tmp: testing out touch gestures

assets/config.conf

@@ -261,3 +261,22 @@ axisbind=SUPER,DOWN,viewtoright_have_client
 # layer rule
 layerrule=animation_type_open:zoom,layer_name:rofi
 layerrule=animation_type_close:zoom,layer_name:rofi
+
+# Touch gesture settings
+touch_distance_threshold = 100
+touch_degrees_leniency = 30
+touch_timeoutms = 1000
+touch_edge_size_left = 50
+touch_edge_size_top = 50
+touch_edge_size_right = 50
+touch_edge_size_bottom = 50
+
+# Canvas touch gestures
+touchgesturebind=up,any,any,2,canvas_zoom_resize,1.3
+touchgesturebind=down,any,any,2,canvas_zoom_resize,0.7
+
+# 3-finger swipe: pan
+touchgesturebind=right,any,any,3,canvas_pan,300,0
+touchgesturebind=left,any,any,3,canvas_pan,-300,0
+touchgesturebind=up,any,any,3,canvas_pan,0,300
+touchgesturebind=down,any,any,3,canvas_pan,0,-300

src/config/parse_config.h

@@ -128,18 +128,8 @@ typedef struct {
 
 // 默认按键绑定数组
 KeyBinding default_key_bindings[] = {
-	CHVT(1),
-	CHVT(2),
-	CHVT(3),
-	CHVT(4),
-	CHVT(5),
-	CHVT(6),
-	CHVT(7),
-	CHVT(8),
-	CHVT(9),
-	CHVT(10),
-	CHVT(11),
-	CHVT(12),
+	CHVT(1), CHVT(2), CHVT(3), CHVT(4),	 CHVT(5),  CHVT(6),
+	CHVT(7), CHVT(8), CHVT(9), CHVT(10), CHVT(11), CHVT(12),
 };
 
 typedef struct {
@@ -170,6 +160,15 @@ typedef struct {
 	Arg arg;
 } GestureBinding;
 
+typedef struct {
+	uint32_t swipe;
+	uint32_t edge;
+	uint32_t distance;
+	uint32_t fingers_count;
+	int32_t (*func)(const Arg *);
+	Arg arg;
+} TouchGestureBinding;
+
 typedef struct {
 	int32_t id;
 	char *layout_name;
@@ -296,6 +295,13 @@ typedef struct {
 
 	char *tablet_map_to_mon;
 
+	double touch_distance_threshold;
+	double touch_degrees_leniency;
+	uint32_t touch_timeoutms;
+	double touch_edge_size_left;
+	double touch_edge_size_top;
+	double touch_edge_size_right;
+	double touch_edge_size_bottom;
 	int32_t blur;
 	int32_t blur_layer;
 	int32_t blur_optimized;
@@ -361,6 +367,9 @@ typedef struct {
 	GestureBinding *gesture_bindings;
 	int32_t gesture_bindings_count;
 
+	TouchGestureBinding *touch_gesture_bindings;
+	int32_t touch_gesture_bindings_count;
+
 	ConfigEnv **env;
 	int32_t env_count;
 
