clockwerk-opensim-stable – Rev 1
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/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of the OpenSimulator Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``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 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.
*/
using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Net;
using Nini.Config;
using OpenMetaverse;
using OpenMetaverse.Imaging;
using OpenSim.Region.CoreModules.Scripting.DynamicTexture;
using OpenSim.Region.Framework.Interfaces;
using OpenSim.Region.Framework.Scenes;
using log4net;
using System.Reflection;
using Mono.Addins;
//using Cairo;
namespace OpenSim.Region.CoreModules.Scripting.VectorRender
{
[Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "VectorRenderModule")]
public class VectorRenderModule : ISharedRegionModule, IDynamicTextureRender
{
// These fields exist for testing purposes, please do not remove.
// private static bool s_flipper;
// private static byte[] s_asset1Data;
// private static byte[] s_asset2Data;
private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
private Scene m_scene;
private IDynamicTextureManager m_textureManager;
private Graphics m_graph;
private string m_fontName = "Arial";
public VectorRenderModule()
{
}
#region IDynamicTextureRender Members
public string GetContentType()
{
return "vector";
}
public string GetName()
{
return Name;
}
public bool SupportsAsynchronous()
{
return true;
}
// public bool AlwaysIdenticalConversion(string bodyData, string extraParams)
// {
// string[] lines = GetLines(bodyData);
// return lines.Any((str, r) => str.StartsWith("Image"));
// }
public IDynamicTexture ConvertUrl(string url, string extraParams)
{
return null;
}
public IDynamicTexture ConvertData(string bodyData, string extraParams)
{
return Draw(bodyData, extraParams);
}
public bool AsyncConvertUrl(UUID id, string url, string extraParams)
{
return false;
}
public bool AsyncConvertData(UUID id, string bodyData, string extraParams)
{
if (m_textureManager == null)
{
m_log.Warn("[VECTORRENDERMODULE]: No texture manager. Can't function");
return false;
}
// XXX: This isn't actually being done asynchronously!
m_textureManager.ReturnData(id, ConvertData(bodyData, extraParams));
return true;
}
public void GetDrawStringSize(string text, string fontName, int fontSize,
out double xSize, out double ySize)
{
lock (this)
{
using (Font myFont = new Font(fontName, fontSize))
{
SizeF stringSize = new SizeF();
// XXX: This lock may be unnecessary.
lock (m_graph)
{
stringSize = m_graph.MeasureString(text, myFont);
xSize = stringSize.Width;
ySize = stringSize.Height;
}
}
}
}
#endregion
#region ISharedRegionModule Members
public void Initialise(IConfigSource config)
{
IConfig cfg = config.Configs["VectorRender"];
if (null != cfg)
{
m_fontName = cfg.GetString("font_name", m_fontName);
}
m_log.DebugFormat("[VECTORRENDERMODULE]: using font \"{0}\" for text rendering.", m_fontName);
// We won't dispose of these explicitly since this module is only removed when the entire simulator
// is shut down.
Bitmap bitmap = new Bitmap(1024, 1024, PixelFormat.Format32bppArgb);
m_graph = Graphics.FromImage(bitmap);
}
public void PostInitialise()
{
}
public void AddRegion(Scene scene)
{
if (m_scene == null)
{
m_scene = scene;
}
}
public void RegionLoaded(Scene scene)
{
if (m_textureManager == null && m_scene == scene)
{
m_textureManager = m_scene.RequestModuleInterface<IDynamicTextureManager>();
if (m_textureManager != null)
{
m_textureManager.RegisterRender(GetContentType(), this);
}
}
}
public void RemoveRegion(Scene scene)
{
}
public void Close()
{
}
public string Name
{
get { return "VectorRenderModule"; }
}
public Type ReplaceableInterface
{
get { return null; }
}
#endregion
private IDynamicTexture Draw(string data, string extraParams)
{
// We need to cater for old scripts that didnt use extraParams neatly, they use either an integer size which represents both width and height, or setalpha
// we will now support multiple comma seperated params in the form width:256,height:512,alpha:255
int width = 256;
int height = 256;
int alpha = 255; // 0 is transparent
Color bgColor = Color.White; // Default background color
