Add IGUIEnvironment::removeFont (requested regularly).

Note: Currently we still will have the font-texture for CGUIFont's in the cache afterward.
But that needs a more general mechanims that allows cleaning up textures easier when the last one has been removed.


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@3465 dfc29bdd-3216-0410-991c-e03cc46cb475

changes.txt

 Changes in 1.8 (??.0?.2010)
 
+ - Add function IGUIEnvironment::removeFont
+
  - Functions in IMeshCache expecting IAnimatedMesh* parameters removed as similar functions with IMesh* can be used since a while. Fixes also problems when IAnimatedMesh* got upcasted to IMesh*. (thx @ Greenya for reporting)
 
  - The following functions will now use a "ISceneNode *" instead of a "const ISceneNode *":

include/IGUIEnvironment.h

@@ -174,6 +174,9 @@ public:
 	\return Pointer to the font stored. This can differ from given parameter if the name previously existed. */
 	virtual IGUIFont* addFont(const io::path& name, IGUIFont* font) = 0;
 
+	//! remove loaded font
+	virtual void removeFont(IGUIFont* font) = 0;
+
 	//! Returns the default built-in font.
 	/** \return Pointer to the default built-in font.
 	This pointer should not be dropped. See IReferenceCounted::drop() for

source/Irrlicht/CGUIEnvironment.cpp

@@ -1481,6 +1481,21 @@ IGUIFont* CGUIEnvironment::addFont(const io::path& name, IGUIFont* font)
 	return font;
 }
 
+//! remove loaded font
+void CGUIEnvironment::removeFont(IGUIFont* font)
+{
+	if ( !font )
+		return;
+	for ( u32 i=0; i<Fonts.size(); ++i )
+	{
+		if ( Fonts[i].Font == font )
+		{
+			Fonts[i].Font->drop();
+			Fonts.erase(i);
+			return;
+		}
+	}
+}
 
 //! returns default font
 IGUIFont* CGUIEnvironment::getBuiltInFont() const

source/Irrlicht/CGUIEnvironment.h

@@ -80,6 +80,9 @@ public:
 	//! add an externally loaded font
 	virtual IGUIFont* addFont(const io::path& name, IGUIFont* font);
 
+	//! remove loaded font
+	virtual void removeFont(IGUIFont* font);
+
 	//! returns default font
 	virtual IGUIFont* getBuiltInFont() const;