skia2/docs/examples/Canvas_drawImageRect_4.cpp
Mike Reed b339d051e0 pass sampling to drawImage
Bug: skia:7650
Change-Id: I0fa4c5f3fb350705f78ee91f4bdfb4edd83d0ed9
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/361360
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
2021-01-28 17:56:52 +00:00

23 lines
953 B
C++

// 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=d4b35a9d24c32c042bd1f529b8de3c0d
REG_FIDDLE(Canvas_drawImageRect_4, 256, 64, false, 0) {
void draw(SkCanvas* canvas) {
uint32_t pixels[][2] = { { SK_ColorBLACK, SK_ColorWHITE },
{ SK_ColorWHITE, SK_ColorBLACK } };
SkBitmap bitmap;
bitmap.installPixels(SkImageInfo::MakeN32Premul(2, 2),
(void*) pixels, sizeof(pixels[0]));
sk_sp<SkImage> image = bitmap.asImage();
SkPaint paint;
canvas->scale(4, 4);
for (auto alpha : { 50, 100, 150, 255 } ) {
paint.setAlpha(alpha);
canvas->drawImageRect(image, SkRect::MakeWH(2, 2), SkRect::MakeWH(8, 8),
SkSamplingOptions(), &paint, SkCanvas::kStrict_SrcRectConstraint);
canvas->translate(8, 0);
}
}
} // END FIDDLE