DRAW_TEST_P(CGContextFillMode, OverlappedEllipses) {
CGContextRef context = GetDrawingContext();
CGRect bounds = GetDrawingBounds();
bounds = CGRectInset(bounds, 16.f, 16.f);
CGFloat width = bounds.size.width;
CGFloat height = bounds.size.height;
CGFloat xstart = bounds.origin.x;
CGFloat ystart = bounds.origin.y;
CGPathDrawingMode fillMode = GetParam();
CGMutablePathRef leftCircles = CGPathCreateMutable();
CGPathMoveToPoint(leftCircles, NULL, xstart + .25 * width + .4 * height, ystart + .5 * height);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .4 * height, 0, M_PI, true);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .4 * height, M_PI, 0, true);
CGPathMoveToPoint(leftCircles, NULL, xstart + .25 * width + .3 * height, ystart + .5 * height);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .3 * height, 0, M_PI, true);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .3 * height, M_PI, 0, true);
CGPathMoveToPoint(leftCircles, NULL, xstart + .25 * width + .2 * height, ystart + .5 * height);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .2 * height, 0, M_PI, true);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .2 * height, M_PI, 0, true);
CGPathMoveToPoint(leftCircles, NULL, xstart + .25 * width + .1 * height, ystart + .5 * height);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .1 * height, 0, M_PI, true);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .1 * height, M_PI, 0, true);
CGPathCloseSubpath(leftCircles);
CGMutablePathRef rightCircles = CGPathCreateMutable();
CGPathMoveToPoint(rightCircles, NULL, xstart + .75 * width + .4 * height, ystart + .5 * height);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .4 * height, 0, M_PI, false);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .4 * height, M_PI, 0, false);
CGPathMoveToPoint(rightCircles, NULL, xstart + .75 * width + .3 * height, ystart + .5 * height);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .3 * height, 0, M_PI, true);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .3 * height, M_PI, 0, true);
CGPathMoveToPoint(rightCircles, NULL, xstart + .75 * width + .2 * height, ystart + .5 * height);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .2 * height, 0, M_PI, false);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .2 * height, M_PI, 0, false);
CGPathMoveToPoint(rightCircles, NULL, xstart + .75 * width + .1 * height, ystart + .5 * height);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .1 * height, 0, M_PI, true);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .1 * height, M_PI, 0, true);
CGPathCloseSubpath(rightCircles);
CGContextAddPath(context, leftCircles);
CGContextAddPath(context, rightCircles);
CGContextSetRGBFillColor(context, 0, 0, 1, 1);
CGContextSetRGBStrokeColor(context, 1, 0, 0, 1);
CGContextDrawPath(context, fillMode);
CGPathRelease(leftCircles);
CGPathRelease(rightCircles);
}
void JBGStrokePathByLines(CGContextRef ctx, CGPathRef path, CGColorRef color_1, CGFloat width_1, CGColorRef color_2, CGFloat width_2, CGColorRef color_3, CGFloat width_3)
{
if (width_1 > 0.0f)
{
CGContextSetLineWidth(ctx, width_1);
CGContextAddPath(ctx, path);
CGContextSetStrokeColorWithColor(ctx, color_1);
CGContextStrokePath(ctx);
}
if (width_2 > 0.0f)
{
CGContextAddPath(ctx, path);
CGContextSetStrokeColorWithColor(ctx, color_2);
CGContextSetLineWidth(ctx, width_2);
CGContextStrokePath(ctx);
}
if (width_3 > 0.0f)
{
CGContextAddPath(ctx, path);
CGContextSetStrokeColorWithColor(ctx, color_3);
CGContextSetLineWidth(ctx, width_3);
CGContextStrokePath(ctx);
}
}
//-----------------------------------------------------------------------------
void CGDrawContext::fillLinearGradient (CGraphicsPath* _path, const CGradient& gradient, const CPoint& startPoint, const CPoint& endPoint, bool evenOdd, CGraphicsTransform* t)
{
QuartzGraphicsPath* path = dynamic_cast<QuartzGraphicsPath*> (_path);
if (path == 0)
return;
const QuartzGradient* cgGradient = dynamic_cast<const QuartzGradient*> (&gradient);
if (cgGradient == 0)
return;
CGContextRef cgContext = beginCGContext (true, currentState.drawMode.integralMode ());
if (cgContext)
{
if (t)
{
CGContextSaveGState (cgContext);
CGAffineTransform transform = QuartzGraphicsPath::createCGAfflineTransform (*t);
CGContextConcatCTM (cgContext, transform);
CGContextAddPath (cgContext, path->getCGPathRef ());
CGContextRestoreGState (cgContext);
}
else
CGContextAddPath (cgContext, path->getCGPathRef ());
if (evenOdd)
CGContextEOClip (cgContext);
else
CGContextClip (cgContext);
CGContextDrawLinearGradient (cgContext, *cgGradient, CGPointMake (startPoint.x, startPoint.y), CGPointMake (endPoint.x, endPoint.y), kCGGradientDrawsBeforeStartLocation | kCGGradientDrawsAfterEndLocation);
