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
5REG_FIDDLE(Canvas_SrcRectConstraint, 256, 64, false, 0) {
6void 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