From f15636ac529481a9d83e0250ff89690296f96a3d Mon Sep 17 00:00:00 2001
From: "Zephaniah E. Hull" <warp@agamemnon.b5>
Date: Wed, 6 Jun 2007 04:41:54 -0400
Subject: Wheel mice work again! (Old configs don't.)

evdev.c:

    Add EvdevParseMapToButton and EvdevParseMapToButtons to evdev_map_parsers.

    Add EvdevParseMapOption to search through evdev_map_parsers.

    Fix up EvdevTokenize to handle the evdev_option_token_t changes.

    EvdevAxesNew0 after BtnNew0 instead of before now.
    (This isn't the right fix.)

evdev.h:

    EVDEV_MAXBUTTONS -> BTN_MAX.

    Redid evdevBtnRec with the new mapping goodness.

    Removed v_min and v_max from evdevAbsRec.

    Reworked evdev_option_token_t, no union, no is_chain.
    If it's a chain, it still has a string, but the chain pointer is set.

    EvdevParseMapToButton, EvdevParseMapToButtons, and EvdevParseMapOption.

evdev_axes.c:

    Kill off EvdevAxesMapButton, a variant lives in evdev_btn.c now.

    Changes for the evdev_option_token_t changes.

    Use EvdevParseMapOption instead of repeating the contents twice.

    Disable EV_ABS_V_INVERT for the moment. (Better fix maybe needed.)

evdev_btn.c:

    s/Ptr /Rec */g

    EvdevMapButton and parser.

    EvdevMapButtons and parser.

    Nuke EvdevBtnCalcRemap as a whole.

    Move everything but the alloc to New1 from New0.

    New mapping code, same guts os the axes mapping code even.
---
 src/evdev.c      |  63 +++++++---
 src/evdev.h      |  35 +++---
 src/evdev_axes.c | 129 +++++---------------
 src/evdev_btn.c  | 360 +++++++++++++++++++++++++++++--------------------------
 4 files changed, 290 insertions(+), 297 deletions(-)

diff --git a/src/evdev.c b/src/evdev.c
index f2debd2..881f079 100644
--- a/src/evdev.c
+++ b/src/evdev.c
@@ -98,23 +98,60 @@ evdev_map_parsers_t evdev_map_parsers[] = {
 	.name = "AbsAxis",
 	.func = EvdevParseMapToAbsAxis,
     },
+    {
+	.name = "Button",
+	.func = EvdevParseMapToButton,
+    },
+    {
+	.name = "Buttons",
+	.func = EvdevParseMapToButtons,
+    },
     {
 	.name = NULL,
 	.func = NULL,
     }
 };
 
+Bool
+EvdevParseMapOption (InputInfoRec *pInfo, char *option, char *def, void **map_data, evdev_map_func_f *map_func)
+{
+    evdev_option_token_t *tokens;
+    const char *s;
+    int i;
+
+    s = xf86SetStrOption(pInfo->options, option, def);
+    tokens = EvdevTokenize (s, " ="); 
+    if (tokens->next) {
+	for (i = 0; evdev_map_parsers[i].name; i++) {
+	    if (!strcasecmp (tokens->str, evdev_map_parsers[i].name)) {
+		if (!evdev_map_parsers[i].func (pInfo, option, tokens->next, map_data, map_func)) {
+		    xf86Msg (X_ERROR, "%s: Unable to parse '%s' as a map specifier.\n", pInfo->name, s);
+		    EvdevFreeTokens (tokens);
+		    return 0;
+		}
+		return 1;
+	    }
+	}
+
+	if (!evdev_map_parsers[i].name)
+	    xf86Msg (X_ERROR, "%s: Unable to find parser for '%s' as a map specifier.\n", pInfo->name, s);
+    } else {
+	xf86Msg (X_ERROR, "%s: Unable to parse '%s' as a map specifier string.\n", pInfo->name, s);
+    }
+    EvdevFreeTokens (tokens);
+    return 0;
+}
+
 evdev_option_token_t *
-EvdevTokenize (const char *option, const char *tokens, const char *first)
+EvdevTokenize (const char *option, const char *tokens)
 {
     evdev_option_token_t *head = NULL, *token = NULL, *prev = NULL;
     const char *ctmp;
+    const char *first;
     char *tmp = NULL;
     int len;
 
-    if (!first) {
-	first = strchr (option, tokens[0]);
-    }
+    first = strchr (option, tokens[0]);
 
     while (1) {
 	if (first)
@@ -145,12 +182,11 @@ EvdevTokenize (const char *option, const char *tokens, const char *first)
 	if (tokens[1]) {
 	    ctmp = strchr (tmp, tokens[1]);
 	    if (ctmp) {
-		token->is_chain = 1;
-		token->u.chain = EvdevTokenize (tmp, tokens + 1, ctmp);
+		token->chain = EvdevTokenize (ctmp+1, tokens + 1);
 	    } else
-		token->u.str = tmp;
+		token->str = tmp;
 	} else
-	    token->u.str = tmp;
+	    token->str = tmp;
 
