docs/examples/Image_FromBitmap.cpp

// 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"
REG_FIDDLE(Image_FromBitmap, 256, 50, false, 0) {
    void draw(SkCanvas * canvas) {
        uint8_t storage[][5] = {{0xCA, 0xDA, 0xCA, 0xC9, 0xA3},
                                {0xAC, 0xA8, 0x89, 0xA7, 0x87},
                                {0x9B, 0xB5, 0xE5, 0x95, 0x46},
                                {0x90, 0x81, 0xC5, 0x71, 0x33},
                                {0x75, 0x55, 0x44, 0x40, 0x30}};
        SkImageInfo imageInfo = SkImageInfo::Make(5, 5, kGray_8_SkColorType, kOpaque_SkAlphaType);
        SkPixmap pixmap(imageInfo, storage[0], sizeof(storage) / 5);
        SkBitmap bitmap;
        bitmap.installPixels(pixmap);
        sk_sp<SkImage> image1 = bitmap.asImage();
        bitmap.setImmutable();
        sk_sp<SkImage> image2 = bitmap.asImage();
        *pixmap.writable_addr8(2, 2) = 0x00;
        canvas->scale(10, 10);
        canvas->drawImage(image1, 0, 0);
        canvas->drawImage(image2, 10, 0);
    }
}  // END FIDDLE