cnitem.cpp

/***************************************************************************
 *   Copyright (C) 2003-2005 by David Saxton                               *
 *   david@bluehaze.org                                                    *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 ***************************************************************************/

#include "canvasitemparts.h"
#include "icndocument.h"
#include "cells.h"
#include "component.h"
#include "ecnode.h"
#include "fpnode.h"
#include "itemdocumentdata.h"
#include <kdebug.h>

#include <qbitarray.h>
#include <qpainter.h>

#include <cmath>


CNItem::CNItem( ICNDocument *icnDocument, bool newItem, const QString &id )
        : Item( icnDocument, newItem, id ),
          CIWidgetMgr( icnDocument->canvas(), this ),
          p_icnDocument(icnDocument),
          b_pointsAdded(false)
{
        setZ( ICNDocument::Z::Item );
        setSelected(false);
        
        m_brushCol = QColor( 0xf7, 0xf7, 0xff );
        m_selectedCol = QColor( 101, 134, 192 );
        
        setBrush(m_brushCol);
        setPen( Qt::black );
}

CNItem::~CNItem()
{
        const TextMap::iterator textMapEnd = m_textMap.end();
        for ( TextMap::iterator it = m_textMap.begin(); it != textMapEnd; ++it )
        {
                if (it.data())
                        it.data()->setCanvas(0);
                delete (Text*)it.data();
        }
        m_textMap.clear();
        
        updateConnectorPoints(false);
}

int CNItem::rtti() const
{
        return ItemDocument::RTTI::CNItem;
}

bool CNItem::preResize( QRect sizeRect )
{
        if ( (std::abs(sizeRect.width()) < minimumSize().width()) ||
                 (std::abs(sizeRect.height()) < minimumSize().height()) )
                return false;
        
        updateConnectorPoints(false);
        return true;
}

void CNItem::postResize()
{
        updateAttachedPositioning();
}

void CNItem::setVisible( bool yes )
{
        if (b_deleted) {
                Item::setVisible(false);
                return;
        }

        Item::setVisible(yes);

        const TextMap::iterator textMapEnd = m_textMap.end();
        for(TextMap::iterator it = m_textMap.begin(); it != textMapEnd; ++it) {
                it.data()->setVisible(yes);
        }

        const NodeMap::iterator nodeMapEnd = m_nodeMap.end();
        for(NodeMap::iterator it = m_nodeMap.begin(); it != nodeMapEnd; ++it) {
                it.data().node->setVisible(yes);
        }

        CNItem::setDrawWidgets(yes);

        if (!yes)
                updateConnectorPoints(false);
}

void CNItem::setInitialPos( const QPoint &pos )
{
        m_offset = pos - QPoint( (int)x(), (int)y() );
}

void CNItem::reparented( Item *oldParent, Item *newParent )
{
        Item::reparented( oldParent, newParent );
        updateNodeLevels();
}

void CNItem::updateNodeLevels()
{
        int l = level();
        
        // Tell our nodes about our level
        const NodeMap::iterator nodeMapEnd = m_nodeMap.end();
        for ( NodeMap::iterator it = m_nodeMap.begin(); it != nodeMapEnd; ++it )
        {
                it.data().node->setLevel(l);
        }
        
        const ItemList::iterator end = m_children.end();
        for ( ItemList::iterator it = m_children.begin(); it != end; ++it )
        {
                if ( CNItem *cnItem = dynamic_cast<CNItem*>((Item*)*it) )
                        cnItem->updateNodeLevels();
        }
}

ConnectorList CNItem::connectorList()
{
        ConnectorList list;

        const NodeMap::iterator nodeMapEnd = m_nodeMap.end();
        for ( NodeMap::iterator it = m_nodeMap.begin(); it != nodeMapEnd; ++it )
        {
                Node *node = p_icnDocument->nodeWithID(it.data().id);
                if (node)
                {
                        ConnectorList nodeList = node->inputConnectorList();
                        ConnectorList::iterator end = nodeList.end();
                        for ( ConnectorList::iterator it = nodeList.begin(); it != end; ++it )
                        {
                                if ( *it && !list.contains(*it) )
                                {
                                        list.append(*it);
                                }
                        }
                        nodeList = node->outputConnectorList();
                        end = nodeList.end();
                        for ( ConnectorList::iterator it = nodeList.begin(); it != end; ++it )
                        {
                                if ( *it && !list.contains(*it) )
                                {
                                        list.append(*it);
                                }
                        }
                }
        }

        return list;
}

void CNItem::removeItem()
{
        if (b_deleted)
                return;
        
        const TextMap::iterator textMapEnd = m_textMap.end();
        for ( TextMap::iterator it = m_textMap.begin(); it != textMapEnd; ++it )
                it.data()->setCanvas(0);
        
