skia2/docs/examples/Bitmap_pixmap.cpp

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// 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=7f972d742dd78d2500034d8867e9ef2f
REG_FIDDLE(Bitmap_pixmap, 256, 256, true, 0) {
void draw(SkCanvas* canvas) {
SkBitmap bitmap;
bitmap.allocPixels(SkImageInfo::MakeN32Premul(10, 11));
SkCanvas offscreen(bitmap);
offscreen.clear(SK_ColorWHITE);
SkPaint paint;
SkFont font;
font.setEdging(SkFont::Edging::kAlias);
offscreen.drawString("&", 0, 10, font, paint);
const SkPixmap& pixmap = bitmap.pixmap();
if (pixmap.addr()) {
SkPMColor pmWhite = *pixmap.addr32(0, 0);
for (int y = 0; y < pixmap.height(); ++y) {
for (int x = 0; x < pixmap.width(); ++x) {
SkDebugf("%c", *pixmap.addr32(x, y) == pmWhite ? '-' : 'x');
}
SkDebugf("\n");
}
}
}
} // END FIDDLE