// returns true and set color if the bitmap can be drawn as a single color
// (for efficiency)
static bool can_use_color_shader(const SkBitmap& bm, SkColor* color) {
#ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK
// HWUI does not support color shaders (see b/22390304)
return false;
#endif
if (1 != bm.width() || 1 != bm.height()) {
return false;
}
SkAutoLockPixels alp(bm);
if (!bm.readyToDraw()) {
return false;
}
switch (bm.colorType()) {
case kN32_SkColorType:
*color = SkUnPreMultiply::PMColorToColor(*bm.getAddr32(0, 0));
return true;
case kRGB_565_SkColorType:
*color = SkPixel16ToColor(*bm.getAddr16(0, 0));
return true;
case kIndex_8_SkColorType:
*color = SkUnPreMultiply::PMColorToColor(bm.getIndex8Color(0, 0));
return true;
default: // just skip the other configs for now
break;
}
return false;
}
// returns true and set color if the bitmap can be drawn as a single color
// (for efficiency)
static bool canUseColorShader(const SkBitmap& bm, SkColor* color) {
if (1 != bm.width() || 1 != bm.height()) {
return false;
}
SkAutoLockPixels alp(bm);
if (!bm.readyToDraw()) {
return false;
}
switch (bm.config()) {
case SkBitmap::kARGB_8888_Config:
*color = SkUnPreMultiply::PMColorToColor(*bm.getAddr32(0, 0));
return true;
case SkBitmap::kRGB_565_Config:
*color = SkPixel16ToColor(*bm.getAddr16(0, 0));
return true;
case SkBitmap::kIndex8_Config:
*color = SkUnPreMultiply::PMColorToColor(bm.getIndex8Color(0, 0));
return true;
default: // just skip the other configs for now
break;
}
return false;
}
// returns true and set color if the bitmap can be drawn as a single color
// (for efficiency)
static bool can_use_color_shader(const SkImage* image, SkColor* color) {
#ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK
// HWUI does not support color shaders (see b/22390304)
return false;
#endif
if (1 != image->width() || 1 != image->height()) {
return false;
}
SkPixmap pmap;
if (!image->peekPixels(&pmap)) {
return false;
}
switch (pmap.colorType()) {
case kN32_SkColorType:
*color = SkUnPreMultiply::PMColorToColor(*pmap.addr32(0, 0));
return true;
case kRGB_565_SkColorType:
*color = SkPixel16ToColor(*pmap.addr16(0, 0));
return true;
case kIndex_8_SkColorType: {
const SkColorTable& ctable = *pmap.ctable();
*color = SkUnPreMultiply::PMColorToColor(ctable[*pmap.addr8(0, 0)]);
return true;
}
default: // just skip the other configs for now
break;
}
return false;
}
SkColor color_to_565(SkColor color) {
SkPMColor pmColor = SkPreMultiplyColor(color);
U16CPU color16 = SkPixel32ToPixel16(pmColor);
return SkPixel16ToColor(color16);
}
