| /* |
| * 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/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkPoint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkSurface.h" |
| #include "include/effects/SkGradientShader.h" |
| #include "tools/Resources.h" |
| |
| |
| // This tests using clip shader and then changing the canvas matrix before drawing. It also verifies |
| // that we don't incorrectly disable linear filtering of a clip image shader. |
| DEF_SIMPLE_GM(clipshadermatrix, canvas, 145, 128) { |
| auto clipSurface = SkSurfaces::Raster(SkImageInfo::MakeA8({70, 60})); |
| // Hard edged oval clip |
| clipSurface->getCanvas()->drawOval(SkRect::MakeXYWH(0, 10, 64, 44), SkPaint{}); |
| auto clipShader = clipSurface->makeImageSnapshot()->makeShader( |
| SkTileMode::kDecal, SkTileMode::kDecal, SkFilterMode::kLinear); |
| |
| canvas->translate(5, 0); |
| for (auto tx : {0.f, 68.5f}) { |
| for (auto ty : {0.f, 66.5f}) { |
| canvas->save(); |
| |
| canvas->translate(tx, ty); |
| canvas->clipShader(clipShader); |
| canvas->translate(-tx, -ty); |
| |
| SkMatrix m; |
| m.setSkew(0.03f, 0.f); |
| m.setPerspY( 0.0007f); |
| m.setPerspX(-0.002f); |
| m.setScaleX(1.2f); m.setScaleY(0.8f); |
| m.preRotate(30.f); |
| canvas->concat(m); |
| |
| SkPoint center = {64, 64}; |
| SkAssertResult(m.invert(&m)); |
| center = m.mapPoint(center); |
| SkColor colors[] {SK_ColorYELLOW, SK_ColorGREEN, SK_ColorBLUE, |
| SK_ColorMAGENTA, SK_ColorCYAN , SK_ColorYELLOW}; |
| auto gradient = SkGradientShader::MakeRadial( |
| center, |
| /*radius=*/32.f, |
| colors, |
| /*pos=*/nullptr, |
| std::size(colors), |
| SkTileMode::kMirror, |
| /*flags=*/0, |
| /*localMatrix=*/nullptr); |
| |
| SkPaint paint; |
| paint.setShader(std::move(gradient)); |
| canvas->drawPaint(paint); |
| |
| canvas->restore(); |
| } |
| } |
| } |