Merge WebKit at r75993: Initial merge by git.

Change-Id: I602bbdc3974787a3b0450456a30a7868286921c3

1 files changed, 147 insertions, 0 deletions

diff --git a/Source/WebCore/rendering/mathml/RenderMathMLFenced.cpp b/Source/WebCore/rendering/mathml/RenderMathMLFenced.cpp
new file mode 100644
index 0000000..f7bbf71
--- /dev/null
+++ b/Source/WebCore/rendering/mathml/RenderMathMLFenced.cpp
@@ -0,0 +1,147 @@
+/*
+ * Copyright (C) 2009 Alex Milowski (alex@milowski.com). All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+
+#if ENABLE(MATHML)
+
+#include "RenderMathMLFenced.h"
+
+#include "FontSelector.h"
+#include "MathMLNames.h"
+#include "RenderInline.h"
+#include "RenderMathMLOperator.h"
+#include "RenderText.h"
+
+namespace WebCore {
+    
+using namespace MathMLNames;
+    
+enum Braces { OpeningBraceChar = 0x28, ClosingBraceChar = 0x29 };
+    
+static const float gOperatorPadding = 0.1f;
+
+RenderMathMLFenced::RenderMathMLFenced(Node* fenced) 
+    : RenderMathMLRow(fenced)
+    , m_open(OpeningBraceChar)
+    , m_close(ClosingBraceChar)
+{
+}
+
+void RenderMathMLFenced::updateFromElement()
+{
+    Element* fenced = static_cast<Element*>(node());
+ 
+    // FIXME: Handle open/close values with more than one character (they should be treated like text).
+    AtomicString openValue = fenced->getAttribute(MathMLNames::openAttr);
+    if (openValue.length() > 0)
+        m_open = openValue[0];
+    AtomicString closeValue = fenced->getAttribute(MathMLNames::closeAttr);
+    if (closeValue.length() > 0)
+        m_close = closeValue[0];
+    
+    AtomicString separators = static_cast<Element*>(fenced)->getAttribute(MathMLNames::separatorsAttr);
+    if (!separators.isNull()) {
+        Vector<UChar> characters;
+        for (unsigned int i = 0; i < separators.length(); i++) {
+            if (!isSpaceOrNewline(separators[i]))
+                characters.append(separators[i]);
+        }
+        m_separators = !characters.size() ? 0 : StringImpl::create(characters.data() , characters.size());
+    } else {
+        // The separator defaults to a single comma.
+        m_separators = StringImpl::create(",");
+    }
+    
+    if (isEmpty())
+        makeFences();
+}
+
+RefPtr<RenderStyle> RenderMathMLFenced::makeOperatorStyle() 
+{
+    RefPtr<RenderStyle> newStyle = RenderStyle::create();
+    newStyle->inheritFrom(style());
+    newStyle->setDisplay(INLINE_BLOCK);
+    newStyle->setPaddingRight(Length(static_cast<int>(gOperatorPadding * style()->fontSize()), Fixed));
+    return newStyle;
+}
+
+void RenderMathMLFenced::makeFences()
+{
+    RenderObject* openFence = new (renderArena()) RenderMathMLOperator(node(), m_open);
+    openFence->setStyle(makeOperatorStyle().release());
+    RenderBlock::addChild(openFence, firstChild());
+    RenderObject* closeFence = new (renderArena()) RenderMathMLOperator(node(), m_close);
+    closeFence->setStyle(makeOperatorStyle().release());
+    RenderBlock::addChild(closeFence);
+}
+
+void RenderMathMLFenced::addChild(RenderObject* child, RenderObject*)
+{
+    // make the fences if the render object is empty
+    if (isEmpty())
+        updateFromElement();
+    
+    if (m_separators.get()) {
+        unsigned int count = 0;
+        for (Node* position = child->node(); position; position = position->previousSibling()) {
+            if (position->nodeType() == Node::ELEMENT_NODE)
+                count++;
+        }
+                
+        if (count > 1) {
+            UChar separator;
+            
+            // Use the last separator if we've run out of specified separators.
+            if ((count - 1) >= m_separators.get()->length())
+                separator = (*m_separators.get())[m_separators.get()->length() - 1];
+            else
+                separator = (*m_separators.get())[count - 1];
+                
+            RenderObject* separatorObj = new (renderArena()) RenderMathMLOperator(node(), separator);
+            separatorObj->setStyle(makeOperatorStyle().release());
+            RenderBlock::addChild(separatorObj, lastChild());
+        }
+    }
+    
+    // If we have a block, we'll wrap it in an inline-block.
+    if (child->isBlockFlow() && child->style()->display() != INLINE_BLOCK) {
+        // Block objects wrapper.
+
+        RenderBlock* block = new (renderArena()) RenderBlock(node());
+        RefPtr<RenderStyle> newStyle = RenderStyle::create();
+        newStyle->inheritFrom(style());
+        newStyle->setDisplay(INLINE_BLOCK);
+        block->setStyle(newStyle.release());
+        
+        RenderBlock::addChild(block, lastChild());
+        block->addChild(child);    
+    } else
+        RenderBlock::addChild(child, lastChild());
+}
+
+}    
+
+#endif