Pileus Git - wmpus/blob - sys-win32.c

   1 /*
   2  * Copyright (c) 2011-2012, Andy Spencer <andy753421@gmail.com>
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  */
  15
  16 #include <stdio.h>
  17 #include <stdlib.h>
  18 #include <ctype.h>
  19 #include <search.h>
  20
  21 #define WIN32_LEAN_AND_MEAN
  22 #define _WIN32_WINNT 0x0501
  23 #include <windows.h>
  24 #include <winbase.h>
  25 #include <winuser.h>
  26
  27 #include "util.h"
  28 #include "conf.h"
  29 #include "sys.h"
  30 #include "wm.h"
  31
  32 /* Configuration */
  33 static int no_capture = 0;
  34 static int stack      = 25;
  35
  36 /* Internal structures */
  37 struct win_sys {
  38         HWND hwnd;
  39 };
  40
  41 typedef struct {
  42         event_t ev;
  43         int     vk;
  44 } event_map_t;
  45
  46 /* Global data */
  47 static int     shellhookid;
  48 static void   *cache;
  49 static win_t  *root;
  50 static list_t *screens;
  51
  52 /* Conversion functions */
  53 static event_map_t ev2vk[] = {
  54         {EV_MOUSE1  , VK_LBUTTON },
  55         {EV_MOUSE2  , VK_MBUTTON },
  56         {EV_MOUSE3  , VK_RBUTTON },
  57         {EV_LEFT    , VK_LEFT    },
  58         {EV_RIGHT   , VK_RIGHT   },
  59         {EV_UP      , VK_UP      },
  60         {EV_DOWN    , VK_DOWN    },
  61         {EV_HOME    , VK_HOME    },
  62         {EV_END     , VK_END     },
  63         {EV_PAGEUP  , VK_PRIOR   },
  64         {EV_PAGEDOWN, VK_NEXT    },
  65         {EV_F1      , VK_F1      },
  66         {EV_F2      , VK_F2      },
  67         {EV_F3      , VK_F3      },
  68         {EV_F4      , VK_F4      },
  69         {EV_F5      , VK_F5      },
  70         {EV_F6      , VK_F6      },
  71         {EV_F7      , VK_F7      },
  72         {EV_F8      , VK_F8      },
  73         {EV_F9      , VK_F9      },
  74         {EV_F10     , VK_F10     },
  75         {EV_F11     , VK_F11     },
  76         {EV_F12     , VK_F12     },
  77         {EV_SHIFT   , VK_SHIFT   },
  78         {EV_SHIFT   , VK_LSHIFT  },
  79         {EV_SHIFT   , VK_RSHIFT  },
  80         {EV_CTRL    , VK_CONTROL },
  81         {EV_CTRL    , VK_LCONTROL},
  82         {EV_CTRL    , VK_RCONTROL},
  83         {EV_ALT     , VK_MENU    },
  84         {EV_ALT     , VK_LMENU   },
  85         {EV_ALT     , VK_RMENU   },
  86         {EV_WIN     , VK_LWIN    },
  87         {EV_WIN     , VK_RWIN    },
  88 };
  89
  90 /* - Keycodes */
  91 static event_t w2ev(UINT vk)
  92 {
  93         event_map_t *em = map_getr(ev2vk,vk);
  94         return em ? em->ev : tolower(vk);
  95 }
  96
  97 static UINT ev2w(event_t ev)
  98 {
  99         event_map_t *em = map_get(ev2vk,ev);
 100         return em ? em->vk : toupper(ev);
 101 }
 102
 103 static mod_t getmod(void)
 104 {
 105         return (mod_t){
 106                 .alt   = GetKeyState(VK_MENU)    < 0,
 107                 .ctrl  = GetKeyState(VK_CONTROL) < 0,
 108                 .shift = GetKeyState(VK_SHIFT)   < 0,
 109                 .win   = GetKeyState(VK_LWIN)    < 0 ||
 110                          GetKeyState(VK_RWIN)    < 0,
 111         };
 112 }
 113
 114 /* - Pointers */
 115 static ptr_t getptr(void)
 116 {
 117         POINT wptr;
 118         GetCursorPos(&wptr);
 119         return (ptr_t){-1, -1, wptr.x, wptr.y};
 120 }
 121
 122 /* Window functions */
 123 static win_t *win_new(HWND hwnd, int checkwin)
 124 {
 125         if (checkwin) {
 126                 char winclass[256];
 127                 int exstyle = GetWindowLong(hwnd, GWL_EXSTYLE);
 128                 GetClassName(hwnd, winclass, sizeof(winclass));
 129                 if (!IsWindowVisible(hwnd))      return NULL; // Invisible stuff..
