkScalar(width) * deviceScaleFactor, originY + SkIntToScalar(misspellBitmap[index]->height()));
if (deviceScaleFactor == 2) {
save();
scale(0.5, 0.5);
}
drawRect(rect, paint);
if (deviceScaleFactor == 2)
restore();
}
void GraphicsContext::drawLineForText(const FloatPoint& pt, float width)
{
if (contextDisabled())
return;
if (width <= 0)
return;
SkPaint paint;
switch (strokeStyle()) {
case NoStroke:
case SolidStroke:
case DoubleStroke:
case WavyStroke: {
int thickness = SkMax32(static_cast<int>(strokeThickness()), 1);
SkRect r;
r.fLeft = WebCoreFloatToSkScalar(pt.x());
// Avoid anti-aliasing lines. Currently, these are always horizontal.
// Round to nearest pixel to match text and other content.
r.fTop = WebCoreFloatToSkScalar(floorf(pt.y() + 0.5f));
r.fRight = r.fLeft + WebCoreFloatToSkScalar(width);
r.fBottom = r.fTop + SkIntToScalar(thickness);
paint = immutableState()->fillPaint();
// Text lines are drawn using the stroke color.
paint.setColor(effectiveStrokeColor());
drawRect(r, paint);
return;
}
case DottedStroke:
case DashedStroke: {
int y = floorf(pt.y() + std::max<float>(strokeThickness() / 2.0f, 0.5f));
drawLine(IntPoint(pt.x(), y), IntPoint(pt.x() + width, y));
return;
}
}
ASSERT_NOT_REACHED();
}
// Draws a filled rectangle with a stroked border.
void GraphicsContext::drawRect(const IntRect& rect)
{
if (contextDisabled())
return;
ASSERT(!rect.isEmpty());
if (rect.isEmpty())
return;
SkRect skRect = rect;
int fillcolorNotTransparent = immutableState()->fillColor().rgb() & 0xFF000000;
if (fillcolorNotTransparent)
drawRect(skRect, immutableState()->fillPaint());
if (immutableState()->strokeData().style() != NoStroke
&& immutableState()->strokeData().color().alpha()) {
// Stroke a width: 1 inset border
SkPaint paint(immutableState()->fillPaint());
paint.setColor(effectiveStrokeColor());
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(1);
skRect.inset(0.5f, 0.5f);
drawRect(skRect, paint);
}
}
void GraphicsContext::drawText(const Font& font, const TextRunPaintInfo& runInfo, const FloatPoint& point)
{
if (contextDisabled())
return;
font.drawText(this, runInfo, point);
}
void GraphicsContext::drawEmphasisMarks(const Font& font, const TextRunPaintInfo& runInfo, const AtomicString& mark, const FloatPoint& point)
{
if (contextDisabled())
return;
font.drawEmphasisMarks(this, runInfo, mark, point);
}
void GraphicsContext::drawBidiText(const Font& font, const TextRunPaintInfo& runInfo, const FloatPoint& point, Font::CustomFontNotReadyAction customFontNotReadyAction)
{
if (contextDisabled())
return;
// sub-run painting is not supported for Bidi text.
const TextRun& run = runInfo.run;
ASSERT((runInfo.from == 0) && (runInfo.to == run.length()));
BidiResolver<TextRunIterator, BidiCharacterRun> bidiResolver;
bidiResolver.setStatus(BidiStatus(run.direction(), run.directionalOverride()));
bidiResolver.setPositionIgnoringNestedIsolates(TextRunIterator(&run, 0));
// FIXME: This ownership should be reversed. We should pass BidiRunList
// to BidiResolver in createBidiRunsForLine.
