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1 | ///////////////////////////////////////////////////////////////////////// | |
2 | // File: src/msw/taskbar.cpp | |
3 | // Purpose: Implements wxTaskBarIcon class for manipulating icons on | |
4 | // the Windows task bar. | |
5 | // Author: Julian Smart | |
6 | // Modified by: Vaclav Slavik | |
7 | // Created: 24/3/98 | |
8 | // RCS-ID: $Id$ | |
9 | // Copyright: (c) | |
10 | // Licence: wxWindows licence | |
11 | ///////////////////////////////////////////////////////////////////////// | |
12 | ||
13 | // For compilers that support precompilation, includes "wx.h". | |
14 | #include "wx/wxprec.h" | |
15 | ||
16 | #ifdef __BORLANDC__ | |
17 | #pragma hdrstop | |
18 | #endif | |
19 | ||
20 | #ifndef WX_PRECOMP | |
21 | #include "wx/window.h" | |
22 | #include "wx/frame.h" | |
23 | #include "wx/utils.h" | |
24 | #include "wx/menu.h" | |
25 | #endif | |
26 | ||
27 | #include "wx/msw/private.h" | |
28 | #include "wx/msw/winundef.h" | |
29 | ||
30 | #include <string.h> | |
31 | #include "wx/taskbar.h" | |
32 | ||
33 | #ifdef __WXWINCE__ | |
34 | #include <winreg.h> | |
35 | #include <shellapi.h> | |
36 | #endif | |
37 | ||
38 | // initialized on demand | |
39 | UINT gs_msgTaskbar = 0; | |
40 | UINT gs_msgRestartTaskbar = 0; | |
41 | ||
42 | ||
43 | IMPLEMENT_DYNAMIC_CLASS(wxTaskBarIcon, wxEvtHandler) | |
44 | ||
45 | // ============================================================================ | |
46 | // implementation | |
47 | // ============================================================================ | |
48 | ||
49 | // ---------------------------------------------------------------------------- | |
50 | // wxTaskBarIconWindow: helper window | |
51 | // ---------------------------------------------------------------------------- | |
52 | ||
53 | // NB: this class serves two purposes: | |
54 | // 1. win32 needs a HWND associated with taskbar icon, this provides it | |
55 | // 2. we need wxTopLevelWindow so that the app doesn't exit when | |
56 | // last frame is closed but there still is a taskbar icon | |
57 | class wxTaskBarIconWindow : public wxFrame | |
58 | { | |
59 | public: | |
60 | wxTaskBarIconWindow(wxTaskBarIcon *icon) | |
61 | : wxFrame(NULL, wxID_ANY, wxEmptyString, wxDefaultPosition, wxDefaultSize, 0), | |
62 | m_icon(icon) | |
63 | { | |
64 | } | |
65 | ||
66 | WXLRESULT MSWWindowProc(WXUINT msg, | |
67 | WXWPARAM wParam, WXLPARAM lParam) | |
68 | { | |
69 | if (msg == gs_msgRestartTaskbar || msg == gs_msgTaskbar) | |
70 | { | |
71 | return m_icon->WindowProc(msg, wParam, lParam); | |
72 | } | |
73 | else | |
74 | { | |
75 | return wxFrame::MSWWindowProc(msg, wParam, lParam); | |
76 | } | |
77 | } | |
78 | ||
79 | private: | |
80 | wxTaskBarIcon *m_icon; | |
81 | }; | |
82 | ||
83 | ||
84 | // ---------------------------------------------------------------------------- | |
85 | // NotifyIconData: wrapper around NOTIFYICONDATA | |
86 | // ---------------------------------------------------------------------------- | |
87 | ||
88 | struct NotifyIconData : public NOTIFYICONDATA | |
89 | { | |
90 | NotifyIconData(WXHWND hwnd) | |
91 | { | |
92 | memset(this, 0, sizeof(NOTIFYICONDATA)); | |
93 | cbSize = sizeof(NOTIFYICONDATA); | |
94 | hWnd = (HWND) hwnd; | |
95 | uCallbackMessage = gs_msgTaskbar; | |
96 | uFlags = NIF_MESSAGE; | |
97 | ||
98 | // we use the same id for all taskbar icons as we don't need it to | |
99 | // distinguish between them | |
100 | uID = 99; | |
101 | } | |
102 | }; | |
103 | ||
104 | // ---------------------------------------------------------------------------- | |
105 | // wxTaskBarIcon | |
106 | // ---------------------------------------------------------------------------- | |
107 | ||
108 | wxTaskBarIcon::wxTaskBarIcon() | |
109 | { | |
110 | m_win = NULL; | |
111 | m_iconAdded = false; | |
112 | RegisterWindowMessages(); | |
113 | } | |
114 | ||
115 | wxTaskBarIcon::~wxTaskBarIcon() | |
116 | { | |
117 | if (m_iconAdded) | |
118 | RemoveIcon(); | |
119 | ||
120 | if (m_win) | |
121 | m_win->Destroy(); | |
122 | } | |
123 | ||
124 | // Operations | |
125 | bool wxTaskBarIcon::SetIcon(const wxIcon& icon, const wxString& tooltip) | |
126 | { | |
127 | // NB: we have to create the window lazily because of backward compatibility, | |
128 | // old applications may create a wxTaskBarIcon instance before wxApp | |
129 | // is initialized (as samples/taskbar used to do) | |
130 | if (!m_win) | |
131 | { | |
132 | m_win = new wxTaskBarIconWindow(this); | |
133 | } | |
134 | ||
135 | m_icon = icon; | |
136 | m_strTooltip = tooltip; | |
137 | ||
138 | NotifyIconData notifyData(GetHwndOf(m_win)); | |
139 | ||
140 | if (icon.Ok()) | |
141 | { | |
142 | notifyData.uFlags |= NIF_ICON; | |
143 | notifyData.hIcon = GetHiconOf(icon); | |
144 | } | |
145 | ||
146 | if ( !tooltip.empty() ) | |
147 | { | |
148 | notifyData.uFlags |= NIF_TIP; | |
149 | // lstrcpyn(notifyData.szTip, tooltip.c_str(), WXSIZEOF(notifyData.szTip)); | |
150 | wxStrncpy(notifyData.szTip, tooltip.c_str(), WXSIZEOF(notifyData.szTip)); | |
151 | } | |
152 | ||
153 | bool ok = Shell_NotifyIcon(m_iconAdded ? NIM_MODIFY | |
154 | : NIM_ADD, ¬ifyData) != 0; | |
155 | ||
156 | if ( !m_iconAdded && ok ) | |
157 | m_iconAdded = true; | |
158 | ||
159 | return ok; | |
160 | } | |
161 | ||
162 | bool wxTaskBarIcon::RemoveIcon() | |
163 | { | |
164 | if (!m_iconAdded) | |
165 | return false; | |
166 | ||
167 | m_iconAdded = false; | |
168 | ||
169 | NotifyIconData notifyData(GetHwndOf(m_win)); | |
170 | ||
171 | return Shell_NotifyIcon(NIM_DELETE, ¬ifyData) != 0; | |
172 | } | |
173 | ||
174 | #if wxUSE_MENUS | |
175 | bool wxTaskBarIcon::PopupMenu(wxMenu *menu) | |
176 | { | |
177 | wxASSERT_MSG( m_win != NULL, _T("taskbar icon not initialized") ); | |
178 | ||
179 | static bool s_inPopup = false; | |
180 | ||
181 | if (s_inPopup) | |
182 | return false; | |
183 | ||
184 | s_inPopup = true; | |
185 | ||
186 | int x, y; | |
187 | wxGetMousePosition(&x, &y); | |
188 | ||
189 | m_win->Move(x, y); | |
190 | ||
191 | m_win->PushEventHandler(this); | |
192 | ||
193 | menu->UpdateUI(); | |
194 | ||
195 | // the SetForegroundWindow() and PostMessage() calls are needed to work | |
196 | // around Win32 bug with the popup menus shown for the notifications as | |
197 | // documented at http://support.microsoft.com/kb/q135788/ | |
198 | ::SetForegroundWindow(GetHwndOf(m_win)); | |
199 | ||
200 | bool rval = m_win->PopupMenu(menu, 0, 0); | |
201 | ||
202 | ::PostMessage(GetHwndOf(m_win), WM_NULL, 0, 0L); | |
203 | ||
204 | m_win->PopEventHandler(false); | |
205 | ||
206 | s_inPopup = false; | |
207 | ||
208 | return rval; | |
209 | } | |
210 | #endif // wxUSE_MENUS | |
211 | ||
212 | void wxTaskBarIcon::RegisterWindowMessages() | |
213 | { | |
214 | static bool s_registered = false; | |
215 | ||
216 | if ( !s_registered ) | |
217 | { | |
218 | // Taskbar restart msg will be sent to us if the icon needs to be redrawn | |
219 | gs_msgRestartTaskbar = RegisterWindowMessage(wxT("TaskbarCreated")); | |
220 | ||
221 | // Also register the taskbar message here | |
222 | gs_msgTaskbar = ::RegisterWindowMessage(wxT("wxTaskBarIconMessage")); | |
223 | ||
224 | s_registered = true; | |
225 | } | |
226 | } | |
227 | ||
228 | // ---------------------------------------------------------------------------- | |
229 | // wxTaskBarIcon window proc | |
230 | // ---------------------------------------------------------------------------- | |
231 | ||
232 | long wxTaskBarIcon::WindowProc(unsigned int msg, | |
233 | unsigned int WXUNUSED(wParam), | |
234 | long lParam) | |
235 | { | |
236 | wxEventType eventType = 0; | |
237 | ||
238 | if (msg == gs_msgRestartTaskbar) // does the icon need to be redrawn? | |
239 | { | |
240 | m_iconAdded = false; | |
241 | SetIcon(m_icon, m_strTooltip); | |
242 | } | |
243 | ||
244 | // this function should only be called for gs_msg(Restart)Taskbar messages | |
245 | wxASSERT(msg == gs_msgTaskbar); | |
246 | ||
247 | switch (lParam) | |
248 | { | |
249 | case WM_LBUTTONDOWN: | |
250 | eventType = wxEVT_TASKBAR_LEFT_DOWN; | |
251 | break; | |
252 | ||
253 | case WM_LBUTTONUP: | |
254 | eventType = wxEVT_TASKBAR_LEFT_UP; | |
255 | break; | |
256 | ||
257 | case WM_RBUTTONDOWN: | |
258 | eventType = wxEVT_TASKBAR_RIGHT_DOWN; | |
259 | break; | |
260 | ||
261 | case WM_RBUTTONUP: | |
262 | eventType = wxEVT_TASKBAR_RIGHT_UP; | |
263 | break; | |
264 | ||
265 | case WM_LBUTTONDBLCLK: | |
266 | eventType = wxEVT_TASKBAR_LEFT_DCLICK; | |
267 | break; | |
268 | ||
269 | case WM_RBUTTONDBLCLK: | |
270 | eventType = wxEVT_TASKBAR_RIGHT_DCLICK; | |
271 | break; | |
272 | ||
273 | case WM_MOUSEMOVE: | |
274 | eventType = wxEVT_TASKBAR_MOVE; | |
275 | break; | |
276 | ||
277 | default: | |
278 | break; | |
279 | } | |
280 | ||
281 | if (eventType) | |
282 | { | |
283 | wxTaskBarIconEvent event(eventType, this); | |
284 | ||
285 | ProcessEvent(event); | |
286 | } | |
287 | ||
288 | return 0; | |
289 | } |