 130                 if (!strcmp("#32770", winclass)) return NULL; // Message boxes
 131                 if (GetWindow(hwnd, GW_OWNER))   return NULL; // Dialog boxes, etc
 132                 if (exstyle & WS_EX_TOOLWINDOW)  return NULL; // Floating toolbars
 133         }
 134
 135         RECT rect = {};
 136         GetWindowRect(hwnd, &rect);
 137         win_t *win = new0(win_t);
 138         win->x         = rect.left;
 139         win->y         = rect.top;
 140         win->w         = rect.right  - rect.left;
 141         win->h         = rect.bottom - rect.top;
 142         win->sys       = new0(win_sys_t);
 143         win->sys->hwnd = hwnd;
 144         printf("win_new: %p = %p (%d,%d %dx%d)\n", win, hwnd,
 145                         win->x, win->y, win->w, win->h);
 146         return win;
 147 }
 148
 149 static int win_cmp(const void *_a, const void *_b)
 150 {
 151         const win_t *a = _a, *b = _b;
 152         if (a->sys->hwnd < b->sys->hwnd) return -1;
 153         if (a->sys->hwnd > b->sys->hwnd) return  1;
 154         return 0;
 155 }
 156
 157 static win_t *win_find(HWND hwnd, int create)
 158 {
 159         if (!hwnd)
 160                 return NULL;
 161         //printf("win_find: %p, %d\n", dpy, (int)xid);
 162         win_sys_t sys = {.hwnd=hwnd};
 163         win_t     tmp = {.sys=&sys};
 164         win_t **old = NULL, *new = NULL;
 165         if ((old = tfind(&tmp, &cache, win_cmp)))
 166                 return *old;
 167         if (create && (new = win_new(hwnd,1)))
 168                 tsearch(new, &cache, win_cmp);
 169         return new;
 170 }
 171
 172 static void win_remove(win_t *win)
 173 {
 174         tdelete(win, &cache, win_cmp);
 175         free(win->sys);
 176         free(win);
 177 }
 178
 179 static win_t *win_cursor(void)
 180 {
 181         POINT wptr;
 182         GetCursorPos(&wptr);
 183         return win_find(GetAncestor(WindowFromPoint(wptr),GA_ROOT),0);
 184 }
 185
 186 static win_t *win_focused(void)
 187 {
 188         return win_find(GetForegroundWindow(),0);
 189 }
 190
 191 /* Callbacks */
 192 LRESULT CALLBACK KbdProc(int msg, WPARAM wParam, LPARAM lParam)
 193 {
 194         KBDLLHOOKSTRUCT *st = (KBDLLHOOKSTRUCT *)lParam;
 195         event_t ev = w2ev(st->vkCode);
 196         mod_t mod = getmod();
 197         mod.up = !!(st->flags & 0x80);
 198         printf("KbdProc: %d,%x,%lx - %lx,%lx,%lx - %x,%x\n",
 199                         msg, wParam, lParam,
 200                         st->vkCode, st->scanCode, st->flags,
 201                         ev, mod2int(mod));
 202         return wm_handle_event(win_focused() ?: root, ev, mod, getptr())
 203                 || CallNextHookEx(0, msg, wParam, lParam);
 204 }
 205
 206 LRESULT CALLBACK MllProc(int msg, WPARAM wParam, LPARAM lParam)
 207 {
 208         event_t ev = EV_NONE;
 209         mod_t  mod = getmod();
 210         win_t *win = win_cursor();
 211
 212         /* Update modifiers */
 213         switch (wParam) {
 214         case WM_LBUTTONDOWN: mod.up = 0; ev = EV_MOUSE1; break;
 215         case WM_LBUTTONUP:   mod.up = 1; ev = EV_MOUSE1; break;
 216         case WM_RBUTTONDOWN: mod.up = 0; ev = EV_MOUSE3; break;
 217         case WM_RBUTTONUP:   mod.up = 1; ev = EV_MOUSE3; break;
 218         }
 219
 220         /* Check for focus-in/focus-out */
 221         static win_t *old = NULL;
 222         if (win && win != old) {
 223                 wm_handle_event(old, EV_LEAVE, mod, getptr());
