29 lines
1.2 KiB
C++
29 lines
1.2 KiB
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 "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
|