TextBoxView() {
#if defined(SK_BUILD_FOR_WIN) && defined(SK_FONTHOST_WIN_GDI)
LOGFONT lf;
sk_bzero(&lf, sizeof(lf));
lf.lfHeight = 9;
SkTypeface* tf0 = SkCreateTypefaceFromLOGFONT(lf);
lf.lfHeight = 12;
SkTypeface* tf1 = SkCreateTypefaceFromLOGFONT(lf);
// we assert that different sizes should not affect which face we get
SkASSERT(tf0 == tf1);
tf0->unref();
tf1->unref();
#endif
}
SkTypeface* ScaledFontWin::GetSkTypeface()
{
if (!mTypeface) {
mTypeface = SkCreateTypefaceFromLOGFONT(mLogFont);
}
return mTypeface;
}
SkTypeface* CreateTypefaceFromHFont(HFONT hfont, int* size, int* lfQuality)
{
LOGFONT info;
GetObject(hfont, sizeof(info), &info);
if (size) {
int height = info.lfHeight;
if (height < 0)
height = -height;
*size = height;
}
if (lfQuality)
*lfQuality = info.lfQuality;
return SkCreateTypefaceFromLOGFONT(info);
}
PassRefPtr<SkTypeface> CreateTypefaceFromHFont(HFONT hfont, int* size, int* paintTextFlags)
{
LOGFONT info;
GetObject(hfont, sizeof(info), &info);
if (size) {
int height = info.lfHeight;
if (height < 0)
height = -height;
*size = height;
}
if (paintTextFlags)
*paintTextFlags = computePaintTextFlags(info);
return adoptRef(SkCreateTypefaceFromLOGFONT(info));
}
static void setupPaintForFont(HFONT hfont, SkPaint* paint, PlatformContextSkia* pcs)
{
// FIXME:
// Much of this logic could also happen in
// FontCustomPlatformData::fontPlatformData and be cached,
// allowing us to avoid talking to GDI at this point.
//
LOGFONT info;
GetObject(hfont, sizeof(info), &info);
int size = info.lfHeight;
if (size < 0)
size = -size; // We don't let GDI dpi-scale us (see SkFontHost_win.cpp).
paint->setTextSize(SkIntToScalar(size));
SkTypeface* face = SkCreateTypefaceFromLOGFONT(info);
paint->setTypeface(face);
SkSafeUnref(face);
// turn lfQuality into text flags
uint32_t textFlags;
switch (info.lfQuality) {
case NONANTIALIASED_QUALITY:
textFlags = 0;
break;
case ANTIALIASED_QUALITY:
textFlags = SkPaint::kAntiAlias_Flag;
break;
case CLEARTYPE_QUALITY:
textFlags = (SkPaint::kAntiAlias_Flag | SkPaint::kLCDRenderText_Flag);
break;
default:
textFlags = getDefaultGDITextFlags();
break;
}
// only allow features that SystemParametersInfo allows
textFlags &= getDefaultGDITextFlags();
// do this check after our switch on lfQuality
if (disableTextLCD(pcs))
textFlags &= ~SkPaint::kLCDRenderText_Flag;
// now copy in just the text flags
uint32_t flags = paint->getFlags();
flags &= ~(SkPaint::kAntiAlias_Flag | SkPaint::kLCDRenderText_Flag);
flags |= textFlags;
paint->setFlags(flags);
}
static void setupPaintForFont(HFONT hfont, SkPaint* paint, PlatformContextSkia* pcs)
{
// FIXME:
// Much of this logic could also happen in
// FontCustomPlatformData::fontPlatformData and be cached,
// allowing us to avoid talking to GDI at this point.
//
LOGFONT info;
GetObject(hfont, sizeof(info), &info);
int size = info.lfHeight;
if (size < 0)
size = -size; // We don't let GDI dpi-scale us (see SkFontHost_win.cpp).
paint->setTextSize(SkIntToScalar(size));
SkTypeface* face = SkCreateTypefaceFromLOGFONT(info);
paint->setTypeface(face);
SkSafeUnref(face);
uint32_t flags = paint->getFlags();
// clear our flags initially, and then selectively set them
// based on the LOGFONT quality
flags &= SkPaint::kAntiAlias_Flag;
flags &= SkPaint::kLCDRenderText_Flag;
switch (info.lfQuality) {
case NONANTIALIASED_QUALITY:
break;
case ANTIALIASED_QUALITY:
flags |= SkPaint::kAntiAlias_Flag;
break;
case CLEARTYPE_QUALITY:
flags |= SkPaint::kAntiAlias_Flag;
flags |= SkPaint::kLCDRenderText_Flag;
break;
default:
flags |= getDefaultGDITextFlags();
break;
}
// do this check after our switch on lfQuality
if (disableTextLCD(pcs))
flags &= ~SkPaint::kLCDRenderText_Flag;
paint->setFlags(flags);
}
