diff options
Diffstat (limited to 'distrib/sdl-1.2.15/src/video/x11/SDL_x11events.c')
| -rw-r--r-- | distrib/sdl-1.2.15/src/video/x11/SDL_x11events.c | 1414 |
1 files changed, 1414 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/src/video/x11/SDL_x11events.c b/distrib/sdl-1.2.15/src/video/x11/SDL_x11events.c new file mode 100644 index 0000000..559a001 --- /dev/null +++ b/distrib/sdl-1.2.15/src/video/x11/SDL_x11events.c @@ -0,0 +1,1414 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2012 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + Sam Lantinga + slouken@libsdl.org +*/ +#include "SDL_config.h" + +/* Handle the event stream, converting X11 events into SDL events */ + +#include <setjmp.h> +#include <X11/Xlib.h> +#include <X11/Xutil.h> +#include <X11/keysym.h> +#ifdef __SVR4 +#include <X11/Sunkeysym.h> +#endif +#include <sys/types.h> +#include <sys/time.h> +#include <unistd.h> + +#include "SDL_timer.h" +#include "SDL_syswm.h" +#include "../SDL_sysvideo.h" +#include "../../events/SDL_sysevents.h" +#include "../../events/SDL_events_c.h" +#include "SDL_x11video.h" +#include "SDL_x11dga_c.h" +#include "SDL_x11modes_c.h" +#include "SDL_x11image_c.h" +#include "SDL_x11gamma_c.h" +#include "SDL_x11wm_c.h" +#include "SDL_x11mouse_c.h" +#include "SDL_x11events_c.h" + + +/* Define this if you want to debug X11 events */ +/*#define DEBUG_XEVENTS*/ + +/* The translation tables from an X11 keysym to a SDL keysym */ +static SDLKey ODD_keymap[256]; +static SDLKey MISC_keymap[256]; +SDLKey X11_TranslateKeycode(Display *display, KeyCode kc); + +/* + Pending resize target for ConfigureNotify (so outdated events don't + cause inappropriate resize events) +*/ +int X11_PendingConfigureNotifyWidth = -1; +int X11_PendingConfigureNotifyHeight = -1; + +#ifdef X_HAVE_UTF8_STRING +Uint32 Utf8ToUcs4(const Uint8 *utf8) +{ + Uint32 c; + int i = 1; + int noOctets = 0; + int firstOctetMask = 0; + unsigned char firstOctet = utf8[0]; + if (firstOctet < 0x80) { + /* + Characters in the range: + 00000000 to 01111111 (ASCII Range) + are stored in one octet: + 0xxxxxxx (The same as its ASCII representation) + The least 6 significant bits of the first octet is the most 6 significant nonzero bits + of the UCS4 representation. + */ + noOctets = 1; + firstOctetMask = 0x7F; /* 0(1111111) - The most significant bit is ignored */ + } else if ((firstOctet & 0xE0) /* get the most 3 significant bits by AND'ing with 11100000 */ + == 0xC0 ) { /* see if those 3 bits are 110. If so, the char is in this range */ + /* + Characters in the range: + 00000000 10000000 to 00000111 11111111 + are stored in two octets: + 110xxxxx 10xxxxxx + The least 5 significant bits of the first octet is the most 5 significant nonzero bits + of the UCS4 representation. + */ + noOctets = 2; + firstOctetMask = 0x1F; /* 000(11111) - The most 3 significant bits are ignored */ + } else if ((firstOctet & 0xF0) /* get the most 4 significant bits by AND'ing with 11110000 */ + == 0xE0) { /* see if those 4 bits are 1110. If so, the char is in this range */ + /* + Characters in the range: + 00001000 00000000 to 11111111 11111111 + are stored in three octets: + 1110xxxx 10xxxxxx 10xxxxxx + The least 4 significant bits of the first octet is the most 4 significant nonzero bits + of the UCS4 representation. + */ + noOctets = 3; + firstOctetMask = 0x0F; /* 0000(1111) - The most 4 significant bits are ignored */ + } else if ((firstOctet & 0xF8) /* get the most 5 significant bits by AND'ing with 11111000 */ + == 0xF0) { /* see if those 5 bits are 11110. If so, the char is in this range */ + /* + Characters in the range: + 00000001 00000000 00000000 to 00011111 11111111 11111111 + are stored in four octets: + 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx + The least 3 significant bits of the first octet is the most 3 significant nonzero bits + of the UCS4 representation. + */ + noOctets = 4; + firstOctetMask = 0x07; /* 11110(111) - The most 5 significant bits are ignored */ + } else if ((firstOctet & 0xFC) /* get the most 6 significant bits by AND'ing with 11111100 */ + == 0xF8) { /* see if those 6 bits are 111110. If so, the char is in this range */ + /* + Characters in the range: + 00000000 00100000 00000000 00000000 to + 00000011 11111111 11111111 11111111 + are stored in five octets: + 111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx + The least 2 significant bits of the first octet is the most 2 significant nonzero bits + of the UCS4 representation. + */ + noOctets = 5; + firstOctetMask = 0x03; /* 111110(11) - The most 6 significant bits are ignored */ + } else if ((firstOctet & 0xFE) /* get the most 7 significant bits by AND'ing with 11111110 */ + == 0xFC) { /* see if those 7 bits are 1111110. If so, the char is in this range */ + /* + Characters in the range: + 00000100 00000000 00000000 00000000 to + 01111111 11111111 11111111 11111111 + are stored in six octets: + 1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx + The least significant bit of the first octet is the most significant nonzero bit + of the UCS4 representation. + */ + noOctets = 6; + firstOctetMask = 