BidiRunList<BidiCharacterRun>& bidiRuns = bidiResolver.runs();
bidiResolver.createBidiRunsForLine(TextRunIterator(&run, run.length()));
if (!bidiRuns.runCount())
return;
FloatPoint currPoint = point;
BidiCharacterRun* bidiRun = bidiRuns.firstRun();
while (bidiRun) {
TextRun subrun = run.subRun(bidiRun->start(), bidiRun->stop() - bidiRun->start());
bool isRTL = bidiRun->level() % 2;
subrun.setDirection(isRTL ? RTL : LTR);
subrun.setDirectionalOverride(bidiRun->dirOverride());
TextRunPaintInfo subrunInfo(subrun);
subrunInfo.bounds = runInfo.bounds;
float runWidth = font.drawUncachedText(this, subrunInfo, currPoint, customFontNotReadyAction);
bidiRun = bidiRun->next();
currPoint.move(runWidth, 0);
}
bidiRuns.deleteRuns();
}
void GraphicsContext::drawHighlightForText(const Font& font, const TextRun& run, const FloatPoint& point, int h, const Color& backgroundColor, int from, int to)
{
if (contextDisabled())
return;
fillRect(font.selectionRectForText(run, point, h, from, to), backgroundColor);
}
void GraphicsContext::drawImage(Image* image, const IntPoint& p, CompositeOperator op, RespectImageOrientationEnum shouldRespectImageOrientation)
{
if (!image)
return;
drawImage(image, FloatRect(IntRect(p, image->size())), FloatRect(FloatPoint(), FloatSize(image->size())), op, shouldRespectImageOrientation);
}
void GraphicsContext::drawImage(Image* image, const IntRect& r, CompositeOperator op, RespectImageOrientationEnum shouldRespectImageOrientation)
{
if (!image)
return;
drawImage(image, FloatRect(r), FloatRect(FloatPoint(), FloatSize(image->size())), op, shouldRespectImageOrientation);
}
void GraphicsContext::drawImage(Image* image, const FloatRect& dest, const FloatRect& src, CompositeOperator op, RespectImageOrientationEnum shouldRespectImageOrientation)
{
drawImage(image, dest, src, op, WebBlendModeNormal, shouldRespectImageOrientation);
}
void GraphicsContext::drawImage(Image* image, const FloatRect& dest)
{
if (!image)
return;
drawImage(image, dest, FloatRect(IntRect(IntPoint(), image->size())));
}
void GraphicsContext::drawImage(Image* image, const FloatRect& dest, const FloatRect& src, CompositeOperator op, WebBlendMode blendMode, RespectImageOrientationEnum shouldRespectImageOrientation)
{
if (contextDisabled() || !image)
return;
image->draw(this, dest, src, op, blendMode, shouldRespectImageOrientation);
}
void GraphicsContext::drawTiledImage(Image* image, const IntRect& destRect, const IntPoint& srcPoint, const IntSize& tileSize, CompositeOperator op, WebBlendMode blendMode, const IntSize& repeatSpacing)
{
if (contextDisabled() || !image)
return;
image->drawTiled(this, destRect, srcPoint, tileSize, op, blendMode, repeatSpacing);
}
void GraphicsContext::drawTiledImage(Image* image, const IntRect& dest, const IntRect& srcRect,
const FloatSize& tileScaleFactor, Image::TileRule hRule, Image::TileRule vRule, CompositeOperator op)
{
if (contextDisabled() || !image)
return;
if (hRule == Image::StretchTile && vRule == Image::StretchTile) {
// Just do a scale.