@@ -549,6 +558,92 @@ int32_t parse_direction(const char *str) {
 	}
 }
 
+int32_t parse_touch_direction(const char *str) {
+	char lowerStr[11];
+	int32_t i = 0;
+	while (str[i] && i < 10) {
+		lowerStr[i] = tolower(str[i]);
+		i++;
+	}
+	lowerStr[i] = '\0';
+
+	if (strcmp(lowerStr, "up") == 0) {
+		return TOUCH_SWIPE_UP;
+	} else if (strcmp(lowerStr, "down") == 0) {
+		return TOUCH_SWIPE_DOWN;
+	} else if (strcmp(lowerStr, "left") == 0) {
+		return TOUCH_SWIPE_LEFT;
+	} else if (strcmp(lowerStr, "right") == 0) {
+		return TOUCH_SWIPE_RIGHT;
+	} else if (strcmp(lowerStr, "up_left") == 0) {
+		return TOUCH_SWIPE_UP_LEFT;
+	} else if (strcmp(lowerStr, "up_right") == 0) {
+		return TOUCH_SWIPE_UP_RIGHT;
+	} else if (strcmp(lowerStr, "down_left") == 0) {
+		return TOUCH_SWIPE_DOWN_LEFT;
+	} else if (strcmp(lowerStr, "down_right") == 0) {
+		return TOUCH_SWIPE_DOWN_RIGHT;
+	} else {
+		return TOUCH_SWIPE_NONE;
+	}
+}
+
+int32_t parse_touch_edge(const char *str) {
+	char lowerStr[13];
+	int32_t i = 0;
+	while (str[i] && i < 12) {
+		lowerStr[i] = tolower(str[i]);
+		i++;
+	}
+	lowerStr[i] = '\0';
+
+	if (strcmp(lowerStr, "any") == 0) {
+		return EDGE_ANY;
+	} else if (strcmp(lowerStr, "none") == 0) {
+		return EDGE_NONE;
+	} else if (strcmp(lowerStr, "left") == 0) {
+		return EDGE_LEFT;
+	} else if (strcmp(lowerStr, "right") == 0) {
+		return EDGE_RIGHT;
+	} else if (strcmp(lowerStr, "top") == 0) {
+		return EDGE_TOP;
+	} else if (strcmp(lowerStr, "bottom") == 0) {
+		return EDGE_BOTTOM;
+	} else if (strcmp(lowerStr, "top_left") == 0) {
+		return CORNER_TOP_LEFT;
+	} else if (strcmp(lowerStr, "top_right") == 0) {
+		return CORNER_TOP_RIGHT;
+	} else if (strcmp(lowerStr, "bottom_left") == 0) {
+		return CORNER_BOTTOM_LEFT;
+	} else if (strcmp(lowerStr, "bottom_right") == 0) {
+		return CORNER_BOTTOM_RIGHT;
+	} else {
+		return EDGE_ANY;
+	}
+}
+
+int32_t parse_distance(const char *str) {
+	char lowerStr[7];
+	int32_t i = 0;
+	while (str[i] && i < 6) {
+		lowerStr[i] = tolower(str[i]);
+		i++;
+	}
+	lowerStr[i] = '\0';
+
+	if (strcmp(lowerStr, "any") == 0) {
+		return DISTANCE_ANY;
+	} else if (strcmp(lowerStr, "short") == 0) {
+		return DISTANCE_SHORT;
+	} else if (strcmp(lowerStr, "medium") == 0) {
+		return DISTANCE_MEDIUM;
+	} else if (strcmp(lowerStr, "long") == 0) {
+		return DISTANCE_LONG;
+	} else {
+		return DISTANCE_ANY;
+	}
+}
+
 int32_t parse_fold_state(const char *str) {
 	// 将输入字符串转换为小写
 	char lowerStr[10];
@@ -1226,6 +1321,10 @@ FuncType parse_func_name(char *func_name, Arg *arg, char *arg_value,
 	} else if (strcmp(func_name, "canvas_zoom_resize") == 0) {
 		func = canvas_zoom_resize;
 		(*arg).f = atof(arg_value);
+	} else if (strcmp(func_name, "canvas_pan") == 0) {
+		func = canvas_pan;
+		(*arg).f = atof(arg_value);
+		(*arg).f2 = atof(arg_value2);
 	} else if (strcmp(func_name, "canvas_overview_toggle") == 0) {
 		func = canvas_overview_toggle;
 	} else if (strcmp(func_name, "canvas_fill_viewport") == 0) {
@@ -1709,6 +1808,20 @@ bool parse_option(Config *config, char *key, char *value) {
 		if (config->tablet_map_to_mon)
 			free(config->tablet_map_to_mon);
 		config->tablet_map_to_mon = strdup(value);
+	} else if (strcmp(key, "touch_distance_threshold") == 0) {
+		config->touch_distance_threshold = atof(value);
+	} else if (strcmp(key, "touch_degrees_leniency") == 0) {
+		config->touch_degrees_leniency = atof(value);
+	} else if (strcmp(key, "touch_timeoutms") == 0) {
+		config->touch_timeoutms = atoi(value);
+	} else if (strcmp(key, "touch_edge_size_left") == 0) {
+		config->touch_edge_size_left = atof(value);
+	} else if (strcmp(key, "touch_edge_size_top") == 0) {
+		config->touch_edge_size_top = atof(value);
+	} else if (strcmp(key, "touch_edge_size_right") == 0) {
+		config->touch_edge_size_right = atof(value);
+	} else if (strcmp(key, "touch_edge_size_bottom") == 0) {
+		config->touch_edge_size_bottom = atof(value);
 	} else if (strcmp(key, "gappih") == 0) {
 		config->gappih = atoi(value);
 	} else if (strcmp(key, "gappiv") == 0) {
@@ -2740,6 +2853,91 @@ bool parse_option(Config *config, char *key, char *value) {
 			config->gesture_bindings_count++;
 		}
 
+	} else if (strncmp(key, "touchgesturebind", 16) == 0) {
+		config->touch_gesture_bindings =
+			realloc(config->touch_gesture_bindings,
+					(config->touch_gesture_bindings_count + 1) *
+						sizeof(TouchGestureBinding));
+		if (!config->touch_gesture_bindings) {
+			fprintf(stderr,
+					"\033[1m\033[31m[ERROR]:\033[33m Failed to allocate "
+					"memory for axis touchgesturebind\n");
+			return false;
+		}
+
+		TouchGestureBinding *binding =
+			&config
+				 ->touch_gesture_bindings[config->touch_gesture_bindings_count];
+		memset(binding, 0, sizeof(TouchGestureBinding));
+
+		char swipe_str[256], edge_str[256], distance_str[256],
+			fingers_count_str[256], func_name[256],
+			arg_value[256] = "0\0", arg_value2[256] = "0\0",
+			arg_value3[256] = "0\0", arg_value4[256] = "0\0",
+			arg_value5[256] = "0\0";
+		if (sscanf(value,
+				   "%255[^,],%255[^,],%255[^,],%255[^,],%255["
+				   "^,],%255[^,],%255[^,],%255[^,],%255[^,],%255[^\n]",
+				   swipe_str, edge_str, distance_str, fingers_count_str,
+				   func_name, arg_value, arg_value2, arg_value3, arg_value4,
+				   arg_value5) < 4) {
+			fprintf(stderr,
+					"\033[1m\033[31m[ERROR]:\033[33m Invalid touchgesturebind "
+					"format: %s\n",
+					value);
+			return false;
+		}
+
+		trim_whitespace(swipe_str);
+		trim_whitespace(edge_str);
+		trim_whitespace(distance_str);
+		trim_whitespace(fingers_count_str);
+		trim_whitespace(func_name);
+		trim_whitespace(arg_value);
+		trim_whitespace(arg_value2);
+		trim_whitespace(arg_value3);
+		trim_whitespace(arg_value4);
+		trim_whitespace(arg_value5);
+
+		binding->swipe = parse_touch_direction(swipe_str);
+		binding->edge = parse_touch_edge(edge_str);
+		binding->distance = parse_distance(distance_str);
+		binding->fingers_count = atoi(fingers_count_str);
+		binding->arg.i = 0;
+		binding->arg.i2 = 0;
+		binding->arg.f = 0.0f;
+		binding->arg.f2 = 0.0f;
+		binding->arg.ui = 0;
+		binding->arg.ui2 = 0;
+		binding->arg.v = NULL;
+		binding->arg.v2 = NULL;
+		binding->arg.v3 = NULL;
+		binding->func =
+			parse_func_name(func_name, &binding->arg, arg_value, arg_value2,
+							arg_value3, arg_value4, arg_value5);
+
+		if (!binding->func) {
+			if (binding->arg.v) {
+				free(binding->arg.v);
+				binding->arg.v = NULL;
+			}
+			if (binding->arg.v2) {
+				free(binding->arg.v2);
+				binding->arg.v2 = NULL;
+			}
+			if (binding->arg.v3) {
+				free(binding->arg.v3);
+				binding->arg.v3 = NULL;
+			}
+			fprintf(stderr,
+					"\033[1m\033[31m[ERROR]:\033[33m Unknown "
+					"dispatch in "
+					"touchgesturebind: \033[1m\033[31m%s\n",
+					func_name);
+			return false;
+		} else {
+			config->touch_gesture_bindings_count++;
+		}
 	} else if (strncmp(key, "source-optional", 15) == 0) {
 		parse_config_file(config, value, false);
 	} else if (strncmp(key, "source", 6) == 0) {
@@ -3036,6 +3234,26 @@ void free_config(void) {
 		config.gesture_bindings_count = 0;
 	}
 
