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 #include "wx/menu.h"
  30 #endif
  31
  32 #if defined(__WIN95__) && !defined(__TWIN32__)
  33
  34 #include <windows.h>
  35 #include <string.h>
  36 #include "wx/msw/taskbar.h"
  37 #include "wx/msw/private.h"
  38
  39 #ifndef __TWIN32__
  40 #ifdef __GNUWIN32__
  41 #ifndef wxUSE_NORLANDER_HEADERS
  42 #include "wx/msw/gnuwin32/extra.h"
  43 #endif
  44 #endif
  45 #endif
  46
  47 #ifdef __SALFORDC__
  48 #include <shellapi.h>
  49 #endif
  50
  51 LRESULT APIENTRY _EXPORT wxTaskBarIconWindowProc( HWND hWnd, unsigned msg,
  52                                      UINT wParam, LONG lParam );
  53
  54 wxChar *wxTaskBarWindowClass = wxT("wxTaskBarWindowClass");
  55
  56 wxList wxTaskBarIcon::sm_taskBarIcons;
  57 bool   wxTaskBarIcon::sm_registeredClass = FALSE;
  58 UINT   wxTaskBarIcon::sm_taskbarMsg = 0;
  59
  60
  61 BEGIN_EVENT_TABLE(wxTaskBarIcon, wxEvtHandler)
  62     EVT_TASKBAR_MOVE         (wxTaskBarIcon::_OnMouseMove)
  63     EVT_TASKBAR_LEFT_DOWN    (wxTaskBarIcon::_OnLButtonDown)
  64     EVT_TASKBAR_LEFT_UP      (wxTaskBarIcon::_OnLButtonUp)
  65     EVT_TASKBAR_RIGHT_DOWN   (wxTaskBarIcon::_OnRButtonDown)
  66     EVT_TASKBAR_RIGHT_UP     (wxTaskBarIcon::_OnRButtonUp)
  67     EVT_TASKBAR_LEFT_DCLICK  (wxTaskBarIcon::_OnLButtonDClick)
  68     EVT_TASKBAR_RIGHT_DCLICK (wxTaskBarIcon::_OnRButtonDClick)
  69 END_EVENT_TABLE()
  70
  71
  72 IMPLEMENT_DYNAMIC_CLASS(wxTaskBarIcon, wxEvtHandler)
  73
  74
  75 wxTaskBarIcon::wxTaskBarIcon(void)
  76 {
  77     m_hWnd = 0;
  78     m_iconAdded = FALSE;
  79
  80     AddObject(this);
  81
  82     if (RegisterWindowClass())
  83         m_hWnd = CreateTaskBarWindow();
  84 }
  85
  86 wxTaskBarIcon::~wxTaskBarIcon(void)
  87 {
  88     RemoveObject(this);
  89
  90     if (m_iconAdded)
  91     {
  92         RemoveIcon();
  93     }
  94
  95     if (m_hWnd)
  96     {
  97         ::DestroyWindow((HWND) m_hWnd);
  98         m_hWnd = 0;
  99     }
 100 }
 101
 102 // Operations
 103 bool wxTaskBarIcon::SetIcon(const wxIcon& icon, const wxString& tooltip)
 104 {
 105     if (!IsOK())
 106         return FALSE;
 107
 108     NOTIFYICONDATA notifyData;
 109
 110     memset(&notifyData, 0, sizeof(notifyData));
 111         notifyData.cbSize = sizeof(notifyData);
 112         notifyData.hWnd = (HWND) m_hWnd;
 113         notifyData.uCallbackMessage = sm_taskbarMsg;
 114         notifyData.uFlags = NIF_MESSAGE ;
 115         if (icon.Ok())
 116     {
 117                 notifyData.uFlags |= NIF_ICON;
 118             notifyData.hIcon = (HICON) icon.GetHICON();
 119     }
 120
 121     if (((const wxChar*) tooltip != NULL) && (tooltip != wxT("")))
 122     {
 123         notifyData.uFlags |= NIF_TIP ;
 124                 lstrcpyn(notifyData.szTip, WXSTRINGCAST tooltip, sizeof(notifyData.szTip));
 125     }
 126
 127     notifyData.uID = 99;
 128
 129     if (m_iconAdded)
 130         return (Shell_NotifyIcon(NIM_MODIFY, & notifyData) != 0);
 131     else
 132     {
 133         m_iconAdded = (Shell_NotifyIcon(NIM_ADD, & notifyData) != 0);
 134         return m_iconAdded;
 135     }
 136 }
 137
 138 bool wxTaskBarIcon::RemoveIcon(void)
 139 {
 140     if (!m_iconAdded)
 141         return FALSE;
 142
 143     NOTIFYICONDATA notifyData;
 144
 145     memset(&notifyData, 0, sizeof(notifyData));
 146         notifyData.cbSize = sizeof(notifyData);
 147         notifyData.hWnd = (HWND) m_hWnd;
 148         notifyData.uCallbackMessage = sm_taskbarMsg;
 149         notifyData.uFlags = NIF_MESSAGE;
 150         notifyData.hIcon = 0 ; // hIcon;
 151     notifyData.uID = 99;
 152     m_iconAdded = FALSE;
 153
 154     return (Shell_NotifyIcon(NIM_DELETE, & notifyData) != 0);
 155 }
 156
 157 bool wxTaskBarIcon::PopupMenu(wxMenu *menu) //, int x, int y);
 158 {
 159     // OK, so I know this isn't thread-friendly, but
 160     // what to do? We need this check.
