src/SUIT/SUIT_ViewManager.cxx

   1 #include "SUIT_ViewManager.h"
   2
   3 #include "SUIT_Desktop.h"
   4 #include "SUIT_ViewModel.h"
   5 #include "SUIT_Study.h"
   6
   7 #include <qcursor.h>
   8 #include <qmessagebox.h>
   9
  10 #ifdef WNT
  11 #include <windows.h>
  12 #endif
  13
  14 /*!\class SUIT_ViewManager.
  15  * Class provide manipulation with view windows.
  16  */
  17
  18 /*!Constructor.*/
  19 SUIT_ViewManager::SUIT_ViewManager( SUIT_Study* theStudy,
  20                                     SUIT_Desktop* theDesktop,
  21                                     SUIT_ViewModel* theViewModel )
  22 : QObject( 0 ),
  23 myDesktop( theDesktop ),
  24 myTitle( "Default viewer" ),
  25 myStudy( NULL )
  26 {
  27   myViewModel = 0;
  28   myActiveView = 0;
  29   setViewModel(theViewModel);
  30   connect(theDesktop, SIGNAL(windowActivated(SUIT_ViewWindow*)),
  31           this,       SLOT(onWindowActivated(SUIT_ViewWindow*)));
  32
  33   myStudy = theStudy;
  34   if( myStudy )
  35     connect( myStudy, SIGNAL( destroyed() ), this, SLOT( onDeleteStudy() ) );
  36 }
  37
  38 /*!Destructor.*/
  39 SUIT_ViewManager::~SUIT_ViewManager()
  40 {
  41   if (myViewModel) {
  42     myViewModel->setViewManager(0);
  43     delete myViewModel;
  44   }
  45 }
  46
  47 /*!Sets view model \a theViewModel to view manager.*/
  48 void SUIT_ViewManager::setViewModel(SUIT_ViewModel* theViewModel)
  49 {
  50   if (myViewModel && myViewModel != theViewModel) {
  51     myViewModel->setViewManager(0);
  52     delete myViewModel;
  53   }
  54   myViewModel = theViewModel;
  55   if (myViewModel)
  56     myViewModel->setViewManager(this);
  57 }
  58
  59 /*!Sets view name for view window \a theView.*/
  60 void SUIT_ViewManager::setViewName(SUIT_ViewWindow* theView)
  61 {
  62   int aPos = myViews.find(theView);
  63   theView->setCaption(myTitle + QString(":%1").arg(aPos+1));
  64 }
  65
  66 /*! Creates View, adds it into list of views and returns just created view window*/
  67 SUIT_ViewWindow* SUIT_ViewManager::createViewWindow()
  68 {
  69   SUIT_ViewWindow* aView = myViewModel->createView(myDesktop);
  70
  71   if ( !insertView( aView ) ){
  72     delete aView;
  73     return 0;
  74   }
  75
  76   setViewName( aView );
  77   //myDesktop->addViewWindow( aView );
  78   //it is done automatically during creation of view
  79
  80   aView->setViewManager(this);
  81
  82   emit viewCreated(aView);
  83
  84   // Special treatment for the case when <aView> is the first one in this view manager
  85   // -> call onWindowActivated() directly, because somebody may always want
  86   // to use getActiveView()
  87   if ( !myActiveView )
  88     onWindowActivated( aView );
  89
  90   return aView;
  91 }
  92
  93 /*!Create view window.*/
  94 void SUIT_ViewManager::createView()
  95 {
  96   createViewWindow();
  97 }
  98
  99 /*!Insert view window to view manager.
 100  *\retval false - if something wrong, else true.
