add --ignore-buttons option

include/types.h

@@ -6,11 +6,17 @@ typedef struct match_t {
     int len;
 } match_t;
 
+typedef struct ignore_buttons_t {
+    unsigned char count;
+    unsigned int *buttons;
+} ignore_buttons_t;
+
 typedef struct Config {
     long timeout;
     long jitter;
     bool exclude_root;
     bool ignore_scrolling;
+    ignore_buttons_t ignore_buttons;
     bool fork;
     bool debug;
     bool onescreen;

include/util.h

@@ -27,3 +27,5 @@
 void bail(char *message);
 
 long int parse_int(char *str);
+
+void parse_buttons_numbers(char *str, ignore_buttons_t *ignore_buttons);

man/unclutter-xfixes.man

@@ -8,7 +8,7 @@ unclutter-xfixes - rewrite of unclutter using the X11-Xfixes extension
 
 == SYNOPSIS
 
-unclutter [*--timeout* _seconds_] [*--jitter* _radius_] [*--exclude-root*] [*--ignore-scrolling*] [*--fork*|*-b*] [*--help*|*-h*] [*--version*|*-v*]
+unclutter [*--timeout* _seconds_] [*--jitter* _radius_] [*--exclude-root*] [*--ignore-scrolling*] [*--ignore-buttons* _buttons_] [*--fork*|*-b*] [*--help*|*-h*] [*--version*|*-v*]
 
 Compatibility arguments:
 
@@ -30,7 +30,11 @@ rather just the desktop background.
 
 *--ignore-scrolling*::
 Ignore mouse scroll events (buttons 4 and 5) so that scrolling doesn't unhide
-the cursor.
+the cursor. This is a shortcut for *--ignore-buttons* '4,5'.
+
+*--ignore-buttons*::
+Defines the mouse buttons which do not unhide the cursor when clicked. You can
+pass multiple button numbers by separating them with ','.
 
 *--fork*|*-b*::
 Fork unclutter to the background.

src/event.c

@@ -46,6 +46,20 @@ static void x_cb(EV_P_ ev_io *w, int revents) {
     /* Deliberately empty. */
 }
 
+static bool is_button_ignored(const XIRawEvent *data) {
+    if (config.ignore_scrolling && (data->detail == 4 || data->detail == 5)) {
+        return true;
+    }
+
+    for (int i = 0; i < config.ignore_buttons.count; ++i) {
+        if (data->detail == config.ignore_buttons.buttons[i]) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
 static void x_check_cb(EV_P_ ev_check *w, int revents) {
     XEvent ev;
     while (XPending(display) > 0) {
@@ -57,9 +71,9 @@ static void x_check_cb(EV_P_ ev_check *w, int revents) {
             continue;
         }
 
-        if (config.ignore_scrolling && cookie->evtype == XI_RawButtonPress) {
+        if (cookie->evtype == XI_RawButtonPress) {
             const XIRawEvent *data = (const XIRawEvent *) cookie->data;
-            if (data->detail == 4 || data->detail == 5) {
+            if (is_button_ignored(data)) {
                 XFreeEventData(display, cookie);
                 continue;
             }

src/unclutter.c

@@ -36,6 +36,8 @@ Config config = {
     .jitter = 0,
     .exclude_root = false,
     .ignore_scrolling = false,
+    .ignore_buttons.count = 0,
+    .ignore_buttons.buttons = NULL,
     .fork = false,
     .debug = false,
     .onescreen = false,
@@ -93,6 +95,7 @@ static void parse_args(int argc, char *argv[]) {
         { "jitter", required_argument, 0, 0 },
         { "exclude-root", no_argument, 0, 0 },
         { "ignore-scrolling", no_argument, 0, 0 },
+        { "ignore-buttons", required_argument, 0, 0 },
         { "fork", no_argument, 0, 'b' },
         { "version", no_argument, 0, 'v' },
         { "help", no_argument, 0, 'h' },
@@ -142,6 +145,9 @@ static void parse_args(int argc, char *argv[]) {
                 } else if (OPT_NAME_IS("ignore-scrolling")) {
                     config.ignore_scrolling = true;
                     break;
+                } else if (OPT_NAME_IS("ignore-buttons")) {
+                    parse_buttons_numbers(optarg, &config.ignore_buttons);
+                    break;
                 } else if (OPT_NAME_IS("debug")) {
                     config.debug = true;
                     break;
@@ -185,7 +191,7 @@ static void parse_args(int argc, char *argv[]) {
 }
 
 static void print_usage(char *argv[]) {
-    fprintf(stderr, "Usage: %s [--timeout <n>] [--jitter <radius>] [--exclude-root] [--ignore-scrolling] [-b|--fork] [-v|--version] [-h|--help]", argv[0]);
+    fprintf(stderr, "Usage: %s [--timeout <n>] [--jitter <radius>] [--exclude-root] [--ignore-scrolling] [--ignore-buttons <buttons>] [-b|--fork] [-v|--version] [-h|--help]", argv[0]);
     fprintf(stderr, "\n");
     exit(EXIT_FAILURE);
 }

src/util.c

@@ -17,3 +17,32 @@ long parse_int(char *str) {
 
     return parsed;
 }
+
+void parse_buttons_numbers(char *str, ignore_buttons_t *ignore_buttons) {
+    char *button = strtok(str, ",");
+    while (button != NULL) {
+        long number = atol(button);
+        button = strtok(NULL, ",");
+        if (number < 0 || number > UINT_MAX) {
+            continue;
+        }
+
+        ignore_buttons->count++;
+        if (ignore_buttons->count == UCHAR_MAX) {
+            bail("Too much buttons numbers");
+        }
+        unsigned int *buttons = (unsigned int *)realloc(ignore_buttons->buttons,
+            ignore_buttons->count * sizeof(unsigned int));
+        if (buttons == NULL) {
+            free(ignore_buttons->buttons);
+            bail("Cannot reallocate memory for ignore-buttons");
+        } else {
+            ignore_buttons->buttons = buttons;
+        }
+        ignore_buttons->buttons[ignore_buttons->count - 1] = number;
+    }
+
+    if (!ignore_buttons->count) {
+        bail("Amount of buttons to ignore = 0");
+    }
+}