| /* | |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | |
| * (C) 1999 Antti Koivisto (koivisto@kde.org) | |
| * (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com) | |
| * (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com) | |
| * Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. | |
| * | |
| * 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 | |
| * along 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" | |
| #include "RenderBoxModelObject.h" | |
| #include "GraphicsContext.h" | |
| #include "HTMLElement.h" | |
| #include "HTMLNames.h" | |
| #include "ImageBuffer.h" | |
| #include "RenderBlock.h" | |
| #include "RenderInline.h" | |
| #include "RenderLayer.h" | |
| #include "RenderView.h" | |
| #include <wtf/CurrentTime.h> | |
| using namespace std; | |
| namespace WebCore { | |
| using namespace HTMLNames; | |
| bool RenderBoxModelObject::s_wasFloating = false; | |
| bool RenderBoxModelObject::s_hadLayer = false; | |
| bool RenderBoxModelObject::s_layerWasSelfPainting = false; | |
| static const double cInterpolationCutoff = 800. * 800.; | |
| static const double cLowQualityTimeThreshold = 0.500; // 500 ms | |
| class RenderBoxModelScaleData : public Noncopyable { | |
| public: | |
| RenderBoxModelScaleData(RenderBoxModelObject* object, const IntSize& size, const AffineTransform& transform, double time, bool lowQualityScale) | |
| : m_size(size) | |
| , m_transform(transform) | |
| , m_lastPaintTime(time) | |
| , m_lowQualityScale(lowQualityScale) | |
| , m_highQualityRepaintTimer(object, &RenderBoxModelObject::highQualityRepaintTimerFired) | |
| { | |
| } | |
| ~RenderBoxModelScaleData() | |
| { | |
| m_highQualityRepaintTimer.stop(); | |
| } | |
| Timer<RenderBoxModelObject>& hiqhQualityRepaintTimer() { return m_highQualityRepaintTimer; } | |
| const IntSize& size() const { return m_size; } | |
| void setSize(const IntSize& s) { m_size = s; } | |
| double lastPaintTime() const { return m_lastPaintTime; } | |
| void setLastPaintTime(double t) { m_lastPaintTime = t; } | |
| bool useLowQualityScale() const { return m_lowQualityScale; } | |
| const AffineTransform& transform() const { return m_transform; } | |
| void setTransform(const AffineTransform& transform) { m_transform = transform; } | |
| void setUseLowQualityScale(bool b) | |
| { | |
| m_highQualityRepaintTimer.stop(); | |
| m_lowQualityScale = b; | |
| if (b) | |
| m_highQualityRepaintTimer.startOneShot(cLowQualityTimeThreshold); | |
| } | |
| private: | |
| IntSize m_size; | |
| AffineTransform m_transform; | |
| double m_lastPaintTime; | |
| bool m_lowQualityScale; | |
| Timer<RenderBoxModelObject> m_highQualityRepaintTimer; | |
| }; | |
| class RenderBoxModelScaleObserver { | |
| public: | |
| static bool shouldPaintBackgroundAtLowQuality(GraphicsContext*, RenderBoxModelObject*, Image*, const IntSize&); | |
| static void boxModelObjectDestroyed(RenderBoxModelObject* object) | |
| { | |
| if (gBoxModelObjects) { | |
| RenderBoxModelScaleData* data = gBoxModelObjects->take(object); | |
| delete data; | |
| if (!gBoxModelObjects->size()) { | |
| delete gBoxModelObjects; | |
| gBoxModelObjects = 0; | |
| } | |
| } | |
| } | |
| static void highQualityRepaintTimerFired(RenderBoxModelObject* object) | |
| { | |
| RenderBoxModelScaleObserver::boxModelObjectDestroyed(object); | |
| object->repaint(); | |
| } | |
| static HashMap<RenderBoxModelObject*, RenderBoxModelScaleData*>* gBoxModelObjects; | |
| }; | |
| bool RenderBoxModelScaleObserver::shouldPaintBackgroundAtLowQuality(GraphicsContext* context, RenderBoxModelObject* object, Image* image, const IntSize& size) | |
| { | |
| // If the image is not a bitmap image, then none of this is relevant and we just paint at high | |
| // quality. | |
| if (!image || !image->isBitmapImage()) | |
| return false; | |
| // Make sure to use the unzoomed image size, since if a full page zoom is in effect, the image | |
| // is actually being scaled. | |
| IntSize imageSize(image->width(), image->height()); | |
| // Look ourselves up in the hashtable. | |
| RenderBoxModelScaleData* data = 0; | |
| if (gBoxModelObjects) | |
| data = gBoxModelObjects->get(object); | |
| const AffineTransform& currentTransform = context->getCTM(); | |
| bool contextIsScaled = !currentTransform.isIdentityOrTranslationOrFlipped(); | |
| if (!contextIsScaled && imageSize == size) { | |
| // There is no scale in effect. If we had a scale in effect before, we can just delete this data. | |
| if (data) { | |
| gBoxModelObjects->remove(object); | |
| delete data; | |
| } | |
| return false; | |
| } | |
| // There is no need to hash scaled images that always use low quality mode when the page demands it. This is the iChat case. | |
| if (object->document()->page()->inLowQualityImageInterpolationMode()) { | |
| double totalPixels = static_cast<double>(image->width()) * static_cast<double>(image->height()); | |
| if (totalPixels > cInterpolationCutoff) | |
| return true; | |
| } | |
| // If there is no data yet, we will paint the first scale at high quality and record the paint time in case a second scale happens | |
| // very soon. | |
| if (!data) { | |
| data = new RenderBoxModelScaleData(object, size, currentTransform, currentTime(), false); | |
| if (!gBoxModelObjects) | |
| gBoxModelObjects = new HashMap<RenderBoxModelObject*, RenderBoxModelScaleData*>; | |
| gBoxModelObjects->set(object, data); | |
| return false; | |
| } | |
| const AffineTransform& tr = data->transform(); | |
| bool scaleUnchanged = tr.a() == currentTransform.a() && tr.b() == currentTransform.b() && tr.c() == currentTransform.c() && tr.d() == currentTransform.d(); | |
| // We are scaled, but we painted already at this size, so just keep using whatever mode we last painted with. | |
| if ((!contextIsScaled || scaleUnchanged) && data->size() == size) | |
| return data->useLowQualityScale(); | |
| // We have data and our size just changed. If this change happened quickly, go into low quality mode and then set a repaint | |
| // timer to paint in high quality mode. Otherwise it is ok to just paint in high quality mode. | |
| double newTime = currentTime(); | |
| data->setUseLowQualityScale(newTime - data->lastPaintTime() < cLowQualityTimeThreshold); | |
| data->setLastPaintTime(newTime); | |
| data->setTransform(currentTransform); | |
| data->setSize(size); | |
| return data->useLowQualityScale(); | |
| } | |
| HashMap<RenderBoxModelObject*, RenderBoxModelScaleData*>* RenderBoxModelScaleObserver::gBoxModelObjects = 0; | |
| void RenderBoxModelObject::highQualityRepaintTimerFired(Timer<RenderBoxModelObject>*) | |
| { | |
| RenderBoxModelScaleObserver::highQualityRepaintTimerFired(this); | |
| } | |
| RenderBoxModelObject::RenderBoxModelObject(Node* node) | |
| : RenderObject(node) | |
| , m_layer(0) | |
| { | |
| } | |
| RenderBoxModelObject::~RenderBoxModelObject() | |
| { | |
| // Our layer should have been destroyed and cleared by now | |
| ASSERT(!hasLayer()); | |
| ASSERT(!m_layer); | |
| RenderBoxModelScaleObserver::boxModelObjectDestroyed(this); | |
| } | |
| void RenderBoxModelObject::destroyLayer() | |
| { | |
| ASSERT(!hasLayer()); // Callers should have already called setHasLayer(false) | |
| ASSERT(m_layer); | |
| m_layer->destroy(renderArena()); | |
| m_layer = 0; | |
| } | |
| void RenderBoxModelObject::destroy() | |
| { | |
| // This must be done before we destroy the RenderObject. | |
| if (m_layer) | |
| m_layer->clearClipRects(); | |
| // RenderObject::destroy calls back to destroyLayer() for layer destruction | |
| RenderObject::destroy(); | |
