source/gbase/window.cpp

   1 /* $Id$
   2
   3 This file is part of libmspgbase
   4 Copyright © 2007-2008  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include <vector>
   9 #ifndef WIN32
  10 #include <X11/Xatom.h>
  11 #include <X11/Xutil.h>
  12 #ifdef WITH_XF86VIDMODE
  13 #include <X11/extensions/xf86vmode.h>
  14 #endif
  15 #else
  16 #include <windowsx.h>
  17 #endif
  18 #include <msp/core/application.h>
  19 #include <msp/core/except.h>
  20 #include "display.h"
  21 #include "window.h"
  22 #include "display_priv.h"
  23
  24 using namespace std;
  25
  26 namespace {
  27
  28 #ifdef WIN32
  29 LRESULT CALLBACK wndproc_(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
  30 {
  31         if(msg==WM_CREATE)
  32         {
  33                 CREATESTRUCT *cs=reinterpret_cast<CREATESTRUCT *>(lparam);
  34                 SetWindowLong(hwnd, 0, reinterpret_cast<LONG>(cs->lpCreateParams));
  35         }
  36         else
  37         {
  38                 Msp::Graphics::Window *wnd=reinterpret_cast<Msp::Graphics::Window *>(GetWindowLong(hwnd, 0));
  39                 Msp::Graphics::Window::Event ev;
  40                 ev.msg=msg;
  41                 ev.wparam=wparam;
  42                 ev.lparam=lparam;
  43                 if(wnd && wnd->event(ev))
  44                         return 0;
  45         }
  46
  47         return DefWindowProc(hwnd, msg, wparam, lparam);
  48 }
  49 #else
  50 Bool match_event_type(Display *, XEvent *event, XPointer arg)
  51 {
  52         return event->type==reinterpret_cast<int>(arg);
  53 }
  54 #endif
  55
  56 }
  57
  58 namespace Msp {
  59 namespace Graphics {
  60
  61 WindowOptions::WindowOptions():
  62         width(640),
  63         height(480),
  64         fullscreen(false),
  65         resizable(false)
  66 { }
  67
  68
  69 Window::Window(Display &dpy, unsigned w, unsigned h, bool fs):
  70         display(dpy)
  71 {
  72         options.width=w;
  73         options.height=h;
  74         options.fullscreen=fs;
  75
  76         init();
  77 }
  78
  79 Window::Window(Display &dpy, const WindowOptions &opts):
  80         display(dpy),
  81         options(opts)
  82 {
  83         init();
  84 }
  85
  86 void Window::init()
  87 {
  88         visible=false;
  89         kbd_autorepeat=true;
  90         resizing=false;
  91         priv=new Private;
  92
  93 #ifdef WIN32
  94         static bool wndclass_created=false;
  95
  96         if(!wndclass_created)
  97         {
  98                 WNDCLASSEX wndcl;
  99
 100                 wndcl.cbSize=sizeof(WNDCLASSEX);
 101                 wndcl.style=0;
 102                 wndcl.lpfnWndProc=&wndproc_;
 103                 wndcl.cbClsExtra=0;
 104                 wndcl.cbWndExtra=sizeof(Window *);
 105                 wndcl.hInstance=reinterpret_cast<HINSTANCE>(Application::get_data());
 106                 wndcl.hIcon=0;
 107                 wndcl.hCursor=LoadCursor(0, IDC_ARROW);
 108                 wndcl.hbrBackground=0;
 109                 wndcl.lpszMenuName=0;
 110                 wndcl.lpszClassName="mspgbase";
 111                 wndcl.hIconSm=0;
 112
 113                 if(!RegisterClassEx(&wndcl))
 114                         throw Exception("Couldn't register window class");
 115
 116                 wndclass_created=true;
 117         }
 118
 119         RECT rect;
 120         SetRect(&rect, 0, 0, options.width, options.height);
 121
 122         int style=(options.fullscreen ? WS_POPUP : WS_OVERLAPPEDWINDOW);
 123         if(!options.resizable)
 124                 style&=~WS_THICKFRAME;
 125         int exstyle=(options.fullscreen ? WS_EX_APPWINDOW : WS_EX_OVERLAPPEDWINDOW);
 126         AdjustWindowRectEx(&rect, style, false, exstyle);
 127
 128         priv->window=CreateWindowEx(exstyle,
 129                 "mspgbase",
 130                 "Window",
 131                 style,
 132                 CW_USEDEFAULT, CW_USEDEFAULT,
 133                 rect.right-rect.left, rect.bottom-rect.top,
 134                 0,
 135                 0,
 136                 reinterpret_cast<HINSTANCE>(Application::get_data()),
 137                 this);