releaseCGContext (cgContext);
}
}
//-----------------------------------------------------------------------------
void CGDrawContext::drawGraphicsPath (CGraphicsPath* _path, PathDrawMode mode, CGraphicsTransform* t)
{
QuartzGraphicsPath* path = dynamic_cast<QuartzGraphicsPath*> (_path);
if (path == 0)
return;
CGContextRef context = beginCGContext (true, getDrawMode ().integralMode ());
if (context)
{
CGPathDrawingMode cgMode;
switch (mode)
{
case kPathFilledEvenOdd:
{
cgMode = kCGPathEOFill;
break;
}
case kPathStroked:
{
cgMode = kCGPathStroke;
applyLineStyle (context);
break;
}
default:
{
cgMode = kCGPathFill;
break;
}
}
if (getDrawMode ().integralMode ())
{
applyLineWidthCTM (context);
path->pixelAlign (this, t);
CGContextAddPath (context, path->getCGPathRef ());
}
else if (t)
{
CGContextSaveGState (context);
CGAffineTransform transform = QuartzGraphicsPath::createCGAffineTransform (*t);
CGContextConcatCTM (context, transform);
CGContextAddPath (context, path->getCGPathRef ());
CGContextRestoreGState (context);
}
else
CGContextAddPath (context, path->getCGPathRef ());
CGContextDrawPath (context, cgMode);
releaseCGContext (context);
}
}
bool
PathCG::StrokeContainsPoint(const StrokeOptions &aStrokeOptions,
const Point &aPoint,
const Matrix &aTransform) const
{
Matrix inverse = aTransform;
inverse.Invert();
Point transformedPoint = inverse*aPoint;
// We could probably drop the input transform and just transform the point at the caller?
CGPoint point = {transformedPoint.x, transformedPoint.y};
CGContextRef cg = ScratchContext();
CGContextSaveGState(cg);
CGContextBeginPath(cg);
CGContextAddPath(cg, mPath);
SetStrokeOptions(cg, aStrokeOptions);
CGContextReplacePathWithStrokedPath(cg);
CGContextRestoreGState(cg);
CGPathRef sPath = CGContextCopyPath(cg);
bool inStroke = CGPathContainsPoint(sPath, nullptr, point, false);
CGPathRelease(sPath);
return inStroke;
}
Rect
PathCG::GetStrokedBounds(const StrokeOptions &aStrokeOptions,
const Matrix &aTransform) const
{
// 10.7 has CGPathCreateCopyByStrokingPath which we could use
// instead of this scratch context business
CGContextRef cg = ScratchContext();
CGContextSaveGState(cg);
CGContextBeginPath(cg);
CGContextAddPath(cg, mPath);
SetStrokeOptions(cg, aStrokeOptions);
CGContextReplacePathWithStrokedPath(cg);
Rect bounds = CGRectToRect(CGContextGetPathBoundingBox(cg));
CGContextRestoreGState(cg);
if (!bounds.IsFinite()) {
return Rect();
}
return aTransform.TransformBounds(bounds);
}
void GraphicsContext::drawFocusRing(const Color& color)
{
if (paintingDisabled())
return;
float radius = (focusRingWidth() - 1) / 2.0f;
int offset = radius + focusRingOffset();
CGColorRef colorRef = color.isValid() ? cgColor(color) : 0;
CGMutablePathRef focusRingPath = CGPathCreateMutable();
const Vector<IntRect>& rects = focusRingRects();
unsigned rectCount = rects.size();
for (unsigned i = 0; i < rectCount; i++)
CGPathAddRect(focusRingPath, 0, CGRectInset(rects[i], -offset, -offset));
CGContextRef context = platformContext();
CGContextSaveGState(context);
CGContextBeginPath(context);
CGContextAddPath(context, focusRingPath);
wkDrawFocusRing(context, colorRef, radius);
CGColorRelease(colorRef);
CGPathRelease(focusRingPath);
CGContextRestoreGState(context);
}
void GraphicsContext::drawPath(const Path& path)
{
if (paintingDisabled())
return;
CGContextRef context = platformContext();
const GraphicsContextState& state = m_state;
if (state.fillGradient || state.strokeGradient) {
// We don't have any optimized way to fill & stroke a path using gradients
// FIXME: Be smarter about this.
fillPath(path);
strokePath(path);
return;
}
CGContextBeginPath(context);
CGContextAddPath(context, path.platformPath());
if (state.fillPattern)
applyFillPattern();
if (state.strokePattern)
applyStrokePattern();
CGPathDrawingMode drawingMode;
if (calculateDrawingMode(state, drawingMode))
CGContextDrawPath(context, drawingMode);
}
void GraphicsContext::fillPath(const Path& path)
{
if (paintingDisabled())
return;
CGContextRef context = platformContext();
CGContextBeginPath(context);
CGContextAddPath(context, path.platformPath());
if (m_state.fillGradient) {
CGContextSaveGState(context);
if (fillRule() == RULE_EVENODD)
CGContextEOClip(context);
else
CGContextClip(context);
CGContextConcatCTM(context, m_state.fillGradient->gradientSpaceTransform());
m_state.fillGradient->paint(this);
CGContextRestoreGState(context);
return;
}
if (m_state.fillPattern)
applyFillPattern();
fillPathWithFillRule(context, fillRule());
}
FloatRect strokeBoundingBox(const Path& path, RenderStyle* style, const RenderObject* object)
{
// the bbox might grow if the path is stroked.
// and CGPathGetBoundingBox doesn't support that, so we'll have
// to make an alternative call...
// FIXME: since this is mainly used to decide what to repaint,
// perhaps it would be sufficient to just outset the fill bbox by
// the stroke width - that should be way cheaper and simpler than
// what we do here.
CGPathRef cgPath = path.platformPath();
CGContextRef context = scratchContext();
CGContextSaveGState(context);
CGContextBeginPath(context);
CGContextAddPath(context, cgPath);
GraphicsContext gc(context);
applyStrokeStyleToContext(&gc, style, object);
CGContextReplacePathWithStrokedPath(context);
if (CGContextIsPathEmpty(context)) {
// CGContextReplacePathWithStrokedPath seems to fail to create a path sometimes, this is not well understood.
// returning here prevents CG from logging to the console from CGContextGetPathBoundingBox
CGContextRestoreGState(context);
return FloatRect();
}
CGRect box = CGContextGetPathBoundingBox(context);
CGContextRestoreGState(context);
return FloatRect(box);
}
//-----------------------------------------------------------------------------
void CGDrawContext::fillLinearGradient (CGraphicsPath* _path, const CGradient& gradient, const CPoint& startPoint, const CPoint& endPoint, bool evenOdd, CGraphicsTransform* t)
{
QuartzGraphicsPath* path = dynamic_cast<QuartzGraphicsPath*> (_path);
if (path == 0)
return;
const QuartzGradient* cgGradient = dynamic_cast<const QuartzGradient*> (&gradient);
if (cgGradient == 0)
return;
CGContextRef context = beginCGContext (true, getDrawMode ().integralMode ());
if (context)
{
CGPoint start = CGPointFromCPoint (startPoint);
CGPoint end = CGPointFromCPoint (endPoint);
if (getDrawMode ().integralMode ())
{
path->pixelAlign (this, t);
applyLineWidthCTM (context);
CGContextAddPath (context, path->getCGPathRef ());
start = pixelAlligned (start);
end = pixelAlligned (end);
}
else if (t)
{
CGContextSaveGState (context);
CGAffineTransform transform = QuartzGraphicsPath::createCGAffineTransform (*t);
CGContextConcatCTM (context, transform);
CGContextAddPath (context, path->getCGPathRef ());
CGContextRestoreGState (context);
}
else
CGContextAddPath (context, path->getCGPathRef ());
if (evenOdd)
CGContextEOClip (context);
else
CGContextClip (context);
CGContextDrawLinearGradient (context, *cgGradient, start, end, kCGGradientDrawsBeforeStartLocation | kCGGradientDrawsAfterEndLocation);
releaseCGContext (context);
}
}
void GraphicsContext::clipOut(const Path& path)
{
if (paintingDisabled())
return;
CGContextBeginPath(platformContext());
CGContextAddRect(platformContext(), CGContextGetClipBoundingBox(platformContext()));
CGContextAddPath(platformContext(), path.platformPath());
CGContextEOClip(platformContext());
}
void GraphicsContext::clip(const Path& path)
{
if (paintingDisabled())
return;
CGContextRef context = platformContext();
CGContextBeginPath(context);
CGContextAddPath(context, path.platformPath());
CGContextClip(context);
m_data->clip(path);
}
void CanvasRenderingContext2D::fill()
{
GraphicsContext* c = drawingContext();
if (!c)
return;
// FIXME: Do this through platform-independent GraphicsContext API.
#if PLATFORM(CG)
CGContextBeginPath(c->platformContext());
CGContextAddPath(c->platformContext(), state().m_path.platformPath());
if (!state().m_path.isEmpty())
willDraw(CGContextGetPathBoundingBox(c->platformContext()));
if (state().m_fillStyle->gradient()) {
// Shading works on the entire clip region, so convert the current path to a clip.
