Implement interfaces in PaintInfo and make it a class.

Source/core/rendering/RenderBox.cpp

 /*
  * 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, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. 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
@@ skipping 1038 matching lines @@
 void RenderBox::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     LayoutPoint adjustedPaintOffset = paintOffset + location();
     // default implementation. Just pass paint through to the children
     PaintInfo childInfo(paintInfo);
     childInfo.updatePaintingRootForChildren(this);
     for (RenderObject* child = firstChild(); child; child = child->nextSibling())
         child->paint(childInfo, adjustedPaintOffset);
 }
 
-void RenderBox::paintRootBoxFillLayers(const PaintInfo& paintInfo)
+void RenderBox::paintRootBoxFillLayers(PaintInfo& paintInfo)
 {
     if (paintInfo.skipRootBackground())
         return;
 
     RenderObject* rootBackgroundRenderer = rendererForRootBackground();
 
     const FillLayer* bgLayer = rootBackgroundRenderer->style()->backgroundLayers();
     Color bgColor = rootBackgroundRenderer->resolveColor(CSSPropertyBackgroundColor);
 
     paintFillLayers(paintInfo, bgColor, bgLayer, view()->backgroundRect(this), BackgroundBleedNone, CompositeSourceOver, rootBackgroundRenderer);
@@ skipping 32 matching lines @@
         return BackgroundBleedBackgroundOverBorder;
 
     return BackgroundBleedUseTransparencyLayer;
 }
 
 void RenderBox::paintBoxDecorations(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     if (!paintInfo.shouldPaintWithinRoot(this))
         return;
 
-    LayoutRect paintRect = borderBoxRectInRegion(paintInfo.renderRegion);
+    LayoutRect paintRect = borderBoxRectInRegion(paintInfo.getRenderRegion());
     paintRect.moveBy(paintOffset);
 
-    BackgroundBleedAvoidance bleedAvoidance = determineBackgroundBleedAvoidance(paintInfo.context);
+    BackgroundBleedAvoidance bleedAvoidance = determineBackgroundBleedAvoidance(paintInfo.getContext());
 
     // FIXME: Should eventually give the theme control over whether the box shadow should paint, since controls could have
     // custom shadows of their own.
     if (!boxShadowShouldBeAppliedToBackground(bleedAvoidance))
         paintBoxShadow(paintInfo, paintRect, style(), Normal);
 
-    GraphicsContextStateSaver stateSaver(*paintInfo.context, false);
+    GraphicsContextStateSaver stateSaver(*(paintInfo.getContext()), false);
     if (bleedAvoidance == BackgroundBleedUseTransparencyLayer) {
         // To avoid the background color bleeding out behind the border, we'll render background and border
         // into a transparency layer, and then clip that in one go (which requires setting up the clip before
         // beginning the layer).
         RoundedRect border = style()->getRoundedBorderFor(paintRect, view());
         stateSaver.save();
-        paintInfo.context->clipRoundedRect(border);
-        paintInfo.context->beginTransparencyLayer(1);
+        paintInfo.getContext()->clipRoundedRect(border);
+        paintInfo.getContext()->beginTransparencyLayer(1);
     }
 
     // If we have a native theme appearance, paint that before painting our background.
     // The theme will tell us whether or not we should also paint the CSS background.
     IntRect snappedPaintRect(pixelSnappedIntRect(paintRect));
     bool themePainted = style()->hasAppearance() && !theme()->paint(this, paintInfo, snappedPaintRect);
     if (!themePainted) {
         if (bleedAvoidance == BackgroundBleedBackgroundOverBorder)
             paintBorder(paintInfo, paintRect, style(), bleedAvoidance);
 
         paintBackground(paintInfo, paintRect, bleedAvoidance);
 
         if (style()->hasAppearance())
             theme()->paintDecorations(this, paintInfo, snappedPaintRect);
     }
     paintBoxShadow(paintInfo, paintRect, style(), Inset);
 