        Item::removeItem();
        updateConnectorPoints(false);
}

void CNItem::restoreFromItemData( const ItemData &itemData )
{
        Item::restoreFromItemData(itemData);
        
        updateConnectorPoints(false);
        
        {
                const BoolMap::const_iterator end = itemData.buttonMap.end();
                for ( BoolMap::const_iterator it = itemData.buttonMap.begin(); it != end; ++it )
                {
                        Button *b = button(it.key());
                        if (b)
                                b->setState(it.data());
                }
        }
        {
                const IntMap::const_iterator end = itemData.sliderMap.end();
                for ( IntMap::const_iterator it = itemData.sliderMap.begin(); it != end; ++it )
                {
                        Slider *s = slider(it.key());
                        if (s)
                                s->setValue(it.data());
                }
        }
}

ItemData CNItem::itemData() const
{
        ItemData itemData = Item::itemData();
        
        const WidgetMap::const_iterator end = m_widgetMap.end();
        for ( WidgetMap::const_iterator it = m_widgetMap.begin(); it != end; ++it )
        {
                if ( Slider *slider = dynamic_cast<Slider*>(*it) )
                        itemData.sliderMap[slider->id()] = slider->value();
                
                else if ( Button *button = dynamic_cast<Button*>(*it) )
                        itemData.buttonMap[button->id()] = button->state();
                
        }
        
        return itemData;
}

Node* CNItem::createNode( double _x, double _y, int orientation, const QString &name, uint type )
{
        orientation %= 360;
        if(orientation < 0 ) orientation += 360;

        Node::node_dir dir;

        if      (orientation ==   0 ) dir = Node::dir_right;
        else if (orientation ==  90 ) dir = Node::dir_down;
        else if (orientation == 180 ) dir = Node::dir_left;
        else if (orientation == 270 ) dir = Node::dir_up;
        else {
                kdError() << k_funcinfo << "Unknown orientation: " << orientation << endl;
                return 0;
        }
        
        Node *node;
        if ( (type == Node::ec_pin) || (type == Node::ec_junction) )
        {
                node = new ECNode( p_icnDocument, Node::node_type(type), dir, QPoint( 0, 0 ) );
        } else {
                node = new FPNode( p_icnDocument, Node::node_type(type), dir, QPoint( 0, 0 ) );
        }

        node->setLevel( level() );
        
        node->setParentItem(this);
        node->setChildId(name);
        
        NodeInfo info;
        info.id = node->id();
        info.node = node;
        info.x = _x;
        info.y = _y;
        info.orientation = orientation;
        
        m_nodeMap[name] = info;
        
        updateAttachedPositioning();
        
        return node;
}

bool CNItem::removeNode( const QString &name )
{
        NodeMap::iterator it = m_nodeMap.find(name);
        if ( it == m_nodeMap.end() ) {
                return false;
        }
        it.data().node->removeNode();
        p_icnDocument->flushDeleteList();
        m_nodeMap.erase(it);
        return true;
}

Node *CNItem::getClosestNode( const QPoint &pos )
{
        // Work through the nodes, finding the one closest to the (x, y) position
        Node *shortestNode = 0;
        double shortestDistance = 1e10; // Nice large distance :-)
        
        const NodeMap::iterator end = m_nodeMap.end();
        for ( NodeMap::iterator it = m_nodeMap.begin(); it != end; ++it )
        {
                Node *node = p_icnDocument->nodeWithID(it.data().id);
                if (node)
                {
                        // Calculate the distance
                        // Yeah, it's actually the distance squared; but it's all relative, so doesn't matter
                        double distance = std::pow(node->x()-pos.x(),2) + std::pow(node->y()-pos.y(),2);
                        
