103 lines
2.9 KiB
C++
103 lines
2.9 KiB
C++
/*
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* Copyright 2012 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm/gm.h"
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#include "include/core/SkBitmap.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkFont.h"
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#include "include/core/SkImageFilter.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/core/SkTypeface.h"
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#include "include/core/SkTypes.h"
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#include "include/effects/SkImageFilters.h"
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#include "tools/ToolUtils.h"
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#define WIDTH 700
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#define HEIGHT 560
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namespace skiagm {
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class MorphologyGM : public GM {
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public:
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MorphologyGM() {
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this->setBGColor(0xFF000000);
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}
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protected:
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SkString onShortName() override {
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return SkString("morphology");
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}
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void onOnceBeforeDraw() override {
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auto surf = SkSurface::MakeRasterN32Premul(135, 135);
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SkFont font(ToolUtils::create_portable_typeface(), 64.0f);
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SkPaint paint;
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paint.setColor(0xFFFFFFFF);
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surf->getCanvas()->drawString("ABC", 10, 55, font, paint);
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surf->getCanvas()->drawString("XYZ", 10, 110, font, paint);
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fImage = surf->makeImageSnapshot();
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}
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SkISize onISize() override {
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return SkISize::Make(WIDTH, HEIGHT);
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}
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void drawClippedBitmap(SkCanvas* canvas, const SkPaint& paint, int x, int y) {
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canvas->save();
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canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
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canvas->clipIRect(fImage->bounds());
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canvas->drawImage(fImage, 0, 0, SkSamplingOptions(), &paint);
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canvas->restore();
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}
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void onDraw(SkCanvas* canvas) override {
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struct {
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int fWidth, fHeight;
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int fRadiusX, fRadiusY;
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} samples[] = {
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{ 140, 140, 0, 0 },
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{ 140, 140, 0, 2 },
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{ 140, 140, 2, 0 },
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{ 140, 140, 2, 2 },
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{ 24, 24, 25, 25 },
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};
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SkPaint paint;
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SkIRect cropRect = SkIRect::MakeXYWH(25, 20, 100, 80);
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for (unsigned j = 0; j < 4; ++j) {
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for (unsigned i = 0; i < SK_ARRAY_COUNT(samples); ++i) {
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const SkIRect* cr = j & 0x02 ? &cropRect : nullptr;
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if (j & 0x01) {
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paint.setImageFilter(SkImageFilters::Erode(
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samples[i].fRadiusX, samples[i].fRadiusY, nullptr, cr));
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} else {
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paint.setImageFilter(SkImageFilters::Dilate(
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samples[i].fRadiusX, samples[i].fRadiusY, nullptr, cr));
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}
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this->drawClippedBitmap(canvas, paint, i * 140, j * 140);
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}
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}
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}
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private:
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sk_sp<SkImage> fImage;
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using INHERITED = GM;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM(return new MorphologyGM;)
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} // namespace skiagm
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