xref: /aosp_15_r20/external/skia/docs/examples/Canvas_getDeviceClipBounds.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(Canvas_getDeviceClipBounds, 256, 256, true, 0) {
draw(SkCanvas * canvas)5 void draw(SkCanvas* canvas) {
6     SkCanvas device(256, 256);
7     canvas = &device;
8     SkIRect bounds = canvas->getDeviceClipBounds();
9     SkDebugf("left:%d  top:%d  right:%d  bottom:%d\n",
10             bounds.fLeft, bounds.fTop, bounds.fRight, bounds.fBottom);
11     SkPoint clipPoints[]  = {{30, 130}, {120, 130}, {120, 230} };
12     SkPath clipPath;
13     clipPath.addPoly(clipPoints, std::size(clipPoints), true);
14     canvas->save();
15     canvas->clipPath(clipPath);
16     bounds = canvas->getDeviceClipBounds();
17     SkDebugf("left:%d  top:%d  right:%d  bottom:%d\n",
18             bounds.fLeft, bounds.fTop, bounds.fRight, bounds.fBottom);
19     canvas->restore();
20     canvas->scale(1.f/2, 1.f/2);
21     canvas->clipPath(clipPath);
22     bounds = canvas->getDeviceClipBounds();
23     SkDebugf("left:%d  top:%d  right:%d  bottom:%d\n",
24             bounds.fLeft, bounds.fTop, bounds.fRight, bounds.fBottom);
25 }
26 }  // END FIDDLE
27