1 files changed, 221 insertions, 0 deletions
diff --git a/WebCore/rendering/svg/SVGRootInlineBox.cpp b/WebCore/rendering/svg/SVGRootInlineBox.cpp
new file mode 100644
index 0000000..7109e1f
--- /dev/null
+++ b/WebCore/rendering/svg/SVGRootInlineBox.cpp
@@ -0,0 +1,221 @@
+/*
+ * Copyright (C) 2006 Oliver Hunt <ojh16@student.canterbury.ac.nz>
+ * Copyright (C) 2006 Apple Computer Inc.
+ * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
+ * Copyright (C) Research In Motion Limited 2010. 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 "SVGRootInlineBox.h"
+
+#if ENABLE(SVG)
+#include "GraphicsContext.h"
+#include "RenderBlock.h"
+#include "RenderSVGInlineText.h"
+#include "SVGInlineFlowBox.h"
+#include "SVGInlineTextBox.h"
+#include "SVGRenderSupport.h"
+#include "SVGTextPositioningElement.h"
+
+namespace WebCore {
+
+void SVGRootInlineBox::paint(PaintInfo& paintInfo, int, int)
+{
+    ASSERT(paintInfo.phase == PaintPhaseForeground || paintInfo.phase == PaintPhaseSelection);
+    ASSERT(!paintInfo.context->paintingDisabled());
+
+    RenderObject* boxRenderer = renderer();
+    ASSERT(boxRenderer);
+
+    bool isPrinting = renderer()->document()->printing();
+    bool hasSelection = !isPrinting && selectionState() != RenderObject::SelectionNone;
+
+    PaintInfo childPaintInfo(paintInfo);
+    if (hasSelection) {
+        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);
+        }
+    }
+
+    childPaintInfo.context->save();
+
+    if (SVGRenderSupport::prepareToRenderSVGContent(boxRenderer, childPaintInfo)) {
+        for (InlineBox* child = firstChild(); child; child = child->nextOnLine()) {
+            if (child->isSVGInlineTextBox())
+                SVGInlineFlowBox::computeTextMatchMarkerRectForRenderer(toRenderSVGInlineText(static_cast<SVGInlineTextBox*>(child)->textRenderer()));
+
+            child->paint(childPaintInfo, 0, 0);
+        }
+    }
+
+    SVGRenderSupport::finishRenderSVGContent(boxRenderer, childPaintInfo, paintInfo.context);
+    childPaintInfo.context->restore();
+}
+
+void SVGRootInlineBox::computePerCharacterLayoutInformation()
+{
+    // Perform SVG text layout phase two (see SVGTextLayoutEngine for details).
+    SVGTextLayoutEngine characterLayout;
+    layoutCharactersInTextBoxes(this, characterLayout);
+
+    // Perform SVG text layout phase three (see SVGTextChunkBuilder for details).
+    characterLayout.finishLayout();
+
+    // Perform SVG text layout phase four
+    // Position & resize all SVGInlineText/FlowBoxes in the inline box tree, resize the root box as well as the RenderSVGText parent block.
+    layoutChildBoxes(this);
+    layoutRootBox();
+}
+
+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);
+        } else {
+            ASSERT(child->isInlineFlowBox());
+
+            // Skip generated content.
+            Node* node = child->renderer()->node();
+            if (!node)
+                continue;
+
+            SVGInlineFlowBox* flowBox = static_cast<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;
+                layoutCharactersInTextBoxes(flowBox, lineLayout);
+                characterLayout.beginTextPathLayout(child->renderer(), lineLayout);
+            }
+
+            layoutCharactersInTextBoxes(flowBox, characterLayout);
+
+            if (isTextPath)
+                characterLayout.endTextPathLayout();
+        }
+    }
+}
+
+void SVGRootInlineBox::layoutChildBoxes(InlineFlowBox* start)
+{
+    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);
+            IntRect boxRect = textBox->calculateBoundaries();
+            textBox->setX(boxRect.x());
+            textBox->setY(boxRect.y());
+            textBox->setLogicalWidth(boxRect.width());
+            textBox->setLogicalHeight(boxRect.height());
+        } else {
+            ASSERT(child->isInlineFlowBox());
+
+            // Skip generated content.
+            if (!child->renderer()->node())
+                continue;
+
+            SVGInlineFlowBox* flowBox = static_cast<SVGInlineFlowBox*>(child);
+            layoutChildBoxes(flowBox);
+
+            IntRect boxRect = flowBox->calculateBoundaries();
+            flowBox->setX(boxRect.x());
+            flowBox->setY(boxRect.y());
+            flowBox->setLogicalWidth(boxRect.width());
+            flowBox->setLogicalHeight(boxRect.height());
+        }
+    }
+}
+
+void SVGRootInlineBox::layoutRootBox()
+{
+    RenderBlock* parentBlock = block();
+    ASSERT(parentBlock);
+
+    IntRect childRect;
+    for (InlineBox* child = firstChild(); child; child = child->nextOnLine()) {
+        // Skip generated content.
+        if (!child->renderer()->node())
+            continue;
+        childRect.unite(child->calculateBoundaries());
+    }
+
+    int xBlock = childRect.x();
+    int yBlock = childRect.y();
+    int widthBlock = childRect.width();
+    int heightBlock = childRect.height();
+
+    // Finally, assign the root block position, now that all content is laid out.
+    parentBlock->setLocation(xBlock, yBlock);
+    parentBlock->setWidth(widthBlock);
+    parentBlock->setHeight(heightBlock);
+
+    // Position all children relative to the parent block.
+    for (InlineBox* child = firstChild(); child; child = child->nextOnLine()) {
+        // Skip generated content.
+        if (!child->renderer()->node())
+            continue;
+        child->adjustPosition(-xBlock, -yBlock);
+    }
+
+    // Position ourselves.
+    setX(0);
+    setY(0);
+    setLogicalWidth(widthBlock);
+    setLogicalHeight(heightBlock);
+    setBlockLogicalHeight(heightBlock);
+    setLineTopBottomPositions(0, heightBlock);
+}
+
+InlineBox* SVGRootInlineBox::closestLeafChildForPosition(const IntPoint& point)
+{
+    InlineBox* firstLeaf = firstLeafChild();
+    InlineBox* lastLeaf = lastLeafChild();
+    if (firstLeaf == lastLeaf)
+        return firstLeaf;
+
+    // FIXME: Check for vertical text!
+    InlineBox* closestLeaf = 0;
+    for (InlineBox* leaf = firstLeaf; leaf; leaf = leaf->nextLeafChild()) {
+        if (point.y() < leaf->m_y)
+            continue;
+        if (point.y() > leaf->m_y + leaf->virtualLogicalHeight())
+            continue;
+
+        closestLeaf = leaf;
+        if (point.x() < leaf->m_x + leaf->m_logicalWidth)
+            return leaf;
+    }
+
+    return closestLeaf ? closestLeaf : lastLeaf;
+}
+
+} // namespace WebCore
+
+#endif // ENABLE(SVG)