0x01; /* 1111110(1) - The most 7 significant bits are ignored */ + } else + return 0; /* The given chunk is not a valid UTF-8 encoded Unicode character */ + + /* + The least noOctets significant bits of the first octet is the most 2 significant nonzero bits + of the UCS4 representation. + The first 6 bits of the UCS4 representation is the least 8-noOctets-1 significant bits of + firstOctet if the character is not ASCII. If so, it's the least 7 significant bits of firstOctet. + This done by AND'ing firstOctet with its mask to trim the bits used for identifying the + number of continuing octets (if any) and leave only the free bits (the x's) + Sample: + 1-octet: 0xxxxxxx & 01111111 = 0xxxxxxx + 2-octets: 110xxxxx & 00011111 = 000xxxxx + */ + c = firstOctet & firstOctetMask; + + /* Now, start filling c.ucs4 with the bits from the continuing octets from utf8. */ + for (i = 1; i < noOctets; i++) { + /* A valid continuing octet is of the form 10xxxxxx */ + if ((utf8[i] & 0xC0) /* get the most 2 significant bits by AND'ing with 11000000 */ + != 0x80) /* see if those 2 bits are 10. If not, the is a malformed sequence. */ + /*The given chunk is a partial sequence at the end of a string that could + begin a valid character */ + return 0; + + /* Make room for the next 6-bits */ + c <<= 6; + + /* + Take only the least 6 significance bits of the current octet (utf8[i]) and fill the created room + of c.ucs4 with them. + This done by AND'ing utf8[i] with 00111111 and the OR'ing the result with c.ucs4. + */ + c |= utf8[i] & 0x3F; + } + return c; +} + +/* Given a UTF-8 encoded string pointed to by utf8 of length length in + bytes, returns the corresponding UTF-16 encoded string in the + buffer pointed to by utf16. The maximum number of UTF-16 encoding + units (i.e., Unit16s) allowed in the buffer is specified in + utf16_max_length. The return value is the number of UTF-16 + encoding units placed in the output buffer pointed to by utf16. + + In case of an error, -1 is returned, leaving some unusable partial + results in the output buffer. + + The caller must estimate the size of utf16 buffer by itself before + calling this function. Insufficient output buffer is considered as + an error, and once an error occured, this function doesn't give any + clue how large the result will be. + + The error cases include following: + + - Invalid byte sequences were in the input UTF-8 bytes. The caller + has no way to know what point in the input buffer was the + errornous byte. + + - The input contained a character (a valid UTF-8 byte sequence) + whose scalar value exceeded the range that UTF-16 can represent + (i.e., characters whose Unicode scalar value above 0x110000). + + - The output buffer has no enough space to hold entire utf16 data. + + Please note: + + - '\0'-termination is not assumed both on the input UTF-8 string + and on the output UTF-16 string; any legal zero byte in the input + UTF-8 string will be converted to a 16-bit zero in output. As a + side effect, the last UTF-16 encoding unit stored in the output + buffer will have a non-zero value if the input UTF-8 was not + '\0'-terminated. + + - UTF-8 aliases are *not* considered as an error. They are + converted to UTF-16. For example, 0xC0 0xA0, 0xE0 0x80 0xA0, + and 0xF0 0x80 0x80 0xA0 are all mapped to a single UTF-16 + encoding unit 0x0020. + + - Three byte UTF-8 sequences whose value corresponds to a surrogate + code or other reserved scalar value are not considered as an + error either. They may cause an invalid UTF-16 data (e.g., those + containing unpaired surrogates). + +*/ + +static int Utf8ToUtf16(const Uint8 *utf8, const int utf8_length, Uint16 *utf16, const int utf16_max_length) { + + /* p moves over the output buffer. max_ptr points to the next to the last slot of the buffer. */ + Uint16 *p = utf16; + Uint16 const *const max_ptr = utf16 + utf16_max_length; + + /* end_of_input points to the last byte of input as opposed to the next to the last byte. */ + Uint8 const *const end_of_input = utf8 + utf8_length - 1; + + while (utf8 <= end_of_input) { + Uint8 const c = *utf8; + if (p >= max_ptr) { + /* No more output space. */ + return -1; + } + if (c < 0x80) { + /* One byte ASCII. */ + *p++ = c; + utf8 += 1; + } else if (c < 0xC0) { + /* Follower byte without preceeding leader bytes. */ + return -1; + } else if (c < 0xE0) { + /* Two byte sequence. We need one follower byte. */ + if (end_of_input - utf8 < 1 || (((utf8[1] ^ 0x80)) & 0xC0)) { + return -1; + } + *p++ = (Uint16)(0xCF80 + (c << 6) + utf8[1]); + utf8 += 2; + } else if (c < 0xF0) { + /* Three byte sequence. We need two follower byte. */ + if (end_of_input - utf8 < 2 || (((utf8[1] ^ 0x80) | (utf8[2] ^ 0x80)) & 0xC0)) { + return -1; + } + *p++ = (Uint16)(0xDF80 + (c << 12) + (utf8[1] << 6) + utf8[2]); + utf8 += 3; + } else if (c < 0xF8) { + int plane; + /* Four byte sequence. We need three follower bytes. */ + if (end_of_input - utf8 < 3 || (((utf8[1] ^ 0x80) | (utf8[2] ^0x80) | (utf8[3] ^ 0x80)) & 0xC0)) { + return -1; + } + plane = (-0xC8 + (c << 2) + (utf8[1] >> 4)); + if (plane == 0) { + /* This four byte sequence is an alias