1 files changed, 166 insertions, 0 deletions

diff --git a/sway/commands/gesture.c b/sway/commands/gesture.c
new file mode 100644
index 00000000..d4442cc3
--- /dev/null
+++ b/sway/commands/gesture.c
@@ -0,0 +1,166 @@
+#define _POSIX_C_SOURCE 200809L
+#include "sway/config.h"
+
+#include "gesture.h"
+#include "log.h"
+#include "stringop.h"
+#include "sway/commands.h"
+
+void free_gesture_binding(struct sway_gesture_binding *binding) {
+        if (!binding) {
+                return;
+        }
+        free(binding->input);
+        free(binding->command);
+        free(binding);
+}
+
+/**
+ * Returns true if the bindings have the same gesture type, direction, etc
+ */
+static bool binding_gesture_equal(struct sway_gesture_binding *binding_a,
+                                                                  struct sway_gesture_binding *binding_b) {
+        if (strcmp(binding_a->input, binding_b->input) != 0) {
+                return false;
+        }
+
+        if (!gesture_equal(&binding_a->gesture, &binding_b->gesture)) {
+                return false;
+        }
+
+        if ((binding_a->flags & BINDING_EXACT) !=
+                (binding_b->flags & BINDING_EXACT)) {
+                return false;
+        }
+        return true;
+}
+
+/**
+ * Add gesture binding to config
+ */
+static struct cmd_results *gesture_binding_add(
+                struct sway_gesture_binding *binding,
+                const char *gesturecombo, bool warn) {
+        list_t *mode_bindings = config->current_mode->gesture_bindings;
+        // overwrite the binding if it already exists
+        bool overwritten = false;
+        for (int i = 0; i < mode_bindings->length; ++i) {
+                struct sway_gesture_binding *config_binding = mode_bindings->items[i];
+                if (binding_gesture_equal(binding, config_binding)) {
+                        sway_log(SWAY_INFO, "Overwriting binding '%s' to `%s` from `%s`",
+                                        gesturecombo, binding->command, config_binding->command);
+                        if (warn) {
+                                config_add_swaynag_warning("Overwriting binding"
+                                                "'%s' to `%s` from `%s`",
+                                                gesturecombo, binding->command,
+                                                config_binding->command);
+                        }
+                        free_gesture_binding(config_binding);
+                        mode_bindings->items[i] = binding;
+                        overwritten = true;
+                }
+        }
+
+        if (!overwritten) {
+                list_add(mode_bindings, binding);
+                sway_log(SWAY_DEBUG, "bindgesture - Bound %s to command `%s`",
+                                gesturecombo, binding->command);
+        }
+
+        return cmd_results_new(CMD_SUCCESS, NULL);
+}
+
+/**
+ * Remove gesture binding from config
+ */
+static struct cmd_results *gesture_binding_remove(
+                struct sway_gesture_binding *binding, const char *gesturecombo) {
+        list_t *mode_bindings = config->current_mode->gesture_bindings;
+        for (int i = 0; i < mode_bindings->length; ++i) {
+                struct sway_gesture_binding *config_binding = mode_bindings->items[i];
+                if (binding_gesture_equal(binding, config_binding)) {
+                        free_gesture_binding(config_binding);
+                        free_gesture_binding(binding);
+                        list_del(mode_bindings, i);
+                        sway_log(SWAY_DEBUG, "unbindgesture - Unbound %s gesture",
+                                        gesturecombo);
+                        return cmd_results_new(CMD_SUCCESS, NULL);
+                }
+        }
+
+        free_gesture_binding(binding);
+        return cmd_results_new(CMD_FAILURE, "Could not find gesture binding `%s`",
+                        gesturecombo);
+}
+
+/**
+ * Parse and execute bindgesture or unbindgesture command.
+ */
+static struct cmd_results *cmd_bind_or_unbind_gesture(int argc, char **argv, bool unbind) {
+        int minargs = 2;
+        char *bindtype = "bindgesture";
+        if (unbind) {
+                minargs--;
+                bindtype = "unbindgesture";
+        }
+
+        struct cmd_results *error = NULL;
+        if ((error = checkarg(argc, bindtype, EXPECTED_AT_LEAST, minargs))) {
+                return error;
+        }
+        struct sway_gesture_binding *binding = calloc(1, sizeof(struct sway_gesture_binding));
+        if (!binding) {
+                return cmd_results_new(CMD_FAILURE, "Unable to allocate binding");
+        }
+        binding->input = strdup("*");
+
+        bool warn = true;
+
+        // Handle flags
+        while (argc > 0) {
+                if (strcmp("--exact", argv[0]) == 0) {
+                        binding->flags |= BINDING_EXACT;
+                } else if (strcmp("--no-warn", argv[0]) == 0) {
+                        warn = false;
+                } else if (strncmp("--input-device=", argv[0],
+                                        strlen("--input-device=")) == 0) {
+                        free(binding->input);
+                        binding->input = strdup(argv[0] + strlen("--input-device="));
+                } else {
+                        break;
+                }
+                argv++;
+                argc--;
+        }
+
+        if (argc < minargs) {
+                free(binding);
+                return cmd_results_new(CMD_FAILURE,
+                                "Invalid %s command (expected at least %d "
+                                "non-option arguments, got %d)", bindtype, minargs, argc);
+        }
+
+        char* errmsg = NULL;
+        if ((errmsg = gesture_parse(argv[0], &binding->gesture))) {
+                free(binding);
+                struct cmd_results *final = cmd_results_new(CMD_FAILURE,
+                                "Invalid %s command (%s)",
+                                bindtype, errmsg);
+                free(errmsg);
+                return final;
+        }
+
+        if (unbind) {
+                return gesture_binding_remove(binding, argv[0]);
+        }
+        binding->command = join_args(argv + 1, argc - 1);
+        return gesture_binding_add(binding, argv[0], warn);
+}
+
+struct cmd_results *cmd_bindgesture(int argc, char **argv) {
+        return cmd_bind_or_unbind_gesture(argc, argv, false);
+}
+
+struct cmd_results *cmd_unbindgesture(int argc, char **argv) {
+        return cmd_bind_or_unbind_gesture(argc, argv, true);
+}