| } | |
| bool RenderBoxModelObject::hasSelfPaintingLayer() const | |
| { | |
| return m_layer && m_layer->isSelfPaintingLayer(); | |
| } | |
| void RenderBoxModelObject::styleWillChange(StyleDifference diff, const RenderStyle* newStyle) | |
| { | |
| s_wasFloating = isFloating(); | |
| s_hadLayer = hasLayer(); | |
| if (s_hadLayer) | |
| s_layerWasSelfPainting = layer()->isSelfPaintingLayer(); | |
| // If our z-index changes value or our visibility changes, | |
| // we need to dirty our stacking context's z-order list. | |
| if (style() && newStyle) { | |
| if (parent()) { | |
| // Do a repaint with the old style first, e.g., for example if we go from | |
| // having an outline to not having an outline. | |
| if (diff == StyleDifferenceRepaintLayer) { | |
| layer()->repaintIncludingDescendants(); | |
| if (!(style()->clip() == newStyle->clip())) | |
| layer()->clearClipRectsIncludingDescendants(); | |
| } else if (diff == StyleDifferenceRepaint || newStyle->outlineSize() < style()->outlineSize()) | |
| repaint(); | |
| } | |
| if (diff == StyleDifferenceLayout) { | |
| // When a layout hint happens, we go ahead and do a repaint of the layer, since the layer could | |
| // end up being destroyed. | |
| if (hasLayer()) { | |
| if (style()->position() != newStyle->position() || | |
| style()->zIndex() != newStyle->zIndex() || | |
| style()->hasAutoZIndex() != newStyle->hasAutoZIndex() || | |
| !(style()->clip() == newStyle->clip()) || | |
| style()->hasClip() != newStyle->hasClip() || | |
| style()->opacity() != newStyle->opacity() || | |
| style()->transform() != newStyle->transform()) | |
| layer()->repaintIncludingDescendants(); | |
| } else if (newStyle->hasTransform() || newStyle->opacity() < 1) { | |
| // If we don't have a layer yet, but we are going to get one because of transform or opacity, | |
| // then we need to repaint the old position of the object. | |
| repaint(); | |
| } | |
| } | |
| if (hasLayer() && (style()->hasAutoZIndex() != newStyle->hasAutoZIndex() || | |
| style()->zIndex() != newStyle->zIndex() || | |
| style()->visibility() != newStyle->visibility())) { | |
| layer()->dirtyStackingContextZOrderLists(); | |
| if (style()->hasAutoZIndex() != newStyle->hasAutoZIndex() || style()->visibility() != newStyle->visibility()) | |
| layer()->dirtyZOrderLists(); | |
| } | |
| } | |
| RenderObject::styleWillChange(diff, newStyle); | |
| } | |
| void RenderBoxModelObject::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle) | |
| { | |
| RenderObject::styleDidChange(diff, oldStyle); | |
| updateBoxModelInfoFromStyle(); | |
| if (requiresLayer()) { | |
| if (!layer()) { | |
| if (s_wasFloating && isFloating()) | |
| setChildNeedsLayout(true); | |
| m_layer = new (renderArena()) RenderLayer(this); | |
| setHasLayer(true); | |
| m_layer->insertOnlyThisLayer(); | |
| if (parent() && !needsLayout() && containingBlock()) | |
| m_layer->updateLayerPositions(); | |
| } | |
| } else if (layer() && layer()->parent()) { | |
| setHasTransform(false); // Either a transform wasn't specified or the object doesn't support transforms, so just null out the bit. | |
| setHasReflection(false); | |
| m_layer->removeOnlyThisLayer(); // calls destroyLayer() which clears m_layer | |
| if (s_wasFloating && isFloating()) | |
| setChildNeedsLayout(true); | |
| } | |
| if (layer()) { | |
| layer()->styleChanged(diff, oldStyle); | |
| if (s_hadLayer && layer()->isSelfPaintingLayer() != s_layerWasSelfPainting) | |
| setChildNeedsLayout(true); | |
| } | |
| } | |
| void RenderBoxModelObject::updateBoxModelInfoFromStyle() | |
| { | |
| // Set the appropriate bits for a box model object. Since all bits are cleared in styleWillChange, | |
| // we only check for bits that could possibly be set to true. | |
| setHasBoxDecorations(style()->hasBorder() || style()->hasBackground() || style()->hasAppearance() || style()->boxShadow()); | |
| setInline(style()->isDisplayInlineType()); | |
| setRelPositioned(style()->position() == RelativePosition); | |
| } | |
| int RenderBoxModelObject::relativePositionOffsetX() const | |
| { | |
| // Objects that shrink to avoid floats normally use available line width when computing containing block width. However | |
| // in the case of relative positioning using percentages, we can't do this. The offset should always be resolved using the | |
| // available width of the containing block. Therefore we don't use containingBlockWidthForContent() here, but instead explicitly | |
| // call availableWidth on our containing block. | |
| if (!style()->left().isAuto()) { | |
| RenderBlock* cb = containingBlock(); | |
| if (!style()->right().isAuto() && containingBlock()->style()->direction() == RTL) | |
| return -style()->right().calcValue(cb->availableWidth()); | |
| return style()->left().calcValue(cb->availableWidth()); | |
| } | |
| if (!style()->right().isAuto()) { | |
| RenderBlock* cb = containingBlock(); | |
| return -style()->right().calcValue(cb->availableWidth()); | |
| } | |
| return 0; | |
| } | |
| int RenderBoxModelObject::relativePositionOffsetY() const | |
| { | |
| if (!style()->top().isAuto()) | |
| return style()->top().calcValue(containingBlock()->availableHeight()); | |
| else if (!style()->bottom().isAuto()) | |
| return -style()->bottom().calcValue(containingBlock()->availableHeight()); | |
| return 0; | |
| } | |
| int RenderBoxModelObject::offsetLeft() const | |
| { | |
| // If the element is the HTML body element or does not have an associated box | |
| // return 0 and stop this algorithm. | |
| if (isBody()) | |
| return 0; | |
| RenderBoxModelObject* offsetPar = offsetParent(); | |
| int xPos = (isBox() ? toRenderBox(this)->x() : 0); | |
| // If the offsetParent of the element is null, or is the HTML body element, | |
| // return the distance between the canvas origin and the left border edge | |
| // of the element and stop this algorithm. | |
| if (offsetPar) { | |
| if (offsetPar->isBox() && !offsetPar->isBody()) | |
| xPos -= toRenderBox(offsetPar)->borderLeft(); | |
| if (!isPositioned()) { | |
| if (isRelPositioned()) | |
| xPos += relativePositionOffsetX(); | |
| RenderObject* curr = parent(); | |
| while (curr && curr != offsetPar) { | |
| // FIXME: What are we supposed to do inside SVG content? | |
| if (curr->isBox() && !curr->isTableRow()) | |
| xPos += toRenderBox(curr)->x(); | |
| curr = curr->parent(); | |
| } | |
| if (offsetPar->isBox() && offsetPar->isBody() && !offsetPar->isRelPositioned() && !offsetPar->isPositioned()) | |
| xPos += toRenderBox(offsetPar)->x(); | |
| } | |
| } | |
| return xPos; | |
| } | |
| int RenderBoxModelObject::offsetTop() const | |
| { | |
| // If the element is the HTML body element or does not have an associated box | |
| // return 0 and stop this algorithm. | |
| if (isBody()) | |
| return 0; | |
| RenderBoxModelObject* offsetPar = offsetParent(); | |
| int yPos = (isBox() ? toRenderBox(this)->y() : 0); | |
| // If the offsetParent of the element is null, or is the HTML body element, | |
| // return the distance between the canvas origin and the top border edge | |
| // of the element and stop this algorithm. | |
| if (offsetPar) { | |
| if (offsetPar->isBox() && !offsetPar->isBody()) | |
| yPos -= toRenderBox(offsetPar)->borderTop(); | |
| if (!isPositioned()) { | |
| if (isRelPositioned()) | |
| yPos += relativePositionOffsetY(); | |
| RenderObject* curr = parent(); | |
| while (curr && curr != offsetPar) { | |
| // FIXME: What are we supposed to do inside SVG content? | |
| if (curr->isBox() && !curr->isTableRow()) | |
| yPos += toRenderBox(curr)->y(); | |
