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