WFontMetrics WRasterImage::fontMetrics()
{
struct SkPaint::FontMetrics metrics;
impl_->textPaint_.getFontMetrics(&metrics);
// assumed all are to be positive - ascent of skia is negative
double ascent = -SkScalarToFloat(metrics.fAscent);
double descent = SkScalarToFloat(metrics.fDescent);
double leading = SkScalarToFloat(metrics.fLeading);
return WFontMetrics(painter_->font(), leading, ascent, descent);
}
WFontMetrics WPdfImage::fontMetrics()
{
HPDF_Box bbox = HPDF_Font_GetBBox(font_);
int ascent = HPDF_Font_GetAscent(font_);
int descent = -HPDF_Font_GetDescent(font_);
if (ascent == 0 && descent == 0) {
ascent = bbox.top;
descent = -bbox.bottom;
}
int leading = bbox.top - ascent;
return WFontMetrics(painter()->font(),
fontSize_ * leading / 1000.0,
fontSize_ * ascent / 1000.0,
fontSize_ * descent / 1000.0);
}
