| /* |
| * 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" |
| #include "tools/fonts/FontToolUtils.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, std::size(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, std::size(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 getName() const override { return SkString("chrome_gradtext1"); } |
| |
| SkISize getISize() 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::DefaultPortableTypeface(), 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 getName() const override { return SkString("chrome_gradtext2"); } |
| |
| SkISize getISize() override { return {500, 480}; } |
| |
| void onDraw(SkCanvas* canvas) override { |
| SkPaint paint; |
| SkFont font = ToolUtils::DefaultPortableFont(); |
| 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::DefaultPortableTypeface(), 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); |
| } |
| } |
| } |