 	if (!first)
 	    break;
@@ -168,10 +204,9 @@ EvdevFreeTokens (evdev_option_token_t *token)
     evdev_option_token_t *next;
 
     while (token) {
-	if (token->is_chain)
-	    EvdevFreeTokens (token->u.chain);
-	else
-	    free (token->u.str);
+	if (token->chain)
+	    EvdevFreeTokens (token->chain);
+	free (token->str);
 	next = token->next;
 	free (token);
 	token = next;
@@ -191,7 +226,7 @@ EvdevReadInput(InputInfoPtr pInfo)
         if (len != sizeof(ev)) {
             /* The kernel promises that we always only read a complete
              * event, so len != sizeof ev is an error. */
-            xf86Msg(X_ERROR, "Read error: %s (%d, %d != %ld)\n",
+            xf86Msg(X_ERROR, "Read error: %s (%d, %d != %zd)\n",
 		    strerror(errno), errno, len, sizeof (ev));
 	    if (len < 0)
             {
@@ -412,8 +447,8 @@ EvdevPreInit(InputDriverPtr drv, IDevPtr dev, int flags)
 
 
     /* XXX: Note, the order of these is (maybe) still important. */
-    EvdevAxesNew0 (pInfo);
     EvdevBtnNew0 (pInfo);
+    EvdevAxesNew0 (pInfo);
 
     EvdevAxesNew1 (pInfo);
     EvdevBtnNew1 (pInfo);
diff --git a/src/evdev.h b/src/evdev.h
index cfce03b..d14bba3 100644
--- a/src/evdev.h
+++ b/src/evdev.h
@@ -80,7 +80,7 @@
 #define AXES_MAX	ABS_MAX
 
 
-#define EVDEV_MAXBUTTONS	96
+#define BTN_MAX	96
 
 struct _evdevDevice;
 
@@ -104,16 +104,15 @@ typedef struct {
     unsigned long	ff[NBITS(FF_MAX)];
 } evdevBitsRec, *evdevBitsPtr;
 
-#define EV_BTN_IGNORE_X   	1
-#define EV_BTN_IGNORE_EVDEV   	2
-#define EV_BTN_IGNORE_MAP	(EV_BTN_IGNORE_X | EV_BTN_IGNORE_EVDEV)
+#define EV_BTN_B_PRESENT   	(1<<0)
 
 typedef struct {
     int		real_buttons;
     int		buttons;
-    CARD8	ignore[EVDEV_MAXBUTTONS];
-    CARD8	map[EVDEV_MAXBUTTONS];
-    void	(*callback[EVDEV_MAXBUTTONS])(InputInfoPtr pInfo, int button, int value);
+    int		b_flags[BTN_MAX];
+    void	*b_map_data[ABS_MAX];
+    evdev_map_func_f b_map[BTN_MAX];
+    void	(*callback[BTN_MAX])(InputInfoPtr pInfo, int button, int value);
 } evdevBtnRec, *evdevBtnPtr;
 
 #define EV_ABS_V_PRESENT	(1<<0)
@@ -132,8 +131,6 @@ typedef struct {
     int		axes;
     int		v[ABS_MAX];
     int		v_flags[ABS_MAX];
-    int		v_min[ABS_MAX];
-    int		v_max[ABS_MAX];
     void	*v_map_data[ABS_MAX];
     evdev_map_func_f v_map[ABS_MAX];
 } evdevAbsRec, *evdevAbsPtr;
@@ -233,11 +230,8 @@ void EvdevKeyProcess (InputInfoPtr pInfo, struct input_event *ev);
  */
 
 typedef struct evdev_option_token_s {
-    int is_chain;
-    union {
-	const char *str;
-	struct evdev_option_token_s *chain;
-    } u;
+    const char *str;
+    struct evdev_option_token_s *chain;
     struct evdev_option_token_s *next;
 } evdev_option_token_t;
 
@@ -247,7 +241,7 @@ typedef Bool (*evdev_parse_map_func_f)(InputInfoPtr pInfo,
 	evdev_option_token_t *option,
 	void **map_data, evdev_map_func_f *map_func);
 
-evdev_option_token_t *EvdevTokenize (const char *option, const char *tokens, const char *first);
+evdev_option_token_t *EvdevTokenize (const char *option, const char *tokens);
 void EvdevFreeTokens (evdev_option_token_t *token);
 Bool EvdevParseMapToRelAxis (InputInfoPtr pInfo,
 	const char *name,
@@ -257,6 +251,16 @@ Bool EvdevParseMapToAbsAxis (InputInfoPtr pInfo,
 	const char *name,
 	evdev_option_token_t *option,
 	void **map_data, evdev_map_func_f *map_func);
+Bool
+EvdevParseMapToButton (InputInfoRec *pInfo,
+	const char *name,
+	evdev_option_token_t *option,
+	void **map_data, evdev_map_func_f *map_func);
+Bool
+EvdevParseMapToButtons (InputInfoRec *pInfo,
+	const char *name,
+	evdev_option_token_t *option,
+	void **map_data, evdev_map_func_f *map_func);
 
 typedef struct {
     char *name;
@@ -264,5 +268,6 @@ typedef struct {
 } evdev_map_parsers_t;
 
 extern evdev_map_parsers_t evdev_map_parsers[];
+Bool EvdevParseMapOption (InputInfoRec *pInfo, char *option, char *def, void **map_data, evdev_map_func_f *map_func);
 
