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 // HASH=94ad244056dc80ecd87daae004266334
5 REG_FIDDLE(Pixmap_getColor, 256, 256, true, 0) {
draw(SkCanvas * canvas)6 void draw(SkCanvas* canvas) {
7 const int w = 4;
8 const int h = 4;
9 std::vector<SkPMColor> storage;
10 storage.resize(w * h);
11 SkDebugf("Premultiplied:\n");
12 for (int y = 0; y < h; ++y) {
13 SkDebugf("(0, %d) ", y);
14 for (int x = 0; x < w; ++x) {
15 int a = 0xFF * (x + y) / (w - 1 + h - 1);
16 storage[x + y * w] = SkPackARGB32(a, a * x / (w - 1), a * y / (h - 1), a);
17 SkDebugf("0x%08x%c", storage[x + y * w], x == w - 1 ? '\n' : ' ');
18 }
19 }
20 SkPixmap pixmap(SkImageInfo::MakeN32(w, h, kPremul_SkAlphaType), &storage.front(), w * 4);
21 SkDebugf("Unpremultiplied:\n");
22 for (int y = 0; y < h; ++y) {
23 SkDebugf("(0, %d) ", y);
24 for (int x = 0; x < w; ++x) {
25 SkDebugf("0x%08x%c", pixmap.getColor(x, y), x == w - 1 ? '\n' : ' ');
26 }
27 }
28 }
29 } // END FIDDLE
30