+	if (config.touch_gesture_bindings) {
+		for (i = 0; i < config.touch_gesture_bindings_count; i++) {
+			if (config.touch_gesture_bindings[i].arg.v) {
+				free((void *)config.touch_gesture_bindings[i].arg.v);
+				config.touch_gesture_bindings[i].arg.v = NULL;
+			}
+			if (config.touch_gesture_bindings[i].arg.v2) {
+				free((void *)config.touch_gesture_bindings[i].arg.v2);
+				config.touch_gesture_bindings[i].arg.v2 = NULL;
+			}
+			if (config.touch_gesture_bindings[i].arg.v3) {
+				free((void *)config.touch_gesture_bindings[i].arg.v3);
+				config.touch_gesture_bindings[i].arg.v3 = NULL;
+			}
+		}
+		free(config.touch_gesture_bindings);
+		config.touch_gesture_bindings = NULL;
+		config.touch_gesture_bindings_count = 0;
+	}
+
 	// 释放 tag_rules
 	if (config.tag_rules) {
 		for (int32_t i = 0; i < config.tag_rules_count; i++) {
@@ -3265,6 +3483,19 @@ void override_config(void) {
 	config.button_map = CLAMP_INT(config.button_map, 0, 1);
 	config.axis_scroll_factor =
 		CLAMP_FLOAT(config.axis_scroll_factor, 0.1f, 10.0f);
+	config.touch_distance_threshold =
+		CLAMP_FLOAT(config.touch_distance_threshold, 1.0f, 10000.0f);
+	config.touch_degrees_leniency =
+		CLAMP_FLOAT(config.touch_degrees_leniency, 0.0f, 45.0f);
+	config.touch_timeoutms = CLAMP_INT(config.touch_timeoutms, 1, 60000);
+	config.touch_edge_size_left =
+		CLAMP_FLOAT(config.touch_edge_size_left, 1.0f, 10000.0f);
+	config.touch_edge_size_top =
+		CLAMP_FLOAT(config.touch_edge_size_top, 1.0f, 10000.0f);
+	config.touch_edge_size_right =
+		CLAMP_FLOAT(config.touch_edge_size_right, 1.0f, 10000.0f);
+	config.touch_edge_size_bottom =
+		CLAMP_FLOAT(config.touch_edge_size_bottom, 1.0f, 10000.0f);
 	config.gappih = CLAMP_INT(config.gappih, 0, 1000);
 	config.gappiv = CLAMP_INT(config.gappiv, 0, 1000);
 	config.gappoh = CLAMP_INT(config.gappoh, 0, 1000);
@@ -3357,6 +3588,13 @@ void set_value_default() {
 	config.scratchpad_cross_monitor = 0;
 	config.focus_cross_tag = 0;
 	config.axis_scroll_factor = 1.0;
+	config.touch_distance_threshold = 50.0;
+	config.touch_degrees_leniency = 15.0;
+	config.touch_timeoutms = 800;
+	config.touch_edge_size_left = 50.0;
+	config.touch_edge_size_top = 50.0;
+	config.touch_edge_size_right = 50.0;
+	config.touch_edge_size_bottom = 50.0;
 	config.view_current_to_back = 0;
 	config.single_scratchpad = 1;
 	config.xwayland_persistence = 1;
@@ -3554,6 +3792,8 @@ bool parse_config(void) {
 	config.switch_bindings_count = 0;
 	config.gesture_bindings = NULL;
 	config.gesture_bindings_count = 0;
+	config.touch_gesture_bindings = NULL;
+	config.touch_gesture_bindings_count = 0;
 	config.env = NULL;
 	config.env_count = 0;
 	config.exec = NULL;

src/dispatch/bind_declare.h

@@ -72,6 +72,7 @@ int32_t enable_monitor(const Arg *arg);
 int32_t toggle_monitor(const Arg *arg);
 int32_t scroller_stack(const Arg *arg);
 int32_t canvas_zoom_resize(const Arg *arg);
+int32_t canvas_pan(const Arg *arg);
 int32_t canvas_overview_toggle(const Arg *arg);
 int32_t canvas_fill_viewport(const Arg *arg);
 int32_t canvas_centerview(const Arg *arg);

src/dispatch/bind_define.h

@@ -1957,6 +1957,24 @@ int32_t canvas_zoom_resize(const Arg *arg) {
 	return 0;
 }
 
