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//
// SvgPicture.cs
//
// Author:
// Jean-Philippe Bruyère <jp.bruyere@hotmail.com>
//
// Copyright (c) 2015 jp
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
using System;
using System.IO;
using Cairo;
namespace go
{
public class SvgPicture : Picture
{
Rsvg.Handle hSVG;
string _subSvg;
public SvgPicture ()
{}
public SvgPicture (string path) : base(path)
{}
protected override void loadFromStream (Stream stream)
{
using (MemoryStream ms = new MemoryStream ()) {
stream.CopyTo (ms);
hSVG = new Rsvg.Handle (ms.ToArray ());
Dimensions = new Size (hSVG.Dimensions.Width, hSVG.Dimensions.Height);
}
}
public override void Paint (Cairo.Context gr, Rectangle rect, string subPart = "")
{
float widthRatio = (float)rect.Width / Dimensions.Width;
float heightRatio = (float)rect.Height / Dimensions.Height;
float ratio = Math.Min (widthRatio, heightRatio);
Rectangle rImg = rect;
gr.Save ();
if (KeepProportions)
gr.Scale (ratio, ratio);
else
gr.Scale (widthRatio, heightRatio);
gr.Translate (rImg.X/widthRatio, rImg.Y/heightRatio);
if (string.IsNullOrEmpty (subPart))
hSVG.RenderCairo (gr);
else
hSVG.RenderCairoSub (gr, "#" + subPart);
gr.Restore ();
}
}
}
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