Use enum classes and OptionSets for PaintPhase and PaintBehavior
[WebKit-https.git] / Source / WebCore / rendering / svg / SVGRootInlineBox.cpp
index 34e93a0..9719342 100644 (file)
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2006 Oliver Hunt <ojh16@student.canterbury.ac.nz>
- * Copyright (C) 2006 Apple Computer Inc.
+ * Copyright (C) 2006 Apple Inc.
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  * Copyright (C) 2011 Torch Mobile (Beijing) CO. Ltd. All rights reserved.
 #include "config.h"
 #include "SVGRootInlineBox.h"
 
-#if ENABLE(SVG)
 #include "GraphicsContext.h"
-#include "RenderSVGInlineText.h"
 #include "RenderSVGText.h"
+#include "RenderSVGTextPath.h"
 #include "SVGInlineFlowBox.h"
 #include "SVGInlineTextBox.h"
 #include "SVGNames.h"
 #include "SVGRenderingContext.h"
 #include "SVGTextPositioningElement.h"
+#include <wtf/IsoMallocInlines.h>
 
 namespace WebCore {
 
-void SVGRootInlineBox::paint(PaintInfo& paintInfo, const LayoutPoint&, LayoutUnit, LayoutUnit)
+WTF_MAKE_ISO_ALLOCATED_IMPL(SVGRootInlineBox);
+
+SVGRootInlineBox::SVGRootInlineBox(RenderSVGText& renderSVGText)
+    : RootInlineBox(renderSVGText)
+    , m_logicalHeight(0)
 {
-    ASSERT(paintInfo.phase == PaintPhaseForeground || paintInfo.phase == PaintPhaseSelection);
-    ASSERT(!paintInfo.context->paintingDisabled());
+}
+
+RenderSVGText& SVGRootInlineBox::renderSVGText()
+{
+    return downcast<RenderSVGText>(blockFlow());
+}
 
-    RenderObject* boxRenderer = renderer();
-    ASSERT(boxRenderer);
+void SVGRootInlineBox::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit, LayoutUnit)
+{
+    ASSERT(paintInfo.phase == PaintPhase::Foreground || paintInfo.phase == PaintPhase::Selection);
+    ASSERT(!paintInfo.context().paintingDisabled());
 
-    bool isPrinting = renderer()->document()->printing();
+    bool isPrinting = renderSVGText().document().printing();
     bool hasSelection = !isPrinting && selectionState() != RenderObject::SelectionNone;
+    bool shouldPaintSelectionHighlight = !(paintInfo.paintBehavior.contains(PaintBehavior::SkipSelectionHighlight));
 
     PaintInfo childPaintInfo(paintInfo);
-    if (hasSelection) {
+    if (hasSelection && shouldPaintSelectionHighlight) {
         for (InlineBox* child = firstChild(); child; child = child->nextOnLine()) {
-            if (child->isSVGInlineTextBox())
-                static_cast<SVGInlineTextBox*>(child)->paintSelectionBackground(childPaintInfo);
-            else if (child->isSVGInlineFlowBox())
-                static_cast<SVGInlineFlowBox*>(child)->paintSelectionBackground(childPaintInfo);
+            if (is<SVGInlineTextBox>(*child))
+                downcast<SVGInlineTextBox>(*child).paintSelectionBackground(childPaintInfo);
+            else if (is<SVGInlineFlowBox>(*child))
+                downcast<SVGInlineFlowBox>(*child).paintSelectionBackground(childPaintInfo);
         }
     }
 
-    SVGRenderingContext renderingContext(boxRenderer, paintInfo, SVGRenderingContext::SaveGraphicsContext);
+    SVGRenderingContext renderingContext(renderSVGText(), paintInfo, SVGRenderingContext::SaveGraphicsContext);
     if (renderingContext.isRenderingPrepared()) {
-        for (InlineBox* child = firstChild(); child; child = child->nextOnLine()) {
-            if (child->isSVGInlineTextBox())
-                SVGInlineFlowBox::computeTextMatchMarkerRectForRenderer(toRenderSVGInlineText(static_cast<SVGInlineTextBox*>(child)->textRenderer()));
-
-            child->paint(paintInfo, LayoutPoint(), 0, 0);
-        }
+        for (InlineBox* child = firstChild(); child; child = child->nextOnLine())
+            child->paint(paintInfo, paintOffset, 0, 0);
     }
 }
 
 void SVGRootInlineBox::computePerCharacterLayoutInformation()
 {
-    RenderSVGText* textRoot = toRenderSVGText(block());
-    ASSERT(textRoot);
+    auto& textRoot = downcast<RenderSVGText>(blockFlow());
 