 224                 wm_handle_event(win, EV_ENTER, mod, getptr());
 225         }
 226         old = win;
 227
 228         /* Send mouse movement event */
 229         if (wParam == WM_MOUSEMOVE)
 230                 return wm_handle_ptr(win_cursor(), getptr());
 231         else if (ev != EV_NONE)
 232                 return wm_handle_event(win_cursor(), ev, mod, getptr());
 233         else
 234                 return CallNextHookEx(0, msg, wParam, lParam);
 235 }
 236
 237 LRESULT CALLBACK ShlProc(int msg, WPARAM wParam, LPARAM lParam)
 238 {
 239         HWND hwnd = (HWND)wParam;
 240         win_t *win = NULL;
 241         switch (msg) {
 242         case HSHELL_REDRAW:
 243         case HSHELL_WINDOWCREATED:
 244                 printf("ShlProc: %p - %s\n", hwnd, msg == HSHELL_REDRAW ?
 245                                 "redraw" : "window created");
 246                 if (!(win = win_find(hwnd,0)))
 247                         if ((win = win_find(hwnd,1)))
 248                                 wm_insert(win);
 249                 return 1;
 250         case HSHELL_WINDOWREPLACED:
 251         case HSHELL_WINDOWDESTROYED:
 252                 printf("ShlProc: %p - %s\n", hwnd, msg == HSHELL_WINDOWREPLACED ?
 253                                 "window replaced" : "window destroyed");
 254                 if ((win = win_find(hwnd,0)) &&
 255                     (win->state == ST_SHOW ||
 256                      win->state == ST_SHADE)) {
 257                         wm_remove(win);
 258                         win_remove(win);
 259                 }
 260                 return 1;
 261         case HSHELL_WINDOWACTIVATED:
 262                 printf("ShlProc: %p - window activated\n", hwnd);
 263                 // Fake button-click (causes crazy switching)
 264                 //if ((win = win_find(hwnd,0)))
 265                 //      wm_handle_event(win, EV_MOUSE1, MOD(), getptr());
 266                 return 0;
 267         default:
 268                 printf("ShlProc: %p - unknown msg, %d\n", hwnd, msg);
 269                 return 0;
 270         }
 271 }
 272
 273 LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
 274 {
 275         //printf("WndProc: %d, %x, %lx\n", msg, wParam, lParam);
 276         switch (msg) {
 277         case WM_CREATE:  printf("WndProc: %p - create\n",  hwnd); return 0;
 278         case WM_CLOSE:   printf("WndProc: %p - close\n",   hwnd); return 0;
 279         case WM_DESTROY: printf("WndProc: %p - destroy\n", hwnd); return 0;
 280         case WM_HOTKEY:  printf("WndProc: %p - hotkey\n",  hwnd); return 0;
 281         }
 282         if (msg == shellhookid)
 283                 if (ShlProc(wParam, lParam, 0))
 284                         return 1;
 285         return DefWindowProc(hwnd, msg, wParam, lParam);
 286 }
 287
 288 BOOL CALLBACK MonProc(HMONITOR mon, HDC dc, LPRECT rect, LPARAM _screens)
 289 {
 290         MONITORINFO info = {.cbSize=sizeof(MONITORINFO)};
 291         GetMonitorInfo(mon, &info);
 292         RECT *work = &info.rcWork;
 293
 294         list_t **screens = (list_t**)_screens;
 295         win_t *screen = new0(win_t);
 296         screen->x = work->left;
 297         screen->y = work->top;
 298         screen->z = !!(info.dwFlags & MONITORINFOF_PRIMARY);
 299         screen->w = work->right  - work->left;
 300         screen->h = work->bottom - work->top;
 301         *screens = list_append(*screens, screen);
 302         printf("mon_proc: %d,%d %dx%d\n",
