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 #endif
  30
  31 #if defined(__WIN95__) && !defined(__TWIN32__)
  32
  33 #include <windows.h>
  34 #include <string.h>
  35 #include <wx/msw/taskbar.h>
  36 #include <wx/msw/private.h>
  37
  38 #ifndef __TWIN32__
  39 #ifdef __GNUWIN32__
  40 #ifndef wxUSE_NORLANDER_HEADERS
  41 #include <wx/msw/gnuwin32/extra.h>
  42 #endif
  43 #endif
  44 #endif
  45
  46 #ifdef __SALFORDC__
  47 #include <shellapi.h>
  48 #endif
  49
  50 LRESULT APIENTRY _EXPORT wxTaskBarIconWindowProc( HWND hWnd, unsigned msg,
  51                                      UINT wParam, LONG lParam );
  52
  53 wxChar *wxTaskBarWindowClass = _T("wxTaskBarWindowClass");
  54
  55 wxList wxTaskBarIcon::sm_taskBarIcons;
  56 bool   wxTaskBarIcon::sm_registeredClass = FALSE;
  57 UINT   wxTaskBarIcon::sm_taskbarMsg = 0;
  58
  59
  60 #if !USE_SHARED_LIBRARY
  61 BEGIN_EVENT_TABLE(wxTaskBarIcon, wxEvtHandler)
  62     EVT_TASKBAR_MOVE         (wxTaskBarIcon::_OnMouseMove)
  63     EVT_TASKBAR_LEFT_DOWN    (wxTaskBarIcon::_OnLButtonDown)
  64     EVT_TASKBAR_LEFT_UP      (wxTaskBarIcon::_OnLButtonUp)
  65     EVT_TASKBAR_RIGHT_DOWN   (wxTaskBarIcon::_OnRButtonDown)
  66     EVT_TASKBAR_RIGHT_UP     (wxTaskBarIcon::_OnRButtonUp)
  67     EVT_TASKBAR_LEFT_DCLICK  (wxTaskBarIcon::_OnLButtonDClick)
  68     EVT_TASKBAR_RIGHT_DCLICK (wxTaskBarIcon::_OnRButtonDClick)
  69 END_EVENT_TABLE()
  70
  71
  72 IMPLEMENT_DYNAMIC_CLASS(wxTaskBarIcon, wxEvtHandler)
  73 #endif
  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 != _T("")))
 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     bool        rval = FALSE;
 161     wxWindow*   win;
 162     int         x, y;
 163     wxGetMousePosition(&x, &y);
 164
 165     // is wxFrame the best window type to use???
 166     win = new wxFrame(NULL, -1, "", wxPoint(x,y), wxSize(-1,-1), 0);
 167     win->PushEventHandler(this);
 168
 169     // Remove from record of top-level windows, or will confuse wxWindows
 170     // if we try to exit right now.
 171     wxTopLevelWindows.DeleteObject(win);
 172
 173     menu->UpdateUI();
 174
 175     rval = win->PopupMenu(menu, 0, 0);
 176
 177     win->PopEventHandler(FALSE);
 178     win->Destroy();
 179     //delete win;
 180
 181     return rval;
 182 }
 183
 184
 185 // Overridables
 186 void wxTaskBarIcon::OnMouseMove(wxEvent&)
 187 {
 188 }
 189
 190 void wxTaskBarIcon::OnLButtonDown(wxEvent&)
 191 {
 192 }
 193
 194 void wxTaskBarIcon::OnLButtonUp(wxEvent&)
 195 {
 196 }
 197
 198 void wxTaskBarIcon::OnRButtonDown(wxEvent&)
 199 {
 200 }
 201
 202 void wxTaskBarIcon::OnRButtonUp(wxEvent&)
 203 {
 204 }
 205
 206 void wxTaskBarIcon::OnLButtonDClick(wxEvent&)
 207 {
 208 }
 209
 210 void wxTaskBarIcon::OnRButtonDClick(wxEvent&)
 211 {
 212 }
 213
 214 void wxTaskBarIcon::_OnMouseMove(wxEvent& e)      { OnMouseMove(e);     }
 215 void wxTaskBarIcon::_OnLButtonDown(wxEvent& e)    { OnLButtonDown(e);   }
 216 void wxTaskBarIcon::_OnLButtonUp(wxEvent& e)      { OnLButtonUp(e);     }
 217 void wxTaskBarIcon::_OnRButtonDown(wxEvent& e)    { OnRButtonDown(e);   }
 218 void wxTaskBarIcon::_OnRButtonUp(wxEvent& e)      { OnRButtonUp(e);     }
 219 void wxTaskBarIcon::_OnLButtonDClick(wxEvent& e)  { OnLButtonDClick(e); }
 220 void wxTaskBarIcon::_OnRButtonDClick(wxEvent& e)  { OnRButtonDClick(e); }
 221
 222
