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__)
  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 #ifdef __GNUWIN32_OLD__
  43     #include "wx/msw/gnuwin32/extra.h"
  44 #endif
  45
  46 #ifdef __SALFORDC__
  47     #include <shellapi.h>
  48 #endif
  49
  50 #include "wx/listimpl.cpp"
  51 WX_DEFINE_LIST(wxTaskBarIconList);
  52
  53 LRESULT APIENTRY _EXPORT
  54 wxTaskBarIconWindowProc( HWND hWnd, unsigned msg, UINT wParam, LONG lParam );
  55
  56 wxChar *wxTaskBarWindowClass = (wxChar*) wxT("wxTaskBarWindowClass");
  57
  58 wxTaskBarIconList wxTaskBarIcon::sm_taskBarIcons;
  59
  60 // initialized on demand
  61 UINT   gs_msgTaskbar = 0;
  62 UINT   gs_msgRestartTaskbar = 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 // implementation
  81 // ============================================================================
  82
  83 // ----------------------------------------------------------------------------
  84 // NotifyIconData: wrapper around NOTIFYICONDATA
  85 // ----------------------------------------------------------------------------
  86
  87 struct NotifyIconData : public NOTIFYICONDATA
  88 {
  89     NotifyIconData(WXHWND hwnd)
  90     {
  91         memset(this, 0, sizeof(NOTIFYICONDATA));
  92         cbSize = sizeof(NOTIFYICONDATA);
  93         hWnd = (HWND) hwnd;
  94         uCallbackMessage = gs_msgTaskbar;
  95         uFlags = NIF_MESSAGE;
  96
  97         // we use the same id for all taskbar icons as we don't need it to
  98         // distinguish between them
  99         uID = 99;
 100     }
 101 };
 102
 103 // ----------------------------------------------------------------------------
 104 // wxTaskBarIcon
 105 // ----------------------------------------------------------------------------
 106
 107 wxTaskBarIcon::wxTaskBarIcon()
 108 {
 109     m_hWnd = 0;
 110     m_iconAdded = false;
 111
 112     AddObject(this);
 113
 114     if (RegisterWindowClass())
 115         m_hWnd = CreateTaskBarWindow();
 116 }
 117
 118 wxTaskBarIcon::~wxTaskBarIcon()
 119 {
 120     RemoveObject(this);
 121
 122     if (m_iconAdded)
 123     {
 124         RemoveIcon();
 125     }
 126
 127     if (m_hWnd)
 128     {
 129         ::DestroyWindow((HWND) m_hWnd);
 130         m_hWnd = 0;
 131     }
 132 }
 133
 134 // Operations
 135 bool wxTaskBarIcon::SetIcon(const wxIcon& icon, const wxString& tooltip)
 136 {
 137     if (!IsOk())
 138         return false;
 139
 140     m_icon = icon;
 141     m_strTooltip = tooltip;
 142
 143     NotifyIconData notifyData(m_hWnd);
 144
 145     if (icon.Ok())
 146     {
 147         notifyData.uFlags |= NIF_ICON;
 148         notifyData.hIcon = GetHiconOf(icon);
 149     }
 150
 151     if ( !tooltip.empty() )
 152     {
 153         notifyData.uFlags |= NIF_TIP;
 154         lstrcpyn(notifyData.szTip, tooltip.c_str(), WXSIZEOF(notifyData.szTip));
 155     }
 156
 157     bool ok = Shell_NotifyIcon(m_iconAdded ? NIM_MODIFY
 158                                            : NIM_ADD, &notifyData) != 0;
 159
 160     if ( !m_iconAdded && ok )
 161         m_iconAdded = true;
 162
 163     return ok;
 164 }
 165
 166 bool wxTaskBarIcon::RemoveIcon()
 167 {
 168     if (!m_iconAdded)
 169         return false;
 170
 171     m_iconAdded = false;
 172
 173     NotifyIconData notifyData(m_hWnd);
 174
 175     return Shell_NotifyIcon(NIM_DELETE, &notifyData) != 0;
 176 }
 177
 178 bool wxTaskBarIcon::PopupMenu(wxMenu *menu)
 179 {
 180     static bool s_inPopup = false;
 181
 182     if (s_inPopup)
 183         return false;
 184
 185     s_inPopup = true;
 186
 187     bool        rval = false;
 188     wxWindow*   win;
 189     int         x, y;
 190     wxGetMousePosition(&x, &y);
 191
 192     // is wxFrame the best window type to use???
 193     win = new wxFrame(NULL, -1, wxEmptyString, wxPoint(x,y), wxSize(-1,-1), 0);
 194     win->PushEventHandler(this);
 195
 196     // Remove from record of top-level windows, or will confuse wxWindows
 197     // if we try to exit right now.
 198     wxTopLevelWindows.DeleteObject(win);
 199
 200     menu->UpdateUI();
 201
 202     // Work around a WIN32 bug
 203     ::SetForegroundWindow ((HWND) win->GetHWND ());
 204
 205     rval = win->PopupMenu(menu, 0, 0);
 206
 207     // Work around a WIN32 bug
 208     ::PostMessage ((HWND) win->GetHWND(),WM_NULL,0,0L);
 209
 210     win->PopEventHandler(false);
 211     win->Destroy();
 212     delete win;
 213
 214     s_inPopup = false;
 215
 216     return rval;
 217 }
 218
 219 #if WXWIN_COMPATIBILITY_2_4
 220 // Overridables
 221 void wxTaskBarIcon::OnMouseMove(wxEvent&)         {}
 222 void wxTaskBarIcon::OnLButtonDown(wxEvent&)       {}
 223 void wxTaskBarIcon::OnLButtonUp(wxEvent&)         {}
 224 void wxTaskBarIcon::OnRButtonDown(wxEvent&)       {}
 225 void wxTaskBarIcon::OnRButtonUp(wxEvent&)         {}
 226 void wxTaskBarIcon::OnLButtonDClick(wxEvent&)     {}
 227 void wxTaskBarIcon::OnRButtonDClick(wxEvent&)     {}
 228
 229 void wxTaskBarIcon::_OnMouseMove(wxEvent& e)      { OnMouseMove(e);     }
 230 void wxTaskBarIcon::_OnLButtonDown(wxEvent& e)    { OnLButtonDown(e);   }
 231 void wxTaskBarIcon::_OnLButtonUp(wxEvent& e)      { OnLButtonUp(e);     }
 232 void wxTaskBarIcon::_OnRButtonDown(wxEvent& e)    { OnRButtonDown(e);   }
 233 void wxTaskBarIcon::_OnRButtonUp(wxEvent& e)      { OnRButtonUp(e);     }
 234 void wxTaskBarIcon::_OnLButtonDClick(wxEvent& e)  { OnLButtonDClick(e); }
 235 void wxTaskBarIcon::_OnRButtonDClick(wxEvent& e)  { OnRButtonDClick(e); }
 236 #endif
 237
 238 wxTaskBarIcon* wxTaskBarIcon::FindObjectForHWND(WXHWND hWnd)
 239 {
 240     wxTaskBarIconList::Node *node = sm_taskBarIcons.GetFirst();
 241     while (node)
 242     {
 243         wxTaskBarIcon *obj = node->GetData();
 244         if (obj->GetHWND() == hWnd)
 245             return obj;
 246         node = node->GetNext();
 247     }
 248     return NULL;
 249 }
 250
 251 void wxTaskBarIcon::AddObject(wxTaskBarIcon* obj)
 252 {
 253     sm_taskBarIcons.Append(obj);
 254 }
 255
 256 void wxTaskBarIcon::RemoveObject(wxTaskBarIcon* obj)
 257 {
 258     sm_taskBarIcons.DeleteObject(obj);
 259 }
 260
 261 bool wxTaskBarIcon::RegisterWindowClass()
 262 {
 263     static bool s_registered = false;
 264
 265     if ( s_registered )
 266         return true;
 267
 268     // Taskbar restart msg will be sent to us if the icon needs to be redrawn
 269     gs_msgRestartTaskbar = RegisterWindowMessage(wxT("TaskbarCreated"));
 270
 271     // Also register the taskbar message here
 272     gs_msgTaskbar = ::RegisterWindowMessage(wxT("wxTaskBarIconMessage"));
 273
 274     // set up and register window class
 275     WNDCLASS wc;
 276     wc.style = CS_HREDRAW | CS_VREDRAW;
 277     wc.lpfnWndProc = (WNDPROC) wxTaskBarIconWindowProc;
 278     wc.cbClsExtra = 0;
 279     wc.cbWndExtra = 0;
 280     wc.hInstance = wxGetInstance();
 281     wc.hIcon = 0;
 282     wc.hCursor = 0;
 283     wc.hbrBackground = 0;
 284     wc.lpszMenuName = NULL;
 285     wc.lpszClassName = wxTaskBarWindowClass;
 286
 287     if ( !::RegisterClass(&wc) )
 288     {
 289         wxLogLastError(_T("RegisterClass(taskbar icon)"));
 290
 291         return false;
 292     }
 293
 294     s_registered = true;
 295
 296     return true;
 297 }
 298
 299 WXHWND wxTaskBarIcon::CreateTaskBarWindow()
 300 {
 301     HINSTANCE hInstance = GetModuleHandle(NULL);
 302
 303     HWND hWnd = CreateWindowEx (0, wxTaskBarWindowClass,
 304             wxT("wxTaskBarWindow"),
 305             WS_OVERLAPPED,
 306             0,
 307             0,
 308             10,
 309             10,
 310             NULL,
 311             (HMENU) 0,
 312             hInstance,
 313             NULL);
 314
 315     return (WXHWND) hWnd;
 316 }
 317
 318 // ----------------------------------------------------------------------------
 319 // wxTaskBarIcon window proc
 320 // ----------------------------------------------------------------------------
 321
 322 long wxTaskBarIcon::WindowProc(WXHWND hWnd,
 323                                unsigned int msg,
 324                                unsigned int wParam,
 325                                long lParam)
 326 {
 327     wxEventType eventType = 0;
 328
 329     if (msg == gs_msgRestartTaskbar)   // does the icon need to be redrawn?
 330     {
 331         m_iconAdded = false;
 332         SetIcon(m_icon, m_strTooltip);
 333     }
 334
 335     if (msg != gs_msgTaskbar)
 336         return DefWindowProc((HWND) hWnd, msg, wParam, lParam);
 337
 338     switch (lParam)
 339     {
 340         case WM_LBUTTONDOWN:
 341             eventType = wxEVT_TASKBAR_LEFT_DOWN;
 342             break;
 343
 344         case WM_LBUTTONUP:
 345             eventType = wxEVT_TASKBAR_LEFT_UP;
 346             break;
 347
 348         case WM_RBUTTONDOWN:
 349             eventType = wxEVT_TASKBAR_RIGHT_DOWN;
 350             break;
 351
 352         case WM_RBUTTONUP:
 353             eventType = wxEVT_TASKBAR_RIGHT_UP;
 354             break;
 355
 356         case WM_LBUTTONDBLCLK:
 357             eventType = wxEVT_TASKBAR_LEFT_DCLICK;
 358             break;
 359
 360         case WM_RBUTTONDBLCLK:
 361             eventType = wxEVT_TASKBAR_RIGHT_DCLICK;
 362             break;
 363
 364         case WM_MOUSEMOVE:
 365             eventType = wxEVT_TASKBAR_MOVE;
 366             break;
 367
 368         default:
 369             break;
 370     }
 371
 372     if (eventType)
 373     {
 374         wxTaskBarIconEvent event(eventType, this);
 375
 376         ProcessEvent(event);
 377     }
 378
 379     return 0;
 380 }
 381
 382 LRESULT APIENTRY _EXPORT
 383 wxTaskBarIconWindowProc(HWND hWnd, unsigned msg, UINT wParam, LONG lParam)
 384 {
 385     wxTaskBarIcon *obj = wxTaskBarIcon::FindObjectForHWND((WXHWND) hWnd);
 386     if (obj)
 387         return obj->WindowProc((WXHWND) hWnd, msg, wParam, lParam);
 388     else
 389         return DefWindowProc(hWnd, msg, wParam, lParam);
 390 }
 391
 392 #endif
 393     // __WIN95__