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 #include <wx/msw/gnuwin32/extra.h>
  41 #endif
  42 #endif
  43
  44 #ifdef __SALFORDC__
  45 #include <shellapi.h>
  46 #endif
  47
  48 LRESULT APIENTRY _EXPORT wxTaskBarIconWindowProc( HWND hWnd, unsigned msg,
  49                                      UINT wParam, LONG lParam );
  50
  51 char *wxTaskBarWindowClass = "wxTaskBarWindowClass";
  52
  53 wxList wxTaskBarIcon::sm_taskBarIcons;
  54 bool   wxTaskBarIcon::sm_registeredClass = FALSE;
  55 UINT   wxTaskBarIcon::sm_taskbarMsg = 0;
  56
  57
  58 #if !USE_SHARED_LIBRARY
  59 BEGIN_EVENT_TABLE(wxTaskBarIcon, wxEvtHandler)
  60     EVT_TASKBAR_MOVE         (wxTaskBarIcon::_OnMouseMove)
  61     EVT_TASKBAR_LEFT_DOWN    (wxTaskBarIcon::_OnLButtonDown)
  62     EVT_TASKBAR_LEFT_UP      (wxTaskBarIcon::_OnLButtonUp)
  63     EVT_TASKBAR_RIGHT_DOWN   (wxTaskBarIcon::_OnRButtonDown)
  64     EVT_TASKBAR_RIGHT_UP     (wxTaskBarIcon::_OnRButtonUp)
  65     EVT_TASKBAR_LEFT_DCLICK  (wxTaskBarIcon::_OnLButtonDClick)
  66     EVT_TASKBAR_RIGHT_DCLICK (wxTaskBarIcon::_OnRButtonDClick)
  67 END_EVENT_TABLE()
  68
  69
  70 IMPLEMENT_DYNAMIC_CLASS(wxTaskBarIcon, wxEvtHandler)
  71 #endif
  72
  73
  74 wxTaskBarIcon::wxTaskBarIcon(void)
  75 {
  76     m_hWnd = 0;
  77     m_iconAdded = FALSE;
  78
  79     AddObject(this);
  80
  81     if (RegisterWindowClass())
  82         m_hWnd = CreateTaskBarWindow();
  83 }
  84
  85 wxTaskBarIcon::~wxTaskBarIcon(void)
  86 {
  87     RemoveObject(this);
  88
  89     if (m_iconAdded)
  90     {
  91         RemoveIcon();
  92     }
  93
  94     if (m_hWnd)
  95     {
  96         ::DestroyWindow((HWND) m_hWnd);
  97         m_hWnd = 0;
  98     }
  99 }
 100
 101 // Operations
 102 bool wxTaskBarIcon::SetIcon(const wxIcon& icon, const wxString& tooltip)
 103 {
 104     if (!IsOK())
 105         return FALSE;
 106
 107     NOTIFYICONDATA notifyData;
 108
 109     memset(&notifyData, 0, sizeof(notifyData));
 110         notifyData.cbSize = sizeof(notifyData);
 111         notifyData.hWnd = (HWND) m_hWnd;
 112         notifyData.uCallbackMessage = sm_taskbarMsg;
 113         notifyData.uFlags = NIF_MESSAGE ;
 114         if (icon.Ok())
 115     {
 116                 notifyData.uFlags |= NIF_ICON;
 117             notifyData.hIcon = (HICON) icon.GetHICON();
 118     }
 119
 120     if (((const char*) tooltip != NULL) && (tooltip != ""))
 121     {
 122         notifyData.uFlags |= NIF_TIP ;
 123                 lstrcpyn(notifyData.szTip, (char*) (const char*) tooltip, sizeof(notifyData.szTip));
 124     }
 125
 126     notifyData.uID = 99;
 127
 128     if (m_iconAdded)
 129         return (Shell_NotifyIcon(NIM_MODIFY, & notifyData) != 0);
 130     else
 131     {
 132         m_iconAdded = (Shell_NotifyIcon(NIM_ADD, & notifyData) != 0);
 133         return m_iconAdded;
 134     }
 135 }
 136
 137 bool wxTaskBarIcon::RemoveIcon(void)
 138 {
 139     if (!m_iconAdded)
 140         return FALSE;
 141
 142     NOTIFYICONDATA notifyData;
 143
 144     memset(&notifyData, 0, sizeof(notifyData));
 145         notifyData.cbSize = sizeof(notifyData);
 146         notifyData.hWnd = (HWND) m_hWnd;
 147         notifyData.uCallbackMessage = sm_taskbarMsg;
 148         notifyData.uFlags = NIF_MESSAGE;
 149         notifyData.hIcon = 0 ; // hIcon;
 150     notifyData.uID = 99;
 151     m_iconAdded = FALSE;
 152
 153     return (Shell_NotifyIcon(NIM_DELETE, & notifyData) != 0);
 154 }
 155
 156 bool wxTaskBarIcon::PopupMenu(wxMenu *menu) //, int x, int y);
 157 {
 158     bool        rval = FALSE;
 159     wxWindow*   win;
 160     int         x, y;
 161     wxGetMousePosition(&x, &y);
 162
 163     // is wxFrame the best window type to use???
 164     win = new wxFrame(NULL, -1, "", wxPoint(x,y), wxSize(-1,-1), 0);
 165     win->PushEventHandler(this);
 166
 167     rval = win->PopupMenu(menu, 0, 0);
 168
 169     win->PopEventHandler(FALSE);
 170     win->Destroy();
 171     return rval;
 172 }
 173
 174
 175 // Overridables
 176 void wxTaskBarIcon::OnMouseMove(wxEvent&)
 177 {
 178 }
 179
 180 void wxTaskBarIcon::OnLButtonDown(wxEvent&)
 181 {
 182 }
 183
 184 void wxTaskBarIcon::OnLButtonUp(wxEvent&)
 185 {
 186 }
 187
 188 void wxTaskBarIcon::OnRButtonDown(wxEvent&)
 189 {
 190 }
 191
 192 void wxTaskBarIcon::OnRButtonUp(wxEvent&)
 193 {
 194 }
 195
 196 void wxTaskBarIcon::OnLButtonDClick(wxEvent&)
 197 {
 198 }
 199
 200 void wxTaskBarIcon::OnRButtonDClick(wxEvent&)
 201 {
 202 }
 203
 204 void wxTaskBarIcon::_OnMouseMove(wxEvent& e)      { OnMouseMove(e);     }
 205 void wxTaskBarIcon::_OnLButtonDown(wxEvent& e)    { OnLButtonDown(e);   }
 206 void wxTaskBarIcon::_OnLButtonUp(wxEvent& e)      { OnLButtonUp(e);     }
 207 void wxTaskBarIcon::_OnRButtonDown(wxEvent& e)    { OnRButtonDown(e);   }
 208 void wxTaskBarIcon::_OnRButtonUp(wxEvent& e)      { OnRButtonUp(e);     }
 209 void wxTaskBarIcon::_OnLButtonDClick(wxEvent& e)  { OnLButtonDClick(e); }
 210 void wxTaskBarIcon::_OnRButtonDClick(wxEvent& e)  { OnRButtonDClick(e); }
 211
 212
 213 wxTaskBarIcon* wxTaskBarIcon::FindObjectForHWND(WXHWND hWnd)
 214 {
 215     wxNode*node = sm_taskBarIcons.First();
 216     while (node)
 217     {
 218         wxTaskBarIcon* obj = (wxTaskBarIcon*) node->Data();
 219         if (obj->GetHWND() == hWnd)
 220             return obj;
 221         node = node->Next();
 222     }
 223     return NULL;
 224 }
 225
 226 void wxTaskBarIcon::AddObject(wxTaskBarIcon* obj)
 227 {
 228     sm_taskBarIcons.Append(obj);
 229 }
 230
 231 void wxTaskBarIcon::RemoveObject(wxTaskBarIcon* obj)
 232 {
 233     sm_taskBarIcons.DeleteObject(obj);
 234 }
 235
 236 bool wxTaskBarIcon::RegisterWindowClass()
 237 {
 238     if (sm_registeredClass)
 239         return TRUE;
 240
 241     // Also register the taskbar message here
 242     sm_taskbarMsg = ::RegisterWindowMessage("wxTaskBarIconMessage");
 243
 244     WNDCLASS    wc;
 245     bool        rc;
 246
 247     HINSTANCE hInstance = GetModuleHandle(NULL);
 248
 249     /*
 250      * set up and register window class
 251      */
 252     wc.style = CS_HREDRAW | CS_VREDRAW;
 253     wc.lpfnWndProc = (WNDPROC) wxTaskBarIconWindowProc;
 254     wc.cbClsExtra = 0;
 255     wc.cbWndExtra = 0;
 256     wc.hInstance = hInstance;
 257     wc.hIcon = 0;
 258     wc.hCursor = 0;
 259     wc.hbrBackground = 0;
 260     wc.lpszMenuName = NULL;
 261     wc.lpszClassName = wxTaskBarWindowClass ;
 262     rc = (::RegisterClass( &wc ) != 0);
 263
 264     sm_registeredClass = (rc != 0);
 265
 266     return( (rc != 0) );
 267 }
 268
 269 WXHWND wxTaskBarIcon::CreateTaskBarWindow()
 270 {
 271     HINSTANCE hInstance = GetModuleHandle(NULL);
 272
 273     HWND hWnd = CreateWindowEx (0, wxTaskBarWindowClass,
 274             "wxTaskBarWindow",
 275             WS_OVERLAPPED,
 276             0,
 277             0,
 278             10,
 279             10,
 280             NULL,
 281             (HMENU) 0,
 282             hInstance,
 283             NULL);
 284
 285     return (WXHWND) hWnd;
 286 }
 287
 288 long wxTaskBarIcon::WindowProc( WXHWND hWnd, unsigned int msg, unsigned int wParam, long lParam )
 289 {
 290     wxEventType eventType = 0;
 291
 292     if (msg != sm_taskbarMsg)
 293         return DefWindowProc((HWND) hWnd, msg, wParam, lParam);
 294
 295     switch (lParam)
 296     {
 297         case WM_LBUTTONDOWN:
 298             eventType = wxEVT_TASKBAR_LEFT_DOWN;
 299             break;
 300
 301         case WM_LBUTTONUP:
 302             eventType = wxEVT_TASKBAR_LEFT_UP;
 303             break;
 304
 305         case WM_RBUTTONDOWN:
 306             eventType = wxEVT_TASKBAR_RIGHT_DOWN;
 307             break;
 308
 309         case WM_RBUTTONUP:
 310             eventType = wxEVT_TASKBAR_RIGHT_UP;
 311             break;
 312
 313         case WM_LBUTTONDBLCLK:
 314             eventType = wxEVT_TASKBAR_LEFT_DCLICK;
 315             break;
 316
 317         case WM_RBUTTONDBLCLK:
 318             eventType = wxEVT_TASKBAR_RIGHT_DCLICK;
 319             break;
 320
 321         case WM_MOUSEMOVE:
 322             eventType = wxEVT_TASKBAR_MOVE;
 323             break;
 324
 325         default:
 326             break;
 327         }
 328
 329     if (eventType) {
 330         wxEvent event;
 331         event.SetEventType(eventType);
 332         event.SetEventObject(this);
 333
 334         ProcessEvent(event);
 335     }
 336     return 0;
 337 }
 338
 339 LRESULT APIENTRY _EXPORT wxTaskBarIconWindowProc( HWND hWnd, unsigned msg,
 340                                      UINT wParam, LONG lParam )
 341 {
 342     wxTaskBarIcon* obj = wxTaskBarIcon::FindObjectForHWND((WXHWND) hWnd);
 343     if (obj)
 344         return obj->WindowProc((WXHWND) hWnd, msg, wParam, lParam);
 345     else
 346         return DefWindowProc(hWnd, msg, wParam, lParam);
 347 }
 348
 349 #endif
 350     // __WIN95__