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);
}
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);
}
oop CGContextGetPathBoundingBox_wrap(CGContextRef c) {
CGRect x = CGContextGetPathBoundingBox(c);
objVectorOop r = Memory->objVectorObj->cloneSize(4);
r->obj_at_put(0, as_floatOop(x.origin.x), false);
r->obj_at_put(1, as_floatOop(x.origin.y), false);
r->obj_at_put(2, as_floatOop(x.size.width), false);
r->obj_at_put(3, as_floatOop(x.size.height), false);
return r;
}
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();
}
JNIEXPORT void JNICALL OS_NATIVE(CGContextGetPathBoundingBox)
(JNIEnv *env, jclass that, jint arg0, jobject arg1)
{
CGRect _arg1, *lparg1=NULL;
OS_NATIVE_ENTER(env, that, CGContextGetPathBoundingBox_FUNC);
if (arg1) if ((lparg1 = getCGRectFields(env, arg1, &_arg1)) == NULL) goto fail;
*lparg1 = CGContextGetPathBoundingBox((CGContextRef)arg0);
fail:
if (arg1 && lparg1) setCGRectFields(env, arg1, lparg1);
OS_NATIVE_EXIT(env, that, CGContextGetPathBoundingBox_FUNC);
}
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();
}
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 SVGPaintServerGradient::renderPath(GraphicsContext*& context, const RenderPath* path, SVGPaintTargetType type) const
{
RenderStyle* style = path->style();
CGContextRef contextRef = context->platformContext();
ASSERT(contextRef);
// Compute destination object bounding box
FloatRect objectBBox;
if (boundingBoxMode())
objectBBox = CGContextGetPathBoundingBox(contextRef);
if ((type & ApplyToFillTargetType) && style->svgStyle()->hasFill())
clipToFillPath(contextRef, path);
if ((type & ApplyToStrokeTargetType) && style->svgStyle()->hasStroke())
clipToStrokePath(contextRef, path);
handleBoundingBoxModeAndGradientTransformation(context, objectBBox);
}
bool SVGPaintServerPattern::setup(GraphicsContext*& context, const RenderObject* object, SVGPaintTargetType type, bool isPaintingText) const
{
CGContextRef contextRef = context->platformContext();
// Build pattern tile, passing destination object bounding box
FloatRect targetRect;
if (isPaintingText) {
IntRect textBoundary = const_cast<RenderObject*>(object)->absoluteBoundingBoxRect();
targetRect = object->absoluteTransform().inverse().mapRect(textBoundary);
} else
targetRect = CGContextGetPathBoundingBox(contextRef);
m_ownerElement->buildPattern(targetRect);
if (!tile())
return false;
CGSize cellSize = CGSize(tile()->size());
CGFloat alpha = 1; // canvasStyle->opacity(); //which?
context->save();
// Repesct local pattern transformations
CGContextConcatCTM(contextRef, patternTransform());
// Pattern space seems to start in the lower-left, so we flip the Y here.
CGSize phase = CGSizeMake(patternBoundaries().x(), -patternBoundaries().y());
CGContextSetPatternPhase(contextRef, phase);
RenderStyle* style = object->style();
CGContextSetAlpha(contextRef, style->opacity()); // or do I set the alpha above?
ASSERT(!m_pattern);
CGPatternCallbacks callbacks = {0, patternCallback, NULL};
m_pattern = CGPatternCreate(tile(),
CGRectMake(0, 0, cellSize.width, cellSize.height),
CGContextGetCTM(contextRef),
patternBoundaries().width(),
patternBoundaries().height(),
kCGPatternTilingConstantSpacing, // FIXME: should ask CG guys.
true, // has color
&callbacks);
if (!m_patternSpace)
m_patternSpace = CGColorSpaceCreatePattern(0);
if ((type & ApplyToFillTargetType) && style->svgStyle()->hasFill()) {
CGContextSetFillColorSpace(contextRef, m_patternSpace);
CGContextSetFillPattern(contextRef, m_pattern, &alpha);
if (isPaintingText)
context->setTextDrawingMode(cTextFill);
}
if ((type & ApplyToStrokeTargetType) && style->svgStyle()->hasStroke()) {
CGContextSetStrokeColorSpace(contextRef, m_patternSpace);
CGContextSetStrokePattern(contextRef, m_pattern, &alpha);
applyStrokeStyleToContext(contextRef, style, object);
if (isPaintingText)
context->setTextDrawingMode(cTextStroke);
}
return true;
}
