toolkit/source/awt/scrollabledialog.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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  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 #include <toolkit/awt/scrollabledialog.hxx>
  21 #include <vcl/group.hxx>
  22 #include <vcl/settings.hxx>
  23
  24 namespace toolkit
  25 {
  26
  27 // Using  WB_AUTOHSCROLL, WB_AUTOVSCROLL here sucks big time, there is a
  28 // problem in the toolkit class where there are some clashing IDs
  29 // ( css::awt::VclWindowPeerAttribute::VSCROLL has the same value
  30 // as css::awt::WindowAttribute::NODECORATION and they are used
  31 // in the same bitmap :-( WB_VSCROLL & WB_HSCROLL apparently are only for
  32 // child classes ( whole thing is a mess if you ask me )
  33 template< class T>
  34 ScrollableWrapper<T>::ScrollableWrapper( vcl::Window* pParent, WinBits nStyle, Dialog::InitFlag eFlag )
  35     : T( pParent, nStyle & ~( WB_AUTOHSCROLL | WB_AUTOVSCROLL ), eFlag ),
  36       maHScrollBar( VclPtr<ScrollBar>::Create(this, WB_HSCROLL | WB_DRAG) ),
  37       maVScrollBar( VclPtr<ScrollBar>::Create(this, WB_VSCROLL | WB_DRAG) ),
  38       mbHasHoriBar( false ),
  39       mbHasVertBar( false ),
  40       maScrollVis( None )
  41 {
  42     Link<ScrollBar*,void> aLink( LINK( this, ScrollableWrapper, ScrollBarHdl ) );
  43     maVScrollBar->SetScrollHdl( aLink );
  44     maHScrollBar->SetScrollHdl( aLink );
  45
  46     ScrollBarVisibility aVis = None;
  47
  48     if ( nStyle & ( WB_AUTOHSCROLL | WB_AUTOVSCROLL ) )
  49     {
  50         if ( nStyle & WB_AUTOHSCROLL )
  51             aVis = Hori;
  52         if ( nStyle &  WB_AUTOVSCROLL )
  53         {
  54             if ( aVis == Hori )
  55                 aVis = Both;
  56             else
  57                 aVis = Vert;
  58         }
  59     }
  60     setScrollVisibility( aVis );
  61     mnScrWidth = T::GetSettings().GetStyleSettings().GetScrollBarSize();
  62 }
  63
  64 template< class T>
  65 void ScrollableWrapper<T>::setScrollVisibility( ScrollBarVisibility rVisState )
  66 {
  67     maScrollVis = rVisState;
  68     if (  maScrollVis == Hori || maScrollVis == Both )
  69     {
  70         mbHasHoriBar = true;
  71         maHScrollBar->Show();
  72     }
  73     if ( maScrollVis == Vert || maScrollVis == Both )
  74     {
  75         mbHasVertBar = true;
  76         maVScrollBar->Show();
  77     }
  78     if ( mbHasHoriBar || mbHasVertBar )
  79         this->SetStyle( T::GetStyle() | WB_CLIPCHILDREN | WB_AUTOSIZE );
  80 }
  81
  82 template< class T>
  83 ScrollableWrapper<T>::~ScrollableWrapper()
  84 {
  85     T::disposeOnce();
  86 }
  87
  88 template< class T>
  89 void ScrollableWrapper<T>::dispose()
  90 {
  91     maHScrollBar.disposeAndClear();
  92     maVScrollBar.disposeAndClear();
  93     T::dispose();
  94 }
  95
  96 template< class T>
  97 void ScrollableWrapper<T>::lcl_Scroll( long nX, long nY )
  98 {
  99     long nXScroll = mnScrollPos.X() - nX;
 100     long nYScroll = mnScrollPos.Y() - nY;
 101     mnScrollPos = Point( nX, nY );
 102
 103     Rectangle aScrollableArea( 0, 0, maScrollArea.Width(), maScrollArea.Height() );
