src/msw/control.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        control.cpp
   3 // Purpose:     wxControl class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "control.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include "wx/event.h"
  25 #include "wx/app.h"
  26 #include "wx/dcclient.h"
  27 #endif
  28
  29 #include "wx/control.h"
  30
  31 #include "wx/msw/private.h"
  32
  33 #if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__)
  34 #include <commctrl.h>
  35 #endif
  36
  37 #if !USE_SHARED_LIBRARY
  38 IMPLEMENT_ABSTRACT_CLASS(wxControl, wxWindow)
  39
  40 BEGIN_EVENT_TABLE(wxControl, wxWindow)
  41     EVT_ERASE_BACKGROUND(wxControl::OnEraseBackground)
  42 END_EVENT_TABLE()
  43 #endif
  44
  45 // Item members
  46 wxControl::wxControl()
  47 {
  48   m_backgroundColour = *wxWHITE;
  49   m_foregroundColour = *wxBLACK;
  50
  51 #if WXWIN_COMPATIBILITY
  52   m_callback = 0;
  53 #endif // WXWIN_COMPATIBILITY
  54 }
  55
  56 wxControl::~wxControl()
  57 {
  58     m_isBeingDeleted = TRUE;
  59 }
  60
  61 bool wxControl::ProcessCommand(wxCommandEvent& event)
  62 {
  63 #if WXWIN_COMPATIBILITY
  64     if ( m_callback )
  65     {
  66         (void)(*m_callback)(this, event);
  67
  68         return TRUE;
  69     }
  70     else
  71 #endif // WXWIN_COMPATIBILITY
  72
  73     return GetEventHandler()->ProcessEvent(event);
  74 }
  75
  76 #ifdef __WIN95__
  77 bool wxControl::MSWOnNotify(int idCtrl,
  78                             WXLPARAM lParam,
  79                             WXLPARAM* result)
  80 {
  81     wxCommandEvent event(wxEVT_NULL, m_windowId);
  82     wxEventType eventType = wxEVT_NULL;
  83     NMHDR *hdr1 = (NMHDR*) lParam;
  84     switch ( hdr1->code )
  85     {
  86         case NM_CLICK:
  87             eventType = wxEVT_COMMAND_LEFT_CLICK;
  88             break;
  89
  90         case NM_DBLCLK:
  91             eventType = wxEVT_COMMAND_LEFT_DCLICK;
  92             break;
  93
  94         case NM_RCLICK:
  95             eventType = wxEVT_COMMAND_RIGHT_CLICK;
  96             break;
  97
  98         case NM_RDBLCLK:
  99             eventType = wxEVT_COMMAND_RIGHT_DCLICK;
 100             break;
 101
 102         case NM_SETFOCUS:
 103             eventType = wxEVT_COMMAND_SET_FOCUS;
 104             break;
 105
 106         case NM_KILLFOCUS:
 107             eventType = wxEVT_COMMAND_KILL_FOCUS;
 108             break;
 109
 110         case NM_RETURN:
 111             eventType = wxEVT_COMMAND_ENTER;
 112             break;
 113
 114         default:
 115             return wxWindow::MSWOnNotify(idCtrl, lParam, result);
 116     }
 117
 118     event.SetEventType(eventType);
 119     event.SetEventObject(this);
 120
 121     return GetEventHandler()->ProcessEvent(event);
 122 }
 123 #endif // Win95
 124
 125 void wxControl::OnEraseBackground(wxEraseEvent& event)
 126 {
 127     // In general, you don't want to erase the background of a control,
 128     // or you'll get a flicker.
 129     // TODO: move this 'null' function into each control that
 130     // might flicker.
 131
 132     RECT rect;
 133     ::GetClientRect((HWND) GetHWND(), &rect);
 134
 135     HBRUSH hBrush = ::CreateSolidBrush(PALETTERGB(GetBackgroundColour().Red(),
 136                                                   GetBackgroundColour().Green(),
 137                                                   GetBackgroundColour().Blue()));
 138     int mode = ::SetMapMode((HDC) event.GetDC()->GetHDC(), MM_TEXT);
 139
 140     ::FillRect ((HDC) event.GetDC()->GetHDC(), &rect, hBrush);
 141     ::DeleteObject(hBrush);
 142     ::SetMapMode((HDC) event.GetDC()->GetHDC(), mode);
 143 }
 144
 145 // ---------------------------------------------------------------------------
 146 // global functions
 147 // ---------------------------------------------------------------------------
 148
 149 // Call this repeatedly for several wnds to find the overall size
 150 // of the widget.
 151 // Call it initially with -1 for all values in rect.
 152 // Keep calling for other widgets, and rect will be modified
 153 // to calculate largest bounding rectangle.
 154 void wxFindMaxSize(WXHWND wnd, RECT *rect)
 155 {
 156     int left = rect->left;
 157     int right = rect->right;
 158     int top = rect->top;
 159     int bottom = rect->bottom;
 160
 161     GetWindowRect((HWND) wnd, rect);
 162
 163     if (left < 0)
 164         return;
 165
 166     if (left < rect->left)
 167         rect->left = left;
 168
 169     if (right > rect->right)
 170         rect->right = right;
 171
 172     if (top < rect->top)
 173         rect->top = top;
 174
 175     if (bottom > rect->bottom)
 176         rect->bottom = bottom;
 177 }
 178