drawImage(image, dest, srcRect, op);
return;
}
image->drawTiled(this, dest, srcRect, tileScaleFactor, hRule, vRule, op);
}
void GraphicsContext::drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top, const SkPaint* paint)
{
if (contextDisabled())
return;
m_canvas->drawBitmap(bitmap, left, top, paint);
if (regionTrackingEnabled()) {
SkRect rect = SkRect::MakeXYWH(left, top, bitmap.width(), bitmap.height());
m_trackedRegion.didDrawRect(this, rect, *paint, &bitmap);
}
}
void GraphicsContext::drawBitmapRect(const SkBitmap& bitmap, const SkRect* src,
const SkRect& dst, const SkPaint* paint)
{
if (contextDisabled())
return;
SkCanvas::SrcRectConstraint flags =
immutableState()->shouldClampToSourceRect() ? SkCanvas::kStrict_SrcRectConstraint : SkCanvas::kFast_SrcRectConstraint;
m_canvas->drawBitmapRect(bitmap, *src, dst, paint, flags);
if (regionTrackingEnabled())
m_trackedRegion.didDrawRect(this, dst, *paint, &bitmap);
}
void GraphicsContext::drawOval(const SkRect& oval, const SkPaint& paint)
{
if (contextDisabled())
return;
m_canvas->drawOval(oval, paint);
if (regionTrackingEnabled())
m_trackedRegion.didDrawBounded(this, oval, paint);
}
void GraphicsContext::drawPath(const SkPath& path, const SkPaint& paint)
{
if (contextDisabled())
return;
m_canvas->drawPath(path, paint);
if (regionTrackingEnabled())
m_trackedRegion.didDrawPath(this, path, paint);
}
void GraphicsContext::drawRect(const SkRect& rect, const SkPaint& paint)
{
if (contextDisabled())
return;
m_canvas->drawRect(rect, paint);
if (regionTrackingEnabled())
m_trackedRegion.didDrawRect(this, rect, paint, 0);
}
void GraphicsContext::drawRRect(const SkRRect& rrect, const SkPaint& paint)
{
if (contextDisabled())
return;
m_canvas->drawRRect(rrect, paint);
if (regionTrackingEnabled())
m_trackedRegion.didDrawBounded(this, rrect.rect(), paint);
}
void GraphicsContext::didDrawRect(const SkRect& rect, const SkPaint& paint, const SkBitmap* bitmap)
{
if (contextDisabled())
return;
if (regionTrackingEnabled())
m_trackedRegion.didDrawRect(this, rect, paint, bitmap);
}
void GraphicsContext::drawPosText(const void* text, size_t byteLength,
const SkPoint pos[], const SkRect& textRect, const SkPaint& paint)
{
if (contextDisabled())
return;
m_canvas->drawPosText(text, byteLength, pos, paint);
didDrawTextInRect(textRect);
// FIXME: compute bounds for positioned text.
if (regionTrackingEnabled())
m_trackedRegion.didDrawUnbounded(this, paint, RegionTracker::FillOrStroke);
}
void GraphicsContext::drawPosTextH(const void* text, size_t byteLength,
const SkScalar xpos[], SkScalar constY, const SkRect& textRect, const SkPaint& paint)
{
if (contextDisabled())
return;
m_canvas->drawPosTextH(text, byteLength, xpos, constY, paint);
didDrawTextInRect(textRect);
// FIXME: compute bounds for positioned text.
if (regionTrackingEnabled())
m_trackedRegion.didDrawUnbounded(this, paint, RegionTracker::FillOrStroke);
}
void GraphicsContext::drawTextBlob(const SkTextBlob* blob, const SkPoint& origin, const SkPaint& paint)
{
if (contextDisabled())
return;
m_canvas->drawTextBlob(blob, origin.x(), origin.y(), paint);
SkRect bounds = blob->bounds();
bounds.offset(origin);
didDrawTextInRect(bounds);
// FIXME: use bounds here if it helps performance.
if (regionTrackingEnabled())
m_trackedRegion.didDrawUnbounded(this, paint, RegionTracker::FillOrStroke);
}
void GraphicsContext::fillPath(const Path& pathToFill)
{
if (contextDisabled() || pathToFill.isEmpty())
return;
// Use const_cast and temporarily modify the fill type instead of copying the path.