c->save();
CGContextClip(c->platformContext());
CGContextDrawShading(c->platformContext(), state().m_fillStyle->gradient()->platformShading());
c->restore();
} else {
if (state().m_fillStyle->pattern())
applyFillPattern();
CGContextFillPath(c->platformContext());
}
#elif PLATFORM(QT)
QPainterPath* path = state().m_path.platformPath();
QPainter* p = static_cast<QPainter*>(c->platformContext());
willDraw(path->controlPointRect());
if (state().m_fillStyle->gradient()) {
p->fillPath(*path, QBrush(*(state().m_fillStyle->gradient()->platformShading())));
} else {
if (state().m_fillStyle->pattern())
applyFillPattern();
p->fillPath(*path, p->brush());
}
#elif PLATFORM(CAIRO)
cairo_t* pathCr = state().m_path.platformPath()->m_cr;
cairo_t* cr = c->platformContext();
cairo_save(cr);
willDraw(state().m_path.boundingRect());
if (state().m_fillStyle->gradient()) {
cairo_set_source(cr, state().m_fillStyle->gradient()->platformShading());
c->addPath(state().m_path);
cairo_fill(cr);
} else {
if (state().m_fillStyle->pattern())
applyFillPattern();
c->addPath(state().m_path);
cairo_fill(cr);
}
cairo_restore(cr);
#endif
clearPathForDashboardBackwardCompatibilityMode();
}
DRAW_TEST_F(CGContextFlush, FillFlush, WhiteBackgroundTest<>) {
CGContextRef context = GetDrawingContext();
CGRect bounds = GetDrawingBounds();
_CGContextPushBeginDraw(context);
CGContextSetRGBFillColor(context, 1, 0, 0, 1);
CGContextFillRect(context, bounds);
// Flush the red fill rect
CGContextFlush(context);
CGContextSetRGBFillColor(context, 0, 0, 1, 1);
CGContextFillRect(context, CGRectMake(0, 0, 300, 300));
// We should still have red & blue rectangle should not show up.
unsigned char* dataPtr = static_cast<unsigned char*>(CGBitmapContextGetData(context));
ASSERT_NE(dataPtr, nullptr);
// Validate only the red fill rect is executed.
EXPECT_EQ(dataPtr[0], 0x00);
EXPECT_EQ(dataPtr[1], 0x00);
EXPECT_EQ(dataPtr[2], 0xff);
EXPECT_EQ(dataPtr[3], 0xff);
CGContextFlush(context);
// We should now see the blue fill rect
EXPECT_EQ(dataPtr[0], 0xff);
EXPECT_EQ(dataPtr[1], 0x00);
EXPECT_EQ(dataPtr[2], 0x00);
EXPECT_EQ(dataPtr[3], 0xff);
// Add some extra drawings
CGContextClearRect(context, CGRectMake(100, 100, 200, 300));
CGPoint center = _CGRectGetCenter(bounds);
CGMutablePathRef concentricCirclesPath = CGPathCreateMutable();
CGPathAddEllipseInRect(concentricCirclesPath, nullptr, _CGRectCenteredOnPoint({ 50, 50 }, center));
CGPathAddEllipseInRect(concentricCirclesPath, nullptr, _CGRectCenteredOnPoint({ 100, 100 }, center));
CGPathAddEllipseInRect(concentricCirclesPath, nullptr, _CGRectCenteredOnPoint({ 150, 150 }, center));
CGPathAddEllipseInRect(concentricCirclesPath, nullptr, _CGRectCenteredOnPoint({ 200, 200 }, center));
CGContextSetRGBFillColor(context, 1.0, 0.0, 0.0, 0.5);
CGContextSetRGBStrokeColor(context, 1.0, 0.0, 0.0, 1.0);
CGContextAddPath(context, concentricCirclesPath);
CGContextDrawPath(context, kCGPathFillStroke);
CGPathRelease(concentricCirclesPath);
_CGContextPopEndDraw(context);
}
//-----------------------------------------------------------------------------
void CGDrawContext::fillRadialGradient (CGraphicsPath* _path, const CGradient& gradient, const CPoint& center, CCoord radius, const CPoint& originOffset, bool evenOdd, CGraphicsTransform* t)
{
QuartzGraphicsPath* path = dynamic_cast<QuartzGraphicsPath*> (_path);
if (path == 0)
return;
const QuartzGradient* cgGradient = dynamic_cast<const QuartzGradient*> (&gradient);
if (cgGradient == 0)
return;
CGContextRef context = beginCGContext (true, getDrawMode ().integralMode ());
if (context)
{
if (getDrawMode ().integralMode ())
{
path->pixelAlign (this, t);
CGContextAddPath (context, path->getCGPathRef ());
}
else if (t)
{
CGContextSaveGState (context);
CGAffineTransform transform = QuartzGraphicsPath::createCGAffineTransform (*t);
CGContextConcatCTM (context, transform);
CGContextAddPath (context, path->getCGPathRef ());
CGContextRestoreGState (context);
}
else
CGContextAddPath (context, path->getCGPathRef ());
if (evenOdd)
CGContextEOClip (context);
else
CGContextClip (context);
CPoint startCenter = center + originOffset;
CGContextDrawRadialGradient (context, *cgGradient, CGPointFromCPoint (startCenter), 0, CGPointFromCPoint (center), static_cast<CGFloat> (radius), kCGGradientDrawsBeforeStartLocation | kCGGradientDrawsAfterEndLocation);
releaseCGContext (context);
}
}
