C++ EvtGeneric类代码示例

void CtrlText::handleEvent( EvtGeneric &rEvent )
{
    // Save the event to use it in callbacks
    m_pEvt = &rEvent;

    m_fsm.handleTransition( rEvent.getAsString() );
}

void CtrlSliderBg::handleEvent( EvtGeneric &rEvent )
{
    if( rEvent.getAsString().find( "mouse:left:down" ) != string::npos )
    {
        // Compute the resize factors
        float factorX, factorY;
        getResizeFactors( factorX, factorY );

        // Get the position of the control
        const Position *pPos = getPosition();

        // Get the value corresponding to the position of the mouse
        EvtMouse &rEvtMouse = (EvtMouse&)rEvent;
        int x = rEvtMouse.getXPos();
        int y = rEvtMouse.getYPos();
        m_rVariable.set( m_rCurve.getNearestPercent(
                            (int)((x - pPos->getLeft()) / factorX),
                            (int)((y - pPos->getTop()) / factorY) ) );

        // Forward the clic to the cursor
        EvtMouse evt( getIntf(), x, y, EvtMouse::kLeft, EvtMouse::kDown );
        TopWindow *pWin = getWindow();
        if( pWin && m_pCursor )
        {
            EvtEnter evtEnter( getIntf() );
            // XXX It was not supposed to be implemented like that !!
            pWin->forwardEvent( evtEnter, *m_pCursor );
            pWin->forwardEvent( evt, *m_pCursor );
        }
    }
    else if( rEvent.getAsString().find( "scroll" ) != string::npos )
    {
        int direction = ((EvtScroll&)rEvent).getDirection();

        float percentage = m_rVariable.get();
        if( direction == EvtScroll::kUp )
        {
            percentage += SCROLL_STEP;
        }
        else
        {
            percentage -= SCROLL_STEP;
        }

        m_rVariable.set( percentage );
    }
}

void CtrlMove::handleEvent( EvtGeneric &rEvent )
{
    m_pEvt = &rEvent;
    m_fsm.handleTransition( rEvent.getAsString() );
    // Transmit the event to the decorated control
    // XXX: Is it really a good idea?
    m_rCtrl.handleEvent( rEvent );
}

void CtrlImage::handleEvent( EvtGeneric &rEvent )
{
    // No FSM for this simple transition
    if( rEvent.getAsString() == "mouse:right:up:none" )
    {
        CmdDlgShowPopupMenu cmd( getIntf() );
        cmd.execute();
    }
    else if( rEvent.getAsString() == "mouse:left:up:none" )
    {
        CmdDlgHidePopupMenu cmd( getIntf() );
        cmd.execute();
    }
    else if( rEvent.getAsString() == "mouse:left:dblclick:none" )
    {
        m_rCommand.execute();
    }
}

void CtrlCheckbox::handleEvent( EvtGeneric &rEvent )
{
    m_fsm.handleTransition( rEvent.getAsString() );
}

void CtrlTree::handleEvent( EvtGeneric &rEvent )
{
    bool bChangedPosition = false;
    VarTree::Iterator toShow; bool needShow = false;
    if( rEvent.getAsString().find( "key:down" ) != string::npos )
    {
        int key = ((EvtKey&)rEvent).getKey();
        VarTree::Iterator it;
        bool previousWasSelected = false;

        /* Delete the selection */
        if( key == KEY_DELETE )
        {
            /* Find first non selected item before m_pLastSelected */
            VarTree::Iterator it_sel = m_flat ? m_rTree.firstLeaf()
                                              : m_rTree.begin();
            for( it = (m_flat ? m_rTree.firstLeaf() : m_rTree.begin());
                 it != m_rTree.end();
                 it = (m_flat ? m_rTree.getNextLeaf( it )
                              : m_rTree.getNextVisibleItem( it )) )
            {
                if( &*it == m_pLastSelected ) break;
                if( !it->isSelected() ) it_sel = it;
            }

            /* Delete selected stuff */
            m_rTree.delSelected();

            /* Verify if there is still sthg selected (e.g read-only items) */
            m_pLastSelected = NULL;
            for( it = (m_flat ? m_rTree.firstLeaf() : m_rTree.begin());
                 it != m_rTree.end();
                 it = (m_flat ? m_rTree.getNextLeaf( it )
                              : m_rTree.getNextVisibleItem( it )) )
            {
                if( it->isSelected() )
                    m_pLastSelected = &*it;
            }

            /* if everything was deleted, use it_sel as last selection */
            if( !m_pLastSelected )
            {
                it_sel->setSelected( true );
                m_pLastSelected = &*it_sel;
            }

            // Redraw the control
            makeImage();
            notifyLayout();
        }
        else if( key == KEY_PAGEDOWN )
        {
            it = m_firstPos;
            int i = (int)(maxItems()*1.5);
            while( i >= 0 )
            {
                VarTree::Iterator it_old = it;
                it = m_flat ? m_rTree.getNextLeaf( it )
                            : m_rTree.getNextVisibleItem( it );
                /* End is already visible, dont' scroll */
                if( it == m_rTree.end() )
                {
                    it = it_old;
                    break;
                }
                needShow = true;
                i--;
            }
            if( needShow )
            {
                ensureVisible( it );
                makeImage();
                notifyLayout();
            }
        }
        else if (key == KEY_PAGEUP )
        {
            it = m_firstPos;
            int i = maxItems();
            while( i >= maxItems()/2 )
            {
                it = m_flat ? m_rTree.getPrevLeaf( it )
                            : m_rTree.getPrevVisibleItem( it );
                /* End is already visible, dont' scroll */
                if( it == ( m_flat ? m_rTree.firstLeaf() : m_rTree.begin() ) )
                {
                    break;
                }
                i--;
            }
            ensureVisible( it );
            makeImage();
            notifyLayout();
        }
        else if ( key == KEY_UP ||
                  key == KEY_DOWN ||
                  key == KEY_LEFT ||
                  key == KEY_RIGHT ||
                  key == KEY_ENTER ||
                  key == ' ' )
//.........这里部分代码省略.........

void CtrlList::handleEvent( EvtGeneric &rEvent )
{
    if( rEvent.getAsString().find( "key:down" ) != std::string::npos )
    {
        int key = ((EvtKey&)rEvent).getKey();
        VarList::Iterator it = m_rList.begin();
        bool previousWasSelected = false;
        while( it != m_rList.end() )
        {
            VarList::Iterator next = it;
            ++next;
            if( key == KEY_UP )
            {
                // Scroll up one item
                if( it != m_rList.begin() || &*it != m_pLastSelected )
                {
                    bool nextWasSelected = ( &*next == m_pLastSelected );
                    (*it).m_selected = nextWasSelected;
                    if( nextWasSelected )
                    {
                        m_pLastSelected = &*it;
                    }
                }
            }
            else if( key == KEY_DOWN )
            {
                // Scroll down one item
                if( next != m_rList.end() || &*it != m_pLastSelected )
                {
                    (*it).m_selected = previousWasSelected;
                }
                if( previousWasSelected )
                {
                    m_pLastSelected = &*it;
                    previousWasSelected = false;
                }
                else
                {
                    previousWasSelected = ( &*it == m_pLastSelected );
                }
            }
            it = next;
        }

        // Redraw the control
        makeImage();
        notifyLayout();
    }

    else if( rEvent.getAsString().find( "mouse:left" ) != std::string::npos )
    {
        EvtMouse &rEvtMouse = (EvtMouse&)rEvent;
        const Position *pos = getPosition();
        int yPos = m_lastPos + ( rEvtMouse.getYPos() - pos->getTop() ) /
            (m_rFont.getSize() + LINE_INTERVAL);
        VarList::Iterator it;
        int index = 0;

        if( rEvent.getAsString().find( "mouse:left:down:ctrl,shift" ) !=
                 std::string::npos )
        {
            // Flag to know if the current item must be selected
            bool select = false;
            for( it = m_rList.begin(); it != m_rList.end(); ++it )
            {
                bool nextSelect = select;
                if( index == yPos || &*it == m_pLastSelected )
                {
                    if( select )
                    {
                        nextSelect = false;
                    }
                    else
                    {
                        select = true;
                        nextSelect = true;
                    }
                }
                (*it).m_selected = (*it).m_selected || select;
                select = nextSelect;
                index++;
            }
        }

        else if( rEvent.getAsString().find( "mouse:left:down:ctrl" ) !=
                 std::string::npos )
        {
            for( it = m_rList.begin(); it != m_rList.end(); ++it )
            {
                if( index == yPos )
                {
                    (*it).m_selected = ! (*it).m_selected;
                    m_pLastSelected = &*it;
                    break;
                }
                index++;
            }
        }

        else if( rEvent.getAsString().find( "mouse:left:down:shift" ) !=
//.........这里部分代码省略.........

void CtrlTree::handleEvent( EvtGeneric &rEvent )
{
    bool bChangedPosition = false;
    VarTree::Iterator toShow; bool needShow = false;
    if( rEvent.getAsString().find( "key:down" ) != string::npos )
    {
        int key = ((EvtKey&)rEvent).getKey();
        VarTree::Iterator it;
        bool previousWasSelected = false;

        /* Delete the selection */
        if( key == KEY_DELETE )
        {
            /* Find first non selected item before m_pLastSelected */
            VarTree::Iterator it_sel = m_flat ? m_rTree.firstLeaf()
                                              : m_rTree.begin();
            for( it = m_flat ? m_rTree.firstLeaf() : m_rTree.begin();
                 it != m_rTree.end();
                 it = m_flat ? m_rTree.getNextLeaf( it )
                             : m_rTree.getNextVisibleItem( it ) )
            {
                if( &*it == m_pLastSelected ) break;
                if( !it->m_selected ) it_sel = it;
            }

            /* Delete selected stuff */
            m_rTree.delSelected();