SkPath& path = const_cast<SkPath&>(pathToFill.skPath());
SkPath::FillType previousFillType = path.getFillType();
SkPath::FillType temporaryFillType = WebCoreWindRuleToSkFillType(immutableState()->fillRule());
path.setFillType(temporaryFillType);
drawPath(path, immutableState()->fillPaint());
path.setFillType(previousFillType);
}
void GraphicsContext::fillRect(const FloatRect& rect)
{
if (contextDisabled())
return;
SkRect r = rect;
drawRect(r, immutableState()->fillPaint());
}
void GraphicsContext::fillRect(const FloatRect& rect, const Color& color)
{
if (contextDisabled())
return;
SkRect r = rect;
SkPaint paint = immutableState()->fillPaint();
paint.setColor(color.rgb());
drawRect(r, paint);
}
void GraphicsContext::fillBetweenRoundedRects(const IntRect& outer, const IntSize& outerTopLeft, const IntSize& outerTopRight, const IntSize& outerBottomLeft, const IntSize& outerBottomRight,
const IntRect& inner, const IntSize& innerTopLeft, const IntSize& innerTopRight, const IntSize& innerBottomLeft, const IntSize& innerBottomRight, const Color& color) {
if (contextDisabled())
return;
SkVector outerRadii[4];
SkVector innerRadii[4];
setRadii(outerRadii, outerTopLeft, outerTopRight, outerBottomRight, outerBottomLeft);
setRadii(innerRadii, innerTopLeft, innerTopRight, innerBottomRight, innerBottomLeft);
SkRRect rrOuter;
SkRRect rrInner;
rrOuter.setRectRadii(outer, outerRadii);
rrInner.setRectRadii(inner, innerRadii);
SkPaint paint(immutableState()->fillPaint());
paint.setColor(color.rgb());
m_canvas->drawDRRect(rrOuter, rrInner, paint);
if (regionTrackingEnabled())
m_trackedRegion.didDrawBounded(this, rrOuter.getBounds(), paint);
}
void GraphicsContext::fillBetweenRoundedRects(const RoundedRect& outer, const RoundedRect& inner, const Color& color)
{
fillBetweenRoundedRects(outer.rect(), outer.radii().topLeft(), outer.radii().topRight(), outer.radii().bottomLeft(), outer.radii().bottomRight(),
inner.rect(), inner.radii().topLeft(), inner.radii().topRight(), inner.radii().bottomLeft(), inner.radii().bottomRight(), color);
}
void GraphicsContext::fillRoundedRect(const IntRect& rect, const IntSize& topLeft, const IntSize& topRight,
const IntSize& bottomLeft, const IntSize& bottomRight, const Color& color)
{
if (contextDisabled())
return;
if (topLeft.width() + topRight.width() > rect.width()
|| bottomLeft.width() + bottomRight.width() > rect.width()
|| topLeft.height() + bottomLeft.height() > rect.height()
|| topRight.height() + bottomRight.height() > rect.height()) {
// Not all the radii fit, return a rect. This matches the behavior of
// Path::createRoundedRectangle. Without this we attempt to draw a round
// shadow for a square box.
fillRect(rect, color);
return;
}
SkVector radii[4];
setRadii(radii, topLeft, topRight, bottomRight, bottomLeft);
SkRRect rr;
rr.setRectRadii(rect, radii);
SkPaint paint(immutableState()->fillPaint());
paint.setColor(color.rgb());
m_canvas->drawRRect(rr, paint);
if (regionTrackingEnabled())
m_trackedRegion.didDrawBounded(this, rr.getBounds(), paint);
}
void GraphicsContext::fillEllipse(const FloatRect& ellipse)
{
if (contextDisabled())
return;
SkRect rect = ellipse;
drawOval(rect, immutableState()->fillPaint());
}
void GraphicsContext::strokePath(const Path& pathToStroke)
{
if (contextDisabled() || pathToStroke.isEmpty())
return;
const SkPath& path = pathToStroke.skPath();
drawPath(path, immutableState()->strokePaint());
}
void GraphicsContext::strokeRect(const FloatRect& rect)
{
strokeRect(rect, strokeThickness());
}
void GraphicsContext::strokeRect(const FloatRect& rect, float lineWidth)
{
if (contextDisabled())
return;
SkPaint paint(immutableState()->strokePaint());
paint.setStrokeWidth(WebCoreFloatToSkScalar(lineWidth));
// Reset the dash effect to account for the width
immutableState()->strokeData().setupPaintDashPathEffect(&paint, 0);
// strokerect has special rules for CSS when the rect is degenerate:
// if width==0 && height==0, do nothing
// if width==0 || height==0, then just draw line for the other dimension
SkRect r(rect);
bool validW = r.width() > 0;
bool validH = r.height() > 0;
if (validW && validH) {
drawRect(r, paint);
} else if (validW || validH) {
// we are expected to respect the lineJoin, so we can't just call
// drawLine -- we have to create a path that doubles back on itself.
