docs/examples/Bitmap_pixmap.cpp

// 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 "tools/fiddle/examples.h"
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 = SkFont(fontMgr->matchFamilyStyle(nullptr, {}));
    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