skia2/gm/bitmapsource.cpp
commit-bot@chromium.org 094147d522 Implement srcRect and dstRect functionality in SkBitmapSource. This is required for the "preserveAspectRatio" options of SVG's feImage. Covered by new GM "bitmapsource".
This also includes some changes to the xfermodeimagefilter and tileimagefilter GMs to properly handle the CTM. This worked before only because SkBitmapSource was ignoring the CTM. Now that it respects it, we need to give the correct transform. This also means the GMs now work while zoomed.

R=reed@google.com

Author: senorblanco@chromium.org

Review URL: https://codereview.chromium.org/106933002

git-svn-id: http://skia.googlecode.com/svn/trunk@12528 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-12-06 15:59:03 +00:00

96 lines
3.1 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 "SkBitmapSource.h"
class BitmapSourceGM : public skiagm::GM {
public:
BitmapSourceGM() : fInitialized(false) {
}
protected:
virtual SkString onShortName() {
return SkString("bitmapsource");
}
void make_bitmap() {
fBitmap.setConfig(SkBitmap::kARGB_8888_Config, 100, 100);
fBitmap.allocPixels();
SkBitmapDevice device(fBitmap);
SkCanvas canvas(&device);
canvas.clear(0x00000000);
SkPaint paint;
paint.setAntiAlias(true);
paint.setColor(0xFFFFFFFF);
paint.setTextSize(SkIntToScalar(96));
const char* str = "e";
canvas.drawText(str, strlen(str), SkIntToScalar(20), SkIntToScalar(70), paint);
}
virtual SkISize onISize() { return SkISize::Make(500, 150); }
virtual void onDraw(SkCanvas* canvas) {
if (!fInitialized) {
this->make_bitmap();
fInitialized = true;
}
canvas->clear(0x00000000);
{
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;
fBitmap.getBounds(&bounds);
SkAutoTUnref<SkImageFilter> bitmapSource(new SkBitmapSource(fBitmap));
SkAutoTUnref<SkImageFilter> bitmapSourceSrcRect(new SkBitmapSource(fBitmap, srcRect, srcRect));
SkAutoTUnref<SkImageFilter> bitmapSourceSrcRectDstRect(new SkBitmapSource(fBitmap, srcRect, dstRect));
SkAutoTUnref<SkImageFilter> bitmapSourceDstRectOnly(new SkBitmapSource(fBitmap, bounds, dstRect));
SkPaint paint;
paint.setImageFilter(bitmapSource);
canvas->save();
canvas->clipRect(clipRect);
canvas->drawPaint(paint);
canvas->restore();
canvas->translate(SkIntToScalar(100), 0);
paint.setImageFilter(bitmapSourceSrcRect);
canvas->save();
canvas->clipRect(clipRect);
canvas->drawPaint(paint);
canvas->restore();
canvas->translate(SkIntToScalar(100), 0);
paint.setImageFilter(bitmapSourceSrcRectDstRect);
canvas->save();
canvas->clipRect(clipRect);
canvas->drawPaint(paint);
canvas->restore();
canvas->translate(SkIntToScalar(100), 0);
paint.setImageFilter(bitmapSourceDstRectOnly);
canvas->save();
canvas->clipRect(clipRect);
canvas->drawPaint(paint);
canvas->restore();
canvas->translate(SkIntToScalar(100), 0);
}
}
private:
typedef GM INHERITED;
SkBitmap fBitmap;
bool fInitialized;
};
///////////////////////////////////////////////////////////////////////////////
static skiagm::GM* MyFactory(void*) { return new BitmapSourceGM; }
static skiagm::GMRegistry reg(MyFactory);