window_manager.cpp

uclinux 下的vlc播放器源代码

    {
        for( it = m_resizeMovingS.begin(); it != m_resizeMovingS.end(); it++ )
        {
            (*it)->move( (*it)->getLeft(),
                         (*it)->getTop( )+ yNewOffset );
        }
    }
    if( m_direction == kResizeE ||
        m_direction == kResizeS ||
        m_direction == kResizeSE )
    {
        for( it = m_resizeMovingSE.begin(); it != m_resizeMovingSE.end(); it++ )
        {
            (*it)->move( (*it)->getLeft() + xNewOffset,
                         (*it)->getTop() + yNewOffset );
        }
    }
}


void WindowManager::synchVisibility() const
{
    WinSet_t::const_iterator it;
    for( it = m_allWindows.begin(); it != m_allWindows.end(); it++ )
    {
        // Show the window if it has to be visible
        if( (*it)->getVisibleVar().get() )
        {
            (*it)->innerShow();
        }
    }
}


void WindowManager::saveVisibility()
{
    WinSet_t::const_iterator it;
    m_savedWindows.clear();
    for( it = m_allWindows.begin(); it != m_allWindows.end(); it++ )
    {
        // Remember the window if it is visible
        if( (*it)->getVisibleVar().get() )
        {
            m_savedWindows.insert( *it );
        }
    }
}


void WindowManager::restoreVisibility() const
{
    // Warning in case we never called saveVisibility()
    if( m_savedWindows.size() == 0 )
    {
        msg_Warn( getIntf(), "restoring visibility for no window" );
    }

    WinSet_t::const_iterator it;
    for( it = m_savedWindows.begin(); it != m_savedWindows.end(); it++)
    {
        (*it)->show();
    }
}


void WindowManager::raiseAll() const
{
    // Raise all the windows
    WinSet_t::const_iterator it;
    for( it = m_allWindows.begin(); it != m_allWindows.end(); it++ )
    {
        (*it)->raise();
    }
}


void WindowManager::showAll( bool firstTime ) const
{
    // Show all the windows
    WinSet_t::const_iterator it;
    for( it = m_allWindows.begin(); it != m_allWindows.end(); it++ )
    {
        // When the theme is opened for the first time,
        // only show the window if set as visible in the XML
        if( (*it)->isVisible() || !firstTime )
        {
            (*it)->show();
        }
        (*it)->setOpacity( m_alpha );
    }
}


void WindowManager::hideAll() const
{
    WinSet_t::const_iterator it;
    for( it = m_allWindows.begin(); it != m_allWindows.end(); it++ )
    {
        (*it)->hide();
    }
}


void WindowManager::toggleOnTop()
{
    // Update the boolean variable
    VarBoolImpl *pVarOnTop = (VarBoolImpl*)m_cVarOnTop.get();
    pVarOnTop->set( !pVarOnTop->get() );

    // Toggle the "on top" status
    WinSet_t::const_iterator it;
    for( it = m_allWindows.begin(); it != m_allWindows.end(); it++ )
    {
        (*it)->toggleOnTop( pVarOnTop->get() );
    }
}


void WindowManager::buildDependSet( WinSet_t &rWinSet,
                                    TopWindow *pWindow )
{
    // pWindow is in the set
    rWinSet.insert( pWindow );

    // Iterate through the anchored windows
    const WinSet_t &anchored = m_dependencies[pWindow];
    WinSet_t::const_iterator iter;
    for( iter = anchored.begin(); iter != anchored.end(); iter++ )
    {
        // Check that the window isn't already in the set before adding it
        if( rWinSet.find( *iter ) == rWinSet.end() )
        {
            buildDependSet( rWinSet, *iter );
        }
    }
}


void WindowManager::checkAnchors( TopWindow *pWindow,
                                  int &xOffset, int &yOffset ) const
{
    WinSet_t::const_iterator itMov, itSta;
    AncList_t::const_iterator itAncMov, itAncSta;

