17b7894609
git-svn-id: http://skia.googlecode.com/svn/trunk@2180 2bbb7eff-a529-9590-31e7-b0007b416f81
81 lines
2.0 KiB
C++
81 lines
2.0 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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class PointsGM : public GM {
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public:
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PointsGM() {}
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protected:
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virtual SkString onShortName() {
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return SkString("points");
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}
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virtual SkISize onISize() {
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return make_isize(640, 490);
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}
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void drawBG(SkCanvas* canvas) {
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canvas->drawColor(SK_ColorWHITE);
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}
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static void fill_pts(SkPoint pts[], size_t n, SkRandom* rand) {
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for (size_t i = 0; i < n; i++) {
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// Compute these independently and store in variables, rather
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// than in the parameter-passing expression, to get consistent
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// evaluation order across compilers.
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float y = rand->nextUScalar1() * 480;
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float x = rand->nextUScalar1() * 640;
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pts[i].set(x, y);
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}
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}
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virtual void onDraw(SkCanvas* canvas) {
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this->drawBG(canvas);
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canvas->translate(SK_Scalar1, SK_Scalar1);
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SkRandom rand;
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SkPaint p0, p1, p2, p3;
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const size_t n = 99;
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p0.setColor(SK_ColorRED);
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p1.setColor(SK_ColorGREEN);
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p2.setColor(SK_ColorBLUE);
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p3.setColor(SK_ColorWHITE);
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p0.setStrokeWidth(SkIntToScalar(4));
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p2.setStrokeCap(SkPaint::kRound_Cap);
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p2.setStrokeWidth(SkIntToScalar(6));
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SkPoint* pts = new SkPoint[n];
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fill_pts(pts, n, &rand);
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canvas->drawPoints(SkCanvas::kPolygon_PointMode, n, pts, p0);
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canvas->drawPoints(SkCanvas::kLines_PointMode, n, pts, p1);
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canvas->drawPoints(SkCanvas::kPoints_PointMode, n, pts, p2);
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canvas->drawPoints(SkCanvas::kPoints_PointMode, n, pts, p3);
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delete[] pts;
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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 PointsGM; }
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static GMRegistry reg(MyFactory);
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}
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