cac5fd597f
This is part of an effort to ensure that all SkPaint effects can only be allocated on the heap. This patch makes the constructors of SkImageFilter and its subclasses non-public and instead provides factory methods for creating these objects on the heap. We temporarily keep constructor of publicly visible classes public behind a flag. BUG=skia:2187 R=scroggo@google.com, mtklein@chromium.org, reed@google.com, senorblanco@google.com, senorblanco@chromium.org, bsalomon@google.com, sugoi@chromium.org, zork@chromium.org Author: dominikg@chromium.org Review URL: https://codereview.chromium.org/182983003 git-svn-id: http://skia.googlecode.com/svn/trunk@13718 2bbb7eff-a529-9590-31e7-b0007b416f81
90 lines
3.0 KiB
C++
90 lines
3.0 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"
|
|
|
|
// This GM exercises the SkBitmapSource ImageFilter class.
|
|
|
|
class BitmapSourceGM : public skiagm::GM {
|
|
public:
|
|
BitmapSourceGM() {
|
|
}
|
|
|
|
protected:
|
|
virtual SkString onShortName() SK_OVERRIDE {
|
|
return SkString("bitmapsource");
|
|
}
|
|
|
|
void makeBitmap() {
|
|
fBitmap.allocN32Pixels(100, 100);
|
|
SkCanvas canvas(fBitmap);
|
|
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() SK_OVERRIDE { return SkISize::Make(500, 150); }
|
|
|
|
virtual void onOnceBeforeDraw() SK_OVERRIDE {
|
|
this->makeBitmap();
|
|
}
|
|
|
|
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();
|
|
}
|
|
|
|
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
|
|
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(SkBitmapSource::Create(fBitmap));
|
|
SkAutoTUnref<SkImageFilter> bitmapSourceSrcRect(SkBitmapSource::Create(fBitmap, srcRect, srcRect));
|
|
SkAutoTUnref<SkImageFilter> bitmapSourceSrcRectDstRect(SkBitmapSource::Create(fBitmap, srcRect, dstRect));
|
|
SkAutoTUnref<SkImageFilter> bitmapSourceDstRectOnly(SkBitmapSource::Create(fBitmap, bounds, dstRect));
|
|
|
|
// Draw an unscaled bitmap.
|
|
fillRectFiltered(canvas, clipRect, bitmapSource);
|
|
canvas->translate(SkIntToScalar(100), 0);
|
|
|
|
// Draw an unscaled subset of the source bitmap (srcRect -> srcRect).
|
|
fillRectFiltered(canvas, clipRect, bitmapSourceSrcRect);
|
|
canvas->translate(SkIntToScalar(100), 0);
|
|
|
|
// Draw a subset of the bitmap scaled to a destination rect (srcRect -> dstRect).
|
|
fillRectFiltered(canvas, clipRect, bitmapSourceSrcRectDstRect);
|
|
canvas->translate(SkIntToScalar(100), 0);
|
|
|
|
// Draw the entire bitmap scaled to a destination rect (bounds -> dstRect).
|
|
fillRectFiltered(canvas, clipRect, bitmapSourceDstRectOnly);
|
|
canvas->translate(SkIntToScalar(100), 0);
|
|
}
|
|
}
|
|
|
|
private:
|
|
SkBitmap fBitmap;
|
|
typedef GM INHERITED;
|
|
};
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
DEF_GM( return new BitmapSourceGM; )
|