     // The theme will tell us whether or not we should also paint the CSS border.
     if (bleedAvoidance != BackgroundBleedBackgroundOverBorder && (!style()->hasAppearance() || (!themePainted && theme()->paintBorderOnly(this, paintInfo, snappedPaintRect))) && style()->hasBorder())
         paintBorder(paintInfo, paintRect, style(), bleedAvoidance);
 
     if (bleedAvoidance == BackgroundBleedUseTransparencyLayer)
-        paintInfo.context->endTransparencyLayer();
+        paintInfo.getContext()->endTransparencyLayer();
 }
 
-void RenderBox::paintBackground(const PaintInfo& paintInfo, const LayoutRect& paintRect, BackgroundBleedAvoidance bleedAvoidance)
+void RenderBox::paintBackground(PaintInfo& paintInfo, const LayoutRect& paintRect, BackgroundBleedAvoidance bleedAvoidance)
 {
     if (isRoot()) {
         paintRootBoxFillLayers(paintInfo);
         return;
     }
     if (isBody() && skipBodyBackground(this))
         return;
     if (backgroundIsKnownToBeObscured())
         return;
     paintFillLayers(paintInfo, resolveColor(CSSPropertyBackgroundColor), style()->backgroundLayers(), paintRect, bleedAvoidance);
@@ skipping 140 matching lines @@
         StyleColor bgColor = resolveStyleColor(CSSPropertyBackgroundColor);
         if (bgColor.isValid() && bgColor.alpha() == 255)
             return true;
     }
 
     return false;
 }
 
 void RenderBox::paintMask(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
-    if (!paintInfo.shouldPaintWithinRoot(this) || style()->visibility() != VISIBLE || paintInfo.phase != PaintPhaseMask || paintInfo.context->paintingDisabled())
+    if (!paintInfo.shouldPaintWithinRoot(this) || style()->visibility() != VISIBLE || paintInfo.getPhase() != PaintPhaseMask || paintInfo.getContext()->paintingDisabled())
         return;
 
     LayoutRect paintRect = LayoutRect(paintOffset, size());
     paintMaskImages(paintInfo, paintRect);
 }
 
-void RenderBox::paintMaskImages(const PaintInfo& paintInfo, const LayoutRect& paintRect)
+void RenderBox::paintMaskImages(PaintInfo& paintInfo, const LayoutRect& paintRect)
 {
     // Figure out if we need to push a transparency layer to render our mask.
     bool pushTransparencyLayer = false;
     bool compositedMask = hasLayer() && layer()->hasCompositedMask();
     bool flattenCompositingLayers = view()->frameView() && view()->frameView()->paintBehavior() & PaintBehaviorFlattenCompositingLayers;
     CompositeOperator compositeOp = CompositeSourceOver;
 
     bool allMaskImagesLoaded = true;
 
     if (!compositedMask || flattenCompositingLayers) {
         pushTransparencyLayer = true;
         StyleImage* maskBoxImage = style()->maskBoxImage().image();
         const FillLayer* maskLayers = style()->maskLayers();
 
         // Don't render a masked element until all the mask images have loaded, to prevent a flash of unmasked content.
         if (maskBoxImage)
             allMaskImagesLoaded &= maskBoxImage->isLoaded();
 
         if (maskLayers)
             allMaskImagesLoaded &= maskLayers->imagesAreLoaded();
 
-        paintInfo.context->setCompositeOperation(CompositeDestinationIn);
-        paintInfo.context->beginTransparencyLayer(1);
+        paintInfo.getContext()->setCompositeOperation(CompositeDestinationIn);
+        paintInfo.getContext()->beginTransparencyLayer(1);
         compositeOp = CompositeSourceOver;
     }
 
     if (allMaskImagesLoaded) {
         paintFillLayers(paintInfo, Color(), style()->maskLayers(), paintRect, BackgroundBleedNone, compositeOp);
-        paintNinePieceImage(paintInfo.context, paintRect, style(), style()->maskBoxImage(), compositeOp);
+        paintNinePieceImage(paintInfo.getContext(), paintRect, style(), style()->maskBoxImage(), compositeOp);
     }
 
     if (pushTransparencyLayer)
-        paintInfo.context->endTransparencyLayer();
+        paintInfo.getContext()->endTransparencyLayer();
 }
 
 LayoutRect RenderBox::maskClipRect()
 {
     const NinePieceImage& maskBoxImage = style()->maskBoxImage();
     if (maskBoxImage.image()) {
         LayoutRect borderImageRect = borderBoxRect();
 
