void createKerningPairs (HDC dc, const float height)
{
HeapBlock<KERNINGPAIR> rawKerning;
const DWORD numKPs = GetKerningPairs (dc, 0, 0);
rawKerning.calloc (numKPs);
GetKerningPairs (dc, numKPs, rawKerning);
kerningPairs.ensureStorageAllocated ((int) numKPs);
for (DWORD i = 0; i < numKPs; ++i)
{
KerningPair kp;
kp.glyph1 = getGlyphForChar (dc, rawKerning[i].wFirst);
kp.glyph2 = getGlyphForChar (dc, rawKerning[i].wSecond);
const int standardWidth = getGlyphWidth (dc, kp.glyph1);
kp.kerning = (standardWidth + rawKerning[i].iKernAmount) / height;
kerningPairs.add (kp);
kp.glyph2 = -1; // add another entry for the standard width version..
kp.kerning = standardWidth / height;
kerningPairs.add (kp);
}
}
WindowsTypeface (const Font& font)
: Typeface (font.getTypefaceFamily(), font.getTypefaceStyle()),
fontH (0),
previousFontH (0),
dc (CreateCompatibleDC (0)),
ascent (1.0f),
defaultGlyph (-1)
{
loadFont();
if (GetTextMetrics (dc, &tm))
{
ascent = tm.tmAscent / (float) tm.tmHeight;
defaultGlyph = getGlyphForChar (dc, tm.tmDefaultChar);
createKerningPairs (dc, (float) tm.tmHeight);
}
}
WindowsTypeface (const Font& font)
: Typeface (font.getTypefaceName(),
font.getTypefaceStyle()),
fontH (0),
previousFontH (0),
dc (CreateCompatibleDC (0)),
ascent (1.0f), heightToPointsFactor (1.0f),
defaultGlyph (-1)
{
loadFont();
if (GetTextMetrics (dc, &tm))
{
heightToPointsFactor = (72.0f / GetDeviceCaps (dc, LOGPIXELSY)) * heightInPoints / (float) tm.tmHeight;
ascent = tm.tmAscent / (float) tm.tmHeight;
defaultGlyph = getGlyphForChar (dc, tm.tmDefaultChar);
createKerningPairs (dc, (float) tm.tmHeight);
}
}