 101  */
 102 bool SUIT_ViewManager::insertView(SUIT_ViewWindow* theView)
 103 {
 104   unsigned int aSize = myViews.size();
 105   unsigned int aNbItems = myViews.count()+1;
 106   if (aNbItems > aSize) {
 107     if (!myViews.resize(aNbItems)) {
 108       QMessageBox::critical(myDesktop, tr("Critical error"), tr("There is no memory for the new view!!!"));
 109       return false;
 110     }
 111     aSize = myViews.size();
 112   }
 113
 114   connect(theView, SIGNAL(closing(SUIT_ViewWindow*)),
 115           this,    SLOT(onDeleteView(SUIT_ViewWindow*)));
 116
 117   connect(theView, SIGNAL(mousePressed(SUIT_ViewWindow*, QMouseEvent*)),
 118           this,    SLOT(onMousePressed(SUIT_ViewWindow*, QMouseEvent*)));
 119
 120   connect(theView, SIGNAL(mouseReleased(SUIT_ViewWindow*, QMouseEvent*)),
 121           this,    SIGNAL(mouseRelease(SUIT_ViewWindow*, QMouseEvent*)));
 122
 123   connect(theView, SIGNAL(mouseDoubleClicked(SUIT_ViewWindow*, QMouseEvent*)),
 124           this,    SIGNAL(mouseDoubleClick(SUIT_ViewWindow*, QMouseEvent*)));
 125
 126   connect(theView, SIGNAL(mouseMoving(SUIT_ViewWindow*, QMouseEvent*)),
 127           this,    SIGNAL(mouseMove(SUIT_ViewWindow*, QMouseEvent*)));
 128
 129   connect(theView, SIGNAL(wheeling(SUIT_ViewWindow*, QWheelEvent*)),
 130           this,    SIGNAL(wheel(SUIT_ViewWindow*, QWheelEvent*)));
 131
 132   connect(theView, SIGNAL(keyPressed(SUIT_ViewWindow*, QKeyEvent*)),
 133           this,    SIGNAL(keyPress(SUIT_ViewWindow*, QKeyEvent*)));
 134
 135   connect(theView, SIGNAL(keyReleased(SUIT_ViewWindow*, QKeyEvent*)),
 136           this,    SIGNAL(keyRelease(SUIT_ViewWindow*, QKeyEvent*)));
 137
 138   connect(theView, SIGNAL(contextMenuRequested( QContextMenuEvent * )),
 139           this,    SLOT  (onContextMenuRequested( QContextMenuEvent * )));
 140
 141   for (uint i = 0; i < aSize; i++) {
 142     if (myViews[i]==0) {
 143       myViews.insert(i, theView);
 144       return true;
 145     }
 146   }
 147   return false;
 148 }
 149
 150 /*!Emit delete view. Remove view window \a theView from view manager.
 151 */
 152 void SUIT_ViewManager::onDeleteView(SUIT_ViewWindow* theView)
 153 {
 154   emit deleteView(theView);
 155   removeView(theView);
 156 }
 157
 158 /*!Remove view window \a theView from view manager.
 159  *And close the last view, if it has \a theView.
 160 */
 161 void SUIT_ViewManager::removeView(SUIT_ViewWindow* theView)
 162 {
 163   theView->disconnect(this);
 164   myViews.remove(myViews.find(theView));
 165   if (myActiveView == theView)
 166     myActiveView = 0;
 167   int aNumItems = myViews.count();
 168   if (aNumItems == 0)
 169     emit lastViewClosed(this);
 170 }
 171
 172 /*!Emit on \a theEvent mouse pressed in \a theView.*/
 173 void SUIT_ViewManager::onMousePressed(SUIT_ViewWindow* theView, QMouseEvent* theEvent)
 174 {
 175   emit mousePress(theView, theEvent);
 176 }
 177
 178 /*!Emit activated for view \a view.
 179 */
 180 void SUIT_ViewManager::onWindowActivated(SUIT_ViewWindow* view)
 181 {
 182   if (view) {
 183     unsigned int aSize = myViews.size();
 184     for (uint i = 0; i < aSize; i++) {
 185       if (myViews[i] && myViews[i] == view) {
 186         myActiveView = view;
 187         emit activated( this );
 188         return;
 189       }
 190     }
 191   }
 192 }
 193
 194 /*!Close all views.
 195 */
 196 void SUIT_ViewManager::closeAllViews()
 197 {
 198   unsigned int aSize = myViews.size();
 199   for (uint i = 0; i < aSize; i++) {
 200     if (myViews[i])
 201       myViews[i]->close();
 202   }
 203 }
 204
 205 /*!
 206  *\retval QString - type of view model.
 207  */
 208 QString  SUIT_ViewManager::getType() const
 209 {
 210   return (!myViewModel)? "": myViewModel->getType();
 211 }
 212
 213 /*!
 214  *\retval SUIT_Study* - current study.
 215  */
 216 SUIT_Study* SUIT_ViewManager::study() const
 217 {
 218     return myStudy;
 219 }
 220
 221 /*!
 222  * Sets stydy to NULL.
 223  */
 224 void SUIT_ViewManager::onDeleteStudy()
 225 {
 226     myStudy = NULL;
 227 }
 228
 229 void SUIT_ViewManager::onContextMenuRequested( QContextMenuEvent* e )
 230 {
 231   /*! invoke method of SUIT_PopupClient, which notifies about popup*/
 232   contextMenuRequest( e );
 233 }
 234
 235 /*!Context menu popup for \a popup.*/
 236 void SUIT_ViewManager::contextMenuPopup( QPopupMenu* popup )
 237 {
 238   SUIT_ViewModel* vm = getViewModel();
 239   if ( vm )
 240     vm->contextMenuPopup( popup );
 241 }