+int32_t canvas_pan(const Arg *arg) {
+	if (!selmon || !is_canvas_layout(selmon))
+		return 0;
+
+	Client *fs = focustop(selmon);
+	if (fs && fs->isfullscreen)
+		return 0;
+
+	uint32_t tag = selmon->pertag->curtag;
+	float zoom = selmon->pertag->canvas_zoom[tag];
+
+	selmon->pertag->canvas_pan_x[tag] -= arg->f / zoom;
+	selmon->pertag->canvas_pan_y[tag] -= arg->f2 / zoom;
+
+	canvas_reposition(selmon);
+	return 0;
+}
+
 int32_t canvas_overview_toggle(const Arg *arg) {
 	if (!selmon || !is_canvas_layout(selmon))
 		return 0;

src/dispatch/gesture.h

@@ -0,0 +1,233 @@
+int32_t gesture_calculate_swipe_within_degrees(double gestdegrees,
+											   double wantdegrees) {
+	return (gestdegrees >= wantdegrees - config.touch_degrees_leniency &&
+			gestdegrees <= wantdegrees + config.touch_degrees_leniency);
+}
+
+uint32_t gesture_calculate_swipe(double x0, double y0, double x1, double y1) {
+	double t, degrees, distance;
+
+	t = atan2(x1 - x0, y0 - y1);
+	degrees = 57.2957795130823209 * (t < 0 ? t + 6.2831853071795865 : t);
+	distance = sqrt(pow(x1 - x0, 2) + pow(y1 - y0, 2));
+
+	wlr_log(WLR_DEBUG, "Swipe distance=[%.2f]; degrees=[%.2f]", distance,
+			degrees);
+
+	if (distance < config.touch_distance_threshold)
+		return TOUCH_SWIPE_NONE;
+	else if (gesture_calculate_swipe_within_degrees(degrees, 0))
+		return TOUCH_SWIPE_UP;
+	else if (gesture_calculate_swipe_within_degrees(degrees, 45))
+		return TOUCH_SWIPE_UP_RIGHT;
+	else if (gesture_calculate_swipe_within_degrees(degrees, 90))
+		return TOUCH_SWIPE_RIGHT;
+	else if (gesture_calculate_swipe_within_degrees(degrees, 135))
+		return TOUCH_SWIPE_DOWN_RIGHT;
+	else if (gesture_calculate_swipe_within_degrees(degrees, 180))
+		return TOUCH_SWIPE_DOWN;
+	else if (gesture_calculate_swipe_within_degrees(degrees, 225))
+		return TOUCH_SWIPE_DOWN_LEFT;
+	else if (gesture_calculate_swipe_within_degrees(degrees, 270))
+		return TOUCH_SWIPE_LEFT;
+	else if (gesture_calculate_swipe_within_degrees(degrees, 315))
+		return TOUCH_SWIPE_UP_LEFT;
+	else if (gesture_calculate_swipe_within_degrees(degrees, 360))
+		return TOUCH_SWIPE_UP;
+
+	return TOUCH_SWIPE_NONE;
+}
+
+uint32_t gesture_calculate_distance(Monitor *m, double x0, double y0, double x1,
+									double y1, int32_t swipe) {
+	double distance = sqrt(pow(x1 - x0, 2) + pow(y1 - y0, 2));
+	double diag = sqrt(pow(m->m.width, 2) + pow(m->m.height, 2));
+	switch (swipe) {
+	case TOUCH_SWIPE_UP:
+	case TOUCH_SWIPE_DOWN:
+		if (distance >= m->m.height * 0.66) {
+			return DISTANCE_LONG;
+		} else if (distance >= m->m.height * 0.33) {
+			return DISTANCE_MEDIUM;
+		} else {
+			return DISTANCE_SHORT;
+		}
+		break;
+	case TOUCH_SWIPE_RIGHT:
+	case TOUCH_SWIPE_LEFT:
+		if (distance >= m->m.width * 0.66) {
+			return DISTANCE_LONG;
+		} else if (distance >= m->m.width * 0.33) {
+			return DISTANCE_MEDIUM;
+		} else {
+			return DISTANCE_SHORT;
+		}
+		break;
+	case TOUCH_SWIPE_UP_RIGHT:
+	case TOUCH_SWIPE_UP_LEFT:
+	case TOUCH_SWIPE_DOWN_RIGHT:
+	case TOUCH_SWIPE_DOWN_LEFT:
+		if (distance >= diag * 0.66) {
+			return DISTANCE_LONG;
+		} else if (distance >= diag * 0.33) {
+			return DISTANCE_MEDIUM;
+		} else {
+			return DISTANCE_SHORT;
+		}
+		break;
+	}
+
+	return 0;
+}
+
+uint32_t gesture_calculate_edge(Monitor *m, double x0, double y0, double x1,
+								double y1) {
+	uint32_t horizontal = EDGE_NONE;
+	uint32_t vertical = EDGE_NONE;
+
+	if (x0 <= config.touch_edge_size_left) {
+		horizontal = EDGE_LEFT;
+	} else if (x0 >= m->m.width - config.touch_edge_size_right) {
+		horizontal = EDGE_RIGHT;
+	} else if (x1 <= config.touch_edge_size_left) {
+		horizontal = EDGE_LEFT;
+	} else if (x1 >= m->m.width - config.touch_edge_size_right) {
+		horizontal = EDGE_RIGHT;
+	}
+	if (y0 <= config.touch_edge_size_top) {
+		vertical = EDGE_TOP;
+	} else if (y0 >= m->m.height - config.touch_edge_size_bottom) {
+		vertical = EDGE_BOTTOM;
+	} else if (y1 <= config.touch_edge_size_top) {
+		vertical = EDGE_TOP;
+	} else if (y1 >= m->m.height - config.touch_edge_size_bottom) {
+		vertical = EDGE_BOTTOM;
+	}
+	if (horizontal == EDGE_LEFT && vertical == EDGE_TOP) {
+		return CORNER_TOP_LEFT;
+	} else if (horizontal == EDGE_RIGHT && vertical == EDGE_TOP) {
+		return CORNER_TOP_RIGHT;
+	} else if (horizontal == EDGE_LEFT && vertical == EDGE_BOTTOM) {
+		return CORNER_BOTTOM_LEFT;
+	} else if (horizontal == EDGE_RIGHT && vertical == EDGE_BOTTOM) {
+		return CORNER_BOTTOM_RIGHT;
+	} else if (horizontal != EDGE_NONE) {
+		return horizontal;
+	} else {
+		return vertical;
+	}
+}
+
+int32_t gesture_execute(int32_t nfingers, uint32_t swipe, uint32_t edge,
+						uint32_t distance) {
+	int32_t i;
+	int32_t handled = 0;
+
+	wlr_log(WLR_DEBUG, "f:%d s:%d e:%d d:%d", nfingers, swipe, edge, distance);
+
+	TouchGestureBinding *g;
+	for (i = 0; i < config.touch_gesture_bindings_count; i++) {
+		g = &config.touch_gesture_bindings[i];
+		if (swipe == g->swipe && nfingers == g->fingers_count &&
+			(distance == g->distance || g->distance == DISTANCE_ANY) &&
+			(g->edge == EDGE_ANY || edge == g->edge ||
+			 ((edge == CORNER_TOP_LEFT || edge == CORNER_TOP_RIGHT) &&
+			  g->edge == EDGE_TOP) ||
+			 ((edge == CORNER_BOTTOM_LEFT || edge == CORNER_BOTTOM_RIGHT) &&
+			  g->edge == EDGE_BOTTOM) ||
+			 ((edge == CORNER_TOP_LEFT || edge == CORNER_BOTTOM_LEFT) &&
+			  g->edge == EDGE_LEFT) ||
+			 ((edge == CORNER_TOP_RIGHT || edge == CORNER_BOTTOM_RIGHT) &&
+			  g->edge == EDGE_RIGHT)) &&
+			g->func) {
+			g->func(&g->arg);
+			handled = 1;
+		}
+	}
+	return handled;
+}
+
+void gesture_consume(TouchGroup *tg, TouchPoint *t) {
+	if (t->consumed_by_gesture)
+		return;
+
+	struct timespec now;
+	struct wlr_touch_cancel_event *event =
+		ecalloc(1, sizeof(struct wlr_touch_cancel_event));
+
+	clock_gettime(CLOCK_MONOTONIC_RAW, &now);
+
+	event->touch_id = t->touch_id;
+	event->touch = tg->touch;
+	event->time_msec = now.tv_sec * 1000 + now.tv_nsec / 1000000;
+
+	wlr_log(WLR_DEBUG, "gesture_consume id: %d", t->touch_id);
+
+	t->consumed_by_gesture = true;
+
+	handle_touchcancel(event);
+
+	free(event);
+}
+
+void gesture_touch_down(TouchGroup *tg, TouchPoint *t, double x, double y) {
+	wlr_log(WLR_DEBUG, "touch_down id: %d", t->touch_id);
+
+	t->end_x = x;
+	t->end_y = y;
+
+	if (wl_list_empty(&tg->touch_points))
+		clock_gettime(CLOCK_MONOTONIC_RAW, &tg->time_down);
+}
+
+void gesture_touch_motion(TouchGroup *tg, TouchPoint *t, double x, double y) {
+	t->end_x = x;
+	t->end_y = y;
+}
+
+void gesture_touch_up(TouchGroup *tg, TouchPoint *t) {
+	struct timespec now;
+
+	wlr_log(WLR_DEBUG, "touch_up id: %d", t->touch_id);
+	wlr_log(WLR_DEBUG, "len: %d", wl_list_length(&tg->touch_points));
+
+	clock_gettime(CLOCK_MONOTONIC_RAW, &now);
+
+	uint32_t swipe =
+		gesture_calculate_swipe(t->start_x, t->start_y, t->end_x, t->end_y);
+
+	if (swipe == TOUCH_SWIPE_NONE) {
+		goto cleanup;
+	}
+
+	if (tg->touch_points_pending_swipe == 0) {
+		tg->pending_swipe = swipe;
+	}
+	if (tg->pending_swipe != swipe) {
+		goto cleanup;
+	}
+
+	tg->touch_points_pending_swipe++;
+
+	if (wl_list_length(&tg->touch_points) == 1) {
+		uint32_t edge = gesture_calculate_edge(tg->m, t->start_x, t->start_y,
+											   t->end_x, t->end_y);
+		uint32_t distance = gesture_calculate_distance(
+			tg->m, t->start_x, t->start_y, t->end_x, t->end_y, swipe);
+
+		if (config.touch_timeoutms >
+			((now.tv_sec - tg->time_down.tv_sec) * 1000 +
+			 (now.tv_nsec - tg->time_down.tv_nsec) / 1000000)) {
+			if (gesture_execute(tg->touch_points_pending_swipe,
+								tg->pending_swipe, edge, distance))
+				gesture_consume(tg, t);
+
+			tg->touch_points_pending_swipe = 0;
+		}
+		return;
+	}
+
+cleanup:
+	if (wl_list_length(&tg->touch_points) == 1)
+		tg->touch_points_pending_swipe = 0;
+}