-    Vector<SVGTextLayoutAttributes*>& layoutAttributes = textRoot->layoutAttributes();
+    Vector<SVGTextLayoutAttributes*>& layoutAttributes = textRoot.layoutAttributes();
     if (layoutAttributes.isEmpty())
         return;
 
-    if (textRoot->needsReordering())
+    if (textRoot.needsReordering())
         reorderValueLists(layoutAttributes);
 
     // Perform SVG text layout phase two (see SVGTextLayoutEngine for details).
@@ -97,32 +103,27 @@ void SVGRootInlineBox::computePerCharacterLayoutInformation()
 void SVGRootInlineBox::layoutCharactersInTextBoxes(InlineFlowBox* start, SVGTextLayoutEngine& characterLayout)
 {
     for (InlineBox* child = start->firstChild(); child; child = child->nextOnLine()) {
-        if (child->isSVGInlineTextBox()) {
-            ASSERT(child->renderer());
-            ASSERT(child->renderer()->isSVGInlineText());
-
-            SVGInlineTextBox* textBox = static_cast<SVGInlineTextBox*>(child);
-            characterLayout.layoutInlineTextBox(textBox);
+        if (is<SVGInlineTextBox>(*child)) {
+            ASSERT(is<RenderSVGInlineText>(child->renderer()));
+            characterLayout.layoutInlineTextBox(downcast<SVGInlineTextBox>(*child));
         } else {
             // Skip generated content.
-            Node* node = child->renderer()->node();
+            Node* node = child->renderer().node();
             if (!node)
                 continue;
 
-            ASSERT(child->isInlineFlowBox());
-
-            SVGInlineFlowBox* flowBox = static_cast<SVGInlineFlowBox*>(child);
+            auto& flowBox = downcast<SVGInlineFlowBox>(*child);
             bool isTextPath = node->hasTagName(SVGNames::textPathTag);
             if (isTextPath) {
                 // Build text chunks for all <textPath> children, using the line layout algorithm.
                 // This is needeed as text-anchor is just an additional startOffset for text paths.
                 SVGTextLayoutEngine lineLayout(characterLayout.layoutAttributes());
-                layoutCharactersInTextBoxes(flowBox, lineLayout);
+                layoutCharactersInTextBoxes(&flowBox, lineLayout);
 
-                characterLayout.beginTextPathLayout(child->renderer(), lineLayout);
+                characterLayout.beginTextPathLayout(downcast<RenderSVGTextPath>(child->renderer()), lineLayout);
             }
 
-            layoutCharactersInTextBoxes(flowBox, characterLayout);
+            layoutCharactersInTextBoxes(&flowBox, characterLayout);
 
             if (isTextPath)
                 characterLayout.endTextPathLayout();
@@ -134,31 +135,28 @@ void SVGRootInlineBox::layoutChildBoxes(InlineFlowBox* start, FloatRect* childRe
 {
     for (InlineBox* child = start->firstChild(); child; child = child->nextOnLine()) {
         FloatRect boxRect;
-        if (child->isSVGInlineTextBox()) {
-            ASSERT(child->renderer());
-            ASSERT(child->renderer()->isSVGInlineText());
-
-            SVGInlineTextBox* textBox = static_cast<SVGInlineTextBox*>(child);
-            boxRect = textBox->calculateBoundaries();
-            textBox->setX(boxRect.x());
-            textBox->setY(boxRect.y());
-            textBox->setLogicalWidth(boxRect.width());
-            textBox->setLogicalHeight(boxRect.height());
+        if (is<SVGInlineTextBox>(*child)) {
+            ASSERT(is<RenderSVGInlineText>(child->renderer()));
+
+            auto& textBox = downcast<SVGInlineTextBox>(*child);
+            boxRect = textBox.calculateBoundaries();
+            textBox.setX(boxRect.x());
+            textBox.setY(boxRect.y());
+            textBox.setLogicalWidth(boxRect.width());
+            textBox.setLogicalHeight(boxRect.height());
         } else {
             // Skip generated content.
-            if (!child->renderer()->node())
+            if (!child->renderer().node())
                 continue;
 
-            ASSERT(child->isInlineFlowBox());
-
-            SVGInlineFlowBox* flowBox = static_cast<SVGInlineFlowBox*>(child);
-            layoutChildBoxes(flowBox);
+            auto& flowBox = downcast<SVGInlineFlowBox>(*child);
+            layoutChildBoxes(&flowBox);
 
-            boxRect = flowBox->calculateBoundaries();
-            flowBox->setX(boxRect.x());
-            flowBox->setY(boxRect.y());
-            flowBox->setLogicalWidth(boxRect.width());
-            flowBox->setLogicalHeight(boxRect.height());
+            boxRect = flowBox.calculateBoundaries();
+            flowBox.setX(boxRect.x());
+            flowBox.setY(boxRect.y());
+            flowBox.setLogicalWidth(boxRect.width());
+            flowBox.setLogicalHeight(boxRect.height());
         }
         if (childRect)
             childRect->unite(boxRect);
@@ -167,18 +165,17 @@ void SVGRootInlineBox::layoutChildBoxes(InlineFlowBox* start, FloatRect* childRe
 
 void SVGRootInlineBox::layoutRootBox(const FloatRect& childRect)
 {
-    RenderBlock* parentBlock = block();
-    ASSERT(parentBlock);
+    RenderSVGText& parentBlock = renderSVGText();
 
     // Finally, assign the root block position, now that all content is laid out.
-    IntRect roundedChildRect = enclosingIntRect(childRect);
-    parentBlock->setLocation(roundedChildRect.location());
-    parentBlock->setSize(roundedChildRect.size());
+    LayoutRect boundingRect = enclosingLayoutRect(childRect);
+    parentBlock.setLocation(boundingRect.location());
+    parentBlock.setSize(boundingRect.size());
 
     // Position all children relative to the parent block.
     for (InlineBox* child = firstChild(); child; child = child->nextOnLine()) {
         // Skip generated content.
-        if (!child->renderer()->node())
+        if (!child->renderer().node())
             continue;
         child->adjustPosition(-childRect.x(), -childRect.y());
     }
@@ -188,7 +185,7 @@ void SVGRootInlineBox::layoutRootBox(const FloatRect& childRect)
     setY(0);
     setLogicalWidth(childRect.width());
     setLogicalHeight(childRect.height());
-    setLineTopBottomPositions(0, roundedChildRect.height(), 0, roundedChildRect.height());
+    setLineTopBottomPositions(0, boundingRect.height(), 0, boundingRect.height());
 }
 
 InlineBox* SVGRootInlineBox::closestLeafChildForPosition(const LayoutPoint& point)
@@ -199,7 +196,7 @@ InlineBox* SVGRootInlineBox::closestLeafChildForPosition(const LayoutPoint& poin
         return firstLeaf;
 
     // FIXME: Check for vertical text!
-    InlineBox* closestLeaf = 0;
+    InlineBox* closestLeaf = nullptr;
     for (InlineBox* leaf = firstLeaf; leaf; leaf = leaf->nextLeafChild()) {
         if (!leaf->isSVGInlineTextBox())
             continue;
@@ -216,6 +213,18 @@ InlineBox* SVGRootInlineBox::closestLeafChildForPosition(const LayoutPoint& poin
     return closestLeaf ? closestLeaf : lastLeaf;
 }
 
+bool SVGRootInlineBox::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, LayoutUnit lineTop, LayoutUnit lineBottom, HitTestAction hitTestAction)
+{
+    for (InlineBox* leaf = firstLeafChild(); leaf; leaf = leaf->nextLeafChild()) {
+        if (!leaf->isSVGInlineTextBox())
+            continue;
+        if (leaf->nodeAtPoint(request, result, locationInContainer, accumulatedOffset, lineTop, lineBottom, hitTestAction))
+            return true;
+    }
+
+    return false;
+}
+
 static inline void swapItemsInLayoutAttributes(SVGTextLayoutAttributes* firstAttributes, SVGTextLayoutAttributes* lastAttributes, unsigned firstPosition, unsigned lastPosition)
 {
     SVGCharacterDataMap::iterator itFirst = firstAttributes->characterDataMap().find(firstPosition + 1);
@@ -226,31 +235,31 @@ static inline void swapItemsInLayoutAttributes(SVGTextLayoutAttributes* firstAtt
         return;
 
     if (firstPresent && lastPresent) {
-        std::swap(itFirst->second, itLast->second);
+        std::swap(itFirst->value, itLast->value);
         return;
     }
 
     if (firstPresent && !lastPresent) {
-        lastAttributes->characterDataMap().set(lastPosition + 1, itFirst->second);
+        lastAttributes->characterDataMap().set(lastPosition + 1, itFirst->value);
         return;
     }
 