void PlatformCALayer::drawRepaintIndicator(CGContextRef context, PlatformCALayer* platformCALayer, int repaintCount, CGColorRef customBackgroundColor)
{
char text[16]; // that's a lot of repaints
snprintf(text, sizeof(text), "%d", repaintCount);
FloatRect indicatorBox = platformCALayer->bounds();\
indicatorBox.setLocation( { 1, 1 } );
indicatorBox.setSize(FloatSize(12 + 10 * strlen(text), 27));
CGContextStateSaver stateSaver(context);
CGContextSetAlpha(context, 0.5f);
CGContextBeginTransparencyLayerWithRect(context, indicatorBox, 0);
if (customBackgroundColor)
CGContextSetFillColorWithColor(context, customBackgroundColor);
else
CGContextSetRGBFillColor(context, 0, 0.5f, 0.25f, 1);
if (platformCALayer->isOpaque())
CGContextFillRect(context, indicatorBox);
else {
Path boundsPath;
boundsPath.moveTo(indicatorBox.maxXMinYCorner());
boundsPath.addLineTo(indicatorBox.maxXMaxYCorner());
boundsPath.addLineTo(indicatorBox.minXMaxYCorner());
const float cornerChunk = 8;
boundsPath.addLineTo(FloatPoint(indicatorBox.x(), indicatorBox.y() + cornerChunk));
boundsPath.addLineTo(FloatPoint(indicatorBox.x() + cornerChunk, indicatorBox.y()));
boundsPath.closeSubpath();
CGContextAddPath(context, boundsPath.platformPath());
CGContextFillPath(context);
}
if (platformCALayer->owner()->isUsingDisplayListDrawing(platformCALayer)) {
CGContextSetRGBStrokeColor(context, 0, 0, 0, 0.65);
CGContextSetLineWidth(context, 2);
CGContextStrokeRect(context, indicatorBox);
}
if (platformCALayer->acceleratesDrawing())
CGContextSetRGBFillColor(context, 1, 0, 0, 1);
else
CGContextSetRGBFillColor(context, 1, 1, 1, 1);
platformCALayer->drawTextAtPoint(context, indicatorBox.x() + 5, indicatorBox.y() + 22, CGSizeMake(1, -1), 22, text, strlen(text));
CGContextEndTransparencyLayer(context);
}
void CanvasRenderingContext2D::stroke()
{
GraphicsContext* c = drawingContext();
if (!c)
return;
// FIXME: Do this through platform-independent GraphicsContext API.
#if PLATFORM(CG)
CGContextBeginPath(c->platformContext());
CGContextAddPath(c->platformContext(), state().m_path.platformPath());
if (!state().m_path.isEmpty()) {
float lineWidth = state().m_lineWidth;
float inset = -lineWidth / 2;
CGRect boundingRect = CGRectInset(CGContextGetPathBoundingBox(c->platformContext()), inset, inset);
willDraw(boundingRect);
}
if (state().m_strokeStyle->gradient()) {
// Shading works on the entire clip region, so convert the current path to a clip.
c->save();
CGContextReplacePathWithStrokedPath(c->platformContext());
CGContextClip(c->platformContext());
CGContextDrawShading(c->platformContext(), state().m_strokeStyle->gradient()->platformShading());
c->restore();
} else {
if (state().m_strokeStyle->pattern())
applyStrokePattern();
CGContextStrokePath(c->platformContext());
}
#elif PLATFORM(QT)
QPainterPath* path = state().m_path.platformPath();
QPainter* p = static_cast<QPainter*>(c->platformContext());
willDraw(path->controlPointRect());
if (state().m_strokeStyle->gradient()) {
p->save();
p->setBrush(*(state().m_strokeStyle->gradient()->platformShading()));
p->strokePath(*path, p->pen());
p->restore();
} else {
if (state().m_strokeStyle->pattern())
applyStrokePattern();
p->strokePath(*path, p->pen());
}
#endif
clearPathForDashboardBackwardCompatibilityMode();
}
bool Path::strokeContains(StrokeStyleApplier* applier, const FloatPoint& point) const
{
ASSERT(applier);
CGContextRef context = scratchContext();
CGContextSaveGState(context);
CGContextBeginPath(context);
CGContextAddPath(context, platformPath());
GraphicsContext gc(context);
applier->strokeStyle(&gc);
bool hitSuccess = CGContextPathContainsPoint(context, point, kCGPathStroke);
CGContextRestoreGState(context);
return hitSuccess;
}
void GraphicsContext::clipPath(const Path& path, WindRule clipRule)
{
if (paintingDisabled())
return;
if (path.isEmpty())
return;
CGContextRef context = platformContext();
CGContextBeginPath(platformContext());
CGContextAddPath(platformContext(), path.platformPath());
if (clipRule == RULE_EVENODD)
CGContextEOClip(context);
else
CGContextClip(context);
}
void GraphicsContext::clip(const Path& path)
{
if (paintingDisabled())
return;
CGContextRef context = platformContext();
// CGContextClip does nothing if the path is empty, so in this case, we
// instead clip against a zero rect to reduce the clipping region to
// nothing - which is the intended behavior of clip() if the path is empty.
