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N-VNC-Enable-use-of-all-keyboard-layouts-indepe...
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File N-VNC-Enable-use-of-all-keyboard-layouts-independent-o.patch of Package xorg-x11-server
From: Matthias Hopf <mhopf@suse.de> Date: Tue, 6 Sep 2011 08:35:57 +0200 Subject: [PATCH 5/6] VNC: Enable use of all keyboard layouts, independent of remotely set layout Patch-Mainline: Currently no upstream project. Git-commit: 6885b927a6065e6379cfaa3ebbf6c51445a015d9 Signed-off: Egbert Eich <eich@suse.de> References: bnc #400520, #605015, #660797 Changes: - Use virtual core keyboard for events and key state lookup: Make layout changes work again - see discussion on https://defect.opensolaris.org/bz/show_bug.cgi?id=8687 - keycode lookup: Don't use any static keyboard layout any more. - ISO-Level3-Shift handling: Enable the use of keyboard layouts that use AltGr for 3rd and 4th level. - Make keyboard handling more XKB aware: Previous code was e.g. not multi-group aware. - Nuke use of legacy keymap as far as possible: Creating legacy keymap takes time, and it has to be freed again afterwards. - Free index lookup: Make XKB aware. - Ignore calls for NoSymbol: This destroys otherwise valid entries. - Fix analysis for shift/level3 event faking: Previous broken version lead to e.g. Shift+PgUp not being recognized. - Add tons of debug output (disabled). Signed-off-by: Egbert Eich <eich@freedesktop.org> Rebased to 1.12.1 by Mike Gorse <mgorse@suse.com> --- diff -pruN xorg-server-1.12.1.orig/hw/vnc/kbdptr.c xorg-server-1.12.1/hw/vnc/kbdptr.c --- xorg-server-1.12.1.orig/hw/vnc/kbdptr.c 2012-04-18 14:14:07.436250934 -0500 +++ xorg-server-1.12.1/hw/vnc/kbdptr.c 2012-04-18 14:15:27.656248047 -0500 @@ -34,6 +34,8 @@ #include "X11/Xproto.h" #include "inputstr.h" #include "inpututils.h" +#include "xkbsrv.h" +#include "xkbstr.h" #define XK_CYRILLIC #include <X11/keysym.h> #include <X11/Xatom.h> @@ -46,6 +48,7 @@ #include "dmxinput.h" #endif +#if 0 #if !XFREE86VNC #define MIN_KEY_CODE 8 @@ -196,21 +199,20 @@ static KeySym map[MAX_KEY_CODE * GLYPHS_ #define N_PREDEFINED_KEYS (sizeof(map) / (sizeof(KeySym) * GLYPHS_PER_KEY)) #endif +#endif #define KEY_IS_PRESSED(keycode) \ - (kbdDevice->key->down[(keycode) >> 3] & (1 << ((keycode) & 7))) + (inputInfo.keyboard->key->down[(keycode) >> 3] & (1 << ((keycode) & 7))) static void vncXConvertCase(KeySym sym, KeySym *lower, KeySym *upper); -static DeviceIntPtr ptrDevice = NULL, kbdDevice = NULL; +static DeviceIntPtr ptrDevice = NULL; void vncSetKeyboardDevice(DeviceIntPtr kbd) { - if (kbdDevice && kbd) - return; /* set once */ - kbdDevice = kbd; + // obsoleted by inputInfo } @@ -263,6 +265,29 @@ EnqueueKey(DeviceIntPtr kbdDev, int type QueueKeyboardEvents(kbdDev, type, detail, NULL); } +/* In-server and highly changed version of XkbKeycodeToKeysym */ +static KeySym +_XkbKeycodeToKeysym(XkbDescPtr xkb, KeyCode kc, int group, int level) +{ + KeySym ks; + + if ((kc<xkb->min_key_code)||(kc>xkb->max_key_code)) + return NoSymbol; + /* Treat single group elements as present in all groups */ + if (XkbKeyNumGroups (xkb,kc) == 1) + group = 0; + if ((group<0)||(level<0)||(group>=XkbKeyNumGroups(xkb,kc))) + return