Vscroll and Hscroll

Vscroll and Hscroll

Postby Silvio » Wed Mar 04, 2009 11:53 pm

With this test I can move on vertical and Horizontal many controls on a dialog

But with this methos I cam move all controls into this dialog

I want NOT move the buttonbar on this dialog

it is possible ?



Code: Select all  Expand view

#Include "FiveWin.Ch"


#define BMP_H         18
#define BMP_V         18

#define TOTX          50
#define TOTY          30

#define D_WIDTH           4
#define D_HEIGHT          13
Static oScrWnd



Function Test()
  Local oDlg ,nY,nX
  Local aBmps := ARRAY( TOTY, TOTX )
  Local aData := ARRAY( TOTY, TOTX )
  Local nRow:=50
  Local nCol:=0

  DEFINE DIALOG oDlg  from 10,5 to 70,150  Title "test"


    oDlg:nStyle:= NOR( oDlg:nStyle, WS_VSCROLL )
    oDlg:nStyle:= NOR( oDlg:nStyle, WS_HSCROLL )


For nY := 1 to TOTY
   For nX := 1 To TOTX
         @ nrow, ncol  BITMAP aBmps[ nY, nX ] RESOURCE "VACIO" OF oDlg ;
                 SIZE  BMP_H,BMP_V PIXEL

  ncol:=ncol+BMP_V
 Next nX
nCol := 0
nrow:=nRow+BMP_H
Next nY


Activate dialog oDlg ON INIT (crea_bar(oDlg),( oScrWnd:=TScrWnd():New(oDlg,1,300,1,500) )  )

 RETURN NIL

function crea_bar(oDlg)
   Local obar

         DEFINE BUTTONBAR oBar OF oDlg SIZE 60, 60 2007

   DEFINE BUTTON OF oBar  ;
      RESOURCE "attach" PROMPT "Attach" TOOLTIP "Attach"

    RETURN NIL

//============================================================================
// FileName : SCROLL.PRG
// Purpose  :  Windows Scroll Class
// Author   : Eric Yang
// Update History :
//      Date     Contents
//    ---------- ---------------------------------------------------------------
//    1997.02.01
//
//============================================================================
#include "FiveWin.ch"

#ifndef TRUE
   #define TRUE              .T.
   #define FALSE             .F.
#endif

CLASS TScrWnd

   DATA oWnd
   DATA nVPos,nHPos

   METHOD New( oWnd,nV1,nV2,nH1,nH2 ) CONSTRUCTOR
   METHOD SetScroll( nV1,nV2,nH1,nH2 )
   //-*------------------------------------------------------------
   METHOD VScroll()
   METHOD VScrollThumb()
   METHOD VScrollTrack()
   METHOD VScrollPgDown()
   METHOD VScrollPgUp()
   //-*-----------------------------
   METHOD HScroll()
   METHOD HScrollThumb()
   METHOD HScrollTrack()
   METHOD HScrollPgDown()
   METHOD HScrollPgUp()

ENDCLASS

METHOD New( oWnd,nV1,nV2,nH1,nH2 ) CLASS TScrWnd
   ::nVPos := 0
   ::nHPos := 0
   ::oWnd := oWnd
   ::SetScroll( nV1,nV2,nH1,nH2 )
RETURN Self


