samples/xrc/custclas.cpp

   1 //-----------------------------------------------------------------------------
   2 // Name:        custclass.cpp
   3 // Purpose:     XML resources sample: A custom class to insert into a XRC file
   4 // Author:      Robert O'Connor (rob@medicalmnemonics.com), Vaclav Slavik
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) Robert O'Connor and Vaclav Slavik
   7 // Licence:     wxWindows licence
   8 //-----------------------------------------------------------------------------
   9
  10 //-----------------------------------------------------------------------------
  11 // Standard wxWidgets headers
  12 //-----------------------------------------------------------------------------
  13
  14 // For compilers that support precompilation, includes "wx/wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #ifdef __BORLANDC__
  18     #pragma hdrstop
  19 #endif
  20
  21 // For all others, include the necessary headers (this file is usually all you
  22 // need because it includes almost all "standard" wxWidgets headers)
  23 #ifndef WX_PRECOMP
  24     #include "wx/wx.h"
  25 #endif
  26
  27 //-----------------------------------------------------------------------------
  28 // Header of this .cpp file
  29 //-----------------------------------------------------------------------------
  30
  31 #include "custclas.h"
  32
  33 //-----------------------------------------------------------------------------
  34 // Internal constants
  35 //-----------------------------------------------------------------------------
  36
  37 // Popup menu (PU) item control IDs. In this example, they aren't hooked up
  38 // to any functions. Normally you would use these IDs in your event table, so
  39 // that if one of these menu items is clicked, then a certain function is
  40 // called.
  41 enum {
  42     PU_ADD_RECORD        = wxID_HIGHEST + 1,
  43     PU_EDIT_RECORD,
  44     PU_DELETE_RECORD
  45 };
  46
  47 // Columns of the listctrl (the leftmost one starts at 0, and so on).
  48 // Allows easier code maintenance if want to add/rearrangement of listctrl's
  49 // columns.
  50 enum {
  51     RECORD_COLUMN    = 0,
  52     ACTION_COLUMN,
  53     PRIORITY_COLUMN
  54 };
  55
  56 //-----------------------------------------------------------------------------
  57 // wxWidgets macro: implement dynamic class
  58 //-----------------------------------------------------------------------------
  59
  60 IMPLEMENT_DYNAMIC_CLASS( MyResizableListCtrl, wxListCtrl )
  61
  62 //-----------------------------------------------------------------------------
  63 // Event table: connect the events to the handler functions to process them
  64 //-----------------------------------------------------------------------------
  65
  66 BEGIN_EVENT_TABLE( MyResizableListCtrl, wxListCtrl )
  67     // Something to do when right mouse down
  68     EVT_RIGHT_DOWN( MyResizableListCtrl::ContextSensitiveMenu )
  69     // Something to do when resized
  70     EVT_SIZE( MyResizableListCtrl::OnSize )
  71 END_EVENT_TABLE()
  72
  73 //-----------------------------------------------------------------------------
  74 // Public methods
  75 //-----------------------------------------------------------------------------
  76
  77 // Constructor, including setting the dialog's m_configuration_section member
  78 // to the incoming configuration_section string.
  79 MyResizableListCtrl::MyResizableListCtrl( wxWindow *parent, wxWindowID id,
  80                                         const wxPoint& pos, const wxSize& size,
  81                                         long style, const wxValidator& validator,
  82                                         const wxString& name )
  83    : wxListCtrl( parent, id, pos, size, style, validator, name )
  84 {
  85
  86     // This listctrl needs to insert its columns in the constructor, since
  87     // as soon as the listctrl is built, it is resized and grafted onto an
  88     // "unknown" XRC placeholder. This induces an OnSize() event, calling the
  89     // overrriden OnSize function for this class, which needs to have 3
  90     // columns to resize (else an assert on WXGTK debug build).
  91     InsertColumn( RECORD_COLUMN, _("Record"), wxLIST_FORMAT_LEFT, 140);
  92     InsertColumn( ACTION_COLUMN, _("Action"), wxLIST_FORMAT_LEFT, 70);
  93     InsertColumn( PRIORITY_COLUMN, _("Priority"), wxLIST_FORMAT_LEFT, 70 );
  94 }
  95
  96
  97 void MyResizableListCtrl::ContextSensitiveMenu( wxMouseEvent& event )
  98 {
  99     // Make an instance of a menu.
 100     wxMenu      a_menu;
 101
 102     a_menu.Append( PU_ADD_RECORD, _( "Add a new record...") );
 103     a_menu.Append( PU_EDIT_RECORD, _( "Edit selected record..." ) );
 104     a_menu.Append( PU_DELETE_RECORD, _( "Delete selected record" ) );
 105
 106     // If no listctrl rows selected, then disable the menu items that
 107     // require selection
 108     if ( GetSelectedItemCount() == 0 ) {
 109         a_menu.Enable( PU_EDIT_RECORD, false );
 110         a_menu.Enable( PU_DELETE_RECORD, false );
 111     }
 112
 113     // Show the popup menu (wxWindow::PopupMenu ), at the x,y position
 114     // of the click event
 115     PopupMenu( &a_menu, event.GetPosition() );
 116 }
 117
 118
 119 void MyResizableListCtrl::OnSize( wxSizeEvent &event )
 120 {
 121     // Call our custom width setting function.
 122     SetColumnWidths();
 123     // REQURED event.Skip() call to allow this event to propagate
 124     // upwards so others can do what they need to do in response to
 125     // this size event.
 126     event.Skip();
 127 }
 128
 129
 130 void MyResizableListCtrl::SetColumnWidths()
 131 {
 132     // Get width of entire listctrl
 133     int leftmostColumnWidth = GetSize().x;
 134
 135     // Subtract width of other columns, scrollbar, and some padding
 136     leftmostColumnWidth -= GetColumnWidth( ACTION_COLUMN );
 137     leftmostColumnWidth -= GetColumnWidth( PRIORITY_COLUMN );
 138     leftmostColumnWidth -= wxSystemSettings::GetMetric( wxSYS_VSCROLL_X );
 139     leftmostColumnWidth -= 5;
 140
 141     // Set the column width to the new value.
 142     SetColumnWidth( RECORD_COLUMN, leftmostColumnWidth );
 143
 144     // This is just a debug message in case you want to watch the
 145     // events scroll by as you resize.
 146     wxLogDebug( wxT("Successfully set column widths") );
 147 }
 148
 149