blob: 1f8bff318f3b3b86912bd91d61f84fb388318e5b [file] [log] [blame]
// 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"
// HASH=dd92db963af190e849894038f39b598a
REG_FIDDLE(Canvas_copy_const_SkBitmap, 256, 256, true, 0) {
void draw(SkCanvas* ) {
SkBitmap bitmap;
// create a bitmap 5 wide and 11 high
bitmap.allocPixels(SkImageInfo::MakeN32Premul(5, 11));
SkCanvas canvas(bitmap);
canvas.clear(SK_ColorWHITE); // white is Unpremultiplied, in ARGB order
SkPixmap pixmap; // provides guaranteed access to the drawn pixels
if (!canvas.peekPixels(&pixmap)) {
SkDebugf("peekPixels should never fail.\n");
}
const SkPMColor* pixels = pixmap.addr32(); // points to top-left of bitmap
SkPMColor pmWhite = pixels[0]; // the Premultiplied format may vary
SkPaint paint; // by default, draws black, 12 point text
SkFont font;
canvas.drawString("!", 1, 10, font, paint); // 1 char at baseline (1, 10)
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