void onDraw(const int loops, SkCanvas* canvas) override {
SkRect r = getFilterRect();
SkPaint paint;
paint.setColor(SK_ColorRED);
for (int i = 0; i < loops; i++) {
for (float brightness = -1.0f; brightness <= 1.0f; brightness += 0.4f) {
SkAutoTUnref<SkImageFilter> dim(make_brightness(-brightness));
SkAutoTUnref<SkImageFilter> bright(make_brightness(brightness, dim));
paint.setImageFilter(bright);
canvas->drawRect(r, paint);
}
}
}
void onDraw(const int loops, SkCanvas* canvas) override {
SkRect r = getFilterRect();
SkPaint paint;
paint.setColor(SK_ColorRED);
for (int i = 0; i < loops; i++) {
SkAutoTUnref<SkImageFilter> brightness(make_brightness(1.0f));
paint.setImageFilter(brightness);
canvas->drawRect(r, paint);
}
}
virtual void onDraw(SkCanvas* canvas) {
SkRect r = SkRect::MakeWH(FILTER_WIDTH, FILTER_HEIGHT);
SkPaint paint;
paint.setColor(SK_ColorRED);
canvas->save();
for (float brightness = -1.0f; brightness <= 1.0f; brightness += 0.2f) {
SkAutoTUnref<SkImageFilter> dim(make_brightness(-brightness));
SkAutoTUnref<SkImageFilter> bright(make_brightness(brightness, dim));
paint.setImageFilter(bright);
drawClippedRect(canvas, r, paint);
canvas->translate(FILTER_WIDTH + MARGIN, 0);
}
canvas->restore();
canvas->translate(0, FILTER_HEIGHT + MARGIN);
{
SkAutoTUnref<SkImageFilter> brightness(make_brightness(0.9f));
SkAutoTUnref<SkImageFilter> grayscale(make_grayscale(brightness));
paint.setImageFilter(grayscale);
drawClippedRect(canvas, r, paint);
canvas->translate(FILTER_WIDTH + MARGIN, 0);
}
{
SkAutoTUnref<SkImageFilter> grayscale(make_grayscale());
SkAutoTUnref<SkImageFilter> brightness(make_brightness(0.9f, grayscale));
paint.setImageFilter(brightness);
drawClippedRect(canvas, r, paint);
canvas->translate(FILTER_WIDTH + MARGIN, 0);
}
{
SkAutoTUnref<SkImageFilter> blue(make_mode_blue());
SkAutoTUnref<SkImageFilter> brightness(make_brightness(1.0f, blue));
paint.setImageFilter(brightness);
drawClippedRect(canvas, r, paint);
canvas->translate(FILTER_WIDTH + MARGIN, 0);
}
{
SkAutoTUnref<SkImageFilter> brightness(make_brightness(1.0f));
SkAutoTUnref<SkImageFilter> blue(make_mode_blue(brightness));
paint.setImageFilter(blue);
drawClippedRect(canvas, r, paint);
canvas->translate(FILTER_WIDTH + MARGIN, 0);
}
{
SkAutoTUnref<SkImageFilter> blur(make_blur(3.0f));
SkAutoTUnref<SkImageFilter> brightness(make_brightness(0.5f, blur));
paint.setImageFilter(brightness);
drawClippedRect(canvas, r, paint, 3);
canvas->translate(FILTER_WIDTH + MARGIN, 0);
}
{
SkAutoTUnref<SkImageFilter> blue(make_mode_blue());
paint.setImageFilter(blue.get());
drawClippedRect(canvas, r, paint, 5);
canvas->translate(FILTER_WIDTH + MARGIN, 0);
}
}