 138         if(!priv->window)
 139                 throw Exception("CreateWindowEx failed");
 140
 141 #else
 142         ::Display *dpy=display.get_private().display;
 143
 144         priv->wm_delete_window=XInternAtom(dpy, "WM_DELETE_WINDOW", true);
 145         priv->invisible_cursor=0;
 146
 147         XSetWindowAttributes attr;
 148         attr.override_redirect=options.fullscreen;
 149         attr.event_mask=ButtonPressMask|ButtonReleaseMask|PointerMotionMask|KeyPressMask|KeyReleaseMask|StructureNotifyMask|EnterWindowMask;
 150
 151         priv->window=XCreateWindow(dpy,
 152                 DefaultRootWindow(dpy),
 153                 0, 0,
 154                 options.width, options.height,
 155                 0,
 156                 CopyFromParent,
 157                 InputOutput,
 158                 CopyFromParent,
 159                 CWOverrideRedirect|CWEventMask, &attr);
 160
 161         XSetWMProtocols(dpy, priv->window, &priv->wm_delete_window, 1);
 162
 163         if(!options.resizable)
 164         {
 165                 XSizeHints hints;
 166                 hints.flags=PMinSize|PMaxSize;
 167                 hints.min_width=hints.max_width=options.width;
 168                 hints.min_height=hints.max_height=options.height;
 169                 XSetWMNormalHints(dpy, priv->window, &hints);
 170         }
 171
 172 #endif
 173
 174         display.add_window(*this);
 175         display.check_error();
 176 }
 177
 178 Window::~Window()
 179 {
 180         if(priv->window)
 181 #ifdef WIN32
 182                 CloseWindow(priv->window);
 183 #else
 184                 XDestroyWindow(display.get_private().display, priv->window);
 185
 186         if(priv->invisible_cursor)
 187                 XFreeCursor(display.get_private().display, priv->invisible_cursor);
 188 #endif
 189
 190         display.remove_window(*this);
 191
 192         if(options.fullscreen)
 193                 display.restore_mode();
 194
 195         delete priv;
 196 }
 197
 198 void Window::set_title(const string &title)
 199 {
 200 #ifdef WIN32
 201         SetWindowText(priv->window, title.c_str());
 202 #else
 203         vector<unsigned char> buf(title.begin(), title.end());
 204         XTextProperty prop;
 205         prop.value=&buf[0];
 206         prop.encoding=XA_STRING;
 207         prop.format=8;
 208         prop.nitems=title.size();
 209         XSetWMName(display.get_private().display, priv->window, &prop);
 210         display.check_error();
 211 #endif
 212 }
 213
 214 void Window::reconfigure(const WindowOptions &opts)
 215 {
 216         bool fullscreen_changed=(opts.fullscreen!=options.fullscreen);
 217         resizing=(opts.width!=options.width || opts.height!=options.height);
 218
 219         options=opts;
 220
 221 #ifdef WIN32
 222         RECT rect;
 223         SetRect(&rect, 0, 0, options.width, options.height);
 224
 225         int style=(options.fullscreen ? WS_POPUP : WS_OVERLAPPEDWINDOW);
 226         if(!options.resizable)
 227                 style&=~WS_THICKFRAME;
 228         int exstyle=(options.fullscreen ? WS_EX_APPWINDOW : WS_EX_OVERLAPPEDWINDOW);
 229         AdjustWindowRectEx(&rect, style, false, exstyle);
 230
 231         if(fullscreen_changed)
 232         {
 233                 hide();
 234                 SetWindowLong(priv->window, GWL_EXSTYLE, exstyle);
 235                 SetWindowLong(priv->window, GWL_STYLE, style);
 236                 show();
 237         }
 238
 239         if(options.fullscreen)
 240                 SetWindowPos(priv->window, 0, 0, 0, rect.right-rect.left, rect.bottom-rect.top, SWP_NOZORDER);
 241         else
 242                 SetWindowPos(priv->window, 0, 0, 0, rect.right-rect.left, rect.bottom-rect.top, SWP_NOMOVE|SWP_NOZORDER);
 243 #else
 244         ::Display *dpy=display.get_private().display;
 245
 246         bool was_visible=visible;
 247         if(fullscreen_changed)
 248         {
 249                 if(was_visible)
 250                 {
 251                         hide();
 252
 253                         // Wait for the window to be unmapped.  This makes window managers happy.
