A fast, lightweight and minimalistic Wayland terminal emulator
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#pragma once
#include <stdbool.h>
#include <stddef.h>
#include <sys/types.h>
#include <pixman.h>
#include <wayland-client.h>
#include "terminal.h"
struct buffer {
unsigned long cookie;
int width;
int height;
int stride;
bool busy;
size_t size; /* Buffer size */
void *mmapped; /* Raw data (TODO: rename) */
struct wl_buffer *wl_buf;
pixman_image_t **pix;
size_t pix_instances;
/* Internal */
int fd; /* memfd */
struct wl_shm_pool *pool;
void *real_mmapped; /* Address returned from mmap */
size_t mmap_size; /* Size of mmap (>= size) */
off_t offset; /* Offset into memfd where data begins */
bool scrollable;
bool purge; /* True if this buffer should be destroyed */
unsigned age;
struct damage *scroll_damage;
size_t scroll_damage_count;
pixman_region32_t dirty;
};
struct buffer *shm_get_buffer(
struct wl_shm *shm, int width, int height, unsigned long cookie, bool scrollable, size_t pix_instances);
void shm_fini(void);
void shm_set_max_pool_size(off_t max_pool_size);
bool shm_can_scroll(const struct buffer *buf);
bool shm_scroll(struct wl_shm *shm, struct buffer *buf, int rows,
int top_margin, int top_keep_rows,
int bottom_margin, int bottom_keep_rows);
void shm_purge(struct wl_shm *shm, unsigned long cookie);
struct terminal;
static inline unsigned long shm_cookie_grid(const struct terminal *term) { return (unsigned long)((uintptr_t)term + 0); }
static inline unsigned long shm_cookie_search(const struct terminal *term) { return (unsigned long)((uintptr_t)term + 1); }
static inline unsigned long shm_cookie_scrollback_indicator(const struct terminal *term) { return (unsigned long)(uintptr_t)term + 2; }
static inline unsigned long shm_cookie_render_timer(const struct terminal *term) { return (unsigned long)(uintptr_t)term + 3; }
static inline unsigned long shm_cookie_csd(const struct terminal *term, int n) { return (unsigned long)((uintptr_t)term + 4 + (n)); }
struct url;
static inline unsigned long shm_cookie_url(const struct url *url) { return (unsigned long)(uintptr_t)url; }