1 files changed, 380 insertions, 0 deletions
diff --git a/Source/WebCore/rendering/InlineBox.cpp b/Source/WebCore/rendering/InlineBox.cpp
new file mode 100644
index 000000000..bc452ec8f
--- /dev/null
+++ b/Source/WebCore/rendering/InlineBox.cpp
@@ -0,0 +1,380 @@
+/*
+ * Copyright (C) 2003, 2004, 2005, 2006, 2007 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 "InlineBox.h"
+
+#include "HitTestResult.h"
+#include "InlineFlowBox.h"
+#include "PaintInfo.h"
+#include "RenderArena.h"
+#include "RenderBlock.h"
+#include "RootInlineBox.h"
+
+#ifndef NDEBUG
+#include <stdio.h>
+#endif
+
+using namespace std;
+
+namespace WebCore {
+
+#if !COMPILER(MSVC)
+// FIXME: Figure out why this doesn't work on MSVC.
+class SameSizeAsInlineBox {
+    virtual ~SameSizeAsInlineBox() { }
+    void* a[4];
+    FloatPoint b;
+    float c;
+    uint32_t d : 31;
+    bool e : 1;
+#ifndef NDEBUG
+    bool f;
+#endif
+};
+
+COMPILE_ASSERT(sizeof(InlineBox) == sizeof(SameSizeAsInlineBox), InlineBox_size_guard);
+#endif
+
+#ifndef NDEBUG
+static bool inInlineBoxDetach;
+#endif
+
+#ifndef NDEBUG
+
+InlineBox::~InlineBox()
+{
+    if (!m_hasBadParent && m_parent)
+        m_parent->setHasBadChildList();
+}
+
+#endif
+
+void InlineBox::remove()
+{ 
+    if (parent())
+        parent()->removeChild(this);
+}
+
+void InlineBox::destroy(RenderArena* renderArena)
+{
+#ifndef NDEBUG
+    inInlineBoxDetach = true;
+#endif
+    delete this;
+#ifndef NDEBUG
+    inInlineBoxDetach = false;
+#endif
+
+    // Recover the size left there for us by operator delete and free the memory.
+    renderArena->free(*(size_t *)this, this);
+}
+
+void* InlineBox::operator new(size_t sz, RenderArena* renderArena)
+{
+    return renderArena->allocate(sz);
+}
+
+void InlineBox::operator delete(void* ptr, size_t sz)
+{
+    ASSERT(inInlineBoxDetach);
+
+    // Stash size where destroy can find it.
+    *(size_t *)ptr = sz;
+}
+
+#ifndef NDEBUG
+const char* InlineBox::boxName() const
+{
+    return "InlineBox";
+}
+
+void InlineBox::showTreeForThis() const
+{
+    if (m_renderer)
+        m_renderer->showTreeForThis();
+}
+
+void InlineBox::showLineTreeForThis() const
+{
+    if (m_renderer)
+        m_renderer->containingBlock()->showLineTreeAndMark(this, "*");
+}
+
+void InlineBox::showLineTreeAndMark(const InlineBox* markedBox1, const char* markedLabel1, const InlineBox* markedBox2, const char* markedLabel2, const RenderObject* obj, int depth) const
+{
+    int printedCharacters = 0;
+    if (this == markedBox1)
+        printedCharacters += fprintf(stderr, "%s", markedLabel1);
+    if (this == markedBox2)
+        printedCharacters += fprintf(stderr, "%s", markedLabel2);
+    if (renderer() == obj)
+        printedCharacters += fprintf(stderr, "*");
+    for (; printedCharacters < depth * 2; printedCharacters++)
+        fputc(' ', stderr);
+
+    showBox(printedCharacters);
+}
+
+void InlineBox::showBox(int printedCharacters) const
+{
+    printedCharacters += fprintf(stderr, "%s\t%p", boxName(), this);
+    for (; printedCharacters < showTreeCharacterOffset; printedCharacters++)
+        fputc(' ', stderr);
+    fprintf(stderr, "\t%s %p\n", renderer() ? renderer()->renderName() : "No Renderer", renderer());
+}
+#endif
+
+float InlineBox::logicalHeight() const
+{
+    if (hasVirtualLogicalHeight())
+        return virtualLogicalHeight();
+    
+    if (renderer()->isText())
+        return m_isText ? renderer()->style(m_firstLine)->fontMetrics().height() : 0;
