IGUIEnvironment::hasFocus has now a parameter checkSubElements as subelements...

IGUIEnvironment::hasFocus has now a parameter checkSubElements as subelements are usually seen as part of an element. Default unfortunately must be false due to backward compatibility.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@4465 dfc29bdd-3216-0410-991c-e03cc46cb475

changes.txt

 --------------------------
 Changes in 1.9 (not yet released)
-
+
+- IGUIEnvironment::hasFocus has now a parameter checkSubElements as subelements are usually seen as part of an element. Default unfortunately must be false due to backward compatibility.
 - Add IGUIElement::isTrulyVisible which works like ISceneNode::isTrulyVisible and checks for parent visibility as well.
 - Improved DDS loader and added support for DXTn (DXT1-5) compressed textures in OpenGL and Direct3D9 drivers.
 - Add function ISceneNode::getTransformedBoundingBoxEdges.

include/IGUIEnvironment.h

@@ -103,8 +103,9 @@ public:
 
 	//! Returns whether the element has focus
 	/** \param element Pointer to the element which is tested.
+	\param checkSubElements When true and focus is on a sub-element of element then it will still count as focused and return true
 	\return True if the element has focus, else false. */
-	virtual bool hasFocus(IGUIElement* element) const = 0;
+	virtual bool hasFocus(IGUIElement* element, bool checkSubElements=false) const = 0;
 
 	//! Returns the current video driver.
 	/** \return Pointer to the video driver. */

source/Irrlicht/CGUIButton.cpp

@@ -175,8 +175,8 @@ bool CGUIButton::OnEvent(const SEvent& event)
 			if (Environment->hasFocus(this) &&
 				!AbsoluteClippingRect.isPointInside(core::position2d<s32>(event.MouseInput.X, event.MouseInput.Y)))
 			{
-					Environment->removeFocus(this);
-					return false;
+				Environment->removeFocus(this);
+				return false;
 			}
 
 			if (!IsPushButton)

source/Irrlicht/CGUIEnvironment.cpp

@@ -329,11 +329,24 @@ bool CGUIEnvironment::removeFocus(IGUIElement* element)
 }
 
 
-//! Returns if the element has focus
-bool CGUIEnvironment::hasFocus(IGUIElement* element) const
+//! Returns whether the element has focus
+bool CGUIEnvironment::hasFocus(IGUIElement* element, bool checkSubElements) const
 {
 	_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
-	return (element == Focus);
+	if (element == Focus)
+		return true;
+
+	if ( !checkSubElements || !element )
+		return false;
+
+	IGUIElement* f = Focus;
+	while ( f && f->isSubElement() )
+	{
+		f = f->getParent();
+		if ( f == element )
+			return true;
+	}
+	return false;
 }
 
 

source/Irrlicht/CGUIEnvironment.h

@@ -187,7 +187,7 @@ public:
 	virtual bool removeFocus(IGUIElement* element);
 
 	//! Returns if the element has focus
-	virtual bool hasFocus(IGUIElement* element) const;
+	virtual bool hasFocus(IGUIElement* element, bool checkSubElements=false) const;
 
 	//! Returns the element with the focus
 	virtual IGUIElement* getFocus() const;