aad8b27ec6
For some reason, GM's are now being composited against white in some modes, where the alpha used to be ignored (or composited against black, I'm not sure which). At any rate, it doesn't make much sense to have alpha in the result anyway, so let's clear to opaque black instead of transparent black and avoid the problem. This is a trial balloon for bitmapsource and pictureimagefilter. If all goes well, I'll make this change more widely. R=scroggo BUG=skia:3319 Review URL: https://codereview.chromium.org/1074513002
112 lines
3.9 KiB
C++
112 lines
3.9 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 "SkPictureImageFilter.h"
|
|
#include "SkPictureRecorder.h"
|
|
|
|
// This GM exercises the SkPictureImageFilter ImageFilter class.
|
|
|
|
class PictureImageFilterGM : public skiagm::GM {
|
|
public:
|
|
PictureImageFilterGM() {
|
|
}
|
|
|
|
protected:
|
|
SkString onShortName() override {
|
|
return SkString("pictureimagefilter");
|
|
}
|
|
|
|
void makePicture() {
|
|
SkPictureRecorder recorder;
|
|
SkCanvas* canvas = recorder.beginRecording(100, 100, NULL, 0);
|
|
canvas->clear(SK_ColorBLACK);
|
|
SkPaint paint;
|
|
paint.setAntiAlias(true);
|
|
sk_tool_utils::set_portable_typeface(&paint);
|
|
paint.setColor(0xFFFFFFFF);
|
|
paint.setTextSize(SkIntToScalar(96));
|
|
const char* str = "e";
|
|
canvas->drawText(str, strlen(str), SkIntToScalar(20), SkIntToScalar(70), paint);
|
|
fPicture.reset(recorder.endRecording());
|
|
}
|
|
|
|
SkISize onISize() override { return SkISize::Make(600, 300); }
|
|
|
|
void onOnceBeforeDraw() override {
|
|
this->makePicture();
|
|
}
|
|
|
|
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 emptyRect = SkRect::MakeXYWH(20, 20, 0, 0);
|
|
SkRect bounds = SkRect::MakeXYWH(0, 0, 100, 100);
|
|
SkAutoTUnref<SkPictureImageFilter> pictureSource(
|
|
SkPictureImageFilter::Create(fPicture));
|
|
SkAutoTUnref<SkPictureImageFilter> pictureSourceSrcRect(
|
|
SkPictureImageFilter::Create(fPicture, srcRect));
|
|
SkAutoTUnref<SkPictureImageFilter> pictureSourceEmptyRect(
|
|
SkPictureImageFilter::Create(fPicture, emptyRect));
|
|
SkAutoTUnref<SkPictureImageFilter> pictureSourceResampled(
|
|
SkPictureImageFilter::CreateForLocalSpace(fPicture, fPicture->cullRect(),
|
|
kLow_SkFilterQuality));
|
|
SkAutoTUnref<SkPictureImageFilter> pictureSourcePixelated(
|
|
SkPictureImageFilter::CreateForLocalSpace(fPicture, fPicture->cullRect(),
|
|
kNone_SkFilterQuality));
|
|
|
|
canvas->save();
|
|
// Draw the picture unscaled.
|
|
fillRectFiltered(canvas, bounds, pictureSource);
|
|
canvas->translate(SkIntToScalar(100), 0);
|
|
|
|
// Draw an unscaled subset of the source picture.
|
|
fillRectFiltered(canvas, bounds, pictureSourceSrcRect);
|
|
canvas->translate(SkIntToScalar(100), 0);
|
|
|
|
// Draw the picture to an empty rect (should draw nothing).
|
|
fillRectFiltered(canvas, bounds, pictureSourceEmptyRect);
|
|
canvas->translate(SkIntToScalar(100), 0);
|
|
|
|
canvas->restore();
|
|
|
|
// Draw the picture scaled
|
|
canvas->translate(0, SkIntToScalar(100));
|
|
canvas->scale(200 / srcRect.width(), 200 / srcRect.height());
|
|
canvas->translate(-srcRect.fLeft, -srcRect.fTop);
|
|
fillRectFiltered(canvas, srcRect, pictureSource);
|
|
|
|
// Draw the picture scaled, but rasterized at original resolution
|
|
canvas->translate(srcRect.width(), 0);
|
|
fillRectFiltered(canvas, srcRect, pictureSourceResampled);
|
|
|
|
// Draw the picture scaled, pixelated
|
|
canvas->translate(srcRect.width(), 0);
|
|
fillRectFiltered(canvas, srcRect, pictureSourcePixelated);
|
|
}
|
|
}
|
|
|
|
private:
|
|
SkAutoTUnref<SkPicture> fPicture;
|
|
typedef GM INHERITED;
|
|
};
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
DEF_GM( return new PictureImageFilterGM; )
|