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
  36 #include "wx/msw/winundef.h"
  37
  38 #include <string.h>
  39 #include "wx/msw/taskbar.h"
  40 #include "wx/msw/private.h"
  41
  42 #ifndef __TWIN32__
  43     #ifdef __GNUWIN32_OLD__
  44         #include "wx/msw/gnuwin32/extra.h"
  45     #endif
  46 #endif
  47
  48 #ifdef __SALFORDC__
  49     #include <shellapi.h>
  50 #endif
  51
  52 #include "wx/listimpl.cpp"
  53 WX_DEFINE_LIST(wxTaskBarIconList);
  54
  55 LRESULT APIENTRY _EXPORT wxTaskBarIconWindowProc( HWND hWnd, unsigned msg,
  56                                      UINT wParam, LONG lParam );
  57
  58 wxChar *wxTaskBarWindowClass = (wxChar*) wxT("wxTaskBarWindowClass");
  59
  60 wxTaskBarIconList wxTaskBarIcon::sm_taskBarIcons;
  61 bool   wxTaskBarIcon::sm_registeredClass = FALSE;
  62 UINT   wxTaskBarIcon::sm_taskbarMsg = 0;
  63
  64 DEFINE_EVENT_TYPE( wxEVT_TASKBAR_MOVE )
  65 DEFINE_EVENT_TYPE( wxEVT_TASKBAR_LEFT_DOWN )
  66 DEFINE_EVENT_TYPE( wxEVT_TASKBAR_LEFT_UP )
  67 DEFINE_EVENT_TYPE( wxEVT_TASKBAR_RIGHT_DOWN )
  68 DEFINE_EVENT_TYPE( wxEVT_TASKBAR_RIGHT_UP )
  69 DEFINE_EVENT_TYPE( wxEVT_TASKBAR_LEFT_DCLICK )
  70 DEFINE_EVENT_TYPE( wxEVT_TASKBAR_RIGHT_DCLICK )
  71
  72 BEGIN_EVENT_TABLE(wxTaskBarIcon, wxEvtHandler)
  73     EVT_TASKBAR_MOVE         (wxTaskBarIcon::_OnMouseMove)
  74     EVT_TASKBAR_LEFT_DOWN    (wxTaskBarIcon::_OnLButtonDown)
  75     EVT_TASKBAR_LEFT_UP      (wxTaskBarIcon::_OnLButtonUp)
  76     EVT_TASKBAR_RIGHT_DOWN   (wxTaskBarIcon::_OnRButtonDown)
  77     EVT_TASKBAR_RIGHT_UP     (wxTaskBarIcon::_OnRButtonUp)
  78     EVT_TASKBAR_LEFT_DCLICK  (wxTaskBarIcon::_OnLButtonDClick)
  79     EVT_TASKBAR_RIGHT_DCLICK (wxTaskBarIcon::_OnRButtonDClick)
  80 END_EVENT_TABLE()
  81
  82
  83 IMPLEMENT_DYNAMIC_CLASS(wxTaskBarIcon, wxEvtHandler)
  84
  85
  86 wxTaskBarIcon::wxTaskBarIcon(void)
  87 {
  88     m_hWnd = 0;
  89     m_iconAdded = false;
  90
  91     AddObject(this);
  92
  93     if (RegisterWindowClass())
  94         m_hWnd = CreateTaskBarWindow();
  95 }
  96
  97 wxTaskBarIcon::~wxTaskBarIcon(void)
  98 {
  99     RemoveObject(this);
 100
 101     if (m_iconAdded)
 102     {
 103         RemoveIcon();
 104     }
 105
 106     if (m_hWnd)
 107     {
 108         ::DestroyWindow((HWND) m_hWnd);
 109         m_hWnd = 0;
 110     }
 111 }
 112
 113 // Operations
 114 bool wxTaskBarIcon::SetIcon(const wxIcon& icon, const wxString& tooltip)
 115 {
 116     if (!IsOK())
 117         return false;
 118
 119     NOTIFYICONDATA notifyData;
 120
 121     memset(&notifyData, 0, sizeof(notifyData));
 122         notifyData.cbSize = sizeof(notifyData);
 123         notifyData.hWnd = (HWND) m_hWnd;
 124         notifyData.uCallbackMessage = sm_taskbarMsg;
 125         notifyData.uFlags = NIF_MESSAGE ;
 126     if (icon.Ok())
 127     {
 128         notifyData.uFlags |= NIF_ICON;
 129         notifyData.hIcon = (HICON) icon.GetHICON();
 130     }
 131
 132     if (((const wxChar*) tooltip != NULL) && (tooltip != wxT("")))
 133     {
 134         notifyData.uFlags |= NIF_TIP ;
 135                 lstrcpyn(notifyData.szTip, WXSTRINGCAST tooltip, sizeof(notifyData.szTip));
 136     }
 137
 138     notifyData.uID = 99;
 139
 140     if (m_iconAdded)
 141         return (Shell_NotifyIcon(NIM_MODIFY, & notifyData) != 0);
 142     else
 143     {
 144         m_iconAdded = (Shell_NotifyIcon(NIM_ADD, & notifyData) != 0);
