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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 "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
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