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=8e3c8a9c1d0d2e9b8bf66e24d274f792
5REG_FIDDLE(Pixmap_scalePixels, 256, 256, false, 3) {
6void draw(SkCanvas* canvas) {
7    SkImageInfo info = SkImageInfo::MakeN32Premul(image->width(), image->height());
8    std::vector<int32_t> srcPixels;
9    int rowBytes = image->width() * 4;
10    srcPixels.resize(image->height() * rowBytes);
11    SkPixmap pixmap(info, (const void*) &srcPixels.front(), rowBytes);
12    image->readPixels(nullptr, pixmap, 0, 0);
13    for (int offset : { 32, 64, 96 } ) {
14        info = SkImageInfo::MakeN32Premul(image->width() + offset, image->height());
15        rowBytes = info.width() * 4;
16        std::vector<int32_t> dstPixels;
17        dstPixels.resize(image->height() * rowBytes);
18        SkPixmap dstmap(info, &dstPixels.front(), rowBytes);
19        pixmap.scalePixels(dstmap, SkSamplingOptions(SkFilterMode::kLinear,
20                                                     SkMipmapMode::kNearest));
21        SkBitmap bitmap;
22        bitmap.installPixels(dstmap);
23        canvas->translate(32, 32);
24        canvas->drawImage(bitmap.asImage(), 0, 0);
25    }
26}
27}  // END FIDDLE
28