 303                 screen->x, screen->y, screen->w, screen->h);
 304         return TRUE;
 305 }
 306
 307 BOOL CALLBACK LoopProc(HWND hwnd, LPARAM user)
 308 {
 309         win_t *win;
 310         if ((win = win_find(hwnd,1)))
 311                 wm_insert(win);
 312         return TRUE;
 313 }
 314
 315 BOOL WINAPI CtrlProc(DWORD type)
 316 {
 317         sys_exit();
 318         return TRUE;
 319 }
 320
 321 /********************
 322  * System functions *
 323  ********************/
 324 void sys_move(win_t *win, int x, int y, int w, int h)
 325 {
 326         printf("sys_move: %p - %d,%d  %dx%d\n", win, x, y, w, h);
 327         win->x = x; win->y = y;
 328         win->w = MAX(w,1); win->h = MAX(h,1);
 329         MoveWindow(win->sys->hwnd, win->x, win->y, win->w, win->h, TRUE);
 330 }
 331
 332 void sys_raise(win_t *win)
 333 {
 334         printf("sys_raise: %p\n", win);
 335
 336         /* See note in sys_focus */
 337         DWORD oldId = GetWindowThreadProcessId(GetForegroundWindow(), NULL);
 338         DWORD newId = GetCurrentThreadId();
 339         AttachThreadInput(oldId, newId, TRUE);
 340
 341         SetWindowPos(win->sys->hwnd, NULL, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE);
 342
 343         AttachThreadInput(oldId, newId, FALSE);
 344 }
 345
 346 void sys_focus(win_t *win)
 347 {
 348         printf("sys_focus: %p\n", win);
 349
 350         /* Windows prevents a thread from using SetForegroundInput under
 351          * certain circumstances and instead flashes the windows toolbar icon.
 352          * Attaching the thread input queues avoids this behavior */
 353         HWND  fgWin = GetForegroundWindow();
 354         if (fgWin == win->sys->hwnd)
 355                 return; // already focused
 356         DWORD oldId = GetWindowThreadProcessId(fgWin, NULL);
 357         DWORD newId = GetCurrentThreadId();
 358         if (oldId != newId)
 359                 AttachThreadInput(oldId, newId, TRUE);
 360
 361         HWND next = GetWindow(win->sys->hwnd, GW_HWNDNEXT);
 362         SetWindowPos(win->sys->hwnd, NULL, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE);
 363         if (next)
 364                 SetWindowPos(win->sys->hwnd, next, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE);
 365
 366         if (oldId != newId)
 367                 AttachThreadInput(oldId, newId, FALSE);
 368 }
 369
 370 void sys_show(win_t *win, state_t state)
 371 {
 372         static struct {
 373                 char *str;
 374                 int   cmd;
 375         } map[] = {
 376                 [ST_SHOW ] {"show" , SW_SHOW    },
 377                 [ST_FULL ] {"full" , SW_MAXIMIZE},
 378                 [ST_SHADE] {"shade", SW_SHOW    },
 379                 [ST_ICON ] {"icon" , SW_MINIMIZE},
 380                 [ST_HIDE ] {"hide" , SW_HIDE    },
 381         };
 382         if (win->state != state && win->state == ST_SHADE)
 383                 SetWindowRgn(win->sys->hwnd, NULL, TRUE);
 384         win->state = state;
 385         printf("sys_show: %s\n", map[state].str);
 386         ShowWindow(win->sys->hwnd, map[state].cmd);
 387         if (state == ST_SHADE)
 388                 SetWindowRgn(win->sys->hwnd, CreateRectRgn(0,0,win->w,stack), TRUE);
 389 }
 390
 391 void sys_watch(win_t *win, event_t ev, mod_t mod)
 392 {
 393         (void)ev2w; // TODO
 394         //printf("sys_watch: %p\n", win);
 395 }
 396
 397 void sys_unwatch(win_t *win, event_t ev, mod_t mod)
 398 {
 399         (void)ev2w; // TODO
