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/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 #if WXWIN_COMPATIBILITY_2_4
  65 BEGIN_EVENT_TABLE(wxTaskBarIcon, wxEvtHandler)
  66     EVT_TASKBAR_MOVE         (wxTaskBarIcon::_OnMouseMove)
  67     EVT_TASKBAR_LEFT_DOWN    (wxTaskBarIcon::_OnLButtonDown)
  68     EVT_TASKBAR_LEFT_UP      (wxTaskBarIcon::_OnLButtonUp)
  69     EVT_TASKBAR_RIGHT_DOWN   (wxTaskBarIcon::_OnRButtonDown)
  70     EVT_TASKBAR_RIGHT_UP     (wxTaskBarIcon::_OnRButtonUp)
  71     EVT_TASKBAR_LEFT_DCLICK  (wxTaskBarIcon::_OnLButtonDClick)
  72     EVT_TASKBAR_RIGHT_DCLICK (wxTaskBarIcon::_OnRButtonDClick)
  73 END_EVENT_TABLE()
  74 #endif
  75
  76
  77 IMPLEMENT_DYNAMIC_CLASS(wxTaskBarIcon, wxEvtHandler)
  78
  79
  80 wxTaskBarIcon::wxTaskBarIcon(void)
  81 {
  82     m_hWnd = 0;
  83     m_iconAdded = false;
  84
  85     AddObject(this);
  86
  87     if (RegisterWindowClass())
  88         m_hWnd = CreateTaskBarWindow();
  89 }
  90
  91 wxTaskBarIcon::~wxTaskBarIcon(void)
  92 {
  93     RemoveObject(this);
  94
  95     if (m_iconAdded)
  96     {
  97         RemoveIcon();
  98     }
  99
 100     if (m_hWnd)
 101     {
 102         ::DestroyWindow((HWND) m_hWnd);
 103         m_hWnd = 0;
 104     }
 105 }
 106
 107 // Operations
 108 bool wxTaskBarIcon::SetIcon(const wxIcon& icon, const wxString& tooltip)
 109 {
 110     if (!IsOk())
 111         return false;
 112
 113     NOTIFYICONDATA notifyData;
 114
 115     memset(&notifyData, 0, sizeof(notifyData));
 116         notifyData.cbSize = sizeof(notifyData);
 117         notifyData.hWnd = (HWND) m_hWnd;
 118         notifyData.uCallbackMessage = sm_taskbarMsg;
 119         notifyData.uFlags = NIF_MESSAGE ;
 120     if (icon.Ok())
 121     {
 122         notifyData.uFlags |= NIF_ICON;
 123         notifyData.hIcon = (HICON) icon.GetHICON();
 124     }
 125
 126     if (((const wxChar*) tooltip != NULL) && (tooltip != wxT("")))
 127     {
 128         notifyData.uFlags |= NIF_TIP ;
 129                 lstrcpyn(notifyData.szTip, WXSTRINGCAST tooltip, sizeof(notifyData.szTip));
 130     }
 131
 132     notifyData.uID = 99;
 133
 134     if (m_iconAdded)
 135         return (Shell_NotifyIcon(NIM_MODIFY, & notifyData) != 0);
 136     else
 137     {
 138         m_iconAdded = (Shell_NotifyIcon(NIM_ADD, & notifyData) != 0);
 139         return m_iconAdded;
 140     }
 141 }
 142
 143 bool wxTaskBarIcon::RemoveIcon(void)
 144 {
 145     if (!m_iconAdded)
 146         return false;
 147
 148     NOTIFYICONDATA notifyData;
 149
 150     memset(&notifyData, 0, sizeof(notifyData));
 151         notifyData.cbSize = sizeof(notifyData);
 152         notifyData.hWnd = (HWND) m_hWnd;
 153         notifyData.uCallbackMessage = sm_taskbarMsg;
 154         notifyData.uFlags = NIF_MESSAGE;
 155         notifyData.hIcon = 0 ; // hIcon;
 156     notifyData.uID = 99;
 157     m_iconAdded = false;
 158
 159     return (Shell_NotifyIcon(NIM_DELETE, & notifyData) != 0);
 160 }
 161
 162 bool wxTaskBarIcon::PopupMenu(wxMenu *menu) //, int x, int y);
 163 {
 164     // OK, so I know this isn't thread-friendly, but
 165     // what to do? We need this check.
