tdemdichildfrmcaption.cpp

//----------------------------------------------------------------------------
//    filename             : tdemdichildfrmcaption.cpp
//----------------------------------------------------------------------------
//    Project              : KDE MDI extension
//
//    begin                : 07/1999       by Szymon Stefanek as part of kvirc
//                                         (an IRC application)
//    changes              : 09/1999       by Falk Brettschneider to create an
//                           - 06/2000     stand-alone Qt extension set of
//                                         classes and a Qt-based library
//                           2000-2003     maintained by the KDevelop project
//
//    copyright            : (C) 1999-2003 by Szymon Stefanek (stefanek@tin.it)
//                                         and
//                                         Falk Brettschneider
//    email                :  falkbr@kdevelop.org (Falk Brettschneider)
//----------------------------------------------------------------------------
//
//----------------------------------------------------------------------------
//
//    This program is free software; you can redistribute it and/or modify
//    it under the terms of the GNU Library General Public License as
//    published by the Free Software Foundation; either version 2 of the
//    License, or (at your option) any later version.
//
//----------------------------------------------------------------------------
 
#include "tdemdichildfrmcaption.h"
#include "tdemdichildfrmcaption.moc"
 
#include <tqpainter.h>
#include <tqapplication.h>
#include <tqcursor.h>
#include <tqtoolbutton.h>
#include <tqpopupmenu.h>
 
#include "tdemdidefines.h"
#include "tdemdichildfrm.h"
#include "tdemdichildarea.h"
#include "tdemdimainfrm.h"
#include <tdelocale.h>
#include <iostream>
 
#ifdef TQ_WS_WIN 
//TODO: one day gradient can be added for win98/winnt5+
// ask system properties on windows
#ifndef SPI_GETGRADIENTCAPTIONS
# define SPI_GETGRADIENTCAPTIONS 0x1008
#endif
#ifndef COLOR_GRADIENTACTIVECAPTION
# define COLOR_GRADIENTACTIVECAPTION 27
#endif
#ifndef COLOR_GRADIENTINACTIVECAPTION
# define COLOR_GRADIENTINACTIVECAPTION 28
#endif
#endif 
//#endif
 
// Class   : KMdiChildFrmCaption
// Purpose : An MDI label that draws the title
//
//
 
//============== KMdiChildFrmCaption =============//
 
KMdiChildFrmCaption::KMdiChildFrmCaption( KMdiChildFrm *parent )
        : TQWidget( parent, "tdemdi_childfrmcaption" )
{
    m_szCaption = i18n( "Unnamed" );
    m_bActive = false;
    m_pParent = parent;
    setBackgroundMode( NoBackground );
    setFocusPolicy( TQWidget::NoFocus );
    m_bChildInDrag = false;
}
 
//============== ~KMdiChildFrmCaption =============//
 
KMdiChildFrmCaption::~KMdiChildFrmCaption()
{}
 
//============= mousePressEvent ==============//
 
void KMdiChildFrmCaption::mousePressEvent( TQMouseEvent *e )
{
    if ( e->button() == TQt::LeftButton )
    {
        setMouseTracking( false );
        if ( KMdiMainFrm::frameDecorOfAttachedViews() != KMdi::Win95Look )
        {
            TQApplication::setOverrideCursor( TQt::sizeAllCursor, true );
        }
        m_pParent->m_bDragging = true;
        m_offset = mapToParent( e->pos() );
    }
    else if ( e->button() == TQt::RightButton )
    {
        m_pParent->systemMenu()->popup( mapToGlobal( e->pos() ) );
    }
}
 
//============= mouseReleaseEvent ============//
 
void KMdiChildFrmCaption::mouseReleaseEvent( TQMouseEvent *e )
{
    if ( e->button() == TQt::LeftButton )
    {
        if ( KMdiMainFrm::frameDecorOfAttachedViews() != KMdi::Win95Look )
            TQApplication::restoreOverrideCursor();
        
        releaseMouse();
        if ( m_pParent->m_bDragging )
        {
            m_pParent->m_bDragging = false;
            if ( m_bChildInDrag )
            {
                //notify child view
                KMdiChildFrmDragEndEvent ue( e );
                if ( m_pParent->m_pClient != 0L )
                    TQApplication::sendEvent( m_pParent->m_pClient, &ue );
                
                m_bChildInDrag = false;
            }
        }
    }
}
 
//============== mouseMoveEvent =============//
void KMdiChildFrmCaption::mouseMoveEvent( TQMouseEvent *e )
{
    if ( !m_pParent->m_bDragging )
        return ;
 
    if ( !m_bChildInDrag )
    {
        //notify child view
        KMdiChildFrmDragBeginEvent ue( e );
        if ( m_pParent->m_pClient != 0L )
            TQApplication::sendEvent( m_pParent->m_pClient, &ue );
        
        m_bChildInDrag = true;
    }
 
    TQPoint relMousePosInChildArea = m_pParent->m_pManager->mapFromGlobal( e->globalPos() );
 
    // mouse out of child area? stop child frame dragging
    if ( !m_pParent->m_pManager->rect().contains( relMousePosInChildArea ) )
    {
        if ( relMousePosInChildArea.x() < 0 )
            relMousePosInChildArea.rx() = 0;
        
        if ( relMousePosInChildArea.y() < 0 )
            relMousePosInChildArea.ry() = 0;
        
        if ( relMousePosInChildArea.x() > m_pParent->m_pManager->width() )
            relMousePosInChildArea.rx() = m_pParent->m_pManager->width();
        
        if ( relMousePosInChildArea.y() > m_pParent->m_pManager->height() )
            relMousePosInChildArea.ry() = m_pParent->m_pManager->height();
    }
    TQPoint mousePosInChildArea = relMousePosInChildArea - m_offset;
 