 145         return m_iconAdded;
 146     }
 147 }
 148
 149 bool wxTaskBarIcon::RemoveIcon(void)
 150 {
 151     if (!m_iconAdded)
 152         return false;
 153
 154     NOTIFYICONDATA notifyData;
 155
 156     memset(&notifyData, 0, sizeof(notifyData));
 157         notifyData.cbSize = sizeof(notifyData);
 158         notifyData.hWnd = (HWND) m_hWnd;
 159         notifyData.uCallbackMessage = sm_taskbarMsg;
 160         notifyData.uFlags = NIF_MESSAGE;
 161         notifyData.hIcon = 0 ; // hIcon;
 162     notifyData.uID = 99;
 163     m_iconAdded = false;
 164
 165     return (Shell_NotifyIcon(NIM_DELETE, & notifyData) != 0);
 166 }
 167
 168 bool wxTaskBarIcon::PopupMenu(wxMenu *menu) //, int x, int y);
 169 {
 170     // OK, so I know this isn't thread-friendly, but
 171     // what to do? We need this check.
 172
 173     static bool s_inPopup = false;
 174
 175     if (s_inPopup)
 176         return false;
 177
 178     s_inPopup = true;
 179
 180     bool        rval = false;
 181     wxWindow*   win;
 182     int         x, y;
 183     wxGetMousePosition(&x, &y);
 184
 185     // is wxFrame the best window type to use???
 186     win = new wxFrame(NULL, -1, wxEmptyString, wxPoint(x,y), wxSize(-1,-1), 0);
 187     win->PushEventHandler(this);
 188
 189     // Remove from record of top-level windows, or will confuse wxWindows
 190     // if we try to exit right now.
 191     wxTopLevelWindows.DeleteObject(win);
 192
 193     menu->UpdateUI();
 194
 195     // Work around a WIN32 bug
 196     ::SetForegroundWindow ((HWND) win->GetHWND ());
 197
 198     rval = win->PopupMenu(menu, 0, 0);
 199
 200     // Work around a WIN32 bug
 201     ::PostMessage ((HWND) win->GetHWND(),WM_NULL,0,0L);
 202
 203     win->PopEventHandler(false);
 204     win->Destroy();
 205     delete win;
 206
 207     s_inPopup = false;
 208
 209     return rval;
 210 }
 211
 212
 213 // Overridables
 214 void wxTaskBarIcon::OnMouseMove(wxEvent&)
 215 {
 216 }
 217
 218 void wxTaskBarIcon::OnLButtonDown(wxEvent&)
 219 {
 220 }
 221
 222 void wxTaskBarIcon::OnLButtonUp(wxEvent&)
 223 {
 224 }
 225
 226 void wxTaskBarIcon::OnRButtonDown(wxEvent&)
 227 {
 228 }
 229
 230 void wxTaskBarIcon::OnRButtonUp(wxEvent&)
 231 {
 232 }
 233
 234 void wxTaskBarIcon::OnLButtonDClick(wxEvent&)
 235 {
 236 }
 237
 238 void wxTaskBarIcon::OnRButtonDClick(wxEvent&)
 239 {
 240 }
 241
 242 void wxTaskBarIcon::_OnMouseMove(wxEvent& e)      { OnMouseMove(e);     }
 243 void wxTaskBarIcon::_OnLButtonDown(wxEvent& e)    { OnLButtonDown(e);   }
 244 void wxTaskBarIcon::_OnLButtonUp(wxEvent& e)      { OnLButtonUp(e);     }
 245 void wxTaskBarIcon::_OnRButtonDown(wxEvent& e)    { OnRButtonDown(e);   }
 246 void wxTaskBarIcon::_OnRButtonUp(wxEvent& e)      { OnRButtonUp(e);     }
 247 void wxTaskBarIcon::_OnLButtonDClick(wxEvent& e)  { OnLButtonDClick(e); }
 248 void wxTaskBarIcon::_OnRButtonDClick(wxEvent& e)  { OnRButtonDClick(e); }
 249
 250
 251 wxTaskBarIcon* wxTaskBarIcon::FindObjectForHWND(WXHWND hWnd)
 252 {
 253     wxTaskBarIconList::Node *node = sm_taskBarIcons.GetFirst();
 254     while (node)
 255     {
 256         wxTaskBarIcon *obj = node->GetData();
 257         if (obj->GetHWND() == hWnd)
 258             return obj;
 259         node = node->GetNext();
 260     }
 261     return NULL;
 262 }
 263
 264 void wxTaskBarIcon::AddObject(wxTaskBarIcon* obj)
