2019-03-15 18:22:51 +00:00
|
|
|
// Copyright 2019 Google LLC.
|
|
|
|
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
|
2019-04-23 17:05:21 +00:00
|
|
|
#include "tools/fiddle/examples.h"
|
2019-03-15 18:22:51 +00:00
|
|
|
// HASH=febdbfac6cf4cde69837643be2e1f6dd
|
2019-03-18 20:06:34 +00:00
|
|
|
REG_FIDDLE(Pixmap_extractSubset, 256, 128, false, 3) {
|
2019-03-15 18:22:51 +00:00
|
|
|
void draw(SkCanvas* canvas) {
|
|
|
|
std::vector<int32_t> pixels;
|
|
|
|
pixels.resize(image->height() * image->width() * 4);
|
|
|
|
SkPixmap pixmap(SkImageInfo::Make(image->width(), image->height(), kN32_SkColorType,
|
|
|
|
image->alphaType()), (const void*) &pixels.front(), image->width() * 4);
|
|
|
|
image->readPixels(pixmap, 0, 0);
|
|
|
|
SkPixmap inset;
|
|
|
|
if (pixmap.extractSubset(&inset, {128, 128, 512, 512})) {
|
|
|
|
SkBitmap bitmap;
|
|
|
|
bitmap.installPixels(inset);
|
|
|
|
canvas->drawBitmap(bitmap, 0, 0);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
} // END FIDDLE
|