                        if ( distance < shortestDistance ) {
                                shortestDistance = distance;
                                shortestNode = node;
                        }
                }
        }
        
        return shortestNode;
}

void CNItem::updateAttachedPositioning()
{
        // Actually, we don't do anything anymore...
}

void CNItem::updateZ( int baseZ )
{
        Item::updateZ(baseZ);
        double _z = z();
        
        const NodeMap::iterator nodeMapEnd = m_nodeMap.end();
        for ( NodeMap::iterator it = m_nodeMap.begin(); it != nodeMapEnd; ++it )
                it.data().node->setZ( _z + 0.5 );
        
        const WidgetMap::iterator widgetMapEnd = m_widgetMap.end();
        for ( WidgetMap::iterator it = m_widgetMap.begin(); it != widgetMapEnd; ++it )
                it.data()->setZ( _z + 0.5 );
        
        const TextMap::iterator textMapEnd = m_textMap.end();
        for ( TextMap::iterator it = m_textMap.begin(); it != textMapEnd; ++it )
                it.data()->setZ( _z + 0.5 );
}

void CNItem::snap( int newx, int newy )
{
        // Ugly looking thing
        // Basically means: Move item to the new position of newx-offsetx and then snap it to the 8-square-side grid
        // This is in one move item call so that any attached connectors are only called once to update their routes.
        moveBy( 4+newx-m_offset.x()-x()-(int)(newx-m_offset.x())%8, 4+newy-m_offset.y()-y()-(int)(newy-m_offset.y())%8 );
}

void CNItem::moveBy( double dx, double dy )
{
        if ( dx == 0 && dy == 0 ) return;
        updateConnectorPoints(false);
        Item::moveBy( dx, dy );
        
        setWidgetsPos( QPoint( int(x()), int(y()) ) );
}

bool CNItem::mousePressEvent( const EventInfo &info )
{
        bool accepted = Item::mousePressEvent(info);
        if (!accepted) accepted = CIWidgetMgr::mousePressEvent(info);
        if (accepted) setChanged();
        return accepted;
}

bool CNItem::mouseReleaseEvent( const EventInfo &info )
{
        bool accepted = Item::mouseReleaseEvent(info);

        if (!accepted) accepted = CIWidgetMgr::mouseReleaseEvent(info);
        if (accepted) setChanged();

        return accepted;
}

bool CNItem::mouseDoubleClickEvent( const EventInfo &info )
{
        bool accepted = Item::mouseDoubleClickEvent(info);
        if (!accepted)
                accepted = CIWidgetMgr::mouseDoubleClickEvent(info);
        if (accepted)
                setChanged();
        return accepted;
}

bool CNItem::mouseMoveEvent( const EventInfo &info )
{
        bool accepted = Item::mouseMoveEvent(info);
        if (!accepted) accepted = CIWidgetMgr::mouseMoveEvent(info);
        if (accepted) setChanged();
        return accepted;
}

bool CNItem::wheelEvent( const EventInfo &info )
{
        bool accepted = Item::wheelEvent(info);
        if (!accepted) accepted = CIWidgetMgr::wheelEvent(info);
        if (accepted) setChanged();
        return accepted;
}

void CNItem::enterEvent()
{
        Item::enterEvent();
        CIWidgetMgr::enterEvent();
        setChanged();
}

void CNItem::leaveEvent()
{
        Item::leaveEvent();
        CIWidgetMgr::leaveEvent();
        setChanged();
}

void CNItem::drawShape( QPainter &p )
{
        if(!isVisible()) return;

//      initPainter(p);
        if(isSelected()) p.setPen(m_selectedCol);

        p.drawPolygon(areaPoints());
        p.drawPolyline(areaPoints());
//      deinitPainter(p);
}

void CNItem::initPainter( QPainter &p )
{
        if(isSelected()) p.setPen(m_selectedCol);
}

void CNItem::updateConnectorPoints( bool add )
{
        if(b_deleted || !isVisible()) add = false;

        if(b_pointsAdded == add) return;

        b_pointsAdded = add;

        Cells *cells = p_icnDocument->cells();
        if (!cells) return;

        const int cx = cells->width();
        const int cy = cells->height();

        if ( cx < 1 || cy < 1 ) return;

        // Get translation matrix
        // Hackish...
        QWMatrix m;
        if ( Component *c = dynamic_cast<Component*>(this) )
                m = c->transMatrix( c->angleDegrees(), c->flipped(), int(x()), int(y()), false );
        
