src/msw/taskbar.cpp

   1 /////////////////////////////////////////////////////////////////////////
   2 // File:        taskbar.cpp
   3 // Purpose:         Implements wxTaskBarIcon class for manipulating icons on
   4 //              the Windows task bar.
   5 // Author:      Julian Smart
   6 // Modified by:
   7 // Created:     24/3/98
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c)
  10 // Licence:     wxWindows licence
  11 /////////////////////////////////////////////////////////////////////////
  12
  13 #ifdef __GNUG__
  14 #pragma implementation "taskbar.h"
  15 #endif
  16
  17 // For compilers that support precompilation, includes "wx.h".
  18 #include "wx/wxprec.h"
  19
  20 #ifdef __BORLANDC__
  21 #pragma hdrstop
  22 #endif
  23
  24 #ifndef WX_PRECOMP
  25 #include "wx/defs.h"
  26 #include "wx/window.h"
  27 #include "wx/frame.h"
  28 #include "wx/utils.h"
  29 #endif
  30
  31 #ifdef __WIN95__
  32
  33 #include <windows.h>
  34 #include <string.h>
  35 #include <wx/msw/taskbar.h>
  36 #include <wx/msw/private.h>
  37
  38 #ifdef __GNUWIN32__
  39 #include <wx/msw/gnuwin32/extra.h>
  40 #endif
  41
  42 #ifdef __SALFORDC__
  43 #include <shellapi.h>
  44 #endif
  45
  46 LRESULT APIENTRY _EXPORT wxTaskBarIconWindowProc( HWND hWnd, unsigned msg,
  47                                      UINT wParam, LONG lParam );
  48
  49 char *wxTaskBarWindowClass = "wxTaskBarWindowClass";
  50
  51 wxList wxTaskBarIcon::sm_taskBarIcons;
  52 bool   wxTaskBarIcon::sm_registeredClass = FALSE;
  53 UINT   wxTaskBarIcon::sm_taskbarMsg = 0;
  54
  55
  56 #if !USE_SHARED_LIBRARY
  57 BEGIN_EVENT_TABLE(wxTaskBarIcon, wxEvtHandler)
  58     EVT_TASKBAR_MOVE         (wxTaskBarIcon::_OnMouseMove)
  59     EVT_TASKBAR_LEFT_DOWN    (wxTaskBarIcon::_OnLButtonDown)
  60     EVT_TASKBAR_LEFT_UP      (wxTaskBarIcon::_OnLButtonUp)
  61     EVT_TASKBAR_RIGHT_DOWN   (wxTaskBarIcon::_OnRButtonDown)
  62     EVT_TASKBAR_RIGHT_UP     (wxTaskBarIcon::_OnRButtonUp)
  63     EVT_TASKBAR_LEFT_DCLICK  (wxTaskBarIcon::_OnLButtonDClick)
  64     EVT_TASKBAR_RIGHT_DCLICK (wxTaskBarIcon::_OnRButtonDClick)
  65 END_EVENT_TABLE()
  66
  67
  68 IMPLEMENT_DYNAMIC_CLASS(wxTaskBarIcon, wxEvtHandler)
  69 #endif
  70
  71
  72 wxTaskBarIcon::wxTaskBarIcon(void)
  73 {
  74     m_hWnd = 0;
  75     m_iconAdded = FALSE;
  76
  77     AddObject(this);
  78
  79     if (RegisterWindowClass())
  80         m_hWnd = CreateTaskBarWindow();
  81 }
  82
  83 wxTaskBarIcon::~wxTaskBarIcon(void)
  84 {
  85     RemoveObject(this);
  86
  87     if (m_iconAdded)
  88     {
  89         RemoveIcon();
  90     }
  91
  92     if (m_hWnd)
  93     {
  94         ::DestroyWindow((HWND) m_hWnd);
  95         m_hWnd = 0;
  96     }
  97 }
  98
  99 // Operations
 100 bool wxTaskBarIcon::SetIcon(const wxIcon& icon, const wxString& tooltip)
 101 {
 102     if (!IsOK())
 103         return FALSE;
 104
 105     NOTIFYICONDATA notifyData;
 106
 107     memset(&notifyData, 0, sizeof(notifyData));
 108         notifyData.cbSize = sizeof(notifyData);
 109         notifyData.hWnd = (HWND) m_hWnd;
 110         notifyData.uCallbackMessage = sm_taskbarMsg;
 111         notifyData.uFlags = NIF_MESSAGE ;
 112         if (icon.Ok())
 113     {
 114                 notifyData.uFlags |= NIF_ICON;
 115             notifyData.hIcon = (HICON) icon.GetHICON();
 116     }
 117
 118     if (((const char*) tooltip != NULL) && (tooltip != ""))
 119     {
 120         notifyData.uFlags |= NIF_TIP ;
 121                 lstrcpyn(notifyData.szTip, (char*) (const char*) tooltip, sizeof(notifyData.szTip));
 122     }
 123
 124     notifyData.uID = 99;
 125
 126     if (m_iconAdded)
 127         return (Shell_NotifyIcon(NIM_MODIFY, & notifyData) != 0);
 128     else
 129     {
 130         m_iconAdded = (Shell_NotifyIcon(NIM_ADD, & notifyData) != 0);
 131         return m_iconAdded;
 132     }
 133 }
 134
 135 bool wxTaskBarIcon::RemoveIcon(void)
 136 {
 137     if (!m_iconAdded)
 138         return FALSE;
 139
 140     NOTIFYICONDATA notifyData;
 141
 142     memset(&notifyData, 0, sizeof(notifyData));
 143         notifyData.cbSize = sizeof(notifyData);
 144         notifyData.hWnd = (HWND) m_hWnd;
 145         notifyData.uCallbackMessage = sm_taskbarMsg;
 146         notifyData.uFlags = NIF_MESSAGE;
 147         notifyData.hIcon = 0 ; // hIcon;
 148     notifyData.uID = 99;
 149     m_iconAdded = FALSE;
 150
 151     return (Shell_NotifyIcon(NIM_DELETE, & notifyData) != 0);
 152 }
 153
 154 bool wxTaskBarIcon::PopupMenu(wxMenu *menu) //, int x, int y);
 155 {
 156     bool        rval = FALSE;
 157     wxWindow*   win;
 158     int         x, y;
 159     wxGetMousePosition(&x, &y);
 160
 161     // is wxFrame the best window type to use???
 162     win = new wxFrame(NULL, -1, "", wxPoint(x,y), wxSize(-1,-1), 0);
 163     win->PushEventHandler(this);
 164
 165     rval = win->PopupMenu(menu, 0, 0);
 166
 167     win->PopEventHandler(FALSE);
 168     win->Destroy();
 169     return rval;
 170 }
 171
 172
 173 // Overridables
 174 void wxTaskBarIcon::OnMouseMove(wxEvent&)
 175 {
 176 }
 177
 178 void wxTaskBarIcon::OnLButtonDown(wxEvent&)
 179 {
 180 }
 181
 182 void wxTaskBarIcon::OnLButtonUp(wxEvent&)
 183 {
 184 }
 185
 186 void wxTaskBarIcon::OnRButtonDown(wxEvent&)
 187 {
 188 }
 189
 190 void wxTaskBarIcon::OnRButtonUp(wxEvent&)
 191 {
 192 }
 193
 194 void wxTaskBarIcon::OnLButtonDClick(wxEvent&)
 195 {
 196 }
 197
 198 void wxTaskBarIcon::OnRButtonDClick(wxEvent&)
 199 {
 200 }
 201
 202 void wxTaskBarIcon::_OnMouseMove(wxEvent& e)      { OnMouseMove(e);     }
 203 void wxTaskBarIcon::_OnLButtonDown(wxEvent& e)    { OnLButtonDown(e);   }
 204 void wxTaskBarIcon::_OnLButtonUp(wxEvent& e)      { OnLButtonUp(e);     }
 205 void wxTaskBarIcon::_OnRButtonDown(wxEvent& e)    { OnRButtonDown(e);   }
 206 void wxTaskBarIcon::_OnRButtonUp(wxEvent& e)      { OnRButtonUp(e);     }
 207 void wxTaskBarIcon::_OnLButtonDClick(wxEvent& e)  { OnLButtonDClick(e); }
 208 void wxTaskBarIcon::_OnRButtonDClick(wxEvent& e)  { OnRButtonDClick(e); }
 209
 210
 211 wxTaskBarIcon* wxTaskBarIcon::FindObjectForHWND(WXHWND hWnd)
 212 {
 213     wxNode*node = sm_taskBarIcons.First();
 214     while (node)
 215     {
 216         wxTaskBarIcon* obj = (wxTaskBarIcon*) node->Data();
 217         if (obj->GetHWND() == hWnd)
 218             return obj;
 219         node = node->Next();
 220     }
 221     return NULL;
 222 }
 223
 224 void wxTaskBarIcon::AddObject(wxTaskBarIcon* obj)
 225 {
 226     sm_taskBarIcons.Append(obj);
 227 }
 228
 229 void wxTaskBarIcon::RemoveObject(wxTaskBarIcon* obj)
