Hopefully fail to break anything in the process of syncing with trunk (r47786)
[reactos.git] / base / shell / explorer / taskbar / taskbar.cpp
1 /*
2 * Copyright 2003, 2004, 2005 Martin Fuchs
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19
20 //
21 // Explorer clone
22 //
23 // taskbar.cpp
24 //
25 // Martin Fuchs, 16.08.2003
26 //
27
28
29 #include <precomp.h>
30
31 #include "taskbar.h"
32 #include "traynotify.h" // for NOTIFYAREA_WIDTH_DEF
33
34
35 DynamicFct<BOOL (WINAPI*)(HWND hwnd)> g_SetTaskmanWindow(TEXT("user32"), "SetTaskmanWindow");
36 DynamicFct<BOOL (WINAPI*)(HWND hwnd)> g_RegisterShellHookWindow(TEXT("user32"), "RegisterShellHookWindow");
37 DynamicFct<BOOL (WINAPI*)(HWND hwnd)> g_DeregisterShellHookWindow(TEXT("user32"), "DeregisterShellHookWindow");
38
39 /*
40 DynamicFct<BOOL (WINAPI*)(HWND hWnd, DWORD dwType)> g_RegisterShellHook(TEXT("shell32"), (LPCSTR)0xb5);
41
42 // constants for RegisterShellHook()
43 #define RSH_UNREGISTER 0
44 #define RSH_REGISTER 1
45 #define RSH_REGISTER_PROGMAN 2
46 #define RSH_REGISTER_TASKMAN 3
47 */
48
49
50 TaskBarEntry::TaskBarEntry()
51 {
52 _id = 0;
53 _hbmp = 0;
54 _bmp_idx = 0;
55 _used = 0;
56 _btn_idx = 0;
57 _fsState = 0;
58 }
59
60 TaskBarMap::~TaskBarMap()
61 {
62 while(!empty()) {
63 iterator it = begin();
64 DeleteBitmap(it->second._hbmp);
65 erase(it);
66 }
67 }
68
69
70 TaskBar::TaskBar(HWND hwnd)
71 : super(hwnd),
72 WM_SHELLHOOK(RegisterWindowMessage(WINMSG_SHELLHOOK))
73 {
74 _last_btn_width = 0;
75
76 _mmMetrics_org.cbSize = sizeof(MINIMIZEDMETRICS);
77
78 SystemParametersInfo(SPI_GETMINIMIZEDMETRICS, sizeof(_mmMetrics_org), &_mmMetrics_org, 0);
79
80 // configure the window manager to hide windows when they are minimized
81 // This is neccessary to enable shell hook messages.
82 if (!(_mmMetrics_org.iArrange & ARW_HIDE)) {
83 MINIMIZEDMETRICS _mmMetrics_new = _mmMetrics_org;
84
85 _mmMetrics_new.iArrange |= ARW_HIDE;
86
87 SystemParametersInfo(SPI_SETMINIMIZEDMETRICS, sizeof(_mmMetrics_new), &_mmMetrics_new, 0);
88 }
89 }
90
91 TaskBar::~TaskBar()
92 {
93 // if (g_RegisterShellHook)
94 // (*g_RegisterShellHook)(_hwnd, RSH_UNREGISTER);
95
96 if (g_DeregisterShellHookWindow)
97 (*g_DeregisterShellHookWindow)(_hwnd);
98 else
99 KillTimer(_hwnd, 0);
100
101 if (g_SetTaskmanWindow)
102 (*g_SetTaskmanWindow)(0);
103
104 SystemParametersInfo(SPI_GETMINIMIZEDMETRICS, sizeof(_mmMetrics_org), &_mmMetrics_org, 0);
105 }
106
107 HWND TaskBar::Create(HWND hwndParent)
108 {
109 ClientRect clnt(hwndParent);
110
111 int taskbar_pos = 80; // This start position will be adjusted in DesktopBar::Resize().
112
113 return Window::Create(WINDOW_CREATOR(TaskBar), 0,
114 BtnWindowClass(CLASSNAME_TASKBAR), TITLE_TASKBAR,
115 WS_CHILD|WS_VISIBLE | CCS_TOP|CCS_NODIVIDER|CCS_NORESIZE,
116 taskbar_pos, 0, clnt.right-taskbar_pos-(NOTIFYAREA_WIDTH_DEF+1), clnt.bottom, hwndParent);
117 }
118
119 LRESULT TaskBar::Init(LPCREATESTRUCT pcs)
120 {
121 if (super::Init(pcs))
122 return 1;
123
124 /* FIXME: There's an internal padding for non-flat toolbar. Get rid of it somehow. */
125 _htoolbar = CreateToolbarEx(_hwnd,
126 WS_CHILD|WS_VISIBLE|WS_CLIPSIBLINGS|WS_CLIPCHILDREN|
127 CCS_TOP|CCS_NODIVIDER|TBSTYLE_LIST|TBSTYLE_TOOLTIPS|TBSTYLE_WRAPABLE,//|TBSTYLE_AUTOSIZE
128 IDW_TASKTOOLBAR, 0, 0, 0, NULL, 0, 0, 0, 16, 16, sizeof(TBBUTTON));
129
130 SendMessage(_htoolbar, TB_SETBUTTONWIDTH, 0, MAKELONG(TASKBUTTONWIDTH_MAX,TASKBUTTONWIDTH_MAX));
131 //SendMessage(_htoolbar, TB_SETEXTENDEDSTYLE, 0, TBSTYLE_EX_MIXEDBUTTONS);
132 //SendMessage(_htoolbar, TB_SETDRAWTEXTFLAGS, DT_CENTER|DT_VCENTER, DT_CENTER|DT_VCENTER);
133 //SetWindowFont(_htoolbar, GetStockFont(ANSI_VAR_FONT), FALSE);
134 //SendMessage(_htoolbar, TB_SETPADDING, 0, MAKELPARAM(8,8));
135
136 #ifndef __MINGW32__ // TBMETRICS missing in MinGW (as of 20.09.2005)
137 // set metrics for the Taskbar toolbar to enable button spacing
138 TBMETRICS metrics;
139
140 metrics.cbSize = sizeof(TBMETRICS);
141 metrics.dwMask = TBMF_BARPAD | TBMF_BUTTONSPACING;
142 metrics.cxBarPad = 0;
143 metrics.cyBarPad = 0;
144 metrics.cxButtonSpacing = 3;
145 metrics.cyButtonSpacing = 3;
146
147 SendMessage(_htoolbar, TB_SETMETRICS, 0, (LPARAM)&metrics);
148 #endif
149
150 _next_id = IDC_FIRST_APP;
151
152 // register the taskbar window as task manager window to make the following call to RegisterShellHookWindow working
153 if (g_SetTaskmanWindow)
154 (*g_SetTaskmanWindow)(_hwnd);
155
156 if (g_RegisterShellHookWindow) {
157 LOG(TEXT("Using shell hooks for notification of shell events."));
158
159 (*g_RegisterShellHookWindow)(_hwnd);
160 } else {
161 LOG(TEXT("Shell hooks not available."));
162
163 SetTimer(_hwnd, 0, 200, NULL);
164 }
165
166 /* Alternatively we could use the RegisterShellHook() function in SHELL32, but this is not yet implemented in the WINE code.