 #endif	/* __EVDEV_H */
diff --git a/src/evdev_axes.c b/src/evdev_axes.c
index 1443495..4abab46 100644
--- a/src/evdev_axes.c
+++ b/src/evdev_axes.c
@@ -163,36 +163,6 @@ EvdevAxesMapAxis (InputInfoPtr pInfo, int value, int mode, void *map_data)
     axes->flags |= EV_AXES_UPDATED;
 }
 
-#if 0
-typedef struct {
-    int button_plus;
-    int button_minus;
-    int step;
-    int count;
-} AxisMapButton_t;
-
-void
-EvdevAxesMapButton (InputInfoPtr pInfo, int value, void *map_data)
-{
-    AxisMapButton_t *map = map_data;
-    int i;
-
-    // FIXME: Scream loudly, this is bad.
-    if (!map)
-	return;
-
-    map->count += value;
-    i = map->count / map->step;
-    if (i) {
-	map->count -= i * map->step;
-	if (i > 0)
-	    EvdevBtnPostFakeClicks (pInfo, map->button_plus, i);
-	else
-	    EvdevBtnPostFakeClicks (pInfo, map->button_minus, -i);
-    }
-}
-#endif
-
 static Bool
 EvdevParseRelOptions (InputInfoPtr pInfo, const char *name, evdev_option_token_t *option, int *flags)
 {
@@ -200,14 +170,10 @@ EvdevParseRelOptions (InputInfoPtr pInfo, const char *name, evdev_option_token_t
 	return 0;
 
     for (; option; option = option->next) {
-	// XXX: Impossible.
-	if (option->is_chain)
-	    continue;
-
-	if (!strcasecmp (option->u.str, "invert"))
+	if (!strcasecmp (option->str, "invert"))
 	    *flags |= EV_REL_V_INVERT;
 	else
-	    xf86Msg(X_ERROR, "%s: %s unknown relative option '%s'.\n", pInfo->name, name, option->u.str);
+	    xf86Msg(X_ERROR, "%s: %s unknown relative option '%s'.\n", pInfo->name, name, option->str);
 
     }
     *flags |= EV_REL_V_PRESENT;
@@ -222,20 +188,16 @@ EvdevParseAbsOptions (InputInfoPtr pInfo, const char *name, evdev_option_token_t
 	return 0;
 
     for (; option; option = option->next) {
-	// XXX: Impossible.
-	if (option->is_chain)
-	    continue;
-
-	if (!strcasecmp (option->u.str, "invert"))
+	if (!strcasecmp (option->str, "invert"))
 	    *flags |= EV_ABS_V_INVERT;
-	else if (!strcasecmp (option->u.str, "use_touch"))
+	else if (!strcasecmp (option->str, "use_touch"))
 	    *flags |= EV_ABS_V_USE_TOUCH;
-	else if (!strcasecmp (option->u.str, "mode_auto"))
+	else if (!strcasecmp (option->str, "mode_auto"))
 	    *flags |= EV_ABS_V_M_AUTO;
-	else if (!strcasecmp (option->u.str, "mode_rel"))
+	else if (!strcasecmp (option->str, "mode_rel"))
 	    *flags |= EV_ABS_V_M_REL;
 	else
-	    xf86Msg(X_ERROR, "%s: %s unknown absolute option '%s'.\n", pInfo->name, name, option->u.str);
+	    xf86Msg(X_ERROR, "%s: %s unknown absolute option '%s'.\n", pInfo->name, name, option->str);
 
     }
     *flags |= EV_ABS_V_PRESENT;
@@ -254,14 +216,11 @@ EvdevParseMapToRelAxis (InputInfoPtr pInfo,
     evdevAxesPtr axes = state->axes;
     long i;
 
-    if (!option || option->is_chain)
-	return 0;
-
     errno = 0;
-    i = strtol (option->u.str, NULL, 0);
+    i = strtol (option->str, NULL, 0);
     if (errno) {
 	for (i = 0; rel_axis_names[i]; i++) {
-	    if (!strcmp (option->u.str, rel_axis_names[i]))
+	    if (!strcmp (option->str, rel_axis_names[i]))
 		break;
 	}
 	if (!rel_axis_names[i])
@@ -292,20 +251,15 @@ EvdevParseMapToAbsAxis (InputInfoPtr pInfo,
     evdevAxesPtr axes = state->axes;
     long i;
 
