bool
FontCacheEntry::Init(const ServerFont& font)
{
if (fGlyphCache == NULL)
return false;
glyph_rendering renderingType = _RenderTypeFor(font);
// TODO: encoding from font
FT_Encoding charMap = FT_ENCODING_NONE;
bool hinting = font.Hinting();
if (!fEngine.Init(font.Path(), 0, font.Size(), charMap,
renderingType, hinting)) {
fprintf(stderr, "FontCacheEntry::Init() - some error loading font "
"file %s\n", font.Path());
return false;
}
if (fGlyphCache->Init() != B_OK) {
fprintf(stderr, "FontCacheEntry::Init() - failed to allocate "
"GlyphCache table for font file %s\n", font.Path());
return false;
}
return true;
}
/*static*/ void
FontCacheEntry::GenerateSignature(char* signature, size_t signatureSize,
const ServerFont& font)
{
glyph_rendering renderingType = _RenderTypeFor(font);
// TODO: read more of these from the font
FT_Encoding charMap = FT_ENCODING_NONE;
bool hinting = font.Hinting();
uint8 averageWeight = gSubpixelAverageWeight;
snprintf(signature, signatureSize, "%ld,%u,%d,%d,%.1f,%d,%d",
font.GetFamilyAndStyle(), charMap,
font.Face(), int(renderingType), font.Size(), hinting, averageWeight);
}
/*static*/ glyph_rendering
FontCacheEntry::_RenderTypeFor(const ServerFont& font)
{
glyph_rendering renderingType = gSubpixelAntialiasing ?
glyph_ren_subpix : glyph_ren_native_gray8;
if (font.Rotation() != 0.0 || font.Shear() != 90.0
|| font.FalseBoldWidth() != 0.0
|| font.Flags() & B_DISABLE_ANTIALIASING
|| font.Size() > 30
|| !font.Hinting()) {
renderingType = glyph_ren_outline;
}
return renderingType;
}