| /* |
| * 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/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkImageFilter.h" |
| #include "include/core/SkMatrix.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| #include "include/core/SkTypes.h" |
| #include "include/effects/SkImageFilters.h" |
| |
| #define RESIZE_FACTOR_X SkIntToScalar(2) |
| #define RESIZE_FACTOR_Y SkIntToScalar(5) |
| |
| namespace skiagm { |
| |
| class ImageFiltersStrokedGM : public GM { |
| public: |
| ImageFiltersStrokedGM() { |
| this->setBGColor(0x00000000); |
| } |
| |
| protected: |
| SkString getName() const override { return SkString("imagefiltersstroked"); } |
| |
| SkISize getISize() override { return SkISize::Make(860, 500); } |
| |
| static void draw_circle(SkCanvas* canvas, const SkRect& r, const SkPaint& paint) { |
| canvas->drawCircle(r.centerX(), r.centerY(), |
| r.width() * 2 / 5, paint); |
| } |
| |
| static void draw_line(SkCanvas* canvas, const SkRect& r, const SkPaint& paint) { |
| canvas->drawLine(r.fLeft, r.fBottom, r.fRight, r.fTop, paint); |
| } |
| |
| static void draw_rect(SkCanvas* canvas, const SkRect& r, const SkPaint& paint) { |
| canvas->drawRect(r, paint); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| void (*drawProc[])(SkCanvas*, const SkRect&, const SkPaint&) = { |
| draw_line, draw_rect, draw_circle, |
| }; |
| |
| canvas->clear(SK_ColorBLACK); |
| |
| SkMatrix resizeMatrix; |
| resizeMatrix.setScale(RESIZE_FACTOR_X, RESIZE_FACTOR_Y); |
| |
| sk_sp<SkImageFilter> filters[] = { |
| SkImageFilters::Blur(5, 5, nullptr), |
| SkImageFilters::DropShadow(10, 10, 3, 3, SK_ColorGREEN, nullptr), |
| SkImageFilters::Offset(-16, 32, nullptr), |
| SkImageFilters::MatrixTransform(resizeMatrix, SkSamplingOptions(), nullptr), |
| }; |
| |
| SkRect r = SkRect::MakeWH(64, 64); |
| SkScalar margin = 32; |
| SkPaint paint; |
| paint.setColor(SK_ColorWHITE); |
| paint.setAntiAlias(true); |
| paint.setStrokeWidth(10); |
| paint.setStyle(SkPaint::kStroke_Style); |
| |
| for (size_t i = 0; i < std::size(drawProc); ++i) { |
| canvas->translate(0, margin); |
| canvas->save(); |
| for (size_t j = 0; j < std::size(filters); ++j) { |
| canvas->translate(margin, 0); |
| canvas->save(); |
| if (2 == j) { |
| canvas->translate(16, -32); |
| } else if (3 == j) { |
| canvas->scale(SkScalarInvert(RESIZE_FACTOR_X), |
| SkScalarInvert(RESIZE_FACTOR_Y)); |
| } |
| paint.setImageFilter(filters[j]); |
| drawProc[i](canvas, r, paint); |
| canvas->restore(); |
| canvas->translate(r.width() + margin, 0); |
| } |
| canvas->restore(); |
| canvas->translate(0, r.height()); |
| } |
| } |
| |
| private: |
| using INHERITED = GM; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_GM(return new ImageFiltersStrokedGM;) |
| |
| } // namespace skiagm |