         // Apply outsets to the border box.
         borderImageRect.expand(style()->maskBoxImageOutsets());
         return borderImageRect;
     }
 
     LayoutRect result;
     LayoutRect borderBox = borderBoxRect();
     for (const FillLayer* maskLayer = style()->maskLayers(); maskLayer; maskLayer = maskLayer->next()) {
         if (maskLayer->image()) {
             BackgroundImageGeometry geometry;
             calculateBackgroundImageGeometry(maskLayer, borderBox, geometry);
             result.unite(geometry.destRect());
         }
     }
     return result;
 }
 
-void RenderBox::paintFillLayers(const PaintInfo& paintInfo, const Color& c, const FillLayer* fillLayer, const LayoutRect& rect,
+void RenderBox::paintFillLayers(PaintInfo& paintInfo, const Color& c, const FillLayer* fillLayer, const LayoutRect& rect,
     BackgroundBleedAvoidance bleedAvoidance, CompositeOperator op, RenderObject* backgroundObject)
 {
     Vector<const FillLayer*, 8> layers;
     const FillLayer* curLayer = fillLayer;
     bool shouldDrawBackgroundInSeparateBuffer = false;
     while (curLayer) {
         layers.append(curLayer);
         // Stop traversal when an opaque layer is encountered.
         // FIXME : It would be possible for the following occlusion culling test to be more aggressive
         // on layers with no repeat by testing whether the image covers the layout rect.
         // Testing that here would imply duplicating a lot of calculations that are currently done in
         // RenderBoxModelObject::paintFillLayerExtended. A more efficient solution might be to move
         // the layer recursion into paintFillLayerExtended, or to compute the layer geometry here
         // and pass it down.
 
         if (!shouldDrawBackgroundInSeparateBuffer && curLayer->blendMode() != BlendModeNormal)
             shouldDrawBackgroundInSeparateBuffer = true;
 
         // The clipOccludesNextLayers condition must be evaluated first to avoid short-circuiting.
         if (curLayer->clipOccludesNextLayers(curLayer == fillLayer) && curLayer->hasOpaqueImage(this) && curLayer->image()->canRender(this, style()->effectiveZoom()) && curLayer->hasRepeatXY() && curLayer->blendMode() == BlendModeNormal)
             break;
         curLayer = curLayer->next();
     }
 
-    GraphicsContext* context = paintInfo.context;
+    GraphicsContext* context = paintInfo.getContext();
     if (!context)
         shouldDrawBackgroundInSeparateBuffer = false;
     if (shouldDrawBackgroundInSeparateBuffer)
         context->beginTransparencyLayer(1);
 
     Vector<const FillLayer*>::const_reverse_iterator topLayer = layers.rend();
     for (Vector<const FillLayer*>::const_reverse_iterator it = layers.rbegin(); it != topLayer; ++it)
         paintFillLayer(paintInfo, c, *it, rect, bleedAvoidance, op, backgroundObject);
 
     if (shouldDrawBackgroundInSeparateBuffer)
         context->endTransparencyLayer();
 }
 
-void RenderBox::paintFillLayer(const PaintInfo& paintInfo, const Color& c, const FillLayer* fillLayer, const LayoutRect& rect,
+void RenderBox::paintFillLayer(PaintInfo& paintInfo, const Color& c, const FillLayer* fillLayer, const LayoutRect& rect,
     BackgroundBleedAvoidance bleedAvoidance, CompositeOperator op, RenderObject* backgroundObject)
 {
     paintFillLayerExtended(paintInfo, c, fillLayer, rect, bleedAvoidance, 0, LayoutSize(), op, backgroundObject);
 }
 
 static bool layersUseImage(WrappedImagePtr image, const FillLayer* layers)
 {
     for (const FillLayer* curLayer = layers; curLayer; curLayer = curLayer->next()) {
         if (curLayer->image() && image == curLayer->image()->data())
             return true;
@@ skipping 61 matching lines @@
             layerRenderer->repaintRectangle(geometry.destRect());
             if (geometry.destRect() == rendererRect)
                 return true;
         }
     }
     return false;
 }
 
