| /* |
| * 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/SkMatrix.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| #include "include/core/SkTypes.h" |
| #include "tools/DecodeUtils.h" |
| #include "tools/Resources.h" |
| #include "tools/ToolUtils.h" |
| |
| namespace { |
| static SkSize computeSize(const SkBitmap& bm, const SkMatrix& mat) { |
| SkRect bounds = SkRect::MakeWH(SkIntToScalar(bm.width()), |
| SkIntToScalar(bm.height())); |
| mat.mapRect(&bounds); |
| return SkSize::Make(bounds.width(), bounds.height()); |
| } |
| |
| static void draw_cell(SkCanvas* canvas, const SkBitmap& bm, const SkMatrix& mat, SkScalar dx, |
| const SkSamplingOptions& sampling) { |
| SkAutoCanvasRestore acr(canvas, true); |
| |
| canvas->translate(dx, 0); |
| canvas->concat(mat); |
| canvas->drawImage(bm.asImage(), 0, 0, sampling); |
| } |
| |
| static void draw_row(SkCanvas* canvas, const SkBitmap& bm, const SkMatrix& mat, SkScalar dx) { |
| draw_cell(canvas, bm, mat, 0 * dx, SkSamplingOptions()); |
| draw_cell(canvas, bm, mat, 1 * dx, SkSamplingOptions(SkFilterMode::kLinear)); |
| draw_cell(canvas, bm, mat, 2 * dx, SkSamplingOptions(SkFilterMode::kLinear, |
| SkMipmapMode::kLinear)); |
| draw_cell(canvas, bm, mat, 3 * dx, SkSamplingOptions(SkCubicResampler::Mitchell())); |
| } |
| |
| class FilterIndiaBoxGM : public skiagm::GM { |
| SkBitmap fBM; |
| SkMatrix fMatrix[2]; |
| |
| void onOnceBeforeDraw() override { |
| constexpr char kResource[] = "images/box.gif"; |
| if (!ToolUtils::GetResourceAsBitmap(kResource, &fBM)) { |
| fBM.allocN32Pixels(1, 1); |
| fBM.eraseARGB(255, 255, 0 , 0); // red == bad |
| } |
| fBM.setImmutable(); |
| |
| SkScalar cx = SkScalarHalf(fBM.width()); |
| SkScalar cy = SkScalarHalf(fBM.height()); |
| |
| float vertScale = 30.0f/55.0f; |
| float horizScale = 150.0f/200.0f; |
| |
| fMatrix[0].setScale(horizScale, vertScale); |
| fMatrix[1].setRotate(30, cx, cy); fMatrix[1].postScale(horizScale, vertScale); |
| } |
| |
| SkString getName() const override { return SkString("filterindiabox"); } |
| |
| SkISize getISize() override { return {680, 130}; } |
| |
| void onDraw(SkCanvas* canvas) override { |
| canvas->translate(10, 10); |
| for (size_t i = 0; i < std::size(fMatrix); ++i) { |
| SkSize size = computeSize(fBM, fMatrix[i]); |
| size.fWidth += 20; |
| size.fHeight += 20; |
| |
| draw_row(canvas, fBM, fMatrix[i], size.fWidth); |
| canvas->translate(0, size.fHeight); |
| } |
| } |
| }; |
| } // namespace |
| |
| DEF_GM( return new FilterIndiaBoxGM(); ) |