that + corresponds to a Unicode scalar value in BMP. + It fits in an UTF-16 encoding unit. */ + *p++ = (Uint16)(0xDF80 + (utf8[1] << 12) + (utf8[2] << 6) + utf8[3]); + } else if (plane <= 16) { + /* This is a legal four byte sequence that corresponds to a surrogate pair. */ + if (p + 1 >= max_ptr) { + /* No enough space on the output buffer for the pair. */ + return -1; + } + *p++ = (Uint16)(0xE5B8 + (c << 8) + (utf8[1] << 2) + (utf8[2] >> 4)); + *p++ = (Uint16)(0xDB80 + ((utf8[2] & 0x0F) << 6) + utf8[3]); + } else { + /* This four byte sequence is out of UTF-16 code space. */ + return -1; + } + utf8 += 4; + } else { + /* Longer sequence or unused byte. */ + return -1; + } + } + return p - utf16; +} + +#endif + +/* Check to see if this is a repeated key. + (idea shamelessly lifted from GII -- thanks guys! :) + */ +static int X11_KeyRepeat(Display *display, XEvent *event) +{ + XEvent peekevent; + int repeated; + + repeated = 0; + if ( XPending(display) ) { + XPeekEvent(display, &peekevent); + if ( (peekevent.type == KeyPress) && + (peekevent.xkey.keycode == event->xkey.keycode) && + ((peekevent.xkey.time-event->xkey.time) < 2) ) { + repeated = 1; + XNextEvent(display, &peekevent); + } + } + return(repeated); +} + +/* Note: The X server buffers and accumulates mouse motion events, so + the motion event generated by the warp may not appear exactly as we + expect it to. We work around this (and improve performance) by only + warping the pointer when it reaches the edge, and then wait for it. +*/ +#define MOUSE_FUDGE_FACTOR 8 + +static __inline__ int X11_WarpedMotion(_THIS, XEvent *xevent) +{ + int w, h, i; + int deltax, deltay; + int posted; + + w = SDL_VideoSurface->w; + h = SDL_VideoSurface->h; + deltax = xevent->xmotion.x - mouse_last.x; + deltay = xevent->xmotion.y - mouse_last.y; +#ifdef DEBUG_MOTION + printf("Warped mouse motion: %d,%d\n", deltax, deltay); +#endif + mouse_last.x = xevent->xmotion.x; + mouse_last.y = xevent->xmotion.y; + posted = SDL_PrivateMouseMotion(0, 1, deltax, deltay); + + if ( (xevent->xmotion.x < MOUSE_FUDGE_FACTOR) || + (xevent->xmotion.x > (w-MOUSE_FUDGE_FACTOR)) || + (xevent->xmotion.y < MOUSE_FUDGE_FACTOR) || + (xevent->xmotion.y > (h-MOUSE_FUDGE_FACTOR)) ) { + /* Get the events that have accumulated */ + while ( XCheckTypedEvent(SDL_Display, MotionNotify, xevent) ) { + deltax = xevent->xmotion.x - mouse_last.x; + deltay = xevent->xmotion.y - mouse_last.y; +#ifdef DEBUG_MOTION + printf("Extra mouse motion: %d,%d\n", deltax, deltay); +#endif + mouse_last.x = xevent->xmotion.x; + mouse_last.y = xevent->xmotion.y; + posted += SDL_PrivateMouseMotion(0, 1, deltax, deltay); + } + mouse_last.x = w/2; + mouse_last.y = h/2; + XWarpPointer(SDL_Display, None, SDL_Window, 0, 0, 0, 0, + mouse_last.x, mouse_last.y); + for ( i=0; i<10; ++i ) { + XMaskEvent(SDL_Display, PointerMotionMask, xevent); + if ( (xevent->xmotion.x > + (mouse_last.x-MOUSE_FUDGE_FACTOR)) && + (xevent->xmotion.x < + (mouse_last.x+MOUSE_FUDGE_FACTOR)) && + (xevent->xmotion.y > + (mouse_last.y-MOUSE_FUDGE_FACTOR)) && + (xevent->xmotion.y < + (mouse_last.y+MOUSE_FUDGE_FACTOR)) ) { + break; + } +#ifdef DEBUG_XEVENTS + printf("Lost mouse motion: %d,%d\n", xevent->xmotion.x, xevent->xmotion.y); +#endif + } +#ifdef DEBUG_XEVENTS + if ( i == 10 ) { + printf("Warning: didn't detect mouse warp motion\n"); + } +#endif + } + return(posted); +} + +static int X11_DispatchEvent(_THIS) +{ + int posted; + XEvent xevent; + + SDL_memset(&xevent, '\0', sizeof (XEvent)); /* valgrind fix. --ryan. */ + XNextEvent(SDL_Display, &xevent); + + /* Discard KeyRelease and KeyPress events generated by auto-repeat. + We need to do it before passing event to XFilterEvent. Otherwise, + KeyRelease aware IMs are confused... */ + if ( xevent.type == KeyRelease + && X11_KeyRepeat(SDL_Display, &xevent) ) { + return 0; + } + +#ifdef X_HAVE_UTF8_STRING + /* If we are translating with IM, we need to pass all events + to XFilterEvent, and discard those filtered events immediately. */ + if ( SDL_TranslateUNICODE + && SDL_IM != NULL + && XFilterEvent(&xevent, None) ) { + return 0; + } +#endif + + posted = 0; + switch (xevent.type) { + + /* Gaining mouse coverage? */ + case EnterNotify: { +#ifdef DEBUG_XEVENTS +printf("EnterNotify! (%d,%d)\n", xevent.xcrossing.x, xevent.xcrossing.y); +if ( xevent.xcrossing.mode == NotifyGrab ) +printf("Mode: NotifyGrab\n"); +if ( xevent.xcrossing.mode == NotifyUngrab ) +printf("Mode: NotifyUngrab\n"); +#endif + if ( this->input_grab == SDL_GRAB_OFF ) { + posted = SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS); + } + posted = SDL_PrivateMouseMotion(0, 0, + xevent.xcrossing.x, + xevent.xcrossing.y); + } + break; + + /* Losing mouse coverage? */ + case LeaveNotify: { +#ifdef DEBUG_XEVENTS +printf("LeaveNotify! (%d,%d)\n", xevent.xcrossing.x, xevent.xcrossing.y); +if ( xevent.xcrossing.mode == NotifyGrab ) +printf("Mode: NotifyGrab\n"); +if ( xevent.xcrossing.mode == NotifyUngrab ) +printf("Mode: NotifyUngrab\n"); +#endif + if ( (xevent.xcrossing.mode != NotifyGrab) && + (xevent.xcrossing.mode != NotifyUngrab) && + (xevent.xcrossing.detail != NotifyInferior) ) { + if ( this->input_grab == SDL_GRAB_OFF ) { + posted = SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS); + } else { + posted = SDL_PrivateMouseMotion(0, 0, + xevent.xcrossing.x, + xevent.xcrossing.y); + } + } + } + break; + + /* Gaining input focus? */ + case FocusIn: { +#ifdef DEBUG_XEVENTS +printf("FocusIn!