 230 {
 231     sm_taskBarIcons.DeleteObject(obj);
 232 }
 233
 234 bool wxTaskBarIcon::RegisterWindowClass()
 235 {
 236     if (sm_registeredClass)
 237         return TRUE;
 238
 239     // Also register the taskbar message here
 240     sm_taskbarMsg = ::RegisterWindowMessage("wxTaskBarIconMessage");
 241
 242     WNDCLASS    wc;
 243     bool        rc;
 244
 245     HINSTANCE hInstance = GetModuleHandle(NULL);
 246
 247     /*
 248      * set up and register window class
 249      */
 250     wc.style = CS_HREDRAW | CS_VREDRAW;
 251     wc.lpfnWndProc = (WNDPROC) wxTaskBarIconWindowProc;
 252     wc.cbClsExtra = 0;
 253     wc.cbWndExtra = 0;
 254     wc.hInstance = hInstance;
 255     wc.hIcon = 0;
 256     wc.hCursor = 0;
 257     wc.hbrBackground = 0;
 258     wc.lpszMenuName = NULL;
 259     wc.lpszClassName = wxTaskBarWindowClass ;
 260     rc = (::RegisterClass( &wc ) != 0);
 261
 262     sm_registeredClass = (rc != 0);
 263
 264     return( (rc != 0) );
 265 }
 266
 267 WXHWND wxTaskBarIcon::CreateTaskBarWindow()
 268 {
 269     HINSTANCE hInstance = GetModuleHandle(NULL);
 270
 271     HWND hWnd = CreateWindowEx (0, wxTaskBarWindowClass,
 272             "wxTaskBarWindow",
 273             WS_OVERLAPPED,
 274             0,
 275             0,
 276             10,
 277             10,
 278             NULL,
 279             (HMENU) 0,
 280             hInstance,
 281             NULL);
 282
 283     return (WXHWND) hWnd;
 284 }
 285
 286 long wxTaskBarIcon::WindowProc( WXHWND hWnd, unsigned int msg, unsigned int wParam, long lParam )
 287 {
 288     wxEventType eventType = 0;
 289
 290     if (msg != sm_taskbarMsg)
 291         return DefWindowProc((HWND) hWnd, msg, wParam, lParam);
 292
 293     switch (lParam)
 294     {
 295         case WM_LBUTTONDOWN:
 296             eventType = wxEVT_TASKBAR_LEFT_DOWN;
 297             break;
 298
 299         case WM_LBUTTONUP:
 300             eventType = wxEVT_TASKBAR_LEFT_UP;
 301             break;
 302
 303         case WM_RBUTTONDOWN:
 304             eventType = wxEVT_TASKBAR_RIGHT_DOWN;
 305             break;
 306
 307         case WM_RBUTTONUP:
 308             eventType = wxEVT_TASKBAR_RIGHT_UP;
 309             break;
 310
 311         case WM_LBUTTONDBLCLK:
 312             eventType = wxEVT_TASKBAR_LEFT_DCLICK;
 313             break;
 314
 315         case WM_RBUTTONDBLCLK:
 316             eventType = wxEVT_TASKBAR_RIGHT_DCLICK;
 317             break;
 318
 319         case WM_MOUSEMOVE:
 320             eventType = wxEVT_TASKBAR_MOVE;
 321             break;
 322
 323         default:
 324             break;
 325         }
 326
 327     if (eventType) {
 328         wxEvent event;
 329         event.SetEventType(eventType);
 330         event.SetEventObject(this);
 331
 332         ProcessEvent(event);
 333     }
 334     return 0;
 335 }
 336
 337 LRESULT APIENTRY _EXPORT wxTaskBarIconWindowProc( HWND hWnd, unsigned msg,
 338                                      UINT wParam, LONG lParam )
 339 {
 340     wxTaskBarIcon* obj = wxTaskBarIcon::FindObjectForHWND((WXHWND) hWnd);
 341     if (obj)
 342         return obj->WindowProc((WXHWND) hWnd, msg, wParam, lParam);
 343     else
 344         return DefWindowProc(hWnd, msg, wParam, lParam);
 345 }
 346
 347 #endif
 348     // __WIN95__