src/mango.c

@@ -75,6 +75,7 @@
 #include <wlr/types/wlr_tablet_pad.h>
 #include <wlr/types/wlr_tablet_tool.h>
 #include <wlr/types/wlr_tablet_v2.h>
+#include <wlr/types/wlr_touch.h>
 #include <wlr/types/wlr_viewporter.h>
 #include <wlr/types/wlr_virtual_keyboard_v1.h>
 #include <wlr/types/wlr_virtual_pointer_v1.h>
@@ -156,6 +157,32 @@ enum { SWIPE_UP, SWIPE_DOWN, SWIPE_LEFT, SWIPE_RIGHT };
 enum { CurNormal, CurPressed, CurMove, CurResize, CurPan }; /* cursor */
 enum { XDGShell, LayerShell, X11 };							/* client types */
 enum { AxisUp, AxisDown, AxisLeft, AxisRight };				// 滚轮滚动的方向
+enum {
+	TOUCH_SWIPE_UP,
+	TOUCH_SWIPE_DOWN,
+	TOUCH_SWIPE_RIGHT,
+	TOUCH_SWIPE_LEFT,
+	TOUCH_SWIPE_UP_RIGHT,
+	TOUCH_SWIPE_UP_LEFT,
+	TOUCH_SWIPE_DOWN_LEFT,
+	TOUCH_SWIPE_DOWN_RIGHT,
+	TOUCH_SWIPE_NONE
+};
+
+enum {
+	EDGE_ANY,
+	EDGE_NONE,
+	EDGE_LEFT,
+	EDGE_RIGHT,
+	EDGE_TOP,
+	EDGE_BOTTOM,
+	CORNER_TOP_LEFT,
+	CORNER_TOP_RIGHT,
+	CORNER_BOTTOM_LEFT,
+	CORNER_BOTTOM_RIGHT,
+};
+
+enum { DISTANCE_ANY, DISTANCE_SHORT, DISTANCE_MEDIUM, DISTANCE_LONG };
 enum {
 	LyrBg,
 	LyrBlur,
@@ -460,6 +487,23 @@ typedef struct {
 	struct wl_listener destroy;
 } KeyboardGroup;
 
