src/video/x11/SDL_x11events.c
author Sam Lantinga <slouken@libsdl.org>
Thu, 27 Jul 2006 06:53:23 +0000
changeset 1951 7177581dc9fa
child 2046 da8332c8f480
permissions -rw-r--r--
Initial work on X11 window code in.
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2006 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#include "SDL_syswm.h"
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#include "SDL_x11video.h"
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#include "../../events/SDL_events_c.h"
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static void
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X11_DispatchEvent(_THIS)
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{
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    SDL_VideoData *videodata = (SDL_VideoData *) _this->driverdata;
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    SDL_WindowData *data;
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    XEvent xevent;
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    int i;
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    SDL_zero(xevent);           /* valgrind fix. --ryan. */
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    XNextEvent(videodata->display, &xevent);
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    /* Send a SDL_SYSWMEVENT if the application wants them */
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    if (SDL_ProcessEvents[SDL_SYSWMEVENT] == SDL_ENABLE) {
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        SDL_SysWMmsg wmmsg;
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        SDL_VERSION(&wmmsg.version);
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        wmmsg.subsystem = SDL_SYSWM_X11;
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        wmmsg.event.xevent = xevent;
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        SDL_SendSysWMEvent(&wmmsg);
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    }
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    data = NULL;
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    for (i = 0; i < videodata->numwindows; ++i) {
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        if (videodata->windowlist[i]->window == xevent.xany.window) {
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            data = videodata->windowlist[i];
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        }
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    }
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    if (!data) {
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        return;
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    }
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    switch (xevent.type) {
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        /* Gaining mouse coverage? */
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    case EnterNotify:{
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#ifdef DEBUG_XEVENTS
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            printf("EnterNotify! (%d,%d)\n", xevent.xcrossing.x,
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                   xevent.xcrossing.y);
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            if (xevent.xcrossing.mode == NotifyGrab)
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                printf("Mode: NotifyGrab\n");
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            if (xevent.xcrossing.mode == NotifyUngrab)
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                printf("Mode: NotifyUngrab\n");
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#endif
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            if ((xevent.xcrossing.mode != NotifyGrab) &&
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                (xevent.xcrossing.mode != NotifyUngrab)) {
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                SDL_SetMouseFocus(videodata->mouse, data->windowID);
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                SDL_SendMouseMotion(videodata->mouse, 0, xevent.xcrossing.x,
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                                    xevent.xcrossing.y);
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            }
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        }
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        break;
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        /* Losing mouse coverage? */
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    case LeaveNotify:{
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#ifdef DEBUG_XEVENTS
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            printf("LeaveNotify! (%d,%d)\n", xevent.xcrossing.x,
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                   xevent.xcrossing.y);
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            if (xevent.xcrossing.mode == NotifyGrab)
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                printf("Mode: NotifyGrab\n");
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            if (xevent.xcrossing.mode == NotifyUngrab)
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                printf("Mode: NotifyUngrab\n");
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#endif
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            if ((xevent.xcrossing.mode != NotifyGrab) &&
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                (xevent.xcrossing.mode != NotifyUngrab) &&
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                (xevent.xcrossing.detail != NotifyInferior)) {
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                SDL_SendMouseMotion(videodata->mouse, 0,
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                                    xevent.xcrossing.x, xevent.xcrossing.y);
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                SDL_SetMouseFocus(videodata->mouse, 0);
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            }
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        }
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        break;
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        /* Gaining input focus? */
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    case FocusIn:{
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#ifdef DEBUG_XEVENTS
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            printf("FocusIn!\n");
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#endif
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            SDL_SetKeyboardFocus(videodata->keyboard, data->windowID);
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#ifdef X_HAVE_UTF8_STRING
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            if (data->ic) {
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                XSetICFocus(data->ic);
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            }
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#endif
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        }
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        break;
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        /* Losing input focus? */
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    case FocusOut:{
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#ifdef DEBUG_XEVENTS
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            printf("FocusOut!\n");
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#endif
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            SDL_SetKeyboardFocus(videodata->keyboard, 0);
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#ifdef X_HAVE_UTF8_STRING
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            if (data->ic) {
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                XUnsetICFocus(data->ic);
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            }
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#endif
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        }
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        break;
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        /* Generated upon EnterWindow and FocusIn */
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    case KeymapNotify:{
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#ifdef DEBUG_XEVENTS
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            printf("KeymapNotify!\n");
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#endif
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            /* FIXME:
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               X11_SetKeyboardState(SDL_Display, xevent.xkeymap.key_vector);
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             */
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        }
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        break;
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        /* Mouse motion? */
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    case MotionNotify:{
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#ifdef DEBUG_MOTION
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            printf("X11 motion: %d,%d\n", xevent.xmotion.x, xevent.xmotion.y);
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#endif
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            SDL_SendMouseMotion(videodata->mouse, 0, xevent.xmotion.x,
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                                xevent.xmotion.y);
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        }
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        break;
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        /* Mouse button press? */
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    case ButtonPress:{
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            SDL_SendMouseButton(videodata->mouse, SDL_PRESSED,
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                                xevent.xbutton.button);
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        }
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        break;