 265 {
 266     sm_taskBarIcons.Append(obj);
 267 }
 268
 269 void wxTaskBarIcon::RemoveObject(wxTaskBarIcon* obj)
 270 {
 271     sm_taskBarIcons.DeleteObject(obj);
 272 }
 273
 274 bool wxTaskBarIcon::RegisterWindowClass()
 275 {
 276     if (sm_registeredClass)
 277         return true;
 278
 279     // Also register the taskbar message here
 280     sm_taskbarMsg = ::RegisterWindowMessage(wxT("wxTaskBarIconMessage"));
 281
 282     WNDCLASS        wc;
 283     bool        rc;
 284
 285     HINSTANCE hInstance = GetModuleHandle(NULL);
 286
 287     /*
 288      * set up and register window class
 289      */
 290     wc.style = CS_HREDRAW | CS_VREDRAW;
 291     wc.lpfnWndProc = (WNDPROC) wxTaskBarIconWindowProc;
 292     wc.cbClsExtra = 0;
 293     wc.cbWndExtra = 0;
 294     wc.hInstance = hInstance;
 295     wc.hIcon = 0;
 296     wc.hCursor = 0;
 297     wc.hbrBackground = 0;
 298     wc.lpszMenuName = NULL;
 299     wc.lpszClassName = wxTaskBarWindowClass ;
 300     rc = (::RegisterClass( &wc ) != 0);
 301
 302     sm_registeredClass = (rc != 0);
 303
 304     return( (rc != 0) );
 305 }
 306
 307 WXHWND wxTaskBarIcon::CreateTaskBarWindow()
 308 {
 309     HINSTANCE hInstance = GetModuleHandle(NULL);
 310
 311     HWND hWnd = CreateWindowEx (0, wxTaskBarWindowClass,
 312             wxT("wxTaskBarWindow"),
 313             WS_OVERLAPPED,
 314             0,
 315             0,
 316             10,
 317             10,
 318             NULL,
 319             (HMENU) 0,
 320             hInstance,
 321             NULL);
 322
 323     return (WXHWND) hWnd;
 324 }
 325
 326 long wxTaskBarIcon::WindowProc( WXHWND hWnd, unsigned int msg, unsigned int wParam, long lParam )
 327 {
 328     wxEventType eventType = 0;
 329
 330     if (msg != sm_taskbarMsg)
 331         return DefWindowProc((HWND) hWnd, msg, wParam, lParam);
 332
 333     switch (lParam)
 334     {
 335         case WM_LBUTTONDOWN:
 336             eventType = wxEVT_TASKBAR_LEFT_DOWN;
 337             break;
 338
 339         case WM_LBUTTONUP:
 340             eventType = wxEVT_TASKBAR_LEFT_UP;
 341             break;
 342
 343         case WM_RBUTTONDOWN:
 344             eventType = wxEVT_TASKBAR_RIGHT_DOWN;
 345             break;
 346
 347         case WM_RBUTTONUP:
 348             eventType = wxEVT_TASKBAR_RIGHT_UP;
 349             break;
 350
 351         case WM_LBUTTONDBLCLK:
 352             eventType = wxEVT_TASKBAR_LEFT_DCLICK;
 353             break;
 354
 355         case WM_RBUTTONDBLCLK:
 356             eventType = wxEVT_TASKBAR_RIGHT_DCLICK;
 357             break;
 358
 359         case WM_MOUSEMOVE:
 360             eventType = wxEVT_TASKBAR_MOVE;
 361             break;
 362
 363         default:
 364             break;
 365         }
 366
 367     if (eventType) {
 368         wxTaskBarIconEvent event(eventType, this);
 369
 370         ProcessEvent(event);
 371     }
 372     return 0;
 373 }
 374
 375 LRESULT APIENTRY _EXPORT wxTaskBarIconWindowProc( HWND hWnd, unsigned msg,
 376                                      UINT wParam, LONG lParam )
 377 {
 378     wxTaskBarIcon *obj = wxTaskBarIcon::FindObjectForHWND((WXHWND) hWnd);
 379     if (obj)
 380         return obj->WindowProc((WXHWND) hWnd, msg, wParam, lParam);
 381     else
 382         return DefWindowProc(hWnd, msg, wParam, lParam);
 383 }
 384
 385 #endif
 386     // __WIN95__