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/**
* @file point.h
*
* Terminal point types for referencing locations in the terminal grid.
*/
#ifndef GHOSTTY_VT_POINT_H
#define GHOSTTY_VT_POINT_H
#include <stdint.h>
#include <ghostty/vt/types.h>
#ifdef __cplusplus
extern "C" {
#endif
/** @defgroup point Point
*
* Types for referencing x/y positions in the terminal grid under
* different coordinate systems (active area, viewport, full screen,
* scrollback history).
*
* @{
*/
/**
* A coordinate in the terminal grid.
*
* @ingroup point
*/
typedef struct {
/** Column (0-indexed). */
uint16_t x;
/** Row (0-indexed). May exceed page size for screen/history tags. */
uint32_t y;
} GhosttyPointCoordinate;
/**
* Point reference tag.
*
* Determines which coordinate system a point uses.
*
* @ingroup point
*/
typedef enum GHOSTTY_ENUM_TYPED {
/** Active area where the cursor can move. */
GHOSTTY_POINT_TAG_ACTIVE = 0,
/** Visible viewport (changes when scrolled). */
GHOSTTY_POINT_TAG_VIEWPORT = 1,
/** Full screen including scrollback. */
GHOSTTY_POINT_TAG_SCREEN = 2,
/** Scrollback history only (before active area). */
GHOSTTY_POINT_TAG_HISTORY = 3,
GHOSTTY_POINT_TAG_MAX_VALUE = GHOSTTY_ENUM_MAX_VALUE,
} GhosttyPointTag;
/**
* Point value union.
*
* @ingroup point
*/
typedef union {
/** Coordinate (used for all tag variants). */
GhosttyPointCoordinate coordinate;
/** Padding for ABI compatibility. Do not use. */
uint64_t _padding[2];
} GhosttyPointValue;
/**
* Tagged union for a point in the terminal grid.
*
* @ingroup point
*/
typedef struct {
GhosttyPointTag tag;
GhosttyPointValue value;
} GhosttyPoint;
/** @} */
#ifdef __cplusplus
}
#endif
#endif /* GHOSTTY_VT_POINT_H */
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