 223 wxTaskBarIcon* wxTaskBarIcon::FindObjectForHWND(WXHWND hWnd)
 224 {
 225     wxNode*node = sm_taskBarIcons.First();
 226     while (node)
 227     {
 228         wxTaskBarIcon* obj = (wxTaskBarIcon*) node->Data();
 229         if (obj->GetHWND() == hWnd)
 230             return obj;
 231         node = node->Next();
 232     }
 233     return NULL;
 234 }
 235
 236 void wxTaskBarIcon::AddObject(wxTaskBarIcon* obj)
 237 {
 238     sm_taskBarIcons.Append(obj);
 239 }
 240
 241 void wxTaskBarIcon::RemoveObject(wxTaskBarIcon* obj)
 242 {
 243     sm_taskBarIcons.DeleteObject(obj);
 244 }
 245
 246 bool wxTaskBarIcon::RegisterWindowClass()
 247 {
 248     if (sm_registeredClass)
 249         return TRUE;
 250
 251     // Also register the taskbar message here
 252     sm_taskbarMsg = ::RegisterWindowMessage(_T("wxTaskBarIconMessage"));
 253
 254     WNDCLASS    wc;
 255     bool        rc;
 256
 257     HINSTANCE hInstance = GetModuleHandle(NULL);
 258
 259     /*
 260      * set up and register window class
 261      */
 262     wc.style = CS_HREDRAW | CS_VREDRAW;
 263     wc.lpfnWndProc = (WNDPROC) wxTaskBarIconWindowProc;
 264     wc.cbClsExtra = 0;
 265     wc.cbWndExtra = 0;
 266     wc.hInstance = hInstance;
 267     wc.hIcon = 0;
 268     wc.hCursor = 0;
 269     wc.hbrBackground = 0;
 270     wc.lpszMenuName = NULL;
 271     wc.lpszClassName = wxTaskBarWindowClass ;
 272     rc = (::RegisterClass( &wc ) != 0);
 273
 274     sm_registeredClass = (rc != 0);
 275
 276     return( (rc != 0) );
 277 }
 278
 279 WXHWND wxTaskBarIcon::CreateTaskBarWindow()
 280 {
 281     HINSTANCE hInstance = GetModuleHandle(NULL);
 282
 283     HWND hWnd = CreateWindowEx (0, wxTaskBarWindowClass,
 284             _T("wxTaskBarWindow"),
 285             WS_OVERLAPPED,
 286             0,
 287             0,
 288             10,
 289             10,
 290             NULL,
 291             (HMENU) 0,
 292             hInstance,
 293             NULL);
 294
 295     return (WXHWND) hWnd;
 296 }
 297
 298 long wxTaskBarIcon::WindowProc( WXHWND hWnd, unsigned int msg, unsigned int wParam, long lParam )
 299 {
 300     wxEventType eventType = 0;
 301
 302     if (msg != sm_taskbarMsg)
 303         return DefWindowProc((HWND) hWnd, msg, wParam, lParam);
 304
 305     switch (lParam)
 306     {
 307         case WM_LBUTTONDOWN:
 308             eventType = wxEVT_TASKBAR_LEFT_DOWN;
 309             break;
 310
 311         case WM_LBUTTONUP:
 312             eventType = wxEVT_TASKBAR_LEFT_UP;
 313             break;
 314
 315         case WM_RBUTTONDOWN:
 316             eventType = wxEVT_TASKBAR_RIGHT_DOWN;
 317             break;
 318
 319         case WM_RBUTTONUP:
 320             eventType = wxEVT_TASKBAR_RIGHT_UP;
 321             break;
 322
 323         case WM_LBUTTONDBLCLK:
 324             eventType = wxEVT_TASKBAR_LEFT_DCLICK;
 325             break;
 326
 327         case WM_RBUTTONDBLCLK:
 328             eventType = wxEVT_TASKBAR_RIGHT_DCLICK;
 329             break;
 330
 331         case WM_MOUSEMOVE:
 332             eventType = wxEVT_TASKBAR_MOVE;
 333             break;
 334
 335         default:
 336             break;
 337         }
 338
 339     if (eventType) {
 340         wxEvent event;
 341         event.SetEventType(eventType);
 342         event.SetEventObject(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__