167 if (g_RegisterShellHook) {
168 (*g_RegisterShellHook)(0, RSH_REGISTER);
169
170 if ((HIWORD(GetVersion())>>14) == W_VER_NT)
171 (*g_RegisterShellHook)(_hwnd, RSH_REGISTER_TASKMAN);
172 else
173 (*g_RegisterShellHook)(_hwnd, RSH_REGISTER);
174 }
175 */
176 Refresh();
177
178 return 0;
179 }
180
181 LRESULT TaskBar::WndProc(UINT nmsg, WPARAM wparam, LPARAM lparam)
182 {
183 switch(nmsg) {
184 case WM_SIZE:
185 SendMessage(_htoolbar, WM_SIZE, 0, 0);
186 ResizeButtons();
187 break;
188
189 case WM_TIMER:
190 Refresh();
191 return 0;
192
193 case WM_CONTEXTMENU: {
194 Point pt(lparam);
195 ScreenToClient(_htoolbar, &pt);
196
197 if ((HWND)wparam==_htoolbar && SendMessage(_htoolbar, TB_HITTEST, 0, (LPARAM)&pt)>=0)
198 break; // avoid displaying context menu for application button _and_ desktop bar at the same time
199
200 goto def;}
201
202 case PM_GET_LAST_ACTIVE:
203 return (LRESULT)(HWND)_last_foreground_wnd;
204
205 default: def:
206 if (nmsg == WM_SHELLHOOK) {
207 switch(wparam) {
208 case HSHELL_WINDOWCREATED:
209 case HSHELL_WINDOWDESTROYED:
210 case HSHELL_WINDOWACTIVATED:
211 case HSHELL_REDRAW:
212 #ifdef HSHELL_FLASH
213 case HSHELL_FLASH:
214 #endif
215 #ifdef HSHELL_RUDEAPPACTIVATED
216 case HSHELL_RUDEAPPACTIVATED:
217 #endif
218 Refresh();
219 break;
220 }
221 } else {
222 return super::WndProc(nmsg, wparam, lparam);
223 }
224 }
225
226 return 0;
227 }
228
229 int TaskBar::Command(int id, int code)
230 {
231 TaskBarMap::iterator found = _map.find_id(id);
232
233 if (found != _map.end()) {
234 ActivateApp(found);
235 return 0;
236 }
237
238 return super::Command(id, code);
239 }
240
241 int TaskBar::Notify(int id, NMHDR* pnmh)
242 {
243 if (pnmh->hwndFrom == _htoolbar)
244 switch(pnmh->code) {
245 case NM_RCLICK: {
246 TBBUTTONINFO btninfo;
247 TaskBarMap::iterator it;
248 Point pt(GetMessagePos());
249 ScreenToClient(_htoolbar, &pt);
250
251 btninfo.cbSize = sizeof(TBBUTTONINFO);
252 btninfo.dwMask = TBIF_BYINDEX|TBIF_COMMAND;
253
254 int idx = SendMessage(_htoolbar, TB_HITTEST, 0, (LPARAM)&pt);
255
256 if (idx>=0 &&
257 SendMessage(_htoolbar, TB_GETBUTTONINFO, idx, (LPARAM)&btninfo)!=-1 &&
258 (it=_map.find_id(btninfo.idCommand))!=_map.end()) {
259 //TaskBarEntry& entry = it->second;
260
261 ActivateApp(it, false, false); // don't restore minimized windows on right button click
262
263 #ifndef __MINGW32__ // SHRestricted() missing in MinGW (as of 29.10.2003)
264 static DynamicFct<DWORD(STDAPICALLTYPE*)(RESTRICTIONS)> pSHRestricted(TEXT("SHELL32"), "SHRestricted");
265
266 if (pSHRestricted && !(*pSHRestricted)(REST_NOTRAYCONTEXTMENU))
267 #endif
268 ShowAppSystemMenu(it);
269 }
270 break;}
271
272 default:
273 return super::Notify(id, pnmh);
274 }
275
276 return 0;
277 }
278
279
280 void TaskBar::ActivateApp(TaskBarMap::iterator it, bool can_minimize, bool can_restore)
281 {
282 HWND hwnd = it->first;
283
284 bool minimize_it = can_minimize && !IsIconic(hwnd) &&
285 (hwnd==GetForegroundWindow() || hwnd==_last_foreground_wnd);
286
287 // switch to selected application window
288 if (can_restore && !minimize_it)
289 if (IsIconic(hwnd))
290 PostMessage(hwnd, WM_SYSCOMMAND, SC_RESTORE, 0);
291
292 // In case minimize_it is true, we _have_ to switch to the app before
293 // posting SW_MINIMIZE to be compatible with some applications (e.g. "Sleipnir")
294 SetForegroundWindow(hwnd);
295
296 if (minimize_it) {
297 PostMessage(hwnd, WM_SYSCOMMAND, SC_MINIMIZE, 0);
298 _last_foreground_wnd = 0;
299 } else
300 _last_foreground_wnd = hwnd;
301
302 Refresh();
303 }
304
305 void TaskBar::ShowAppSystemMenu(TaskBarMap::iterator it)
306 {
307 HMENU hmenu = GetSystemMenu(it->first, FALSE);
308
309 if (hmenu) {
310 POINT pt;
311
312 GetCursorPos(&pt);
313 int cmd = TrackPopupMenu(hmenu, TPM_LEFTBUTTON|TPM_RIGHTBUTTON|TPM_RETURNCMD, pt.x, pt.y, 0, _hwnd, NULL);
314
315 if (cmd) {
316 ActivateApp(it, false, false); // reactivate window after the context menu has closed
317 PostMessage(it->first, WM_SYSCOMMAND, cmd, 0);
318 }
319 }
320 }
321
322
323 HICON get_window_icon_small(HWND hwnd)
324 {
325 HICON hIcon = 0;
326
327 SendMessageTimeout(hwnd, WM_GETICON, ICON_SMALL2, 0, SMTO_ABORTIFHUNG, 1000, (LPDWORD)&hIcon);
328
329 if (!hIcon)
330 SendMessageTimeout(hwnd, WM_GETICON, ICON_SMALL, 0, SMTO_ABORTIFHUNG, 1000, (LPDWORD)&hIcon);
331
332 if (!hIcon)
333 SendMessageTimeout(hwnd, WM_GETICON, ICON_BIG, 0, SMTO_ABORTIFHUNG, 1000, (LPDWORD)&hIcon);
334
335 if (!hIcon)
336 hIcon = (HICON)GetClassLongPtr(hwnd, GCL_HICONSM);
337
338 if (!hIcon)
339 hIcon = (HICON)GetClassLongPtr(hwnd, GCL_HICON);
340
341 if (!hIcon)
342 SendMessageTimeout(hwnd, WM_QUERYDRAGICON, 0, 0, 0, 1000, (LPDWORD)&hIcon);
343
344 return hIcon;
345 }
346
347 HICON get_window_icon_big(HWND hwnd, bool allow_from_class)
348 {
349 HICON hIcon = 0;
350
351 SendMessageTimeout(hwnd, WM_GETICON, ICON_BIG, 0, SMTO_ABORTIFHUNG, 1000, (LPDWORD)&hIcon);
352
353 if (!hIcon)
354 SendMessageTimeout(hwnd, WM_GETICON, ICON_SMALL2, 0, SMTO_ABORTIFHUNG, 1000, (LPDWORD)&hIcon);
355
356 if (!hIcon)
357 SendMessageTimeout(hwnd, WM_GETICON, ICON_SMALL, 0, SMTO_ABORTIFHUNG, 1000, (LPDWORD)&hIcon);
358
359 if (allow_from_class) {
360 if (!hIcon)
361 hIcon = (HICON)GetClassLongPtr(hwnd, GCL_HICON);
362
363 if (!hIcon)
364 hIcon = (HICON)GetClassLongPtr(hwnd, GCL_HICONSM);
365 }
366
367 if (!hIcon)
368 SendMessageTimeout(hwnd, WM_QUERYDRAGICON, 0, 0, 0, 1000, (LPDWORD)&hIcon);
369
370 return hIcon;
371 }
372
373 // fill task bar with buttons for enumerated top level windows
374 BOOL CALLBACK TaskBar::EnumWndProc(HWND hwnd, LPARAM lparam)
375 {
376 TaskBar* pThis = (TaskBar*)lparam;
377
378 DWORD style = GetWindowStyle(hwnd);