            /* Select it_sel */
            it_sel->m_selected = true;
            m_pLastSelected = &*it_sel;
        }
        else if( key == KEY_PAGEDOWN )
        {
            it = m_firstPos;
            int i = (int)(maxItems()*1.5);
            while( i >= 0 )
            {
                VarTree::Iterator it_old = it;
                it = m_flat ? m_rTree.getNextLeaf( it )
                            : m_rTree.getNextVisibleItem( it );
                /* End is already visible, dont' scroll */
                if( it == m_rTree.end() )
                {
                    it = it_old;
                    break;
                }
                needShow = true;
                i--;
            }
            if( needShow )
            {
                ensureVisible( it );
                makeImage();
                notifyLayout();
                return;
            }
        }
        else if (key == KEY_PAGEUP )
        {
            it = m_firstPos;
            int i = maxItems();
            while( i >= maxItems()/2 )
            {
                it = m_flat ? m_rTree.getPrevLeaf( it )
                            : m_rTree.getPrevVisibleItem( it );
                /* End is already visible, dont' scroll */
                if( it == ( m_flat ? m_rTree.firstLeaf() : m_rTree.begin() ) )
                {
                    break;
                }
                i--;
            }
            ensureVisible( it );
            makeImage();
            notifyLayout();
            return;
        }


        for( it = m_flat ? m_rTree.firstLeaf() : m_rTree.begin();
             it != m_rTree.end();
             it = m_flat ? m_rTree.getNextLeaf( it )
                         : m_rTree.getNextVisibleItem( it ) )
        {
            VarTree::Iterator next = m_flat ? m_rTree.getNextLeaf( it )
                                            : m_rTree.getNextVisibleItem( it );
            if( key == KEY_UP )
            {
                // Scroll up one item
                if( ( it->parent()
                      && it != it->parent()->begin() )
                    || &*it != m_pLastSelected )
                {
                    bool nextWasSelected = ( &*next == m_pLastSelected );
                    it->m_selected = nextWasSelected;
                    if( nextWasSelected )
                    {
                        m_pLastSelected = &*it;
                        needShow = true; toShow = it;
//.........这里部分代码省略.........

void CtrlTree::handleEvent( EvtGeneric &rEvent )
{
    bool needShow = false;
    bool needRefresh = false;
    Iterator toShow = m_firstPos;
    if( rEvent.getAsString().find( "key:down" ) != string::npos )
    {
        int key = ((EvtKey&)rEvent).getKey();

        /* Delete the selection */
        if( key == KEY_DELETE )
        {
            /* Delete selected stuff */
            m_rTree.delSelected();
        }
        else if( key == KEY_PAGEDOWN )
        {
            int numSteps = (int)m_capacity / 2;
            VarPercent &rVarPos = m_rTree.getPositionVar();
            rVarPos.increment( -numSteps );
        }
        else if( key == KEY_PAGEUP )
        {
            int numSteps = (int)m_capacity / 2;
            VarPercent &rVarPos = m_rTree.getPositionVar();
            rVarPos.increment( numSteps );
        }
        else if( key == KEY_UP )
        {
            // Scroll up one item
            m_rTree.unselectTree();
            if( m_lastClicked != m_rTree.end() )
            {
                if( --m_lastClicked != m_rTree.end() )
                {
                    m_lastClicked->setSelected( true );
                }
            }
            if( m_lastClicked == m_rTree.end() )
            {
                m_lastClicked = m_firstPos;
                if( m_lastClicked != m_rTree.end() )
                    m_lastClicked->setSelected( true );
            }
            needRefresh = true;
            needShow = true; toShow = m_lastClicked;
        }
        else if( key == KEY_DOWN )
        {
            // Scroll down one item
            m_rTree.unselectTree();
            if( m_lastClicked != m_rTree.end() )
            {
                Iterator it_old = m_lastClicked;
                if( ++m_lastClicked != m_rTree.end() )
                {
                    m_lastClicked->setSelected( true );
                }
                else
                {
                    it_old->setSelected( true );
                    m_lastClicked = it_old;
                }
            }
            else
            {
                m_lastClicked = m_firstPos;
                if( m_lastClicked != m_rTree.end() )
                    m_lastClicked->setSelected( true );
            }
            needRefresh = true;
            needShow = true; toShow = m_lastClicked;
        }
        else if( key == KEY_RIGHT )
        {
            // Go down one level (and expand node)
            Iterator& it = m_lastClicked;
            if( it != m_rTree.end() )
            {
                if( !m_flat && !it->isExpanded() && it->size() )
                {
                    it->setExpanded( true );
                    needRefresh = true;
                }
                else
                {
                    m_rTree.unselectTree();
                    Iterator it_old = m_lastClicked;
                    if( ++m_lastClicked != m_rTree.end() )
                    {
                        m_lastClicked->setSelected( true );
                    }
                    else
                    {
                        it_old->setSelected( true );
                        m_lastClicked = it_old;
                    }
                    needRefresh = true;
                    needShow = true; toShow = m_lastClicked;
                }
//.........这里部分代码省略.........