     // !firstPresent && lastPresent
-    firstAttributes->characterDataMap().set(firstPosition + 1, itLast->second);
+    firstAttributes->characterDataMap().set(firstPosition + 1, itLast->value);
 }
 
 static inline void findFirstAndLastAttributesInVector(Vector<SVGTextLayoutAttributes*>& attributes, RenderSVGInlineText* firstContext, RenderSVGInlineText* lastContext,
                                                       SVGTextLayoutAttributes*& first, SVGTextLayoutAttributes*& last)
 {
-    first = 0;
-    last = 0;
+    first = nullptr;
+    last = nullptr;
 
     unsigned attributesSize = attributes.size();
     for (unsigned i = 0; i < attributesSize; ++i) {
         SVGTextLayoutAttributes* current = attributes[i];
-        if (!first && firstContext == current->context())
+        if (!first && firstContext == &current->context())
             first = current;
-        if (!last && lastContext == current->context())
+        if (!last && lastContext == &current->context())
             last = current;
         if (first && last)
             break;
@@ -270,7 +279,7 @@ static inline void reverseInlineBoxRangeAndValueListsIfNeeded(void* userData, Ve
         if (first == last || first == --last)
             return;
 
-        if (!(*last)->isSVGInlineTextBox() || !(*first)->isSVGInlineTextBox()) {
+        if (!is<SVGInlineTextBox>(**last) || !is<SVGInlineTextBox>(**first)) {
             InlineBox* temp = *first;
             *first = *last;
             *last = temp;
@@ -278,18 +287,18 @@ static inline void reverseInlineBoxRangeAndValueListsIfNeeded(void* userData, Ve
             continue;
         }
 
-        SVGInlineTextBox* firstTextBox = static_cast<SVGInlineTextBox*>(*first);
-        SVGInlineTextBox* lastTextBox = static_cast<SVGInlineTextBox*>(*last);
+        auto& firstTextBox = downcast<SVGInlineTextBox>(**first);
+        auto& lastTextBox = downcast<SVGInlineTextBox>(**last);
 
         // Reordering is only necessary for BiDi text that is _absolutely_ positioned.
-        if (firstTextBox->len() == 1 && firstTextBox->len() == lastTextBox->len()) {
-            RenderSVGInlineText* firstContext = toRenderSVGInlineText(firstTextBox->textRenderer());
-            RenderSVGInlineText* lastContext = toRenderSVGInlineText(lastTextBox->textRenderer());
-
-            SVGTextLayoutAttributes* firstAttributes = 0;
-            SVGTextLayoutAttributes* lastAttributes = 0;
-            findFirstAndLastAttributesInVector(attributes, firstContext, lastContext, firstAttributes, lastAttributes);
-            swapItemsInLayoutAttributes(firstAttributes, lastAttributes, firstTextBox->start(), lastTextBox->start());
+        if (firstTextBox.len() == 1 && firstTextBox.len() == lastTextBox.len()) {
+            RenderSVGInlineText& firstContext = firstTextBox.renderer();
+            RenderSVGInlineText& lastContext = lastTextBox.renderer();
+
+            SVGTextLayoutAttributes* firstAttributes = nullptr;
+            SVGTextLayoutAttributes* lastAttributes = nullptr;
+            findFirstAndLastAttributesInVector(attributes, &firstContext, &lastContext, firstAttributes, lastAttributes);
+            swapItemsInLayoutAttributes(firstAttributes, lastAttributes, firstTextBox.start(), lastTextBox.start());
         }
 
         InlineBox* temp = *first;
@@ -307,5 +316,3 @@ void SVGRootInlineBox::reorderValueLists(Vector<SVGTextLayoutAttributes*>& attri
 }
 
 } // namespace WebCore
-
-#endif // ENABLE(SVG)