char altDataDelim = ';';
char[] paramDelimiter = { ',' };
char[] nvpDelimiter = { ':' };
extraParams = extraParams.Trim();
extraParams = extraParams.ToLower();
string[] nvps = extraParams.Split(paramDelimiter);
int temp = -1;
foreach (string pair in nvps)
{
string[] nvp = pair.Split(nvpDelimiter);
string name = "";
string value = "";
if (nvp[0] != null)
{
name = nvp[0].Trim();
}
if (nvp.Length == 2)
{
value = nvp[1].Trim();
}
switch (name)
{
case "width":
temp = parseIntParam(value);
if (temp != -1)
{
if (temp < 1)
{
width = 1;
}
else if (temp > 2048)
{
width = 2048;
}
else
{
width = temp;
}
}
break;
case "height":
temp = parseIntParam(value);
if (temp != -1)
{
if (temp < 1)
{
height = 1;
}
else if (temp > 2048)
{
height = 2048;
}
else
{
height = temp;
}
}
break;
case "alpha":
temp = parseIntParam(value);
if (temp != -1)
{
if (temp < 0)
{
alpha = 0;
}
else if (temp > 255)
{
alpha = 255;
}
else
{
alpha = temp;
}
}
// Allow a bitmap w/o the alpha component to be created
else if (value.ToLower() == "false") {
alpha = 256;
}
break;
case "bgcolor":
case "bgcolour":
int hex = 0;
if (Int32.TryParse(value, NumberStyles.HexNumber, CultureInfo.InvariantCulture, out hex))
{
bgColor = Color.FromArgb(hex);
}
else
{
bgColor = Color.FromName(value);
}
break;
case "altdatadelim":
altDataDelim = value.ToCharArray()[0];
break;
case "":
// blank string has been passed do nothing just use defaults
break;
default: // this is all for backwards compat, all a bit ugly hopfully can be removed in future
// could be either set alpha or just an int
if (name == "setalpha")
{
alpha = 0; // set the texture to have transparent background (maintains backwards compat)
}
else
{
// this function used to accept an int on its own that represented both
// width and height, this is to maintain backwards compat, could be removed
// but would break existing scripts
temp = parseIntParam(name);
if (temp != -1)
{
if (temp > 1024)
temp = 1024;
if (temp < 128)
temp = 128;
width = temp;
height = temp;
}
}
break;
}
}
Bitmap bitmap = null;
Graphics graph = null;
bool reuseable = false;
try
{
// XXX: In testing, it appears that if multiple threads dispose of separate GDI+ objects simultaneously,
// the native malloc heap can become corrupted, possibly due to a double free(). This may be due to
// bugs in the underlying libcairo used by mono's libgdiplus.dll on Linux/OSX. These problems were
// seen with both libcario 1.10.2-6.1ubuntu3 and 1.8.10-2ubuntu1. They go away if disposal is perfomed
// under lock.
lock (this)
{
if (alpha == 256)
bitmap = new Bitmap(width, height, PixelFormat.Format32bppRgb);
else
bitmap = new Bitmap(width, height, PixelFormat.Format32bppArgb);
graph = Graphics.FromImage(bitmap);
// this is really just to save people filling the
// background color in their scripts, only do when fully opaque
if (alpha >= 255)
{
using (SolidBrush bgFillBrush = new SolidBrush(bgColor))
{
graph.FillRectangle(bgFillBrush, 0, 0, width, height);
}
}
for (int w = 0; w < bitmap.Width; w++)
{
if (alpha <= 255)
{
for (int h = 0; h < bitmap.Height; h++)
{
bitmap.SetPixel(w, h, Color.FromArgb(alpha, bitmap.GetPixel(w, h)));
}
}
}
GDIDraw(data, graph, altDataDelim, out reuseable);
}
byte[] imageJ2000 = new byte[0];
// This code exists for testing purposes, please do not remove.
// if (s_flipper)
// imageJ2000 = s_asset1Data;
// else
// imageJ2000 = s_asset2Data;
//
// s_flipper = !s_flipper;
try
{
imageJ2000 = OpenJPEG.EncodeFromImage(bitmap, true);
}
catch (Exception e)
{
m_log.ErrorFormat(
"[VECTORRENDERMODULE]: OpenJpeg Encode Failed. Exception {0}{1}",
e.Message, e.StackTrace);
}
return new OpenSim.Region.CoreModules.Scripting.DynamicTexture.DynamicTexture(
data, extraParams, imageJ2000, new Size(width, height), reuseable);
}
finally
{
// XXX: In testing, it appears that if multiple threads dispose of separate GDI+ objects simultaneously,
// the native malloc heap can become corrupted, possibly due to a double free(). This may be due to
// bugs in the underlying libcairo used by mono's libgdiplus.dll on Linux/OSX. These problems were
// seen with both libcario 1.10.2-6.1ubuntu3 and 1.8.10-2ubuntu1. They go away if disposal is perfomed
// under lock.
lock (this)
{
if (graph != null)
graph.Dispose();
if (bitmap != null)
bitmap.Dispose();
}
}
}
private int parseIntParam(string strInt)
{
int parsed;
try
{
parsed = Convert.ToInt32(strInt);
}
catch (Exception)
{
//Ckrinke: Add a WriteLine to remove the warning about 'e' defined but not used
// m_log.Debug("Problem with Draw. Please verify parameters." + e.ToString());
parsed = -1;
}
return parsed;
}
/*
private void CairoDraw(string data, System.Drawing.Graphics graph)
{
using (Win32Surface draw = new Win32Surface(graph.GetHdc()))
{
Context contex = new Context(draw);
contex.Antialias = Antialias.None; //fastest method but low quality
contex.LineWidth = 7;
char[] lineDelimiter = { ';' };
char[] partsDelimiter = { ',' };
string[] lines = data.Split(lineDelimiter);
foreach (string line in lines)
{
string nextLine = line.Trim();
if (nextLine.StartsWith("MoveTO"))
{
float x = 0;
float y = 0;
GetParams(partsDelimiter, ref nextLine, ref x, ref y);
contex.MoveTo(x, y);
}
else if (nextLine.StartsWith("LineTo"))
{
float x = 0;
float y = 0;
GetParams(partsDelimiter, ref nextLine, ref x, ref y);
contex.LineTo(x, y);
contex.Stroke();
}
}
}
graph.ReleaseHdc();
}
*/
/// <summary>
/// Split input data into discrete command lines.
/// </summary>
/// <returns></returns>
/// <param name='data'></param>
/// <param name='dataDelim'></param>
private string[] GetLines(string data, char dataDelim)
{
char[] lineDelimiter = { dataDelim };
return data.Split(lineDelimiter);
}
private void GDIDraw(string data, Graphics graph, char dataDelim, out bool reuseable)
{
reuseable = true;
Point startPoint = new Point(0, 0);
Point endPoint = new Point(0, 0);
Pen drawPen = null;
Font myFont = null;
SolidBrush myBrush = null;
try
{
drawPen = new Pen(Color.Black, 7);
string fontName = m_fontName;
float fontSize = 14;
myFont = new Font(fontName, fontSize);
myBrush = new SolidBrush(Color.Black);
char[] partsDelimiter = {','};
foreach (string line in GetLines(data, dataDelim))
{
string nextLine = line.Trim();
// m_log.DebugFormat("[VECTOR RENDER MODULE]: Processing line '{0}'", nextLine);
//replace with switch, or even better, do some proper parsing
if (nextLine.StartsWith("MoveTo"))
{
float x = 0;
float y = 0;
GetParams(partsDelimiter, ref nextLine, 6, ref x, ref y);
startPoint.X = (int) x;
startPoint.Y = (int) y;
}
else if (nextLine.StartsWith("LineTo"))
{
float x = 0;
float y = 0;
GetParams(partsDelimiter, ref nextLine, 6, ref x, ref y);
endPoint.X = (int) x;
endPoint.Y = (int) y;
graph.DrawLine(drawPen, startPoint, endPoint);
startPoint.X = endPoint.X;
startPoint.Y = endPoint.Y;
}
else if (nextLine.StartsWith("Text"))
{
nextLine = nextLine.Remove(0, 4);
nextLine = nextLine.Trim();
graph.DrawString(nextLine, myFont, myBrush, startPoint);
}
else if (nextLine.StartsWith("Image"))
{
// We cannot reuse any generated texture involving fetching an image via HTTP since that image
// can change.