-    if (!option || option->is_chain) {
-	xf86Msg (X_ERROR, "%s: %s: No option/option is chain.\n", pInfo->name, name);
-	return 0;
-    }
-
     errno = 0;
-    i = strtol (option->u.str, NULL, 0);
+    i = strtol (option->str, NULL, 0);
     if (errno) {
 	for (i = 0; abs_axis_names[i]; i++) {
-	    if (!strcmp (option->u.str, abs_axis_names[i]))
+	    if (!strcmp (option->str, abs_axis_names[i]))
 		break;
 	}
 	if (!abs_axis_names[i]) {
-	    xf86Msg (X_ERROR, "%s: %s: No axis named '%s'.\n", pInfo->name, name, option->u.str);
+	    xf86Msg (X_ERROR, "%s: %s: No axis named '%s'.\n", pInfo->name, name, option->str);
 	    return 0;
 	}
     }
@@ -320,28 +274,28 @@ EvdevParseMapToAbsAxis (InputInfoPtr pInfo,
     }
 
     option = option->next;
-    if (!option || option->is_chain) {
+    if (!option) {
 	xf86Msg (X_ERROR, "%s: %s: No min.\n", pInfo->name, name);
 	return 0;
     }
 
     errno = 0;
-    axes->v_min[i] = strtol (option->u.str, NULL, 0);
+    axes->v_min[i] = strtol (option->str, NULL, 0);
     if (errno) {
-	xf86Msg (X_ERROR, "%s: %s: Unable to parse '%s' as min. (%s)\n", pInfo->name, name, option->u.str, strerror(errno));
+	xf86Msg (X_ERROR, "%s: %s: Unable to parse '%s' as min. (%s)\n", pInfo->name, name, option->str, strerror(errno));
 	return 0;
     }
 
     option = option->next;
-    if (!option || option->is_chain) {
+    if (!option) {
 	xf86Msg (X_ERROR, "%s: %s: No max.\n", pInfo->name, name);
 	return 0;
     }
 
     errno = 0;
-    axes->v_max[i] = strtol (option->u.str, NULL, 0);
+    axes->v_max[i] = strtol (option->str, NULL, 0);
     if (errno) {
-	xf86Msg (X_ERROR, "%s: %s: Unable to parse '%s' as max. (%s)\n", pInfo->name, name, option->u.str, strerror(errno));
+	xf86Msg (X_ERROR, "%s: %s: Unable to parse '%s' as max. (%s)\n", pInfo->name, name, option->str, strerror(errno));
 	return 0;
     }
 
@@ -620,8 +574,10 @@ EvdevAxesAbsProcess (InputInfoPtr pInfo, struct input_event *ev)
     if ((v_flags & EV_ABS_V_USE_TOUCH) && !(state->abs->flags & EV_ABS_TOUCH))
 	return;
 
+#if 0
     if (v_flags & EV_ABS_V_INVERT)
-	value = state->abs->v_max[ev->code] - value;
+	value = -value;
+#endif
 
     if (v_flags & EV_ABS_V_M_REL)
 	is_rel = 1;
@@ -683,7 +639,7 @@ EvdevAxisAbsNew(InputInfoPtr pInfo)
     struct input_absinfo absinfo;
     char option[128], value[128];
     const char *s;
-    int i, j, k, real_axes;
+    int i, j, real_axes;
     evdev_option_token_t *tokens;
 
     real_axes = 0;
@@ -714,21 +670,8 @@ EvdevAxisAbsNew(InputInfoPtr pInfo)
 
 	snprintf(option, sizeof(option), "Abs%sMapTo", abs_axis_names[i]);
 	snprintf(value, sizeof(value), "AbsAxis %d %d %d", j, absinfo.minimum, absinfo.maximum);
-	s = xf86SetStrOption(pInfo->options, option, value);
-	tokens = EvdevTokenize (s, " =", NULL); 
-	if (!tokens->is_chain && tokens->next) {
-	    for (k = 0; evdev_map_parsers[k].name; k++) {
-		if (!strcasecmp (tokens->u.str, evdev_map_parsers[k].name)) {
-		    if (!evdev_map_parsers[k].func (pInfo, option, tokens->next, &abs->v_map_data[i], &abs->v_map[i]))
-			xf86Msg (X_ERROR, "%s: Unable to parse '%s' as a map specifier (%s).\n", pInfo->name, s, evdev_map_parsers[k].name);
-		    break;
-		}
-	    }
 
-	    if (!evdev_map_parsers[k].name)
-		xf86Msg (X_ERROR, "%s: Unable to find parser for '%s' as a map specifier.\n", pInfo->name, s);
-	}
-	EvdevFreeTokens (tokens);
+	EvdevParseMapOption (pInfo, option, value, &abs->v_map_data[i], &abs->v_map[i]);
 
 	snprintf(option, sizeof(option), "Abs%sOptions", abs_axis_names[i]);
 	if (i == ABS_X || i == ABS_Y)
@@ -736,7 +679,7 @@ EvdevAxisAbsNew(InputInfoPtr pInfo)
 	else
 	    s = xf86SetStrOption(pInfo->options, option, "");
 	if (s[0]) {
-	    tokens = EvdevTokenize (s, " =", NULL); 
+	    tokens = EvdevTokenize (s, " "); 
 	    if (!EvdevParseAbsOptions (pInfo, option, tokens, &abs->v_flags[i]))
 		xf86Msg (X_ERROR, "%s: Unable to parse '%s' as absolute options.\n", pInfo->name, s);
 	    EvdevFreeTokens (tokens);
@@ -803,9 +746,9 @@ EvdevAxisRelNew(InputInfoPtr pInfo)
 {
     evdevDevicePtr pEvdev = pInfo->private;
     evdevStatePtr state = &pEvdev->state;
-    evdevRelPtr rel = state->rel;
+    evdevRelPtr rel;
     char *s, option[128], value[128];
-    int i, j, k, real_axes;
+    int i, j, real_axes;
     evdev_option_token_t *tokens;
 
     real_axes = 0;
@@ -816,7 +759,7 @@ EvdevAxisRelNew(InputInfoPtr pInfo)
     if (!real_axes && (!state->abs || state->abs->axes < 2))
 	return !Success;
 
-    state->rel = Xcalloc (sizeof (evdevRelRec));
+    state->rel = rel = Xcalloc (sizeof (evdevRelRec));
 
     xf86Msg(X_INFO, "%s: Found %d relative axes.\n", pInfo->name,
 	    real_axes);
@@ -837,27 +780,13 @@ EvdevAxisRelNew(InputInfoPtr pInfo)
 	    snprintf(value, sizeof(value), "Buttons 6 7 1");
 	else
 	    snprintf(value, sizeof(value), "RelAxis %d", j);
-	s = xf86SetStrOption(pInfo->options, option, value);
-	tokens = EvdevTokenize (s, " =", NULL); 
-	if (!tokens->is_chain && tokens->next) {
-	    for (k = 0; evdev_map_parsers[k].name; k++) {
-		if (!strcasecmp (tokens->u.str, evdev_map_parsers[k].name)) {
-		    if (!evdev_map_parsers[k].func (pInfo, option, tokens->next, &rel->v_map_data[i], &rel->v_map[i]))
-			xf86Msg (X_ERROR, "%s: Unable to parse '%s' as a map specifier.\n", pInfo->name, s);
-		    break;
-		}
-
-	    }
 
-	    if (!evdev_map_parsers[k].name)
-		xf86Msg (X_ERROR, "%s: Unable to find parser for '%s' as a map specifier.\n", pInfo->name, s);
-	}
-	EvdevFreeTokens (tokens);
+	EvdevParseMapOption (pInfo, option, value, &rel->v_map_data[i], &rel->v_map[i]);
 
 	snprintf(option, sizeof(option), "Rel%sOptions", rel_axis_names[i]);
 	s = xf86SetStrOption(pInfo->options, option, "");
 	if (s[0]) {
-	    tokens = EvdevTokenize (s, " =", NULL); 
+	    tokens = EvdevTokenize (s, " "); 
 	    if (!EvdevParseRelOptions (pInfo, option, tokens, &rel->v_flags[i]))
 		xf86Msg (X_ERROR, "%s: Unable to parse '%s' as relative options.\n", pInfo->name, s);
 	    EvdevFreeTokens (tokens);
diff --git a/src/evdev_btn.c b/src/evdev_btn.c
index 3d52e9f..63a6abf 100644
--- a/src/evdev_btn.c
+++ b/src/evdev_btn.c
@@ -151,7 +151,7 @@ static char *button_names[] = {
 };
 
 void
-EvdevBtnPostFakeClicks(InputInfoPtr pInfo, int button, int count)
+EvdevBtnPostFakeClicks(InputInfoRec *pInfo, int button, int count)
 {
     int i;
 
@@ -161,11 +161,140 @@ EvdevBtnPostFakeClicks(InputInfoPtr pInfo, int button, int count)
     }
 }
 
+typedef struct {
+    int button_plus;
+    int button_minus;
+    int step;
+    int count;
+} MapButtons_t;
+
+static void
+EvdevMapButton (InputInfoRec *pInfo, int value, int mode, void *map_data)
+{
+    long button = (long) map_data;
+
+    xf86PostButtonEvent (pInfo->dev, 0, button, value, 0, 0);
+}
+
+Bool
+EvdevParseMapToButton (InputInfoRec *pInfo,
+	const char *name,
+	evdev_option_token_t *option,
+	void **map_data, evdev_map_func_f *map_func)
+{
+    evdevDeviceRec *pEvdev = pInfo->private;
+    evdevStateRec *state = &pEvdev->state;
+    evdevBtnRec *btn = state->btn;
+    int button;
+
+    errno = 0;
+    button = strtol (option->str, NULL, 0);
+    if (errno)
+	button = EvdevBtnFind (pInfo, option->str);
+    if ((button < 0) || (button > BTN_MAX)) {
+	xf86Msg (X_ERROR, "%s: %s: Button %d out of range.\n", pInfo->name, name, button);
+	return 0;
+    }
+
+    if (btn->b_flags[button] & EV_BTN_B_PRESENT) {
+	xf86Msg (X_ERROR, "%s: %s: Button %d already claimed.\n", pInfo->name, name, button);
+	return 0;
+    }
+
+    btn->b_flags[button] = EV_BTN_B_PRESENT;
+
+    *map_data = (void *) button;
+    *map_func = EvdevMapButton;
+
+    return 1;
+}
+
+static void
+EvdevMapButtons (InputInfoRec *pInfo, int value, int mode, void *map_data)
+{
+    MapButtons_t *map = map_data;
+    int i;
+
+    if (!map)
+	return;
+
+    map->count += value;
+    i = map->count / map->step;
+    if (i) {
+	map->count -= i * map->step;
+	if (i > 0)
+	    EvdevBtnPostFakeClicks (pInfo, map->button_plus, i);
+	else
+	    EvdevBtnPostFakeClicks (pInfo, map->button_minus, -i);
+    }
+}
+
+Bool
+EvdevParseMapToButtons (InputInfoRec *pInfo,
+	const char *name,
+	evdev_option_token_t *option,
+	void **map_data, evdev_map_func_f *map_func)
+{
+    evdevDeviceRec *pEvdev = pInfo->private;
+    evdevStateRec *state = &pEvdev->state;
+    evdevBtnRec *btn = state->btn;
+    int btn_plus, btn_minus;
+    MapButtons_t *map;
+
+    errno = 0;
+    btn_plus = strtol (option->str, NULL, 0);
+    if (errno)
+	btn_plus = EvdevBtnFind (pInfo, option->str);
+    if ((btn_plus < 0) || (btn_plus > BTN_MAX)) {
+	xf86Msg (X_ERROR, "%s: %s: Button %d out of range.\n", pInfo->name, name, btn_plus);
+	return 0;
+    }
+
+    if (btn->b_flags[btn_plus] & EV_BTN_B_PRESENT) {
+	xf86Msg (X_ERROR, "%s: %s: Button %d already claimed.\n", pInfo->name, name, btn_plus);
+	return 0;
+    }
+
+    option = option->next;
+    if (!option) {
+	xf86Msg (X_ERROR, "%s: %s: No button minus.\n", pInfo->name, name);
+	return 0;
+    }
+
+    errno = 0;
+    btn_minus = strtol (option->str, NULL, 0);
+    if (errno)
+	btn_minus = EvdevBtnFind (pInfo, option->str);
+    if ((btn_minus < 0) || (btn_minus > BTN_MAX)) {
+	xf86Msg (X_ERROR, "%s: %s: Button %d out of range.\n", pInfo->name, name, btn_minus);
+	return 0;
+    }
+
+    if (btn->b_flags[btn_minus] & EV_BTN_B_PRESENT) {
+	xf86Msg (X_ERROR, "%s: %s: Button %d already claimed.\n", pInfo->name, name, btn_minus);
+	return 0;
+    }
+    errno = 0;
+
+    btn->b_flags[btn_plus] = EV_BTN_B_PRESENT;
+    btn->b_flags[btn_minus] = EV_BTN_B_PRESENT;
+
+    map = calloc(1, sizeof (MapButtons_t));
+    map->button_plus = btn_plus;
+    map->button_minus = btn_minus;
+    map->step = 1;
+
+    *map_data = (void *) map;
+    *map_func = EvdevMapButtons;
+
+    return 1;
+}
+
 int
-EvdevBtnInit (DeviceIntPtr device)
+EvdevBtnInit (DeviceIntRec *device)
 {
-    InputInfoPtr pInfo = device->public.devicePrivate;
-    evdevDevicePtr pEvdev = pInfo->private;
+    InputInfoRec *pInfo = device->public.devicePrivate;
+    evdevDeviceRec *pEvdev = pInfo->private;
     CARD8 *map;
     int i;
 
@@ -191,10 +320,10 @@ EvdevBtnInit (DeviceIntPtr device)
 }
 
 int
-EvdevBtnOn (DeviceIntPtr device)
+EvdevBtnOn (DeviceIntRec *device)
 {
-    InputInfoPtr pInfo = device->public.devicePrivate;
-    evdevDevicePtr pEvdev = pInfo->private;
+    InputInfoRec *pInfo = device->public.devicePrivate;
+    evdevDeviceRec *pEvdev = pInfo->private;
     int i, blocked;
 
     if (!pEvdev->state.btn)
@@ -209,161 +338,74 @@ EvdevBtnOn (DeviceIntPtr device)
 }
 
 int
-EvdevBtnOff (DeviceIntPtr device)
+EvdevBtnOff (DeviceIntRec *device)
 {
     return Success;
 }
 
-#if 1
-/*
- * Warning, evil lives here.
- */
-static void
-EvdevBtnCalcRemap (InputInfoPtr pInfo)
-{
-    evdevDevicePtr pEvdev = pInfo->private;
-    evdevStatePtr state = &pEvdev->state;
-    evdevBtnPtr btn = state->btn;
-    int i, j, base, clear, fake, bit;
-
-    for (i = 0, base = 1, fake = 0; i < pEvdev->state.btn->real_buttons; i++) {
-#if 0
-	if (state->rel) {
-	    do {
-		clear = 1;
-		for (j = 0; j < REL_MAX; j++) {
-		    if (state->rel->btnMap[j][0] == (i + base)) {
-			base++;
-			clear = 0;
-			break;
-		    }
-		    if (state->rel->btnMap[j][1] == (i + base)) {
-			base++;
-			clear = 0;
-			break;
-		    }
-		}
-	    } while (!clear);
-	}
-#endif
-
-	if (!fake && base != 1)
-	    fake = i;
-
-	/*
-	 * See if the button is ignored for mapping purposes.
-	 */
-	if (btn->ignore[i] & EV_BTN_IGNORE_MAP)
-	    continue;
 
