mirror of
https://github.com/swaywm/sway
synced 2024-11-29 20:54:45 +01:00
105 lines
2.8 KiB
C
105 lines
2.8 KiB
C
#ifndef _SWAY_GESTURE_H
|
|
#define _SWAY_GESTURE_H
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
|
|
/**
|
|
* A gesture type used in binding.
|
|
*/
|
|
enum gesture_type {
|
|
GESTURE_TYPE_NONE = 0,
|
|
GESTURE_TYPE_HOLD,
|
|
GESTURE_TYPE_PINCH,
|
|
GESTURE_TYPE_SWIPE,
|
|
};
|
|
|
|
// Turns single type enum value to constant string representation.
|
|
const char *gesture_type_string(enum gesture_type direction);
|
|
|
|
// Value to use to accept any finger count
|
|
extern const uint8_t GESTURE_FINGERS_ANY;
|
|
|
|
/**
|
|
* A gesture direction used in binding.
|
|
*/
|
|
enum gesture_direction {
|
|
GESTURE_DIRECTION_NONE = 0,
|
|
// Directions based on delta x and y
|
|
GESTURE_DIRECTION_UP = 1 << 0,
|
|
GESTURE_DIRECTION_DOWN = 1 << 1,
|
|
GESTURE_DIRECTION_LEFT = 1 << 2,
|
|
GESTURE_DIRECTION_RIGHT = 1 << 3,
|
|
// Directions based on scale
|
|
GESTURE_DIRECTION_INWARD = 1 << 4,
|
|
GESTURE_DIRECTION_OUTWARD = 1 << 5,
|
|
// Directions based on rotation
|
|
GESTURE_DIRECTION_CLOCKWISE = 1 << 6,
|
|
GESTURE_DIRECTION_COUNTERCLOCKWISE = 1 << 7,
|
|
};
|
|
|
|
// Turns single direction enum value to constant string representation.
|
|
const char *gesture_direction_string(enum gesture_direction direction);
|
|
|
|
/**
|
|
* Struct representing a pointer gesture
|
|
*/
|
|
struct gesture {
|
|
enum gesture_type type;
|
|
uint8_t fingers;
|
|
uint32_t directions;
|
|
};
|
|
|
|
/**
|
|
* Parses gesture from <gesture>[:<fingers>][:<directions>] string.
|
|
*
|
|
* Return NULL on success, otherwise error message string
|
|
*/
|
|
char *gesture_parse(const char *input, struct gesture *output);
|
|
|
|
// Turns gesture into string representation
|
|
char *gesture_to_string(struct gesture *gesture);
|
|
|
|
// Check if gesture is of certain type and finger count.
|
|
bool gesture_check(struct gesture *target,
|
|
enum gesture_type type, uint8_t fingers);
|
|
|
|
// Check if a gesture target/binding is match by other gesture/input
|
|
bool gesture_match(struct gesture *target,
|
|
struct gesture *to_match, bool exact);
|
|
|
|
// Returns true if gesture are exactly the same
|
|
bool gesture_equal(struct gesture *a, struct gesture *b);
|
|
|
|
// Compare distance between two matched target gestures.
|
|
int8_t gesture_compare(struct gesture *a, struct gesture *b);
|
|
|
|
// Small helper struct to track gestures over time
|
|
struct gesture_tracker {
|
|
enum gesture_type type;
|
|
uint8_t fingers;
|
|
double dx, dy;
|
|
double scale;
|
|
double rotation;
|
|
};
|
|
|
|
// Begin gesture tracking
|
|
void gesture_tracker_begin(struct gesture_tracker *tracker,
|
|
enum gesture_type type, uint8_t fingers);
|
|
|
|
// Check if the provides type is currently being tracked
|
|
bool gesture_tracker_check(struct gesture_tracker *tracker,
|
|
enum gesture_type type);
|
|
|
|
// Update gesture track with new data point
|
|
void gesture_tracker_update(struct gesture_tracker *tracker, double dx,
|
|
double dy, double scale, double rotation);
|
|
|
|
// Reset tracker
|
|
void gesture_tracker_cancel(struct gesture_tracker *tracker);
|
|
|
|
// Reset tracker and return gesture tracked
|
|
struct gesture *gesture_tracker_end(struct gesture_tracker *tracker);
|
|
|
|
#endif
|