reuseable = false;
float x = 0;
float y = 0;
GetParams(partsDelimiter, ref nextLine, 5, ref x, ref y);
endPoint.X = (int) x;
endPoint.Y = (int) y;
using (Image image = ImageHttpRequest(nextLine))
{
if (image != null)
{
graph.DrawImage(image, (float)startPoint.X, (float)startPoint.Y, x, y);
}
else
{
using (Font errorFont = new Font(m_fontName,6))
{
graph.DrawString("URL couldn't be resolved or is", errorFont,
myBrush, startPoint);
graph.DrawString("not an image. Please check URL.", errorFont,
myBrush, new Point(startPoint.X, 12 + startPoint.Y));
}
graph.DrawRectangle(drawPen, startPoint.X, startPoint.Y, endPoint.X, endPoint.Y);
}
}
startPoint.X += endPoint.X;
startPoint.Y += endPoint.Y;
}
else if (nextLine.StartsWith("Rectangle"))
{
float x = 0;
float y = 0;
GetParams(partsDelimiter, ref nextLine, 9, ref x, ref y);
endPoint.X = (int) x;
endPoint.Y = (int) y;
graph.DrawRectangle(drawPen, startPoint.X, startPoint.Y, endPoint.X, endPoint.Y);
startPoint.X += endPoint.X;
startPoint.Y += endPoint.Y;
}
else if (nextLine.StartsWith("FillRectangle"))
{
float x = 0;
float y = 0;
GetParams(partsDelimiter, ref nextLine, 13, ref x, ref y);
endPoint.X = (int) x;
endPoint.Y = (int) y;
graph.FillRectangle(myBrush, startPoint.X, startPoint.Y, endPoint.X, endPoint.Y);
startPoint.X += endPoint.X;
startPoint.Y += endPoint.Y;
}
else if (nextLine.StartsWith("FillPolygon"))
{
PointF[] points = null;
GetParams(partsDelimiter, ref nextLine, 11, ref points);
graph.FillPolygon(myBrush, points);
}
else if (nextLine.StartsWith("Polygon"))
{
PointF[] points = null;
GetParams(partsDelimiter, ref nextLine, 7, ref points);
graph.DrawPolygon(drawPen, points);
}
else if (nextLine.StartsWith("Ellipse"))
{
float x = 0;
float y = 0;
GetParams(partsDelimiter, ref nextLine, 7, ref x, ref y);
endPoint.X = (int)x;
endPoint.Y = (int)y;
graph.DrawEllipse(drawPen, startPoint.X, startPoint.Y, endPoint.X, endPoint.Y);
startPoint.X += endPoint.X;
startPoint.Y += endPoint.Y;
}
else if (nextLine.StartsWith("FontSize"))
{
nextLine = nextLine.Remove(0, 8);
nextLine = nextLine.Trim();
fontSize = Convert.ToSingle(nextLine, CultureInfo.InvariantCulture);
myFont.Dispose();
myFont = new Font(fontName, fontSize);
}
else if (nextLine.StartsWith("FontProp"))
{
nextLine = nextLine.Remove(0, 8);
nextLine = nextLine.Trim();
string[] fprops = nextLine.Split(partsDelimiter);
foreach (string prop in fprops)
{
switch (prop)
{
case "B":
if (!(myFont.Bold))
{
Font newFont = new Font(myFont, myFont.Style | FontStyle.Bold);
myFont.Dispose();
myFont = newFont;
}
break;
case "I":
if (!(myFont.Italic))
{
Font newFont = new Font(myFont, myFont.Style | FontStyle.Italic);
myFont.Dispose();
myFont = newFont;
}
break;
case "U":
if (!(myFont.Underline))
{
Font newFont = new Font(myFont, myFont.Style | FontStyle.Underline);
myFont.Dispose();
myFont = newFont;
}
break;
case "S":
if (!(myFont.Strikeout))
{
Font newFont = new Font(myFont, myFont.Style | FontStyle.Strikeout);
myFont.Dispose();
myFont = newFont;
}
break;
case "R":
// We need to place this newFont inside its own context so that the .NET compiler
// doesn't complain about a redefinition of an existing newFont, even though there is none
// The mono compiler doesn't produce this error.