 254                         XEvent ev;
 255                         XPeekIfEvent(dpy, &ev, match_event_type, reinterpret_cast<XPointer>(UnmapNotify));
 256                 }
 257
 258                 XSetWindowAttributes attr;
 259                 attr.override_redirect=options.fullscreen;
 260                 XChangeWindowAttributes(dpy, priv->window, CWOverrideRedirect, &attr);
 261         }
 262
 263         XSizeHints hints;
 264         if(options.resizable)
 265                 hints.flags=0;
 266         else
 267         {
 268                 hints.flags=PMinSize|PMaxSize;
 269                 hints.min_width=hints.max_width=options.width;
 270                 hints.min_height=hints.max_height=options.height;
 271         }
 272         XSetWMNormalHints(dpy, priv->window, &hints);
 273
 274         if(options.fullscreen)
 275                 XMoveResizeWindow(dpy, priv->window, 0, 0, options.width, options.height);
 276         else
 277                 XResizeWindow(dpy, priv->window, options.width, options.height);
 278
 279         if(fullscreen_changed)
 280         {
 281                 if(was_visible)
 282                         show();
 283         }
 284 #endif
 285
 286         if(visible)
 287         {
 288                 if(options.fullscreen)
 289                         display.set_mode(VideoMode(options.width, options.height));
 290                 else if(fullscreen_changed)
 291                         display.restore_mode();
 292         }
 293 }
 294
 295 void Window::set_keyboard_autorepeat(bool r)
 296 {
 297         kbd_autorepeat=r;
 298 }
 299
 300 void Window::show_cursor(bool s)
 301 {
 302 #ifdef WIN32
 303         ShowCursor(s);
 304 #else
 305         ::Display *dpy=display.get_private().display;
 306
 307         if(s)
 308                 XUndefineCursor(dpy, priv->window);
 309         else
 310         {
 311                 if(!priv->invisible_cursor)
 312                 {
 313                         int screen=DefaultScreen(dpy);
 314
 315                         Pixmap pm=XCreatePixmap(dpy, priv->window, 1, 1, 1);
 316                         GC gc=XCreateGC(dpy, pm, 0, 0);
 317                         XSetFunction(dpy, gc, GXclear);
 318                         XDrawPoint(dpy, pm, gc, 0, 0);
 319                         XFreeGC(dpy, gc);
 320
 321                         XColor black;
 322                         black.pixel=BlackPixel(dpy, screen);
 323                         XQueryColor(dpy, DefaultColormap(dpy, screen), &black);
 324
 325                         priv->invisible_cursor=XCreatePixmapCursor(dpy, pm, pm, &black, &black, 0, 0);
 326
 327                         XFreePixmap(dpy, pm);
 328                 }
 329                 XDefineCursor(dpy, priv->window, priv->invisible_cursor);
 330         }
 331 #endif
 332 }
 333
 334 void Window::warp_pointer(int x, int y)
 335 {
 336 #ifndef WIN32
 337         XWarpPointer(display.get_private().display, None, priv->window, 0, 0, 0, 0, x, y);
 338 #else
 339         (void)x;
 340         (void)y;
 341 #endif
 342 }
 343
 344 void Window::show()
 345 {
 346 #ifdef WIN32
 347         ShowWindow(priv->window, SW_SHOWNORMAL);
 348 #else
 349         XMapRaised(display.get_private().display, priv->window);
 350 #endif
 351         visible=true;
 352
 353         if(options.fullscreen)
 354         {
 355                 display.set_mode(VideoMode(options.width, options.height));
 356 #ifndef WIN32
 357                 XWarpPointer(display.get_private().display, None, priv->window, 0, 0, 0, 0, options.width/2, options.height/2);
 358 #endif
 359         }
 360 }
 361
 362 void Window::hide()
 363 {
 364 #ifdef WIN32
 365         ShowWindow(priv->window, SW_HIDE);
 366 #else
 367         XUnmapWindow(display.get_private().display, priv->window);
 368 #endif
 369         visible=false;
 370
 371         if(options.fullscreen)
 372                 display.restore_mode();
 373 }
 374
 375 bool Window::event(const Event &evnt)
 376 {
 377 #ifdef WIN32
 378         WPARAM wp=evnt.wparam;
 379         LPARAM lp=evnt.lparam;
 380         switch(evnt.msg)
 381         {
 382         case WM_KEYDOWN:
 383                 signal_key_press.emit(wp, 0, wp);
 384                 break;
 385         case WM_KEYUP:
 386                 signal_key_release.emit(wp, 0);
 387                 break;
 388         case WM_LBUTTONDOWN:
 389                 signal_button_press.emit(GET_X_LPARAM(lp), GET_Y_LPARAM(lp), 1, 0);
 390                 break;
 391         case WM_LBUTTONUP:
