mattercontrol/original/MatterControlLib/Library/OnDemandLibraryItem.cs

109 lines
No EOL
3.2 KiB
C#

/*
Copyright (c) 2018, John Lewin
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
The views and conclusions contained in the software and documentation are those
of the authors and should not be interpreted as representing official policies,
either expressed or implied, of the FreeBSD Project.
*/
using System;
using System.IO;
using System.Threading.Tasks;
using MatterHackers.DataConverters3D;
using MatterHackers.Localizations;
namespace MatterHackers.MatterControl.Library
{
public class OnDemandLibraryItem : ILibraryAssetStream
{
public OnDemandLibraryItem(string name)
{
this.Name = name ?? "Unknown".Localize();
// TODO: Fix cheat this quick hack which in the short term naively allows IsContentFileType to return true and drag/drop to succeed
this.ContentType = "mcx";
}
public string ID => Guid.NewGuid().ToString();
private string _name;
public string Name
{
get => _name; set
{
if (_name != value)
{
_name = value;
NameChanged?.Invoke(this, EventArgs.Empty);
}
}
}
public event EventHandler NameChanged;
public string FileName => $"{this.Name}.{this.ContentType}";
public bool IsProtected => false;
public bool IsVisible => true;
public DateTime DateCreated { get; } = DateTime.Now;
public DateTime DateModified { get; } = DateTime.Now;
public string ContentType { get; set; }
public string Category => "General";
public string AssetPath { get; set; }
public long FileSize => -1;
public bool LocalContentExists => false;
public async Task<StreamAndLength> GetStream(Action<double, string> progress)
{
return new StreamAndLength()
{
Stream = await ToStream()
};
}
public Func<Task<IObject3D>> Object3DProvider { get; set; }
private async Task<MemoryStream> ToStream()
{
// Serialize to in memory stream
var memoryStream = new MemoryStream();
var object3D = await this.Object3DProvider();
object3D.SaveTo(memoryStream);
// Reset to start of content
memoryStream.Position = 0;
return memoryStream;
}
}
}