    // Check magnetism with screen edges first (actually it is the work area)
    Rect workArea = OSFactory::instance( getIntf() )->getWorkArea();
    // Iterate through the moving windows
    for( itMov = m_movingWindows.begin();
         itMov != m_movingWindows.end(); itMov++ )
    {
        // Skip the invisible windows
        if( ! (*itMov)->getVisibleVar().get() )
        {
            continue;
        }

        int newLeft = (*itMov)->getLeft() + xOffset;
        int newTop = (*itMov)->getTop() + yOffset;
        if( newLeft > workArea.getLeft() - m_magnet &&
            newLeft < workArea.getLeft() + m_magnet )
        {
            xOffset = workArea.getLeft() - (*itMov)->getLeft();
        }
        if( newTop > workArea.getTop() - m_magnet &&
            newTop < workArea.getTop() + m_magnet )
        {
            yOffset = workArea.getTop() - (*itMov)->getTop();
        }
        if( newLeft + (*itMov)->getWidth() > workArea.getRight() - m_magnet &&
            newLeft + (*itMov)->getWidth() < workArea.getRight() + m_magnet )
        {
            xOffset = workArea.getRight() - (*itMov)->getLeft()
                      - (*itMov)->getWidth();
        }
        if( newTop + (*itMov)->getHeight() > workArea.getBottom() - m_magnet &&
            newTop + (*itMov)->getHeight() <  workArea.getBottom() + m_magnet )
        {
            yOffset =  workArea.getBottom() - (*itMov)->getTop()
                       - (*itMov)->getHeight();
        }
    }

    // Iterate through the moving windows
    for( itMov = m_movingWindows.begin();
         itMov != m_movingWindows.end(); itMov++ )
    {
        // Skip the invisible windows
        if( ! (*itMov)->getVisibleVar().get() )
        {
            continue;
        }

        // Get the anchors in the main layout of this moving window
        const AncList_t &movAnchors =
            (*itMov)->getActiveLayout().getAnchorList();

        // Iterate through the static windows
        for( itSta = m_allWindows.begin();
             itSta != m_allWindows.end(); itSta++ )
        {
            // Skip the moving windows and the invisible ones
            if( m_movingWindows.find( (*itSta) ) != m_movingWindows.end() ||
                ! (*itSta)->getVisibleVar().get() )
            {
                continue;
            }

            // Get the anchors in the main layout of this static window
            const AncList_t &staAnchors =
                (*itSta)->getActiveLayout().getAnchorList();

            // Check if there is an anchoring between one of the movAnchors
            // and one of the staAnchors
            for( itAncMov = movAnchors.begin();
                 itAncMov != movAnchors.end(); itAncMov++ )
            {
                for( itAncSta = staAnchors.begin();
                     itAncSta != staAnchors.end(); itAncSta++ )
                {
                    if( (*itAncSta)->canHang( **itAncMov, xOffset, yOffset ) )
                    {
                        // We have found an anchoring!
                        // There is nothing to do here, since xOffset and
                        // yOffset are automatically modified by canHang()

                        // Don't check the other anchors, one is enough...
                        return;
                    }
                    else
                    {
                        // Temporary variables
                        int xOffsetTemp = -xOffset;
                        int yOffsetTemp = -yOffset;
                        if( (*itAncMov)->canHang( **itAncSta, xOffsetTemp,
                                                  yOffsetTemp ) )
                        {
                            // We have found an anchoring!
                            // xOffsetTemp and yOffsetTemp have been updated,
                            // we just need to change xOffset and yOffset
                            xOffset = -xOffsetTemp;
                            yOffset = -yOffsetTemp;

                            // Don't check the other anchors, one is enough...
                            return;
                        }
                    }
                }
            }
        }
    }
}


void WindowManager::createTooltip( const GenericFont &rTipFont )
{
    // Create the tooltip window
    if( !m_pTooltip )
    {
        m_pTooltip = new Tooltip( getIntf(), rTipFont, 500 );
    }
    else
    {
        msg_Warn( getIntf(), "tooltip already created!" );
    }
}


void WindowManager::showTooltip()
{
    if( m_pTooltip )
    {
        m_pTooltip->show();
    }
}


void WindowManager::hideTooltip()
{
    if( m_pTooltip )
    {
        m_pTooltip->hide();
    }
}


void WindowManager::addLayout( TopWindow &rWindow, GenericLayout &rLayout )
{
    rWindow.setActiveLayout( &rLayout );
}


void WindowManager::setActiveLayout( TopWindow &rWindow,
                                     GenericLayout &rLayout )
{
    rWindow.setActiveLayout( &rLayout );
    // Rebuild the dependencies
    stopMove();
}