 392                 signal_button_release.emit(GET_X_LPARAM(lp), GET_Y_LPARAM(lp), 1, 0);
 393                 break;
 394         case WM_MBUTTONDOWN:
 395                 signal_button_press.emit(GET_X_LPARAM(lp), GET_Y_LPARAM(lp), 2, 0);
 396                 break;
 397         case WM_MBUTTONUP:
 398                 signal_button_release.emit(GET_X_LPARAM(lp), GET_Y_LPARAM(lp), 2, 0);
 399                 break;
 400         case WM_RBUTTONDOWN:
 401                 signal_button_press.emit(GET_X_LPARAM(lp), GET_Y_LPARAM(lp), 3, 0);
 402                 break;
 403         case WM_RBUTTONUP:
 404                 signal_button_release.emit(GET_X_LPARAM(lp), GET_Y_LPARAM(lp), 3, 0);
 405                 break;
 406         case WM_MOUSEWHEEL:
 407                 {
 408                         unsigned btn = (HIWORD(wp)&0x8000) ? 5 : 4;
 409                         signal_button_press.emit(GET_X_LPARAM(lp), GET_Y_LPARAM(lp), btn, 0);
 410                         signal_button_release.emit(GET_X_LPARAM(lp), GET_Y_LPARAM(lp), btn, 0);
 411                 }
 412                 break;
 413         case WM_MOUSEMOVE:
 414                 signal_pointer_motion.emit(GET_X_LPARAM(lp), GET_Y_LPARAM(lp));
 415                 break;
 416         case WM_SIZE:
 417                 options.width=LOWORD(lp);
 418                 options.height=HIWORD(lp);
 419                 signal_resize.emit(options.width, options.height);
 420                 break;
 421         case WM_CLOSE:
 422                 signal_close.emit();
 423                 break;
 424         default:
 425                 return false;
 426         }
 427 #else
 428         const XEvent &ev=evnt.xevent;
 429         switch(ev.type)
 430         {
 431         case ButtonPress:
 432                 signal_button_press.emit(ev.xbutton.x, ev.xbutton.y, ev.xbutton.button, ev.xbutton.state);
 433                 break;
 434         case ButtonRelease:
 435                 signal_button_release.emit(ev.xbutton.x, ev.xbutton.y, ev.xbutton.button, ev.xbutton.state);
 436                 break;
 437         case MotionNotify:
 438                 signal_pointer_motion.emit(ev.xmotion.x, ev.xmotion.y);
 439                 break;
 440         case KeyPress:
 441                 {
 442                         char buf[16];
 443                         XLookupString(const_cast<XKeyEvent *>(&ev.xkey), buf, sizeof(buf), 0, 0);
 444                         // XXX Handle the result according to locale
 445                         signal_key_press.emit(XKeycodeToKeysym(display.get_private().display, ev.xkey.keycode, 0), ev.xkey.state, buf[0]);
 446                 }
 447                 break;
 448         case KeyRelease:
 449                 signal_key_release.emit(XKeycodeToKeysym(display.get_private().display, ev.xkey.keycode, 0), ev.xkey.state);
 450                 break;
 451         case ConfigureNotify:
 452                 if((ev.xconfigure.width==static_cast<int>(options.width) && ev.xconfigure.height==static_cast<int>(options.height)) == resizing)
 453                 {
 454                         options.width=ev.xconfigure.width;
 455                         options.height=ev.xconfigure.height;
 456                         resizing=false;
 457                         signal_resize.emit(options.width, options.height);
 458                 }
 459 #ifdef WITH_XF86VIDMODE
 460                 if(options.fullscreen)
 461                 {
 462                         ::Display *dpy=display.get_private().display;
 463                         int screen=DefaultScreen(dpy);
 464                         XF86VidModeSetViewPort(dpy, screen, ev.xconfigure.x, ev.xconfigure.y);
 465                 }
 466 #endif
 467                 break;
 468         case ClientMessage:
 469                 if(ev.xclient.data.l[0]==static_cast<long>(priv->wm_delete_window))
 470                         signal_close.emit();
 471                 break;
 472         case EnterNotify:
 473                 if(options.fullscreen)
 474                         XSetInputFocus(display.get_private().display, priv->window, RevertToParent, CurrentTime);
 475                 break;
 476         case MapNotify:
 477                 if(options.fullscreen)
 478                         XGrabPointer(display.get_private().display, priv->window, true, None, GrabModeAsync, GrabModeAsync, priv->window, None, CurrentTime);
 479                 break;
 480         default:
 481                 return false;
 482         }
 483 #endif
 484         return true;
 485 }
 486
 487 } // namespace Graphics
 488 } // namespace Msp