//// This code is part of Document Solutions for Imaging demos.// Copyright (c) MESCIUS inc. All rights reserved.//using System;using System.IO;using System.Drawing;using GrapeCity.Documents.Imaging;
namespace DsImagingWeb.Demos{    // This sample loads a large PNG image, resizes it to several smaller sizes    // commonly used in icons, and creates a multi-frame .ICO from those.    // See also the ReadIco sample which renders the frames from the .ICO    // created by this sample.    public class MakeIco    {        public string DefaultMime { get => Common.Util.MimeTypes.ICO; }
        public Stream GenerateImageStream(string targetMime, Size pixelSize, float dpi, bool opaque, string[] sampleParams = null)        {            if (targetMime != Common.Util.MimeTypes.ICO)                throw new Exception("This sample only supports ICO output format.");
            var srcPath = Path.Combine("Resources", "ImagesBis", "mescius-logomark-c.png");            var srcBmp = new GcBitmap();
            using (var s = File.OpenRead(srcPath))                srcBmp.Load(s);
            using (var bmp16 = srcBmp.Resize(16, 16))            using (var bmp24 = srcBmp.Resize(24, 24))            using (var bmp32 = srcBmp.Resize(32, 32))            using (var bmp48 = srcBmp.Resize(48, 48))            using (var bmp256 = srcBmp.Resize(256, 256))            using (var ico = new GcIco())            {                ico.Frames.Add(new IcoFrame(bmp256, IcoFrameEncoding.Png));                ico.Frames.Add(new IcoFrame(bmp48, IcoFrameEncoding.Png));                ico.Frames.Add(new IcoFrame(bmp32, IcoFrameEncoding.Png));                ico.Frames.Add(new IcoFrame(bmp24, IcoFrameEncoding.Png));                ico.Frames.Add(new IcoFrame(bmp16, IcoFrameEncoding.Png));
                var ms = new MemoryStream();                ico.Save(ms);                ms.Seek(0, SeekOrigin.Begin);                return ms;            }        }    }}