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 // GCC implementation
  12 //-----------------------------------------------------------------------------
  13
  14 #ifdef __GNUG__
  15     #pragma implementation "custclas.h"
  16 #endif
  17
  18 //-----------------------------------------------------------------------------
  19 // Standard wxWidgets headers
  20 //-----------------------------------------------------------------------------
  21
  22 // For compilers that support precompilation, includes "wx/wx.h".
  23 #include "wx/wxprec.h"
  24
  25 #ifdef __BORLANDC__
  26     #pragma hdrstop
  27 #endif
  28
  29 // For all others, include the necessary headers (this file is usually all you
  30 // need because it includes almost all "standard" wxWidgets headers)
  31 #ifndef WX_PRECOMP
  32     #include "wx/wx.h"
  33 #endif
  34
  35 //-----------------------------------------------------------------------------
  36 // Header of this .cpp file
  37 //-----------------------------------------------------------------------------
  38
  39 #include "custclas.h"
  40
  41 //-----------------------------------------------------------------------------
  42 // Internal constants
  43 //-----------------------------------------------------------------------------
  44
  45 // Popup menu (PU) item control IDs. In this example, they aren't hooked up
  46 // to any functions. Normally you would use these IDs in your event table, so
  47 // that if one of these menu items is clicked, then a certain function is
  48 // called.
  49 enum {
  50     PU_ADD_RECORD        = wxID_HIGHEST + 1,
  51     PU_EDIT_RECORD,
  52     PU_DELETE_RECORD
  53 };
  54
  55 // Columns of the listctrl (the leftmost one starts at 0, and so on).
  56 // Allows easier code maintenance if want to add/rearrangement of listctrl's
  57 // columns.
  58 enum {
  59     RECORD_COLUMN    = 0,
  60     ACTION_COLUMN,
  61     PRIORITY_COLUMN
  62 };
  63
  64 //-----------------------------------------------------------------------------
  65 // wxWidgets macro: implement dynamic class
  66 //-----------------------------------------------------------------------------
  67
  68 IMPLEMENT_DYNAMIC_CLASS( MyResizableListCtrl, wxListCtrl )
  69
  70 //-----------------------------------------------------------------------------
  71 // Event table: connect the events to the handler functions to process them
  72 //-----------------------------------------------------------------------------
  73
  74 BEGIN_EVENT_TABLE( MyResizableListCtrl, wxListCtrl )
  75     // Something to do when right mouse down
  76     EVT_RIGHT_DOWN( MyResizableListCtrl::ContextSensitiveMenu )
  77     // Something to do when resized
  78     EVT_SIZE( MyResizableListCtrl::OnSize )
  79 END_EVENT_TABLE()
  80
  81 //-----------------------------------------------------------------------------
  82 // Public methods
  83 //-----------------------------------------------------------------------------
  84
  85 // Constructor, including setting the dialog's m_configuration_section member
  86 // to the incoming configuration_section string.
  87 MyResizableListCtrl::MyResizableListCtrl( wxWindow *parent, wxWindowID id,
  88                                         const wxPoint& pos, const wxSize& size,
  89                                         long style, const wxValidator& validator,
  90                                         const wxString& name )
  91    : wxListCtrl( parent, id, pos, size, style, validator, name )
  92 {
  93
  94     // This listctrl needs to insert its columns in the constructor, since
  95     // as soon as the listctrl is built, it is resized and grafted onto an
  96     // "unknown" XRC placeholder. This induces an OnSize() event, calling the
  97     // overrriden OnSize function for this class, which needs to have 3
  98     // columns to resize (else an assert on WXGTK debug build).
  99     InsertColumn( RECORD_COLUMN, _("Record"), wxLIST_FORMAT_LEFT, 140);
 100     InsertColumn( ACTION_COLUMN, _("Action"), wxLIST_FORMAT_LEFT, 70);
 101     InsertColumn( PRIORITY_COLUMN, _("Priority"), wxLIST_FORMAT_LEFT, 70 );
 102 }
 103
 104
 105 void MyResizableListCtrl::ContextSensitiveMenu( wxMouseEvent& event )
 106 {
 107     // Make an instance of a menu.
 108     wxMenu      a_menu;
 109
 110     a_menu.Append( PU_ADD_RECORD, _( "Add a new record...") );
 111     a_menu.Append( PU_EDIT_RECORD, _( "Edit selected record..." ) );
 112     a_menu.Append( PU_DELETE_RECORD, _( "Delete selected record" ) );
 113
 114     // If no listctrl rows selected, then disable the menu items that
 115     // require selection
 116     if ( GetSelectedItemCount() == 0 ) {
 117         a_menu.Enable( PU_EDIT_RECORD, false );
 118         a_menu.Enable( PU_DELETE_RECORD, false );
 119     }
 120
 121     // Show the popup menu (wxWindow::PopupMenu ), at the x,y position
 122     // of the click event
 123     PopupMenu( &a_menu, event.GetPosition() );
 124 }
 125
 126
 127 void MyResizableListCtrl::OnSize( wxSizeEvent &event )
 128 {
 129     // Call our custom width setting function.
 130     SetColumnWidths();
 131     // REQURED event.Skip() call to allow this event to propagate
 132     // upwards so others can do what they need to do in response to
 133     // this size event.
 134     event.Skip();
 135 }
 136
 137
 138 void MyResizableListCtrl::SetColumnWidths()
 139 {
 140     // Get width of entire listctrl
 141     int leftmostColumnWidth = GetSize().x;
 142
 143     // Subtract width of other columns, scrollbar, and some padding
 144     leftmostColumnWidth -= GetColumnWidth( ACTION_COLUMN );
 145     leftmostColumnWidth -= GetColumnWidth( PRIORITY_COLUMN );
 146     leftmostColumnWidth -= wxSystemSettings::GetSystemMetric( wxSYS_VSCROLL_X );
 147     leftmostColumnWidth -= 5;
 148
 149     // Set the column width to the new value.
 150     SetColumnWidth( RECORD_COLUMN, leftmostColumnWidth );
 151
 152     // This is just a debug message in case you want to watch the
 153     // events scroll by as you resize.
 154     wxLogDebug( wxT("Successfully set column widths") );
 155 }
 156
 157