SkPath path;
path.moveTo(r.fLeft, r.fTop);
path.lineTo(r.fRight, r.fBottom);
path.close();
drawPath(path, paint);
}
}
void GraphicsContext::strokeEllipse(const FloatRect& ellipse)
{
if (contextDisabled())
return;
drawOval(ellipse, immutableState()->strokePaint());
}
void GraphicsContext::clipRoundedRect(const RoundedRect& rect, SkClipOp clipOp)
{
if (contextDisabled())
return;
if (!rect.isRounded()) {
clipRect(rect.rect(), NotAntiAliased, clipOp);
return;
}
SkVector radii[4];
RoundedRect::Radii wkRadii = rect.radii();
setRadii(radii, wkRadii.topLeft(), wkRadii.topRight(), wkRadii.bottomRight(), wkRadii.bottomLeft());
SkRRect r;
r.setRectRadii(rect.rect(), radii);
clipRRect(r, AntiAliased, clipOp);
}
void GraphicsContext::clipOut(const Path& pathToClip)
{
if (contextDisabled())
return;
// Use const_cast and temporarily toggle the inverse fill type instead of copying the path.
SkPath& path = const_cast<SkPath&>(pathToClip.skPath());
path.toggleInverseFillType();
clipPath(path, AntiAliased);
path.toggleInverseFillType();
}
void GraphicsContext::clipPath(const Path& pathToClip, WindRule clipRule)
{
if (contextDisabled() || pathToClip.isEmpty())
return;
// Use const_cast and temporarily modify the fill type instead of copying the path.
SkPath& path = const_cast<SkPath&>(pathToClip.skPath());
SkPath::FillType previousFillType = path.getFillType();
SkPath::FillType temporaryFillType = WebCoreWindRuleToSkFillType(clipRule);
path.setFillType(temporaryFillType);
clipPath(path, AntiAliased);
path.setFillType(previousFillType);
}
void GraphicsContext::clipConvexPolygon(size_t numPoints, const FloatPoint* points, bool antialiased)
{
if (contextDisabled())
return;
if (numPoints <= 1)
return;
SkPath path;
setPathFromConvexPoints(&path, numPoints, points);
clipPath(path, antialiased ? AntiAliased : NotAntiAliased);
}
void GraphicsContext::clipOutRoundedRect(const RoundedRect& rect)
{
if (contextDisabled())
return;
clipRoundedRect(rect, SkClipOp::kDifference);
}
void GraphicsContext::canvasClip(const Path& pathToClip, WindRule clipRule)
{
if (contextDisabled())
return;
// Use const_cast and temporarily modify the fill type instead of copying the path.