 bool RenderBox::pushContentsClip(PaintInfo& paintInfo, const LayoutPoint& accumulatedOffset)
 {
-    if (paintInfo.phase == PaintPhaseBlockBackground || paintInfo.phase == PaintPhaseSelfOutline || paintInfo.phase == PaintPhaseMask)
+    if (paintInfo.getPhase() == PaintPhaseBlockBackground || paintInfo.getPhase() == PaintPhaseSelfOutline || paintInfo.getPhase() == PaintPhaseMask)
         return false;
 
     bool isControlClip = hasControlClip();
     bool isOverflowClip = hasOverflowClip() && !layer()->isSelfPaintingLayer();
 
     if (!isControlClip && !isOverflowClip)
         return false;
 
-    if (paintInfo.phase == PaintPhaseOutline)
-        paintInfo.phase = PaintPhaseChildOutlines;
-    else if (paintInfo.phase == PaintPhaseChildBlockBackground) {
-        paintInfo.phase = PaintPhaseBlockBackground;
+    if (paintInfo.getPhase() == PaintPhaseOutline) {
+        paintInfo.setPhase(PaintPhaseChildOutlines);
+    } else if (paintInfo.getPhase() == PaintPhaseChildBlockBackground) {
+        paintInfo.setPhase(PaintPhaseBlockBackground);
         paintObject(paintInfo, accumulatedOffset);
-        paintInfo.phase = PaintPhaseChildBlockBackgrounds;
+        paintInfo.setPhase(PaintPhaseChildBlockBackgrounds);
     }
-    IntRect clipRect = pixelSnappedIntRect(isControlClip ? controlClipRect(accumulatedOffset) : overflowClipRect(accumulatedOffset, paintInfo.renderRegion));
-    paintInfo.context->save();
+    IntRect clipRect = pixelSnappedIntRect(isControlClip ? controlClipRect(accumulatedOffset) : overflowClipRect(accumulatedOffset, paintInfo.getRenderRegion()));
+    paintInfo.getContext()->save();
     if (style()->hasBorderRadius())
-        paintInfo.context->clipRoundedRect(style()->getRoundedInnerBorderFor(LayoutRect(accumulatedOffset, size())));
-    paintInfo.context->clip(clipRect);
+        paintInfo.getContext()->clipRoundedRect(style()->getRoundedInnerBorderFor(LayoutRect(accumulatedOffset, size())));
+    paintInfo.getContext()->clip(clipRect);
     return true;
 }
 
 void RenderBox::popContentsClip(PaintInfo& paintInfo, PaintPhase originalPhase, const LayoutPoint& accumulatedOffset)
 {
     ASSERT(hasControlClip() || (hasOverflowClip() && !layer()->isSelfPaintingLayer()));
 
-    paintInfo.context->restore();
+    paintInfo.getContext()->restore();
     if (originalPhase == PaintPhaseOutline) {
-        paintInfo.phase = PaintPhaseSelfOutline;
+        paintInfo.setPhase(PaintPhaseSelfOutline);
         paintObject(paintInfo, accumulatedOffset);
-        paintInfo.phase = originalPhase;
-    } else if (originalPhase == PaintPhaseChildBlockBackground)
-        paintInfo.phase = originalPhase;
+        paintInfo.setPhase(originalPhase);
+    } else if (originalPhase == PaintPhaseChildBlockBackground) {
+        paintInfo.setPhase(originalPhase);
+    }
 }
 
 LayoutRect RenderBox::overflowClipRect(const LayoutPoint& location, RenderRegion* region, OverlayScrollbarSizeRelevancy relevancy)
 {
     // FIXME: When overflow-clip (CSS3) is implemented, we'll obtain the property
     // here.
     LayoutRect clipRect = borderBoxRectInRegion(region);
     clipRect.setLocation(location + clipRect.location() + LayoutSize(borderLeft(), borderTop()));
     clipRect.setSize(clipRect.size() - LayoutSize(borderLeft() + borderRight(), borderTop() + borderBottom()));
 
@@ skipping 3121 matching lines @@
     }
 
     if (didSplitParentAnonymousBoxes)
         markBoxForRelayoutAfterSplit(this);
 
     ASSERT(beforeChild->parent() == this);
     return beforeChild;
 }
 
 } // namespace WebCore