Hal Canary | 6c8422c | 2020-01-10 15:22:09 -0500 | [diff] [blame] | 1 | // Copyright 2020 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(SkImage_to_PPM_ascii, 256, 256, true, 4) { |
| 5 | void dump_txt(const SkData* data, const char* name) { |
| 6 | if (data) { |
| 7 | SkDebugf("\ncat > %s << EOF\n", name); |
| 8 | size_t s = data->size(); |
| 9 | const char* d = (const char*)data->bytes(); |
| 10 | while (s > 0) { |
| 11 | int l = (int)SkTMin(s, (size_t)1024); |
| 12 | SkDebugf("%.*s", l, d); |
| 13 | s -= l; |
| 14 | d += l; |
| 15 | } |
| 16 | SkDebugf("\nEOF\n\n"); |
| 17 | } |
| 18 | } |
| 19 | |
| 20 | sk_sp<SkData> Encode_PPM_A(const SkPixmap& src) { |
| 21 | if (src.width() <= 0 || src.height() <= 0 || !src.addr() || |
| 22 | src.colorType() == kUnknown_SkColorType) { |
| 23 | return nullptr; |
| 24 | } |
| 25 | SkDynamicMemoryWStream buf; |
| 26 | SkString s = SkStringPrintf("P3\n%d %d\n255\n", src.width(), src.height()); |
| 27 | buf.write(s.c_str(), s.size()); |
| 28 | for (int y = 0; y < src.height(); ++y) { |
| 29 | for (int x = 0; x < src.height(); ++x) { |
| 30 | char buffer[13]; |
| 31 | SkColor c = src.getColor(x, y); |
| 32 | int n = snprintf(buffer, sizeof(buffer), "%d %d %d\n", SkColorGetR(c), |
| 33 | SkColorGetG(c), SkColorGetB(c)); |
| 34 | if (n < 6 || n + 1 > (int)sizeof(buffer)) { |
| 35 | return nullptr; |
| 36 | } |
| 37 | buf.write(buffer, n); |
| 38 | } |
| 39 | } |
| 40 | return buf.detachAsData(); |
| 41 | } |
| 42 | |
| 43 | SkBitmap ToBitmap(SkImage * img) { |
| 44 | SkBitmap bitmap; |
| 45 | (void)img->asLegacyBitmap(&bitmap, SkImage::kRO_LegacyBitmapMode); |
| 46 | return bitmap; |
| 47 | } |
| 48 | |
| 49 | void draw(SkCanvas*) { |
| 50 | SkBitmap bitmap = ToBitmap(image.get()); |
| 51 | sk_sp<SkData> data = Encode_PPM_A(bitmap.pixmap()); |
| 52 | dump_txt(data.get(), "fooa.ppm"); |
| 53 | } |
| 54 | } // END FIDDLE |