 161
 162     static bool s_inPopup = FALSE;
 163
 164     if (s_inPopup)
 165         return FALSE;
 166
 167     s_inPopup = TRUE;
 168
 169     bool        rval = FALSE;
 170     wxWindow*   win;
 171     int         x, y;
 172     wxGetMousePosition(&x, &y);
 173
 174     // is wxFrame the best window type to use???
 175     win = new wxFrame(NULL, -1, "", wxPoint(x,y), wxSize(-1,-1), 0);
 176     win->PushEventHandler(this);
 177
 178     // Remove from record of top-level windows, or will confuse wxWindows
 179     // if we try to exit right now.
 180     wxTopLevelWindows.DeleteObject(win);
 181
 182     menu->UpdateUI();
 183
 184     rval = win->PopupMenu(menu, 0, 0);
 185
 186     win->PopEventHandler(FALSE);
 187     win->Destroy();
 188     delete win;
 189
 190     s_inPopup = FALSE;
 191
 192     return rval;
 193 }
 194
 195
 196 // Overridables
 197 void wxTaskBarIcon::OnMouseMove(wxEvent&)
 198 {
 199 }
 200
 201 void wxTaskBarIcon::OnLButtonDown(wxEvent&)
 202 {
 203 }
 204
 205 void wxTaskBarIcon::OnLButtonUp(wxEvent&)
 206 {
 207 }
 208
 209 void wxTaskBarIcon::OnRButtonDown(wxEvent&)
 210 {
 211 }
 212
 213 void wxTaskBarIcon::OnRButtonUp(wxEvent&)
 214 {
 215 }
 216
 217 void wxTaskBarIcon::OnLButtonDClick(wxEvent&)
 218 {
 219 }
 220
 221 void wxTaskBarIcon::OnRButtonDClick(wxEvent&)
 222 {
 223 }
 224
 225 void wxTaskBarIcon::_OnMouseMove(wxEvent& e)      { OnMouseMove(e);     }
 226 void wxTaskBarIcon::_OnLButtonDown(wxEvent& e)    { OnLButtonDown(e);   }
 227 void wxTaskBarIcon::_OnLButtonUp(wxEvent& e)      { OnLButtonUp(e);     }
 228 void wxTaskBarIcon::_OnRButtonDown(wxEvent& e)    { OnRButtonDown(e);   }
 229 void wxTaskBarIcon::_OnRButtonUp(wxEvent& e)      { OnRButtonUp(e);     }
 230 void wxTaskBarIcon::_OnLButtonDClick(wxEvent& e)  { OnLButtonDClick(e); }
 231 void wxTaskBarIcon::_OnRButtonDClick(wxEvent& e)  { OnRButtonDClick(e); }
 232
 233
 234 wxTaskBarIcon* wxTaskBarIcon::FindObjectForHWND(WXHWND hWnd)
 235 {
 236     wxNode*node = sm_taskBarIcons.First();
 237     while (node)
 238     {
 239         wxTaskBarIcon* obj = (wxTaskBarIcon*) node->Data();
 240         if (obj->GetHWND() == hWnd)
 241             return obj;
 242         node = node->Next();
 243     }
 244     return NULL;
 245 }
 246
 247 void wxTaskBarIcon::AddObject(wxTaskBarIcon* obj)
 248 {
 249     sm_taskBarIcons.Append(obj);
 250 }
 251
 252 void wxTaskBarIcon::RemoveObject(wxTaskBarIcon* obj)
 253 {
 254     sm_taskBarIcons.DeleteObject(obj);
 255 }
 256
 257 bool wxTaskBarIcon::RegisterWindowClass()
 258 {
 259     if (sm_registeredClass)
 260         return TRUE;
 261
 262     // Also register the taskbar message here
 263     sm_taskbarMsg = ::RegisterWindowMessage(wxT("wxTaskBarIconMessage"));
 264
 265     WNDCLASS    wc;
 266     bool        rc;
 267
 268     HINSTANCE hInstance = GetModuleHandle(NULL);
 269
 270     /*
