library: libGui
#include "TGScrollBar.h"

TGScrollBar

class description - header file - source file - inheritance tree (.pdf)

class TGScrollBar : public TGFrame, public TGWidget

Inheritance Chart:
TObject
<-
TGObject
<-
TGWindow
TQObject
<-
TGFrame
TGWidget
<-
TGScrollBar
<-
TGHScrollBar
TGVScrollBar
 
    This is an abstract class, constructors will not be documented.
    Look at the header to check for available constructors.

    public:

                  virtual ~TGScrollBar()
             virtual void ChangeBackground(Pixel_t back)
           static TClass* Class()
             virtual void DrawBorder()
          static Pixmap_t GetBckgndPixmap()
      TGScrollBarElement* GetHead() const
            virtual Int_t GetPageSize() const
            virtual Int_t GetPosition() const
            virtual Int_t GetRange() const
             static Int_t GetScrollBarWidth()
      TGScrollBarElement* GetSlider() const
      TGScrollBarElement* GetTail() const
                     void GrabPointer(Bool_t grab)
           virtual Bool_t HandleButton(Event_t* event)
           virtual Bool_t HandleMotion(Event_t* event)
           virtual Bool_t HandleTimer(TTimer* t)
          virtual TClass* IsA() const
             virtual void Layout()
             virtual void MapSubwindows()
             virtual void MoveResize(Int_t x, Int_t y, UInt_t w = 0, UInt_t h = 0)
             virtual void PageSizeChanged(Int_t range)
             virtual void PositionChanged(Int_t pos)
             virtual void RangeChanged(Int_t range)
             virtual void Resize(UInt_t w = 0, UInt_t h = 0)
             virtual void Resize(TGDimension size)
             virtual void SetPosition(Int_t pos)
             virtual void SetRange(Int_t range, Int_t page_size)
             virtual void ShowMembers(TMemberInspector& insp, char* parent)
             virtual void Streamer(TBuffer& b)
                     void StreamerNVirtual(TBuffer& b)

Data Members


    protected:

                    Int_t fX0               
                    Int_t fY0               current slider position in pixels
                    Int_t fXp               
                    Int_t fYp               previous slider position in pixels
                   Bool_t fDragging         in dragging mode?
                   Bool_t fGrabPointer      grab pointer when dragging
                    Int_t fRange            logical upper range of scrollbar
                    Int_t fPsize            logical page size of scrollbar
                    Int_t fPos              logical current position
                    Int_t fSliderSize       logical slider size
                    Int_t fSliderRange      logical slider range
      TGScrollBarElement* fHead             head button of scrollbar
      TGScrollBarElement* fTail             tail button of scrollbar
      TGScrollBarElement* fSlider           slider
         const TGPicture* fHeadPic          picture in head (up or left arrow)
         const TGPicture* fTailPic          picture in tail (down or right arrow)
                  TTimer* fRepeat           repeat rate timer (when mouse stays pressed)
                 Window_t fSubw             sub window in which mouse is pressed
          static Pixmap_t fgBckgndPixmap    
             static Int_t fgScrollBarWidth

Class Description

                                                                      
 TGScrollBar and TGScrollBarElement                                   
                                                                      
 The classes in this file implement scrollbars. Scrollbars can be     
 either placed horizontal or vertical. A scrollbar contains three     
 TGScrollBarElements: The "head", "tail" and "slider". The head and   
 tail are fixed at either end and have the typical arrows in them.    
                                                                      
 The TGHScrollBar will generate the following event messages:         
 kC_HSCROLL, kSB_SLIDERPOS, position, 0                               
 kC_HSCROLL, kSB_SLIDERTRACK, position, 0                             
                                                                      
 The TGVScrollBar will generate the following event messages:         
 kC_VSCROLL, kSB_SLIDERPOS, position, 0                               
 kC_VSCROLL, kSB_SLIDERTRACK, position, 0
~TGScrollBar()
 Delete a scrollbar (either horizontal or vertical).
Bool_t HandleTimer(TTimer *t)
 Handle repeat timer for horizontal or vertical scrollbar. Every time
 timer times out we move slider.
Pixmap_t GetBckgndPixmap()
 Static method returning scrollbar background pixmap.
Int_t GetScrollBarWidth()
 Static method returning the scrollbar width.
void ChangeBackground(Pixel_t back)
 Change background color
void DrawBorder()


void GrabPointer(Bool_t grab)




Bool_t HandleButton(Event_t *event)




Bool_t HandleMotion(Event_t *event)




void Layout()




void SetRange(Int_t range, Int_t page_size)




void SetPosition(Int_t pos)




Int_t GetPosition()




Int_t GetPageSize()




Int_t GetRange()




void Resize(UInt_t w = 0, UInt_t h = 0)




void MoveResize(Int_t x, Int_t y, UInt_t w = 0, UInt_t h = 0)




void Resize(TGDimension size)




void MapSubwindows()




void PositionChanged(Int_t pos)




void RangeChanged(Int_t range)




void PageSizeChanged(Int_t range)







Author: Fons Rademakers 10/01/98

Last update: root/gui:$Name:  $:$Id: TGScrollBar.cxx,v 1.19 2006/07/03 16:10:45 brun Exp $

Copyright  (C) 1995-2000, Rene Brun and Fons Rademakers.               *









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