132 lines
4.4 KiB
C++
132 lines
4.4 KiB
C++
/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm/gm.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkFont.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkPoint.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkShader.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/core/SkTileMode.h"
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#include "include/core/SkTypeface.h"
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#include "include/core/SkTypes.h"
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#include "include/effects/SkGradientShader.h"
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#include "tools/ToolUtils.h"
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namespace {
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// test shader w/ transparency
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static sk_sp<SkShader> make_grad(SkScalar width) {
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SkColor colors[] = { SK_ColorRED, 0x0000FF00, SK_ColorBLUE };
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SkPoint pts[] = { { 0, 0 }, { width, 0 } };
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return SkGradientShader::MakeLinear(pts, colors, nullptr, SK_ARRAY_COUNT(colors),
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SkTileMode::kMirror);
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}
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// test opaque shader
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static sk_sp<SkShader> make_grad2(SkScalar width) {
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SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE };
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SkPoint pts[] = { { 0, 0 }, { width, 0 } };
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return SkGradientShader::MakeLinear(pts, colors, nullptr, SK_ARRAY_COUNT(colors),
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SkTileMode::kMirror);
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}
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static sk_sp<SkShader> make_chrome_solid() {
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SkColor colors[] = { SK_ColorGREEN, SK_ColorGREEN };
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SkPoint pts[] = { { 0, 0 }, { 1, 0 } };
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return SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkTileMode::kClamp);
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}
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// Replicate chrome layout test - clipped pathed gradient-shaded text
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class ChromeGradTextGM1 : public skiagm::GM {
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SkString onShortName() override { return SkString("chrome_gradtext1"); }
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SkISize onISize() override { return {500, 480}; }
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void onDraw(SkCanvas* canvas) override {
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SkPaint paint;
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SkRect r = SkRect::MakeWH(SkIntToScalar(100), SkIntToScalar(100));
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canvas->clipRect(r);
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paint.setColor(SK_ColorRED);
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canvas->drawRect(r, paint);
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// Minimal repro doesn't require AA, LCD, or a nondefault typeface
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paint.setShader(make_chrome_solid());
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SkFont font(ToolUtils::create_portable_typeface(), 500);
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font.setEdging(SkFont::Edging::kAlias);
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canvas->drawString("I", 0, 100, font, paint);
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}
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};
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// Replicate chrome layout test - switching between solid & gradient text
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class ChromeGradTextGM2 : public skiagm::GM {
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SkString onShortName() override { return SkString("chrome_gradtext2"); }
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SkISize onISize() override { return {500, 480}; }
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void onDraw(SkCanvas* canvas) override {
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SkPaint paint;
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SkFont font(ToolUtils::create_portable_typeface());
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font.setEdging(SkFont::Edging::kAlias);
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paint.setStyle(SkPaint::kFill_Style);
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canvas->drawString("Normal Fill Text", 0, 50, font, paint);
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paint.setStyle(SkPaint::kStroke_Style);
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canvas->drawString("Normal Stroke Text", 0, 100, font, paint);
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// Minimal repro doesn't require AA, LCD, or a nondefault typeface
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paint.setShader(make_chrome_solid());
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paint.setStyle(SkPaint::kFill_Style);
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canvas->drawString("Gradient Fill Text", 0, 150, font, paint);
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paint.setStyle(SkPaint::kStroke_Style);
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canvas->drawString("Gradient Stroke Text", 0, 200, font, paint);
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}
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};
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} // namespace
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DEF_GM( return new ChromeGradTextGM1; )
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DEF_GM( return new ChromeGradTextGM2; )
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DEF_SIMPLE_GM(gradtext, canvas, 500, 480) {
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static constexpr float kTextSize = 26.0f;
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SkFont font(ToolUtils::create_portable_typeface(), kTextSize);
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canvas->drawRect({0, 0, 500, 240}, SkPaint());
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canvas->translate(20.0f, kTextSize);
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SkPaint paints[2];
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paints[0].setShader(make_grad(80.0f));
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paints[1].setShader(make_grad2(80.0f));
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static const SkFont::Edging edgings[3] = {
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SkFont::Edging::kAlias,
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SkFont::Edging::kAntiAlias,
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SkFont::Edging::kSubpixelAntiAlias,
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};
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for (int i = 0; i < 2; ++i) {
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for (const SkPaint& paint : paints) {
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for (SkFont::Edging edging : edgings) {
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font.setEdging(edging);
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canvas->drawString("When in the course of human events", 0, 0, font, paint);
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canvas->translate(0, kTextSize * 4/3);
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}
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canvas->translate(0, kTextSize * 2/3);
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}
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}
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}
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