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