2a475eae62
Many tests and examples use drawText with a guess of how long the text is in bytes, or a call to strlen(). Add a helper to SkCanvas to simplify these examples. Add another helper for SkString. R=reed@google.com Change-Id: I0204a31e938f065606f08ee7cd9a6b36db791ee2 Reviewed-on: https://skia-review.googlesource.com/13642 Commit-Queue: Cary Clark <caryclark@google.com> Reviewed-by: Cary Clark <caryclark@google.com> Reviewed-by: Mike Reed <reed@google.com> Reviewed-by: Cary Clark <caryclark@skia.org>
100 lines
3.0 KiB
C++
100 lines
3.0 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.h"
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#include "sk_tool_utils.h"
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#include "SkMorphologyImageFilter.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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fBitmap.allocN32Pixels(135, 135);
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SkCanvas canvas(fBitmap);
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canvas.clear(0x0);
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SkPaint paint;
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paint.setAntiAlias(true);
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sk_tool_utils::set_portable_typeface(&paint);
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const char* str1 = "ABC";
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const char* str2 = "XYZ";
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paint.setColor(0xFFFFFFFF);
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paint.setTextSize(64);
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canvas.drawString(str1, 10, 55, paint);
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canvas.drawString(str2, 10, 110, paint);
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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->clipRect(SkRect::MakeWH(
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SkIntToScalar(fBitmap.width()), SkIntToScalar(fBitmap.height())));
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canvas->drawBitmap(fBitmap, 0, 0, &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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SkImageFilter::CropRect cropRect(SkRect::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 SkImageFilter::CropRect* cr = j & 0x02 ? &cropRect : nullptr;
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if (j & 0x01) {
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paint.setImageFilter(SkErodeImageFilter::Make(samples[i].fRadiusX,
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samples[i].fRadiusY,
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nullptr,
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cr));
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} else {
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paint.setImageFilter(SkDilateImageFilter::Make(samples[i].fRadiusX,
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samples[i].fRadiusY,
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nullptr,
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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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SkBitmap fBitmap;
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM(return new MorphologyGM;)
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}
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