vterm-module.h (5618B)
1 #ifndef VTERM_MODULE_H 2 #define VTERM_MODULE_H 3 4 #include "emacs-module.h" 5 #include <inttypes.h> 6 #include <stdbool.h> 7 #include <vterm.h> 8 9 // https://gcc.gnu.org/wiki/Visibility 10 #if defined _WIN32 || defined __CYGWIN__ 11 #ifdef __GNUC__ 12 #define VTERM_EXPORT __attribute__ ((dllexport)) 13 #else 14 #define VTERM_EXPORT __declspec(dllexport) 15 #endif 16 #else 17 #if __GNUC__ >= 4 18 #define VTERM_EXPORT __attribute__ ((visibility ("default"))) 19 #else 20 #define VTERM_EXPORT 21 #endif 22 #endif 23 24 VTERM_EXPORT int plugin_is_GPL_compatible; 25 26 #define SB_MAX 100000 // Maximum 'scrollback' value. 27 28 #ifndef MIN 29 #define MIN(X, Y) ((X) < (Y) ? (X) : (Y)) 30 #endif 31 #ifndef MAX 32 #define MAX(X, Y) ((X) > (Y) ? (X) : (Y)) 33 #endif 34 35 typedef struct LineInfo { 36 char *directory; /* working directory */ 37 38 int prompt_col; /* end column of the prompt, if the current line contains the 39 * prompt */ 40 } LineInfo; 41 42 typedef struct ScrollbackLine { 43 size_t cols; 44 LineInfo *info; 45 VTermScreenCell cells[]; 46 } ScrollbackLine; 47 48 typedef struct ElispCodeListNode { 49 char *code; 50 size_t code_len; 51 struct ElispCodeListNode *next; 52 } ElispCodeListNode; 53 54 /* c , p , q , s , 0 , 1 , 2 , 3 , 4 , 5 , 6 , and 7 */ 55 /* clipboard, primary, secondary, select, or cut buffers 0 through 7 */ 56 #define SELECTION_TARGET_MAX 12 57 58 typedef struct Cursor { 59 int row, col; 60 int cursor_type; 61 bool cursor_visible; 62 bool cursor_blink; 63 bool cursor_type_changed; 64 bool cursor_blink_changed; 65 } Cursor; 66 67 typedef struct Term { 68 VTerm *vt; 69 VTermScreen *vts; 70 // buffer used to: 71 // - convert VTermScreen cell arrays into utf8 strings 72 // - receive data from libvterm as a result of key presses. 73 ScrollbackLine **sb_buffer; // Scrollback buffer storage for libvterm 74 size_t sb_current; // number of rows pushed to sb_buffer 75 size_t sb_size; // sb_buffer size 76 // "virtual index" that points to the first sb_buffer row that we need to 77 // push to the terminal buffer when refreshing the scrollback. When negative, 78 // it actually points to entries that are no longer in sb_buffer (because the 79 // window height has increased) and must be deleted from the terminal buffer 80 int sb_pending; 81 int sb_pending_by_height_decr; 82 long linenum; 83 long linenum_added; 84 85 int invalid_start, invalid_end; // invalid rows in libvterm screen 86 bool is_invalidated; 87 88 Cursor cursor; 89 char *title; 90 bool title_changed; 91 92 char *directory; 93 bool directory_changed; 94 95 // Single-linked list of elisp_code. 96 // Newer commands are added at the tail. 97 ElispCodeListNode *elisp_code_first; 98 ElispCodeListNode **elisp_code_p_insert; // pointer to the position where new 99 // node should be inserted 100 101 /* c , p , q , s , 0 , 1 , 2 , 3 , 4 , 5 , 6 , and 7 */ 102 /* clipboard, primary, secondary, select, or cut buffers 0 through 7 */ 103 char selection_target[SELECTION_TARGET_MAX]; 104 char *selection_data; 105 106 /* the size of dirs almost = window height, value = directory of that line */ 107 LineInfo **lines; 108 int lines_len; 109 110 int width, height; 111 int height_resize; 112 bool resizing; 113 bool disable_bold_font; 114 bool disable_underline; 115 bool disable_inverse_video; 116 bool ignore_blink_cursor; 117 118 char *cmd_buffer; 119 120 int pty_fd; 121 } Term; 122 123 static bool compare_cells(VTermScreenCell *a, VTermScreenCell *b); 124 static bool is_key(unsigned char *key, size_t len, char *key_description); 125 static emacs_value render_text(emacs_env *env, Term *term, char *string, 126 int len, VTermScreenCell *cell); 127 static emacs_value render_fake_newline(emacs_env *env, Term *term); 128 static emacs_value render_prompt(emacs_env *env, emacs_value text); 129 static emacs_value cell_rgb_color(emacs_env *env, Term *term, 130 VTermScreenCell *cell, bool is_foreground); 131 132 static int term_settermprop(VTermProp prop, VTermValue *val, void *user_data); 133 134 static void term_redraw(Term *term, emacs_env *env); 135 static void term_flush_output(Term *term, emacs_env *env); 136 static void term_process_key(Term *term, emacs_env *env, unsigned char *key, 137 size_t len, VTermModifier modifier); 138 static void invalidate_terminal(Term *term, int start_row, int end_row); 139 140 void term_finalize(void *object); 141 142 emacs_value Fvterm_new(emacs_env *env, ptrdiff_t nargs, emacs_value args[], 143 void *data); 144 emacs_value Fvterm_update(emacs_env *env, ptrdiff_t nargs, emacs_value args[], 145 void *data); 146 emacs_value Fvterm_redraw(emacs_env *env, ptrdiff_t nargs, emacs_value args[], 147 void *data); 148 emacs_value Fvterm_write_input(emacs_env *env, ptrdiff_t nargs, 149 emacs_value args[], void *data); 150 emacs_value Fvterm_set_size(emacs_env *env, ptrdiff_t nargs, emacs_value args[], 151 void *data); 152 emacs_value Fvterm_set_pty_name(emacs_env *env, ptrdiff_t nargs, 153 emacs_value args[], void *data); 154 emacs_value Fvterm_get_icrnl(emacs_env *env, ptrdiff_t nargs, 155 emacs_value args[], void *data); 156 157 emacs_value Fvterm_get_pwd(emacs_env *env, ptrdiff_t nargs, emacs_value args[], 158 void *data); 159 160 emacs_value Fvterm_get_prompt_point(emacs_env *env, ptrdiff_t nargs, 161 emacs_value args[], void *data); 162 emacs_value Fvterm_reset_cursor_point(emacs_env *env, ptrdiff_t nargs, 163 emacs_value args[], void *data); 164 165 VTERM_EXPORT int emacs_module_init(struct emacs_runtime *ert); 166 167 #endif /* VTERM_MODULE_H */