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 #include <string.h>
  36 #include "wx/msw/taskbar.h"
  37 #include "wx/msw/private.h"
  38
  39 #ifndef __TWIN32__
  40 #ifdef __GNUWIN32__
  41 #ifndef wxUSE_NORLANDER_HEADERS
  42 #include "wx/msw/gnuwin32/extra.h"
  43 #endif
  44 #endif
  45 #endif
  46
  47 #ifdef __SALFORDC__
  48 #include <shellapi.h>
  49 #endif
  50
  51 LRESULT APIENTRY _EXPORT wxTaskBarIconWindowProc( HWND hWnd, unsigned msg,
  52                                      UINT wParam, LONG lParam );
  53
  54 wxChar *wxTaskBarWindowClass = wxT("wxTaskBarWindowClass");
  55
  56 wxList wxTaskBarIcon::sm_taskBarIcons;
  57 bool   wxTaskBarIcon::sm_registeredClass = FALSE;
  58 UINT   wxTaskBarIcon::sm_taskbarMsg = 0;
  59
  60
  61 #if !USE_SHARED_LIBRARY
  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 #endif
  75
  76
  77 wxTaskBarIcon::wxTaskBarIcon(void)
  78 {
  79     m_hWnd = 0;
  80     m_iconAdded = FALSE;
  81
  82     AddObject(this);
  83
  84     if (RegisterWindowClass())
  85         m_hWnd = CreateTaskBarWindow();
  86 }
  87
  88 wxTaskBarIcon::~wxTaskBarIcon(void)
  89 {
  90     RemoveObject(this);
  91
  92     if (m_iconAdded)
  93     {
  94         RemoveIcon();
  95     }
  96
  97     if (m_hWnd)
  98     {
  99         ::DestroyWindow((HWND) m_hWnd);
 100         m_hWnd = 0;
 101     }
 102 }
 103
 104 // Operations
 105 bool wxTaskBarIcon::SetIcon(const wxIcon& icon, const wxString& tooltip)
 106 {
 107     if (!IsOK())
 108         return FALSE;
 109
 110     NOTIFYICONDATA notifyData;
 111
 112     memset(&notifyData, 0, sizeof(notifyData));
 113         notifyData.cbSize = sizeof(notifyData);
 114         notifyData.hWnd = (HWND) m_hWnd;
 115         notifyData.uCallbackMessage = sm_taskbarMsg;
 116         notifyData.uFlags = NIF_MESSAGE ;
 117         if (icon.Ok())
 118     {
 119                 notifyData.uFlags |= NIF_ICON;
 120             notifyData.hIcon = (HICON) icon.GetHICON();
 121     }
 122
 123     if (((const wxChar*) tooltip != NULL) && (tooltip != wxT("")))
 124     {
 125         notifyData.uFlags |= NIF_TIP ;
 126                 lstrcpyn(notifyData.szTip, WXSTRINGCAST tooltip, sizeof(notifyData.szTip));
 127     }
 128
 129     notifyData.uID = 99;
 130
 131     if (m_iconAdded)
 132         return (Shell_NotifyIcon(NIM_MODIFY, & notifyData) != 0);
 133     else
 134     {
 135         m_iconAdded = (Shell_NotifyIcon(NIM_ADD, & notifyData) != 0);
 136         return m_iconAdded;
 137     }
 138 }
 139
 140 bool wxTaskBarIcon::RemoveIcon(void)
 141 {
 142     if (!m_iconAdded)
 143         return FALSE;
 144
 145     NOTIFYICONDATA notifyData;
 146
 147     memset(&notifyData, 0, sizeof(notifyData));
 148         notifyData.cbSize = sizeof(notifyData);
 149         notifyData.hWnd = (HWND) m_hWnd;
 150         notifyData.uCallbackMessage = sm_taskbarMsg;
 151         notifyData.uFlags = NIF_MESSAGE;
 152         notifyData.hIcon = 0 ; // hIcon;
 153     notifyData.uID = 99;
 154     m_iconAdded = FALSE;
 155
 156     return (Shell_NotifyIcon(NIM_DELETE, & notifyData) != 0);
 157 }
 158
 159 bool wxTaskBarIcon::PopupMenu(wxMenu *menu) //, int x, int y);
 160 {
 161     // OK, so I know this isn't thread-friendly, but
 162     // what to do? We need this check.