-	/*
-	 * See if the button actually exists, otherwise don't bother.
-	 */
-	bit = i;
-	bit += BTN_MISC;
-	if ((bit >= BTN_MOUSE) && (bit < BTN_JOYSTICK)) {
-	    bit -= BTN_MOUSE - BTN_MISC;
-	} else if ((bit >= BTN_MISC) && (bit < BTN_MOUSE)) {
-	    bit += BTN_MOUSE - BTN_MISC;
-	}
-	if (!test_bit (bit, pEvdev->bits.key))
-	    continue;
-
-	btn->buttons = btn->map[i] = i + base;
-    }
+int
+EvdevBtnNew0(InputInfoRec *pInfo)
+{
+    evdevDeviceRec *pEvdev = pInfo->private;
+    evdevStateRec *state = &pEvdev->state;
 
-    if ((!fake || fake >= 3) &&
-	    test_bit(BTN_RIGHT, pEvdev->bits.key) &&
-	    test_bit(BTN_MIDDLE, pEvdev->bits.key)) {
-	base = btn->map[1];
-	btn->map[1] = btn->map[2];
-	btn->map[2] = base;
-    }
+    state->btn = Xcalloc (sizeof (evdevBtnRec));
 
-#if 0
-    if (state->rel) {
-	for (i = 0; i < REL_MAX; i++) {
-	    if (state->rel->btnMap[i][0] > btn->buttons)
-		btn->buttons = state->rel->btnMap[i][0];
-	    if (state->rel->btnMap[i][1] > btn->buttons)
-		btn->buttons = state->rel->btnMap[i][1];
-	}
-    }
-#endif
+    return Success;
 }
-#endif
-
 
 int
-EvdevBtnNew0(InputInfoPtr pInfo)
+EvdevBtnNew1(InputInfoRec *pInfo)
 {
-    evdevDevicePtr pEvdev = pInfo->private;
-    evdevStatePtr state = &pEvdev->state;
-    char option[64];
-    int i, j, btn;
+    evdevDeviceRec *pEvdev = pInfo->private;
+    evdevStateRec *state = &pEvdev->state;
+    evdevBtnRec *btn = state->btn;
+    char option[128], value[128];
+    int i, b, j;
 
-    state->btn = Xcalloc (sizeof (evdevBtnRec));
+    if (!btn)
+	return !Success;
 
-    /*
-     * XXX: This is evil.
-     * For reasons related to handling pathological remapping cases, and
-     * differences between HID and X, pretend a middle button exists
-     * whenever a right button exists.
-     */
-    if (test_bit (BTN_RIGHT, pEvdev->bits.key))
-	set_bit (BTN_MIDDLE, pEvdev->bits.key);
-
-    for (i = BTN_MISC; i < (KEY_OK - 1); i++) {
-	btn = i;
-	if ((btn >= BTN_MOUSE) && (btn < BTN_JOYSTICK)) {
-	    btn -= BTN_MOUSE - BTN_MISC;
-	} else if ((btn >= BTN_MISC) && (btn < BTN_MOUSE)) {
-	    btn += BTN_MOUSE - BTN_MISC;
-	}
-	btn -= BTN_MISC;
-
-	snprintf(option, sizeof(option), "%sIgnoreX", button_names[btn]);
-	if (i >= BTN_DIGI && i < BTN_WHEEL)
-	    j = xf86SetIntOption(pInfo->options, option, 1);
-	else
-	    j = xf86SetIntOption(pInfo->options, option, 0);
-	if (j)
-	    state->btn->ignore[btn] |= EV_BTN_IGNORE_X;
-
-	snprintf(option, sizeof(option), "%sIgnoreEvdev", button_names[btn]);
-	j = xf86SetIntOption(pInfo->options, option, 0);
-	if (j) {
-	    state->btn->ignore[btn] |= EV_BTN_IGNORE_EVDEV;
+    for (i = 0; i < BTN_MAX; i++) {
+	b = i + BTN_MISC;
+	if (!test_bit (b, pEvdev->bits.key))
 	    continue;
-	}
 