+typedef struct {
+	struct wl_list link;
+	int32_t touch_id;
+	double start_x, start_y, end_x, end_y, start_surface_x, start_surface_y;
+	bool consumed_by_gesture;
+} TouchPoint;
+
+typedef struct TouchGroup {
+	struct wl_list link;
+	struct wlr_touch *touch;
+	struct wl_list touch_points;
+	struct timespec time_down;
+	uint32_t pending_swipe;
+	uint32_t touch_points_pending_swipe;
+	Monitor *m;
+} TouchGroup;
+
 typedef struct {
 	struct wlr_keyboard_shortcuts_inhibitor_v1 *inhibitor;
 	struct wl_listener destroy;
@@ -624,6 +668,7 @@ static void createpointerconstraint(struct wl_listener *listener, void *data);
 static void cursorconstrain(struct wlr_pointer_constraint_v1 *constraint);
 static void commitpopup(struct wl_listener *listener, void *data);
 static void createpopup(struct wl_listener *listener, void *data);
+static void createtouch(struct wlr_touch *touch);
 static void cursorframe(struct wl_listener *listener, void *data);
 static void cursorwarptohint(void);
 static void destroydecoration(struct wl_listener *listener, void *data);
@@ -700,6 +745,13 @@ static void setsel(struct wl_listener *listener, void *data);
 static void setup(void);
 static void startdrag(struct wl_listener *listener, void *data);
 
+static void touchdown(struct wl_listener *listener, void *data);
+static void touchup(struct wl_listener *listener, void *data);
+static void touchframe(struct wl_listener *listener, void *data);
+static void touchmotion(struct wl_listener *listener, void *data);
+static void touchcancel(struct wl_listener *listener, void *data);
+static void handle_touchcancel(struct wlr_touch_cancel_event *event);
+
 static void unlocksession(struct wl_listener *listener, void *data);
 static void unmaplayersurfacenotify(struct wl_listener *listener, void *data);
 static void unmapnotify(struct wl_listener *listener, void *data);
@@ -913,6 +965,10 @@ static struct wlr_output_layout *output_layout;
 static struct wlr_box sgeom;
 static struct wl_list mons;
 static Monitor *selmon;
+static struct wl_list touch_groups;
+
+static bool emulating_pointer_from_touch = false;
+static int32_t emulated_pointer_touch_id;
 
 static int32_t enablegaps = 1; /* enables gaps, used by togglegaps */
 static int32_t axis_apply_time = 0;
@@ -1019,6 +1075,11 @@ static struct wl_listener request_set_sel = {.notify = setsel};
 static struct wl_listener request_set_cursor_shape = {.notify = setcursorshape};
 static struct wl_listener request_start_drag = {.notify = requeststartdrag};
 static struct wl_listener start_drag = {.notify = startdrag};
+static struct wl_listener touch_down = {.notify = touchdown};
+static struct wl_listener touch_frame = {.notify = touchframe};
+static struct wl_listener touch_motion = {.notify = touchmotion};
+static struct wl_listener touch_up = {.notify = touchup};
+static struct wl_listener touch_cancel = {.notify = touchcancel};
 static struct wl_listener new_session_lock = {.notify = locksession};
 static struct wl_listener drm_lease_request = {.notify = requestdrmlease};
 static struct wl_listener keyboard_shortcuts_inhibit_new_inhibitor = {
@@ -1050,12 +1111,13 @@ static struct wl_event_source *sync_keymap;
 #include "animation/tag.h"
 static void canvas_reposition(Monitor *m);
 static void canvas_pan_to_client(Monitor *m, Client *c);
-#include "layout/dwindle.h"
 #include "dispatch/bind_define.h"
+#include "dispatch/gesture.h"
 #include "ext-protocol/all.h"
 #include "fetch/fetch.h"
 #include "layout/arrange.h"
 #include "layout/canvas.h"
+#include "layout/dwindle.h"
 #include "layout/horizontal.h"
 #include "layout/vertical.h"
 
@@ -2227,7 +2289,11 @@ bool handle_buttonpress(struct wlr_pointer_button_event *event) {
 	struct wlr_surface *old_pointer_focus_surface =
 		seat->pointer_state.focused_surface;
 
-	handlecursoractivity();
+	if (!event->pointer ||
+		event->pointer->base.type != WLR_INPUT_DEVICE_TOUCH) {
+		handlecursoractivity();
+	}
+
 	wlr_idle_notifier_v1_notify_activity(idle_notifier, seat);
 
 	if (event->pointer && check_trackpad_disabled(event->pointer)) {
@@ -2501,6 +2567,11 @@ void cleanuplisteners(void) {
 	wl_list_remove(&request_set_cursor_shape.link);
 	wl_list_remove(&request_start_drag.link);
 	wl_list_remove(&start_drag.link);
+	wl_list_remove(&touch_down.link);
+	wl_list_remove(&touch_frame.link);
+	wl_list_remove(&touch_motion.link);
+	wl_list_remove(&touch_up.link);
+	wl_list_remove(&touch_cancel.link);
 	wl_list_remove(&new_session_lock.link);
 	wl_list_remove(&tearing_new_object.link);
 	wl_list_remove(&keyboard_shortcuts_inhibit_new_inhibitor.link);
@@ -3596,6 +3667,16 @@ void createpointerconstraint(struct wl_listener *listener, void *data) {
 		   &pointer_constraint->destroy, destroypointerconstraint);
 }
 
