| /* |
| * Copyright 2015 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/SkFont.h" |
| #include "include/core/SkMatrix.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkRect.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 "tools/ToolUtils.h" |
| #include "tools/fonts/FontToolUtils.h" |
| |
| // Inspired by svg/as-border-image/svg-as-border-image.html. Draws a four-color checker board bitmap |
| // such that it is stretched and repeat tiled with different filter qualities. It is testing whether |
| // the bmp filter respects the repeat mode at the tile seams. |
| class BmpFilterQualityRepeat : public skiagm::GM { |
| public: |
| BmpFilterQualityRepeat() { this->setBGColor(ToolUtils::color_to_565(0xFFCCBBAA)); } |
| |
| protected: |
| |
| void onOnceBeforeDraw() override { |
| fBmp.allocN32Pixels(40, 40, true); |
| SkCanvas canvas(fBmp); |
| SkBitmap colorBmp; |
| colorBmp.allocN32Pixels(20, 20, true); |
| colorBmp.eraseColor(0xFFFF0000); |
| canvas.drawImage(colorBmp.asImage(), 0, 0); |
| colorBmp.eraseColor(ToolUtils::color_to_565(0xFF008200)); |
| canvas.drawImage(colorBmp.asImage(), 20, 0); |
| colorBmp.eraseColor(ToolUtils::color_to_565(0xFFFF9000)); |
| canvas.drawImage(colorBmp.asImage(), 0, 20); |
| colorBmp.eraseColor(ToolUtils::color_to_565(0xFF2000FF)); |
| canvas.drawImage(colorBmp.asImage(), 20, 20); |
| } |
| |
| SkString getName() const override { return SkString("bmp_filter_quality_repeat"); } |
| |
| SkISize getISize() override { return SkISize::Make(1000, 400); } |
| |
| void onDraw(SkCanvas* canvas) override { |
| this->drawAll(canvas, 2.5f); |
| canvas->translate(0, 250); |
| canvas->scale(0.5, 0.5); |
| this->drawAll(canvas, 1); |
| } |
| |
| private: |
| void drawAll(SkCanvas* canvas, SkScalar scaleX) const { |
| SkRect rect = SkRect::MakeLTRB(20, 60, 220, 210); |
| SkMatrix lm = SkMatrix::I(); |
| lm.setScaleX(scaleX); |
| lm.setTranslateX(423); |
| lm.setTranslateY(330); |
| |
| SkPaint textPaint; |
| textPaint.setAntiAlias(true); |
| |
| SkPaint bmpPaint(textPaint); |
| |
| SkFont font = ToolUtils::DefaultPortableFont(); |
| |
| SkAutoCanvasRestore acr(canvas, true); |
| |
| const struct { |
| const char* name; |
| SkSamplingOptions sampling; |
| } recs[] = { |
| { "none", SkSamplingOptions(SkFilterMode::kNearest) }, |
| { "low", SkSamplingOptions(SkFilterMode::kLinear) }, |
| { "medium", SkSamplingOptions(SkFilterMode::kLinear, SkMipmapMode::kLinear) }, |
| { "high", SkSamplingOptions(SkCubicResampler::Mitchell()) }, |
| }; |
| |
| for (const auto& rec : recs) { |
| constexpr SkTileMode kTM = SkTileMode::kRepeat; |
| bmpPaint.setShader(fBmp.makeShader(kTM, kTM, rec.sampling, lm)); |
| canvas->drawRect(rect, bmpPaint); |
| canvas->drawString(rec.name, 20, 40, font, textPaint); |
| canvas->translate(250, 0); |
| } |
| |
| } |
| |
| SkBitmap fBmp; |
| |
| using INHERITED = skiagm::GM; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_GM(return new BmpFilterQualityRepeat;) |