NoSymbol; + if (level < XkbKeyGroupWidth(xkb, kc, group)) + ks = XkbKeySymEntry(xkb, kc, level, group); + else + ks = NoSymbol; + /* Treat 'K' as 'K K', */ + if (ks == NoSymbol && (level & 1) && level-1 < XkbKeyGroupWidth(xkb, kc, group)) + ks = XkbKeySymEntry(xkb, kc, level-1, group); + return ks; +} + /* * Called when the rfbserver receives a rfbKeyEvent event from a client. * Put an X keyboard event into the event queue. @@ -271,21 +296,35 @@ void KbdAddEvent(Bool down, KeySym keySym, rfbClientPtr cl) { const int type = down ? KeyPress : KeyRelease; - KeySymsPtr keySyms; - XkbStateRec *xkb; - int i; + XkbSrvInfoPtr xkbInfo; + int i, group, level; int keyCode = 0; - int freeIndex = -1; Bool fakeShiftPress = FALSE; Bool fakeShiftLRelease = FALSE; Bool fakeShiftRRelease = FALSE; Bool shiftMustBeReleased = FALSE; Bool shiftMustBePressed = FALSE; + Bool fakeLevel3Press = FALSE; + Bool fakeLevel3Release = FALSE; + Bool level3MustBeReleased = FALSE; + Bool level3MustBePressed = FALSE; + + /* Incomplete maps may create NoSymbol - which lets us + * select and/or overwrite otherwise valid entries. + * E.g Level3+a in serbian layout creates NoSymbol on os11.4 + * 2011-05-24 mhopf@suse.de */ + if (keySym == NoSymbol) { + ErrorF("KbdAddEvent: ignoring illegal NoSymbol\n"); + return; + } - if (!kbdDevice) - return; - - keySyms = XkbGetCoreMap(kbdDevice); + xkbInfo = inputInfo.keyboard->key->xkbInfo; + group = xkbInfo->state.group; + level = (KEY_IS_PRESSED(ISO_LEVEL3_KEY_CODE) ? 2 : 0) | + (XkbStateFieldFromRec(&xkbInfo->state) & ShiftMask ? 1 : 0); +#ifdef DEBUG + ErrorF ("VNCkbd:\t%s Sym %04x\n", down ? "+":"-", (int)keySym); +#endif #ifdef CORBA if (cl) { @@ -303,6 +342,12 @@ KbdAddEvent(Bool down, KeySym keySym, rf * * Alan. */ + /* Never use predefined keys. + * This is inherently incapable of dealing with changing + * keyboard layouts. Not being able to work with non-local xmodmaps + * is a nuisance at worst, and probably even preferred. + * 2011-04-15 mhopf@suse.de */ +#ifdef NOTANYMORE #if !XFREE86VNC /* First check if it's one of our predefined keys. If so then we can make some attempt at allowing an xmodmap inside a VNC desktop behave @@ -329,107 +374,227 @@ KbdAddEvent(Bool down, KeySym keySym, rf } } #endif +#endif if (!keyCode) { /* not one of our predefined keys - see if it's in the current keyboard mapping (i.e. we've already allocated an extra keycode for it) */ - if (keySyms->mapWidth < 2) { - ErrorF("KbdAddEvent: Sanity check failed - Keyboard mapping has " - "less than 2 keysyms per keycode (KeySym 0x%x)\n", (int)keySym); - return; - } + for (keyCode = MIN_KEY_CODE; keyCode < MIN_KEY_CODE + NO_OF_KEYS; keyCode++) { + /* Check all keycodes, but only continue on those where + * backconversion results in keySym. + * 2011-05-20 mhopf@suse.de */ + +#ifdef DEBUG + int j; + ErrorF (" keyCode %3d map# %4d++ level %d of %d: keySyms", + keyCode, (i / keySyms->mapWidth) * keySyms->mapWidth, + i % keySyms->mapWidth, keySyms->mapWidth); + for (j = 0; j < keySyms->mapWidth; j++) + ErrorF (" %02x", (int)keySyms->map[(i / keySyms->mapWidth) * keySyms->mapWidth + j]); + ErrorF ("\n"); + ErrorF (" group %d of %d width %d: keySyms", + group, XkbKeyNumGroups(xkbInfo->desc, keyCode), + XkbKeyGroupWidth(xkbInfo->desc, keyCode, group)); + if (XkbKeyNumGroups(xkbInfo->desc, keyCode) > group) + for (j = 0; j < XkbKeyGroupWidth(xkbInfo->desc, keyCode, group); j++) + ErrorF (" %02x", (int) XkbKeySymEntry(xkbInfo->desc, keyCode, j, group)); + ErrorF ("\n"); +#endif - for (i = 0; i < NO_OF_KEYS * keySyms->mapWidth; i++) { - if (keySym == keySyms->map[i]) { - keyCode = MIN_KEY_CODE + i / keySyms->mapWidth; - - if (keySyms->map[(i / keySyms->mapWidth) - * keySyms->mapWidth + 1] != NoSymbol) { - - /* this keycode has more than one symbol associated with - it, so shift state is important */ - - if ((i % keySyms->mapWidth) == 0) - shiftMustBeReleased = TRUE; - else - shiftMustBePressed = TRUE; - } + /* Check whether keySym is reachable in current group + * by any shift/Level3_shift state (preferrable w/o change). + * This doesn't do real modifyer analysis, only Shift and Level3_Shift. + * 2011-05-23 mhopf@suse.de */ + if (_XkbKeycodeToKeysym(xkbInfo->desc, keyCode, group, level) == keySym) + break; + if (_XkbKeycodeToKeysym(xkbInfo->desc, keyCode, group, level ^ 2) == keySym) { + if (level & 2) + level3MustBeReleased = TRUE; + else + level3MustBePressed = TRUE; break; } - if ((freeIndex == -1) && (keySyms->map[i] == NoSymbol) - && (i % keySyms->mapWidth) == 0) - { - freeIndex = i; + if (_XkbKeycodeToKeysym(xkbInfo->desc, keyCode, group, level ^ 1) == keySym) { + if (level & 1) + shiftMustBeReleased = TRUE; + else + shiftMustBePressed = TRUE; + break; + } + if (_XkbKeycodeToKeysym(xkbInfo->desc, keyCode, group, level ^ 3) == keySym) { + if (level & 2) + level3MustBeReleased = TRUE; + else + level3MustBePressed = TRUE; + if (level & 1) + shiftMustBeReleased = TRUE; + else + shiftMustBePressed = TRUE; + break; } } + if (keyCode == MIN_KEY_CODE + NO_OF_KEYS) + keyCode = 0; } if (!keyCode) { KeySym lower, upper; + KeySymsPtr keySyms = XkbGetCoreMap(inputInfo.keyboard); /* we don't have an existing keycode - make one up on the fly and add it to the keyboard mapping. Thanks to Vlad Harchev for pointing out problems with non-ascii capitalisation. */ - if (freeIndex == -1) { + /* Find free index for current group. */ + for (keyCode = MIN_KEY_CODE; keyCode < MIN_KEY_CODE + NO_OF_KEYS; keyCode++) { + /* A keyCode is free if no groups are assigned at all */ + if (XkbKeyNumGroups(xkbInfo->desc, keyCode) == 0) + break; +#ifdef NOTANYMORE + /* We can use exact map positions for group 1+2, but only partially + * filling out xkb legacy maps may suddenly change the # of groups. + * Reason for that is unknown yet. Might be related to (fixed) NoSymbol issue. + * 2011-05-24 mhopf@suse.de */ + /* For primary groups: A keyCode is free if current group is empty */ + if (XkbKeyGroupWidth(xkbInfo->desc, keyCode, group) < 1 && group < 2) + break; + /* Never touch groups that have a single level only (weird group?!?) */ + if (XkbKeyGroupWidth(xkbInfo->desc, keyCode, group) < 2) + continue; + /* For primary groups: A keyCode is free if only NoSymbol is assigned + * to available levels (only validating levels 0-3) */ + if (group < 2 && + XkbKeySymEntry(xkbInfo->desc, keyCode, 0, group) == NoSymbol && + XkbKeySymEntry(xkbInfo->desc, keyCode, 1, group) == NoSymbol && + (XkbKeyGroupWidth(xkbInfo->desc, keyCode, group) < 3 || + (XkbKeySymEntry(xkbInfo->desc, keyCode, 2, group) == NoSymbol && + (XkbKeyGroupWidth(xkbInfo->desc, keyCode, group) < 4 || + XkbKeySymEntry(xkbInfo->desc, keyCode, 3, group) == NoSymbol)))) + break; +#endif + } + + if (keyCode == MIN_KEY_CODE + NO_OF_KEYS) { ErrorF("KbdAddEvent: ignoring KeySym 0x%x - no free KeyCodes\n", (int)keySym); + free (keySyms->map); + free (keySyms); return; } - keyCode = MIN_KEY_CODE + freeIndex / keySyms->mapWidth; - vncXConvertCase(keySym, &lower, &upper); - if (lower == upper) { - keySyms->map[freeIndex] = keySym; - - } else { - keySyms->map[freeIndex] = lower; - keySyms->map[freeIndex+1] = upper; - + /* Adding keys is not using xkb mechanisms yet, but relying on support + * for changing keys in the legacy map. Should be changed, eventually. + * 2011-05-19 mhopf@suse.de */ +#ifdef NOTANYMORE + if (group < 2) { + /* Only set mapping for active group. Will only work with dual layouts. + * 2011-05-23 mhopf@suse.de */ + int active_group_offset = group ? 2 : 0; + + if (lower == upper) { + keySyms->map[(keyCode - MIN_KEY_CODE) * keySyms->mapWidth + active_group_offset] = keySym; + keySyms->map[(keyCode - MIN_KEY_CODE) * keySyms->mapWidth + active_group_offset + 1] = NoSymbol; + } else { + keySyms->map[(keyCode - MIN_KEY_CODE) * keySyms->mapWidth + active_group_offset] = lower; + keySyms->map[(keyCode - MIN_KEY_CODE) * keySyms->mapWidth + active_group_offset + 1] = upper; + } + } +#endif + /* Generic layouts needs to set the full map width. + * Weird enough, mapWidth seems too big... + * 2011-05-23 mhopf@suse.de */ + for (i = 0; i < (keySyms->mapWidth & ~1); i += 2) { + if (lower == upper) { + keySyms->map[(keyCode - MIN_KEY_CODE) * keySyms->mapWidth + i] = keySym; + keySyms->map[(keyCode - MIN_KEY_CODE) * keySyms->mapWidth + i + 1] = NoSymbol; + } else { + keySyms->map[(keyCode - MIN_KEY_CODE) * keySyms->mapWidth + i] = lower; + keySyms->map[(keyCode - MIN_KEY_CODE) * keySyms->mapWidth + i + 1] = upper; + } + } + if (lower != upper) { if (keySym == lower) shiftMustBeReleased = TRUE; else shiftMustBePressed = TRUE; } + level3MustBeReleased = TRUE; - XkbApplyMappingChange(kbdDevice, keySyms, keyCode, 1, NULL, serverClient); + XkbApplyMappingChange(inputInfo.keyboard, keySyms, keyCode, 1, NULL, serverClient); ErrorF("KbdAddEvent: unknown KeySym 0x%x - allocating KeyCode %d\n", (int)keySym, keyCode); + free (keySyms->map); + free (keySyms); } - xkb = &kbdDevice->key->xkbInfo->state; +#ifdef DEBUG + ErrorF ("\t%s Sym %04x Code%3d\tState x%02x %s%s%s\tSh %s%s\tL3 %s%s\n", + down ? "+":"-", (int)keySym, keyCode, XkbStateFieldFromRec(&xkbInfo->state), + KEY_IS_PRESSED(SHIFT_L_KEY_CODE) ? "Sl":"", + KEY_IS_PRESSED(SHIFT_R_KEY_CODE) ? "Sr":"", + KEY_IS_PRESSED(ISO_LEVEL3_KEY_CODE) ? "L3":"", + shiftMustBePressed ? "+":"", shiftMustBeReleased ? "-":"", + level3MustBePressed ? "+":"", level3MustBeReleased ? "-":""); +#endif +#ifdef NOTANYMORE + int back = _XkbKeycodeToKeysym (xkbInfo->desc, keyCode, group, + ((level3MustBePressed || (!level3MustBeReleased && (level & 2))) ? 2 : 0) | + ((shiftMustBePressed || (!shiftMustBeReleased && (level & 1))) ? 