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        /* Mouse button release? */
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    case ButtonRelease:{
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            SDL_SendMouseButton(videodata->mouse, SDL_RELEASED,
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                                xevent.xbutton.button);
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        }
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        break;
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        /* Key press? */
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    case KeyPress:{
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#if 0                           /* FIXME */
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            static SDL_keysym saved_keysym;
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            SDL_keysym keysym;
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            KeyCode keycode = xevent.xkey.keycode;
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#ifdef DEBUG_XEVENTS
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            printf("KeyPress (X11 keycode = 0x%X)\n", xevent.xkey.keycode);
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#endif
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            /* Get the translated SDL virtual keysym */
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            if (keycode) {
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                keysym.scancode = keycode;
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                keysym.sym = X11_TranslateKeycode(SDL_Display, keycode);
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                keysym.mod = KMOD_NONE;
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                keysym.unicode = 0;
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            } else {
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                keysym = saved_keysym;
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            }
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            /* If we're not doing translation, we're done! */
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            if (!SDL_TranslateUNICODE) {
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                posted = SDL_PrivateKeyboard(SDL_PRESSED, &keysym);
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                break;
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            }
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            if (XFilterEvent(&xevent, None)) {
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                if (xevent.xkey.keycode) {
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                    posted = SDL_PrivateKeyboard(SDL_PRESSED, &keysym);
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                } else {
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                    /* Save event to be associated with IM text
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                       In 1.3 we'll have a text event instead.. */
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                    saved_keysym = keysym;
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                }
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                break;
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            }
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            /* Look up the translated value for the key event */
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#ifdef X_HAVE_UTF8_STRING
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            if (data->ic != NULL) {
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                static Status state;
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                /* A UTF-8 character can be at most 6 bytes */
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                char keybuf[6];
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                if (Xutf8LookupString(data->ic, &xevent.xkey,
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                                      keybuf, sizeof(keybuf), NULL, &state)) {
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                    keysym.unicode = Utf8ToUcs4((Uint8 *) keybuf);
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                }
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            } else
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#endif
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            {
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                static XComposeStatus state;
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                char keybuf[32];
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                if (XLookupString(&xevent.xkey,
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                                  keybuf, sizeof(keybuf), NULL, &state)) {
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                    /*
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                     * FIXME: XLookupString() may yield more than one
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                     * character, so we need a mechanism to allow for
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                     * this (perhaps null keypress events with a
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                     * unicode value)
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                     */
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                    keysym.unicode = (Uint8) keybuf[0];
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                }
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            }
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            posted = SDL_PrivateKeyboard(SDL_PRESSED, &keysym);
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#endif // 0
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        }
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        break;
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        /* Key release? */
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    case KeyRelease:{
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#if 0                           /* FIXME */
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            SDL_keysym keysym;
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            KeyCode keycode = xevent.xkey.keycode;
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#ifdef DEBUG_XEVENTS
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            printf("KeyRelease (X11 keycode = 0x%X)\n", xevent.xkey.keycode);
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#endif
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            /* Check to see if this is a repeated key */
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            if (X11_KeyRepeat(SDL_Display, &xevent)) {
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                break;
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            }
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            /* Get the translated SDL virtual keysym */
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            keysym.scancode = keycode;
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            keysym.sym = X11_TranslateKeycode(SDL_Display, keycode);
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            keysym.mod = KMOD_NONE;
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            keysym.unicode = 0;
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            posted = SDL_PrivateKeyboard(SDL_RELEASED, &keysym);
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#endif // 0
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        }
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        break;
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        /* Have we been iconified? */
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    case UnmapNotify:{
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#ifdef DEBUG_XEVENTS
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            printf("UnmapNotify!\n");
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#endif
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            SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_HIDDEN, 0, 0);
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            SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_MINIMIZED, 0,
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                                0);
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        }
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        break;
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        /* Have we been restored? */
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    case MapNotify:{
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#ifdef DEBUG_XEVENTS
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            printf("MapNotify!\n");
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#endif
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            SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_SHOWN, 0, 0);
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            SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_RESTORED, 0,
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                                0);
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        }
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        break;
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        /* Have we been resized or moved? */
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    case ConfigureNotify:{
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#ifdef DEBUG_XEVENTS
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            printf("ConfigureNotify! (resize: %dx%d)\n",
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                   xevent.xconfigure.width, xevent.xconfigure.height);
