diff options
Diffstat (limited to 'decode.c')
| -rw-r--r-- | decode.c | 141 |
1 files changed, 138 insertions, 3 deletions
diff --git a/decode.c b/decode.c index 80f47f99d1552..74bbc4fdaf3f7 100644 --- a/decode.c +++ b/decode.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 1984-2017 Mark Nudelman + * Copyright (C) 1984-2019 Mark Nudelman * * You may distribute under the terms of either the GNU General Public * License or the Less License, as specified in the README file. @@ -35,6 +35,9 @@ extern int erase_char, erase2_char, kill_char; extern int secure; +extern int mousecap; +extern int screen_trashed; +extern int sc_height; #define SK(k) \ SK_SPECIAL_KEY, (k), 6, 1, 1, 1 @@ -65,6 +68,8 @@ static unsigned char cmdtable[] = CONTROL('D'),0, A_F_SCROLL, 'u',0, A_B_SCROLL, CONTROL('U'),0, A_B_SCROLL, + ESC,'[','M',0, A_X11MOUSE_IN, + ESC,'[','<',0, A_X116MOUSE_IN, ' ',0, A_F_SCREEN, 'f',0, A_F_SCREEN, CONTROL('F'),0, A_F_SCREEN, @@ -310,7 +315,7 @@ expand_cmd_table(tlist) * Expand special key abbreviations in all command tables. */ public void -expand_cmd_tables() +expand_cmd_tables(VOID_PARAM) { expand_cmd_table(list_fcmd_tables); expand_cmd_table(list_ecmd_tables); @@ -323,7 +328,7 @@ expand_cmd_tables() * Initialize the command lists. */ public void -init_cmds() +init_cmds(VOID_PARAM) { /* * Add the default command tables. @@ -416,6 +421,116 @@ add_var_table(tlist, buf, len) } /* + * Return action for a mouse wheel down event. + */ + static int +mouse_wheel_down(VOID_PARAM) +{ + return ((mousecap == OPT_ONPLUS) ? A_B_MOUSE : A_F_MOUSE); +} + +/* + * Return action for a mouse wheel up event. + */ + static int +mouse_wheel_up(VOID_PARAM) +{ + return ((mousecap == OPT_ONPLUS) ? A_F_MOUSE : A_B_MOUSE); +} + +/* + * Return action for a mouse button release event. + */ + static int +mouse_button_rel(x, y) + int x; + int y; +{ + /* + * {{ It would be better to return an action and then do this + * in commands() but it's nontrivial to pass y to it. }} + */ + if (y < sc_height-1) + { + setmark('#', y); + screen_trashed = 1; + } + return (A_NOACTION); +} + +/* + * Read a decimal integer. Return the integer and set *pterm to the terminating char. + */ + static int +getcc_int(pterm) + char* pterm; +{ + int num = 0; + int digits = 0; + for (;;) + { + char ch = getcc(); + if (ch < '0' || ch > '9') + { + if (pterm != NULL) *pterm = ch; + if (digits == 0) + return (-1); + return (num); + } + num = (10 * num) + (ch - '0'); + ++digits; + } +} + +/* + * Read suffix of mouse input and return the action to take. + * The prefix ("\e[M") has already been read. + */ + static int +x11mouse_action(VOID_PARAM) +{ + int b = getcc() - X11MOUSE_OFFSET; + int x = getcc() - X11MOUSE_OFFSET-1; + int y = getcc() - X11MOUSE_OFFSET-1; + switch (b) { + default: + return (A_NOACTION); + case X11MOUSE_WHEEL_DOWN: + return mouse_wheel_down(); + case X11MOUSE_WHEEL_UP: + return mouse_wheel_up(); + case X11MOUSE_BUTTON_REL: + return mouse_button_rel(x, y); + } +} + +/* + * Read suffix of mouse input and return the action to take. + * The prefix ("\e[<") has already been read. + */ + static int +x116mouse_action(VOID_PARAM) +{ + char ch; + int x, y; + int b = getcc_int(&ch); + if (b < 0 || ch != ';') return (A_NOACTION); + x = getcc_int(&ch) - 1; + if (x < 0 || ch != ';') return (A_NOACTION); + y = getcc_int(&ch) - 1; + if (y < 0) return (A_NOACTION); + switch (b) { + case X11MOUSE_WHEEL_DOWN: + return mouse_wheel_down(); + case X11MOUSE_WHEEL_UP: + return mouse_wheel_up(); + default: + if (ch != 'm') return (A_NOACTION); + return mouse_button_rel(x, y); + } +} + +/* * Search a single command table for the command string in cmd. */ static int @@ -464,6 +579,10 @@ cmd_search(cmd, table, endtable, sp) *sp = ++p; a &= ~A_EXTRA; } + if (a == A_X11MOUSE_IN) + a = x11mouse_action(); + else if (a == A_X116MOUSE_IN) + a = x116mouse_action(); return (a); } } else if (*q == '\0') @@ -579,6 +698,16 @@ lgetenv(var) return (NULL); } +/* + * Is a string null or empty? + */ + public int +isnullenv(s) + char* s; +{ + return (s == NULL || *s == '\0'); +} + #if USERFILE /* * Get an "integer" from a lesskey file. @@ -791,7 +920,13 @@ editchar(c, flags) if (c == erase_char || c == erase2_char) return (EC_BACKSPACE); if (c == kill_char) + { +#if MSDOS_COMPILER==WIN32C + if (!win32_kbhit()) +#endif + return (EC_LINEKILL); + } /* * Collect characters in a buffer. |