| /* |
| * 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.h" |
| #include "SkCanvas.h" |
| #include "SkGradientShader.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(SkMin32(w, h)); |
| static const SkPoint kPts0[] = { { 0, 0 }, { s, s } }; |
| static const SkPoint kPts1[] = { { s/2, 0 }, { s/2, s } }; |
| static const SkScalar kPos[] = { 0, SK_Scalar1/2, SK_Scalar1 }; |
| static const SkColor kColors0[] = {0x80F00080, 0xF0F08000, 0x800080F0 }; |
| static const SkColor kColors1[] = {0xF08000F0, 0x8080F000, 0xF000F080 }; |
| |
| |
| SkPaint paint; |
| |
| paint.setShader(SkGradientShader::MakeLinear(kPts0, kColors0, kPos, |
| SK_ARRAY_COUNT(kColors0), SkShader::kClamp_TileMode)); |
| canvas.drawPaint(paint); |
| paint.setShader(SkGradientShader::MakeLinear(kPts1, kColors1, kPos, |
| SK_ARRAY_COUNT(kColors1), SkShader::kClamp_TileMode)); |
| canvas.drawPaint(paint); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| struct LabeledMatrix { |
| SkMatrix fMatrix; |
| const char* fLabel; |
| }; |
| |
| static const char kText[] = "B"; |
| static const int kTextLen = SK_ARRAY_COUNT(kText) - 1; |
| static const int kPointSize = 300; |
| |
| class ShaderText3GM : public GM { |
| public: |
| ShaderText3GM() { |
| this->setBGColor(sk_tool_utils::color_to_565(0xFFDDDDDD)); |
| } |
| |
| protected: |
| |
| SkString onShortName() override { |
| return SkString("shadertext3"); |
| } |
| |
| SkISize onISize() override{ return SkISize::Make(800, 1000); } |
| |
| void onOnceBeforeDraw() override { |
| makebm(&fBmp, kPointSize / 4, kPointSize / 4); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| |
| SkPaint bmpPaint; |
| bmpPaint.setAntiAlias(true); |
| bmpPaint.setFilterQuality(kLow_SkFilterQuality); |
| bmpPaint.setAlpha(0x80); |
| canvas->drawBitmap(fBmp, 5.f, 5.f, &bmpPaint); |
| |
| SkPaint outlinePaint; |
| outlinePaint.setAntiAlias(true); |
| sk_tool_utils::set_portable_typeface(&outlinePaint); |
| outlinePaint.setTextSize(SkIntToScalar(kPointSize)); |
| 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); |
| |
| static const SkShader::TileMode kTileModes[] = { |
| SkShader::kRepeat_TileMode, |
| SkShader::kMirror_TileMode, |
| }; |
| |
| // 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 < SK_ARRAY_COUNT(kTileModes); ++tm0) { |
| for (size_t tm1 = 0; tm1 < SK_ARRAY_COUNT(kTileModes); ++tm1) { |
| SkMatrix localM; |
| localM.setTranslate(5.f, 5.f); |
| localM.postRotate(20); |
| localM.postScale(1.15f, .85f); |
| |
| SkPaint fillPaint; |
| fillPaint.setAntiAlias(true); |
| sk_tool_utils::set_portable_typeface(&fillPaint); |
| fillPaint.setTextSize(SkIntToScalar(kPointSize)); |
| fillPaint.setFilterQuality(kLow_SkFilterQuality); |
| fillPaint.setShader(SkShader::MakeBitmapShader(fBmp, kTileModes[tm0], |
| kTileModes[tm1], &localM)); |
| |
| canvas->drawText(kText, kTextLen, 0, 0, fillPaint); |
| canvas->drawText(kText, kTextLen, 0, 0, outlinePaint); |
| SkScalar w = fillPaint.measureText(kText, kTextLen); |
| 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; |
| typedef GM INHERITED; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static GM* MyFactory(void*) { return new ShaderText3GM; } |
| static GMRegistry reg(MyFactory); |
| } |