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     // If we delete an item, we should initialize the parent panel,
  61     // because it could now be invalid.
  62     wxWindow *parent = (wxWindow *)GetParent();
  63     if (parent)
  64     {
  65         if (parent->GetDefaultItem() == (wxButton*) this)
  66             parent->SetDefaultItem(NULL);
  67     }
  68 }
  69
  70 bool wxControl::ProcessCommand(wxCommandEvent& event)
  71 {
  72 #if WXWIN_COMPATIBILITY
  73     if ( m_callback )
  74     {
  75         (void)(*m_callback)(this, event);
  76
  77         return TRUE;
  78     }
  79     else
  80 #endif // WXWIN_COMPATIBILITY
  81
  82     return GetEventHandler()->ProcessEvent(event);
  83 }
  84
  85 #ifdef __WIN95__
  86 bool wxControl::MSWOnNotify(int idCtrl,
  87                             WXLPARAM lParam,
  88                             WXLPARAM* result)
  89 {
  90     wxCommandEvent event(wxEVT_NULL, m_windowId);
  91     wxEventType eventType = wxEVT_NULL;
  92     NMHDR *hdr1 = (NMHDR*) lParam;
  93     switch ( hdr1->code )
  94     {
  95         case NM_CLICK:
  96             eventType = wxEVT_COMMAND_LEFT_CLICK;
  97             break;
  98
  99         case NM_DBLCLK:
 100             eventType = wxEVT_COMMAND_LEFT_DCLICK;
 101             break;
 102
 103         case NM_RCLICK:
 104             eventType = wxEVT_COMMAND_RIGHT_CLICK;
 105             break;
 106
 107         case NM_RDBLCLK:
 108             eventType = wxEVT_COMMAND_RIGHT_DCLICK;
 109             break;
 110
 111         case NM_SETFOCUS:
 112             eventType = wxEVT_COMMAND_SET_FOCUS;
 113             break;
 114
 115         case NM_KILLFOCUS:
 116             eventType = wxEVT_COMMAND_KILL_FOCUS;
 117             break;
 118
 119         case NM_RETURN:
 120             eventType = wxEVT_COMMAND_ENTER;
 121             break;
 122
 123         default:
 124             return wxWindow::MSWOnNotify(idCtrl, lParam, result);
 125     }
 126
 127     event.SetEventType(eventType);
 128     event.SetEventObject(this);
 129
 130     return GetEventHandler()->ProcessEvent(event);
 131 }
 132 #endif // Win95
 133
 134 void wxControl::OnEraseBackground(wxEraseEvent& event)
 135 {
 136     // In general, you don't want to erase the background of a control,
 137     // or you'll get a flicker.
 138     // TODO: move this 'null' function into each control that
 139     // might flicker.
 140
 141     RECT rect;
 142     ::GetClientRect((HWND) GetHWND(), &rect);
 143
 144     HBRUSH hBrush = ::CreateSolidBrush(PALETTERGB(GetBackgroundColour().Red(),
 145                                                   GetBackgroundColour().Green(),
 146                                                   GetBackgroundColour().Blue()));
 147     int mode = ::SetMapMode((HDC) event.GetDC()->GetHDC(), MM_TEXT);
 148
 149     ::FillRect ((HDC) event.GetDC()->GetHDC(), &rect, hBrush);
 150     ::DeleteObject(hBrush);
 151     ::SetMapMode((HDC) event.GetDC()->GetHDC(), mode);
 152 }
 153
 154 // ---------------------------------------------------------------------------
 155 // global functions
 156 // ---------------------------------------------------------------------------
 157
 158 // Call this repeatedly for several wnds to find the overall size
 159 // of the widget.
 160 // Call it initially with -1 for all values in rect.
 161 // Keep calling for other widgets, and rect will be modified
 162 // to calculate largest bounding rectangle.
 163 void wxFindMaxSize(WXHWND wnd, RECT *rect)
 164 {
 165     int left = rect->left;
 166     int right = rect->right;
 167     int top = rect->top;
 168     int bottom = rect->bottom;
 169
 170     GetWindowRect((HWND) wnd, rect);
 171
 172     if (left < 0)
 173         return;
 174
 175     if (left < rect->left)
 176         rect->left = left;
 177
 178     if (right > rect->right)
 179         rect->right = right;
 180
 181     if (top < rect->top)
 182         rect->top = top;
 183
 184     if (bottom > rect->bottom)
 185         rect->bottom = bottom;
 186 }
 187