/* * 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" // 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); } 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; 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); } 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; 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); } private: typedef GM INHERITED; }; ////////////////////////////////////////////////////////////////////////////// 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); } } }