SimpleFontDataCGWin.cpp [plain text]
#include "config.h"
#include "SimpleFontData.h"
#include <winsock2.h>
#include "Font.h"
#include "FontCache.h"
#include "FloatRect.h"
#include "FontDescription.h"
#include "PlatformString.h"
#include <wtf/MathExtras.h>
#include <wtf/RetainPtr.h>
#include <unicode/uchar.h>
#include <unicode/unorm.h>
#include <ApplicationServices/ApplicationServices.h>
#include <WebKitSystemInterface/WebKitSystemInterface.h>
#include <mlang.h>
#include <tchar.h>
namespace WebCore {
using std::max;
static inline float scaleEmToUnits(float x, unsigned unitsPerEm) { return unitsPerEm ? x / static_cast<float>(unitsPerEm) : x; }
void SimpleFontData::platformInit()
{
m_syntheticBoldOffset = m_platformData.syntheticBold() ? 1.0f : 0.f;
m_scriptCache = 0;
m_scriptFontProperties = 0;
m_isSystemFont = false;
if (m_platformData.useGDI())
return initGDIFont();
CGFontRef font = m_platformData.cgFont();
int iAscent = CGFontGetAscent(font);
int iDescent = CGFontGetDescent(font);
int iLineGap = CGFontGetLeading(font);
m_unitsPerEm = CGFontGetUnitsPerEm(font);
float pointSize = m_platformData.size();
float fAscent = scaleEmToUnits(iAscent, m_unitsPerEm) * pointSize;
float fDescent = -scaleEmToUnits(iDescent, m_unitsPerEm) * pointSize;
float fLineGap = scaleEmToUnits(iLineGap, m_unitsPerEm) * pointSize;
if (!isCustomFont()) {
HDC dc = GetDC(0);
HGDIOBJ oldFont = SelectObject(dc, m_platformData.hfont());
int faceLength = GetTextFace(dc, 0, 0);
Vector<TCHAR> faceName(faceLength);
GetTextFace(dc, faceLength, faceName.data());
m_isSystemFont = !_tcscmp(faceName.data(), _T("Lucida Grande"));
SelectObject(dc, oldFont);
ReleaseDC(0, dc);
if (shouldApplyMacAscentHack()) {
if (!_tcscmp(faceName.data(), _T("Times")) || !_tcscmp(faceName.data(), _T("Helvetica")) || !_tcscmp(faceName.data(), _T("Courier")))
fAscent += floorf(((fAscent + fDescent) * 0.15f) + 0.5f);
}
}
m_ascent = lroundf(fAscent);
m_descent = lroundf(fDescent);
m_lineGap = lroundf(fLineGap);
m_lineSpacing = m_ascent + m_descent + m_lineGap;
GlyphPage* glyphPageZero = GlyphPageTreeNode::getRootChild(this, 0)->page();
Glyph xGlyph = glyphPageZero ? glyphPageZero->glyphDataForCharacter('x').glyph : 0;
if (xGlyph) {
CGRect xBox;
CGFontGetGlyphBBoxes(font, &xGlyph, 1, &xBox);
m_xHeight = scaleEmToUnits(max(CGRectGetMaxX(xBox), CGRectGetMaxY(xBox)), m_unitsPerEm) * pointSize;
} else {
int iXHeight = CGFontGetXHeight(font);
m_xHeight = scaleEmToUnits(iXHeight, m_unitsPerEm) * pointSize;
}
}
float SimpleFontData::platformWidthForGlyph(Glyph glyph) const
{
if (m_platformData.useGDI())
return widthForGDIGlyph(glyph);
CGFontRef font = m_platformData.cgFont();
float pointSize = m_platformData.size();
CGSize advance;
CGAffineTransform m = CGAffineTransformMakeScale(pointSize, pointSize);
bool isPrinterFont = false;
wkGetGlyphAdvances(font, m, m_isSystemFont, isPrinterFont, glyph, advance);
return advance.width + m_syntheticBoldOffset;
}
}