blob: ee1afae64e809926fb0c0b789d042c2282cc1eb1 [file] [log] [blame]
/*
* 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/gm.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkFont.h"
#include "include/core/SkImageFilter.h"
#include "include/core/SkPaint.h"
#include "include/core/SkRect.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkTypeface.h"
#include "include/core/SkTypes.h"
#include "include/effects/SkImageFilters.h"
#include "tools/ToolUtils.h"
#define WIDTH 700
#define HEIGHT 560
namespace skiagm {
class MorphologyGM : public GM {
public:
MorphologyGM() {
this->setBGColor(0xFF000000);
}
protected:
SkString onShortName() override {
return SkString("morphology");
}
void onOnceBeforeDraw() override {
auto surf = SkSurface::MakeRasterN32Premul(135, 135);
SkFont font(ToolUtils::create_portable_typeface(), 64.0f);
SkPaint paint;
paint.setColor(0xFFFFFFFF);
surf->getCanvas()->drawString("ABC", 10, 55, font, paint);
surf->getCanvas()->drawString("XYZ", 10, 110, font, paint);
fImage = surf->makeImageSnapshot();
}
SkISize onISize() override {
return SkISize::Make(WIDTH, HEIGHT);
}
void drawClippedBitmap(SkCanvas* canvas, const SkPaint& paint, int x, int y) {
canvas->save();
canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
canvas->clipIRect(fImage->bounds());
canvas->drawImage(fImage, 0, 0, SkSamplingOptions(), &paint);
canvas->restore();
}
void onDraw(SkCanvas* canvas) override {
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;
SkIRect cropRect = SkIRect::MakeXYWH(25, 20, 100, 80);
for (unsigned j = 0; j < 4; ++j) {
for (unsigned i = 0; i < std::size(samples); ++i) {
const SkIRect* cr = j & 0x02 ? &cropRect : nullptr;
if (j & 0x01) {
paint.setImageFilter(SkImageFilters::Erode(
samples[i].fRadiusX, samples[i].fRadiusY, nullptr, cr));
} else {
paint.setImageFilter(SkImageFilters::Dilate(
samples[i].fRadiusX, samples[i].fRadiusY, nullptr, cr));
}
this->drawClippedBitmap(canvas, paint, i * 140, j * 140);
}
}
}
private:
sk_sp<SkImage> fImage;
using INHERITED = GM;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new MorphologyGM;)
} // namespace skiagm