if (path.isEmpty())
CGContextClipToRect(context, CGRectZero);
else {
CGContextBeginPath(context);
CGContextAddPath(context, path.platformPath());
CGContextClip(context);
}
m_data->clip(path);
}
FloatRect Path::strokeBoundingRect(StrokeStyleApplier* applier) const
{
CGContextRef context = scratchContext();
CGContextSaveGState(context);
CGContextBeginPath(context);
CGContextAddPath(context, platformPath());
if (applier) {
GraphicsContext graphicsContext(context);
applier->strokeStyle(&graphicsContext);
}
CGContextReplacePathWithStrokedPath(context);
CGRect box = CGContextIsPathEmpty(context) ? CGRectZero : CGContextGetPathBoundingBox(context);
CGContextRestoreGState(context);
return box;
}
void TIPGradientAxialFillPath( CGContextRef theContext, TIPGradientRef theGradient, CGPathRef thePath, float angle)
{
CGRect boundingRect = CGPathGetBoundingBox(thePath);
CGPoint startPoint;
CGPoint endPoint;
TIPGradientFindEndpointsForRotation(boundingRect,angle,&startPoint,&endPoint);
// CoreGraphics Calls
CGContextSaveGState(theContext);
CGColorSpaceRef colorSpace = CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB);
CGShadingRef myCGShading = CGShadingCreateAxial(colorSpace,startPoint,endPoint,theGradient->gradientFunction,FALSE,FALSE);
CGContextAddPath(theContext,thePath);
CGContextClip(theContext);
CGContextDrawShading(theContext,myCGShading);
CGShadingRelease(myCGShading);
CGColorSpaceRelease(colorSpace);
CGContextRestoreGState(theContext);
}
void doRotatedEllipsesWithCGPath(CGContextRef context)
{
int i, totreps = 144.;
CGMutablePathRef path = NULL;
float tint = 1., tintIncrement = 1./totreps;
// Create a new transform consisting of a 45 degree rotation.
CGAffineTransform theTransform = CGAffineTransformMakeRotation(M_PI/4);
// Apply a scaling transformation to the transform just created.
theTransform = CGAffineTransformScale(theTransform, 1, 2);
// Create a mutable CGPath object.
path = CGPathCreateMutable();
if(!path){
fprintf(stderr, "Couldn't create path!\n");
return;
}
// Add a circular arc to the CGPath object, transformed
// by an affine transform.
CGPathAddArc(path, &theTransform, 0., 0., 45., 0., 2*M_PI, false);
// Close the CGPath object.
CGPathCloseSubpath(path);
// Place the first ellipse at a good location.
CGContextTranslateCTM(context, 100., 100.);
for (i = 0 ; i < totreps ; i++){
CGContextBeginPath(context);
// Add the CGPath object to the current path in the context.
CGContextAddPath(context, path);
// Set the fill color for this instance of the ellipse.
CGContextSetRGBFillColor(context, tint, 0., 0., 1.);
// Filling the path implicitly closes it.
CGContextFillPath(context);
// Compute the next tint color.
tint -= tintIncrement;
// Move over for the next ellipse.
CGContextTranslateCTM(context, 1, 0.);
}
// Release the path when done with it.
CGPathRelease(path);
}
void GraphicsContext::clipPath(const Path& path, WindRule clipRule)
{
if (paintingDisabled())
return;
// FIXME: Why does this method ignore empty paths?
if (path.isEmpty())
return;
wxGraphicsContext* gc = m_data->context->GetGraphicsContext();
#if wxUSE_CAIRO
cairo_t* cr = (cairo_t*)gc->GetNativeContext();
cairo_path_t* nativePath = (cairo_path_t*)path.platformPath()->GetNativePath();
cairo_new_path(cr);
cairo_append_path(cr, nativePath);
cairo_set_fill_rule(cr, clipRule == RULE_EVENODD ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
cairo_clip(cr);
#elif __WXMAC__
CGContextRef context = (CGContextRef)gc->GetNativeContext();
CGPathRef nativePath = (CGPathRef)path.platformPath()->GetNativePath();
CGContextBeginPath(context);
CGContextAddPath(context, nativePath);
if (clipRule == RULE_EVENODD)
CGContextEOClip(context);
else
CGContextClip(context);
#elif __WXMSW__
Gdiplus::Graphics* g = (Gdiplus::Graphics*)gc->GetNativeContext();
Gdiplus::GraphicsPath* nativePath = (Gdiplus::GraphicsPath*)path.platformPath()->GetNativePath();
if (clipRule == RULE_EVENODD)
nativePath->SetFillMode(Gdiplus::FillModeAlternate);
else
nativePath->SetFillMode(Gdiplus::FillModeWinding);
g->SetClip(nativePath);
#endif
}
CGContextRef BitLockerSkia::cgContext()
{
SkDevice* device = m_canvas->getDevice();
ASSERT(device);
if (!device)
return 0;
releaseIfNeeded();
const SkBitmap& bitmap = device->accessBitmap(true);
bitmap.lockPixels();
void* pixels = bitmap.getPixels();
m_cgContext = CGBitmapContextCreate(pixels, device->width(),
device->height(), 8, bitmap.rowBytes(), CGColorSpaceCreateDeviceRGB(),
kCGBitmapByteOrder32Host | kCGImageAlphaPremultipliedFirst);
// Apply device matrix.
CGAffineTransform contentsTransform = CGAffineTransformMakeScale(1, -1);
contentsTransform = CGAffineTransformTranslate(contentsTransform, 0, -device->height());
CGContextConcatCTM(m_cgContext, contentsTransform);
// Apply clip in device coordinates.
