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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"
#include "SkTypeface.h"
// test shader w/ transparency
static sk_sp<SkShader> make_grad(SkScalar width) {
SkColor colors[] = { SK_ColorRED, 0x0000FF00, SK_ColorBLUE };
SkPoint pts[] = { { 0, 0 }, { width, 0 } };
return SkGradientShader::MakeLinear(pts, colors, nullptr, SK_ARRAY_COUNT(colors),
SkShader::kMirror_TileMode);
}
// test opaque shader
static sk_sp<SkShader> make_grad2(SkScalar width) {
SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE };
SkPoint pts[] = { { 0, 0 }, { width, 0 } };
return SkGradientShader::MakeLinear(pts, colors, nullptr, SK_ARRAY_COUNT(colors),
SkShader::kMirror_TileMode);
}
static sk_sp<SkShader> make_chrome_solid() {
SkColor colors[] = { SK_ColorGREEN, SK_ColorGREEN };
SkPoint pts[] = { { 0, 0 }, { 1, 0 } };
return SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkShader::kClamp_TileMode);
}
namespace skiagm {
// Replicate chrome layout test - clipped pathed gradient-shaded text
class ChromeGradTextGM1 : public GM {
public:
ChromeGradTextGM1() { }
protected:
virtual SkString onShortName() { return SkString("chrome_gradtext1"); }
virtual SkISize onISize() { return SkISize::Make(500, 480); }
virtual void onDraw(SkCanvas* canvas) {
SkPaint paint;
sk_tool_utils::set_portable_typeface(&paint);
SkRect r = SkRect::MakeWH(SkIntToScalar(100), SkIntToScalar(100));
canvas->clipRect(r);
paint.setColor(SK_ColorRED);
canvas->drawRect(r, paint);
// Minimal repro doesn't require AA, LCD, or a nondefault typeface
paint.setShader(make_chrome_solid());
paint.setTextSize(SkIntToScalar(500));
canvas->drawText("I", 1, 0, 100, paint);
}
private:
typedef GM INHERITED;
};
// Replicate chrome layout test - switching between solid & gradient text
class ChromeGradTextGM2 : public GM {
public:
ChromeGradTextGM2() { }
protected:
virtual SkString onShortName() { return SkString("chrome_gradtext2"); }
virtual SkISize onISize() { return SkISize::Make(500, 480); }
virtual void onDraw(SkCanvas* canvas) {
SkPaint paint;
sk_tool_utils::set_portable_typeface(&paint);
paint.setStyle(SkPaint::kFill_Style);
canvas->drawText("Normal Fill Text", 16, 0, 50, paint);
paint.setStyle(SkPaint::kStroke_Style);
canvas->drawText("Normal Stroke Text", 18, 0, 100, paint);
// Minimal repro doesn't require AA, LCD, or a nondefault typeface
paint.setShader(make_chrome_solid());
paint.setStyle(SkPaint::kFill_Style);
canvas->drawText("Gradient Fill Text", 18, 0, 150, paint);
paint.setStyle(SkPaint::kStroke_Style);
canvas->drawText("Gradient Stroke Text", 20, 0, 200, paint);
}
private:
typedef GM INHERITED;
};
class GradTextGM : public GM {
public:
GradTextGM () {}
protected:
SkString onShortName() override {
return SkString("gradtext");
}
SkISize onISize() override { return SkISize::Make(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);
}
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
sk_tool_utils::set_portable_typeface(&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)));
draw_text3(canvas, paint);
canvas->translate(0, paint.getTextSize() * 2);
paint.setShader(make_grad2(SkIntToScalar(80)));
draw_text3(canvas, paint);
canvas->translate(0, paint.getTextSize() * 2);
}
}
private:
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static GM* MyFactory(void*) { return new GradTextGM; }
static GM* CMyFactory(void*) { return new ChromeGradTextGM1; }
static GM* CMyFactory2(void*) { return new ChromeGradTextGM2; }
static GMRegistry reg(MyFactory);
static GMRegistry Creg(CMyFactory);
static GMRegistry Creg2(CMyFactory2);
}
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