| /* |
| * 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/SkBitmap.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkFont.h" |
| #include "include/core/SkFontTypes.h" |
| #include "include/core/SkMatrix.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkPoint.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" |
| |
| #include <string.h> |
| |
| namespace skiagm { |
| |
| static void makebm(SkBitmap* bm, int w, int h) { |
| bm->allocN32Pixels(w, h); |
| bm->eraseColor(SK_ColorTRANSPARENT); |
| |
| SkCanvas canvas(*bm); |
| SkScalar s = SkIntToScalar(std::min(w, h)); |
| const SkPoint kPts0[] = { { 0, 0 }, { s, s } }; |
| const SkPoint kPts1[] = { { s/2, 0 }, { s/2, s } }; |
| const SkScalar kPos[] = { 0, SK_Scalar1/2, SK_Scalar1 }; |
| const SkColor kColors0[] = {0x80F00080, 0xF0F08000, 0x800080F0 }; |
| const SkColor kColors1[] = {0xF08000F0, 0x8080F000, 0xF000F080 }; |
| |
| |
| SkPaint paint; |
| |
| paint.setShader(SkGradientShader::MakeLinear(kPts0, kColors0, kPos, |
| std::size(kColors0), SkTileMode::kClamp)); |
| canvas.drawPaint(paint); |
| paint.setShader(SkGradientShader::MakeLinear(kPts1, kColors1, kPos, |
| std::size(kColors1), SkTileMode::kClamp)); |
| canvas.drawPaint(paint); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| struct LabeledMatrix { |
| SkMatrix fMatrix; |
| const char* fLabel; |
| }; |
| |
| constexpr int kPointSize = 300; |
| |
| class ShaderText3GM : public GM { |
| public: |
| ShaderText3GM() { |
| this->setBGColor(0xFFDDDDDD); |
| } |
| |
| protected: |
| SkString getName() const override { return SkString("shadertext3"); } |
| |
| SkISize getISize() override { return SkISize::Make(820, 930); } |
| |
| void onOnceBeforeDraw() override { |
| makebm(&fBmp, kPointSize / 4, kPointSize / 4); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| |
| SkPaint bmpPaint; |
| bmpPaint.setAntiAlias(true); |
| bmpPaint.setAlphaf(0.5f); |
| SkSamplingOptions sampling(SkFilterMode::kLinear); |
| |
| canvas->drawImage(fBmp.asImage(), 5.f, 5.f, sampling, &bmpPaint); |
| |
| SkFont font(ToolUtils::DefaultPortableTypeface(), SkIntToScalar(kPointSize)); |
| SkPaint outlinePaint; |
| outlinePaint.setStyle(SkPaint::kStroke_Style); |
| outlinePaint.setStrokeWidth(0.f); |
| |
| canvas->translate(15.f, 15.f); |
| |
| // draw glyphs scaled up |
| canvas->scale(2.f, 2.f); |
| |
| constexpr SkTileMode kTileModes[] = { |
| SkTileMode::kRepeat, |
| SkTileMode::kMirror, |
| }; |
| |
| // position the baseline of the first run |
| canvas->translate(0.f, 0.75f * kPointSize); |
| |
| canvas->save(); |
| int i = 0; |
| for (size_t tm0 = 0; tm0 < std::size(kTileModes); ++tm0) { |
| for (size_t tm1 = 0; tm1 < std::size(kTileModes); ++tm1) { |
| SkMatrix localM; |
| localM.setTranslate(5.f, 5.f); |
| localM.postRotate(20); |
| localM.postScale(1.15f, .85f); |
| |
| SkPaint fillPaint; |
| fillPaint.setAntiAlias(true); |
| fillPaint.setShader(fBmp.makeShader(kTileModes[tm0], kTileModes[tm1], |
| sampling, localM)); |
| |
| constexpr char kText[] = "B"; |
| canvas->drawString(kText, 0, 0, font, fillPaint); |
| canvas->drawString(kText, 0, 0, font, outlinePaint); |
| SkScalar w = font.measureText(kText, strlen(kText), SkTextEncoding::kUTF8); |
| canvas->translate(w + 10.f, 0.f); |
| ++i; |
| if (!(i % 2)) { |
| canvas->restore(); |
| canvas->translate(0, 0.75f * kPointSize); |
| canvas->save(); |
| } |
| } |
| } |
| canvas->restore(); |
| } |
| |
| private: |
| SkBitmap fBmp; |
| using INHERITED = GM; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_GM( return new ShaderText3GM; ) |
| } // namespace skiagm |