/* Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann 2004, 2005, 2007, 2008 Rob Buis 2007 Eric Seidel This file is part of the KDE project This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License aint with this library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #include "config.h" #if ENABLE(SVG) #include "RenderSVGContainer.h" #include "AXObjectCache.h" #include "FloatQuad.h" #include "GraphicsContext.h" #include "RenderView.h" #include "SVGRenderSupport.h" #include "SVGResourceFilter.h" #include "SVGStyledElement.h" #include "SVGURIReference.h" namespace WebCore { RenderSVGContainer::RenderSVGContainer(SVGStyledElement* node) : RenderObject(node) , m_width(0) , m_height(0) , m_drawsContents(true) { } RenderSVGContainer::~RenderSVGContainer() { } bool RenderSVGContainer::drawsContents() const { return m_drawsContents; } void RenderSVGContainer::setDrawsContents(bool drawsContents) { m_drawsContents = drawsContents; } TransformationMatrix RenderSVGContainer::localTransform() const { return m_localTransform; } int RenderSVGContainer::lineHeight(bool, bool) const { return height(); } int RenderSVGContainer::baselinePosition(bool, bool) const { return height(); } bool RenderSVGContainer::calculateLocalTransform() { // subclasses can override this to add transform support return false; } void RenderSVGContainer::layout() { ASSERT(needsLayout()); // Arbitrary affine transforms are incompatible with LayoutState. view()->disableLayoutState(); // FIXME: using m_absoluteBounds breaks if containerForRepaint() is not the root LayoutRepainter repainter(*this, checkForRepaintDuringLayout() && selfWillPaint(), &m_absoluteBounds); calculateLocalTransform(); for (RenderObject* child = firstChild(); child; child = child->nextSibling()) { // Only force our kids to layout if we're being asked to relayout as a result of a parent changing // FIXME: We should be able to skip relayout of non-relative kids when only bounds size has changed // that's a possible future optimization using LayoutState // http://bugs.webkit.org/show_bug.cgi?id=15391 if (selfNeedsLayout()) child->setNeedsLayout(true); child->layoutIfNeeded(); ASSERT(!child->needsLayout()); } calcBounds(); repainter.repaintAfterLayout(); view()->enableLayoutState(); setNeedsLayout(false); } int RenderSVGContainer::calcReplacedWidth() const { switch (style()->width().type()) { case Fixed: return max(0, style()->width().value()); case Percent: { const int cw = containingBlock()->availableWidth(); return cw > 0 ? max(0, style()->width().calcMinValue(cw)) : 0; } default: return 0; } } int RenderSVGContainer::calcReplacedHeight() const { switch (style()->height().type()) { case Fixed: return max(0, style()->height().value()); case Percent: { RenderBlock* cb = containingBlock(); return style()->height().calcValue(cb->availableHeight()); } default: return 0; } } void RenderSVGContainer::applyContentTransforms(PaintInfo& paintInfo) { if (!localTransform().isIdentity()) paintInfo.context->concatCTM(localTransform()); } void RenderSVGContainer::applyAdditionalTransforms(PaintInfo&) { // no-op } void RenderSVGContainer::calcBounds() { m_width = calcReplacedWidth(); m_height = calcReplacedHeight(); m_absoluteBounds = absoluteClippedOverflowRect(); } bool RenderSVGContainer::selfWillPaint() const { #if ENABLE(SVG_FILTERS) const SVGRenderStyle* svgStyle = style()->svgStyle(); SVGResourceFilter* filter = getFilterById(document(), svgStyle->filter()); if (filter) return true; #endif return false; } void RenderSVGContainer::paint(PaintInfo& paintInfo, int, int) { if (paintInfo.context->paintingDisabled() || !drawsContents()) return; // Spec: groups w/o children still may render filter content. if (!firstChild() && !selfWillPaint()) return; paintInfo.context->save(); applyContentTransforms(paintInfo); SVGResourceFilter* filter = 0; PaintInfo savedInfo(paintInfo); FloatRect boundingBox = relativeBBox(true); if (paintInfo.phase == PaintPhaseForeground) prepareToRenderSVGContent(this, paintInfo, boundingBox, filter); applyAdditionalTransforms(paintInfo); // default implementation. Just pass paint through to the children PaintInfo childInfo(paintInfo); childInfo.paintingRoot = paintingRootForChildren(paintInfo); for (RenderObject* child = firstChild(); child; child = child->nextSibling()) child->paint(childInfo, 0, 0); if (paintInfo.phase == PaintPhaseForeground) finishRenderSVGContent(this, paintInfo, boundingBox, filter, savedInfo.context); paintInfo.context->restore(); if ((paintInfo.phase == PaintPhaseOutline || paintInfo.phase == PaintPhaseSelfOutline) && style()->outlineWidth() && style()->visibility() == VISIBLE) paintOutline(paintInfo.context, m_absoluteBounds.x(), m_absoluteBounds.y(), m_absoluteBounds.width(), m_absoluteBounds.height(), style()); } TransformationMatrix RenderSVGContainer::viewportTransform() const { return TransformationMatrix(); } IntRect RenderSVGContainer::clippedOverflowRectForRepaint(RenderBoxModelObject* repaintContainer) { FloatRect repaintRect; for (RenderObject* current = firstChild(); current != 0; current = current->nextSibling()) repaintRect.unite(current->clippedOverflowRectForRepaint(repaintContainer)); #if ENABLE(SVG_FILTERS) // Filters can expand the bounding box SVGResourceFilter* filter = getFilterById(document(), style()->svgStyle()->filter()); if (filter) repaintRect.unite(filter->filterBBoxForItemBBox(repaintRect)); #endif if (!repaintRect.isEmpty()) repaintRect.inflate(1); // inflate 1 pixel for antialiasing return enclosingIntRect(repaintRect); } void RenderSVGContainer::addFocusRingRects(GraphicsContext* graphicsContext, int, int) { graphicsContext->addFocusRingRect(m_absoluteBounds); } void RenderSVGContainer::absoluteRects(Vector& rects, int, int, bool) { rects.append(absoluteClippedOverflowRect()); } void RenderSVGContainer::absoluteQuads(Vector& quads, bool) { quads.append(absoluteClippedOverflowRect()); } FloatRect RenderSVGContainer::relativeBBox(bool includeStroke) const { FloatRect rect; RenderObject* current = firstChild(); for (; current != 0; current = current->nextSibling()) { FloatRect childBBox = current->relativeBBox(includeStroke); FloatRect mappedBBox = current->localTransform().mapRect(childBBox); // can have a viewBox contributing to the bbox if (current->isSVGContainer()) mappedBBox = static_cast(current)->viewportTransform().mapRect(mappedBBox); rect.unite(mappedBBox); } return rect; } bool RenderSVGContainer::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, int _x, int _y, int _tx, int _ty, HitTestAction hitTestAction) { for (RenderObject* child = lastChild(); child; child = child->previousSibling()) { if (child->nodeAtPoint(request, result, _x, _y, _tx, _ty, hitTestAction)) { updateHitTestResult(result, IntPoint(_x - _tx, _y - _ty)); return true; } } // Spec: Only graphical elements can be targeted by the mouse, period. // 16.4: "If there are no graphics elements whose relevant graphics content is under the pointer (i.e., there is no target element), the event is not dispatched." return false; } IntRect RenderSVGContainer::outlineBoundsForRepaint(RenderBoxModelObject* /*repaintContainer*/) const { // FIXME: handle non-root repaintContainer IntRect result = m_absoluteBounds; adjustRectForOutlineAndShadow(result); return result; } } #endif // ENABLE(SVG) // vim:ts=4:noet