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