xref: /aosp_15_r20/external/skia/docs/examples/Shader_Methods_b.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
1 // Copyright 2019 Google LLC.
2 // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3 #include "tools/fiddle/examples.h"
4 REG_FIDDLE(Shader_Methods_b, 256, 256, false, 0) {
draw(SkCanvas * canvas)5 void draw(SkCanvas* canvas) {
6    SkPaint paint;
7    SkBitmap bitmap;
8    bitmap.setInfo(SkImageInfo::MakeA8(5, 1), 5);  // bitmap only contains alpha
9    uint8_t pixels[5] = { 0x22, 0x55, 0x88, 0xBB, 0xFF };
10    bitmap.setPixels(pixels);
11    paint.setShader(bitmap.makeShader(SkTileMode::kMirror, SkTileMode::kMirror,
12                                      SkSamplingOptions()));
13    for (SkColor c : { SK_ColorRED, SK_ColorBLUE, SK_ColorGREEN } ) {
14        paint.setColor(c);  // all components in color affect shader
15        canvas->drawCircle(50, 50, 50, paint);
16        canvas->translate(70, 70);
17    }
18 }
19 }  // END FIDDLE
20