Camelot: ColourBarMsgHandler Class Reference

05444 {
05445     if (MESSAGE_IS_A(Message, ColourChangingMsg))
05446     {
05447         ColourChangingMsg *Msg = (ColourChangingMsg *) Message;
05448         switch ( Msg->State )
05449         {
05450             case ColourChangingMsg::LISTDESELECTED:
05451             case ColourChangingMsg::SELVIEWCONTEXTCHANGE:
05452                 CColourBar::PaletteHasChanged(NULL);
05453                 break;
05454 
05455             case ColourChangingMsg::LISTPAGED:
05456             case ColourChangingMsg::LISTUPDATED:
05457             case ColourChangingMsg::COLOURUPDATED:
05458                 CColourBar::PaletteHasChanged(Msg->NewColourList);
05459                 break;
05460 
05461             default:
05462                 break;
05463         }
05464     }
05465     // The new CommonAttrsChanged msg replaces these two messages. It handles 
05466     // a change in the Current Attribute group associated with a tool as well !
05467     // what a bargain !
05468     /*
05469     else if (MESSAGE_IS_A(Message, SelChangingMsg))
05470     {
05471         SelChangingMsg *Msg = (SelChangingMsg *) Message;
05472         switch ( Msg->State )
05473         {
05474             case SelChangingMsg::SelectionState::COLOURATTCHANGED:
05475             case SelChangingMsg::SelectionState::SELECTIONCHANGED:
05476             case SelChangingMsg::SelectionState::NODECHANGED:
05477                 CColourBar::SelectionHasChanged();
05478                 break;
05479         }
05480     }
05481     else if (MESSAGE_IS_A(Message, CurrentAttrChangedMsg))
05482     {
05483         CColourBar::SelectionHasChanged();
05484     }
05485     */
05486     else if (MESSAGE_IS_A(Message, CommonAttrsChangedMsg))
05487     {
05488         CColourBar::SelectionHasChanged();
05489     }
05490     else if (MESSAGE_IS_A(Message,DragMessage))
05491     {
05492         DragMessage *Msg = (DragMessage *) Message;
05493         
05494         if (Msg->State == DragMessage::DRAGSTARTED)
05495         {
05496             if (Msg->pInfo->IsKindOf(CC_RUNTIME_CLASS(ColourDragInformation)))
05497             {
05498                 ColourDragInformation *CDI = (ColourDragInformation *)Msg->pInfo;
05499 
05500                 if (CDI->IsLibraryColour() || CDI->GetParentDoc() == Document::GetSelected())
05501                 {
05502                     // Create drag targets to recieve colour drags. We don't really care if this fails,
05503                     // and the drag system will clean up any mess afterwards.
05504                     EditButtonDragTarget *ButtonTarget;
05505                     ButtonTarget = new EditButtonDragTarget(CColourBar::TheColourBar,
05506                                                          &CColourBar::TheColourBar->EditButtonRect);
05507 
05508                     // Check that the colour being dragged is in the current colour list
05509                     IndexedColour *Col = ((ColourDragInformation *) Msg->pInfo)->GetInitiallyDraggedColour();
05510                     if (Col != NULL && CColourBar::TheColourBar->m_pCurrentColourList->FindPosition(Col) < 0)
05511                         Col = NULL;
05512 
05513                     // And if it is in the list, then allow it to be rearranged in the list
05514                     if (Col != NULL)
05515                     {
05516                         ColourLineDragTarget *LineTarget;
05517                         LineTarget = new ColourLineDragTarget(CColourBar::TheColourBar,
05518                                                              &CColourBar::TheColourBar->StripRect);
05519                     }
05520                 }
05521             }
05522         }
05523     }
05524     else if (MESSAGE_IS_A(Message, DocViewMsg))
05525     {
05526         DocViewMsg *Msg = (DocViewMsg *) Message;
05527 
05528         if (Msg->State == DocViewMsg::SELCHANGED)
05529         {
05530             // Selected DocView is changing - redraw to use the new DocView's colour context
05531             BOOL DoRedraw = TRUE;
05532             if (Msg->pOldDocView != NULL && Msg->pNewDocView != NULL)
05533             {
05534                 // If we know the old & new views, then see if they have the same colour
05535                 // context attached - if they do, there's no need to redraw. This eliminates
05536                 // flicker when swapping normal views (the most common view-swap action)
05537                 // We only check the RGB context because we assume the screen is always RGB
05538                 ColourContext *OldCC = Msg->pOldDocView->GetColourContext(COLOURMODEL_RGBT, TRUE);
05539                 ColourContext *NewCC = Msg->pNewDocView->GetColourContext(COLOURMODEL_RGBT, TRUE);
05540 
05541                 if (OldCC == NewCC)
05542                     DoRedraw = FALSE;
05543             }
05544 
05545             if (DoRedraw)
05546                 CColourBar::PaletteHasChanged(NULL);
05547         }
05548     }
05549 
05550     return OK; 
05551 }

Public Member Functions
	ColourBarMsgHandler ()
	Constructs a ColourBarMsgHandler, an object which, surprisingly, handles messages for its parent CColourBar.
Protected Member Functions
MsgResult	Message (Msg *Msg)
	Process messages sent to the Colour Bar.
Friends
class	CCColorBar
ColourBarMsgHandler Class Reference

Public Member Functions

Protected Member Functions

Friends

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation
