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/*
* Copyright 2012 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 "SkMorphologyImageFilter.h"
#define WIDTH 700
#define HEIGHT 560
namespace skiagm {
class MorphologyGM : public GM {
public:
MorphologyGM() {
this->setBGColor(0xFF000000);
fOnce = false;
}
protected:
virtual SkString onShortName() {
return SkString("morphology");
}
void make_bitmap() {
fBitmap.allocN32Pixels(135, 135);
SkBitmapDevice device(fBitmap);
SkCanvas canvas(&device);
canvas.clear(0x0);
SkPaint paint;
paint.setAntiAlias(true);
const char* str1 = "ABC";
const char* str2 = "XYZ";
paint.setColor(0xFFFFFFFF);
paint.setTextSize(64);
canvas.drawText(str1, strlen(str1), 10, 55, paint);
canvas.drawText(str2, strlen(str2), 10, 110, paint);
}
virtual SkISize onISize() {
return make_isize(WIDTH, HEIGHT);
}
void drawClippedBitmap(SkCanvas* canvas, const SkPaint& paint, int x, int y) {
canvas->save();
canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
canvas->clipRect(SkRect::MakeWH(
SkIntToScalar(fBitmap.width()), SkIntToScalar(fBitmap.height())));
canvas->drawBitmap(fBitmap, 0, 0, &paint);
canvas->restore();
}
virtual void onDraw(SkCanvas* canvas) {
if (!fOnce) {
make_bitmap();
fOnce = true;
}
struct {
int fWidth, fHeight;
int fRadiusX, fRadiusY;
} samples[] = {
{ 140, 140, 0, 0 },
{ 140, 140, 0, 2 },
{ 140, 140, 2, 0 },
{ 140, 140, 2, 2 },
{ 24, 24, 25, 25 },
};
SkPaint paint;
SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(25, 20, 100, 80));
for (unsigned j = 0; j < 4; ++j) {
for (unsigned i = 0; i < SK_ARRAY_COUNT(samples); ++i) {
const SkImageFilter::CropRect* cr = j & 0x02 ? &cropRect : NULL;
if (j & 0x01) {
paint.setImageFilter(new SkErodeImageFilter(
samples[i].fRadiusX,
samples[i].fRadiusY,
NULL,
cr))->unref();
} else {
paint.setImageFilter(new SkDilateImageFilter(
samples[i].fRadiusX,
samples[i].fRadiusY,
NULL,
cr))->unref();
}
drawClippedBitmap(canvas, paint, i * 140, j * 140);
}
}
}
private:
typedef GM INHERITED;
SkBitmap fBitmap;
bool fOnce;
};
//////////////////////////////////////////////////////////////////////////////
static GM* MyFactory(void*) { return new MorphologyGM; }
static GMRegistry reg(MyFactory);
}
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