    // set new child frame position
    parentWidget() ->move( mousePosInChildArea );
}
 
//=============== setActive ===============//
 
void KMdiChildFrmCaption::setActive( bool bActive )
{
    if ( m_bActive == bActive )
        return ;
 
    //    Ensure the icon's pixmap has the correct bg color
    m_pParent->m_pWinIcon->setBackgroundColor( bActive ?
                                               m_pParent->m_pManager->m_captionActiveBackColor :
                                               m_pParent->m_pManager->m_captionInactiveBackColor );
    m_pParent->m_pUnixIcon->setBackgroundColor( bActive ?
                                                m_pParent->m_pManager->m_captionActiveBackColor :
                                                m_pParent->m_pManager->m_captionInactiveBackColor );
 
    m_bActive = bActive;
    repaint( false );
}
 
//=============== setCaption ===============//
 
void KMdiChildFrmCaption::setCaption( const TQString& text )
{
    m_szCaption = text;
    repaint( false );
}
 
//============== heightHint ===============//
 
int KMdiChildFrmCaption::heightHint()
{
    int hint = m_pParent->m_pManager->m_captionFontLineSpacing + 3;
    if ( KMdiMainFrm::frameDecorOfAttachedViews() == KMdi::Win95Look )
    {
        if ( hint < 18 )
            hint = 18;
    }
    else if ( KMdiMainFrm::frameDecorOfAttachedViews() == KMdi::KDE1Look )
    {
        if ( hint < 20 )
            hint = 20;
    }
    else if ( KMdiMainFrm::frameDecorOfAttachedViews() == KMdi::KDELook )
    {
        if ( hint < 16 )
            hint = 16;
    }
    else
    {   // kde2laptop look
        hint -= 4;
        if ( hint < 14 )
            hint = 14;
    }
    return hint;
}
 
//=============== paintEvent ==============//
 
void KMdiChildFrmCaption::paintEvent( TQPaintEvent * )
{
    TQPainter p( this );
    TQRect r = rect();
    p.setFont( m_pParent->m_pManager->m_captionFont );
    
    if ( m_bActive )
    {
        p.fillRect( r, m_pParent->m_pManager->m_captionActiveBackColor );
        p.setPen( m_pParent->m_pManager->m_captionActiveForeColor );
    }
    else
    {
        p.fillRect( r, m_pParent->m_pManager->m_captionInactiveBackColor );
        p.setPen( m_pParent->m_pManager->m_captionInactiveForeColor );
    }
    
    //Shift the text after the icon
    if ( KMdiMainFrm::frameDecorOfAttachedViews() == KMdi::Win95Look )
        r.setLeft( r.left() + m_pParent->icon() ->width() + 3 );
    else if ( KMdiMainFrm::frameDecorOfAttachedViews() == KMdi::KDE1Look )
        r.setLeft( r.left() + 22 );
    else if ( KMdiMainFrm::frameDecorOfAttachedViews() == KMdi::KDELook )
        r.setLeft( r.left() + m_pParent->icon() ->width() + 3 );
    else  // kde2laptop look
        r.setLeft( r.left() + 30 );
 
    int captionWidthForText = width() - 4 * m_pParent->m_pClose->width() - m_pParent->icon() ->width() - 5;
    TQString text = abbreviateText( m_szCaption, captionWidthForText );
    p.drawText( r, AlignVCenter | AlignLeft | SingleLine, text );
 
}
 
 
TQString KMdiChildFrmCaption::abbreviateText( TQString origStr, int maxWidth )
{
    TQFontMetrics fm = fontMetrics();
    int actualWidth = fm.width( origStr );
 
    int realLetterCount = origStr.length();
    int newLetterCount;
    
    if ( actualWidth != 0 )
        newLetterCount = ( maxWidth * realLetterCount ) / actualWidth;
    else
        newLetterCount = realLetterCount; // should be 0 anyway
 
    int w = maxWidth + 1;
    TQString s = origStr;
    
    if ( newLetterCount <= 0 )
        s = "";
    
    while ( ( w > maxWidth ) && ( newLetterCount >= 1 ) )
    {
        if ( newLetterCount < realLetterCount )
        {
            if ( newLetterCount > 3 )
                s = origStr.left( newLetterCount / 2 ) + "..." + origStr.right( newLetterCount / 2 );
            else
            {
                if ( newLetterCount > 1 )
                    s = origStr.left( newLetterCount ) + "..";
                else
                    s = origStr.left( 1 );
            }
        }
        TQFontMetrics fm = fontMetrics();
        w = fm.width( s );
        newLetterCount--;
    }
    return s;
}
 
//============= mouseDoubleClickEvent ===========//
 
void KMdiChildFrmCaption::mouseDoubleClickEvent( TQMouseEvent * )
{
    m_pParent->maximizePressed();
}
 
//============= slot_moveViaSystemMenu ===========//
 
void KMdiChildFrmCaption::slot_moveViaSystemMenu()
{
    setMouseTracking( true );
    grabMouse();
    
    if ( KMdiMainFrm::frameDecorOfAttachedViews() != KMdi::Win95Look )
        TQApplication::setOverrideCursor( TQt::sizeAllCursor, true );
    
    m_pParent->m_bDragging = true;
    m_offset = mapFromGlobal( TQCursor::pos() );
}