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      1 /*
      2  * Copyright (C) 2008 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include "config.h"
     30 #include "core/rendering/RenderReplica.h"
     31 
     32 #include "core/rendering/RenderLayer.h"
     33 
     34 namespace WebCore {
     35 
     36 RenderReplica::RenderReplica()
     37     : RenderBox(0)
     38 {
     39     // This is a hack. Replicas are synthetic, and don't pick up the attributes of the
     40     // renderers being replicated, so they always report that they are inline, non-replaced.
     41     // However, we need transforms to be applied to replicas for reflections, so have to pass
     42     // the if (!isInline() || isReplaced()) check before setHasTransform().
     43     setReplaced(true);
     44 }
     45 
     46 RenderReplica* RenderReplica::createAnonymous(Document* document)
     47 {
     48     RenderReplica* renderer = new RenderReplica();
     49     renderer->setDocumentForAnonymous(document);
     50     return renderer;
     51 }
     52 
     53 RenderReplica::~RenderReplica()
     54 {
     55 }
     56 
     57 void RenderReplica::layout()
     58 {
     59     StackStats::LayoutCheckPoint layoutCheckPoint;
     60     setFrameRect(parentBox()->borderBoxRect());
     61     updateLayerTransform();
     62     clearNeedsLayout();
     63 }
     64 
     65 void RenderReplica::computePreferredLogicalWidths()
     66 {
     67     m_minPreferredLogicalWidth = parentBox()->width();
     68     m_maxPreferredLogicalWidth = m_minPreferredLogicalWidth;
     69     setPreferredLogicalWidthsDirty(false);
     70 }
     71 
     72 void RenderReplica::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
     73 {
     74     ANNOTATE_GRAPHICS_CONTEXT(paintInfo, this);
     75 
     76     if (paintInfo.phase != PaintPhaseForeground && paintInfo.phase != PaintPhaseMask)
     77         return;
     78 
     79     LayoutPoint adjustedPaintOffset = paintOffset + location();
     80 
     81     if (paintInfo.phase == PaintPhaseForeground) {
     82         // Turn around and paint the parent layer. Use temporary clipRects, so that the layer doesn't end up caching clip rects
     83         // computing using the wrong rootLayer
     84         RenderLayer* rootPaintingLayer = layer()->transform() ? layer()->parent() : layer()->enclosingTransformedAncestor();
     85         RenderLayer::LayerPaintingInfo paintingInfo(rootPaintingLayer, paintInfo.rect, PaintBehaviorNormal, LayoutSize(), 0, paintInfo.renderRegion);
     86         RenderLayer::PaintLayerFlags flags = RenderLayer::PaintLayerHaveTransparency | RenderLayer::PaintLayerAppliedTransform | RenderLayer::PaintLayerTemporaryClipRects | RenderLayer::PaintLayerPaintingReflection;
     87         layer()->parent()->paintLayer(paintInfo.context, paintingInfo, flags);
     88     } else if (paintInfo.phase == PaintPhaseMask)
     89         paintMask(paintInfo, adjustedPaintOffset);
     90 }
     91 
     92 } // namespace WebCore
     93