/*************************************************************************
 *
 *  $RCSfile: taskmisc.cxx,v $
 *
 *  $Revision: 1.1.1.1 $
 *
 *  last change: $Author: hr $ $Date: 2000-09-18 16:58:57 $
 *
 *  The Contents of this file are made available subject to the terms of
 *  either of the following licenses
 *
 *         - GNU Lesser General Public License Version 2.1
 *         - Sun Industry Standards Source License Version 1.1
 *
 *  Sun Microsystems Inc., October, 2000
 *
 *  GNU Lesser General Public License Version 2.1
 *  =============================================
 *  Copyright 2000 by Sun Microsystems, Inc.
 *  901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License version 2.1, as published by the Free Software Foundation.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *  MA  02111-1307  USA
 *
 *
 *  Sun Industry Standards Source License Version 1.1
 *  =================================================
 *  The contents of this file are subject to the Sun Industry Standards
 *  Source License Version 1.1 (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.openoffice.org/license.html.
 *
 *  Software provided under this License is provided on an "AS IS" basis,
 *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
 *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
 *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
 *  See the License for the specific provisions governing your rights and
 *  obligations concerning the Software.
 *
 *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
 *
 *  Copyright: 2000 by Sun Microsystems, Inc.
 *
 *  All Rights Reserved.
 *
 *  Contributor(s): _______________________________________
 *
 *
 ************************************************************************/

#define _TASKBAR_CXX

#ifndef _TOOLS_LIST_HXX
#include <tools/list.hxx>
#endif
#ifndef _TOOLS_DEBUG_HXX
#include <tools/debug.hxx>
#endif

#ifndef _SV_HELP_HXX
#include <vcl/help.hxx>
#endif

#include <taskbar.hxx>

// =======================================================================

TaskButtonBar::TaskButtonBar( Window* pParent, WinBits nWinStyle ) :
    ToolBox( pParent, nWinStyle | WB_3DLOOK )
{
    SetAlign( WINDOWALIGN_BOTTOM );
    SetButtonType( BUTTON_SYMBOLTEXT );
}

// -----------------------------------------------------------------------

TaskButtonBar::~TaskButtonBar()
{
}

// -----------------------------------------------------------------------

void TaskButtonBar::RequestHelp( const HelpEvent& rHEvt )
{
    ToolBox::RequestHelp( rHEvt );
}

// =======================================================================

WindowArrange::WindowArrange()
{
    mpWinList = new List;
}

// -----------------------------------------------------------------------

WindowArrange::~WindowArrange()
{
    delete mpWinList;
}

// -----------------------------------------------------------------------

static USHORT ImplCeilSqareRoot( USHORT nVal )
{
    USHORT i;

    // Ueberlauf verhindern
    if ( nVal > 0xFE * 0xFE )
        return 0xFE;

    for ( i=0; i*i < nVal; i++ )
        {}

    return i;
}

// -----------------------------------------------------------------------

static void ImplPosSizeWindow( Window* pWindow,
                               long nX, long nY, long nWidth, long nHeight )
{
    if ( nWidth < 32 )
        nWidth = 32;
    if ( nHeight < 24 )
        nHeight = 24;
    pWindow->SetPosSizePixel( nX, nY, nWidth, nHeight );
}

// -----------------------------------------------------------------------

void WindowArrange::ImplTile( const Rectangle& rRect )
{
    USHORT nCount = (USHORT)mpWinList->Count();
    if ( nCount < 3 )
    {
        ImplVert( rRect );
        return;
    }

    USHORT      i;
    USHORT      j;
    USHORT      nCols;
    USHORT      nRows;
    USHORT      nActRows;
    USHORT      nOffset;
    long        nOverWidth;
    long        nOverHeight;
    Window*     pWindow;
    long        nX = rRect.Left();
    long        nY = rRect.Top();
    long        nWidth = rRect.GetWidth();
    long        nHeight = rRect.GetHeight();
    long        nRectY = nY;
    long        nRectWidth = nWidth;
    long        nRectHeight = nHeight;
    long        nTempWidth;
    long        nTempHeight;

    nCols   = ImplCeilSqareRoot( nCount );
    nOffset = (nCols*nCols) - nCount;
    if ( nOffset >= nCols )
    {
        nRows    = nCols -1;
        nOffset -= nCols;
    }
    else
        nRows = nCols;

    nWidth /= nCols;
    if ( nWidth < 1 )
        nWidth = 1;
    nOverWidth = nRectWidth-(nWidth*nCols);

    pWindow = (Window*)mpWinList->First();
    for ( i = 0; i < nCols; i++ )
    {
        if ( i < nOffset )
            nActRows = nRows - 1;
        else
            nActRows = nRows;

        nTempWidth = nWidth;
        if ( nOverWidth > 0 )
        {
            nTempWidth++;
            nOverWidth--;
        }

        nHeight = nRectHeight / nActRows;
        if ( nHeight < 1 )
            nHeight = 1;
        nOverHeight = nRectHeight-(nHeight*nActRows);
        for ( j = 0; j < nActRows; j++ )
        {
            // Ueberhang verteilen
            nTempHeight = nHeight;
            if ( nOverHeight > 0 )
            {
                nTempHeight++;
                nOverHeight--;
            }
            ImplPosSizeWindow( pWindow, nX, nY, nTempWidth, nTempHeight );
            nY += nTempHeight;

            pWindow = (Window*)mpWinList->Next();
            if ( !pWindow )
                break;
        }

        nX += nWidth;
        nY = nRectY;

