| // Copyright 2020 Google LLC. |
| // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file. |
| #include "tools/fiddle/examples.h" |
| REG_FIDDLE(skpaint_matrix_color_filter, 256, 128, false, 3) { |
| void f(SkCanvas* c, SkScalar x, SkScalar y, SkScalar colorMatrix[20]) { |
| SkPaint paint; |
| paint.setColorFilter(SkColorFilters::Matrix(colorMatrix)); |
| c->drawImage(image, x, y, &paint); |
| } |
| void draw(SkCanvas* c) { |
| c->scale(0.25, 0.25); |
| SkScalar colorMatrix1[20] = { |
| 0, 1, 0, 0, 0, |
| 0, 0, 1, 0, 0, |
| 1, 0, 0, 0, 0, |
| 0, 0, 0, 1, 0}; |
| f(c, 0, 0, colorMatrix1); |
| |
| SkScalar grayscale[20] = { |
| 0.21f, 0.72f, 0.07f, 0.0f, 0.0f, |
| 0.21f, 0.72f, 0.07f, 0.0f, 0.0f, |
| 0.21f, 0.72f, 0.07f, 0.0f, 0.0f, |
| 0.0f, 0.0f, 0.0f, 1.0f, 0.0f}; |
| f(c, 512, 0, grayscale); |
| } |
| } // END FIDDLE |