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#endif
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            SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_MOVED,
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                                xevent.xconfigure.x, xevent.xconfigure.y);
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            SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_RESIZED,
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                                xevent.xconfigure.width,
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                                xevent.xconfigure.height);
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        }
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        break;
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        /* Have we been requested to quit (or another client message?) */
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    case ClientMessage:{
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            if ((xevent.xclient.format == 32) &&
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                (xevent.xclient.data.l[0] == videodata->WM_DELETE_WINDOW)) {
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                SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_CLOSE, 0,
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                                    0);
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            }
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        }
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        break;
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        /* Do we need to refresh ourselves? */
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    case Expose:{
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#ifdef DEBUG_XEVENTS
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            printf("Expose (count = %d)\n", xevent.xexpose.count);
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#endif
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            SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_EXPOSED, 0,
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                                0);
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        }
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        break;
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    default:{
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#ifdef DEBUG_XEVENTS
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            printf("Unhandled event %d\n", xevent.type);
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#endif
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        }
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        break;
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    }
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}
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/* Ack!  XPending() actually performs a blocking read if no events available */
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int
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X11_Pending(Display * display)
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{
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    /* Flush the display connection and look to see if events are queued */
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    XFlush(display);
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    if (XEventsQueued(display, QueuedAlready)) {
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        return (1);
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    }
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    /* More drastic measures are required -- see if X is ready to talk */
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    {
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        static struct timeval zero_time;        /* static == 0 */
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        int x11_fd;
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        fd_set fdset;
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        x11_fd = ConnectionNumber(display);
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        FD_ZERO(&fdset);
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        FD_SET(x11_fd, &fdset);
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        if (select(x11_fd + 1, &fdset, NULL, NULL, &zero_time) == 1) {
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            return (XPending(display));
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        }
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    }
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    /* Oh well, nothing is ready .. */
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    return (0);
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   350
}
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void
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X11_PumpEvents(_THIS)
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{
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    SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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    /* Keep processing pending events */
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    while (X11_Pending(data->display)) {
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        X11_DispatchEvent(_this);
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    }
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}
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void
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X11_SaveScreenSaver(Display * display, int *saved_timeout, BOOL * dpms)
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{
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    int timeout, interval, prefer_blank, allow_exp;
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    XGetScreenSaver(display, &timeout, &interval, &prefer_blank, &allow_exp);
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    *saved_timeout = timeout;
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   369
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#if SDL_VIDEO_DRIVER_X11_DPMS
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    if (SDL_X11_HAVE_DPMS) {
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        int dummy;
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        if (DPMSQueryExtension(display, &dummy, &dummy)) {
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            CARD16 state;
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            DPMSInfo(display, &state, dpms);
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        }
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    }
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#else
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    *dpms = 0;
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#endif /* SDL_VIDEO_DRIVER_X11_DPMS */
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   381
}
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   382
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void
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   384
X11_DisableScreenSaver(Display * display)
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   385
{
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   386
    int timeout, interval, prefer_blank, allow_exp;
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   387
    XGetScreenSaver(display, &timeout, &interval, &prefer_blank, &allow_exp);
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   388
    timeout = 0;
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   389
    XSetScreenSaver(display, timeout, interval, prefer_blank, allow_exp);
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   390
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   391
#if SDL_VIDEO_DRIVER_X11_DPMS
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   392
    if (SDL_X11_HAVE_DPMS) {
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   393
        int dummy;
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   394
        if (DPMSQueryExtension(display, &dummy, &dummy)) {
slouken@1951
   395
            DPMSDisable(display);
slouken@1951
   396
        }
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   397
    }
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   398
#endif /* SDL_VIDEO_DRIVER_X11_DPMS */
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   399
}
slouken@1951
   400
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   401
void
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   402
X11_RestoreScreenSaver(Display * display, int saved_timeout, BOOL dpms)
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   403
{
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   404
    int timeout, interval, prefer_blank, allow_exp;
slouken@1951
   405
    XGetScreenSaver(display, &timeout, &interval, &prefer_blank, &allow_exp);
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   406
    timeout = saved_timeout;
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   407
    XSetScreenSaver(display, timeout, interval, prefer_blank, allow_exp);
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   408
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   409
#if SDL_VIDEO_DRIVER_X11_DPMS
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   410
    if (SDL_X11_HAVE_DPMS) {
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   411
        int dummy;
slouken@1951
   412
        if (DPMSQueryExtension(display, &dummy, &dummy)) {
slouken@1951
   413
            if (dpms) {
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   414
                DPMSEnable(display);
slouken@1951
   415
            }
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   416
        }
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   417
    }
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   418
#endif /* SDL_VIDEO_DRIVER_X11_DPMS */
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   419
}
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   420
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   421
/* vi: set ts=4 sw=4 expandtab: */