379 DWORD ex_style = GetWindowExStyle(hwnd);
380
381 if ((style&WS_VISIBLE) && !(ex_style&WS_EX_TOOLWINDOW) &&
382 !GetParent(hwnd) && !GetWindow(hwnd,GW_OWNER)) {
383 TCHAR title[BUFFER_LEN];
384
385 if (!GetWindowText(hwnd, title, BUFFER_LEN))
386 title[0] = '\0';
387
388 TaskBarMap::iterator found = pThis->_map.find(hwnd);
389 int last_id = 0;
390
391 if (found != pThis->_map.end()) {
392 last_id = found->second._id;
393
394 if (!last_id)
395 found->second._id = pThis->_next_id++;
396 } else {
397 HBITMAP hbmp;
398 HICON hIcon = get_window_icon_small(hwnd);
399 BOOL delete_icon = FALSE;
400
401 if (!hIcon) {
402 hIcon = LoadIcon(0, IDI_APPLICATION);
403 delete_icon = TRUE;
404 }
405
406 if (hIcon) {
407 hbmp = create_bitmap_from_icon(hIcon, GetSysColorBrush(COLOR_BTNFACE), WindowCanvas(pThis->_htoolbar));
408 if (delete_icon)
409 DestroyIcon(hIcon); // some icons can be freed, some not - so ignore any error return of DestroyIcon()
410 } else
411 hbmp = 0;
412
413 TBADDBITMAP ab = {0, (UINT_PTR)hbmp};
414 int bmp_idx = SendMessage(pThis->_htoolbar, TB_ADDBITMAP, 1, (LPARAM)&ab);
415
416 TaskBarEntry entry;
417
418 entry._id = pThis->_next_id++;
419 entry._hbmp = hbmp;
420 entry._bmp_idx = bmp_idx;
421 entry._title = title;
422
423 pThis->_map[hwnd] = entry;
424 found = pThis->_map.find(hwnd);
425 }
426
427 TBBUTTON btn = {-2/*I_IMAGENONE*/, 0, TBSTATE_ENABLED/*|TBSTATE_ELLIPSES*/, BTNS_BUTTON, {0, 0}, 0, 0};
428 TaskBarEntry& entry = found->second;
429
430 ++entry._used;
431 btn.idCommand = entry._id;
432
433 HWND foreground = GetForegroundWindow();
434 HWND foreground_owner = GetWindow(foreground, GW_OWNER);
435
436 if (hwnd==foreground || hwnd==foreground_owner) {
437 btn.fsState |= TBSTATE_PRESSED|TBSTATE_CHECKED;
438 pThis->_last_foreground_wnd = hwnd;
439 }
440
441 if (!last_id) {
442 // create new toolbar buttons for new windows
443 if (title[0])
444 btn.iString = (INT_PTR)title;
445
446 btn.iBitmap = entry._bmp_idx;
447 entry._btn_idx = SendMessage(pThis->_htoolbar, TB_BUTTONCOUNT, 0, 0);
448
449 SendMessage(pThis->_htoolbar, TB_INSERTBUTTON, entry._btn_idx, (LPARAM)&btn);
450
451 pThis->ResizeButtons();
452 } else {
453 // refresh attributes of existing buttons
454 if (btn.fsState != entry._fsState)
455 SendMessage(pThis->_htoolbar, TB_SETSTATE, entry._id, MAKELONG(btn.fsState,0));
456
457 if (entry._title != title) {
458 TBBUTTONINFO info;
459
460 info.cbSize = sizeof(TBBUTTONINFO);
461 info.dwMask = TBIF_TEXT;
462 info.pszText = title;
463
464 SendMessage(pThis->_htoolbar, TB_SETBUTTONINFO, entry._id, (LPARAM)&info);
465
466 entry._title = title;
467 }
468 }
469
470 entry._fsState = btn.fsState;
471
472 #ifdef __REACTOS__ // now handled by activating the ARW_HIDE flag with SystemParametersInfo(SPI_SETMINIMIZEDMETRICS)
473 // move minimized windows out of sight
