cd56f812e0
Blink is migrating away from SkBitmaps, so we need an SkImage-based SkImageFilter source. This is pretty much a 1-1 equivalent of SkBitmapSource. To avoid duplication, relocate the SkImage deserialization logic from SkPictureData to SkReadBuffer. R=reed@google.com,robertphillips@google.com,senorblanco@chromium.org Review URL: https://codereview.chromium.org/1343703005
81 lines
2.8 KiB
C++
81 lines
2.8 KiB
C++
/*
|
|
* Copyright 2013 Google Inc.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
#include "gm.h"
|
|
|
|
#include "SkImage.h"
|
|
#include "SkImageSource.h"
|
|
|
|
// This GM exercises the SkImageSource ImageFilter class.
|
|
|
|
class ImageSourceGM : public skiagm::GM {
|
|
public:
|
|
ImageSourceGM() { }
|
|
|
|
protected:
|
|
SkString onShortName() override {
|
|
return SkString("imagesource");
|
|
}
|
|
|
|
SkISize onISize() override { return SkISize::Make(500, 150); }
|
|
|
|
void onOnceBeforeDraw() override {
|
|
SkBitmap bm = sk_tool_utils::create_string_bitmap(100, 100, 0xFFFFFFFF, 20, 70, 96, "e");
|
|
fImage.reset(SkImage::NewFromBitmap(bm));
|
|
}
|
|
|
|
static void FillRectFiltered(SkCanvas* canvas, const SkRect& clipRect, SkImageFilter* filter) {
|
|
SkPaint paint;
|
|
paint.setImageFilter(filter);
|
|
canvas->save();
|
|
canvas->clipRect(clipRect);
|
|
canvas->drawPaint(paint);
|
|
canvas->restore();
|
|
}
|
|
|
|
void onDraw(SkCanvas* canvas) override {
|
|
canvas->clear(SK_ColorBLACK);
|
|
{
|
|
SkRect srcRect = SkRect::MakeXYWH(20, 20, 30, 30);
|
|
SkRect dstRect = SkRect::MakeXYWH(0, 10, 60, 60);
|
|
SkRect clipRect = SkRect::MakeXYWH(0, 0, 100, 100);
|
|
SkRect bounds = SkRect::MakeIWH(fImage->width(), fImage->height());
|
|
SkAutoTUnref<SkImageFilter> imageSource(SkImageSource::Create(fImage));
|
|
SkAutoTUnref<SkImageFilter> imageSourceSrcRect(
|
|
SkImageSource::Create(fImage, srcRect, srcRect, kHigh_SkFilterQuality));
|
|
SkAutoTUnref<SkImageFilter> imageSourceSrcRectDstRect(
|
|
SkImageSource::Create(fImage, srcRect, dstRect, kHigh_SkFilterQuality));
|
|
SkAutoTUnref<SkImageFilter> imageSourceDstRectOnly(
|
|
SkImageSource::Create(fImage, bounds, dstRect, kHigh_SkFilterQuality));
|
|
|
|
// Draw an unscaled bitmap.
|
|
FillRectFiltered(canvas, clipRect, imageSource);
|
|
canvas->translate(SkIntToScalar(100), 0);
|
|
|
|
// Draw an unscaled subset of the source bitmap (srcRect -> srcRect).
|
|
FillRectFiltered(canvas, clipRect, imageSourceSrcRect);
|
|
canvas->translate(SkIntToScalar(100), 0);
|
|
|
|
// Draw a subset of the bitmap scaled to a destination rect (srcRect -> dstRect).
|
|
FillRectFiltered(canvas, clipRect, imageSourceSrcRectDstRect);
|
|
canvas->translate(SkIntToScalar(100), 0);
|
|
|
|
// Draw the entire bitmap scaled to a destination rect (bounds -> dstRect).
|
|
FillRectFiltered(canvas, clipRect, imageSourceDstRectOnly);
|
|
canvas->translate(SkIntToScalar(100), 0);
|
|
}
|
|
}
|
|
|
|
private:
|
|
SkAutoTUnref<SkImage> fImage;
|
|
typedef GM INHERITED;
|
|
};
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
DEF_GM( return new ImageSourceGM; )
|