virtual void onDrawContent(SkCanvas* canvas)
{
SkBitmap bitmap;
create_bitmap(&bitmap);
int x = bitmap.width() / 2;
int y = bitmap.height() / 2;
SkBitmap subset;
bitmap.extractSubset(&subset, SkIRect::MakeXYWH(x, y, x, y));
canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
canvas->drawBitmap(bitmap, 0, 0);
canvas->drawBitmap(subset, 0, 0);
// Now do the same but with a device bitmap as source image
SkRefPtr<SkDevice> primaryDevice(canvas->getDevice());
SkRefPtr<SkDevice> secondDevice(canvas->createCompatibleDevice(
SkBitmap::kARGB_8888_Config, bitmap.width(),
bitmap.height(), true));
secondDevice->unref();
SkCanvas secondCanvas(secondDevice.get());
secondCanvas.writePixels(bitmap, 0, 0);
SkBitmap deviceBitmap = secondDevice->accessBitmap(false);
SkBitmap deviceSubset;
deviceBitmap.extractSubset(&deviceSubset,
SkIRect::MakeXYWH(x, y, x, y));
canvas->translate(SkIntToScalar(120), SkIntToScalar(0));
canvas->drawBitmap(deviceBitmap, 0, 0);
canvas->drawBitmap(deviceSubset, 0, 0);
}
virtual void onDrawContent(SkCanvas* canvas) {
SkIRect srcRect;
SkRect dstRect;
SkPaint paint;
paint.setFilterBitmap(true);
// Test that bitmap draws from malloc-backed bitmaps respect
// the constrained texture domain.
srcRect.setXYWH(1, 1, 3, 3);
dstRect.setXYWH(5.0f, 5.0f, 305.0f, 305.0f);
canvas->drawBitmapRect(fBM, &srcRect, dstRect, &paint);
// Test that bitmap draws across separate devices also respect
// the constrainted texture domain.
// Note: GPU-backed bitmaps follow a different rendering path
// when copying from one GPU device to another.
SkAutoTUnref<SkDevice> secondDevice(canvas->createCompatibleDevice(
SkBitmap::kARGB_8888_Config, 5, 5, true));
SkCanvas secondCanvas(secondDevice.get());
srcRect.setXYWH(1, 1, 3, 3);
dstRect.setXYWH(1.0f, 1.0f, 3.0f, 3.0f);
secondCanvas.drawBitmapRect(fBM, &srcRect, dstRect, &paint);
SkBitmap deviceBitmap = secondDevice->accessBitmap(false);
srcRect.setXYWH(1, 1, 3, 3);
dstRect.setXYWH(405.0f, 5.0f, 305.0f, 305.0f);
canvas->drawBitmapRect(deviceBitmap, &srcRect, dstRect, &paint);
// Test that bitmap blurring using a subrect
// renders correctly
srcRect.setXYWH(1, 1, 3, 3);
dstRect.setXYWH(5.0f, 405.0f, 305.0f, 305.0f);
SkMaskFilter* mf = SkBlurMaskFilter::Create(
5,
SkBlurMaskFilter::kNormal_BlurStyle,
SkBlurMaskFilter::kHighQuality_BlurFlag |
SkBlurMaskFilter::kIgnoreTransform_BlurFlag);
paint.setMaskFilter(mf)->unref();
canvas->drawBitmapRect(deviceBitmap, &srcRect, dstRect, &paint);
// Blur and a rotation + NULL src rect
// This should not trigger the texture domain code
// but it will test a code path in SkGpuDevice::drawBitmap
// that handles blurs with rects transformed to non-
// orthogonal rects. It also tests the NULL src rect handling
mf = SkBlurMaskFilter::Create(
5,
SkBlurMaskFilter::kNormal_BlurStyle,
SkBlurMaskFilter::kHighQuality_BlurFlag);
paint.setMaskFilter(mf)->unref();
dstRect.setXYWH(-150.0f, -150.0f, 300.0f, 300.0f);
canvas->translate(550, 550);
canvas->rotate(45);
canvas->drawBitmapRect(fBM, NULL, dstRect, &paint);
}