| curr = curr->parent(); | |
| } | |
| if (offsetPar->isBox() && offsetPar->isBody() && !offsetPar->isRelPositioned() && !offsetPar->isPositioned()) | |
| yPos += toRenderBox(offsetPar)->y(); | |
| } | |
| } | |
| return yPos; | |
| } | |
| int RenderBoxModelObject::paddingTop(bool) const | |
| { | |
| int w = 0; | |
| Length padding = style()->paddingTop(); | |
| if (padding.isPercent()) | |
| w = containingBlock()->availableWidth(); | |
| return padding.calcMinValue(w); | |
| } | |
| int RenderBoxModelObject::paddingBottom(bool) const | |
| { | |
| int w = 0; | |
| Length padding = style()->paddingBottom(); | |
| if (padding.isPercent()) | |
| w = containingBlock()->availableWidth(); | |
| return padding.calcMinValue(w); | |
| } | |
| int RenderBoxModelObject::paddingLeft(bool) const | |
| { | |
| int w = 0; | |
| Length padding = style()->paddingLeft(); | |
| if (padding.isPercent()) | |
| w = containingBlock()->availableWidth(); | |
| return padding.calcMinValue(w); | |
| } | |
| int RenderBoxModelObject::paddingRight(bool) const | |
| { | |
| int w = 0; | |
| Length padding = style()->paddingRight(); | |
| if (padding.isPercent()) | |
| w = containingBlock()->availableWidth(); | |
| return padding.calcMinValue(w); | |
| } | |
| void RenderBoxModelObject::paintFillLayerExtended(const PaintInfo& paintInfo, const Color& c, const FillLayer* bgLayer, int tx, int ty, int w, int h, InlineFlowBox* box, CompositeOperator op, RenderObject* backgroundObject) | |
| { | |
| GraphicsContext* context = paintInfo.context; | |
| if (context->paintingDisabled()) | |
| return; | |
| bool includeLeftEdge = box ? box->includeLeftEdge() : true; | |
| bool includeRightEdge = box ? box->includeRightEdge() : true; | |
| int bLeft = includeLeftEdge ? borderLeft() : 0; | |
| int bRight = includeRightEdge ? borderRight() : 0; | |
| int pLeft = includeLeftEdge ? paddingLeft() : 0; | |
| int pRight = includeRightEdge ? paddingRight() : 0; | |
| bool clippedToBorderRadius = false; | |
| if (style()->hasBorderRadius() && (includeLeftEdge || includeRightEdge)) { | |
| IntRect borderRect(tx, ty, w, h); | |
| if (borderRect.isEmpty()) | |
| return; | |
| context->save(); | |
| IntSize topLeft, topRight, bottomLeft, bottomRight; | |
| style()->getBorderRadiiForRect(borderRect, topLeft, topRight, bottomLeft, bottomRight); | |
| context->addRoundedRectClip(borderRect, includeLeftEdge ? topLeft : IntSize(), | |
| includeRightEdge ? topRight : IntSize(), | |
| includeLeftEdge ? bottomLeft : IntSize(), | |
| includeRightEdge ? bottomRight : IntSize()); | |
| clippedToBorderRadius = true; | |
| } | |
| bool clippedWithLocalScrolling = hasOverflowClip() && bgLayer->attachment() == LocalBackgroundAttachment; | |
| if (clippedWithLocalScrolling) { | |
| // Clip to the overflow area. | |
| context->save(); | |
| context->clip(toRenderBox(this)->overflowClipRect(tx, ty)); | |
| // Now adjust our tx, ty, w, h to reflect a scrolled content box with borders at the ends. | |
| IntSize offset = layer()->scrolledContentOffset(); | |
| tx -= offset.width(); | |
| ty -= offset.height(); | |
| w = bLeft + layer()->scrollWidth() + bRight; | |
| h = borderTop() + layer()->scrollHeight() + borderBottom(); | |
| } | |
| if (bgLayer->clip() == PaddingFillBox || bgLayer->clip() == ContentFillBox) { | |
| // Clip to the padding or content boxes as necessary. | |
| bool includePadding = bgLayer->clip() == ContentFillBox; | |
| int x = tx + bLeft + (includePadding ? pLeft : 0); | |
| int y = ty + borderTop() + (includePadding ? paddingTop() : 0); | |
| int width = w - bLeft - bRight - (includePadding ? pLeft + pRight : 0); | |
| int height = h - borderTop() - borderBottom() - (includePadding ? paddingTop() + paddingBottom() : 0); | |
| context->save(); | |
| context->clip(IntRect(x, y, width, height)); | |
| } else if (bgLayer->clip() == TextFillBox) { | |
| // We have to draw our text into a mask that can then be used to clip background drawing. | |
| // First figure out how big the mask has to be. It should be no bigger than what we need | |
| // to actually render, so we should intersect the dirty rect with the border box of the background. | |
| IntRect maskRect(tx, ty, w, h); | |
| maskRect.intersect(paintInfo.rect); | |
| // Now create the mask. | |
| OwnPtr<ImageBuffer> maskImage = ImageBuffer::create(maskRect.size()); | |
| if (!maskImage) | |
| return; | |
| GraphicsContext* maskImageContext = maskImage->context(); | |
| maskImageContext->translate(-maskRect.x(), -maskRect.y()); | |
| // Now add the text to the clip. We do this by painting using a special paint phase that signals to | |
| // InlineTextBoxes that they should just add their contents to the clip. | |
| PaintInfo info(maskImageContext, maskRect, PaintPhaseTextClip, true, 0, 0); | |
| if (box) | |
| box->paint(info, tx - box->x(), ty - box->y()); | |
| else { | |
| int x = isBox() ? toRenderBox(this)->x() : 0; | |
| int y = isBox() ? toRenderBox(this)->y() : 0; | |
| paint(info, tx - x, ty - y); | |
| } | |
| // The mask has been created. Now we just need to clip to it. | |
| context->save(); | |
| context->clipToImageBuffer(maskRect, maskImage.get()); | |
| } | |
| StyleImage* bg = bgLayer->image(); | |
| bool shouldPaintBackgroundImage = bg && bg->canRender(style()->effectiveZoom()); | |
| Color bgColor = c; | |
| // When this style flag is set, change existing background colors and images to a solid white background. | |
| // If there's no bg color or image, leave it untouched to avoid affecting transparency. | |
| // We don't try to avoid loading the background images, because this style flag is only set | |
| // when printing, and at that point we've already loaded the background images anyway. (To avoid | |
| // loading the background images we'd have to do this check when applying styles rather than | |
| // while rendering.) | |
| if (style()->forceBackgroundsToWhite()) { | |
| // Note that we can't reuse this variable below because the bgColor might be changed | |
| bool shouldPaintBackgroundColor = !bgLayer->next() && bgColor.isValid() && bgColor.alpha() > 0; | |
| if (shouldPaintBackgroundImage || shouldPaintBackgroundColor) { | |
| bgColor = Color::white; | |
| shouldPaintBackgroundImage = false; | |
| } | |
| } | |
| bool isRoot = this->isRoot(); | |
| // Only fill with a base color (e.g., white) if we're the root document, since iframes/frames with | |
| // no background in the child document should show the parent's background. | |
| bool isOpaqueRoot = false; | |
| if (isRoot) { | |
| isOpaqueRoot = true; | |
| if (!bgLayer->next() && !(bgColor.isValid() && bgColor.alpha() == 255) && view()->frameView()) { | |
| Element* ownerElement = document()->ownerElement(); | |
| if (ownerElement) { | |
| if (!ownerElement->hasTagName(frameTag)) { | |
| // Locate the <body> element using the DOM. This is easier than trying | |
| // to crawl around a render tree with potential :before/:after content and | |
| // anonymous blocks created by inline <body> tags etc. We can locate the <body> | |
| // render object very easily via the DOM. | |
| HTMLElement* body = document()->body(); | |
| if (body) { | |
| // Can't scroll a frameset document anyway. | |
| isOpaqueRoot = body->hasLocalName(framesetTag); | |
| } | |
| } | |
| } else | |
| isOpaqueRoot = !view()->frameView()->isTransparent(); | |
| } | |
| view()->frameView()->setContentIsOpaque(isOpaqueRoot); | |
| } | |
| // Paint the color first underneath all images. | |
| if (!bgLayer->next()) { | |
| IntRect rect(tx, ty, w, h); | |
