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