 104     T::Scroll(nXScroll, nYScroll, aScrollableArea );
 105     // Manually scroll all children ( except the scrollbars )
 106     for ( int index = 0; index < T::GetChildCount(); ++index )
 107     {
 108         vcl::Window* pChild = T::GetChild( index );
 109         if ( pChild && pChild != maVScrollBar.get() && pChild != maHScrollBar.get() )
 110         {
 111             Point aPos = pChild->GetPosPixel();
 112             aPos += Point( nXScroll, nYScroll );
 113             pChild->SetPosPixel( aPos );
 114         }
 115     }
 116 }
 117
 118 //Can't use IMPL_LINK_TYPED with the template
 119 //IMPL_LINK_TYPED( ScrollableWrapper, ScrollBarHdl, ScrollBar*, pSB, void )
 120
 121 template< class T>
 122 void ScrollableWrapper<T>::LinkStubScrollBarHdl( void* pThis, ScrollBar* pCaller)
 123 {
 124     static_cast<ScrollableWrapper<T>*>(pThis)->ScrollBarHdl( static_cast<ScrollBar*>(pCaller) );
 125 }
 126
 127 template< class T>
 128 void ScrollableWrapper<T>::ScrollBarHdl( ScrollBar* pSB )
 129 {
 130     sal_uInt16 nPos = (sal_uInt16) pSB->GetThumbPos();
 131     if( pSB == maVScrollBar.get() )
 132         lcl_Scroll(mnScrollPos.X(), nPos );
 133     else if( pSB == maHScrollBar.get() )
 134         lcl_Scroll(nPos, mnScrollPos.Y() );
 135 }
 136
 137 template< class T>
 138 void ScrollableWrapper<T>::SetScrollTop( long nTop )
 139 {
 140     Point aOld = mnScrollPos;
 141     lcl_Scroll( mnScrollPos.X() , mnScrollPos.Y() - nTop );
 142     maHScrollBar->SetThumbPos( 0 );
 143     // new pos is 0,0
 144     mnScrollPos = aOld;
 145 }
 146 template< class T>
 147 void ScrollableWrapper<T>::SetScrollLeft( long nLeft )
 148 {
 149     Point aOld = mnScrollPos;
 150     lcl_Scroll( mnScrollPos.X() - nLeft , mnScrollPos.Y() );
 151     maVScrollBar->SetThumbPos( 0 );
 152     // new pos is 0,0
 153     mnScrollPos = aOld;
 154 }
 155 template< class T>
 156 void ScrollableWrapper<T>::SetScrollWidth( long nWidth )
 157 {
 158     maScrollArea.Width() = nWidth;
 159     ResetScrollBars();
 160 }
 161
 162 template< class T>
 163 void ScrollableWrapper<T>::SetScrollHeight( long nHeight )
 164 {
 165     maScrollArea.Height() = nHeight;
 166     ResetScrollBars();
 167 }
 168
 169 template< class T>
 170 void ScrollableWrapper<T>::Resize()
 171 {
 172     ResetScrollBars();
 173 }
 174
 175 template< class T>
 176 void ScrollableWrapper<T>::ResetScrollBars()
 177 {
 178     Size aOutSz = T::GetOutputSizePixel();
 179
 180     Point aVPos( aOutSz.Width() - mnScrWidth, 0 );
 181     Point aHPos( 0, aOutSz.Height() - mnScrWidth );
 182
 183     maVScrollBar->SetPosSizePixel( aVPos, Size( mnScrWidth,  T::GetSizePixel().Height() - mnScrWidth ) );
 184     maHScrollBar->SetPosSizePixel( aHPos, Size(  T::GetSizePixel().Width() - mnScrWidth, mnScrWidth ) );
 185
 186     maHScrollBar->SetRangeMax( maScrollArea.Width() + mnScrWidth  );
 187     maHScrollBar->SetVisibleSize( T::GetSizePixel().Width() );
 188
 189     maVScrollBar->SetRangeMax( maScrollArea.Height() + mnScrWidth );
 190     maVScrollBar->SetVisibleSize( T::GetSizePixel().Height() );
 191 }
 192
 193 template class ScrollableWrapper< Dialog >;
 194
 195 } // toolkit
 196 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */