#ifndef SVGGlyphMap_h
#define SVGGlyphMap_h
#if ENABLE(SVG_FONTS)
#include "SVGGlyphElement.h"
namespace WebCore {
struct GlyphMapNode;
typedef HashMap<UChar, RefPtr<GlyphMapNode> > GlyphMapLayer;
struct GlyphMapNode : public RefCounted<GlyphMapNode> {
private:
GlyphMapNode() { }
public:
static PassRefPtr<GlyphMapNode> create() { return adoptRef(new GlyphMapNode); }
Vector<SVGGlyph> glyphs;
GlyphMapLayer children;
};
class SVGGlyphMap {
public:
SVGGlyphMap() : m_currentPriority(0) { }
void add(const String& string, const SVGGlyph& glyph)
{
size_t len = string.length();
GlyphMapLayer* currentLayer = &m_rootLayer;
RefPtr<GlyphMapNode> node;
for (size_t i = 0; i < len; ++i) {
UChar curChar = string[i];
node = currentLayer->get(curChar);
if (!node) {
node = GlyphMapNode::create();
currentLayer->set(curChar, node);
}
currentLayer = &node->children;
}
if (node) {
node->glyphs.append(glyph);
node->glyphs.last().priority = m_currentPriority++;
node->glyphs.last().unicodeStringLength = len;
node->glyphs.last().isValid = true;
}
}
static inline bool compareGlyphPriority(const SVGGlyph& first, const SVGGlyph& second)
{
return first.priority < second.priority;
}
void get(const String& string, Vector<SVGGlyph>& glyphs)
{
GlyphMapLayer* currentLayer = &m_rootLayer;
for (size_t i = 0; i < string.length(); ++i) {
UChar curChar = string[i];
RefPtr<GlyphMapNode> node = currentLayer->get(curChar);
if (!node)
break;
glyphs.append(node->glyphs);
currentLayer = &node->children;
}
std::sort(glyphs.begin(), glyphs.end(), compareGlyphPriority);
}
void clear()
{
m_rootLayer.clear();
m_currentPriority = 0;
}
private:
GlyphMapLayer m_rootLayer;
int m_currentPriority;
};
}
#endif // ENABLE(SVG_FONTS)
#endif // SVGGlyphMap_h