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//
// Picture.cs
//
// Author:
// Jean-Philippe Bruyère <jp.bruyere@hotmail.com>
//
// Copyright (c) 2013-2017 Jean-Philippe Bruyère
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using System.IO;
using Cairo;
using System.Collections.Generic;
namespace Crow
{
/// <summary>
/// store data and dimensions for resource sharing
/// </summary>
internal class sharedPicture {
//TODO: restructure this whith clever conceptual classes
public object Data;
public Size Dims;
public sharedPicture (object _data, Size _dims){
Data = _data;
Dims = _dims;
}
}
/// <summary>
/// virtual class for loading and drawing picture in the interface
///
/// Every loaded resources are stored in a dictonary with their path as key and shared
/// among interface elements
/// </summary>
public abstract class Picture : Fill
{
/// <summary>
/// share a single store for picture resources among usage in different controls
/// </summary>
internal static Dictionary<string, sharedPicture> sharedResources = new Dictionary<string, sharedPicture>();
/// <summary>
/// path of the picture
/// </summary>
public string Path;
/// <summary>
/// unscaled dimensions fetched on loading
/// </summary>
public Size Dimensions;
/// <summary>
/// if true and image has to be scalled, it will be scaled in both direction
/// equaly
/// </summary>
public bool KeepProportions = false;
/// <summary>
/// allow or not the picture to be scalled on request by the painter
/// </summary>
public bool Scaled = true;
#region CTOR
/// <summary>
/// Initializes a new instance of Picture.
/// </summary>
public Picture ()
{
}
/// <summary>
/// Initializes a new instance of Picture by loading the image pointed by the path argument
/// </summary>
/// <param name="path">image path, may be embedded</param>
public Picture (string path)
{
Path = path;
}
#endregion
#region Image Loading
/// <summary>
/// load the image for rendering from the stream given as argument
/// </summary>
/// <param name="stream">picture stream</param>
public abstract void Load(Interface iface, string path);
#endregion
/// <summary>
/// abstract method to paint the image in the rectangle given in arguments according
/// to the Scale and keepProportion parameters.
/// </summary>
/// <param name="gr">drawing Backend context</param>
/// <param name="rect">bounds of the target surface to paint</param>
/// <param name="subPart">used for svg only</param>
public abstract void Paint(Context ctx, Rectangle rect, string subPart = "");
#region Operators
public static implicit operator Picture(string path)
{
if (string.IsNullOrEmpty (path))
return null;
Picture _pic = null;
if (path.EndsWith (".svg", true, System.Globalization.CultureInfo.InvariantCulture))
_pic = new SvgPicture (path);
else
_pic = new BmpPicture (path);
return _pic;
}
public static implicit operator string(Picture _pic)
{
return _pic == null ? null : _pic.Path;
}
#endregion
public static object Parse(string path)
{
if (string.IsNullOrEmpty (path))
return null;
Picture _pic = null;
if (path.EndsWith (".svg", true, System.Globalization.CultureInfo.InvariantCulture))
_pic = new SvgPicture (path);
else
_pic = new BmpPicture (path);
return _pic;
}
public override string ToString ()
{
return Path;
}
}
}
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