 166
 167     static bool s_inPopup = false;
 168
 169     if (s_inPopup)
 170         return false;
 171
 172     s_inPopup = true;
 173
 174     bool        rval = false;
 175     wxWindow*   win;
 176     int         x, y;
 177     wxGetMousePosition(&x, &y);
 178
 179     // is wxFrame the best window type to use???
 180     win = new wxFrame(NULL, -1, wxEmptyString, wxPoint(x,y), wxSize(-1,-1), 0);
 181     win->PushEventHandler(this);
 182
 183     // Remove from record of top-level windows, or will confuse wxWindows
 184     // if we try to exit right now.
 185     wxTopLevelWindows.DeleteObject(win);
 186
 187     menu->UpdateUI();
 188
 189     // Work around a WIN32 bug
 190     ::SetForegroundWindow ((HWND) win->GetHWND ());
 191
 192     rval = win->PopupMenu(menu, 0, 0);
 193
 194     // Work around a WIN32 bug
 195     ::PostMessage ((HWND) win->GetHWND(),WM_NULL,0,0L);
 196
 197     win->PopEventHandler(false);
 198     win->Destroy();
 199     delete win;
 200
 201     s_inPopup = false;
 202
 203     return rval;
 204 }
 205
 206 #if WXWIN_COMPATIBILITY_2_4
 207 // Overridables
 208 void wxTaskBarIcon::OnMouseMove(wxEvent&)         {}
 209 void wxTaskBarIcon::OnLButtonDown(wxEvent&)       {}
 210 void wxTaskBarIcon::OnLButtonUp(wxEvent&)         {}
 211 void wxTaskBarIcon::OnRButtonDown(wxEvent&)       {}
 212 void wxTaskBarIcon::OnRButtonUp(wxEvent&)         {}
 213 void wxTaskBarIcon::OnLButtonDClick(wxEvent&)     {}
 214 void wxTaskBarIcon::OnRButtonDClick(wxEvent&)     {}
 215
 216 void wxTaskBarIcon::_OnMouseMove(wxEvent& e)      { OnMouseMove(e);     }
 217 void wxTaskBarIcon::_OnLButtonDown(wxEvent& e)    { OnLButtonDown(e);   }
 218 void wxTaskBarIcon::_OnLButtonUp(wxEvent& e)      { OnLButtonUp(e);     }
 219 void wxTaskBarIcon::_OnRButtonDown(wxEvent& e)    { OnRButtonDown(e);   }
 220 void wxTaskBarIcon::_OnRButtonUp(wxEvent& e)      { OnRButtonUp(e);     }
 221 void wxTaskBarIcon::_OnLButtonDClick(wxEvent& e)  { OnLButtonDClick(e); }
 222 void wxTaskBarIcon::_OnRButtonDClick(wxEvent& e)  { OnRButtonDClick(e); }
 223 #endif
 224
 225 wxTaskBarIcon* wxTaskBarIcon::FindObjectForHWND(WXHWND hWnd)
 226 {
 227     wxTaskBarIconList::Node *node = sm_taskBarIcons.GetFirst();
 228     while (node)
 229     {
 230         wxTaskBarIcon *obj = node->GetData();
 231         if (obj->GetHWND() == hWnd)
 232             return obj;
 233         node = node->GetNext();
 234     }
 235     return NULL;
 236 }
 237
 238 void wxTaskBarIcon::AddObject(wxTaskBarIcon* obj)
 239 {
 240     sm_taskBarIcons.Append(obj);
 241 }
 242
 243 void wxTaskBarIcon::RemoveObject(wxTaskBarIcon* obj)
 244 {
 245     sm_taskBarIcons.DeleteObject(obj);
 246 }
 247
 248 bool wxTaskBarIcon::RegisterWindowClass()
 249 {
 250     if (sm_registeredClass)
 251         return true;
 252
 253     // Also register the taskbar message here
 254     sm_taskbarMsg = ::RegisterWindowMessage(wxT("wxTaskBarIconMessage"));
 255
