From 383f8b3ac601baef7b2cb322f53fb36b69367286 Mon Sep 17 00:00:00 2001
From: Sean Dague
Date: Wed, 18 Feb 2009 12:56:36 +0000
Subject: From: Christopher Yeoh <yeohc@au1.ibm.com>

The attached patch implements osGetDrawStringSize that looks like:

vector osGetDrawStringSize(string contentType, string text, string
fontName, int fontSize)

in LSL. It is meant to be used in conjunction with the osDraw*
functions. It returns accurate information on the size that a given
string will be rendered given the specified font and font size.
This allows for nicely formatted and positioned text on the generated
image.

---
 .../Scripting/DynamicTexture/DynamicTextureModule.cs       | 12 ++++++++++++
 .../Scripting/LoadImageURL/LoadImageURLModule.cs           |  7 +++++++
 .../Scripting/VectorRender/VectorRenderModule.cs           | 14 ++++++++++++++
 3 files changed, 33 insertions(+)

(limited to 'OpenSim/Region/CoreModules/Scripting')

diff --git a/OpenSim/Region/CoreModules/Scripting/DynamicTexture/DynamicTextureModule.cs b/OpenSim/Region/CoreModules/Scripting/DynamicTexture/DynamicTextureModule.cs
index a8f841b..ab404bd 100644
--- a/OpenSim/Region/CoreModules/Scripting/DynamicTexture/DynamicTextureModule.cs
+++ b/OpenSim/Region/CoreModules/Scripting/DynamicTexture/DynamicTextureModule.cs
@@ -143,6 +143,18 @@ namespace OpenSim.Region.CoreModules.Scripting.DynamicTexture
             return UUID.Zero;
         }
 
+
+        public void GetDrawStringSize(string contentType, string text, string fontName, int fontSize,
+                                      out double xSize, out double ySize)
+        {
+            xSize = 0;
+            ySize = 0;
+            if (RenderPlugins.ContainsKey(contentType))
+            {
+                RenderPlugins[contentType].GetDrawStringSize(text, fontName, fontSize, out xSize, out ySize);
+            }
+        }
+
         #endregion
 
         #region IRegionModule Members
diff --git a/OpenSim/Region/CoreModules/Scripting/LoadImageURL/LoadImageURLModule.cs b/OpenSim/Region/CoreModules/Scripting/LoadImageURL/LoadImageURLModule.cs
index 2eb8fc0..96618e0 100644
--- a/OpenSim/Region/CoreModules/Scripting/LoadImageURL/LoadImageURLModule.cs
+++ b/OpenSim/Region/CoreModules/Scripting/LoadImageURL/LoadImageURLModule.cs
@@ -84,6 +84,13 @@ namespace OpenSim.Region.CoreModules.Scripting.LoadImageURL
             return false;
         }
 
+        public void GetDrawStringSize(string text, string fontName, int fontSize, 
+                                      out double xSize, out double ySize)
+        {
+            xSize = 0;
+            ySize = 0;
+        }
+
         #endregion
 
         #region IRegionModule Members
diff --git a/OpenSim/Region/CoreModules/Scripting/VectorRender/VectorRenderModule.cs b/OpenSim/Region/CoreModules/Scripting/VectorRender/VectorRenderModule.cs
index 6a348a3..c3e39ad 100644
--- a/OpenSim/Region/CoreModules/Scripting/VectorRender/VectorRenderModule.cs
+++ b/OpenSim/Region/CoreModules/Scripting/VectorRender/VectorRenderModule.cs
@@ -89,6 +89,20 @@ namespace OpenSim.Region.CoreModules.Scripting.VectorRender
             return true;
         }
 
+        public void GetDrawStringSize(string text, string fontName, int fontSize, 
+                                      out double xSize, out double ySize)
+        {
+            Bitmap bitmap = new Bitmap(1024, 1024, PixelFormat.Format32bppArgb);
+            Graphics graph = Graphics.FromImage(bitmap);
+
+            Font myFont = new Font(fontName, fontSize);
+            SizeF stringSize = new SizeF();
+            stringSize = graph.MeasureString(text, myFont);
+            xSize = stringSize.Width;
+            ySize = stringSize.Height;
+        }
+
+
         #endregion
 
         #region IRegionModule Members
-- 
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