greenshot/Greenshot/Drawing/HtmlContainer.cs
2010-07-25 18:20:18 +00:00

123 lines
3.2 KiB
C#

/*
* Greenshot - a free and open source screenshot tool
* Copyright (C) 2007-2010 Thomas Braun, Jens Klingen, Robin Krom
*
* For more information see: http://getgreenshot.org/
* The Greenshot project is hosted on Sourceforge: http://sourceforge.net/projects/greenshot/
*
* 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 1 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.Drawing;
using System.IO;
using System.Runtime.Serialization;
using System.Text.RegularExpressions;
using System.Windows.Forms;
using Greenshot.Configuration;
using Greenshot.Drawing.Fields;
using Greenshot.Helpers;
namespace Greenshot.Drawing {
/// <summary>
/// Description of BitmapContainer.
/// </summary>
[Serializable()]
public class HtmlContainer : DrawableContainer {
private static log4net.ILog LOG = log4net.LogManager.GetLogger(typeof(HtmlContainer));
private const string SCRIPT_PATTERN = "<script(.*?)</script>";
private string html = null;
private Bitmap bitmap = null;
private Size lastSize = new Size(0,0);
public HtmlContainer(Surface parent, string html) : this(parent) {
Html = html;
}
public HtmlContainer(Surface parent) : base(parent) {
Width = 100;
Height = 100;
}
private void removeScripts() {
Regex regExRemoveScript = new Regex(SCRIPT_PATTERN);
html = regExRemoveScript.Replace(html, "");
}
public string Html {
set {
html = value;
removeScripts();
lastSize = new Size(0, 0);
RedrawIfNeeded();
}
get { return html; }
}
/**
* Destructor
*/
~HtmlContainer() {
Dispose(false);
}
/**
* The public accessible Dispose
* Will call the GarbageCollector to SuppressFinalize, preventing being cleaned twice
*/
public new void Dispose() {
Dispose(true);
base.Dispose();
GC.SuppressFinalize(this);
}
// The bulk of the clean-up code is implemented in Dispose(bool)
/**
* This Dispose is called from the Dispose and the Destructor.
* When disposing==true all non-managed resources should be freed too!
*/
protected virtual void Dispose(bool disposing) {
if (disposing) {
if (bitmap != null) {
bitmap.Dispose();
}
}
bitmap = null;
}
protected void RedrawIfNeeded() {
if (html == null) {
if (bitmap != null) {
bitmap.Dispose();
}
bitmap = null;
return;
}
if (bitmap == null || lastSize.Height != Height || lastSize.Width != Width) {
bitmap = WebsiteImageGenerator.GetImageFromHTML(html);
if (bitmap != null) {
lastSize = new Size(bitmap.Width, bitmap.Height);
}
}
}
public override void Draw(Graphics g, RenderMode rm) {
RedrawIfNeeded();
if (bitmap != null) {
g.DrawImage(bitmap, Bounds);
}
}
}
}