 256     WNDCLASS        wc;
 257     bool        rc;
 258
 259     HINSTANCE hInstance = GetModuleHandle(NULL);
 260
 261     /*
 262      * set up and register window class
 263      */
 264     wc.style = CS_HREDRAW | CS_VREDRAW;
 265     wc.lpfnWndProc = (WNDPROC) wxTaskBarIconWindowProc;
 266     wc.cbClsExtra = 0;
 267     wc.cbWndExtra = 0;
 268     wc.hInstance = hInstance;
 269     wc.hIcon = 0;
 270     wc.hCursor = 0;
 271     wc.hbrBackground = 0;
 272     wc.lpszMenuName = NULL;
 273     wc.lpszClassName = wxTaskBarWindowClass ;
 274     rc = (::RegisterClass( &wc ) != 0);
 275
 276     sm_registeredClass = (rc != 0);
 277
 278     return( (rc != 0) );
 279 }
 280
 281 WXHWND wxTaskBarIcon::CreateTaskBarWindow()
 282 {
 283     HINSTANCE hInstance = GetModuleHandle(NULL);
 284
 285     HWND hWnd = CreateWindowEx (0, wxTaskBarWindowClass,
 286             wxT("wxTaskBarWindow"),
 287             WS_OVERLAPPED,
 288             0,
 289             0,
 290             10,
 291             10,
 292             NULL,
 293             (HMENU) 0,
 294             hInstance,
 295             NULL);
 296
 297     return (WXHWND) hWnd;
 298 }
 299
 300 long wxTaskBarIcon::WindowProc( WXHWND hWnd, unsigned int msg, unsigned int wParam, long lParam )
 301 {
 302     wxEventType eventType = 0;
 303
 304     if (msg != sm_taskbarMsg)
 305         return DefWindowProc((HWND) hWnd, msg, wParam, lParam);
 306
 307     switch (lParam)
 308     {
 309         case WM_LBUTTONDOWN:
 310             eventType = wxEVT_TASKBAR_LEFT_DOWN;
 311             break;
 312
 313         case WM_LBUTTONUP:
 314             eventType = wxEVT_TASKBAR_LEFT_UP;
 315             break;
 316
 317         case WM_RBUTTONDOWN:
 318             eventType = wxEVT_TASKBAR_RIGHT_DOWN;
 319             break;
 320
 321         case WM_RBUTTONUP:
 322             eventType = wxEVT_TASKBAR_RIGHT_UP;
 323             break;
 324
 325         case WM_LBUTTONDBLCLK:
 326             eventType = wxEVT_TASKBAR_LEFT_DCLICK;
 327             break;
 328
 329         case WM_RBUTTONDBLCLK:
 330             eventType = wxEVT_TASKBAR_RIGHT_DCLICK;
 331             break;
 332
 333         case WM_MOUSEMOVE:
 334             eventType = wxEVT_TASKBAR_MOVE;
 335             break;
 336
 337         default:
 338             break;
 339         }
 340
 341     if (eventType) {
 342         wxTaskBarIconEvent event(eventType, this);
 343
 344         ProcessEvent(event);
 345     }
 346     return 0;
 347 }
 348
 349 LRESULT APIENTRY _EXPORT wxTaskBarIconWindowProc( HWND hWnd, unsigned msg,
 350                                      UINT wParam, LONG lParam )
 351 {
 352     wxTaskBarIcon *obj = wxTaskBarIcon::FindObjectForHWND((WXHWND) hWnd);
 353     if (obj)
 354         return obj->WindowProc((WXHWND) hWnd, msg, wParam, lParam);
 355     else
 356         return DefWindowProc(hWnd, msg, wParam, lParam);
 357 }
 358
 359 #endif
 360     // __WIN95__