skia2/docs/examples/Pixmap_readPixels_2.cpp
Mike Reed ecdd979bc0 drawBitmap is deprecated
Bug: skia:11216
Change-Id: I4affb8e00ff7e7b3e8d873ddfd653f397ca8d928
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/360979
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
2021-01-28 02:44:21 +00:00

25 lines
1.0 KiB
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=094ca0bd37588cc7be241bb387a3e17b
REG_FIDDLE(Pixmap_readPixels_2, 256, 256, false, 3) {
void draw(SkCanvas* canvas) {
SkImageInfo info = SkImageInfo::MakeN32Premul(image->width(), image->height());
std::vector<int32_t> srcPixels;
const int rowBytes = image->width() * 4;
srcPixels.resize(image->height() * rowBytes);
SkPixmap pixmap(info, (const void*) &srcPixels.front(), rowBytes);
image->readPixels(nullptr, pixmap, 0, 0);
for (int offset : { 32, 64, 96 } ) {
std::vector<int32_t> dstPixels;
dstPixels.resize(image->height() * rowBytes);
pixmap.readPixels(info, &dstPixels.front(), rowBytes, offset, 0);
SkBitmap bitmap;
SkPixmap dstmap(info, &dstPixels.front(), rowBytes);
bitmap.installPixels(dstmap);
canvas->translate(32, 32);
canvas->drawImage(bitmap.asImage(), 0, 0);
}
}
} // END FIDDLE