Implemented configurable floating scroll behavior

4 files changed, 63 insertions, 5 deletions

diff --git a/include/config.h b/include/config.h
index 8e5e33c3..6bd09151 100644
--- a/include/config.h
+++ b/include/config.h
@@ -167,10 +167,9 @@ enum edge_border_types {
 };
 
 enum floating_scroll_behavior {
-    FSB_GAPS_OUTER,     /**< Adjust outer gaps */
-    FSB_GAPS_INNER      /**< Adjust inner gaps */
-    // Note: in the future I expect to see more things you can do with the scroll
-    // wheel than maniuplating gaps
+        FSB_GAPS_OUTER,     /**< Adjust outer gaps */
+        FSB_GAPS_INNER,     /**< Adjust inner gaps */
+        FSB_CUSTOM          /**< Perform a user-defined action */
 };
 
 /**
@@ -191,7 +190,9 @@ struct sway_config {
         uint32_t floating_mod;
         uint32_t dragging_key;
         uint32_t resizing_key;
-    enum floating_scroll_behavior floating_scroll; // TODO: command to set this
+        enum floating_scroll_behavior floating_scroll;
+        char *fsb_up;
+        char *fsb_down;
         enum swayc_layouts default_orientation;
         enum swayc_layouts default_layout;
         char *font;
diff --git a/sway/commands.c b/sway/commands.c
index 9b0356c4..a4fcde78 100644
--- a/sway/commands.c
+++ b/sway/commands.c
@@ -58,6 +58,7 @@ static sway_cmd cmd_exec_always;
 static sway_cmd cmd_exit;
 static sway_cmd cmd_floating;
 static sway_cmd cmd_floating_mod;
+static sway_cmd cmd_floating_scroll;
 static sway_cmd cmd_focus;
 static sway_cmd cmd_focus_follows_mouse;
 static sway_cmd cmd_font;
@@ -705,6 +706,47 @@ static struct cmd_results *cmd_floating_mod(int argc, char **argv) {
         return cmd_results_new(CMD_SUCCESS, NULL, NULL);
 }
 
+static struct cmd_results *cmd_floating_scroll(int argc, char **argv) {
+        struct cmd_results *error = NULL;
+        if ((error = checkarg(argc, "floating_scroll", EXPECTED_AT_LEAST, 1))) {
+                return error;
+        }
+        if (!strcasecmp("behavior", argv[0])) {
+                if (argc < 2) {
+                        error = cmd_results_new(CMD_INVALID, "floating_scroll", "Insufficient parameters given");
+                        return error;
+                }
+                if (!strcasecmp("gaps_inner", argv[1])) {
+                        config->floating_scroll = FSB_GAPS_INNER;
+                } else if (!strcasecmp("gaps_outer", argv[1])) {
+                        config->floating_scroll = FSB_GAPS_OUTER;
+                } else if (!strcasecmp("custom", argv[1])) {
+                        config->floating_scroll = FSB_CUSTOM;
+                } else {
+                        error = cmd_results_new(CMD_INVALID, "floating_scroll", "Unknown behavior: '%s'", argv[1]);
+                        return error;
+                }
+        } else if (!strcasecmp("up", argv[0])) {
+                free(config->fsb_up);
+                if (argc < 2) {
+                        config->fsb_up = strdup("");
+                } else {
+                        config->fsb_up = join_args(argv + 1, argc - 1);
+                }
+        } else if (!strcasecmp("down", argv[0])) {
+                free(config->fsb_down);
+                if (argc < 2) {
+                        config->fsb_down = strdup("");
+                } else {
+                        config->fsb_down = join_args(argv + 1, argc - 1);
+                }
+        } else {
+                error = cmd_results_new(CMD_INVALID, "floating_scroll", "Unknown command: '%s'", argv[0]);
+                return error;
+        }
+        return cmd_results_new(CMD_SUCCESS, NULL, NULL);
+}
+
 static struct cmd_results *cmd_focus(int argc, char **argv) {
         if (config->reading) return cmd_results_new(CMD_FAILURE, "focus", "Can't be used in config file.");
         struct cmd_results *error = NULL;
@@ -2377,6 +2419,7 @@ static struct cmd_handler handlers[] = {
         { "exit", cmd_exit },
         { "floating", cmd_floating },
         { "floating_modifier", cmd_floating_mod },
+        { "floating_scroll", cmd_floating_scroll },
         { "focus", cmd_focus },
         { "focus_follows_mouse", cmd_focus_follows_mouse },
         { "font", cmd_font },
diff --git a/sway/config.c b/sway/config.c
index 237d8996..15aed11b 100644
--- a/sway/config.c
+++ b/sway/config.c
@@ -131,6 +131,8 @@ void free_config(struct sway_config *config) {
         list_free(config->active_bar_modifiers);
         free_flat_list(config->config_chain);
         free(config->font);
+        free(config->fsb_up);
+        free(config->fsb_down);
         free(config);
 }
 
@@ -160,6 +162,8 @@ static void config_defaults(struct sway_config *config) {
         config->dragging_key = M_LEFT_CLICK;
         config->resizing_key = M_RIGHT_CLICK;
         config->floating_scroll = FSB_GAPS_INNER;
+        config->fsb_up = strdup("");
+        config->fsb_down = strdup("");
         config->default_layout = L_NONE;
         config->default_orientation = L_NONE;
         config->font = strdup("monospace 10");
diff --git a/sway/handlers.c b/sway/handlers.c
index b82456e2..23c9985e 100644
--- a/sway/handlers.c
+++ b/sway/handlers.c
@@ -743,6 +743,16 @@ bool handle_pointer_scroll(wlc_handle view, uint32_t time, const struct wlc_modi
                                 arrange_windows(&root_container, -1, -1);
                                 break;
                         }
+                case FSB_CUSTOM:
+                        {
+                                int amount = (int)_amount[0];
+                                if (amount > 0) {
+                                        handle_command(config->fsb_up);
+                                } else if (amount < 0) {
+                                        handle_command(config->fsb_down);
+                                }
+                                break;
+                        }
                 }
         }
         return EVENT_PASSTHROUGH;