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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 "samplecode/Sample.h"
- #include "include/core/SkCanvas.h"
- #include "include/core/SkColorFilter.h"
- #include "include/core/SkColorPriv.h"
- #include "include/core/SkGraphics.h"
- #include "include/core/SkPath.h"
- #include "include/core/SkRegion.h"
- #include "include/core/SkShader.h"
- #include "include/core/SkStream.h"
- #include "include/core/SkTextBlob.h"
- #include "include/core/SkTime.h"
- #include "include/core/SkTypeface.h"
- #include "include/effects/SkBlurMaskFilter.h"
- #include "include/effects/SkGradientShader.h"
- #include "include/utils/SkRandom.h"
- #include "modules/skshaper/include/SkShaper.h"
- #include "src/core/SkOSFile.h"
- #include "src/shaders/SkColorShader.h"
- #include "src/utils/SkUTF.h"
- static const char gText[] =
- "When in the Course of human events it becomes necessary for one people "
- "to dissolve the political bands which have connected them with another "
- "and to assume among the powers of the earth, the separate and equal "
- "station to which the Laws of Nature and of Nature's God entitle them, "
- "a decent respect to the opinions of mankind requires that they should "
- "declare the causes which impel them to the separation.";
- class TextBoxView : public Sample {
- public:
- TextBoxView() : fShaper(SkShaper::Make()) {}
- protected:
- SkString name() override { return SkString("TextBox"); }
- void drawTest(SkCanvas* canvas, SkScalar w, SkScalar h, SkColor fg, SkColor bg) {
- SkAutoCanvasRestore acr(canvas, true);
- canvas->clipRect(SkRect::MakeWH(w, h));
- canvas->drawColor(bg);
- SkScalar margin = 20;
- SkPaint paint;
- paint.setColor(fg);
- for (int i = 9; i < 24; i += 2) {
- SkTextBlobBuilderRunHandler builder(gText, { margin, margin });
- SkFont font(nullptr, SkIntToScalar(i));
- font.setEdging(SkFont::Edging::kSubpixelAntiAlias);
- fShaper->shape(gText, strlen(gText), font, true, w - margin, &builder);
- canvas->drawTextBlob(builder.makeBlob(), 0, 0, paint);
- canvas->translate(0, builder.endPoint().y());
- }
- }
- void onDrawContent(SkCanvas* canvas) override {
- SkScalar width = this->width() / 3;
- drawTest(canvas, width, this->height(), SK_ColorBLACK, SK_ColorWHITE);
- canvas->translate(width, 0);
- drawTest(canvas, width, this->height(), SK_ColorWHITE, SK_ColorBLACK);
- canvas->translate(width, 0);
- drawTest(canvas, width, this->height()/2, SK_ColorGRAY, SK_ColorWHITE);
- canvas->translate(0, this->height()/2);
- drawTest(canvas, width, this->height()/2, SK_ColorGRAY, SK_ColorBLACK);
- }
- private:
- std::unique_ptr<SkShaper> fShaper;
- typedef Sample INHERITED;
- };
- //////////////////////////////////////////////////////////////////////////////
- DEF_SAMPLE( return new TextBoxView(); )
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