SimpleFontDataHaiku.cpp [plain text]
#include "config.h"
#include "SimpleFontData.h"
#include "FloatRect.h"
#include "FontCache.h"
#include "FontDescription.h"
#include "NotImplemented.h"
#include "TextEncoding.h"
#include <wtf/text/CString.h>
namespace WebCore {
void SimpleFontData::platformInit()
{
const BFont* font = m_platformData.font();
if (!font)
return;
font_height height;
font->GetHeight(&height);
m_fontMetrics.setAscent(height.ascent);
m_fontMetrics.setDescent(height.descent);
m_fontMetrics.setXHeight(height.ascent * 0.56f); m_fontMetrics.setLineGap(height.leading);
m_fontMetrics.setLineSpacing(lroundf(height.ascent) + lroundf(height.descent) + lroundf(height.leading));
}
void SimpleFontData::platformCharWidthInit()
{
m_avgCharWidth = 0.f;
m_maxCharWidth = 0.f;
initCharWidths();
}
void SimpleFontData::platformDestroy()
{
}
PassOwnPtr<SimpleFontData> SimpleFontData::createScaledFontData(const FontDescription& fontDescription, float scaleFactor) const
{
FontDescription desc = FontDescription(fontDescription);
desc.setSpecifiedSize(scaleFactor * fontDescription.computedSize());
FontPlatformData fontPlatformData(desc, desc.family().family());
return adoptPtr(new SimpleFontData(fontPlatformData, isCustomFont(), false));
}
SimpleFontData* SimpleFontData::smallCapsFontData(const FontDescription& fontDescription) const
{
if (!m_derivedFontData)
m_derivedFontData = DerivedFontData::create(isCustomFont());
if (!m_derivedFontData->smallCaps)
m_derivedFontData->smallCaps = createScaledFontData(fontDescription, .7);
return m_derivedFontData->smallCaps.get();
}
SimpleFontData* SimpleFontData::emphasisMarkFontData(const FontDescription& fontDescription) const
{
if (!m_derivedFontData)
m_derivedFontData = DerivedFontData::create(isCustomFont());
if (!m_derivedFontData->emphasisMark)
m_derivedFontData->emphasisMark = createScaledFontData(fontDescription, .5);
return m_derivedFontData->emphasisMark.get();
}
bool SimpleFontData::containsCharacters(const UChar* characters, int length) const
{
return true;
}
void SimpleFontData::determinePitch()
{
m_treatAsFixedPitch = m_platformData.font() && m_platformData.font()->IsFixed();
}
GlyphMetrics SimpleFontData::platformMetricsForGlyph(Glyph glyph, GlyphMetricsMode) const
{
GlyphMetrics metrics;
if (!m_platformData.font())
return metrics;
CString encoded = UTF8Encoding().encode(static_cast<UChar*>(&glyph), 1,
URLEncodedEntitiesForUnencodables);
float escapements[1];
m_platformData.font()->GetEscapements(encoded.data(), 1, escapements);
metrics.horizontalAdvance = escapements[0] * m_platformData.font()->Size();
return metrics;
}
}