474 if (IsIconic(hwnd)) {
475 RECT rect;
476
477 GetWindowRect(hwnd, &rect);
478
479 if (rect.bottom > 0)
480 SetWindowPos(hwnd, 0, -32000, -32000, 0, 0, SWP_NOSIZE|SWP_NOZORDER|SWP_NOACTIVATE);
481 }
482 #endif
483 }
484
485 return TRUE;
486 }
487
488 void TaskBar::Refresh()
489 {
490 for(TaskBarMap::iterator it=_map.begin(); it!=_map.end(); ++it)
491 it->second._used = 0;
492
493 EnumWindows(EnumWndProc, (LPARAM)this);
494 //EnumDesktopWindows(GetThreadDesktop(GetCurrentThreadId()), EnumWndProc, (LPARAM)_htoolbar);
495
496 set<int> btn_idx_to_delete;
497 set<HBITMAP> hbmp_to_delete;
498
499 for(TaskBarMap::iterator it=_map.begin(); it!=_map.end(); ++it) {
500 TaskBarEntry& entry = it->second;
501
502 if (!entry._used && entry._id) {
503 // store button indexes to remove
504 btn_idx_to_delete.insert(entry._btn_idx);
505 hbmp_to_delete.insert(entry._hbmp);
506 entry._id = 0;
507 }
508 }
509
510 if (!btn_idx_to_delete.empty()) {
511 // remove buttons from right to left
512 for(set<int>::reverse_iterator it=btn_idx_to_delete.rbegin(); it!=btn_idx_to_delete.rend(); ++it) {
513 int idx = *it;
514
515 SendMessage(_htoolbar, TB_DELETEBUTTON, idx, 0);
516
517 for(TaskBarMap::iterator it=_map.begin(); it!=_map.end(); ++it) {
518 TaskBarEntry& entry = it->second;
519
520 // adjust button indexes
521 if (entry._btn_idx > idx) {
522 --entry._btn_idx;
523 --entry._bmp_idx;
524
525 TBBUTTONINFO info;
526
527 info.cbSize = sizeof(TBBUTTONINFO);
528 info.dwMask = TBIF_IMAGE;
529 info.iImage = entry._bmp_idx;
530
531 SendMessage(_htoolbar, TB_SETBUTTONINFO, entry._id, (LPARAM)&info);
532 }
533 }
534 }
535
536 for(set<HBITMAP>::iterator it=hbmp_to_delete.begin(); it!=hbmp_to_delete.end(); ++it) {
537 HBITMAP hbmp = *it;
538
539 TBREPLACEBITMAP tbrepl = {0, (UINT_PTR)hbmp, 0, 0};
540 SendMessage(_htoolbar, TB_REPLACEBITMAP, 0, (LPARAM)&tbrepl);
541
542 DeleteObject(hbmp);
543
544 for(TaskBarMap::iterator it=_map.begin(); it!=_map.end(); ++it)
545 if (it->second._hbmp == hbmp) {
546 _map.erase(it);
547 break;
548 }
549 }
550
551 ResizeButtons();
552 }
553 }
554
555 TaskBarMap::iterator TaskBarMap::find_id(int id)
556 {
557 for(iterator it=begin(); it!=end(); ++it)
558 if (it->second._id == id)
559 return it;
560
561 return end();
562 }
563
564 void TaskBar::ResizeButtons()
565 {
566 int btns = _map.size();
567
568 if (btns > 0) {
569 int bar_width = ClientRect(_hwnd).right;
570 int btn_width = (bar_width / btns) - 3;
571
572 if (btn_width < TASKBUTTONWIDTH_MIN)
573 btn_width = TASKBUTTONWIDTH_MIN;
574 else if (btn_width > TASKBUTTONWIDTH_MAX)
575 btn_width = TASKBUTTONWIDTH_MAX;
576
577 if (btn_width != _last_btn_width) {
578 _last_btn_width = btn_width;
579
580 SendMessage(_htoolbar, TB_SETBUTTONWIDTH, 0, MAKELONG(btn_width,btn_width));
581 SendMessage(_htoolbar, TB_AUTOSIZE, 0, 0);
582 }
583 }
584 }