CGMutablePathRef clipPath = CGPathCreateMutable();
SkRegion::Iterator iter(m_canvas->getTotalClip());
for (; !iter.done(); iter.next()) {
IntRect rect = iter.rect();
CGPathAddRect(clipPath, 0, rect);
}
CGContextAddPath(m_cgContext, clipPath);
CGContextClip(m_cgContext);
CGPathRelease(clipPath);
// Apply content matrix.
const SkMatrix& skMatrix = m_canvas->getTotalMatrix();
CGAffineTransform affine = SkMatrixToCGAffineTransform(skMatrix);
CGContextConcatCTM(m_cgContext, affine);
return m_cgContext;
}
bool RenderPath::strokeContains(const FloatPoint& point, bool requiresStroke) const
{
if (path().isEmpty())
return false;
if (requiresStroke && !SVGPaintServer::strokePaintServer(style(), this))
return false;
CGMutablePathRef cgPath = path().platformPath();
CGContextRef context = scratchContext();
CGContextSaveGState(context);
CGContextBeginPath(context);
CGContextAddPath(context, cgPath);
GraphicsContext gc(context);
applyStrokeStyleToContext(&gc, style(), this);
bool hitSuccess = CGContextPathContainsPoint(context, point, kCGPathStroke);
CGContextRestoreGState(context);
return hitSuccess;
}
void GraphicsContext::strokePath(const Path& path)
{
if (paintingDisabled())
return;
CGContextRef context = platformContext();
CGContextBeginPath(context);
CGContextAddPath(context, path.platformPath());
if (m_state.strokeGradient) {
CGContextSaveGState(context);
CGContextReplacePathWithStrokedPath(context);
CGContextClip(context);
CGContextConcatCTM(context, m_state.strokeGradient->gradientSpaceTransform());
m_state.strokeGradient->paint(this);
CGContextRestoreGState(context);
return;
}
if (m_state.strokePattern)
applyStrokePattern();
CGContextStrokePath(context);
}
static void drawGDIGlyphs(GraphicsContext* graphicsContext, const SimpleFontData* font, const GlyphBuffer& glyphBuffer,
int from, int numGlyphs, const FloatPoint& point)
{
Color fillColor = graphicsContext->fillColor();
bool drawIntoBitmap = false;
TextDrawingModeFlags drawingMode = graphicsContext->textDrawingMode();
if (drawingMode == TextModeFill) {
if (!fillColor.alpha())
return;
drawIntoBitmap = fillColor.alpha() != 255 || graphicsContext->inTransparencyLayer();
if (!drawIntoBitmap) {
FloatSize offset;
float blur;
Color color;
ColorSpace shadowColorSpace;
graphicsContext->getShadow(offset, blur, color, shadowColorSpace);
drawIntoBitmap = offset.width() || offset.height() || blur;
}
}
// We have to convert CG's two-dimensional floating point advances to just horizontal integer advances.
Vector<int, 2048> gdiAdvances;
int totalWidth = 0;
for (int i = 0; i < numGlyphs; i++) {
gdiAdvances.append(lroundf(glyphBuffer.advanceAt(from + i)));
totalWidth += gdiAdvances[i];
}
HDC hdc = 0;
OwnPtr<GraphicsContext::WindowsBitmap> bitmap;
IntRect textRect;
if (!drawIntoBitmap)
hdc = graphicsContext->getWindowsContext(textRect, true, false);
if (!hdc) {
drawIntoBitmap = true;
// We put slop into this rect, since glyphs can overflow the ascent/descent bounds and the left/right edges.
// FIXME: Can get glyphs' optical bounds (even from CG) to get this right.
const FontMetrics& fontMetrics = font->fontMetrics();
int lineGap = fontMetrics.lineGap();
textRect = IntRect(point.x() - (fontMetrics.ascent() + fontMetrics.descent()) / 2,
point.y() - fontMetrics.ascent() - lineGap,
totalWidth + fontMetrics.ascent() + fontMetrics.descent(),
fontMetrics.lineSpacing());
bitmap = graphicsContext->createWindowsBitmap(textRect.size());
memset(bitmap->buffer(), 255, bitmap->bufferLength());
hdc = bitmap->hdc();
XFORM xform;
xform.eM11 = 1.0f;
xform.eM12 = 0.0f;
xform.eM21 = 0.0f;
xform.eM22 = 1.0f;
xform.eDx = -textRect.x();
xform.eDy = -textRect.y();
SetWorldTransform(hdc, &xform);
}
SelectObject(hdc, font->platformData().hfont());
// Set the correct color.
if (drawIntoBitmap)
SetTextColor(hdc, RGB(0, 0, 0));
else
SetTextColor(hdc, RGB(fillColor.red(), fillColor.green(), fillColor.blue()));
SetBkMode(hdc, TRANSPARENT);
SetTextAlign(hdc, TA_LEFT | TA_BASELINE);
// Uniscribe gives us offsets to help refine the positioning of combining glyphs.
