Further improvements to auto scrolling and text rect + container view resizing:

* Renaming things in Tracker list mode no longer magically grows the text view.
* ScrollToOffset() is not supposed to depend on the existence of any scroll
  bars, in R5 text views simply scroll to where they need to. This fixes
  renaming things in Tracker when hitting the window bounds (text widget stops
  growing and starts to autoscroll) and also the Text tool in WonderBrush.
* _ScrollToOffset() is therefor no longer needed.
* The insets of the text rect are not so interesting as the original width.
  In auto resizing mode, the original width is important when there is no
  container view. In this setup, the text rect auto resizing is mainly needed
  for auto scrolling, but it should never shrink below the original size.
* Further improved auto scrolling for right aligned and center aligned text
  views, it works like R5 now. Also take the line height into account when
  checking for the bounds bottom. Removed extra spacing for vertical
  scrolling.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24130 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/os/interface/TextView.h

@@ -205,8 +205,6 @@ class BTextView : public BView {
 		undo_state UndoState(bool* isRedo) const;
 
 	protected:
-		void _ScrollToOffset(int32 nOffset, bool useHorz, bool useVert);
-
 		virtual	void GetDragParameters(BMessage* drag, BBitmap** _bitmap,
 			BPoint* point, BHandler** _handler);
 
@@ -315,8 +313,7 @@ class BTextView : public BView {
 		_BLineBuffer_*			fLines;
 		_BStyleBuffer_*			fStyles;
 		BRect					fTextRect;
-		float					fLeftInset;
-		float					fRightInset;
+		float					fMinTextRectWidth;
 		int32					fSelStart;
 		int32					fSelEnd;
 		bool					fCaretVisible;
@@ -347,7 +344,7 @@ class BTextView : public BView {
 		BPoint					fWhere;
 		_BTextTrackState_*		fTrackingMouse;
 		_BTextChangeResult_*	fTextChange;
-		uint32					_reserved[7];
+		uint32					_reserved[8];
 
 		static _BWidthBuffer_*	sWidths;
 		static sem_id			sWidthSem;