+void createtouch(struct wlr_touch *wlr_touch) {
+	TouchGroup *touch = ecalloc(1, sizeof(TouchGroup));
+
+	touch->touch = wlr_touch;
+	wl_list_init(&touch->touch_points);
+	wl_list_insert(&touch_groups, &touch->link);
+	wlr_touch->data = touch;
+	wlr_cursor_attach_input_device(cursor, &wlr_touch->base);
+}
+
 void cursorconstrain(struct wlr_pointer_constraint_v1 *constraint) {
 	if (active_constraint == constraint)
 		return;
@@ -3962,6 +4043,9 @@ void inputdevice(struct wl_listener *listener, void *data) {
 	case WLR_INPUT_DEVICE_SWITCH:
 		createswitch(wlr_switch_from_input_device(device));
 		break;
+	case WLR_INPUT_DEVICE_TOUCH:
+		createtouch(wlr_touch_from_input_device(device));
+		break;
 	default:
 		/* TODO handle other input device types */
 		break;
@@ -3975,6 +4059,8 @@ void inputdevice(struct wl_listener *listener, void *data) {
 	caps = WL_SEAT_CAPABILITY_POINTER;
 	if (!wl_list_empty(&kb_group->wlr_group->devices))
 		caps |= WL_SEAT_CAPABILITY_KEYBOARD;
+	if (!wl_list_empty(&touch_groups))
+		caps |= WL_SEAT_CAPABILITY_TOUCH;
 	wlr_seat_set_capabilities(seat, caps);
 }
 
@@ -4721,7 +4807,9 @@ void motionnotify(uint32_t time, struct wlr_input_device *device, double dx,
 		}
 
 		wlr_cursor_move(cursor, device, dx, dy);
-		handlecursoractivity();
+		if (!device || device->type != WLR_INPUT_DEVICE_TOUCH) {
+			handlecursoractivity();
+		}
 		wlr_idle_notifier_v1_notify_activity(idle_notifier, seat);
 
 		/* Update selmon (even while dragging a window) */
@@ -6666,6 +6754,14 @@ void setup(void) {
 	wl_signal_add(&cursor->events.tablet_tool_button, &tablet_tool_button);
 	wl_signal_add(&cursor->events.tablet_tool_tip, &tablet_tool_tip);
 
+	wl_list_init(&touch_groups);
+
+	wl_signal_add(&cursor->events.touch_down, &touch_down);
+	wl_signal_add(&cursor->events.touch_frame, &touch_frame);
+	wl_signal_add(&cursor->events.touch_motion, &touch_motion);
+	wl_signal_add(&cursor->events.touch_up, &touch_up);
+	wl_signal_add(&cursor->events.touch_cancel, &touch_cancel);
+
 	// 这两句代码会造成obs窗口里的鼠标光标消失,不知道注释有什么影响
 	cursor_shape_mgr = wlr_cursor_shape_manager_v1_create(dpy, 1);
 	wl_signal_add(&cursor_shape_mgr->events.request_set_shape,
@@ -6782,6 +6878,256 @@ void startdrag(struct wl_listener *listener, void *data) {
 	LISTEN_STATIC(&drag->icon->events.destroy, destroydragicon);
 }
 