+    if (renderer()->isBox() && parent())
+        return isHorizontal() ? toRenderBox(m_renderer)->height() : toRenderBox(m_renderer)->width();
+
+    ASSERT(isInlineFlowBox());
+    RenderBoxModelObject* flowObject = boxModelObject();
+    const FontMetrics& fontMetrics = renderer()->style(m_firstLine)->fontMetrics();
+    float result = fontMetrics.height();
+    if (parent())
+        result += flowObject->borderAndPaddingLogicalHeight();
+    return result;
+}
+
+int InlineBox::caretMinOffset() const 
+{ 
+    return m_renderer->caretMinOffset(); 
+}
+
+int InlineBox::caretMaxOffset() const 
+{ 
+    return m_renderer->caretMaxOffset(); 
+}
+
+void InlineBox::dirtyLineBoxes()
+{
+    markDirty();
+    for (InlineFlowBox* curr = parent(); curr && !curr->isDirty(); curr = curr->parent())
+        curr->markDirty();
+}
+
+void InlineBox::deleteLine(RenderArena* arena)
+{
+    if (!m_extracted && m_renderer->isBox())
+        toRenderBox(m_renderer)->setInlineBoxWrapper(0);
+    destroy(arena);
+}
+
+void InlineBox::extractLine()
+{
+    m_extracted = true;
+    if (m_renderer->isBox())
+        toRenderBox(m_renderer)->setInlineBoxWrapper(0);
+}
+
+void InlineBox::attachLine()
+{
+    m_extracted = false;
+    if (m_renderer->isBox())
+        toRenderBox(m_renderer)->setInlineBoxWrapper(this);
+}
+
+void InlineBox::adjustPosition(float dx, float dy)
+{
+    m_topLeft.move(dx, dy);
+
+    if (m_renderer->isReplaced()) 
+        toRenderBox(m_renderer)->move(dx, dy); 
+}
+
+void InlineBox::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit /* lineTop */, LayoutUnit /*lineBottom*/)
+{
+    if (!paintInfo.shouldPaintWithinRoot(renderer()) || (paintInfo.phase != PaintPhaseForeground && paintInfo.phase != PaintPhaseSelection))
+        return;
+
+    LayoutPoint childPoint = paintOffset;
+    if (parent()->renderer()->style()->isFlippedBlocksWritingMode()) // Faster than calling containingBlock().
+        childPoint = renderer()->containingBlock()->flipForWritingModeForChild(toRenderBox(renderer()), childPoint);
+    
+    // Paint all phases of replaced elements atomically, as though the replaced element established its
+    // own stacking context.  (See Appendix E.2, section 6.4 on inline block/table elements in the CSS2.1
+    // specification.)
+    bool preservePhase = paintInfo.phase == PaintPhaseSelection || paintInfo.phase == PaintPhaseTextClip;
+    PaintInfo info(paintInfo);
+    info.phase = preservePhase ? paintInfo.phase : PaintPhaseBlockBackground;
+    renderer()->paint(info, childPoint);
+    if (!preservePhase) {
+        info.phase = PaintPhaseChildBlockBackgrounds;
+        renderer()->paint(info, childPoint);
+        info.phase = PaintPhaseFloat;
+        renderer()->paint(info, childPoint);
+        info.phase = PaintPhaseForeground;
+        renderer()->paint(info, childPoint);
+        info.phase = PaintPhaseOutline;
+        renderer()->paint(info, childPoint);
+    }
+}
+
+bool InlineBox::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const LayoutPoint& pointInContainer, const LayoutPoint& accumulatedOffset, LayoutUnit /* lineTop */, LayoutUnit /*lineBottom*/)
+{
+    // Hit test all phases of replaced elements atomically, as though the replaced element established its
+    // own stacking context.  (See Appendix E.2, section 6.4 on inline block/table elements in the CSS2.1
+    // specification.)