        if ( !pWindow )
            break;
    }
}

// -----------------------------------------------------------------------

void WindowArrange::ImplHorz( const Rectangle& rRect )
{
    long        nCount = (long)mpWinList->Count();
    long        nX = rRect.Left();
    long        nY = rRect.Top();
    long        nWidth = rRect.GetWidth();
    long        nHeight = rRect.GetHeight();
    long        nRectHeight = nHeight;
    long        nOver;
    long        nTempHeight;
    Window*     pWindow;

    nHeight /= nCount;
    if ( nHeight < 1 )
        nHeight = 1;
    nOver = nRectHeight - (nCount*nHeight);
    pWindow = (Window*)mpWinList->First();
    while ( pWindow )
    {
        nTempHeight = nHeight;
        if ( nOver > 0 )
        {
            nTempHeight++;
            nOver--;
        }
        ImplPosSizeWindow( pWindow, nX, nY, nWidth, nTempHeight );
        nY += nTempHeight;

        pWindow = (Window*)mpWinList->Next();
    }
}

// -----------------------------------------------------------------------

void WindowArrange::ImplVert( const Rectangle& rRect )
{
    long        nCount = (long)mpWinList->Count();
    long        nX = rRect.Left();
    long        nY = rRect.Top();
    long        nWidth = rRect.GetWidth();
    long        nHeight = rRect.GetHeight();
    long        nRectWidth = nWidth;
    long        nOver;
    long        nTempWidth;
    Window*     pWindow;

    nWidth /= nCount;
    if ( nWidth < 1 )
        nWidth = 1;
    nOver = nRectWidth - (nCount*nWidth);
    pWindow = (Window*)mpWinList->First();
    while ( pWindow )
    {
        nTempWidth = nWidth;
        if ( nOver > 0 )
        {
            nTempWidth++;
            nOver--;
        }
        ImplPosSizeWindow( pWindow, nX, nY, nTempWidth, nHeight );
        nX += nTempWidth;

        pWindow = (Window*)mpWinList->Next();
    }
}

// -----------------------------------------------------------------------

void WindowArrange::ImplCascade( const Rectangle& rRect )
{
    long        nX = rRect.Left();
    long        nY = rRect.Top();
    long        nWidth = rRect.GetWidth();
    long        nHeight = rRect.GetHeight();
    long        nRectWidth = nWidth;
    long        nRectHeight = nHeight;
    long        nOff;
    long        nCascadeWins;
    long        nLeftBorder;
    long        nTopBorder;
    long        nRightBorder;
    long        nBottomBorder;
    long        nStartOverWidth;
    long        nStartOverHeight;
    long        nOverWidth;
    long        nOverHeight;
    long        nTempX;
    long        nTempY;
    long        nTempWidth;
    long        nTempHeight;
    long        i;
    Window*     pWindow;
    Window*     pTempWindow;

    // Border-Fenster suchen um den Versatz zu ermitteln
    pTempWindow = (Window*)mpWinList->First();
    pTempWindow->GetBorder( nLeftBorder, nTopBorder, nRightBorder, nBottomBorder );
    while ( !nTopBorder )
    {
        Window* pBrdWin = pTempWindow->GetWindow( WINDOW_REALPARENT );
        if ( !pBrdWin || (pBrdWin->GetWindow( WINDOW_CLIENT ) != pTempWindow) )
            break;
        pTempWindow = pBrdWin;
        pTempWindow->GetBorder( nLeftBorder, nTopBorder, nRightBorder, nBottomBorder );
    }
    if ( !nTopBorder )
        nTopBorder = 22;
    nOff = nTopBorder;

    nCascadeWins = nRectHeight / 3 / nOff;
    if ( !nCascadeWins )
        nCascadeWins = 1;
    nWidth   -= nCascadeWins*nOff;
    nHeight  -= nCascadeWins*nOff;
    if ( nWidth < 1 )
        nWidth = 1;
    if ( nHeight < 1 )
        nHeight = 1;

    nStartOverWidth = nRectWidth-(nWidth+(nCascadeWins*nOff));
    nStartOverHeight = nRectHeight-(nHeight+(nCascadeWins*nOff));

    i = 0;
    pWindow = (Window*)mpWinList->First();
    while ( pWindow )
    {
        if ( !i )
        {
            nOverWidth = nStartOverWidth;
            nOverHeight = nStartOverHeight;
        }

        // Position
        nTempX = nX + (i*nOff);
        nTempY = nY + (i*nOff);

        // Ueberhang verteilen
        nTempWidth = nWidth;
        if ( nOverWidth > 0 )
        {
            nTempWidth++;
            nOverWidth--;
        }
        nTempHeight = nHeight;
        if ( nOverHeight > 0 )
        {
            nTempHeight++;
            nOverHeight--;
        }

        ImplPosSizeWindow( pWindow, nTempX, nTempY, nTempWidth, nTempHeight );

        if ( i < nCascadeWins )
            i++;
        else
            i = 0;

        pWindow = (Window*)mpWinList->Next();
    }
}

// -----------------------------------------------------------------------

void WindowArrange::Arrange( USHORT nType, const Rectangle& rRect )
{
    if ( !mpWinList->Count() )
        return;

    switch ( nType )
    {
        case WINDOWARRANGE_TILE:
            ImplTile( rRect );
            break;
        case WINDOWARRANGE_HORZ:
            ImplHorz( rRect );
            break;
        case WINDOWARRANGE_VERT:
            ImplVert( rRect );
            break;
        case WINDOWARRANGE_CASCADE:
            ImplCascade( rRect );
            break;
    }
}