SkPath& path = const_cast<SkPath&>(pathToClip.skPath());
SkPath::FillType previousFillType = path.getFillType();
SkPath::FillType temporaryFillType = WebCoreWindRuleToSkFillType(clipRule);
path.setFillType(temporaryFillType);
clipPath(path);
path.setFillType(previousFillType);
}
void GraphicsContext::clipRect(const SkRect& rect, AntiAliasingMode aa, SkClipOp op)
{
if (contextDisabled())
return;
realizeCanvasSave();
m_canvas->clipRect(rect, op, aa == AntiAliased);
}
void GraphicsContext::clipPath(const SkPath& path, AntiAliasingMode aa, SkClipOp op)
{
if (contextDisabled())
return;
realizeCanvasSave();
m_canvas->clipPath(path, op, aa == AntiAliased);
}
void GraphicsContext::clipRRect(const SkRRect& rect, AntiAliasingMode aa, SkClipOp op)
{
if (contextDisabled())
return;
realizeCanvasSave();
m_canvas->clipRRect(rect, op, aa == AntiAliased);
}
void GraphicsContext::rotate(float angleInRadians)
{
if (contextDisabled())
return;
realizeCanvasSave();
m_canvas->rotate(WebCoreFloatToSkScalar(angleInRadians * (180.0f / 3.14159265f)));
}
void GraphicsContext::translate(float x, float y)
{
if (contextDisabled())
return;
if (!x && !y)
return;
realizeCanvasSave();
m_canvas->translate(WebCoreFloatToSkScalar(x), WebCoreFloatToSkScalar(y));
}
void GraphicsContext::scale(float x, float y)
{
if (contextDisabled())
return;
if (x == 1.0f && y == 1.0f)
return;
realizeCanvasSave();
m_canvas->scale(WebCoreFloatToSkScalar(x), WebCoreFloatToSkScalar(y));
}
AffineTransform GraphicsContext::getCTM() const
{
if (contextDisabled())
return AffineTransform();
SkMatrix m = getTotalMatrix();
return AffineTransform(SkScalarToDouble(m.getScaleX()),
SkScalarToDouble(m.getSkewY()),
SkScalarToDouble(m.getSkewX()),
SkScalarToDouble(m.getScaleY()),
SkScalarToDouble(m.getTranslateX()),
SkScalarToDouble(m.getTranslateY()));
}
void GraphicsContext::fillRect(const FloatRect& rect, const Color& color, CompositeOperator op)
{
if (contextDisabled())
return;
CompositeOperator previousOperator = compositeOperation();
setCompositeOperation(op);
fillRect(rect, color);
setCompositeOperation(previousOperator);
}
void GraphicsContext::fillRoundedRect(const RoundedRect& rect, const Color& color)
{
if (contextDisabled())
return;
if (rect.isRounded())
fillRoundedRect(rect.rect(), rect.radii().topLeft(), rect.radii().topRight(), rect.radii().bottomLeft(), rect.radii().bottomRight(), color);
else
fillRect(rect.rect(), color);
}
void GraphicsContext::fillRectWithRoundedHole(const IntRect& rect, const RoundedRect& roundedHoleRect, const Color& color)
{
if (contextDisabled())
return;
Path path;
path.addRect(rect);
if (!roundedHoleRect.radii().isZero())
path.addRoundedRect(roundedHoleRect);
else
path.addRect(roundedHoleRect.rect());
WindRule oldFillRule = fillRule();
Color oldFillColor = fillColor();
setFillRule(RULE_EVENODD);
setFillColor(color);
fillPath(path);
setFillRule(oldFillRule);
setFillColor(oldFillColor);
}
void GraphicsContext::clearRect(const FloatRect& rect)
{
if (contextDisabled())
return;
SkRect r = rect;
SkPaint paint(immutableState()->fillPaint());
paint.setBlendMode(SkBlendMode::kClear);
drawRect(r, paint);
}
void GraphicsContext::adjustLineToPixelBoundaries(FloatPoint& p1, FloatPoint& p2, float strokeWidth, StrokeStyle penStyle)
{
// For odd widths, we add in 0.5 to the appropriate x/y so that the float arithmetic
// works out. For example, with a border width of 3, WebKit will pass us (y1+y2)/2, e.g.,
// (50+53)/2 = 103/2 = 51 when we want 51.5. It is always true that an even width gave
// us a perfect position, but an odd width gave us a position that is off by exactly 0.5.
if (penStyle == DottedStroke || penStyle == DashedStroke) {
if (p1.x() == p2.x()) {
p1.setY(p1.y() + strokeWidth);
p2.setY(p2.y() - strokeWidth);
} else {
p1.setX(p1.x() + strokeWidth);
p2.setX(p2.x() - strokeWidth);
}
}
if (static_cast<int>(strokeWidth) % 2) { //odd
if (p1.x() == p2.x()) {
// We're a vertical line. Adjust our x.
p1.setX(p1.x() + 0.5f);
p2.setX(p2.x() + 0.5f);
} else {
// We're a horizontal line. Adjust our y.
p1.setY(p1.y() + 0.5f);
p2.setY(p2.y() + 0.5f);
}
}
}
void GraphicsContext::setPathFromConvexPoints(SkPath* path, size_t numPoints, const FloatPoint* points)
{
path->incReserve(numPoints);
path->moveTo(WebCoreFloatToSkScalar(points[0].x()),
WebCoreFloatToSkScalar(points[0].y()));
for (size_t i = 1; i < numPoints; ++i) {
path->lineTo(WebCoreFloatToSkScalar(points[i].x()),
WebCoreFloatToSkScalar(points[i].y()));
}
/* The code used to just blindly call this
path->setIsConvex(true);
But webkit can sometimes send us non-convex 4-point values, so we mark the path's
convexity as unknown, so it will get computed by skia at draw time.
See crbug.com 108605
*/
SkPath::Convexity convexity = SkPath::kConvex_Convexity;
if (numPoints == 4)
convexity = SkPath::kUnknown_Convexity;
path->setConvexity(convexity);
}
void GraphicsContext::setRadii(SkVector* radii, IntSize topLeft, IntSize topRight, IntSize bottomRight, IntSize bottomLeft)
{
radii[SkRRect::kUpperLeft_Corner].set(SkIntToScalar(topLeft.width()),
SkIntToScalar(topLeft.height()));
radii[SkRRect::kUpperRight_Corner].set(SkIntToScalar(topRight.width()),
SkIntToScalar(topRight.height()));
radii[SkRRect::kLowerRight_Corner].set(SkIntToScalar(bottomRight.width()),
SkIntToScalar(bottomRight.height()));
radii[SkRRect::kLowerLeft_Corner].set(SkIntToScalar(bottomLeft.width()),
SkIntToScalar(bottomLeft.height()));
}
void GraphicsContext::draw2xMarker(SkBitmap* bitmap, int index)
{
const SkPMColor lineColor = lineColors(index);
const SkPMColor antiColor1 = antiColors1(index);
const SkPMColor antiColor2 = antiColors2(index);
uint32_t* row1 = bitmap->getAddr32(0, 0);
uint32_t* row2 = bitmap->getAddr32(0, 1);
uint32_t* row3 = bitmap->getAddr32(0, 2);
uint32_t* row4 = bitmap->getAddr32(0, 3);
// Pattern: X0o o0X0o o0
// XX0o o0XXX0o o0X
// o0XXX0o o0XXX0o
// o0X0o o0X0o
const SkPMColor row1Color[] = { lineColor, antiColor1, antiColor2, 0, 0, 0, antiColor2, antiColor1 };
const SkPMColor row2Color[] = { lineColor, lineColor, antiColor1, antiColor2, 0, antiColor2, antiColor1, lineColor };
const SkPMColor row3Color[] = { 0, antiColor2, antiColor1, lineColor, lineColor, lineColor, antiColor1, antiColor2 };
const SkPMColor row4Color[] = { 0, 0, antiColor2, antiColor1, lineColor, antiColor1, antiColor2, 0 };
for (int x = 0; x < bitmap->width() + 8; x += 8) {
int count = std::min(bitmap->width() - x, 8);
if (count > 0) {
memcpy(row1 + x, row1Color, count * sizeof(SkPMColor));
memcpy(row2 + x, row2Color, count * sizeof(SkPMColor));
memcpy(row3 + x, row3Color, count * sizeof(SkPMColor));
memcpy(row4 + x, row4Color, count * sizeof(SkPMColor));
}
}
}
void GraphicsContext::draw1xMarker(SkBitmap* bitmap, int index)
{
const uint32_t lineColor = lineColors(index);
const uint32_t antiColor = antiColors2(index);
// Pattern: X o o X o o X
// o X o o X o
uint32_t* row1 = bitmap->getAddr32(0, 0);
uint32_t* row2 = bitmap->getAddr32(0, 1);
for (int x = 0; x < bitmap->width(); x++) {
switch (x % 4) {
case 0:
row1[x] = lineColor;
break;
case 1:
row1[x] = antiColor;
row2[x] = antiColor;
break;
case 2:
row2[x] = lineColor;
break;
case 3:
row1[x] = antiColor;
row2[x] = antiColor;
break;
}
}
}
SkPMColor GraphicsContext::lineColors(int index)
{
static const SkPMColor colors[] = {
SkPreMultiplyARGB(0xFF, 0xFF, 0x00, 0x00), // Opaque red.
SkPreMultiplyARGB(0xFF, 0xC0, 0xC0, 0xC0) // Opaque gray.
};
return colors[index];
}
SkPMColor GraphicsContext::antiColors1(int index)
{
static const SkPMColor colors[] = {
SkPreMultiplyARGB(0xB0, 0xFF, 0x00, 0x00), // Semitransparent red.
SkPreMultiplyARGB(0xB0, 0xC0, 0xC0, 0xC0) // Semitransparent gray.
};
return colors[index];
}
SkPMColor GraphicsContext::antiColors2(int index)
{
static const SkPMColor colors[] = {
SkPreMultiplyARGB(0x60, 0xFF, 0x00, 0x00), // More transparent red
SkPreMultiplyARGB(0x60, 0xC0, 0xC0, 0xC0) // More transparent gray
};
return colors[index];
}
void GraphicsContext::didDrawTextInRect(const SkRect& textRect)
{
if (m_trackTextRegion)
m_textRegion.join(textRect);
}
void GraphicsContext::preparePaintForDrawRectToRect(
SkPaint* paint,
const SkRect& srcRect,
const SkRect& destRect,
CompositeOperator compositeOp,
WebBlendMode blendMode,
bool isLazyDecoded,
bool isDataComplete) const
{
paint->setBlendMode(WebCoreCompositeToSkiaComposite(compositeOp, blendMode));
paint->setColorFilter(sk_ref_sp(this->colorFilter()));
paint->setAlpha(this->getNormalizedAlpha());
paint->setLooper(this->drawLooper());
paint->setAntiAlias(shouldDrawAntiAliased(this, destRect));
InterpolationQuality resampling;
if (this->isAccelerated()) {
resampling = InterpolationLow;
} else if (isLazyDecoded) {
resampling = InterpolationHigh;
} else {
// Take into account scale applied to the canvas when computing sampling mode (e.g. CSS scale or page scale).
SkRect destRectTarget = destRect;
SkMatrix totalMatrix = this->getTotalMatrix();
if (!(totalMatrix.getType() & (SkMatrix::kAffine_Mask | SkMatrix::kPerspective_Mask)))
totalMatrix.mapRect(&destRectTarget, destRect);
resampling = computeInterpolationQuality(totalMatrix,
SkScalarToFloat(srcRect.width()), SkScalarToFloat(srcRect.height()),
SkScalarToFloat(destRectTarget.width()), SkScalarToFloat(destRectTarget.height()),
isDataComplete);
}
if (resampling == InterpolationNone) {
// FIXME: This is to not break tests (it results in the filter bitmap flag
// being set to true). We need to decide if we respect InterpolationNone
// being returned from computeInterpolationQuality.
resampling = InterpolationLow;
}
resampling = limitInterpolationQuality(this, resampling);
paint->setFilterQuality(static_cast<SkFilterQuality>(resampling));
}
} // namespace blink
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