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 // HASH=5df49d1f4da37275a1f10ef7f1a749f0
5 REG_FIDDLE(Canvas_SrcRectConstraint, 256, 64, false, 0) {
draw(SkCanvas * canvas)6 void draw(SkCanvas* canvas) {
7 SkBitmap redBorder;
8 redBorder.allocPixels(SkImageInfo::MakeN32Premul(4, 4));
9 SkCanvas checkRed(redBorder);
10 checkRed.clear(SK_ColorRED);
11 uint32_t checkers[][2] = { { SK_ColorBLACK, SK_ColorWHITE },
12 { SK_ColorWHITE, SK_ColorBLACK } };
13 checkRed.writePixels(
14 SkImageInfo::MakeN32Premul(2, 2), (void*) checkers, sizeof(checkers[0]), 1, 1);
15 canvas->scale(16, 16);
16 canvas->drawImage(redBorder.asImage(), 0, 0);
17 canvas->resetMatrix();
18 sk_sp<SkImage> image = redBorder.asImage();
19 for (auto constraint : { SkCanvas::kStrict_SrcRectConstraint,
20 SkCanvas::kFast_SrcRectConstraint } ) {
21 canvas->translate(80, 0);
22 canvas->drawImageRect(image.get(), SkRect::MakeLTRB(1, 1, 3, 3),
23 SkRect::MakeLTRB(16, 16, 48, 48),
24 SkSamplingOptions(SkFilterMode::kLinear), nullptr, constraint);
25 }
26 }
27 } // END FIDDLE
28