METHOD SetScroll( nV1,nV2,nH1,nH2 ) CLASS TScrWnd
LOCAL aCoors1:={},aCoors2:={}
   //--------------------------------------------------
   //-* Vertical Scroll Bar
//   ? ::oWnd:oVSCroll=NIL
   if ::oWnd:oVScroll != NIL
//    ? nV1,nV2
      ::oWnd:oVScroll:SetRange( nV1,nV2 )
      ::nVPos := ::oWnd:oVScroll:GetPos()
      ::oWnd:oVScroll:bGoDown   := {|| ::VScroll() }
      ::oWnd:oVScroll:bGoUp     := {|| ::VScroll() }
      ::oWnd:oVScroll:bPageUp   := {|| ::VScrollPgUp() }
      ::oWnd:oVScroll:bPageDown := {|| ::VScrollPgDown() }
      ::oWnd:oVScroll:bGoTop    := {|| ::VScroll() }
      ::oWnd:oVScroll:bGoBottom := {|| ::VScroll() }
      ::oWnd:oVScroll:nPgStep   := 10
      //::oWnd:oVScroll:lReDraw := TRUE
      ::oWnd:oVScroll:bPos      := {|nPos| ::VScrollThumb(nPos) }
      ::oWnd:oVScroll:bTrack    := {|nPos| ::VScrollTrack(nPos) }
   endif
   //--------------------------------------------------
   //-* Horizontal Scroll Bar
   if ::oWnd:oHScroll != NIL
      ::oWnd:oHScroll:SetRange( nH1,nH2 )
      ::nHPos := ::oWnd:oHScroll:GetPos()
      ::oWnd:oHScroll:bGoDown   := {|| ::HScroll() }
      ::oWnd:oHScroll:bGoUp     := {|| ::HScroll() }
      ::oWnd:oHScroll:bPageUp   := {|| ::HScrollPgUp() }
      ::oWnd:oHScroll:bPageDown := {|| ::HScrollPgDown() }
      ::oWnd:oHScroll:bGoTop    := {|| ::HScroll() }
      ::oWnd:oHScroll:bGoBottom := {|| ::HScroll() }
      ::oWnd:oHScroll:nPgStep   := 10
      //::oWnd:oHScroll:lReDraw := TRUE
      ::oWnd:oHScroll:bPos      := {|nPos| ::HScrollThumb(nPos) }
      ::oWnd:oHScroll:bTrack    := {|nPos| ::HScrollTrack(nPos) }
   endif
   //::oWnd:bKeyChar := {|nKey,nFlags| ScrollKey(nKey) }
   //--------------------------------------------------
RETURN( NIL )

//STATIC FUNCTION ScrollKey(nKey)
   //MsgInfo( "Key : "+str(nKey,10) )
   //if nKey == K_ENTER
   //   goMainDlg:End()
   //   lRetVal := TRUE
   //endif
//RETURN( NIL )

//=================================================================
//-* Vertical Scroll Bar
METHOD VScroll() CLASS TScrWnd
LOCAL nNewPos
   if ::nVPos >= ::oWnd:oVScroll:nMin   ;
      .and. ::nVPos <= ::oWnd:oVScroll:nMax
      nNewPos := ::oWnd:oVScroll:GetPos()
      SysRefresh()

      ScrollWindow( ::oWnd:hWnd, 0,  ;
         (  ::nVPos-nNewPos )*D_HEIGHT,    ;
         0 , GetClientRect(::oWnd:hWnd) )
      ::nVPos := nNewPos
   endif
RETURN( NIL )

METHOD VScrollThumb(nNewPos) CLASS TScrWnd
   if ::nVPos >= ::oWnd:oVScroll:nMin   ;
      .and. ::nVPos <= ::oWnd:oVScroll:nMax
      ::oWnd:oVScroll:SetPos(nNewPos)
      SysRefresh()
      ScrollWindow( ::oWnd:hWnd, 0,  ;
         (::nVPos - nNewPos )*D_HEIGHT,    ;
         0 , GetClientRect(::oWnd:hWnd) )
      ::nVPos := nNewPos
   endif
RETURN( NIL )

METHOD VScrollTrack(nNewPos) CLASS TScrWnd
   if ::nVPos >= ::oWnd:oVScroll:nMin   ;
      .and. ::nVPos <= ::oWnd:oVScroll:nMax
      ::oWnd:oVScroll:SetPos(nNewPos)
      SysRefresh()
      ScrollWindow( ::oWnd:hWnd, 0,  ;
         (::nVPos - nNewPos )*D_HEIGHT,    ;
         0 , GetClientRect(::oWnd:hWnd) )
      ::nVPos := nNewPos
   endif
RETURN( NIL )

METHOD VScrollPgDown() CLASS TScrWnd
LOCAL nNewPos
   if ::nVPos < ::oWnd:oVScroll:nMax
      nNewPos := ::nVPos + ::oWnd:oVScroll:nPgStep
      nNewPos := iif(nNewPos > ::oWnd:oVScroll:nMax, ::oWnd:oVScroll:nMax, nNewPos)
      SysRefresh()
      ScrollWindow( ::oWnd:hWnd, 0,  ;
         ( ::nVPos - nNewPos )*D_HEIGHT,    ;
         0 , GetClientRect(::oWnd:hWnd) )
      ::nVPos := nNewPos
   endif
RETURN( NIL )

