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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "SkCanvas.h"
#include "SkGradientShader.h"
// test shader w/ transparency
static SkShader* make_grad(SkScalar width) {
SkColor colors[] = { SK_ColorRED, 0x0000FF00, SK_ColorBLUE };
SkPoint pts[] = { { 0, 0 }, { width, 0 } };
return SkGradientShader::CreateLinear(pts, colors, NULL,
SK_ARRAY_COUNT(colors),
SkShader::kMirror_TileMode);
}
// test opaque shader
static SkShader* make_grad2(SkScalar width) {
SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE };
SkPoint pts[] = { { 0, 0 }, { width, 0 } };
return SkGradientShader::CreateLinear(pts, colors, NULL,
SK_ARRAY_COUNT(colors),
SkShader::kMirror_TileMode);
}
namespace skiagm {
class GradTextGM : public GM {
public:
GradTextGM () {}
protected:
virtual SkString onShortName() {
return SkString("gradtext");
}
virtual SkISize onISize() { return make_isize(500, 480); }
static void draw_text(SkCanvas* canvas, const SkPaint& paint) {
const char* text = "When in the course of human events";
size_t len = strlen(text);
canvas->drawText(text, len, 0, 0, paint);
}
static void draw_text3(SkCanvas* canvas, const SkPaint& paint) {
SkPaint p(paint);
p.setAntiAlias(false);
draw_text(canvas, p);
p.setAntiAlias(true);
canvas->translate(0, paint.getTextSize() * 4/3);
draw_text(canvas, p);
p.setLCDRenderText(true);
canvas->translate(0, paint.getTextSize() * 4/3);
draw_text(canvas, p);
}
virtual void onDraw(SkCanvas* canvas) {
SkPaint paint;
paint.setTextSize(SkIntToScalar(26));
const SkISize& size = this->getISize();
SkRect r = SkRect::MakeWH(SkIntToScalar(size.width()),
SkIntToScalar(size.height()) / 2);
canvas->drawRect(r, paint);
canvas->translate(SkIntToScalar(20), paint.getTextSize());
for (int i = 0; i < 2; ++i) {
paint.setShader(make_grad(SkIntToScalar(80)))->unref();
draw_text3(canvas, paint);
canvas->translate(0, paint.getTextSize() * 2);
paint.setShader(make_grad2(SkIntToScalar(80)))->unref();
draw_text3(canvas, paint);
canvas->translate(0, paint.getTextSize() * 2);
}
}
private:
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static GM* MyFactory(void*) { return new GradTextGM; }
static GMRegistry reg(MyFactory);
}
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