TGView


class description - source file - inheritance tree

class TGView : public TGCompositeFrame, public TGWidget


    protected:
public:
TGView TGView(const TGWindow* p, UInt_t w, UInt_t h, Int_t id = -1, UInt_t xMargin = 0, UInt_t yMargin = 0, UInt_t options = kSunkenFrame|kDoubleBorder, UInt_t sboptions = 0, ULong_t back = fgWhitePixel) TGView TGView(TGView&) virtual void ~TGView() static TClass* Class() virtual void Clear(Option_t*) virtual void DrawBorder() virtual void DrawRegion(Int_t x, Int_t y, UInt_t width, UInt_t height) virtual TGDimension GetDefaultSize() const virtual Bool_t HandleButton(Event_t* event) virtual Bool_t HandleCrossing(Event_t* event) virtual Bool_t HandleExpose(Event_t* event) virtual Bool_t HandleMotion(Event_t* event) virtual Bool_t HandleTimer(TTimer* t) virtual void HLayout() virtual TClass* IsA() const Bool_t IsMarked() const Bool_t IsSaved() virtual void Layout() virtual void Mark(Long_t xPos, Long_t yPos) virtual void Marked(Bool_t mark) virtual Bool_t ProcessMessage(Long_t msg, Long_t parm1, Long_t parm2) virtual Long_t ReturnHeighestColHeight() virtual Long_t ReturnLineCount() virtual Long_t ReturnLineLength(Long_t line) virtual Long_t ReturnLongestLineWidth() virtual void ScrollCanvas(Int_t newTop, Int_t direction) virtual void SetHsbPosition(Long_t newPos) virtual void SetSBRange(Int_t direction) virtual void SetVisibleStart(Int_t newTop, Int_t direction) virtual void SetVsbPosition(Long_t newPos) virtual void ShowMembers(TMemberInspector& insp, char* parent) virtual void Streamer(TBuffer& b) void StreamerNVirtual(TBuffer& b) virtual Long_t ToObjXCoord(Long_t xCoord, Long_t line) virtual Long_t ToObjYCoord(Long_t yCoord) virtual Long_t ToScrXCoord(Long_t xCoord, Long_t line) virtual Long_t ToScrYCoord(Long_t yCoord) virtual void UnMark() virtual void VLayout()

Data Members

protected:
TGLongPosition fMarkedStart start position of marked text TGLongPosition fMarkedEnd end position of marked text TGLongPosition fVisible position of visible region TGLongPosition fMousePos position of mouse TGLongPosition fScrollVal position of scrollbar Bool_t fIsMarked true if text is marked/selected Bool_t fIsMarking true if in marking mode Bool_t fIsSaved true is content is saved Int_t fScrolling scrolling direction Atom_t fClipboard clipboard property UInt_t fXMargin x margin UInt_t fYMargin y margin TGViewFrame* fCanvas frame containing the text TGHScrollBar* fHsb horizontal scrollbar TGVScrollBar* fVsb vertical scrollbar TViewTimer* fScrollTimer scrollbar timer GContext_t fWhiteGC graphics context used for scrolling static Atom_t fgClipboard public:
static const enum TObject:: kNoHSB static const enum TObject:: kNoVSB static const enum TObject:: kHorizontal static const enum TObject:: kVertical


See also

TGTextView

Class Description

                                                                      
 TGView                                                               
                                                                      
 A TGView provides the infrastructure for text viewer and editor      
 widgets. It provides a canvas (TGViewFrame) and (optionally) a       
 vertical and horizontal scrollbar and methods for marking and        
 scrolling.                                                           
                                                                      
 The TGView (and derivatives) will generate the following             
 event messages:                                                      
 kC_TEXTVIEW, kTXT_ISMARKED, widget id, [true|false]                  
 kC_TEXTVIEW, kTXT_DATACHANGE, widget id, 0                           
 kC_TEXTVIEW, kTXT_CLICK2, widget id, position (y << 16) | x)         
 kC_TEXTVIEW, kTXT_CLICK3, widget id, position (y << 16) | x)         
 kC_TEXTVIEW, kTXT_F3, widget id, true                                
 kC_TEXTVIEW, kTXT_OPEN, widget id, 0                                 
 kC_TEXTVIEW, kTXT_CLOSE, widget id, 0                                
 kC_TEXTVIEW, kTXT_SAVE, widget id, 0                                 
                                                                      


TGView(const TGWindow *p, UInt_t w, UInt_t h, Int_t id, UInt_t xMargin, UInt_t yMargin, UInt_t options, UInt_t sboptions, ULong_t back) : TGCompositeFrame(p, w, h, options, fgDefaultFrameBackground)
 Create an editor view, containing an TGEditorFrame and (optionally)
 a horizontal and vertical scrollbar.

~TGView()
 Delete view.

void Clear(Option_t *)
 Clear view.

void SetVisibleStart(Int_t newTop, Int_t direction)
 Scroll view in specified direction to make newTop the visible location.

Bool_t HandleExpose(Event_t *event)
 Handle expose events.

Bool_t HandleCrossing(Event_t *event)
 Handle mouse crossing event.

Bool_t HandleTimer(TTimer *)
 Handle scroll timer.

Bool_t HandleButton(Event_t *event)
 Handle mouse button event in text editor.

Bool_t HandleMotion(Event_t *event)
 Handle mouse motion event in the text editor widget.

Bool_t ProcessMessage(Long_t msg, Long_t parm1, Long_t)
 Process scrollbar messages.

void Layout()
 Layout the components of view.

void HLayout()
 Horizontal layout of widgets (canvas, scrollbar).

void VLayout()
 Vertical layout of widgets (canvas, scrollbar).

void SetSBRange(Int_t direction)
 Set the range for the kVertical or kHorizontal scrollbar.

void SetHsbPosition(Long_t newPos)
 Set position of horizontal scrollbar.

void SetVsbPosition(Long_t newPos)
 Set position of vertical scrollbar.

void DrawBorder()
 Draw the border of the text edit widget.

void ScrollCanvas(Int_t new_top, Int_t direction)
 Scroll the canvas to new_top in the kVertical or kHorizontal direction.



Inline Functions


        TGDimension GetDefaultSize() const
             Long_t ToObjXCoord(Long_t xCoord, Long_t line)
             Long_t ToObjYCoord(Long_t yCoord)
             Long_t ToScrXCoord(Long_t xCoord, Long_t line)
             Long_t ToScrYCoord(Long_t yCoord)
               void Mark(Long_t xPos, Long_t yPos)
               void UnMark()
               void DrawRegion(Int_t x, Int_t y, UInt_t width, UInt_t height)
             Long_t ReturnLineLength(Long_t line)
             Long_t ReturnLineCount()
             Long_t ReturnHeighestColHeight()
             Long_t ReturnLongestLineWidth()
             Bool_t IsMarked() const
             Bool_t IsSaved()
               void Marked(Bool_t mark)
            TClass* Class()
            TClass* IsA() const
               void ShowMembers(TMemberInspector& insp, char* parent)
               void Streamer(TBuffer& b)
               void StreamerNVirtual(TBuffer& b)
             TGView TGView(TGView&)


Author: Fons Rademakers 30/6/2000
Last update: root/gui:$Name: $:$Id: TGView.cxx,v 1.9 2000/10/22 19:28:58 rdm Exp $
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *


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