1 : 0)); + ErrorF ("\tvalidate code %d %-2s%-2s -> sym %04x %s\n\n", keyCode, + (shiftMustBePressed || (!shiftMustBeReleased && (level & 1))) ? "Sh" : "", + (level3MustBePressed || (!level3MustBeReleased && (level & 2))) ? "L3" : "", + back, (back == keySym ? "ok" : "FAILED")); +#endif + if (down) { - if (shiftMustBePressed && !(XkbStateFieldFromRec(xkb) & ShiftMask)) { + /* TODO: would require to check which keycodes are actually + * bound to ISO_Level3_Shift and/or Shift_L. + * 2011-04-18 mhopf@suse.de */ + if (level3MustBePressed && !(level & 2)) { + fakeLevel3Press = TRUE; + EnqueueKey(inputInfo.keyboard, KeyPress, ISO_LEVEL3_KEY_CODE); + } + if (level3MustBeReleased && (level & 2)) { + fakeLevel3Release = TRUE; + EnqueueKey(inputInfo.keyboard, KeyRelease, ISO_LEVEL3_KEY_CODE); + } + if (shiftMustBePressed && !(level & 1)) { fakeShiftPress = TRUE; - EnqueueKey(kbdDevice, KeyPress, SHIFT_L_KEY_CODE); + EnqueueKey(inputInfo.keyboard, KeyPress, SHIFT_L_KEY_CODE); } - if (shiftMustBeReleased && (XkbStateFieldFromRec(xkb) & ShiftMask)) { + if (shiftMustBeReleased && (level & 1)) { if (KEY_IS_PRESSED(SHIFT_L_KEY_CODE)) { fakeShiftLRelease = TRUE; - EnqueueKey(kbdDevice, KeyRelease, SHIFT_L_KEY_CODE); + EnqueueKey(inputInfo.keyboard, KeyRelease, SHIFT_L_KEY_CODE); } if (KEY_IS_PRESSED(SHIFT_R_KEY_CODE)) { fakeShiftRRelease = TRUE; - EnqueueKey(kbdDevice, KeyRelease, SHIFT_R_KEY_CODE); + EnqueueKey(inputInfo.keyboard, KeyRelease, SHIFT_R_KEY_CODE); } } } - EnqueueKey(kbdDevice, type, keyCode); + EnqueueKey(inputInfo.keyboard, type, keyCode); if (fakeShiftPress) { - EnqueueKey(kbdDevice, KeyRelease, SHIFT_L_KEY_CODE); + EnqueueKey(inputInfo.keyboard, KeyRelease, SHIFT_L_KEY_CODE); } if (fakeShiftLRelease) { - EnqueueKey(kbdDevice, KeyPress, SHIFT_L_KEY_CODE); + EnqueueKey(inputInfo.keyboard, KeyPress, SHIFT_L_KEY_CODE); } if (fakeShiftRRelease) { - EnqueueKey(kbdDevice, KeyPress, SHIFT_R_KEY_CODE); + EnqueueKey(inputInfo.keyboard, KeyPress, SHIFT_R_KEY_CODE); + } + if (fakeLevel3Press) { + EnqueueKey(inputInfo.keyboard, KeyRelease, ISO_LEVEL3_KEY_CODE); + } + if (fakeLevel3Release) { + EnqueueKey(inputInfo.keyboard, KeyPress, ISO_LEVEL3_KEY_CODE); } } @@ -480,15 +645,15 @@ KbdReleaseAllKeys(void) { int i, j; - if (!kbdDevice) + if (!inputInfo.keyboard) return; for (i = 0; i < DOWN_LENGTH; i++) { - if (kbdDevice->key->down[i] != 0) { + if (inputInfo.keyboard->key->down[i] != 0) { for (j = 0; j < 8; j++) { - if (kbdDevice->key->down[i] & (1 << j)) { + if (inputInfo.keyboard->key->down[i] & (1 << j)) { int detail = (i << 3) | j; - EnqueueKey(kbdDevice, KeyRelease, detail); + EnqueueKey(inputInfo.keyboard, KeyRelease, detail); } } } diff -pruN xorg-server-1.12.1.orig/hw/vnc/keyboard.h xorg-server-1.12.1/hw/vnc/keyboard.h --- xorg-server-1.12.1.orig/hw/vnc/keyboard.h 2012-04-18 14:14:07.437250922 -0500 +++ xorg-server-1.12.1/hw/vnc/keyboard.h 2012-04-18 14:15:27.657248035 -0500 @@ -32,3 +32,4 @@ #define META_R_KEY_CODE (MIN_KEY_CODE + 108) #define ALT_L_KEY_CODE (MIN_KEY_CODE + 56) #define ALT_R_KEY_CODE (MIN_KEY_CODE + 105) +#define ISO_LEVEL3_KEY_CODE ALT_R_KEY_CODE
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