| /* |
| SDL - Simple DirectMedia Layer |
| Copyright (C) 1997-2006 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); |
| |
| |
| #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) { |
| if (p >= max_ptr) { |
| /* No more output space. */ |
| return -1; |
| } |
| Uint8 const c = *utf8; |
| 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 ( (xevent.xcrossing.mode != NotifyGrab) && |
| (xevent.xcrossing.mode != NotifyUngrab) ) { |
| 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; |
| |
| /* Some IM requires MappingNotify to be passed to |
| XRefreshKeyboardMapping by the app. */ |
| case MappingNotify: { |
| XRefreshKeyboardMapping(&xevent.xmapping); |
| } |
| break; |
| |
| /* 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 ( 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; |
| |
| /* 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(); |
| } |
| |
| void X11_SaveScreenSaver(Display *display, int *saved_timeout, BOOL *dpms) |
| { |
| int timeout, interval, prefer_blank, allow_exp; |
| XGetScreenSaver(display, &timeout, &interval, &prefer_blank, &allow_exp); |
| *saved_timeout = timeout; |
| |
| #if SDL_VIDEO_DRIVER_X11_DPMS |
| if ( SDL_X11_HAVE_DPMS ) { |
| int dummy; |
| if ( DPMSQueryExtension(display, &dummy, &dummy) ) { |
| CARD16 state; |
| DPMSInfo(display, &state, dpms); |
| } |
| } |
| #else |
| *dpms = 0; |
| #endif /* SDL_VIDEO_DRIVER_X11_DPMS */ |
| } |
| |
| void X11_DisableScreenSaver(_THIS, Display *display) |
| { |
| int timeout, interval, prefer_blank, allow_exp; |
| |
| if (this->hidden->allow_screensaver) { |
| return; |
| } |
| |
| XGetScreenSaver(display, &timeout, &interval, &prefer_blank, &allow_exp); |
| timeout = 0; |
| XSetScreenSaver(display, timeout, interval, prefer_blank, allow_exp); |
| |
| #if SDL_VIDEO_DRIVER_X11_DPMS |
| if ( SDL_X11_HAVE_DPMS ) { |
| int dummy; |
| if ( DPMSQueryExtension(display, &dummy, &dummy) ) { |
| DPMSDisable(display); |
| } |
| } |
| #endif /* SDL_VIDEO_DRIVER_X11_DPMS */ |
| } |
| |
| void X11_RestoreScreenSaver(_THIS, Display *display, int saved_timeout, BOOL dpms) |
| { |
| int timeout, interval, prefer_blank, allow_exp; |
| |
| if (this->hidden->allow_screensaver) { |
| return; |
| } |
| |
| XGetScreenSaver(display, &timeout, &interval, &prefer_blank, &allow_exp); |
| timeout = saved_timeout; |
| XSetScreenSaver(display, timeout, interval, prefer_blank, allow_exp); |
| |
| #if SDL_VIDEO_DRIVER_X11_DPMS |
| if ( SDL_X11_HAVE_DPMS ) { |
| int dummy; |
| if ( DPMSQueryExtension(display, &dummy, &dummy) ) { |
| if ( dpms ) { |
| DPMSEnable(display); |
| } |
| } |
| } |
| #endif /* SDL_VIDEO_DRIVER_X11_DPMS */ |
| } |