sw/source/ui/uiview/scroll.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20
  21 #include "swtypes.hxx"
  22 #include "swrect.hxx"
  23 #include "scroll.hxx"
  24
  25 #define SCROLL_LINE_SIZE 250
  26
  27
  28 SwScrollbar::SwScrollbar( Window *pWin, sal_Bool bHoriz ) :
  29     ScrollBar( pWin,
  30     WinBits( WB_3DLOOK | WB_HIDE | ( bHoriz ? WB_HSCROLL : WB_VSCROLL)  ) ),
  31     bHori( bHoriz ),
  32     bAuto( sal_False ),
  33     bVisible(sal_False),
  34     bSizeSet(sal_False)
  35 {
  36     // SSA: --- RTL --- no mirroring for horizontal scrollbars
  37     if( bHoriz )
  38         EnableRTL( sal_False );
  39 }
  40
  41
  42  SwScrollbar::~SwScrollbar() {}
  43
  44 /*------------------------------------------------------------------------
  45  Beschreibung:  wird nach einer Aenderung der Dokumentgroesse gerufen, um den
  46                 Range des Scrollbars neu einzustellen.
  47 ------------------------------------------------------------------------*/
  48
  49 void SwScrollbar::DocSzChgd( const Size &rSize )
  50 {
  51     aDocSz = rSize;
  52     SetRange( Range( 0, bHori ? rSize.Width() : rSize.Height()) );
  53     const sal_uLong nVisSize = GetVisibleSize();
  54     SetLineSize( SCROLL_LINE_SIZE );
  55     SetPageSize( nVisSize * 77 / 100 );
  56 }
  57
  58 /*------------------------------------------------------------------------
  59  Beschreibung:  wird nach einer Veraenderung des sichtbaren Ausschnittes
  60                 gerufen.
  61 ------------------------------------------------------------------------*/
  62
  63
  64 void SwScrollbar::ViewPortChgd( const Rectangle &rRect )
  65 {
  66     long nThumb, nVisible;
  67     if( bHori )
  68     {
  69         nThumb = rRect.Left();
  70         nVisible = rRect.GetWidth();
  71     }
  72     else
  73     {
  74         nThumb = rRect.Top();
  75         nVisible = rRect.GetHeight();
  76     }
  77
  78     SetVisibleSize( nVisible );
  79     DocSzChgd(aDocSz);
  80     SetThumbPos( nThumb );
  81     if(bAuto)
  82         AutoShow();
  83 }
  84
  85 void SwScrollbar::ExtendedShow( sal_Bool bSet )
  86 {
  87     bVisible = bSet;
  88     if( (!bSet ||  !bAuto) && IsUpdateMode() && bSizeSet)
  89         ScrollBar::Show(bSet);
  90 }
  91
  92 void SwScrollbar::SetPosSizePixel( const Point& rNewPos, const Size& rNewSize )
  93 {
  94     ScrollBar::SetPosSizePixel(rNewPos, rNewSize);
  95     bSizeSet = sal_True;
  96     if(bVisible)
  97         ExtendedShow();
  98
  99 }
 100
 101 void SwScrollbar::SetAuto(sal_Bool bSet)
 102 {
 103     if(bAuto != bSet)
 104     {
 105         bAuto = bSet;
 106
 107         // automatisch versteckt - dann anzeigen
 108         if(!bAuto && bVisible && !ScrollBar::IsVisible())
 109             ExtendedShow(sal_True);
 110         else if(bAuto)
 111             AutoShow(); // oder automatisch verstecken
 112     }
 113 }
 114
 115 void SwScrollbar::AutoShow()
 116 {
 117     long nVis = GetVisibleSize();
 118     long nLen = GetRange().Len();
 119         if( nVis >= nLen - 1)
 120         {
 121             if(ScrollBar::IsVisible())
 122                 ScrollBar::Show(sal_False);
 123         }
 124         else if ( !ScrollBar::IsVisible() )
 125         {
 126             ScrollBar::Show(sal_True);
 127         }
 128 }
 129
 130 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */