1 files changed, 321 insertions, 0 deletions
diff --git a/Source/WebCore/rendering/InlineBox.cpp b/Source/WebCore/rendering/InlineBox.cpp
new file mode 100644
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--- /dev/null
+++ b/Source/WebCore/rendering/InlineBox.cpp
@@ -0,0 +1,321 @@
+/*
+ * 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 "RenderArena.h"
+#include "RenderBlock.h"
+#include "RootInlineBox.h"
+
+using namespace std;
+
+namespace WebCore {
+    
+#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) throw()
+{
+    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
+void InlineBox::showTreeForThis() const
+{
+    if (m_renderer)
+        m_renderer->showTreeForThis();
+}
+#endif
+
+int InlineBox::logicalHeight() const
+{
+#if ENABLE(SVG)
+    if (hasVirtualLogicalHeight())
+        return virtualLogicalHeight();
+#endif
+    
+    if (renderer()->isText())
+        return m_isText ? renderer()->style(m_firstLine)->font().height() : 0;
+    if (renderer()->isBox() && parent())
+        return isHorizontal() ? toRenderBox(m_renderer)->height() : toRenderBox(m_renderer)->width();
+
+    ASSERT(isInlineFlowBox());
+    RenderBoxModelObject* flowObject = boxModelObject();
+    const Font& font = renderer()->style(m_firstLine)->font();
+    int result = font.height();
+    if (parent())
+        result += flowObject->borderAndPaddingLogicalHeight();
+    return result;
+}
+
+int InlineBox::caretMinOffset() const 
+{ 
+    return m_renderer->caretMinOffset(); 
+}
+
+int InlineBox::caretMaxOffset() const 
+{ 
+    return m_renderer->caretMaxOffset(); 
+}
+
+unsigned InlineBox::caretMaxRenderedOffset() const 
+{ 
+    return 1; 
+}
+
+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(int dx, int dy)
+{
+    m_x += dx;
+    m_y += dy;
+    if (m_renderer->isReplaced()) {
+        RenderBox* box = toRenderBox(m_renderer);
+        box->move(dx, dy);
+    }
+}
+
+void InlineBox::paint(PaintInfo& paintInfo, int tx, int ty)
+{
+    if (!paintInfo.shouldPaintWithinRoot(renderer()) || (paintInfo.phase != PaintPhaseForeground && paintInfo.phase != PaintPhaseSelection))
+        return;
+
+    IntPoint childPoint = IntPoint(tx, ty);
+    if (parent()->renderer()->style()->isFlippedBlocksWritingMode()) // Faster than calling containingBlock().
+        childPoint = renderer()->containingBlock()->flipForWritingMode(toRenderBox(renderer()), childPoint, RenderBox::ParentToChildFlippingAdjustment);
+    
+    // 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.x(), childPoint.y());
+    if (!preservePhase) {
+        info.phase = PaintPhaseChildBlockBackgrounds;
+        renderer()->paint(info, childPoint.x(), childPoint.y());
+        info.phase = PaintPhaseFloat;
+        renderer()->paint(info, childPoint.x(), childPoint.y());
+        info.phase = PaintPhaseForeground;
+        renderer()->paint(info, childPoint.x(), childPoint.y());
+        info.phase = PaintPhaseOutline;
+        renderer()->paint(info, childPoint.x(), childPoint.y());
+    }
+}
+
+bool InlineBox::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, int x, int y, int tx, int ty)
+{
+    // 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, IntPoint(x, y), tx, ty);
+}
+
+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;
+}
+
+bool InlineBox::prevOnLineExists() const
+{
+    if (!m_determinedIfPrevOnLineExists) {
+        m_determinedIfPrevOnLineExists = true;
+        
+        if (!parent())
+            m_prevOnLineExists = false;
+        else if (prevOnLine())
+            m_prevOnLineExists = true;
+        else
+            m_prevOnLineExists = parent()->prevOnLineExists();
+    }
+    return m_prevOnLineExists;
+}
+
+InlineBox* InlineBox::nextLeafChild() const
+{
+    InlineBox* leaf = 0;
+    for (InlineBox* box = nextOnLine(); box && !leaf; box = box->nextOnLine())
+        leaf = box->isLeaf() ? box : static_cast<InlineFlowBox*>(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 : static_cast<InlineFlowBox*>(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(m_x, 0, m_logicalWidth, 10);
+    IntRect ellipsisRect(ltr ? blockEdge - ellipsisWidth : blockEdge, 0, ellipsisWidth, 10);
+    return !(boxRect.intersects(ellipsisRect));
+}
+
+int InlineBox::placeEllipsisBox(bool, int, int, int, bool&)
+{
+    // Use -1 to mean "we didn't set the position."
+    return -1;
+}
+
+IntPoint InlineBox::locationIncludingFlipping()
+{
+    if (!renderer()->style()->isFlippedBlocksWritingMode())
+        return IntPoint(x(), y());
+    RenderBlock* block = root()->block();
+    if (block->style()->isHorizontalWritingMode())
+        return IntPoint(x(), block->height() - height() - y());
+    else
+        return IntPoint(block->width() - width() - x(), y());
+}
+
+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();
+}
+
+#endif