зеркало из https://github.com/mozilla/moz-skia.git
150 строки
4.0 KiB
C++
150 строки
4.0 KiB
C++
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/*
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* Copyright 2011 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 "SkRandom.h"
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namespace skiagm {
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#define W 400
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#define H 400
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#define N 50
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static const SkScalar SW = SkIntToScalar(W);
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static const SkScalar SH = SkIntToScalar(H);
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static void rnd_rect(SkRect* r, SkPaint* paint, SkRandom& rand) {
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SkScalar x = rand.nextUScalar1() * W;
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SkScalar y = rand.nextUScalar1() * H;
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SkScalar w = rand.nextUScalar1() * (W >> 2);
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SkScalar h = rand.nextUScalar1() * (H >> 2);
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SkScalar hoffset = rand.nextSScalar1();
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SkScalar woffset = rand.nextSScalar1();
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r->set(x, y, x + w, y + h);
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r->offset(-w/2 + woffset, -h/2 + hoffset);
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paint->setColor(rand.nextU());
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paint->setAlpha(0xFF);
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}
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class StrokesGM : public GM {
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public:
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StrokesGM() {}
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protected:
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virtual SkString onShortName() {
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return SkString("strokes_round");
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}
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virtual SkISize onISize() {
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return make_isize(W, H*2);
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}
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virtual void onDraw(SkCanvas* canvas) {
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SkPaint paint;
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paint.setStyle(SkPaint::kStroke_Style);
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paint.setStrokeWidth(SkIntToScalar(9)/2);
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for (int y = 0; y < 2; y++) {
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paint.setAntiAlias(!!y);
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SkAutoCanvasRestore acr(canvas, true);
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canvas->translate(0, SH * y);
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canvas->clipRect(SkRect::MakeLTRB(
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SkIntToScalar(2), SkIntToScalar(2)
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, SW - SkIntToScalar(2), SH - SkIntToScalar(2)
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));
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SkRandom rand;
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for (int i = 0; i < N; i++) {
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SkRect r;
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rnd_rect(&r, &paint, rand);
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canvas->drawOval(r, paint);
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rnd_rect(&r, &paint, rand);
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canvas->drawRoundRect(r, r.width()/4, r.height()/4, paint);
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rnd_rect(&r, &paint, rand);
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}
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}
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}
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private:
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typedef GM INHERITED;
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};
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class Strokes2GM : public GM {
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SkPath fPath;
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public:
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Strokes2GM() {
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SkRandom rand;
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fPath.moveTo(0, 0);
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for (int i = 0; i < 13; i++) {
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SkScalar x = rand.nextUScalar1() * (W >> 1);
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SkScalar y = rand.nextUScalar1() * (H >> 1);
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fPath.lineTo(x, y);
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}
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}
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protected:
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virtual SkString onShortName() {
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return SkString("strokes_poly");
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}
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virtual SkISize onISize() {
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return make_isize(W, H*2);
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}
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static void rotate(SkScalar angle, SkScalar px, SkScalar py, SkCanvas* canvas) {
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SkMatrix matrix;
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matrix.setRotate(angle, px, py);
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canvas->concat(matrix);
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}
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virtual void onDraw(SkCanvas* canvas) {
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canvas->drawColor(SK_ColorWHITE);
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SkPaint paint;
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paint.setStyle(SkPaint::kStroke_Style);
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paint.setStrokeWidth(SkIntToScalar(9)/2);
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for (int y = 0; y < 2; y++) {
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paint.setAntiAlias(!!y);
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SkAutoCanvasRestore acr(canvas, true);
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canvas->translate(0, SH * y);
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canvas->clipRect(SkRect::MakeLTRB(SkIntToScalar(2),
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SkIntToScalar(2),
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SW - SkIntToScalar(2),
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SH - SkIntToScalar(2)));
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SkRandom rand;
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for (int i = 0; i < N/2; i++) {
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SkRect r;
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rnd_rect(&r, &paint, rand);
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rotate(SkIntToScalar(15), SW/2, SH/2, canvas);
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canvas->drawPath(fPath, paint);
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}
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}
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}
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private:
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static GM* MyFactory(void*) { return new StrokesGM; }
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static GMRegistry reg(MyFactory);
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static GM* MyFactory2(void*) { return new Strokes2GM; }
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static GMRegistry reg2(MyFactory2);
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}
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