+    return renderer()->hitTest(request, result, pointInContainer, accumulatedOffset);
+}
+
+const RootInlineBox* InlineBox::root() const
+{ 
+    if (m_parent)
+        return m_parent->root(); 
+    ASSERT(isRootInlineBox());
+    return static_cast<const RootInlineBox*>(this);
+}
+
+RootInlineBox* InlineBox::root()
+{ 
+    if (m_parent)
+        return m_parent->root(); 
+    ASSERT(isRootInlineBox());
+    return static_cast<RootInlineBox*>(this);
+}
+
+bool InlineBox::nextOnLineExists() const
+{
+    if (!m_determinedIfNextOnLineExists) {
+        m_determinedIfNextOnLineExists = true;
+
+        if (!parent())
+            m_nextOnLineExists = false;
+        else if (nextOnLine())
+            m_nextOnLineExists = true;
+        else
+            m_nextOnLineExists = parent()->nextOnLineExists();
+    }
+    return m_nextOnLineExists;
+}
+
+InlineBox* InlineBox::nextLeafChild() const
+{
+    InlineBox* leaf = 0;
+    for (InlineBox* box = nextOnLine(); box && !leaf; box = box->nextOnLine())
+        leaf = box->isLeaf() ? box : toInlineFlowBox(box)->firstLeafChild();
+    if (!leaf && parent())
+        leaf = parent()->nextLeafChild();
+    return leaf;
+}
+    
+InlineBox* InlineBox::prevLeafChild() const
+{
+    InlineBox* leaf = 0;
+    for (InlineBox* box = prevOnLine(); box && !leaf; box = box->prevOnLine())
+        leaf = box->isLeaf() ? box : toInlineFlowBox(box)->lastLeafChild();
+    if (!leaf && parent())
+        leaf = parent()->prevLeafChild();
+    return leaf;
+}
+    
+RenderObject::SelectionState InlineBox::selectionState()
+{
+    return renderer()->selectionState();
+}
+
+bool InlineBox::canAccommodateEllipsis(bool ltr, int blockEdge, int ellipsisWidth)
+{
+    // Non-replaced elements can always accommodate an ellipsis.
+    if (!m_renderer || !m_renderer->isReplaced())
+        return true;
+    
+    IntRect boxRect(left(), 0, m_logicalWidth, 10);
+    IntRect ellipsisRect(ltr ? blockEdge - ellipsisWidth : blockEdge, 0, ellipsisWidth, 10);
+    return !(boxRect.intersects(ellipsisRect));
+}
+
+float InlineBox::placeEllipsisBox(bool, float, float, float, bool&)
+{
+    // Use -1 to mean "we didn't set the position."
+    return -1;
+}
+
+void InlineBox::clearKnownToHaveNoOverflow()
+{ 
+    m_knownToHaveNoOverflow = false;
+    if (parent() && parent()->knownToHaveNoOverflow())
+        parent()->clearKnownToHaveNoOverflow();
+}
+
+FloatPoint InlineBox::locationIncludingFlipping()
+{
+    if (!renderer()->style()->isFlippedBlocksWritingMode())
+        return FloatPoint(x(), y());
+    RenderBlock* block = root()->block();
+    if (block->style()->isHorizontalWritingMode())
+        return FloatPoint(x(), block->height() - height() - y());
+    else
+        return FloatPoint(block->width() - width() - x(), y());
+}
+
+void InlineBox::flipForWritingMode(FloatRect& rect)
+{
+    if (!renderer()->style()->isFlippedBlocksWritingMode())
+        return;
+    root()->block()->flipForWritingMode(rect);
+}
+
+FloatPoint InlineBox::flipForWritingMode(const FloatPoint& point)
+{
+    if (!renderer()->style()->isFlippedBlocksWritingMode())
+        return point;
+    return root()->block()->flipForWritingMode(point);
+}
+
+void InlineBox::flipForWritingMode(IntRect& rect)
+{
+    if (!renderer()->style()->isFlippedBlocksWritingMode())
+        return;
+    root()->block()->flipForWritingMode(rect);
+}
+
+IntPoint InlineBox::flipForWritingMode(const IntPoint& point)
+{
+    if (!renderer()->style()->isFlippedBlocksWritingMode())
+        return point;
+    return root()->block()->flipForWritingMode(point);
+}
+
+} // namespace WebCore
+
+#ifndef NDEBUG
+
+void showTree(const WebCore::InlineBox* b)
+{
+    if (b)
+        b->showTreeForThis();
+}
+
+void showLineTree(const WebCore::InlineBox* b)
+{
+    if (b)
+        b->showLineTreeForThis();
+}
+
+#endif