 271      * set up and register window class
 272      */
 273     wc.style = CS_HREDRAW | CS_VREDRAW;
 274     wc.lpfnWndProc = (WNDPROC) wxTaskBarIconWindowProc;
 275     wc.cbClsExtra = 0;
 276     wc.cbWndExtra = 0;
 277     wc.hInstance = hInstance;
 278     wc.hIcon = 0;
 279     wc.hCursor = 0;
 280     wc.hbrBackground = 0;
 281     wc.lpszMenuName = NULL;
 282     wc.lpszClassName = wxTaskBarWindowClass ;
 283     rc = (::RegisterClass( &wc ) != 0);
 284
 285     sm_registeredClass = (rc != 0);
 286
 287     return( (rc != 0) );
 288 }
 289
 290 WXHWND wxTaskBarIcon::CreateTaskBarWindow()
 291 {
 292     HINSTANCE hInstance = GetModuleHandle(NULL);
 293
 294     HWND hWnd = CreateWindowEx (0, wxTaskBarWindowClass,
 295             wxT("wxTaskBarWindow"),
 296             WS_OVERLAPPED,
 297             0,
 298             0,
 299             10,
 300             10,
 301             NULL,
 302             (HMENU) 0,
 303             hInstance,
 304             NULL);
 305
 306     return (WXHWND) hWnd;
 307 }
 308
 309 long wxTaskBarIcon::WindowProc( WXHWND hWnd, unsigned int msg, unsigned int wParam, long lParam )
 310 {
 311     wxEventType eventType = 0;
 312
 313     if (msg != sm_taskbarMsg)
 314         return DefWindowProc((HWND) hWnd, msg, wParam, lParam);
 315
 316     switch (lParam)
 317     {
 318         case WM_LBUTTONDOWN:
 319             eventType = wxEVT_TASKBAR_LEFT_DOWN;
 320             break;
 321
 322         case WM_LBUTTONUP:
 323             eventType = wxEVT_TASKBAR_LEFT_UP;
 324             break;
 325
 326         case WM_RBUTTONDOWN:
 327             eventType = wxEVT_TASKBAR_RIGHT_DOWN;
 328             break;
 329
 330         case WM_RBUTTONUP:
 331             eventType = wxEVT_TASKBAR_RIGHT_UP;
 332             break;
 333
 334         case WM_LBUTTONDBLCLK:
 335             eventType = wxEVT_TASKBAR_LEFT_DCLICK;
 336             break;
 337
 338         case WM_RBUTTONDBLCLK:
 339             eventType = wxEVT_TASKBAR_RIGHT_DCLICK;
 340             break;
 341
 342         case WM_MOUSEMOVE:
 343             eventType = wxEVT_TASKBAR_MOVE;
 344             break;
 345
 346         default:
 347             break;
 348         }
 349
 350     if (eventType) {
 351         wxEvent event;
 352         event.SetEventType(eventType);
 353         event.SetEventObject(this);
 354
 355         ProcessEvent(event);
 356     }
 357     return 0;
 358 }
 359
 360 LRESULT APIENTRY _EXPORT wxTaskBarIconWindowProc( HWND hWnd, unsigned msg,
 361                                      UINT wParam, LONG lParam )
 362 {
 363     wxTaskBarIcon* obj = wxTaskBarIcon::FindObjectForHWND((WXHWND) hWnd);
 364     if (obj)
 365         return obj->WindowProc((WXHWND) hWnd, msg, wParam, lParam);
 366     else
 367         return DefWindowProc(hWnd, msg, wParam, lParam);
 368 }
 369
 370 #endif
 371     // __WIN95__