virtual void onDraw(SkCanvas* canvas) {
SkRect r;
r.setWH(SkIntToScalar(fRectWidth), SkIntToScalar(fRectHeight));
SkISize canvas_size = canvas->getDeviceSize();
int center_x = (canvas_size.fWidth - (int)(r.width()))/2;
int center_y = (canvas_size.fHeight - (int)(r.height()))/2;
SkMask mask;
if (!this->makeMask(&mask, r)) {
SkPaint paint;
r.offset( SkIntToScalar(center_x), SkIntToScalar(center_y) );
canvas->drawRect(r,paint);
return;
}
SkAutoMaskFreeImage amfi(mask.fImage);
SkBitmap bm;
bm.installMaskPixels(mask);
center_x = (canvas_size.fWidth - mask.fBounds.width())/2;
center_y = (canvas_size.fHeight - mask.fBounds.height())/2;
canvas->drawBitmap(bm, SkIntToScalar(center_x), SkIntToScalar(center_y), NULL);
}
virtual void onDraw(SkCanvas* canvas) {
const int widths[] = {25, 5, 5, 100, 150, 25};
const int heights[] = {100, 100, 5, 25, 150, 25};
const SkBlurStyle styles[] = {kNormal_SkBlurStyle, kInner_SkBlurStyle, kOuter_SkBlurStyle};
const float radii[] = {20, 5, 10};
canvas->translate(50,20);
int cur_x = 0;
int cur_y = 0;
int max_height = 0;
for (size_t i = 0 ; i < SK_ARRAY_COUNT(widths) ; i++) {
int width = widths[i];
int height = heights[i];
SkRect r;
r.setWH(SkIntToScalar(width), SkIntToScalar(height));
SkAutoCanvasRestore autoRestore(canvas, true);
for (size_t j = 0 ; j < SK_ARRAY_COUNT(radii) ; j++) {
float radius = radii[j];
for (size_t k = 0 ; k < SK_ARRAY_COUNT(styles) ; k++) {
SkBlurStyle style = styles[k];
SkMask mask;
SkBlurMask::BlurRect(SkBlurMask::ConvertRadiusToSigma(radius), &mask, r, style);
SkAutoMaskFreeImage amfi(mask.fImage);
SkBitmap bm;
bm.installMaskPixels(mask);
if (cur_x + bm.width() >= fGMWidth - fMargin) {
cur_x = 0;
cur_y += max_height + fPadding;
max_height = 0;
}
canvas->save();
canvas->translate((SkScalar)cur_x, (SkScalar)cur_y);
canvas->translate(-(bm.width() - r.width())/2, -(bm.height()-r.height())/2);
canvas->drawBitmap(bm, 0.f, 0.f, NULL);
canvas->restore();
cur_x += bm.width() + fPadding;
if (bm.height() > max_height)
max_height = bm.height();
}
}
}
}
bool makeMask(SkMask *m, const SkRect& r) override {
SkMask src;
r.roundOut(&src.fBounds);
src.fBounds.offset(-src.fBounds.fLeft, -src.fBounds.fTop); // move to origin
src.fFormat = SkMask::kA8_Format;
src.fRowBytes = src.fBounds.width();
src.fImage = SkMask::AllocImage(src.computeTotalImageSize());
SkAutoMaskFreeImage amfi(src.fImage);
memset(src.fImage, 0xff, src.computeTotalImageSize());
return SkBlurMask::BlurGroundTruth(SkBlurMask::ConvertRadiusToSigma(this->radius()),
m, src, this->style());
}
static void drawClip(SkCanvas* canvas, const SkAAClip& clip) {
SkMask mask;
SkBitmap bm;
clip.copyToMask(&mask);
SkAutoMaskFreeImage amfi(mask.fImage);
bm.installMaskPixels(mask);
SkPaint paint;
canvas->drawBitmap(bm,
SK_Scalar1 * mask.fBounds.fLeft,
SK_Scalar1 * mask.fBounds.fTop,
&paint);
}
static void drawClip(SkCanvas* canvas, const SkAAClip& clip) {
SkMask mask;
SkBitmap bm;
clip.copyToMask(&mask);
SkAutoMaskFreeImage amfi(mask.fImage);
bm.setConfig(SkBitmap::kA8_Config, mask.fBounds.width(),
mask.fBounds.height(), mask.fRowBytes);
bm.setPixels(mask.fImage);
SkPaint paint;
canvas->drawBitmap(bm,
SK_Scalar1 * mask.fBounds.fLeft,
SK_Scalar1 * mask.fBounds.fTop,
&paint);
}
