xref: /aosp_15_r20/external/skia/docs/examples/Anti_Alias.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
1 // Copyright 2019 Google LLC.
2 // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3 #include "tools/fiddle/examples.h"
4 REG_FIDDLE(Anti_Alias, 512, 256, false, 0) {
draw(SkCanvas * canvas)5 void draw(SkCanvas* canvas) {
6     SkBitmap bitmap;
7     bitmap.allocN32Pixels(50, 50);
8     SkCanvas offscreen(bitmap);
9     SkPaint paint;
10     paint.setStyle(SkPaint::kStroke_Style);
11     paint.setStrokeWidth(10);
12     for (bool antialias : { false, true }) {
13         paint.setColor(antialias ? SK_ColorRED : SK_ColorBLUE);
14         paint.setAntiAlias(antialias);
15         bitmap.eraseColor(0);
16         offscreen.drawLine(5, 5, 15, 30, paint);
17         canvas->drawLine(5, 5, 15, 30, paint);
18         canvas->save();
19         canvas->scale(10, 10);
20         canvas->drawImage(bitmap.asImage(), antialias ? 12 : 0, 0);
21         canvas->restore();
22         canvas->translate(15, 0);
23     }
24 }
25 }  // END FIDDLE
26