FloatSize translation = glyphBuffer.offsetAt(from);
if (translation.width() || translation.height()) {
XFORM xform;
xform.eM11 = 1.0;
xform.eM12 = 0;
xform.eM21 = 0;
xform.eM22 = 1.0;
xform.eDx = translation.width();
xform.eDy = translation.height();
ModifyWorldTransform(hdc, &xform, MWT_LEFTMULTIPLY);
}
if (drawingMode == TextModeFill) {
XFORM xform;
xform.eM11 = 1.0;
xform.eM12 = 0;
xform.eM21 = font->platformData().syntheticOblique() ? -tanf(syntheticObliqueAngle * piFloat / 180.0f) : 0;
xform.eM22 = 1.0;
xform.eDx = point.x();
xform.eDy = point.y();
ModifyWorldTransform(hdc, &xform, MWT_LEFTMULTIPLY);
ExtTextOut(hdc, 0, 0, ETO_GLYPH_INDEX, 0, reinterpret_cast<const WCHAR*>(glyphBuffer.glyphs(from)), numGlyphs, gdiAdvances.data());
if (font->syntheticBoldOffset()) {
xform.eM21 = 0;
xform.eDx = font->syntheticBoldOffset();
xform.eDy = 0;
ModifyWorldTransform(hdc, &xform, MWT_LEFTMULTIPLY);
ExtTextOut(hdc, 0, 0, ETO_GLYPH_INDEX, 0, reinterpret_cast<const WCHAR*>(glyphBuffer.glyphs(from)), numGlyphs, gdiAdvances.data());
}
} else {
XFORM xform;
GetWorldTransform(hdc, &xform);
AffineTransform hdcTransform(xform.eM11, xform.eM21, xform.eM12, xform.eM22, xform.eDx, xform.eDy);
CGAffineTransform initialGlyphTransform = hdcTransform.isInvertible() ? hdcTransform.inverse() : CGAffineTransformIdentity;
if (font->platformData().syntheticOblique())
initialGlyphTransform = CGAffineTransformConcat(initialGlyphTransform, CGAffineTransformMake(1, 0, tanf(syntheticObliqueAngle * piFloat / 180.0f), 1, 0, 0));
initialGlyphTransform.tx = 0;
initialGlyphTransform.ty = 0;
CGContextRef cgContext = graphicsContext->platformContext();
CGContextSaveGState(cgContext);
BOOL fontSmoothingEnabled = false;
SystemParametersInfo(SPI_GETFONTSMOOTHING, 0, &fontSmoothingEnabled, 0);
CGContextSetShouldAntialias(cgContext, fontSmoothingEnabled);
CGContextScaleCTM(cgContext, 1.0, -1.0);
CGContextTranslateCTM(cgContext, point.x() + glyphBuffer.offsetAt(from).width(), -(point.y() + glyphBuffer.offsetAt(from).height()));
for (unsigned i = 0; i < numGlyphs; ++i) {
RetainPtr<CGPathRef> glyphPath(AdoptCF, createPathForGlyph(hdc, glyphBuffer.glyphAt(from + i)));
CGContextSaveGState(cgContext);
CGContextConcatCTM(cgContext, initialGlyphTransform);
if (drawingMode & TextModeFill) {
CGContextAddPath(cgContext, glyphPath.get());
CGContextFillPath(cgContext);
if (font->syntheticBoldOffset()) {
CGContextTranslateCTM(cgContext, font->syntheticBoldOffset(), 0);
CGContextAddPath(cgContext, glyphPath.get());
CGContextFillPath(cgContext);
CGContextTranslateCTM(cgContext, -font->syntheticBoldOffset(), 0);
}
}
if (drawingMode & TextModeStroke) {
CGContextAddPath(cgContext, glyphPath.get());
CGContextStrokePath(cgContext);
if (font->syntheticBoldOffset()) {
CGContextTranslateCTM(cgContext, font->syntheticBoldOffset(), 0);
CGContextAddPath(cgContext, glyphPath.get());
CGContextStrokePath(cgContext);
CGContextTranslateCTM(cgContext, -font->syntheticBoldOffset(), 0);
}
}
CGContextRestoreGState(cgContext);
CGContextTranslateCTM(cgContext, gdiAdvances[i], 0);
}
CGContextRestoreGState(cgContext);
}
if (drawIntoBitmap) {
UInt8* buffer = bitmap->buffer();
unsigned bufferLength = bitmap->bufferLength();
for (unsigned i = 0; i < bufferLength; i += 4) {
// Use green, which is always in the middle.
UInt8 alpha = (255 - buffer[i + 1]) * fillColor.alpha() / 255;
buffer[i] = fillColor.blue();
buffer[i + 1] = fillColor.green();
buffer[i + 2] = fillColor.red();
buffer[i + 3] = alpha;
}
graphicsContext->drawWindowsBitmap(bitmap.get(), textRect.location());
} else
graphicsContext->releaseWindowsContext(hdc, textRect, true, false);
}
void GraphicsContext::addPath(const Path& path)
{
CGContextAddPath(platformContext(), path.platformPath());
}