| rect.intersect(paintInfo.rect); | |
| // If we have an alpha and we are painting the root element, go ahead and blend with the base background color. | |
| if (isOpaqueRoot) { | |
| Color baseColor = view()->frameView()->baseBackgroundColor(); | |
| if (baseColor.alpha() > 0) { | |
| context->save(); | |
| context->setCompositeOperation(CompositeCopy); | |
| context->fillRect(rect, baseColor, style()->colorSpace()); | |
| context->restore(); | |
| } else | |
| context->clearRect(rect); | |
| } | |
| if (bgColor.isValid() && bgColor.alpha() > 0) | |
| context->fillRect(rect, bgColor, style()->colorSpace()); | |
| } | |
| // no progressive loading of the background image | |
| if (shouldPaintBackgroundImage) { | |
| IntRect destRect; | |
| IntPoint phase; | |
| IntSize tileSize; | |
| calculateBackgroundImageGeometry(bgLayer, tx, ty, w, h, destRect, phase, tileSize); | |
| IntPoint destOrigin = destRect.location(); | |
| destRect.intersect(paintInfo.rect); | |
| if (!destRect.isEmpty()) { | |
| phase += destRect.location() - destOrigin; | |
| CompositeOperator compositeOp = op == CompositeSourceOver ? bgLayer->composite() : op; | |
| RenderObject* clientForBackgroundImage = backgroundObject ? backgroundObject : this; | |
| Image* image = bg->image(clientForBackgroundImage, tileSize); | |
| bool useLowQualityScaling = RenderBoxModelScaleObserver::shouldPaintBackgroundAtLowQuality(context, this, image, tileSize); | |
| context->drawTiledImage(image, style()->colorSpace(), destRect, phase, tileSize, compositeOp, useLowQualityScaling); | |
| } | |
| } | |
| if (bgLayer->clip() != BorderFillBox) | |
| // Undo the background clip | |
| context->restore(); | |
| if (clippedToBorderRadius) | |
| // Undo the border radius clip | |
| context->restore(); | |
| if (clippedWithLocalScrolling) // Undo the clip for local background attachments. | |
| context->restore(); | |
| } | |
| IntSize RenderBoxModelObject::calculateFillTileSize(const FillLayer* fillLayer, IntSize positioningAreaSize) const | |
| { | |
| StyleImage* image = fillLayer->image(); | |
| image->setImageContainerSize(positioningAreaSize); // Use the box established by background-origin. | |
| EFillSizeType type = fillLayer->size().type; | |
| switch (type) { | |
| case SizeLength: { | |
| int w = positioningAreaSize.width(); | |
| int h = positioningAreaSize.height(); | |
| Length layerWidth = fillLayer->size().size.width(); | |
| Length layerHeight = fillLayer->size().size.height(); | |
| if (layerWidth.isFixed()) | |
| w = layerWidth.value(); | |
| else if (layerWidth.isPercent()) | |
| w = layerWidth.calcValue(positioningAreaSize.width()); | |
| if (layerHeight.isFixed()) | |
| h = layerHeight.value(); | |
| else if (layerHeight.isPercent()) | |
| h = layerHeight.calcValue(positioningAreaSize.height()); | |
| // If one of the values is auto we have to use the appropriate | |
| // scale to maintain our aspect ratio. | |
| if (layerWidth.isAuto() && !layerHeight.isAuto()) | |
| w = image->imageSize(this, style()->effectiveZoom()).width() * h / image->imageSize(this, style()->effectiveZoom()).height(); | |
| else if (!layerWidth.isAuto() && layerHeight.isAuto()) | |
| h = image->imageSize(this, style()->effectiveZoom()).height() * w / image->imageSize(this, style()->effectiveZoom()).width(); | |
| else if (layerWidth.isAuto() && layerHeight.isAuto()) { | |
| // If both width and height are auto, we just want to use the image's | |
| // intrinsic size. | |
| w = image->imageSize(this, style()->effectiveZoom()).width(); | |
| h = image->imageSize(this, style()->effectiveZoom()).height(); | |
| } | |
| return IntSize(max(1, w), max(1, h)); | |
| } | |
| case Contain: | |
| case Cover: { | |
| IntSize imageIntrinsicSize = image->imageSize(this, 1); | |
| float horizontalScaleFactor = static_cast<float>(positioningAreaSize.width()) / imageIntrinsicSize.width(); | |
| float verticalScaleFactor = static_cast<float>(positioningAreaSize.height()) / imageIntrinsicSize.height(); | |
| float scaleFactor = type == Contain ? min(horizontalScaleFactor, verticalScaleFactor) : max(horizontalScaleFactor, verticalScaleFactor); | |
| return IntSize(max<int>(1, imageIntrinsicSize.width() * scaleFactor), max<int>(1, imageIntrinsicSize.height() * scaleFactor)); | |
| } | |
| case SizeNone: | |
| break; | |
| } | |
| return image->imageSize(this, style()->effectiveZoom()); | |
| } | |
| void RenderBoxModelObject::calculateBackgroundImageGeometry(const FillLayer* fillLayer, int tx, int ty, int w, int h, | |
| IntRect& destRect, IntPoint& phase, IntSize& tileSize) | |
| { | |
| int left = 0; | |
| int top = 0; | |
| IntSize positioningAreaSize; | |
| // Determine the background positioning area and set destRect to the background painting area. | |
| // destRect will be adjusted later if the background is non-repeating. | |
| bool fixedAttachment = fillLayer->attachment() == FixedBackgroundAttachment; | |
| #if ENABLE(FAST_MOBILE_SCROLLING) | |
| if (view()->frameView() && view()->frameView()->canBlitOnScroll()) { | |
| // As a side effect of an optimization to blit on scroll, we do not honor the CSS | |
| // property "background-attachment: fixed" because it may result in rendering | |
| // artifacts. Note, these artifacts only appear if we are blitting on scroll of | |
| // a page that has fixed background images. | |
| fixedAttachment = false; | |
| } | |
| #endif | |
| if (!fixedAttachment) { | |
| destRect = IntRect(tx, ty, w, h); | |
| int right = 0; | |
| int bottom = 0; | |
| // Scroll and Local. | |
| if (fillLayer->origin() != BorderFillBox) { | |
| left = borderLeft(); | |
| right = borderRight(); | |
| top = borderTop(); | |
| bottom = borderBottom(); | |
| if (fillLayer->origin() == ContentFillBox) { | |
| left += paddingLeft(); | |
| right += paddingRight(); | |
| top += paddingTop(); | |
| bottom += paddingBottom(); | |
| } | |
| } | |
| // The background of the box generated by the root element covers the entire canvas including | |
| // its margins. Since those were added in already, we have to factor them out when computing | |
| // the background positioning area. | |
| if (isRoot()) { | |
| positioningAreaSize = IntSize(toRenderBox(this)->width() - left - right, toRenderBox(this)->height() - top - bottom); | |
| left += marginLeft(); | |
| top += marginTop(); | |
| } else | |
| positioningAreaSize = IntSize(w - left - right, h - top - bottom); | |
| } else { | |
| destRect = viewRect(); | |
| positioningAreaSize = destRect.size(); | |
| } | |
| tileSize = calculateFillTileSize(fillLayer, positioningAreaSize); | |
| EFillRepeat backgroundRepeatX = fillLayer->repeatX(); | |
| EFillRepeat backgroundRepeatY = fillLayer->repeatY(); | |
| int xPosition = fillLayer->xPosition().calcMinValue(positioningAreaSize.width() - tileSize.width(), true); | |
| if (backgroundRepeatX == RepeatFill) | |
| phase.setX(tileSize.width() ? tileSize.width() - (xPosition + left) % tileSize.width() : 0); | |
| else { | |
| destRect.move(max(xPosition + left, 0), 0); | |
| phase.setX(-min(xPosition + left, 0)); | |
| destRect.setWidth(tileSize.width() + min(xPosition + left, 0)); | |
| } | |
| int yPosition = fillLayer->yPosition().calcMinValue(positioningAreaSize.height() - tileSize.height(), true); | |
| if (backgroundRepeatY == RepeatFill) | |
| phase.setY(tileSize.height() ? tileSize.height() - (yPosition + top) % tileSize.height() : 0); | |
| else { | |
| destRect.move(0, max(yPosition + top, 0)); | |
| phase.setY(-min(yPosition + top, 0)); | |
| destRect.setHeight(tileSize.height() + min(yPosition + top, 0)); | |
| } | |
| if (fixedAttachment) | |
| phase.move(max(tx - destRect.x(), 0), max(ty - destRect.y(), 0)); | |
| destRect.intersect(IntRect(tx, ty, w, h)); | |
| } | |
| int RenderBoxModelObject::verticalPosition(bool firstLine) const | |
| { | |
| // This method determines the vertical position for inline elements. | |
| ASSERT(isInline()); | |
| if (!isInline()) | |
| return 0; | |
| int vpos = 0; | |
| EVerticalAlign va = style()->verticalAlign(); | |
| if (va == TOP) | |
| vpos = PositionTop; | |
| else if (va == BOTTOM) | |
| vpos = PositionBottom; | |
| else { | |
| bool checkParent = parent()->isRenderInline() && parent()->style()->verticalAlign() != TOP && parent()->style()->verticalAlign() != BOTTOM; | |
| vpos = checkParent ? toRenderInline(parent())->verticalPositionFromCache(firstLine) : 0; | |
| // don't allow elements nested inside text-top to have a different valignment. | |
| if (va == BASELINE) | |
| return vpos; | |
| const Font& f = parent()->style(firstLine)->font(); | |
| int fontsize = f.pixelSize(); | |
| if (va == SUB) | |
| vpos += fontsize / 5 + 1; | |
| else if (va == SUPER) | |
| vpos -= fontsize / 3 + 1; | |
| else if (va == TEXT_TOP) | |
| vpos += baselinePosition(firstLine) - f.ascent(); | |
| else if (va == MIDDLE) | |
| vpos += -static_cast<int>(f.xHeight() / 2) - lineHeight(firstLine) / 2 + baselinePosition(firstLine); | |
| else if (va == TEXT_BOTTOM) { | |
| vpos += f.descent(); | |
| // lineHeight - baselinePosition is always 0 for replaced elements (except inline blocks), so don't bother wasting time in that case. | |
| if (!isReplaced() || style()->display() == INLINE_BLOCK) | |
| vpos -= (lineHeight(firstLine) - baselinePosition(firstLine)); | |
| } else if (va == BASELINE_MIDDLE) | |
| vpos += -lineHeight(firstLine) / 2 + baselinePosition(firstLine); | |
| else if (va == LENGTH) | |
| vpos -= style()->verticalAlignLength().calcValue(lineHeight(firstLine)); | |
| } | |
| return vpos; | |
| } | |
| bool RenderBoxModelObject::paintNinePieceImage(GraphicsContext* graphicsContext, int tx, int ty, int w, int h, const RenderStyle* style, | |
| const NinePieceImage& ninePieceImage, CompositeOperator op) | |
| { | |
| StyleImage* styleImage = ninePieceImage.image(); | |
| if (!styleImage) | |
| return false; | |
| if (!styleImage->isLoaded()) | |
| return true; // Never paint a nine-piece image incrementally, but don't paint the fallback borders either. | |
| if (!styleImage->canRender(style->effectiveZoom())) | |
| return false; | |
| // FIXME: border-image is broken with full page zooming when tiling has to happen, since the tiling function | |
| // doesn't have any understanding of the zoom that is in effect on the tile. | |
| styleImage->setImageContainerSize(IntSize(w, h)); | |
| IntSize imageSize = styleImage->imageSize(this, 1.0f); | |
| int imageWidth = imageSize.width(); | |
| int imageHeight = imageSize.height(); | |
| int topSlice = min(imageHeight, ninePieceImage.m_slices.top().calcValue(imageHeight)); | |
| int bottomSlice = min(imageHeight, ninePieceImage.m_slices.bottom().calcValue(imageHeight)); | |
| int leftSlice = min(imageWidth, ninePieceImage.m_slices.left().calcValue(imageWidth)); | |
| int rightSlice = min(imageWidth, ninePieceImage.m_slices.right().calcValue(imageWidth)); | |
| ENinePieceImageRule hRule = ninePieceImage.horizontalRule(); | |
| ENinePieceImageRule vRule = ninePieceImage.verticalRule(); | |
| bool fitToBorder = style->borderImage() == ninePieceImage; | |
| int leftWidth = fitToBorder ? style->borderLeftWidth() : leftSlice; | |
| int topWidth = fitToBorder ? style->borderTopWidth() : topSlice; | |
| int rightWidth = fitToBorder ? style->borderRightWidth() : rightSlice; | |
| int bottomWidth = fitToBorder ? style->borderBottomWidth() : bottomSlice; | |
| bool drawLeft = leftSlice > 0 && leftWidth > 0; | |
| bool drawTop = topSlice > 0 && topWidth > 0; | |
| bool drawRight = rightSlice > 0 && rightWidth > 0; | |
| bool drawBottom = bottomSlice > 0 && bottomWidth > 0; | |
| bool drawMiddle = (imageWidth - leftSlice - rightSlice) > 0 && (w - leftWidth - rightWidth) > 0 && | |
| (imageHeight - topSlice - bottomSlice) > 0 && (h - topWidth - bottomWidth) > 0; | |
| Image* image = styleImage->image(this, imageSize); | |
| ColorSpace colorSpace = style->colorSpace(); | |
| if (drawLeft) { | |
| // Paint the top and bottom left corners. | |
| // The top left corner rect is (tx, ty, leftWidth, topWidth) | |
| // The rect to use from within the image is obtained from our slice, and is (0, 0, leftSlice, topSlice) | |
| if (drawTop) | |
| graphicsContext->drawImage(image, colorSpace, IntRect(tx, ty, leftWidth, topWidth), | |
| IntRect(0, 0, leftSlice, topSlice), op); | |
| // The bottom left corner rect is (tx, ty + h - bottomWidth, leftWidth, bottomWidth) | |
| // The rect to use from within the image is (0, imageHeight - bottomSlice, leftSlice, botomSlice) | |
| if (drawBottom) | |
| graphicsContext->drawImage(image, colorSpace, IntRect(tx, ty + h - bottomWidth, leftWidth, bottomWidth), | |
| IntRect(0, imageHeight - bottomSlice, leftSlice, bottomSlice), op); | |
| // Paint the left edge. | |
| // Have to scale and tile into the border rect. | |
| graphicsContext->drawTiledImage(image, colorSpace, IntRect(tx, ty + topWidth, leftWidth, | |
| h - topWidth - bottomWidth), | |
| IntRect(0, topSlice, leftSlice, imageHeight - topSlice - bottomSlice), | |
| Image::StretchTile, (Image::TileRule)vRule, op); | |
| } | |
| if (drawRight) { | |
| // Paint the top and bottom right corners | |
| // The top right corner rect is (tx + w - rightWidth, ty, rightWidth, topWidth) | |
| // The rect to use from within the image is obtained from our slice, and is (imageWidth - rightSlice, 0, rightSlice, topSlice) | |
| if (drawTop) | |
| graphicsContext->drawImage(image, colorSpace, IntRect(tx + w - rightWidth, ty, rightWidth, topWidth), | |
| IntRect(imageWidth - rightSlice, 0, rightSlice, topSlice), op); | |
| // The bottom right corner rect is (tx + w - rightWidth, ty + h - bottomWidth, rightWidth, bottomWidth) | |
| // The rect to use from within the image is (imageWidth - rightSlice, imageHeight - bottomSlice, rightSlice, bottomSlice) | |
| if (drawBottom) | |
| graphicsContext->drawImage(image, colorSpace, IntRect(tx + w - rightWidth, ty + h - bottomWidth, rightWidth, bottomWidth), | |
| IntRect(imageWidth - rightSlice, imageHeight - bottomSlice, rightSlice, bottomSlice), op); | |
| // Paint the right edge. | |
| graphicsContext->drawTiledImage(image, colorSpace, IntRect(tx + w - rightWidth, ty + topWidth, rightWidth, | |
| h - topWidth - bottomWidth), | |
| IntRect(imageWidth - rightSlice, topSlice, rightSlice, imageHeight - topSlice - bottomSlice), | |
| Image::StretchTile, (Image::TileRule)vRule, op); | |
| } | |
| // Paint the top edge. | |
| if (drawTop) | |
| graphicsContext->drawTiledImage(image, colorSpace, IntRect(tx + leftWidth, ty, w - leftWidth - rightWidth, topWidth), | |
| IntRect(leftSlice, 0, imageWidth - rightSlice - leftSlice, topSlice), | |
| (Image::TileRule)hRule, Image::StretchTile, op); | |
| // Paint the bottom edge. | |
| if (drawBottom) | |
| graphicsContext->drawTiledImage(image, colorSpace, IntRect(tx + leftWidth, ty + h - bottomWidth, | |
| w - leftWidth - rightWidth, bottomWidth), | |
| IntRect(leftSlice, imageHeight - bottomSlice, imageWidth - rightSlice - leftSlice, bottomSlice), | |
| (Image::TileRule)hRule, Image::StretchTile, op); | |
| // Paint the middle. | |
| if (drawMiddle) | |
| graphicsContext->drawTiledImage(image, colorSpace, IntRect(tx + leftWidth, ty + topWidth, w - leftWidth - rightWidth, | |
| h - topWidth - bottomWidth), | |
| IntRect(leftSlice, topSlice, imageWidth - rightSlice - leftSlice, imageHeight - topSlice - bottomSlice), | |
| (Image::TileRule)hRule, (Image::TileRule)vRule, op); | |
| return true; | |
| } | |
| void RenderBoxModelObject::paintBorder(GraphicsContext* graphicsContext, int tx, int ty, int w, int h, | |
| const RenderStyle* style, bool begin, bool end) | |
| { | |
| if (paintNinePieceImage(graphicsContext, tx, ty, w, h, style, style->borderImage())) | |
| return; | |
| const Color& topColor = style->borderTopColor(); | |
| const Color& bottomColor = style->borderBottomColor(); | |
| const Color& leftColor = style->borderLeftColor(); | |
| const Color& rightColor = style->borderRightColor(); | |
| bool topTransparent = style->borderTopIsTransparent(); | |
| bool bottomTransparent = style->borderBottomIsTransparent(); | |
| bool rightTransparent = style->borderRightIsTransparent(); | |
| bool leftTransparent = style->borderLeftIsTransparent(); | |
| EBorderStyle topStyle = style->borderTopStyle(); | |
| EBorderStyle bottomStyle = style->borderBottomStyle(); | |
| EBorderStyle leftStyle = style->borderLeftStyle(); | |
| EBorderStyle rightStyle = style->borderRightStyle(); | |
| bool renderTop = topStyle > BHIDDEN && !topTransparent; | |
| bool renderLeft = leftStyle > BHIDDEN && begin && !leftTransparent; | |
| bool renderRight = rightStyle > BHIDDEN && end && !rightTransparent; | |
| bool renderBottom = bottomStyle > BHIDDEN && !bottomTransparent; | |
| bool renderRadii = false; | |
| IntSize topLeft, topRight, bottomLeft, bottomRight; | |
| if (style->hasBorderRadius()) { | |
| IntRect borderRect = IntRect(tx, ty, w, h); | |
| IntSize topLeftRadius, topRightRadius, bottomLeftRadius, bottomRightRadius; | |
| style->getBorderRadiiForRect(borderRect, topLeftRadius, topRightRadius, bottomLeftRadius, bottomRightRadius); | |
| if (begin) { | |
| topLeft = topLeftRadius; | |
| bottomLeft = bottomLeftRadius; | |
| } | |
| if (end) { | |
| topRight = topRightRadius; | |
| bottomRight = bottomRightRadius; | |
| } | |
| renderRadii = true; | |
| // Clip to the rounded rectangle. | |
| graphicsContext->save(); | |
| graphicsContext->addRoundedRectClip(borderRect, topLeft, topRight, bottomLeft, bottomRight); | |
| } | |
| int firstAngleStart, secondAngleStart, firstAngleSpan, secondAngleSpan; | |
| float thickness; | |
| bool upperLeftBorderStylesMatch = renderLeft && (topStyle == leftStyle) && (topColor == leftColor); | |
| bool upperRightBorderStylesMatch = renderRight && (topStyle == rightStyle) && (topColor == rightColor) && (topStyle != OUTSET) && (topStyle != RIDGE) && (topStyle != INSET) && (topStyle != GROOVE); | |
| bool lowerLeftBorderStylesMatch = renderLeft && (bottomStyle == leftStyle) && (bottomColor == leftColor) && (bottomStyle != OUTSET) && (bottomStyle != RIDGE) && (bottomStyle != INSET) && (bottomStyle != GROOVE); | |
| bool lowerRightBorderStylesMatch = renderRight && (bottomStyle == rightStyle) && (bottomColor == rightColor); | |
| if (renderTop) { | |
| bool ignore_left = (renderRadii && topLeft.width() > 0) || | |
| (topColor == leftColor && topTransparent == leftTransparent && topStyle >= OUTSET && | |
| (leftStyle == DOTTED || leftStyle == DASHED || leftStyle == SOLID || leftStyle == OUTSET)); | |
| bool ignore_right = (renderRadii && topRight.width() > 0) || | |
| (topColor == rightColor && topTransparent == rightTransparent && topStyle >= OUTSET && | |
| (rightStyle == DOTTED || rightStyle == DASHED || rightStyle == SOLID || rightStyle == INSET)); | |
| int x = tx; | |
| int x2 = tx + w; | |
| if (renderRadii) { | |
| x += topLeft.width(); | |
| x2 -= topRight.width(); | |
| } | |
| drawLineForBoxSide(graphicsContext, x, ty, x2, ty + style->borderTopWidth(), BSTop, topColor, style->color(), topStyle, | |
| ignore_left ? 0 : style->borderLeftWidth(), ignore_right ? 0 : style->borderRightWidth()); | |
| if (renderRadii) { | |
| int leftY = ty; | |
| // We make the arc double thick and let the clip rect take care of clipping the extra off. | |
| // We're doing this because it doesn't seem possible to match the curve of the clip exactly | |
| // with the arc-drawing function. | |
| thickness = style->borderTopWidth() * 2; | |
| if (topLeft.width()) { | |
| int leftX = tx; | |
| // The inner clip clips inside the arc. This is especially important for 1px borders. | |
| bool applyLeftInnerClip = (style->borderLeftWidth() < topLeft.width()) | |
| && (style->borderTopWidth() < topLeft.height()) | |
| && (topStyle != DOUBLE || style->borderTopWidth() > 6); | |
| if (applyLeftInnerClip) { | |
| graphicsContext->save(); | |
| graphicsContext->addInnerRoundedRectClip(IntRect(leftX, leftY, topLeft.width() * 2, topLeft.height() * 2), | |
| style->borderTopWidth()); | |
| } | |
| firstAngleStart = 90; | |
| firstAngleSpan = upperLeftBorderStylesMatch ? 90 : 45; | |
| // Draw upper left arc | |
| drawArcForBoxSide(graphicsContext, leftX, leftY, thickness, topLeft, firstAngleStart, firstAngleSpan, | |
| BSTop, topColor, style->color(), topStyle, true); | |
| if (applyLeftInnerClip) | |
| graphicsContext->restore(); | |
| } | |
| if (topRight.width()) { | |
| int rightX = tx + w - topRight.width() * 2; | |
| bool applyRightInnerClip = (style->borderRightWidth() < topRight.width()) | |
| && (style->borderTopWidth() < topRight.height()) | |
| && (topStyle != DOUBLE || style->borderTopWidth() > 6); | |
| if (applyRightInnerClip) { | |
| graphicsContext->save(); | |
| graphicsContext->addInnerRoundedRectClip(IntRect(rightX, leftY, topRight.width() * 2, topRight.height() * 2), | |
| style->borderTopWidth()); | |
| } | |
| if (upperRightBorderStylesMatch) { | |
| secondAngleStart = 0; | |
| secondAngleSpan = 90; | |
| } else { | |
| secondAngleStart = 45; | |
| secondAngleSpan = 45; | |
| } | |
| // Draw upper right arc | |
| drawArcForBoxSide(graphicsContext, rightX, leftY, thickness, topRight, secondAngleStart, secondAngleSpan, | |
| BSTop, topColor, style->color(), topStyle, false); | |
| if (applyRightInnerClip) | |
| graphicsContext->restore(); | |
| } | |
| } | |
| } | |
| if (renderBottom) { | |
| bool ignore_left = (renderRadii && bottomLeft.width() > 0) || | |
| (bottomColor == leftColor && bottomTransparent == leftTransparent && bottomStyle >= OUTSET && | |
| (leftStyle == DOTTED || leftStyle == DASHED || leftStyle == SOLID || leftStyle == OUTSET)); | |
| bool ignore_right = (renderRadii && bottomRight.width() > 0) || | |
| (bottomColor == rightColor && bottomTransparent == rightTransparent && bottomStyle >= OUTSET && | |
| (rightStyle == DOTTED || rightStyle == DASHED || rightStyle == SOLID || rightStyle == INSET)); | |
| int x = tx; | |
| int x2 = tx + w; | |
| if (renderRadii) { | |
| x += bottomLeft.width(); | |
| x2 -= bottomRight.width(); | |
| } | |
| drawLineForBoxSide(graphicsContext, x, ty + h - style->borderBottomWidth(), x2, ty + h, BSBottom, bottomColor, style->color(), bottomStyle, | |
| ignore_left ? 0 : style->borderLeftWidth(), ignore_right ? 0 : style->borderRightWidth()); | |
| if (renderRadii) { | |
| thickness = style->borderBottomWidth() * 2; | |
| if (bottomLeft.width()) { | |
| int leftX = tx; | |
| int leftY = ty + h - bottomLeft.height() * 2; | |
| bool applyLeftInnerClip = (style->borderLeftWidth() < bottomLeft.width()) | |
| && (style->borderBottomWidth() < bottomLeft.height()) | |
| && (bottomStyle != DOUBLE || style->borderBottomWidth() > 6); | |
| if (applyLeftInnerClip) { | |
| graphicsContext->save(); | |
| graphicsContext->addInnerRoundedRectClip(IntRect(leftX, leftY, bottomLeft.width() * 2, bottomLeft.height() * 2), | |
| style->borderBottomWidth()); | |
| } | |
| if (lowerLeftBorderStylesMatch) { | |
| firstAngleStart = 180; | |
| firstAngleSpan = 90; | |
| } else { | |
| firstAngleStart = 225; | |
| firstAngleSpan = 45; | |
| } | |
| // Draw lower left arc | |
| drawArcForBoxSide(graphicsContext, leftX, leftY, thickness, bottomLeft, firstAngleStart, firstAngleSpan, | |
| BSBottom, bottomColor, style->color(), bottomStyle, true); | |
| if (applyLeftInnerClip) | |
| graphicsContext->restore(); | |
| } | |
| if (bottomRight.width()) { | |
| int rightY = ty + h - bottomRight.height() * 2; | |
| int rightX = tx + w - bottomRight.width() * 2; | |
| bool applyRightInnerClip = (style->borderRightWidth() < bottomRight.width()) | |
| && (style->borderBottomWidth() < bottomRight.height()) | |
| && (bottomStyle != DOUBLE || style->borderBottomWidth() > 6); | |
| if (applyRightInnerClip) { | |
| graphicsContext->save(); | |
| graphicsContext->addInnerRoundedRectClip(IntRect(rightX, rightY, bottomRight.width() * 2, bottomRight.height() * 2), | |
| style->borderBottomWidth()); | |
| } | |
| secondAngleStart = 270; | |
| secondAngleSpan = lowerRightBorderStylesMatch ? 90 : 45; | |
| // Draw lower right arc | |
| drawArcForBoxSide(graphicsContext, rightX, rightY, thickness, bottomRight, secondAngleStart, secondAngleSpan, | |
| BSBottom, bottomColor, style->color(), bottomStyle, false); | |
| if (applyRightInnerClip) | |
| graphicsContext->restore(); | |
| } | |
| } | |
| } | |
| if (renderLeft) { | |
| bool ignore_top = (renderRadii && topLeft.height() > 0) || | |
| (topColor == leftColor && topTransparent == leftTransparent && leftStyle >= OUTSET && | |
| (topStyle == DOTTED || topStyle == DASHED || topStyle == SOLID || topStyle == OUTSET)); | |
| bool ignore_bottom = (renderRadii && bottomLeft.height() > 0) || | |
| (bottomColor == leftColor && bottomTransparent == leftTransparent && leftStyle >= OUTSET && | |
| (bottomStyle == DOTTED || bottomStyle == DASHED || bottomStyle == SOLID || bottomStyle == INSET)); | |
| int y = ty; | |
| int y2 = ty + h; | |
| if (renderRadii) { | |
| y += topLeft.height(); | |
| y2 -= bottomLeft.height(); | |
| } | |
| drawLineForBoxSide(graphicsContext, tx, y, tx + style->borderLeftWidth(), y2, BSLeft, leftColor, style->color(), leftStyle, | |
| ignore_top ? 0 : style->borderTopWidth(), ignore_bottom ? 0 : style->borderBottomWidth()); | |
| if (renderRadii && (!upperLeftBorderStylesMatch || !lowerLeftBorderStylesMatch)) { | |
| int topX = tx; | |
| thickness = style->borderLeftWidth() * 2; | |
| if (!upperLeftBorderStylesMatch && topLeft.width()) { | |
| int topY = ty; | |
| bool applyTopInnerClip = (style->borderLeftWidth() < topLeft.width()) | |
| && (style->borderTopWidth() < topLeft.height()) | |
| && (leftStyle != DOUBLE || style->borderLeftWidth() > 6); | |
| if (applyTopInnerClip) { | |
| graphicsContext->save(); | |
| graphicsContext->addInnerRoundedRectClip(IntRect(topX, topY, topLeft.width() * 2, topLeft.height() * 2), | |
| style->borderLeftWidth()); | |
| } | |
| firstAngleStart = 135; | |
| firstAngleSpan = 45; | |
| // Draw top left arc | |
| drawArcForBoxSide(graphicsContext, topX, topY, thickness, topLeft, firstAngleStart, firstAngleSpan, | |
| BSLeft, leftColor, style->color(), leftStyle, true); | |
| if (applyTopInnerClip) | |
| graphicsContext->restore(); | |
| } | |
| if (!lowerLeftBorderStylesMatch && bottomLeft.width()) { | |
| int bottomY = ty + h - bottomLeft.height() * 2; | |
| bool applyBottomInnerClip = (style->borderLeftWidth() < bottomLeft.width()) | |
| && (style->borderBottomWidth() < bottomLeft.height()) | |
| && (leftStyle != DOUBLE || style->borderLeftWidth() > 6); | |
| if (applyBottomInnerClip) { | |
| graphicsContext->save(); | |
| graphicsContext->addInnerRoundedRectClip(IntRect(topX, bottomY, bottomLeft.width() * 2, bottomLeft.height() * 2), | |
| style->borderLeftWidth()); | |
| } | |
| secondAngleStart = 180; | |
| secondAngleSpan = 45; | |
| // Draw bottom left arc | |
| drawArcForBoxSide(graphicsContext, topX, bottomY, thickness, bottomLeft, secondAngleStart, secondAngleSpan, | |
| BSLeft, leftColor, style->color(), leftStyle, false); | |
| if (applyBottomInnerClip) | |
| graphicsContext->restore(); | |
| } | |
| } | |
| } | |
| if (renderRight) { | |
| bool ignore_top = (renderRadii && topRight.height() > 0) || | |
| ((topColor == rightColor) && (topTransparent == rightTransparent) && | |
| (rightStyle >= DOTTED || rightStyle == INSET) && | |
| (topStyle == DOTTED || topStyle == DASHED || topStyle == SOLID || topStyle == OUTSET)); | |
| bool ignore_bottom = (renderRadii && bottomRight.height() > 0) || | |
| ((bottomColor == rightColor) && (bottomTransparent == rightTransparent) && | |
| (rightStyle >= DOTTED || rightStyle == INSET) && | |
| (bottomStyle == DOTTED || bottomStyle == DASHED || bottomStyle == SOLID || bottomStyle == INSET)); | |
| int y = ty; | |
| int y2 = ty + h; | |
| if (renderRadii) { | |
| y += topRight.height(); | |
| y2 -= bottomRight.height(); | |
| } | |
| drawLineForBoxSide(graphicsContext, tx + w - style->borderRightWidth(), y, tx + w, y2, BSRight, rightColor, style->color(), rightStyle, | |
| ignore_top ? 0 : style->borderTopWidth(), ignore_bottom ? 0 : style->borderBottomWidth()); | |
| if (renderRadii && (!upperRightBorderStylesMatch || !lowerRightBorderStylesMatch)) { | |
| thickness = style->borderRightWidth() * 2; | |
| if (!upperRightBorderStylesMatch && topRight.width()) { | |
| int topX = tx + w - topRight.width() * 2; | |
| int topY = ty; | |
| bool applyTopInnerClip = (style->borderRightWidth() < topRight.width()) | |
| && (style->borderTopWidth() < topRight.height()) | |
| && (rightStyle != DOUBLE || style->borderRightWidth() > 6); | |
| if (applyTopInnerClip) { | |
| graphicsContext->save(); | |
| graphicsContext->addInnerRoundedRectClip(IntRect(topX, topY, topRight.width() * 2, topRight.height() * 2), | |
| style->borderRightWidth()); | |
| } | |
| firstAngleStart = 0; | |
| firstAngleSpan = 45; | |
| // Draw top right arc | |
| drawArcForBoxSide(graphicsContext, topX, topY, thickness, topRight, firstAngleStart, firstAngleSpan, | |
| BSRight, rightColor, style->color(), rightStyle, true); | |
| if (applyTopInnerClip) | |
| graphicsContext->restore(); | |
| } | |
| if (!lowerRightBorderStylesMatch && bottomRight.width()) { | |
| int bottomX = tx + w - bottomRight.width() * 2; | |
| int bottomY = ty + h - bottomRight.height() * 2; | |
| bool applyBottomInnerClip = (style->borderRightWidth() < bottomRight.width()) | |
| && (style->borderBottomWidth() < bottomRight.height()) | |
| && (rightStyle != DOUBLE || style->borderRightWidth() > 6); | |
| if (applyBottomInnerClip) { | |
| graphicsContext->save(); | |
| graphicsContext->addInnerRoundedRectClip(IntRect(bottomX, bottomY, bottomRight.width() * 2, bottomRight.height() * 2), | |
| style->borderRightWidth()); | |
| } | |
| secondAngleStart = 315; | |
| secondAngleSpan = 45; | |
| // Draw bottom right arc | |
| drawArcForBoxSide(graphicsContext, bottomX, bottomY, thickness, bottomRight, secondAngleStart, secondAngleSpan, | |
| BSRight, rightColor, style->color(), rightStyle, false); | |
| if (applyBottomInnerClip) | |
| graphicsContext->restore(); | |
| } | |
| } | |
| } | |
| if (renderRadii) | |
| graphicsContext->restore(); | |
| } | |
| void RenderBoxModelObject::paintBoxShadow(GraphicsContext* context, int tx, int ty, int w, int h, const RenderStyle* s, ShadowStyle shadowStyle, bool begin, bool end) | |