METHOD VScrollPgUp() CLASS TScrWnd
LOCAL nNewPos
   if ::nVPos > ::oWnd:oVScroll:nMin
      nNewPos := ::nVPos - ::oWnd:oVScroll:nPgStep
      nNewPos := iif(nNewPos < ::oWnd:oVScroll:nMin,::oWnd:oVScroll:nMin,nNewPos)
      SysRefresh()
      ScrollWindow( ::oWnd:hWnd, 0,  ;
         ( ::nVPos - nNewPos )*D_HEIGHT,    ;
         0 , GetClientRect(::oWnd:hWnd) )
      ::nVPos := nNewPos
   endif
RETURN( NIL )

//=================================================================
//-* Horizontal Scroll Bar
METHOD HScroll() CLASS TScrWnd
LOCAL nNewPos
   if ::nHPos >= ::oWnd:oHScroll:nMin   ;
      .and. ::nHPos <= ::oWnd:oHScroll:nMax
      nNewPos := ::oWnd:oHScroll:GetPos()
      SysRefresh()
      ScrollWindow( ::oWnd:hWnd,           ;
         (::nHPos - nNewPos )*D_WIDTH,0,   ;
         0 , GetClientRect(::oWnd:hWnd) )
      ::nHPos := nNewPos
   endif
RETURN( NIL )

METHOD HScrollThumb(nNewPos) CLASS TScrWnd
   if ::nHPos >= ::oWnd:oHScroll:nMin   ;
      .and. ::nHPos <= ::oWnd:oHScroll:nMax
      ::oWnd:oHScroll:SetPos(nNewPos)
      SysRefresh()
      ScrollWindow( ::oWnd:hWnd,           ;
         (::nHPos - nNewPos )*D_WIDTH,0,   ;
         0 , GetClientRect(::oWnd:hWnd) )
      ::nHPos := nNewPos
   endif
RETURN( NIL )

METHOD HScrollTrack(nNewPos) CLASS TScrWnd
   if ::nHPos >= ::oWnd:oHScroll:nMin   ;
      .and. ::nHPos <= ::oWnd:oHScroll:nMax
      ::oWnd:oHScroll:SetPos(nNewPos)
      SysRefresh()
      ScrollWindow( ::oWnd:hWnd,           ;
         (::nHPos - nNewPos )*D_WIDTH,0,   ;
         0 , GetClientRect(::oWnd:hWnd) )
      ::nHPos := nNewPos
   endif
RETURN( NIL )

METHOD HScrollPgDown() CLASS TScrWnd
LOCAL nNewPos
   if ::nHPos < ::oWnd:oHScroll:nMax
      nNewPos := ::nHPos + ::oWnd:oHScroll:nPgStep
      nNewPos := iif(nNewPos > ::oWnd:oHScroll:nMax, ::oWnd:oHScroll:nMax, nNewPos)
      SysRefresh()
      ScrollWindow( ::oWnd:hWnd,           ;
         ( ::nHPos - nNewPos )*D_WIDTH,0,  ;
         0 , GetClientRect(::oWnd:hWnd) )
      ::nHPos := nNewPos
   endif
RETURN( NIL )

METHOD HScrollPgUp() CLASS TScrWnd
LOCAL nNewPos
   if ::nHPos > ::oWnd:oHScroll:nMin
      nNewPos := ::nHPos - ::oWnd:oHScroll:nPgStep
      nNewPos := iif(nNewPos < ::oWnd:oHScroll:nMin,::oWnd:oHScroll:nMin,nNewPos)
      SysRefresh()
      ScrollWindow( ::oWnd:hWnd,           ;
         ( ::nHPos - nNewPos )*D_WIDTH,0,  ;
         0 , GetClientRect(::oWnd:hWnd) )
      ::nHPos := nNewPos
   endif
RETURN( NIL )







 


With Delphi Language I saw ( and also daniel Gill saw it) there is a class window with vertical and Horizontal scrollbar and If the user put the mpuse on center of this window can move the window as happened when you move a PDF File with Hand cursor and it is very nice

Why this method cannot create with our fwh language ?
thanks in advance
Best Regards, Saludos

Falconi Silvio
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Silvio
 
Posts: 3107
Joined: Fri Oct 07, 2005 6:28 pm
Location: Teramo,Italy

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