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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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