-	if (test_bit (i, pEvdev->bits.key))
-	    state->btn->real_buttons = btn + 1;
+	btn->real_buttons++;
+
+	snprintf(option, sizeof(option), "Button%sMapTo", button_names[i]);
+	if (b >= BTN_DIGI && b < BTN_WHEEL)
+	    snprintf (value, sizeof (value), "null");
+	else if (b == BTN_RIGHT)
+	    snprintf (value, sizeof (value), "Button 3");
+	else if (b == BTN_MIDDLE)
+	    snprintf (value, sizeof (value), "Button 2");
+	else if (b >= BTN_MOUSE && b < BTN_JOYSTICK)
+	    snprintf (value, sizeof (value), "Button %d", 1 + i - (BTN_MOUSE - BTN_MISC));
+	else if (b >= BTN_MISC && b < BTN_MOUSE)
+	    snprintf (value, sizeof (value), "Button %d", 1 + i + (BTN_MOUSE - BTN_MISC));
+	else if (btn->b_flags[i] & EV_BTN_B_PRESENT) {
+	    for (j = i; j < BTN_MAX; j++)
+		if (!(btn->b_flags[j] & EV_BTN_B_PRESENT)) {
+		    snprintf (value, sizeof (value), "Button %d", j + 1);
+		    break;
+		}
+	} else
+	    snprintf (value, sizeof (value), "Button %d", i + 1);
+
+	EvdevParseMapOption (pInfo, option, value, &btn->b_map_data[i], &btn->b_map[i]);
     }
 
     if (state->btn->real_buttons)
         xf86Msg(X_INFO, "%s: Found %d mouse buttons\n", pInfo->name, state->btn->real_buttons);
 
-    return Success;
-}
-
-int
-EvdevBtnNew1(InputInfoPtr pInfo)
-{
-    evdevDevicePtr pEvdev = pInfo->private;
-    evdevStatePtr state = &pEvdev->state;
-
-    if (!state->btn)
-	return !Success;
-
-#if 1
-    EvdevBtnCalcRemap (pInfo);
-#else
-    state->btn->buttons = state->btn->real_buttons;
-#endif
+    for (i = 0; i < BTN_MAX; i++)
+	if (btn->b_flags[i] & EV_BTN_B_PRESENT)
+	    btn->buttons = i + 1;
 
     if (state->btn->buttons)
-	xf86Msg(X_INFO, "%s: Configured %d mouse buttons\n", pInfo->name, state->btn->buttons);
+	xf86Msg(X_INFO, "%s: Configured %d mouse buttons.\n", pInfo->name, state->btn->buttons);
     else {
 	Xfree (state->btn);
 	state->btn = NULL;
@@ -381,10 +423,10 @@ EvdevBtnNew1(InputInfoPtr pInfo)
 }
 
 void
-EvdevBtnProcess (InputInfoPtr pInfo, struct input_event *ev)
+EvdevBtnProcess (InputInfoRec *pInfo, struct input_event *ev)
 {
-    evdevDevicePtr pEvdev = pInfo->private;
-    evdevStatePtr state = &pEvdev->state;
+    evdevDeviceRec *pEvdev = pInfo->private;
+    evdevStateRec *state = &pEvdev->state;
     int button;
 
     if (!state->btn)
@@ -392,29 +434,17 @@ EvdevBtnProcess (InputInfoPtr pInfo, struct input_event *ev)
 
     button = ev->code;
 
-    if ((ev->code >= BTN_MOUSE) && (ev->code < BTN_JOYSTICK)) {
-	button -= BTN_MOUSE - BTN_MISC;
-    } else if ((ev->code >= BTN_MISC) && (ev->code < BTN_MOUSE)) {
-	button += BTN_MOUSE - BTN_MISC;
-    }
-
     button -= BTN_MISC;
 
-    if (state->btn->ignore[button] & EV_BTN_IGNORE_EVDEV)
-	return;
-
     if (state->btn->callback[button])
 	state->btn->callback[button](pInfo, button, ev->value);
 
-    if (state->btn->ignore[button] & EV_BTN_IGNORE_X)
-	return;
-
-    button = state->btn->map[button];
-    xf86PostButtonEvent (pInfo->dev, 0, button, ev->value, 0, 0);
+    if (state->btn->b_map[button])
+	state->btn->b_map[button](pInfo, ev->value, -1, state->btn->b_map_data[button]);
 }
 
 int
-EvdevBtnFind (InputInfoPtr pInfo, const char *button)
+EvdevBtnFind (InputInfoRec *pInfo, const char *button)
 {
     int i;
 
@@ -426,19 +456,13 @@ EvdevBtnFind (InputInfoPtr pInfo, const char *button)
 }
 
 int
-EvdevBtnExists (InputInfoPtr pInfo, int button)
+EvdevBtnExists (InputInfoRec *pInfo, int button)
 {
-    evdevDevicePtr pEvdev = pInfo->private;
-
-    button += BTN_MISC;
+    evdevDeviceRec *pEvdev = pInfo->private;
 
-    xf86Msg(X_INFO, "%s: Checking button %s (%d)\n", pInfo->name, button_names[button - BTN_MISC], button);
+    xf86Msg(X_INFO, "%s: Checking button %s (%d)\n", pInfo->name, button_names[button], button);
 
-    if ((button >= BTN_MOUSE) && (button < BTN_JOYSTICK)) {
-	button -= BTN_MOUSE - BTN_MISC;
-    } else if ((button >= BTN_MISC) && (button < BTN_MOUSE)) {
-	button += BTN_MOUSE - BTN_MISC;
-    }
+    button += BTN_MISC;
 
     xf86Msg(X_INFO, "%s: Checking bit %d\n", pInfo->name, button);
     return test_bit(button, pEvdev->bits.key);
-- 
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