| { | |
| // FIXME: Deal with border-image. Would be great to use border-image as a mask. | |
| if (context->paintingDisabled()) | |
| return; | |
| IntRect rect(tx, ty, w, h); | |
| IntSize topLeft; | |
| IntSize topRight; | |
| IntSize bottomLeft; | |
| IntSize bottomRight; | |
| bool hasBorderRadius = s->hasBorderRadius(); | |
| if (hasBorderRadius && (begin || end)) { | |
| IntSize topLeftRadius, topRightRadius, bottomLeftRadius, bottomRightRadius; | |
| s->getBorderRadiiForRect(rect, topLeftRadius, topRightRadius, bottomLeftRadius, bottomRightRadius); | |
| if (begin) { | |
| if (shadowStyle == Inset) { | |
| topLeftRadius.expand(-borderLeft(), -borderTop()); | |
| topLeftRadius.clampNegativeToZero(); | |
| bottomLeftRadius.expand(-borderLeft(), -borderBottom()); | |
| bottomLeftRadius.clampNegativeToZero(); | |
| } | |
| topLeft = topLeftRadius; | |
| bottomLeft = bottomLeftRadius; | |
| } | |
| if (end) { | |
| if (shadowStyle == Inset) { | |
| topRightRadius.expand(-borderRight(), -borderTop()); | |
| topRightRadius.clampNegativeToZero(); | |
| bottomRightRadius.expand(-borderRight(), -borderBottom()); | |
| bottomRightRadius.clampNegativeToZero(); | |
| } | |
| topRight = topRightRadius; | |
| bottomRight = bottomRightRadius; | |
| } | |
| } | |
| if (shadowStyle == Inset) { | |
| rect.move(begin ? borderLeft() : 0, borderTop()); | |
| rect.setWidth(rect.width() - (begin ? borderLeft() : 0) - (end ? borderRight() : 0)); | |
| rect.setHeight(rect.height() - borderTop() - borderBottom()); | |
| } | |
| bool hasOpaqueBackground = s->backgroundColor().isValid() && s->backgroundColor().alpha() == 255; | |
| for (ShadowData* shadow = s->boxShadow(); shadow; shadow = shadow->next) { | |
| if (shadow->style != shadowStyle) | |
| continue; | |
| IntSize shadowOffset(shadow->x, shadow->y); | |
| int shadowBlur = shadow->blur; | |
| int shadowSpread = shadow->spread; | |
| Color& shadowColor = shadow->color; | |
| if (shadow->style == Normal) { | |
| IntRect fillRect(rect); | |
| fillRect.inflate(shadowSpread); | |
| if (fillRect.isEmpty()) | |
| continue; | |
| IntRect shadowRect(rect); | |
| shadowRect.inflate(shadowBlur + shadowSpread); | |
| shadowRect.move(shadowOffset); | |
| context->save(); | |
| context->clip(shadowRect); | |
| // Move the fill just outside the clip, adding 1 pixel separation so that the fill does not | |
| // bleed in (due to antialiasing) if the context is transformed. | |
| IntSize extraOffset(w + max(0, shadowOffset.width()) + shadowBlur + 2 * shadowSpread + 1, 0); | |
| shadowOffset -= extraOffset; | |
| fillRect.move(extraOffset); | |
| context->setShadow(shadowOffset, shadowBlur, shadowColor, s->colorSpace()); | |
| if (hasBorderRadius) { | |
| IntRect rectToClipOut = rect; | |
| IntSize topLeftToClipOut = topLeft; | |
| IntSize topRightToClipOut = topRight; | |
| IntSize bottomLeftToClipOut = bottomLeft; | |
| IntSize bottomRightToClipOut = bottomRight; | |
| if (shadowSpread < 0) { | |
| topLeft.expand(shadowSpread, shadowSpread); | |
| topLeft.clampNegativeToZero(); | |
| topRight.expand(shadowSpread, shadowSpread); | |
| topRight.clampNegativeToZero(); | |
| bottomLeft.expand(shadowSpread, shadowSpread); | |
| bottomLeft.clampNegativeToZero(); | |
| bottomRight.expand(shadowSpread, shadowSpread); | |
| bottomRight.clampNegativeToZero(); | |
| } | |
| // If the box is opaque, it is unnecessary to clip it out. However, doing so saves time | |
| // when painting the shadow. On the other hand, it introduces subpixel gaps along the | |
| // corners. Those are avoided by insetting the clipping path by one pixel. | |
| if (hasOpaqueBackground) { | |
| rectToClipOut.inflate(-1); | |
| topLeftToClipOut.expand(-1, -1); | |
| topLeftToClipOut.clampNegativeToZero(); | |
| topRightToClipOut.expand(-1, -1); | |
| topRightToClipOut.clampNegativeToZero(); | |
| bottomLeftToClipOut.expand(-1, -1); | |
| bottomLeftToClipOut.clampNegativeToZero(); | |
| bottomRightToClipOut.expand(-1, -1); | |
| bottomRightToClipOut.clampNegativeToZero(); | |
| } | |
| if (!rectToClipOut.isEmpty()) | |
| context->clipOutRoundedRect(rectToClipOut, topLeftToClipOut, topRightToClipOut, bottomLeftToClipOut, bottomRightToClipOut); | |
| context->fillRoundedRect(fillRect, topLeft, topRight, bottomLeft, bottomRight, Color::black, s->colorSpace()); | |
| } else { | |
| IntRect rectToClipOut = rect; | |
| // If the box is opaque, it is unnecessary to clip it out. However, doing so saves time | |
| // when painting the shadow. On the other hand, it introduces subpixel gaps along the | |
| // edges if they are not pixel-aligned. Those are avoided by insetting the clipping path | |
| // by one pixel. | |
| if (hasOpaqueBackground) { | |
| AffineTransform currentTransformation = context->getCTM(); | |
| if (currentTransformation.a() != 1 || (currentTransformation.d() != 1 && currentTransformation.d() != -1) | |
| || currentTransformation.b() || currentTransformation.c()) | |
| rectToClipOut.inflate(-1); | |
| } | |
| if (!rectToClipOut.isEmpty()) | |
| context->clipOut(rectToClipOut); | |
| context->fillRect(fillRect, Color::black, s->colorSpace()); | |
| } | |
| context->restore(); | |
| } else { | |
| // Inset shadow. | |
| IntRect holeRect(rect); | |
| holeRect.inflate(-shadowSpread); | |
| if (holeRect.isEmpty()) { | |
| if (hasBorderRadius) | |
| context->fillRoundedRect(rect, topLeft, topRight, bottomLeft, bottomRight, shadowColor, s->colorSpace()); | |
| else | |
| context->fillRect(rect, shadowColor, s->colorSpace()); | |
| continue; | |
| } | |
| if (!begin) { | |
| holeRect.move(-max(shadowOffset.width(), 0) - shadowBlur, 0); | |
| holeRect.setWidth(holeRect.width() + max(shadowOffset.width(), 0) + shadowBlur); | |
| } | |
| if (!end) | |
| holeRect.setWidth(holeRect.width() - min(shadowOffset.width(), 0) + shadowBlur); | |
| Color fillColor(shadowColor.red(), shadowColor.green(), shadowColor.blue(), 255); | |
| IntRect outerRect(rect); | |
| outerRect.inflateX(w - 2 * shadowSpread); | |
| outerRect.inflateY(h - 2 * shadowSpread); | |
| context->save(); | |
| if (hasBorderRadius) | |
| context->clip(Path::createRoundedRectangle(rect, topLeft, topRight, bottomLeft, bottomRight)); | |
| else | |
| context->clip(rect); | |
| IntSize extraOffset(2 * w + max(0, shadowOffset.width()) + shadowBlur - 2 * shadowSpread + 1, 0); | |
| context->translate(extraOffset.width(), extraOffset.height()); | |
| shadowOffset -= extraOffset; | |
| context->beginPath(); | |
| context->addPath(Path::createRectangle(outerRect)); | |
| if (hasBorderRadius) { | |
| if (shadowSpread > 0) { | |
| topLeft.expand(-shadowSpread, -shadowSpread); | |
| topLeft.clampNegativeToZero(); | |
| topRight.expand(-shadowSpread, -shadowSpread); | |
| topRight.clampNegativeToZero(); | |
| bottomLeft.expand(-shadowSpread, -shadowSpread); | |
| bottomLeft.clampNegativeToZero(); | |
| bottomRight.expand(-shadowSpread, -shadowSpread); | |
| bottomRight.clampNegativeToZero(); | |
| } | |
| context->addPath(Path::createRoundedRectangle(holeRect, topLeft, topRight, bottomLeft, bottomRight)); | |
| } else | |
| context->addPath(Path::createRectangle(holeRect)); | |
| context->setFillRule(RULE_EVENODD); | |
| context->setFillColor(fillColor, s->colorSpace()); | |
| context->setShadow(shadowOffset, shadowBlur, shadowColor, s->colorSpace()); | |
| context->fillPath(); | |
| context->restore(); | |
| } | |
| } | |
| } | |
| int RenderBoxModelObject::containingBlockWidthForContent() const | |
| { | |
| return containingBlock()->availableWidth(); | |
| } | |
| } // namespace WebCore |