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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/gm.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkFont.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPoint.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkScalar.h"
#include "include/core/SkShader.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkTileMode.h"
#include "include/core/SkTypeface.h"
#include "include/core/SkTypes.h"
#include "include/effects/SkGradientShader.h"
#include "tools/ToolUtils.h"
namespace {
// 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),
SkTileMode::kMirror);
}
// 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),
SkTileMode::kMirror);
}
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, SkTileMode::kClamp);
}
// Replicate chrome layout test - clipped pathed gradient-shaded text
class ChromeGradTextGM1 : public skiagm::GM {
SkString onShortName() override { return SkString("chrome_gradtext1"); }
SkISize onISize() override { return {500, 480}; }
void onDraw(SkCanvas* canvas) override {
SkPaint 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());
SkFont font(ToolUtils::create_portable_typeface(), 500);
font.setEdging(SkFont::Edging::kAlias);
canvas->drawString("I", 0, 100, font, paint);
}
};
// Replicate chrome layout test - switching between solid & gradient text
class ChromeGradTextGM2 : public skiagm::GM {
SkString onShortName() override { return SkString("chrome_gradtext2"); }
SkISize onISize() override { return {500, 480}; }
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
SkFont font(ToolUtils::create_portable_typeface());
font.setEdging(SkFont::Edging::kAlias);
paint.setStyle(SkPaint::kFill_Style);
canvas->drawString("Normal Fill Text", 0, 50, font, paint);
paint.setStyle(SkPaint::kStroke_Style);
canvas->drawString("Normal Stroke Text", 0, 100, font, paint);
// Minimal repro doesn't require AA, LCD, or a nondefault typeface
paint.setShader(make_chrome_solid());
paint.setStyle(SkPaint::kFill_Style);
canvas->drawString("Gradient Fill Text", 0, 150, font, paint);
paint.setStyle(SkPaint::kStroke_Style);
canvas->drawString("Gradient Stroke Text", 0, 200, font, paint);
}
};
} // namespace
DEF_GM( return new ChromeGradTextGM1; )
DEF_GM( return new ChromeGradTextGM2; )
DEF_SIMPLE_GM(gradtext, canvas, 500, 480) {
static constexpr float kTextSize = 26.0f;
SkFont font(ToolUtils::create_portable_typeface(), kTextSize);
canvas->drawRect({0, 0, 500, 240}, SkPaint());
canvas->translate(20.0f, kTextSize);
SkPaint paints[2];
paints[0].setShader(make_grad(80.0f));
paints[1].setShader(make_grad2(80.0f));
static const SkFont::Edging edgings[3] = {
SkFont::Edging::kAlias,
SkFont::Edging::kAntiAlias,
SkFont::Edging::kSubpixelAntiAlias,
};
for (int i = 0; i < 2; ++i) {
for (const SkPaint& paint : paints) {
for (SkFont::Edging edging : edgings) {
font.setEdging(edging);
canvas->drawString("When in the course of human events", 0, 0, font, paint);
canvas->translate(0, kTextSize * 4/3);
}
canvas->translate(0, kTextSize * 2/3);
}
}
}
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