xref: /aosp_15_r20/external/skia/docs/examples/ImageInfo_MakeA8.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(ImageInfo_MakeA8, 256, 64, false, 0) {
draw(SkCanvas * canvas)5 void draw(SkCanvas* canvas) {
6     uint8_t pixels[][8] = { { 0x00, 0x00, 0x3f, 0x00, 0x00, 0x00, 0x00, 0x00},
7                             { 0x00, 0x7f, 0xff, 0x3f, 0x3f, 0x7f, 0x3f, 0x00},
8                             { 0x3f, 0xff, 0x7f, 0x00, 0x7f, 0xff, 0x7f, 0x00},
9                             { 0x00, 0x3f, 0x00, 0x00, 0x3f, 0x7f, 0x3f, 0x00},
10                             { 0x3f, 0x7f, 0x7f, 0x3f, 0x00, 0x00, 0x00, 0x00},
11                             { 0x7f, 0xff, 0xff, 0x7f, 0x00, 0x3f, 0x7f, 0x3f},
12                             { 0x7f, 0xff, 0xff, 0x7f, 0x00, 0x7f, 0xff, 0x7f},
13                             { 0x3f, 0x7f, 0x7f, 0x3f, 0x00, 0x3f, 0x7f, 0x3f} };
14     SkBitmap bitmap;
15     bitmap.installPixels(SkImageInfo::MakeA8(8, 8),
16             (void*) pixels, sizeof(pixels[0]));
17     SkPaint paint;
18     canvas->scale(4, 4);
19     for (auto color : { SK_ColorRED, SK_ColorBLUE, 0xFF007F00} ) {
20         paint.setColor(color);
21         canvas->drawImage(bitmap.asImage(), 0, 0, SkSamplingOptions(), &paint);
22         canvas->translate(12, 0);
23     }
24 }
25 }  // END FIDDLE
26