+void touchdown(struct wl_listener *listener, void *data) {
+	struct wlr_touch_down_event *event = data;
+	TouchGroup *tg = event->touch->data;
+	TouchPoint *t = ecalloc(1, sizeof(TouchPoint));
+	double lx, ly;
+	double sx, sy;
+	double dx, dy;
+	struct wlr_surface *surface;
+	Client *c = NULL;
+	Monitor *m = NULL;
+	Monitor *m_iter;
+
+	wlr_idle_notifier_v1_notify_activity(idle_notifier, seat);
+
+	if (!cursor_hidden) {
+		hidecursor(NULL);
+	}
+
+	wl_list_for_each(m_iter, &mons, link) {
+		if (m_iter == NULL || m_iter->wlr_output == NULL) {
+			continue;
+		}
+		if (event->touch->output_name != NULL &&
+			0 != strcmp(event->touch->output_name, m->wlr_output->name)) {
+			continue;
+		}
+
+		wlr_cursor_map_input_to_output(cursor, &event->touch->base,
+									   m_iter->wlr_output);
+		m = m_iter;
+		break;
+	}
+
+	if (!tg->m)
+		tg->m = m; // TODO: properly handle output_name = null, instead of
+				   // falling back to last monitor in the list;
+
+	wlr_cursor_absolute_to_layout_coords(cursor, &event->touch->base, event->x,
+										 event->y, &lx, &ly);
+
+	t->touch_id = event->touch_id;
+	t->start_x = lx;
+	t->start_y = ly;
+	gesture_touch_down(tg, t, lx, ly);
+	wl_list_insert(&tg->touch_points, &t->link);
+
+	xytonode(lx, ly, &surface, &c, NULL, &sx, &sy);
+	t->start_surface_x = sx;
+	t->start_surface_y = sy;
+	if (surface != NULL && wlr_surface_accepts_touch(surface, seat)) {
+		if (c)
+			focusclient(c, 0);
+
+		wlr_seat_touch_notify_down(seat, surface, event->time_msec,
+								   event->touch_id, sx, sy);
+		emulating_pointer_from_touch = false;
+		return;
+	}
+
+	if (!emulating_pointer_from_touch) {
+		emulating_pointer_from_touch = true;
+		emulated_pointer_touch_id = event->touch_id;
+
+		wlr_cursor_warp_closest(cursor, &event->touch->base, lx, ly);
+		dx = lx - cursor->x;
+		dy = ly - cursor->y;
+		motionnotify(event->time_msec, &event->touch->base, dx, dy, dx, dy);
+
+		struct wlr_pointer_button_event button_event = {
+			.pointer = (struct wlr_pointer *)event->touch,
+			.time_msec = event->time_msec,
+			.button = BTN_LEFT,
+			.state = WL_POINTER_BUTTON_STATE_PRESSED};
+		buttonpress(NULL, &button_event);
+	}
+}
+
+void touchup(struct wl_listener *listener, void *data) {
+	struct wlr_touch_up_event *event = data;
+	TouchGroup *tg = event->touch->data;
+	TouchPoint *t = NULL;
+	TouchPoint *t_iter;
+
+	wl_list_for_each(t_iter, &tg->touch_points, link) {
+		if (t_iter->touch_id == event->touch_id) {
+			t = t_iter;
+			break;
+		}
+	}
+	if (!t)
+		return;
+
+	gesture_touch_up(tg, t);
+
+	if (t->consumed_by_gesture) {
+		wl_list_remove(&t->link);
+		free(t);
+		return;
+	}
+
+	wl_list_remove(&t->link);
+	free(t);
+
+	if (emulating_pointer_from_touch) {
+		if (emulated_pointer_touch_id == event->touch_id) {
+			struct wlr_pointer_button_event button_event = {
+				.pointer = (struct wlr_pointer *)event->touch,
+				.time_msec = event->time_msec,
+				.button = BTN_LEFT,
+				.state = WL_POINTER_BUTTON_STATE_RELEASED};
+			buttonpress(NULL, &button_event);
+
+			emulating_pointer_from_touch = false;
+		}
+		return;
+	}
+
+	if (!wlr_seat_touch_get_point(seat, event->touch_id)) {
+		return;
+	}
+
+	wlr_seat_touch_notify_up(seat, event->time_msec, event->touch_id);
+	wlr_idle_notifier_v1_notify_activity(idle_notifier, seat);
+}
+
+void touchframe(struct wl_listener *listener, void *data) {
+	if (emulating_pointer_from_touch) {
+		wlr_seat_pointer_notify_frame(seat);
+	} else {
+		wlr_seat_touch_notify_frame(seat);
+	}
+	wlr_idle_notifier_v1_notify_activity(idle_notifier, seat);
+}
+
+void touchmotion(struct wl_listener *listener, void *data) {
+	struct wlr_touch_motion_event *event = data;
+	TouchGroup *tg = event->touch->data;
+	TouchPoint *t = NULL;
+	TouchPoint *t_iter;
+	double lx, ly;
+	double sx, sy;
+	double dx, dy;
+	struct wlr_surface *surface;
+	Client *c = NULL;
+	struct wlr_touch_point *p = NULL;
+
+	wl_list_for_each(t_iter, &tg->touch_points, link) {
+		if (t_iter->touch_id == event->touch_id) {
+			t = t_iter;
+			break;
+		}
+	}
+	if (!t)
+		return;
+
+	wlr_cursor_absolute_to_layout_coords(cursor, &event->touch->base, event->x,
+										 event->y, &lx, &ly);
+
+	gesture_touch_motion(tg, t, lx, ly);
+
+	if (emulating_pointer_from_touch) {
+		if (emulated_pointer_touch_id == event->touch_id) {
+			dx = lx - cursor->x;
+			dy = ly - cursor->y;
+			motionnotify(event->time_msec, &event->touch->base, dx, dy, dx, dy);
+		}
+		return;
+	}
+
+	p = wlr_seat_touch_get_point(seat, event->touch_id);
+
+	if (!p) {
+		return;
+	}
+
+	sx = t->start_surface_x + (lx - t->start_x);
+	sy = t->start_surface_y + (ly - t->start_y);
+
+	surface = p->surface;
+	if (surface && surface->data) {
+		toplevel_from_wlr_surface(surface, &c, NULL);
+		if (c)
+			focusclient(c, 0);
+	}
+	wlr_seat_touch_notify_motion(seat, event->time_msec, event->touch_id, sx,
+								 sy);
+
+	wlr_idle_notifier_v1_notify_activity(idle_notifier, seat);
+}
+
+void touchcancel(struct wl_listener *listener, void *data) {
+	struct wlr_touch_cancel_event *event = data;
+	TouchGroup *tg = event->touch->data;
+	TouchPoint *t = NULL;
+	TouchPoint *t_iter;
+
+	wl_list_for_each(t_iter, &tg->touch_points, link) {
+		if (t_iter->touch_id == event->touch_id) {
+			t = t_iter;
+			break;
+		}
+	}
+	if (!t)
+		return;
+
+	wl_list_remove(&t->link);
+	free(t);
+
+	if (wl_list_length(&tg->touch_points) == 0)
+		tg->touch_points_pending_swipe = 0;
+
+	handle_touchcancel(event);
+}
+
+void handle_touchcancel(struct wlr_touch_cancel_event *event) {
+	struct wlr_touch_point *p = NULL;
+	struct wl_client *client = NULL;
+	struct wlr_seat_client *seat_client = NULL;
+
+	if (emulating_pointer_from_touch) {
+		if (emulated_pointer_touch_id == event->touch_id) {
+			struct wlr_pointer_button_event button_event = {
+				.pointer = (struct wlr_pointer *)event->touch,
+				.time_msec = event->time_msec,
+				.button = BTN_LEFT,
+				.state = WL_POINTER_BUTTON_STATE_RELEASED};
+			buttonpress(NULL, &button_event);
+
+			emulating_pointer_from_touch = false;
+		}
+		return;
+	}
+
+	p = wlr_seat_touch_get_point(seat, event->touch_id);
+
+	if (!p) {
+		return;
+	}
+
+	if (p->surface) {
+		client = wl_resource_get_client(p->surface->resource);
+		seat_client = wlr_seat_client_for_wl_client(seat, client);
+		if (seat_client != NULL) {
+			wlr_seat_touch_notify_cancel(seat, seat_client);
+		}
+	}
+
+	wlr_idle_notifier_v1_notify_activity(idle_notifier, seat);
+}
+
 void tag_client(const Arg *arg, Client *target_client) {
 	Client *fc = NULL;
 	if (target_client && arg->ui & TAGMASK) {