\n"); +#endif + posted = SDL_PrivateAppActive(1, SDL_APPINPUTFOCUS); + +#ifdef X_HAVE_UTF8_STRING + if ( SDL_IC != NULL ) { + XSetICFocus(SDL_IC); + } +#endif + /* Queue entry into fullscreen mode */ + switch_waiting = 0x01 | SDL_FULLSCREEN; + switch_time = SDL_GetTicks() + 1500; + } + break; + + /* Losing input focus? */ + case FocusOut: { +#ifdef DEBUG_XEVENTS +printf("FocusOut!\n"); +#endif + posted = SDL_PrivateAppActive(0, SDL_APPINPUTFOCUS); + +#ifdef X_HAVE_UTF8_STRING + if ( SDL_IC != NULL ) { + XUnsetICFocus(SDL_IC); + } +#endif + /* Queue leaving fullscreen mode */ + switch_waiting = 0x01; + switch_time = SDL_GetTicks() + 200; + } + break; + +#ifdef X_HAVE_UTF8_STRING + /* Some IM requires MappingNotify to be passed to + XRefreshKeyboardMapping by the app. */ + case MappingNotify: { + XRefreshKeyboardMapping(&xevent.xmapping); + } + break; +#endif /* X_HAVE_UTF8_STRING */ + + /* Generated upon EnterWindow and FocusIn */ + case KeymapNotify: { +#ifdef DEBUG_XEVENTS +printf("KeymapNotify!\n"); +#endif + X11_SetKeyboardState(SDL_Display, xevent.xkeymap.key_vector); + } + break; + + /* Mouse motion? */ + case MotionNotify: { + if ( SDL_VideoSurface ) { + if ( mouse_relative ) { + if ( using_dga & DGA_MOUSE ) { +#ifdef DEBUG_MOTION + printf("DGA motion: %d,%d\n", xevent.xmotion.x_root, xevent.xmotion.y_root); +#endif + posted = SDL_PrivateMouseMotion(0, 1, + xevent.xmotion.x_root, + xevent.xmotion.y_root); + } else { + posted = X11_WarpedMotion(this,&xevent); + } + } else { +#ifdef DEBUG_MOTION + printf("X11 motion: %d,%d\n", xevent.xmotion.x, xevent.xmotion.y); +#endif + posted = SDL_PrivateMouseMotion(0, 0, + xevent.xmotion.x, + xevent.xmotion.y); + } + } + } + break; + + /* Mouse button press? */ + case ButtonPress: { + posted = SDL_PrivateMouseButton(SDL_PRESSED, + xevent.xbutton.button, 0, 0); + } + break; + + /* Mouse button release? */ + case ButtonRelease: { + posted = SDL_PrivateMouseButton(SDL_RELEASED, + xevent.xbutton.button, 0, 0); + } + break; + + /* Key press? */ + case KeyPress: { + SDL_keysym keysym; + KeyCode keycode = xevent.xkey.keycode; + +#ifdef DEBUG_XEVENTS +printf("KeyPress (X11 keycode = 0x%X)\n", xevent.xkey.keycode); +#endif + /* If we're not doing translation, we're done! */ + if ( !SDL_TranslateUNICODE ) { + /* Get the translated SDL virtual keysym and put it on the queue.*/ + keysym.scancode = keycode; + keysym.sym = X11_TranslateKeycode(SDL_Display, keycode); + keysym.mod = KMOD_NONE; + keysym.unicode = 0; + posted = SDL_PrivateKeyboard(SDL_PRESSED, &keysym); + break; + } + + /* Look up the translated value for the key event */ +#ifdef X_HAVE_UTF8_STRING + if ( SDL_IC != NULL ) { + Status status; + KeySym xkeysym; + int i; + /* A UTF-8 character can be at most 6 bytes */ + /* ... It's true, but Xutf8LookupString can + return more than one characters. Moreover, + the spec. put no upper bound, so we should + be ready for longer strings. */ + char keybuf[32]; + char *keydata = keybuf; + int count; + Uint16 utf16buf[32]; + Uint16 *utf16data = utf16buf; + int utf16size; + int utf16length; + + count = Xutf8LookupString(SDL_IC, &xevent.xkey, keydata, sizeof(keybuf), &xkeysym, &status); + if (XBufferOverflow == status) { + /* The IM has just generated somewhat long + string. We need a longer buffer in this + case. */ + keydata = SDL_malloc(count); + if ( keydata == NULL ) { + SDL_OutOfMemory(); + break; + } + count = Xutf8LookupString(SDL_IC, &xevent.xkey, keydata, count, &xkeysym, &status); + } + + switch (status) { + + case XBufferOverflow: { + /* Oops! We have allocated the bytes as + requested by Xutf8LookupString, so the + length of the buffer must be + sufficient. This case should never + happen! */ + SDL_SetError("Xutf8LookupString indicated a double buffer overflow!"); + break; + } + + case XLookupChars: + case XLookupBoth: { + if (0 == count) { + break; + } + + /* We got a converted string from IM. Make + sure to deliver all characters to the + application as SDL events. Note that + an SDL event can only carry one UTF-16 + encoding unit, and a surrogate pair is + delivered as two SDL events. I guess + this behaviour is probably _imported_ + from Windows or MacOS. To do so, we need + to convert the UTF-8 data into UTF-16 + data (not UCS4/UTF-32!). We need an + estimate of the number of UTF-16 encoding + units here. The worst case is pure ASCII + string. Assume so. */ + /* In 1.3 SDL may have a text event instead, that + carries the whole UTF-8 string with it. */ + utf16size = count * sizeof(Uint16); + if (utf16size > sizeof(utf16buf)) { + utf16data = (Uint16 *) SDL_malloc(utf16size); + if (utf16data == NULL) { + SDL_OutOfMemory(); + break; + } + } + utf16length = Utf8ToUtf16((Uint8 *)keydata, count, utf16data, utf16size); + if (utf16length < 0) { + /* The