{
Font newFont = new Font(myFont, FontStyle.Regular);
myFont.Dispose();
myFont = newFont;
}
break;
}
}
}
else if (nextLine.StartsWith("FontName"))
{
nextLine = nextLine.Remove(0, 8);
fontName = nextLine.Trim();
myFont.Dispose();
myFont = new Font(fontName, fontSize);
}
else if (nextLine.StartsWith("PenSize"))
{
nextLine = nextLine.Remove(0, 7);
nextLine = nextLine.Trim();
float size = Convert.ToSingle(nextLine, CultureInfo.InvariantCulture);
drawPen.Width = size;
}
else if (nextLine.StartsWith("PenCap"))
{
bool start = true, end = true;
nextLine = nextLine.Remove(0, 6);
nextLine = nextLine.Trim();
string[] cap = nextLine.Split(partsDelimiter);
if (cap[0].ToLower() == "start")
end = false;
else if (cap[0].ToLower() == "end")
start = false;
else if (cap[0].ToLower() != "both")
return;
string type = cap[1].ToLower();
if (end)
{
switch (type)
{
case "arrow":
drawPen.EndCap = System.Drawing.Drawing2D.LineCap.ArrowAnchor;
break;
case "round":
drawPen.EndCap = System.Drawing.Drawing2D.LineCap.RoundAnchor;
break;
case "diamond":
drawPen.EndCap = System.Drawing.Drawing2D.LineCap.DiamondAnchor;
break;
case "flat":
drawPen.EndCap = System.Drawing.Drawing2D.LineCap.Flat;
break;
}
}
if (start)
{
switch (type)
{
case "arrow":
drawPen.StartCap = System.Drawing.Drawing2D.LineCap.ArrowAnchor;
break;
case "round":
drawPen.StartCap = System.Drawing.Drawing2D.LineCap.RoundAnchor;
break;
case "diamond":
drawPen.StartCap = System.Drawing.Drawing2D.LineCap.DiamondAnchor;
break;
case "flat":
drawPen.StartCap = System.Drawing.Drawing2D.LineCap.Flat;
break;
}
}
}
else if (nextLine.StartsWith("PenColour") || nextLine.StartsWith("PenColor"))
{
nextLine = nextLine.Remove(0, 9);
nextLine = nextLine.Trim();
int hex = 0;
Color newColor;
if (Int32.TryParse(nextLine, NumberStyles.HexNumber, CultureInfo.InvariantCulture, out hex))
{
newColor = Color.FromArgb(hex);
}
else
{
// this doesn't fail, it just returns black if nothing is found
newColor = Color.FromName(nextLine);
}
myBrush.Color = newColor;
drawPen.Color = newColor;
}
}
}
finally
{
if (drawPen != null)
drawPen.Dispose();
if (myFont != null)
myFont.Dispose();
if (myBrush != null)
myBrush.Dispose();
}
}
private static void GetParams(char[] partsDelimiter, ref string line, int startLength, ref float x, ref float y)
{
line = line.Remove(0, startLength);
string[] parts = line.Split(partsDelimiter);
if (parts.Length == 2)
{
string xVal = parts[0].Trim();
string yVal = parts[1].Trim();
x = Convert.ToSingle(xVal, CultureInfo.InvariantCulture);
y = Convert.ToSingle(yVal, CultureInfo.InvariantCulture);
}
else if (parts.Length > 2)
{
string xVal = parts[0].Trim();
string yVal = parts[1].Trim();
x = Convert.ToSingle(xVal, CultureInfo.InvariantCulture);
y = Convert.ToSingle(yVal, CultureInfo.InvariantCulture);
line = "";
for (int i = 2; i < parts.Length; i++)
{
line = line + parts[i].Trim();
line = line + " ";
}
}
}
private static void GetParams(char[] partsDelimiter, ref string line, int startLength, ref PointF[] points)
{
line = line.Remove(0, startLength);
string[] parts = line.Split(partsDelimiter);
if (parts.Length > 1 && parts.Length % 2 == 0)
{
points = new PointF[parts.Length / 2];
for (int i = 0; i < parts.Length; i = i + 2)
{
string xVal = parts[i].Trim();
string yVal = parts[i+1].Trim();
float x = Convert.ToSingle(xVal, CultureInfo.InvariantCulture);
float y = Convert.ToSingle(yVal, CultureInfo.InvariantCulture);
PointF point = new PointF(x, y);
points[i / 2] = point;
// m_log.DebugFormat("[VECTOR RENDER MODULE]: Got point {0}", points[i / 2]);
}
}
}
private Bitmap ImageHttpRequest(string url)
{
try
{
WebRequest request = HttpWebRequest.Create(url);
using (HttpWebResponse response = (HttpWebResponse)(request).GetResponse())
{
if (response.StatusCode == HttpStatusCode.OK)
{
using (Stream s = response.GetResponseStream())
{
Bitmap image = new Bitmap(s);
return image;
}
}
}
}
catch { }
return null;
}
}
}
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