 400         //printf("sys_unwatch: %p\n", win);
 401 }
 402
 403 list_t *sys_info(win_t *win)
 404 {
 405         if (screens == NULL)
 406                 EnumDisplayMonitors(NULL, NULL, MonProc, (LPARAM)&screens);
 407         return screens;
 408 }
 409
 410 win_t *sys_init(void)
 411 {
 412         HINSTANCE hInst = GetModuleHandle(NULL);
 413         HWND      hwnd  = NULL;
 414
 415         /* Load configuration */
 416         no_capture = conf_get_int("main.no-capture", no_capture);
 417         stack      = conf_get_int("main.stack",      stack);
 418
 419         /* Setup window class */
 420         WNDCLASSEX wc    = {
 421                 .cbSize        = sizeof(WNDCLASSEX),
 422                 .lpfnWndProc   = WndProc,
 423                 .hInstance     = hInst,
 424                 .lpszClassName = "wmpus_class",
 425         };
 426         if (!RegisterClassEx(&wc))
 427                 printf("sys_init: Error Registering Class - %lu\n", GetLastError());
 428
 429         /* Get work area */
 430         RECT rc;
 431         SystemParametersInfo(SPI_GETWORKAREA, 0, &rc, 0);
 432
 433         /* Create shell hook window */
 434         if (!(hwnd = CreateWindowEx(0, "wmpus_class", "wmpus", 0,
 435                         rc.left, rc.top, rc.right-rc.left, rc.bottom-rc.top,
 436                         HWND_MESSAGE, NULL, hInst, NULL)))
 437                 printf("sys_init: Error Creating Shell Hook Window - %lu\n", GetLastError());
 438
 439         /* Register shell hook */
 440         BOOL (*RegisterShellHookWindow)(HWND) = (void*)GetProcAddress(
 441                         GetModuleHandle("USER32.DLL"), "RegisterShellHookWindow");
 442         if (!RegisterShellHookWindow)
 443                 printf("sys_init: Error Finding RegisterShellHookWindow - %lu\n", GetLastError());
 444         if (!RegisterShellHookWindow(hwnd))
 445                 printf("sys_init: Error Registering ShellHook Window - %lu\n", GetLastError());
 446         shellhookid = RegisterWindowMessage("SHELLHOOK");
 447
 448         /* Input hooks */
 449         SetWindowsHookEx(WH_KEYBOARD_LL, KbdProc, hInst, 0);
 450         SetWindowsHookEx(WH_MOUSE_LL,    MllProc, hInst, 0);
 451         //SetWindowsHookEx(WH_SHELL,       ShlProc, hInst, 0);
 452
 453         /* Alternate ways to get input */
 454         //if (!RegisterHotKey(hwnd, 123, MOD_CONTROL, VK_LBUTTON))
 455         //      printf("sys_init: Error Registering Hotkey - %lu\n", GetLastError());
 456         //if (!RegisterHotKey(NULL, 123, MOD_CONTROL, VK_LBUTTON))
 457         //      printf("sys_init: Error Registering Hotkey - %lu\n", GetLastError());
 458
 459         /* Capture ctrl-c and console widnow close */
 460         SetConsoleCtrlHandler(CtrlProc, TRUE);
 461
 462         return root = win_new(hwnd,0);
 463 }
 464
 465 void sys_run(win_t *root)
 466 {
 467         MSG msg = {};
 468         if (!no_capture)
 469                 EnumWindows(LoopProc, 0);
 470         while (GetMessage(&msg, NULL, 0, 0) > 0 &&
 471                msg.message != WM_QUIT) {
 472                 TranslateMessage(&msg);
 473                 DispatchMessage(&msg);
 474         }
 475 }
 476
 477 void sys_exit(void)
 478 {
 479         PostMessage(root->sys->hwnd, WM_QUIT, 0, 0);
 480 }
 481
 482 void sys_free(win_t *root)
 483 {
 484         /* I don't really care about this
 485          * since I don't know how to use
 486          * valgrind on win32 anyway.. */
 487 }