skia2/docs/examples/Bitmap_peekPixels.cpp
Hal Canary d88c2e8e09 Docs: rename examples files to match names
Change-Id: I9a6b2780cfdd91cdd16d5a08eb9ba1214492cb7e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/201982
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
2019-03-19 18:49:22 +00:00

27 lines
916 B
C++

// Copyright 2019 Google LLC.
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
#include "fiddle/examples.h"
// HASH=0cc2c6a0dffa61a88711534bd3d43b40
REG_FIDDLE(Bitmap_peekPixels, 256, 256, true, 0) {
void draw(SkCanvas* canvas) {
SkBitmap bitmap;
bitmap.allocPixels(SkImageInfo::MakeN32Premul(6, 11));
SkCanvas offscreen(bitmap);
offscreen.clear(SK_ColorWHITE);
SkPaint paint;
SkFont font;
offscreen.drawString("?", 0, 10, font, paint);
SkPixmap pixmap;
if (bitmap.peekPixels(&pixmap)) {
const SkPMColor* pixels = pixmap.addr32();
SkPMColor pmWhite = pixels[0];
for (int y = 0; y < bitmap.height(); ++y) {
for (int x = 0; x < bitmap.width(); ++x) {
SkDebugf("%c", *pixels++ == pmWhite ? '-' : 'x');
}
SkDebugf("\n");
}
}
}
} // END FIDDLE