 163
 164     static bool s_inPopup = FALSE;
 165
 166     if (s_inPopup)
 167         return FALSE;
 168
 169     s_inPopup = TRUE;
 170
 171     bool        rval = FALSE;
 172     wxWindow*   win;
 173     int         x, y;
 174     wxGetMousePosition(&x, &y);
 175
 176     // is wxFrame the best window type to use???
 177     win = new wxFrame(NULL, -1, "", wxPoint(x,y), wxSize(-1,-1), 0);
 178     win->PushEventHandler(this);
 179
 180     // Remove from record of top-level windows, or will confuse wxWindows
 181     // if we try to exit right now.
 182     wxTopLevelWindows.DeleteObject(win);
 183
 184     menu->UpdateUI();
 185
 186     rval = win->PopupMenu(menu, 0, 0);
 187
 188     win->PopEventHandler(FALSE);
 189     win->Destroy();
 190     delete win;
 191
 192     s_inPopup = FALSE;
 193
 194     return rval;
 195 }
 196
 197
 198 // Overridables
 199 void wxTaskBarIcon::OnMouseMove(wxEvent&)
 200 {
 201 }
 202
 203 void wxTaskBarIcon::OnLButtonDown(wxEvent&)
 204 {
 205 }
 206
 207 void wxTaskBarIcon::OnLButtonUp(wxEvent&)
 208 {
 209 }
 210
 211 void wxTaskBarIcon::OnRButtonDown(wxEvent&)
 212 {
 213 }
 214
 215 void wxTaskBarIcon::OnRButtonUp(wxEvent&)
 216 {
 217 }
 218
 219 void wxTaskBarIcon::OnLButtonDClick(wxEvent&)
 220 {
 221 }
 222
 223 void wxTaskBarIcon::OnRButtonDClick(wxEvent&)
 224 {
 225 }
 226
 227 void wxTaskBarIcon::_OnMouseMove(wxEvent& e)      { OnMouseMove(e);     }
 228 void wxTaskBarIcon::_OnLButtonDown(wxEvent& e)    { OnLButtonDown(e);   }
 229 void wxTaskBarIcon::_OnLButtonUp(wxEvent& e)      { OnLButtonUp(e);     }
 230 void wxTaskBarIcon::_OnRButtonDown(wxEvent& e)    { OnRButtonDown(e);   }
 231 void wxTaskBarIcon::_OnRButtonUp(wxEvent& e)      { OnRButtonUp(e);     }
 232 void wxTaskBarIcon::_OnLButtonDClick(wxEvent& e)  { OnLButtonDClick(e); }
 233 void wxTaskBarIcon::_OnRButtonDClick(wxEvent& e)  { OnRButtonDClick(e); }
 234
 235
 236 wxTaskBarIcon* wxTaskBarIcon::FindObjectForHWND(WXHWND hWnd)
 237 {
 238     wxNode*node = sm_taskBarIcons.First();
 239     while (node)
 240     {
 241         wxTaskBarIcon* obj = (wxTaskBarIcon*) node->Data();
 242         if (obj->GetHWND() == hWnd)
 243             return obj;
 244         node = node->Next();
 245     }
 246     return NULL;
 247 }
 248
 249 void wxTaskBarIcon::AddObject(wxTaskBarIcon* obj)
 250 {
 251     sm_taskBarIcons.Append(obj);
 252 }
 253
 254 void wxTaskBarIcon::RemoveObject(wxTaskBarIcon* obj)
 255 {
 256     sm_taskBarIcons.DeleteObject(obj);
 257 }
 258
 259 bool wxTaskBarIcon::RegisterWindowClass()
 260 {
 261     if (sm_registeredClass)
 262         return TRUE;
 263
 264     // Also register the taskbar message here
 265     sm_taskbarMsg = ::RegisterWindowMessage(wxT("wxTaskBarIconMessage"));
 266
 267     WNDCLASS    wc;
 268     bool        rc;
 269
 270     HINSTANCE hInstance = GetModuleHandle(NULL);
 271
 272     /*
 273      * set up and register window class
 274      */
 275     wc.style = CS_HREDRAW | CS_VREDRAW;
 276     wc.lpfnWndProc = (WNDPROC) wxTaskBarIconWindowProc;
 277     wc.cbClsExtra = 0;
 278     wc.cbWndExtra = 0;
 279     wc.hInstance = hInstance;
 280     wc.hIcon = 0;
 281     wc.hCursor = 0;
 282     wc.hbrBackground = 0;
 283     wc.lpszMenuName = NULL;
 284     wc.lpszClassName = wxTaskBarWindowClass ;
 285     rc = (::RegisterClass( &wc ) != 0);
 286
 287     sm_registeredClass = (rc != 0);
 288
 289     return( (rc != 0) );
 290 }
 291
 292 WXHWND wxTaskBarIcon::CreateTaskBarWindow()
 293 {
 294     HINSTANCE hInstance = GetModuleHandle(NULL);
 295
 296     HWND hWnd = CreateWindowEx (0, wxTaskBarWindowClass,
 297             wxT("wxTaskBarWindow"),
 298             WS_OVERLAPPED,
 299             0,
 300             0,
 301             10,
 302             10,
 303             NULL,
 304             (HMENU) 0,
 305             hInstance,
 306             NULL);
 307
 308     return (WXHWND) hWnd;
 309 }
 310
 311 long wxTaskBarIcon::WindowProc( WXHWND hWnd, unsigned int msg, unsigned int wParam, long lParam )
 312 {
 313     wxEventType eventType = 0;
 314
 315     if (msg != sm_taskbarMsg)
 316         return DefWindowProc((HWND) hWnd, msg, wParam, lParam);
 317
 318     switch (lParam)
 319     {
 320         case WM_LBUTTONDOWN:
 321             eventType = wxEVT_TASKBAR_LEFT_DOWN;
 322             break;
 323
 324         case WM_LBUTTONUP:
 325             eventType = wxEVT_TASKBAR_LEFT_UP;
 326             break;
 327
 328         case WM_RBUTTONDOWN:
 329             eventType = wxEVT_TASKBAR_RIGHT_DOWN;
 330             break;
 331
 332         case WM_RBUTTONUP:
 333             eventType = wxEVT_TASKBAR_RIGHT_UP;
 334             break;
 335
 336         case WM_LBUTTONDBLCLK:
 337             eventType = wxEVT_TASKBAR_LEFT_DCLICK;
 338             break;
 339
 340         case WM_RBUTTONDBLCLK:
 341             eventType = wxEVT_TASKBAR_RIGHT_DCLICK;
 342             break;
 343
 344         case WM_MOUSEMOVE:
 345             eventType = wxEVT_TASKBAR_MOVE;
 346             break;
 347
 348         default:
 349             break;
 350         }
 351
 352     if (eventType) {
 353         wxEvent event;
 354         event.SetEventType(eventType);
 355         event.SetEventObject(this);
 356
 357         ProcessEvent(event);
 358     }
 359     return 0;
 360 }
 361
 362 LRESULT APIENTRY _EXPORT wxTaskBarIconWindowProc( HWND hWnd, unsigned msg,
 363                                      UINT wParam, LONG lParam )
 364 {
 365     wxTaskBarIcon* obj = wxTaskBarIcon::FindObjectForHWND((WXHWND) hWnd);
 366     if (obj)
 367         return obj->WindowProc((WXHWND) hWnd, msg, wParam, lParam);
 368     else
 369         return DefWindowProc(hWnd, msg, wParam, lParam);
 370 }
 371
 372 #endif
 373     // __WIN95__