keydata contained an invalid byte + sequence. It should be a bug of the IM + or Xlib... */ + SDL_SetError("Oops! Xutf8LookupString returned an invalid UTF-8 sequence!"); + break; + } + + /* Deliver all UTF-16 encoding units. At + this moment, SDL event queue has a + fixed size (128 events), and an SDL + event can hold just one UTF-16 encoding + unit. So, if we receive more than 128 + UTF-16 encoding units from a commit, + exceeded characters will be lost. */ + for (i = 0; i < utf16length - 1; i++) { + keysym.scancode = 0; + keysym.sym = SDLK_UNKNOWN; + keysym.mod = KMOD_NONE; + keysym.unicode = utf16data[i]; + posted = SDL_PrivateKeyboard(SDL_PRESSED, &keysym); + } + /* The keysym for the last character carries the + scancode and symbol that corresponds to the X11 + keycode. */ + if (utf16length > 0) { + keysym.scancode = keycode; + keysym.sym = (keycode ? X11_TranslateKeycode(SDL_Display, keycode) : 0); + keysym.mod = KMOD_NONE; + keysym.unicode = utf16data[utf16length - 1]; + posted = SDL_PrivateKeyboard(SDL_PRESSED, &keysym); + } + break; + } + + case XLookupKeySym: { + /* I'm not sure whether it is possible that + a zero keycode makes XLookupKeySym + status. What I'm sure is that a + combination of a zero scan code and a non + zero sym makes SDL_PrivateKeyboard + strange state... So, just discard it. + If this doesn't work, I'm receiving bug + reports, and I can know under what + condition this case happens. */ + if (keycode) { + keysym.scancode = keycode; + keysym.sym = X11_TranslateKeycode(SDL_Display, keycode); + keysym.mod = KMOD_NONE; + keysym.unicode = 0; + posted = SDL_PrivateKeyboard(SDL_PRESSED, &keysym); + } + break; + } + + case XLookupNone: { + /* IM has eaten the event. */ + break; + } + + default: + /* An unknown status from Xutf8LookupString. */ + SDL_SetError("Oops! Xutf8LookupStringreturned an unknown status"); + } + + /* Release dynamic buffers if allocated. */ + if (keydata != NULL && keybuf != keydata) { + SDL_free(keydata); + } + if (utf16data != NULL && utf16buf != utf16data) { + SDL_free(utf16data); + } + } + else +#endif + { + static XComposeStatus state; + char keybuf[32]; + + keysym.scancode = keycode; + keysym.sym = X11_TranslateKeycode(SDL_Display, keycode); + keysym.mod = KMOD_NONE; + keysym.unicode = 0; + if ( XLookupString(&xevent.xkey, + keybuf, sizeof(keybuf), + NULL, &state) ) { + /* + * FIXME: XLookupString() may yield more than one + * character, so we need a mechanism to allow for + * this (perhaps null keypress events with a + * unicode value) + */ + keysym.unicode = (Uint8)keybuf[0]; + } + + posted = SDL_PrivateKeyboard(SDL_PRESSED, &keysym); + } + } + break; + + /* Key release? */ + case KeyRelease: { + SDL_keysym keysym; + KeyCode keycode = xevent.xkey.keycode; + + if (keycode == 0) { + /* There should be no KeyRelease for keycode == 0, + since it is a notification from IM but a real + keystroke. */ + /* We need to emit some diagnostic message here. */ + break; + } + +#ifdef DEBUG_XEVENTS +printf("KeyRelease (X11 keycode = 0x%X)\n", xevent.xkey.keycode); +#endif + + /* Get the translated SDL virtual keysym */ + keysym.scancode = keycode; + keysym.sym = X11_TranslateKeycode(SDL_Display, keycode); + keysym.mod = KMOD_NONE; + keysym.unicode = 0; + + posted = SDL_PrivateKeyboard(SDL_RELEASED, &keysym); + } + break; + + /* Have we been iconified? */ + case UnmapNotify: { +#ifdef DEBUG_XEVENTS +printf("UnmapNotify!\n"); +#endif + /* If we're active, make ourselves inactive */ + if ( SDL_GetAppState() & SDL_APPACTIVE ) { + /* Swap out the gamma before we go inactive */ + X11_SwapVidModeGamma(this); + + /* Send an internal deactivate event */ + posted = SDL_PrivateAppActive(0, + SDL_APPACTIVE|SDL_APPINPUTFOCUS); + } + } + break; + + /* Have we been restored? */ + case MapNotify: { +#ifdef DEBUG_XEVENTS +printf("MapNotify!\n"); +#endif + /* If we're not active, make ourselves active */ + if ( !(SDL_GetAppState() & SDL_APPACTIVE) ) { + /* Send an internal activate event */ + posted = SDL_PrivateAppActive(1, SDL_APPACTIVE); + + /* Now that we're active, swap the gamma back */ + X11_SwapVidModeGamma(this); + } + + if ( SDL_VideoSurface && + (SDL_VideoSurface->flags & SDL_FULLSCREEN) ) { + X11_EnterFullScreen(this); + } else { + X11_GrabInputNoLock(this, this->input_grab); + } + X11_CheckMouseModeNoLock(this); + + if ( SDL_VideoSurface ) { + X11_RefreshDisplay(this); + } + } + break; + + /* Have we been resized or moved? */ + case ConfigureNotify: { +#ifdef DEBUG_XEVENTS +printf("ConfigureNotify! (resize: %dx%d)\n", xevent.xconfigure.width, xevent.xconfigure.height); +#endif + if ((X11_PendingConfigureNotifyWidth != -1) && + (X11_PendingConfigureNotifyHeight != -1)) { + if ((xevent.xconfigure.width != X11_PendingConfigureNotifyWidth) && + (xevent.xconfigure.height != X11_PendingConfigureNotifyHeight)) { + /* Event is from before the resize, so ignore. */ + break; + } + X11_PendingConfigureNotifyWidth = -1; + X11_PendingConfigureNotifyHeight = -1; + } + if ( SDL_VideoSurface ) { + if ((xevent.xconfigure.width != SDL_VideoSurface->w) || + (xevent.xconfigure.height != SDL_VideoSurface->h)) { + /* FIXME: Find a better fix for the bug with KDE 1.2 */ + if ( ! ((xevent.xconfigure.width == 32) && + (xevent.xconfigure.height == 32)) ) { + SDL_PrivateResize(xevent.xconfigure.width, + xevent.xconfigure.height); + } + } else { + /* OpenGL windows need to know about the change */ + if ( SDL_VideoSurface->flags & SDL_OPENGL ) { + SDL_PrivateExpose(); + } + } + } + } + break; + + /* Have we been requested to quit (or another client message?) */ + case ClientMessage: { + if ( (xevent.xclient.format == 32) && + (xevent.xclient.data.l[0] == WM_DELETE_WINDOW) ) + { + posted = SDL_PrivateQuit(); + } else + if ( SDL_ProcessEvents[SDL_SYSWMEVENT] == SDL_ENABLE ) { + SDL_SysWMmsg wmmsg; + + SDL_VERSION(&wmmsg.version); + wmmsg.subsystem = SDL_SYSWM_X11; + wmmsg.event.xevent = xevent; + posted = SDL_PrivateSysWMEvent(&wmmsg); + } + } + break; + + /* Do we need to refresh ourselves? */ + case Expose: { +#ifdef DEBUG_XEVENTS +printf("Expose (count = %d)\n", xevent.xexpose.count); +#endif + if ( SDL_VideoSurface && (xevent.xexpose.count == 0) ) { + X11_RefreshDisplay(this); + } + } + break; + + default: { +#ifdef DEBUG_XEVENTS +printf("Unhandled event %d\n", xevent.type); +#endif + /* Only post the event if we're watching for it */ + if ( SDL_ProcessEvents[SDL_SYSWMEVENT] == SDL_ENABLE ) { + SDL_SysWMmsg wmmsg; + + SDL_VERSION(&wmmsg.version); + wmmsg.subsystem = SDL_SYSWM_X11; + wmmsg.event.xevent = xevent; + posted = SDL_PrivateSysWMEvent(&wmmsg); + } + } + break; + } + return(posted); +} + +/* Ack! XPending() actually performs a blocking read if no events available */ +int X11_Pending(Display *display) +{ + /* Flush the display connection and look to see if events are queued */ + XFlush(display); + if ( XEventsQueued(display, QueuedAlready) ) { + return(1); + } + + /* More drastic measures are required -- see if X is ready to talk */ + { + static struct timeval zero_time; /* static == 0 */ + int x11_fd; + fd_set fdset; + + x11_fd = ConnectionNumber(display); + FD_ZERO(&fdset); + FD_SET(x11_fd, &fdset); + if ( select(x11_fd+1, &fdset, NULL, NULL, &zero_time) == 1 ) { + return(XPending(display)); + } + } + + /* Oh well, nothing is ready .. */ + return(0); +} + +void X11_PumpEvents(_THIS) +{ + int pending; + + /* Update activity every five seconds to prevent screensaver. --ryan. */ + if (!allow_screensaver) { + static Uint32 screensaverTicks; + Uint32 nowTicks = SDL_GetTicks(); + if ((nowTicks - screensaverTicks) > 5000) { + XResetScreenSaver(SDL_Display); + screensaverTicks = nowTicks; + } + } + + /* Keep processing pending events */ + pending = 0; + while ( X11_Pending(SDL_Display) ) { + X11_DispatchEvent(this); + ++pending; + } + if ( switch_waiting ) { + Uint32 now; + + now = SDL_GetTicks(); + if ( pending || !SDL_VideoSurface ) { + /* Try again later... */ + if ( switch_waiting & SDL_FULLSCREEN ) { + switch_time = now + 1500; + } else { + switch_time = now + 200; + } + } else if ( (int)(switch_time-now) <= 0 ) { + Uint32 go_fullscreen; + + go_fullscreen = switch_waiting & SDL_FULLSCREEN; + switch_waiting = 0; + if ( SDL_VideoSurface->flags & SDL_FULLSCREEN ) { + if ( go_fullscreen ) { + X11_EnterFullScreen(this); + } else { + X11_LeaveFullScreen(this); + } + } + /* Handle focus in/out when grabbed */ + if ( go_fullscreen ) { + X11_GrabInputNoLock(this, this->input_grab); + } else { + X11_GrabInputNoLock(this, SDL_GRAB_OFF); + } + X11_CheckMouseModeNoLock(this); + } + } +} + +void X11_InitKeymap(void) +{ + int i; + + /* Odd keys used in international keyboards */ + for ( i=0; i<SDL_arraysize(ODD_keymap); ++i ) + ODD_keymap[i] = SDLK_UNKNOWN; + + /* Some of these might be mappable to an existing SDLK_ code */ + ODD_keymap[XK_dead_grave&0xFF] = SDLK_COMPOSE; + ODD_keymap[XK_dead_acute&0xFF] = SDLK_COMPOSE; + ODD_keymap[XK_dead_tilde&0xFF] = SDLK_COMPOSE; + ODD_keymap[XK_dead_macron&0xFF] = SDLK_COMPOSE; + ODD_keymap[XK_dead_breve&0xFF] = SDLK_COMPOSE; + ODD_keymap[XK_dead_abovedot&0xFF] = SDLK_COMPOSE; + ODD_keymap[XK_dead_diaeresis&0xFF] = SDLK_COMPOSE; + ODD_keymap[XK_dead_abovering&0xFF] = SDLK_COMPOSE; + ODD_keymap[XK_dead_doubleacute&0xFF] = SDLK_COMPOSE; + ODD_keymap[XK_dead_caron&0xFF] = SDLK_COMPOSE; + ODD_keymap[XK_dead_cedilla&0xFF] = SDLK_COMPOSE; + ODD_keymap[XK_dead_ogonek&0xFF] = SDLK_COMPOSE; + ODD_keymap[XK_dead_iota&0xFF] = SDLK_COMPOSE; + ODD_keymap[XK_dead_voiced_sound&0xFF] = SDLK_COMPOSE; + ODD_keymap[XK_dead_semivoiced_sound&0xFF] = SDLK_COMPOSE; + ODD_keymap[XK_dead_belowdot&0xFF] = SDLK_COMPOSE; +#ifdef XK_dead_hook + ODD_keymap[XK_dead_hook&0xFF] = SDLK_COMPOSE; +#endif +#ifdef XK_dead_horn + ODD_keymap[XK_dead_horn&0xFF] = SDLK_COMPOSE; +#endif + +#ifdef XK_dead_circumflex + /* These X keysyms have 0xFE as the high byte */ + ODD_keymap[XK_dead_circumflex&0xFF] = SDLK_CARET; +#endif +#ifdef XK_ISO_Level3_Shift + ODD_keymap[XK_ISO_Level3_Shift&0xFF] = SDLK_MODE; /* "Alt Gr" key */ +#endif + + /* Map the miscellaneous keys */ + for ( i=0; i<SDL_arraysize(MISC_keymap); ++i ) + MISC_keymap[i] = SDLK_UNKNOWN; + + /* These X keysyms have 0xFF as the high byte */ + MISC_keymap[XK_BackSpace&0xFF] = SDLK_BACKSPACE; + MISC_keymap[XK_Tab&0xFF] = SDLK_TAB; + MISC_keymap[XK_Clear&0xFF] = SDLK_CLEAR; + MISC_keymap[XK_Return&0xFF] = SDLK_RETURN; + MISC_keymap[XK_Pause&0xFF] = SDLK_PAUSE; + MISC_keymap[XK_Escape&0xFF] = SDLK_ESCAPE; + MISC_keymap[XK_Delete&0xFF] = SDLK_DELETE; + + MISC_keymap[XK_KP_0&0xFF] = SDLK_KP0; /* Keypad 0-9 */ + MISC_keymap[XK_KP_1&0xFF] = SDLK_KP1; + MISC_keymap[XK_KP_2&0xFF] = SDLK_KP2; + MISC_keymap[XK_KP_3&0xFF] = SDLK_KP3; + MISC_keymap[XK_KP_4&0xFF] = SDLK_KP4; + MISC_keymap[XK_KP_5&0xFF] = SDLK_KP5; + MISC_keymap[XK_KP_6&0xFF] = SDLK_KP6; + MISC_keymap[XK_KP_7&0xFF] = SDLK_KP7; + MISC_keymap[XK_KP_8&0xFF] = SDLK_KP8; + MISC_keymap[XK_KP_9&0xFF] = SDLK_KP9; + MISC_keymap[XK_KP_Insert&0xFF] = SDLK_KP0; + MISC_keymap[XK_KP_End&0xFF] = SDLK_KP1; + MISC_keymap[XK_KP_Down&0xFF] = SDLK_KP2; + MISC_keymap[XK_KP_Page_Down&0xFF] = SDLK_KP3; + MISC_keymap[XK_KP_Left&0xFF] = SDLK_KP4; + MISC_keymap[XK_KP_Begin&0xFF] = SDLK_KP5; + MISC_keymap[XK_KP_Right&0xFF] = SDLK_KP6; + MISC_keymap[XK_KP_Home&0xFF] = SDLK_KP7; + MISC_keymap[XK_KP_Up&0xFF] = SDLK_KP8; + MISC_keymap[XK_KP_Page_Up&0xFF] = SDLK_KP9; + MISC_keymap[XK_KP_Delete&0xFF] = SDLK_KP_PERIOD; + MISC_keymap[XK_KP_Decimal&0xFF] = SDLK_KP_PERIOD; + MISC_keymap[XK_KP_Divide&0xFF] = SDLK_KP_DIVIDE; + MISC_keymap[XK_KP_Multiply&0xFF] = SDLK_KP_MULTIPLY; + MISC_keymap[XK_KP_Subtract&0xFF] = SDLK_KP_MINUS; + MISC_keymap[XK_KP_Add&0xFF] = SDLK_KP_PLUS; + MISC_keymap[XK_KP_Enter&0xFF] = SDLK_KP_ENTER; + MISC_keymap[XK_KP_Equal&0xFF] = SDLK_KP_EQUALS; + + MISC_keymap[XK_Up&0xFF] = SDLK_UP; + MISC_keymap[XK_Down&0xFF] = SDLK_DOWN; + MISC_keymap[XK_Right&0xFF] = SDLK_RIGHT; + MISC_keymap[XK_Left&0xFF] = SDLK_LEFT; + MISC_keymap[XK_Insert&0xFF] = SDLK_INSERT; + MISC_keymap[XK_Home&0xFF] = SDLK_HOME; + MISC_keymap[XK_End&0xFF] = SDLK_END; + MISC_keymap[XK_Page_Up&0xFF] = SDLK_PAGEUP; + MISC_keymap[XK_Page_Down&0xFF] = SDLK_PAGEDOWN; + + MISC_keymap[XK_F1&0xFF] = SDLK_F1; + MISC_keymap[XK_F2&0xFF] = SDLK_F2; + MISC_keymap[XK_F3&0xFF] = SDLK_F3; + MISC_keymap[XK_F4&0xFF] = SDLK_F4; + MISC_keymap[XK_F5&0xFF] = SDLK_F5; + MISC_keymap[XK_F6&0xFF] = SDLK_F6; + MISC_keymap[XK_F7&0xFF] = SDLK_F7; + MISC_keymap[XK_F8&0xFF] = SDLK_F8; + MISC_keymap[XK_F9&0xFF] = SDLK_F9; + MISC_keymap[XK_F10&0xFF] = SDLK_F10; + MISC_keymap[XK_F11&0xFF] = SDLK_F11; + MISC_keymap[XK_F12&0xFF] = SDLK_F12; + MISC_keymap[XK_F13&0xFF] = SDLK_F13; + MISC_keymap[XK_F14&0xFF] = SDLK_F14; + MISC_keymap[XK_F15&0xFF] = SDLK_F15; + + MISC_keymap[XK_Num_Lock&0xFF] = SDLK_NUMLOCK; + MISC_keymap[XK_Caps_Lock&0xFF] = SDLK_CAPSLOCK; + MISC_keymap[XK_Scroll_Lock&0xFF] = SDLK_SCROLLOCK; + MISC_keymap[XK_Shift_R&0xFF] = SDLK_RSHIFT; + MISC_keymap[XK_Shift_L&0xFF] = SDLK_LSHIFT; + MISC_keymap[XK_Control_R&0xFF] = SDLK_RCTRL; + MISC_keymap[XK_Control_L&0xFF] = SDLK_LCTRL; + MISC_keymap[XK_Alt_R&0xFF] = SDLK_RALT; + MISC_keymap[XK_Alt_L&0xFF] = SDLK_LALT; + MISC_keymap[XK_Meta_R&0xFF] = SDLK_RMETA; + MISC_keymap[XK_Meta_L&0xFF] = SDLK_LMETA; + MISC_keymap[XK_Super_L&0xFF] = SDLK_LSUPER; /* Left "Windows" */ + MISC_keymap[XK_Super_R&0xFF] = SDLK_RSUPER; /* Right "Windows */ + MISC_keymap[XK_Mode_switch&0xFF] = SDLK_MODE; /* "Alt Gr" key */ + MISC_keymap[XK_Multi_key&0xFF] = SDLK_COMPOSE; /* Multi-key compose */ + + MISC_keymap[XK_Help&0xFF] = SDLK_HELP; + MISC_keymap[XK_Print&0xFF] = SDLK_PRINT; + MISC_keymap[XK_Sys_Req&0xFF] = SDLK_SYSREQ; + MISC_keymap[XK_Break&0xFF] = SDLK_BREAK; + MISC_keymap[XK_Menu&0xFF] = SDLK_MENU; + MISC_keymap[XK_Hyper_R&0xFF] = SDLK_MENU; /* Windows "Menu" key */ +} + +/* Get the translated SDL virtual keysym */ +SDLKey X11_TranslateKeycode(Display *display, KeyCode kc) +{ + KeySym xsym; + SDLKey key; + + xsym = XKeycodeToKeysym(display, kc, 0); +#ifdef DEBUG_KEYS + fprintf(stderr, "Translating key code %d -> 0x%.4x\n", kc, xsym); +#endif + key = SDLK_UNKNOWN; + if ( xsym ) { + switch (xsym>>8) { + case 0x1005FF: +#ifdef SunXK_F36 + if ( xsym == SunXK_F36 ) + key = SDLK_F11; +#endif +#ifdef SunXK_F37 + if ( xsym == SunXK_F37 ) + key = SDLK_F12; +#endif + break; + case 0x00: /* Latin 1 */ + key = (SDLKey)(xsym & 0xFF); + break; + case 0x01: /* Latin 2 */ + case 0x02: /* Latin 3 */ + case 0x03: /* Latin 4 */ + case 0x04: /* Katakana */ + case 0x05: /* Arabic */ + case 0x06: /* Cyrillic */ + case 0x07: /* Greek */ + case 0x08: /* Technical */ + case 0x0A: /* Publishing */ + case 0x0C: /* Hebrew */ + case 0x0D: /* Thai */ + /* These are wrong, but it's better than nothing */ + key = (SDLKey)(xsym & 0xFF); + break; + case 0xFE: + key = ODD_keymap[xsym&0xFF]; + break; + case 0xFF: + key = MISC_keymap[xsym&0xFF]; + break; + default: + /* + fprintf(stderr, "X11: Unhandled xsym, sym = 0x%04x\n", + (unsigned int)xsym); + */ + break; + } + } else { + /* X11 doesn't know how to translate the key! */ + switch (kc) { + /* Caution: + These keycodes are from the Microsoft Keyboard + */ + case 115: + key = SDLK_LSUPER; + break; + case 116: + key = SDLK_RSUPER; + break; + case 117: + key = SDLK_MENU; + break; + default: + /* + * no point in an error message; happens for + * several keys when we get a keymap notify + */ + break; + } + } + return key; +} + +/* X11 modifier masks for various keys */ +static unsigned meta_l_mask, meta_r_mask, alt_l_mask, alt_r_mask; +static unsigned num_mask, mode_switch_mask; + +static void get_modifier_masks(Display *display) +{ + static unsigned got_masks; + int i, j; + XModifierKeymap *xmods; + unsigned n; + + if(got_masks) + return; + + xmods = XGetModifierMapping(display); + n = xmods->max_keypermod; + for(i = 3; i < 8; i++) { + for(j = 0; j < n; j++) { + KeyCode kc = xmods->modifiermap[i * n + j]; + KeySym ks = XKeycodeToKeysym(display, kc, 0); + unsigned mask = 1 << i; + switch(ks) { + case XK_Num_Lock: + num_mask = mask; break; + case XK_Alt_L: + alt_l_mask = mask; break; + case XK_Alt_R: + alt_r_mask = mask; break; + case XK_Meta_L: + meta_l_mask = mask; break; + case XK_Meta_R: + meta_r_mask = mask; break; + case XK_Mode_switch: + mode_switch_mask = mask; break; + } + } + } + XFreeModifiermap(xmods); + got_masks = 1; +} + + +/* + * This function is semi-official; it is not officially exported and should + * not be considered part of the SDL API, but may be used by client code + * that *really* needs it (including legacy code). + * It is slow, though, and should be avoided if possible. + * + * Note that it isn't completely accurate either; in particular, multi-key + * sequences (dead accents, compose key sequences) will not work since the + * state has been irrevocably lost. + */ +Uint16 X11_KeyToUnicode(SDLKey keysym, SDLMod modifiers) +{ + struct SDL_VideoDevice *this = current_video; + char keybuf[32]; + int i; + KeySym xsym = 0; + XKeyEvent xkey; + Uint16 unicode; + + if ( !this || !SDL_Display ) { + return 0; + } + + SDL_memset(&xkey, 0, sizeof(xkey)); + xkey.display = SDL_Display; + + xsym = keysym; /* last resort if not found */ + for (i = 0; i < 256; ++i) { + if ( MISC_keymap[i] == keysym ) { + xsym = 0xFF00 | i; + break; + } else if ( ODD_keymap[i] == keysym ) { + xsym = 0xFE00 | i; + break; + } + } + + xkey.keycode = XKeysymToKeycode(xkey.display, xsym); + + get_modifier_masks(SDL_Display); + if(modifiers & KMOD_SHIFT) + xkey.state |= ShiftMask; + if(modifiers & KMOD_CAPS) + xkey.state |= LockMask; + if(modifiers & KMOD_CTRL) + xkey.state |= ControlMask; + if(modifiers & KMOD_MODE) + xkey.state |= mode_switch_mask; + if(modifiers & KMOD_LALT) + xkey.state |= alt_l_mask; + if(modifiers & KMOD_RALT) + xkey.state |= alt_r_mask; + if(modifiers & KMOD_LMETA) + xkey.state |= meta_l_mask; + if(modifiers & KMOD_RMETA) + xkey.state |= meta_r_mask; + if(modifiers & KMOD_NUM) + xkey.state |= num_mask; + + unicode = 0; + if ( XLookupString(&xkey, keybuf, sizeof(keybuf), NULL, NULL) ) + unicode = (unsigned char)keybuf[0]; + return(unicode); +} + + +/* + * Called when focus is regained, to read the keyboard state and generate + * synthetic keypress/release events. + * key_vec is a bit vector of keycodes (256 bits) + */ +void X11_SetKeyboardState(Display *display, const char *key_vec) +{ + char keys_return[32]; + int i; + Uint8 *kstate = SDL_GetKeyState(NULL); + SDLMod modstate; + Window junk_window; + int x, y; + unsigned int mask; + + /* The first time the window is mapped, we initialize key state */ + if ( ! key_vec ) { + XQueryKeymap(display, keys_return); + key_vec = keys_return; + } + + /* Get the keyboard modifier state */ + modstate = 0; + get_modifier_masks(display); + if ( XQueryPointer(display, DefaultRootWindow(display), + &junk_window, &junk_window, &x, &y, &x, &y, &mask) ) { + if ( mask & LockMask ) { + modstate |= KMOD_CAPS; + } + if ( mask & mode_switch_mask ) { + modstate |= KMOD_MODE; + } + if ( mask & num_mask ) { + modstate |= KMOD_NUM; + } + } + + /* Zero the new keyboard state and generate it */ + SDL_memset(kstate, 0, SDLK_LAST); + /* + * An obvious optimisation is to check entire longwords at a time in + * both loops, but we can't be sure the arrays are aligned so it's not + * worth the extra complexity + */ + for ( i = 0; i < 32; i++ ) { + int j; + if ( !key_vec[i] ) + continue; + for ( j = 0; j < 8; j++ ) { + if ( key_vec[i] & (1 << j) ) { + SDLKey key; + KeyCode kc = (i << 3 | j); + key = X11_TranslateKeycode(display, kc); + if ( key == SDLK_UNKNOWN ) { + continue; + } + kstate[key] = SDL_PRESSED; + switch (key) { + case SDLK_LSHIFT: + modstate |= KMOD_LSHIFT; + break; + case SDLK_RSHIFT: + modstate |= KMOD_RSHIFT; + break; + case SDLK_LCTRL: + modstate |= KMOD_LCTRL; + break; + case SDLK_RCTRL: + modstate |= KMOD_RCTRL; + break; + case SDLK_LALT: + modstate |= KMOD_LALT; + break; + case SDLK_RALT: + modstate |= KMOD_RALT; + break; + case SDLK_LMETA: + modstate |= KMOD_LMETA; + break; + case SDLK_RMETA: + modstate |= KMOD_RMETA; + break; + default: + break; + } + } + } + } + + /* Hack - set toggle key state */ + if ( modstate & KMOD_CAPS ) { + kstate[SDLK_CAPSLOCK] = SDL_PRESSED; + } else { + kstate[SDLK_CAPSLOCK] = SDL_RELEASED; + } + if ( modstate & KMOD_NUM ) { + kstate[SDLK_NUMLOCK] = SDL_PRESSED; + } else { + kstate[SDLK_NUMLOCK] = SDL_RELEASED; + } + + /* Set the final modifier state */ + SDL_SetModState(modstate); +} + +void X11_InitOSKeymap(_THIS) +{ + X11_InitKeymap(); +} + |