88 lines
2.5 KiB
C++
88 lines
2.5 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 "SkCanvas.h"
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#include "SkGradientShader.h"
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static SkShader* make_grad(SkScalar width) {
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SkColor colors[] = { SK_ColorBLACK, SK_ColorBLACK, 0 };
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SkScalar pos[] = { 0, SK_Scalar1 * 5 / 10, SK_Scalar1 };
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SkPoint pts[] = { { 0, 0 }, { width, 0 } };
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return SkGradientShader::CreateLinear(pts, colors, pos,
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SK_ARRAY_COUNT(colors),
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SkShader::kMirror_TileMode);
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}
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static SkShader* make_grad2(SkScalar width) {
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SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE };
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SkPoint pts[] = { { 0, 0 }, { width, 0 } };
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return SkGradientShader::CreateLinear(pts, colors, NULL,
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SK_ARRAY_COUNT(colors),
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SkShader::kMirror_TileMode);
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}
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namespace skiagm {
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class GradTextGM : public GM {
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public:
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GradTextGM () {}
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protected:
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virtual SkString onShortName() {
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return SkString("gradtext");
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}
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virtual SkISize onISize() { return make_isize(640, 480); }
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static void draw_text(SkCanvas* canvas, const SkPaint& paint) {
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const char* text = "When in the course of human events";
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size_t len = strlen(text);
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canvas->drawText(text, len, 0, 0, paint);
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}
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static void draw_text3(SkCanvas* canvas, const SkPaint& paint) {
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SkPaint p(paint);
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p.setAntiAlias(false);
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draw_text(canvas, p);
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p.setAntiAlias(true);
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canvas->translate(0, SkIntToScalar(20));
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draw_text(canvas, p);
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p.setLCDRenderText(true);
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canvas->translate(0, SkIntToScalar(20));
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draw_text(canvas, p);
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}
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virtual void onDraw(SkCanvas* canvas) {
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canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
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// The blits special-case opaque and non-paque shaders, so test both
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SkPaint paint;
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paint.setTextSize(SkIntToScalar(16));
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paint.setShader(make_grad(SkIntToScalar(80)))->unref();
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draw_text3(canvas, paint);
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canvas->translate(0, SkIntToScalar(40));
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paint.setShader(make_grad2(SkIntToScalar(80)))->unref();
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draw_text3(canvas, paint);
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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 GradTextGM; }
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static GMRegistry reg(MyFactory);
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}
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