        // Convention used here: _UM = unmapped by both matrix and cell reference, _M = mapped

        const QPoint start_UM = QPoint( int(x()+offsetX())-cellSize, int(y()+offsetY())-cellSize );
        const QPoint end_UM = start_UM + QPoint( width()+2*cellSize, height()+2*cellSize );
        
        const QPoint start_M = m.map(start_UM)/cellSize;
        const QPoint end_M = m.map(end_UM)/cellSize;

        int sx_M = start_M.x();
        int ex_M = end_M.x();

        int sy_M = start_M.y();
        int ey_M = end_M.y();

        // Normalise start and end points
        if ( sx_M > ex_M ) {
                const int temp = sx_M;
                sx_M = ex_M;
                ex_M = temp;
        }

        if ( sy_M > ey_M ) {
                const int temp = sy_M;
                sy_M = ey_M;
                ey_M = temp;
        }

        ex_M++;
        ey_M++;

        const int mult = add ? 1 : -1;

        for ( int x = sx_M; x < ex_M; x++ )
        {
                for ( int y = sy_M; y < ey_M; y++ )
                {
                        if ( p_icnDocument->isValidCellReference( x, y ) )
                        {
                                if ( x != sx_M && y != sy_M && x != (ex_M-1) && y != (ey_M-1) )
                                {
                                        (*cells)[x][y].CIpenalty += mult*ICNDocument::hs_item;
                                } else {
//                              (*cells)[x][y].CIpenalty += mult*ICNDocument::hs_item/2;
                                        (*cells)[x][y].CIpenalty += mult*ICNDocument::hs_connector*5;
                                }
                        }
                }
        }
        
#if 0
        // And subtract the positions of the node on the border
        NodeMap::iterator end = m_nodeMap.end();
        for ( NodeMap::iterator it = m_nodeMap.begin(); it != end; ++it )
        {
                const int x = (int)((it->second.node->x()-4)/cellSize);
                const int y = (int)((it->second.node->y()-4)/cellSize);
                if ( p_icnDocument->isValidCellReference(x,y) ) {
                        (*cells)[x][y].CIpenalty -= mult*ICNDocument::hs_connector*5;
                }
        }
#endif
        
        const TextMap::iterator textMapEnd = m_textMap.end();
        for ( TextMap::iterator it = m_textMap.begin(); it != textMapEnd; ++it )
        {
                it.data()->updateConnectorPoints(add);
        }

        const WidgetMap::iterator widgetMapEnd = m_widgetMap.end();
        for ( WidgetMap::iterator it = m_widgetMap.begin(); it != widgetMapEnd; ++it )
        {
                it.data()->updateConnectorPoints(add);
        }
}

Text* CNItem::addDisplayText( const QString &id, const QRect & pos, const QString &display, bool internal, int flags )
{
        Text *text = 0;
        TextMap::iterator it = m_textMap.find(id);
        if ( it != m_textMap.end() )
        {
//              kdWarning() << "CNItem::addDisplayText: removing old text"<<endl;
                delete it.data();
                m_textMap.remove(it);
        }
        
        text = new Text( "", this, pos, canvas(), flags );
        text->setZ( z()+(internal?0.1:-0.1) );
        
        m_textMap[id] = text;
        
        // Calculate the correct size
        setDisplayText( id, display );
        text->show();
        return text;
}

void CNItem::setDisplayText( const QString &id, const QString &display )
{
        TextMap::iterator it = m_textMap.find(id);
        if ( it == m_textMap.end() )
        {
                kdError() << "CNItem::setDisplayText: Could not find text with id \""<<id<<"\""<<endl;
                return;
        }
        it.data()->setText(display);
        updateAttachedPositioning();
}

void CNItem::removeDisplayText( const QString &id )
{
        TextMap::iterator it = m_textMap.find(id);
        if ( it == m_textMap.end() ) {
//              kdError() << "CNItem::removeDisplayText: Could not find text with id \""<<id<<"\""<<endl;
                return;
        }

        it.data()->updateConnectorPoints(false);
        delete it.data();
        m_textMap.remove(it);
}

QString CNItem::nodeId( const QString &internalNodeId )
{
        NodeMap::iterator it = m_nodeMap.find(internalNodeId);
        if ( it == m_nodeMap.end() ) return "";
        else return it.data().id;
}

Node *CNItem::childNode( const QString &childId )
{
        return p_icnDocument->nodeWithID( nodeId(childId) );
}

NodeInfo::NodeInfo()
{
        node = 0;
        x = 0.;
        y = 0.;
        orientation = 0;
}

#include "cnitem.moc"

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