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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <helper/scrollabledialog.hxx>
#include <vcl/settings.hxx>
namespace toolkit
{
// Using WB_AUTOHSCROLL, WB_AUTOVSCROLL here sucks big time, there is a
// problem in the toolkit class where there are some clashing IDs
// ( css::awt::VclWindowPeerAttribute::VSCROLL has the same value
// as css::awt::WindowAttribute::NODECORATION and they are used
// in the same bitmap :-( WB_VSCROLL & WB_HSCROLL apparently are only for
// child classes ( whole thing is a mess if you ask me )
ScrollableDialog::ScrollableDialog( vcl::Window* pParent, WinBits nStyle, Dialog::InitFlag eFlag )
: Dialog( pParent, nStyle & ~( WB_AUTOHSCROLL | WB_AUTOVSCROLL ), eFlag ),
maHScrollBar( VclPtr<ScrollBar>::Create(this, WB_HSCROLL | WB_DRAG) ),
maVScrollBar( VclPtr<ScrollBar>::Create(this, WB_VSCROLL | WB_DRAG) ),
mbHasHoriBar( false ),
mbHasVertBar( false ),
maScrollVis( None )
{
Link<ScrollBar*,void> aLink( LINK( this, ScrollableDialog, ScrollBarHdl ) );
maVScrollBar->SetScrollHdl( aLink );
maHScrollBar->SetScrollHdl( aLink );
ScrollBarVisibility aVis = None;
if ( nStyle & ( WB_AUTOHSCROLL | WB_AUTOVSCROLL ) )
{
if ( nStyle & WB_AUTOHSCROLL )
aVis = Hori;
if ( nStyle & WB_AUTOVSCROLL )
{
if ( aVis == Hori )
aVis = Both;
else
aVis = Vert;
}
}
setScrollVisibility( aVis );
mnScrWidth = Dialog::GetSettings().GetStyleSettings().GetScrollBarSize();
}
void ScrollableDialog::setScrollVisibility( ScrollBarVisibility rVisState )
{
maScrollVis = rVisState;
if ( maScrollVis == Hori || maScrollVis == Both )
{
mbHasHoriBar = true;
maHScrollBar->Show();
}
if ( maScrollVis == Vert || maScrollVis == Both )
{
mbHasVertBar = true;
maVScrollBar->Show();
}
if ( mbHasHoriBar || mbHasVertBar )
SetStyle( Dialog::GetStyle() | WB_CLIPCHILDREN );
}
ScrollableDialog::~ScrollableDialog()
{
disposeOnce();
}
void ScrollableDialog::dispose()
{
maHScrollBar.disposeAndClear();
maVScrollBar.disposeAndClear();
Dialog::dispose();
}
void ScrollableDialog::lcl_Scroll( long nX, long nY )
{
long nXScroll = mnScrollPos.X() - nX;
long nYScroll = mnScrollPos.Y() - nY;
mnScrollPos = Point( nX, nY );
tools::Rectangle aScrollableArea( 0, 0, maScrollArea.Width(), maScrollArea.Height() );
Scroll(nXScroll, nYScroll, aScrollableArea );
// Manually scroll all children ( except the scrollbars )
for ( int index = 0; index < GetChildCount(); ++index )
{
vcl::Window* pChild = GetChild( index );
if ( pChild && pChild != maVScrollBar.get() && pChild != maHScrollBar.get() )
{
Point aPos = pChild->GetPosPixel();
aPos += Point( nXScroll, nYScroll );
pChild->SetPosPixel( aPos );
}
}
}
IMPL_LINK( ScrollableDialog, ScrollBarHdl, ScrollBar*, pSB, void )
{
sal_uInt16 nPos = static_cast<sal_uInt16>(pSB->GetThumbPos());
if( pSB == maVScrollBar.get() )
lcl_Scroll(mnScrollPos.X(), nPos );
else if( pSB == maHScrollBar.get() )
lcl_Scroll(nPos, mnScrollPos.Y() );
}
void ScrollableDialog::SetScrollTop( long nTop )
{
Point aOld = mnScrollPos;
lcl_Scroll( mnScrollPos.X() , mnScrollPos.Y() - nTop );
maHScrollBar->SetThumbPos( 0 );
// new pos is 0,0
mnScrollPos = aOld;
}
void ScrollableDialog::SetScrollLeft( long nLeft )
{
Point aOld = mnScrollPos;
lcl_Scroll( mnScrollPos.X() - nLeft , mnScrollPos.Y() );
maVScrollBar->SetThumbPos( 0 );
// new pos is 0,0
mnScrollPos = aOld;
}
void ScrollableDialog::SetScrollWidth( long nWidth )
{
maScrollArea.setWidth( nWidth );
ResetScrollBars();
}
void ScrollableDialog::SetScrollHeight( long nHeight )
{
maScrollArea.setHeight( nHeight );
ResetScrollBars();
}
void ScrollableDialog::Resize()
{
ResetScrollBars();
}
void ScrollableDialog::ResetScrollBars()
{
Size aOutSz = GetOutputSizePixel();
Point aVPos( aOutSz.Width() - mnScrWidth, 0 );
Point aHPos( 0, aOutSz.Height() - mnScrWidth );
maVScrollBar->SetPosSizePixel( aVPos, Size( mnScrWidth, GetSizePixel().Height() - mnScrWidth ) );
maHScrollBar->SetPosSizePixel( aHPos, Size( GetSizePixel().Width() - mnScrWidth, mnScrWidth ) );
maHScrollBar->SetRangeMax( maScrollArea.Width() + mnScrWidth );
maHScrollBar->SetVisibleSize( GetSizePixel().Width() );
maVScrollBar->SetRangeMax( maScrollArea.Height() + mnScrWidth );
maVScrollBar->SetVisibleSize( GetSizePixel().Height() );
}
} // toolkit
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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