2 * SHAppBarMessage implementation
4 * Copyright 2008 Vincent Povirk for CodeWeavers
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
20 * TODO: freedesktop _NET_WM_STRUT integration
22 * TODO: find when a fullscreen app is in the foreground and send FULLSCREENAPP
25 * TODO: detect changes in the screen size and send ABN_POSCHANGED ?
27 * TODO: multiple monitor support
32 #include "wine/unicode.h"
33 #include "wine/debug.h"
34 #include "explorer_private.h"
36 #include "wine/list.h"
38 WINE_DEFAULT_DEBUG_CHANNEL(appbar);
40 struct appbar_data_msg /* platform-independent data */
43 UINT uCallbackMessage;
53 struct appbar_data_msg abd;
56 struct appbar_response
59 struct appbar_data_msg abd;
62 static HWND appbarmsg_window = NULL;
75 static struct list appbars = LIST_INIT(appbars);
77 static struct appbar_data* get_appbar(HWND hwnd)
79 struct appbar_data* data;
81 LIST_FOR_EACH_ENTRY(data, &appbars, struct appbar_data, entry)
83 if (data->hwnd == hwnd)
90 /* send_poschanged: send ABN_POSCHANGED to every appbar except one */
91 static void send_poschanged(HWND hwnd)
93 struct appbar_data* data;
94 LIST_FOR_EACH_ENTRY(data, &appbars, struct appbar_data, entry)
96 if (data->hwnd != hwnd)
98 PostMessageW(data->hwnd, data->callback_msg, ABN_POSCHANGED, 0);
103 /* appbar_cliprect: cut out parts of the rectangle that interfere with existing appbars */
104 static void appbar_cliprect( HWND hwnd, RECT *rect )
106 struct appbar_data* data;
107 LIST_FOR_EACH_ENTRY(data, &appbars, struct appbar_data, entry)
109 if (data->hwnd == hwnd)
111 /* we only care about appbars that were added before this one */
114 if (data->space_reserved)
116 /* move in the side that corresponds to the other appbar's edge */
120 rect->bottom = min(rect->bottom, data->rc.top);
123 rect->left = max(rect->left, data->rc.right);
126 rect->right = min(rect->right, data->rc.left);
129 rect->top = max(rect->top, data->rc.bottom);
136 static UINT_PTR handle_appbarmessage(DWORD msg, struct appbar_data_msg *abd)
138 struct appbar_data* data;
139 HWND hwnd = LongToHandle( abd->hWnd );
144 if (get_appbar(hwnd))
146 /* fail when adding an hwnd the second time */
150 data = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(struct appbar_data));
153 WINE_ERR("out of memory\n");
157 data->callback_msg = abd->uCallbackMessage;
159 list_add_tail(&appbars, &data->entry);
163 if ((data = get_appbar(hwnd)))
165 list_remove(&data->entry);
167 send_poschanged(hwnd);
169 HeapFree(GetProcessHeap(), 0, data);
172 WINE_WARN("removing hwnd %p not on the list\n", hwnd);
175 if (abd->uEdge > ABE_BOTTOM)
176 WINE_WARN("invalid edge %i for %p\n", abd->uEdge, hwnd);
177 appbar_cliprect( hwnd, &abd->rc );
180 if (abd->uEdge > ABE_BOTTOM)
182 WINE_WARN("invalid edge %i for %p\n", abd->uEdge, hwnd);
185 if ((data = get_appbar(hwnd)))
187 /* calculate acceptable space */
188 appbar_cliprect( hwnd, &abd->rc );
190 if (!EqualRect(&abd->rc, &data->rc))
191 send_poschanged(hwnd);
193 /* reserve that space for this appbar */
194 data->edge = abd->uEdge;
196 data->space_reserved = TRUE;
200 WINE_WARN("app sent ABM_SETPOS message for %p without ABM_ADD\n", hwnd);
204 WINE_FIXME("SHAppBarMessage(ABM_GETSTATE): stub\n");
205 return ABS_ALWAYSONTOP | ABS_AUTOHIDE;
206 case ABM_GETTASKBARPOS:
207 WINE_FIXME("SHAppBarMessage(ABM_GETTASKBARPOS, hwnd=%p): stub\n", hwnd);
208 /* Report the taskbar is at the bottom of the screen. */
210 abd->rc.right = GetSystemMetrics(SM_CXSCREEN);
211 abd->rc.bottom = GetSystemMetrics(SM_CYSCREEN);
212 abd->rc.top = abd->rc.bottom-1;
213 abd->uEdge = ABE_BOTTOM;
217 case ABM_GETAUTOHIDEBAR:
218 WINE_FIXME("SHAppBarMessage(ABM_GETAUTOHIDEBAR, hwnd=%p, edge=%x): stub\n", hwnd, abd->uEdge);
220 case ABM_SETAUTOHIDEBAR:
221 WINE_FIXME("SHAppBarMessage(ABM_SETAUTOHIDEBAR, hwnd=%p, edge=%x, lparam=%s): stub\n",
222 hwnd, abd->uEdge, wine_dbgstr_longlong(abd->lParam));
224 case ABM_WINDOWPOSCHANGED:
227 WINE_FIXME("SHAppBarMessage(%x) unimplemented\n", msg);
232 static LRESULT CALLBACK appbar_wndproc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
239 struct appbar_cmd cmd;
244 struct appbar_response* response;
246 cds = (COPYDATASTRUCT*)lparam;
247 if (cds->cbData != sizeof(struct appbar_cmd))
249 CopyMemory(&cmd, cds->lpData, cds->cbData);
251 result = handle_appbarmessage(cds->dwData, &cmd.abd);
253 return_hproc = OpenProcess(PROCESS_DUP_HANDLE, FALSE, cmd.return_process);
254 if (return_hproc == NULL)
256 WINE_ERR("couldn't open calling process\n");
260 if (!DuplicateHandle(return_hproc, UlongToHandle(cmd.return_map),
261 GetCurrentProcess(), &return_map, 0, FALSE, DUPLICATE_SAME_ACCESS))
263 WINE_ERR("couldn't duplicate handle\n");
264 CloseHandle(return_hproc);
267 CloseHandle(return_hproc);
269 return_view = MapViewOfFile(return_map, FILE_MAP_WRITE, 0, 0, sizeof(struct appbar_response));
273 response = (struct appbar_response*)return_view;
274 response->result = result;
275 response->abd = cmd.abd;
277 UnmapViewOfFile(return_view);
280 WINE_ERR("couldn't map view of file\n");
282 CloseHandle(return_map);
289 return DefWindowProcW(hwnd, msg, wparam, lparam);
292 void initialize_appbar(void)
295 static const WCHAR classname[] = {'W','i','n','e','A','p','p','B','a','r',0};
297 /* register the appbar window class */
298 ZeroMemory(&class, sizeof(class));
299 class.cbSize = sizeof(class);
300 class.lpfnWndProc = appbar_wndproc;
301 class.hInstance = NULL;
302 class.lpszClassName = classname;
304 if (!RegisterClassExW(&class))
306 WINE_ERR("Could not register appbar message window class\n");
310 appbarmsg_window = CreateWindowW(classname, classname, 0, 0, 0, 0, 0, HWND_MESSAGE, NULL, NULL, NULL);
311 if (!appbarmsg_window)
313 WINE_ERR("Could not create appbar message window\n");