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Handle SIGWINCH

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This commit is contained in:
Night Kaly 2024-11-11 12:09:57 +00:00
parent 8a49a9b255
commit 51688b6ad6
Signed by: night0721
SSH key fingerprint: SHA256:B/hgVwUoBpx5vdNsXl9w8XwZljA9766uk6T4ubZp5HM
2 changed files with 47 additions and 22 deletions
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5
config.h
View file

@ -22,6 +22,11 @@
#define MAUVE_FG "\033[48;2;203;166;247m"
#define MAUVE_BG "\033[38;2;203;166;247m"
#define YELLOW_BG "\033[38;2;249;226;175m"
#define RED_FG "\033[48;2;243;139;168m"
#define RED_BG "\033[38;2;243;139;168m"
/* ERROR is red with bold and italic */
#define ERROR "\033[38;2;243;139;168m\033[1m\033[3m"
enum keys {
BACKSPACE = 127,

64
vip.c
View file

@ -18,7 +18,7 @@
#include "config.h"
struct termios newt, oldt;
int screenrows, screencols;
int rows, cols;
editor_t editor[9];
int editor_idx = 0;
int editors = 0;
@ -60,7 +60,7 @@ void bprintf(const char *fmt, ...);
*/
void draw_status_bar(void)
{
move_cursor(screenrows - 1, 1);
move_cursor(rows - 1, 1);
/* Reverse and bold */
bprintf("\033[7m\033[1m");
@ -118,8 +118,8 @@ void draw_status_bar(void)
}
bprintf("%s%s%s%s", git, BLACK_BG, WHITE_FG, file);
while (file_len < screencols) {
if (screencols - mode_len - git_len - file_len == info_len + lines_len + coord_len) {
while (file_len < cols) {
if (cols - mode_len - git_len - file_len == info_len + lines_len + coord_len) {
bprintf("%s%s", info, SURFACE_1_BG);
if (cur_editor->mode == NORMAL) {
bprintf(BLUE_FG);
@ -147,7 +147,7 @@ void draw_status_bar(void)
file_len++;
}
}
bprintf("\033[0m");
bprintf("\033[m");
}
void refresh_screen(void)
@ -165,14 +165,14 @@ void refresh_screen(void)
if (cur_editor->y < cur_editor->rowoff) {
cur_editor->rowoff = cur_editor->y;
}
if (cur_editor->y >= cur_editor->rowoff + screenrows - 3) {
cur_editor->rowoff = cur_editor->y - screenrows + 3;
if (cur_editor->y >= cur_editor->rowoff + rows - 3) {
cur_editor->rowoff = cur_editor->y - rows + 3;
}
if (cur_editor->rx < cur_editor->coloff) {
cur_editor->coloff = cur_editor->rx;
}
if (cur_editor->rx >= cur_editor->coloff + screencols) {
cur_editor->coloff = cur_editor->rx - screencols + 1;
if (cur_editor->rx >= cur_editor->coloff + cols) {
cur_editor->coloff = cur_editor->rx - cols + 1;
}
bprintf("\033H\033[2 q");
@ -304,8 +304,9 @@ void del_char(void)
void init_editor(char *filename)
{
if (editors > 8) {
wpprintw("\033[38;2;255;0;0m\033[1mOnly 9 tabs are allowed");
wpprintw("%sOnly 9 tabs are allowed", ERROR);
readch();
wpprintw("");
return;
}
cur_editor = &editor[editors++];
@ -323,7 +324,7 @@ void init_editor(char *filename)
getcwd(cwd, PATH_MAX);
strcpy(cur_editor->cwd, cwd);
if (get_window_size(&screenrows, &screencols) == -1) {
if (get_window_size(&rows, &cols) == -1) {
die("get_window_size");
}
@ -365,7 +366,7 @@ char *prompt_editor(char *prompt, void (*callback)(char *, int))
buf[0] = '\0';
while (1) {
wpprintw(prompt, buf);
move_cursor(screenrows, prompt_len - 1 + strlen(buf));
move_cursor(rows, prompt_len - 1 + strlen(buf));
int c = readch();
if (c == DEL_KEY || c == CTRL_KEY('h') || c == BACKSPACE) {
if (buflen != 0) {
@ -564,15 +565,15 @@ void save_file(void)
void draw_rows(void)
{
for (int y = 0; y < screenrows - 1; y++) {
for (int y = 0; y < rows - 1; y++) {
move_cursor(y + 1, 1);
int filerow = y + cur_editor->rowoff;
if (filerow >= cur_editor->rows) {
if (cur_editor->rows == 0 && y == screenrows / 2) {
if (cur_editor->rows == 0 && y == rows / 2) {
char welcome[11];
snprintf(welcome, sizeof(welcome), "VIP v%s", VERSION);
/* Length of welcome message must be 10 */
int padding = (screencols - 10) / 2;
int padding = (cols - 10) / 2;
while (padding--)
bprintf(" ");
bprintf(welcome);
@ -580,7 +581,7 @@ void draw_rows(void)
} else {
int len = cur_editor->row[filerow].render_size - cur_editor->coloff;
if (len < 0) len = 0;
if (len > screencols) len = screencols;
if (len > cols) len = cols;
char *c = &cur_editor->row[filerow].render[cur_editor->coloff];
unsigned char *hl = &cur_editor->row[filerow].hl[cur_editor->coloff];
@ -892,8 +893,27 @@ void die(const char *s)
exit(1);
}
void handle_sigwinch(int ignore)
{
get_window_size(&rows, &cols);
if (cols < 80 || rows < 24) {
die("vip: Terminal size needs to be at least 80x24");
}
refresh_screen();
}
int main(int argc, char **argv)
{
struct sigaction sa;
sa.sa_handler = handle_sigwinch;
sa.sa_flags = SA_RESTART;
sigemptyset(&sa.sa_mask);
if (sigaction(SIGWINCH, &sa, NULL) == -1) {
perror("sigaction");
exit(1);
}
bprintf("\033[?1049h\033[2J\033[2q");
if (tcgetattr(STDIN_FILENO, &oldt) == -1) {
die("tcgetattr");
@ -948,10 +968,10 @@ int main(int argc, char **argv)
if (c == PAGE_UP) {
cur_editor->y = cur_editor->rowoff;
} else if (c == PAGE_DOWN) {
cur_editor->y = cur_editor->rowoff + screenrows - 1;
cur_editor->y = cur_editor->rowoff + rows - 1;
if (cur_editor->y > cur_editor->rows) cur_editor->y = cur_editor->rows;
}
int times = screenrows;
int times = rows;
while (times--)
move_xy(c == PAGE_UP ? ARROW_UP : ARROW_DOWN);
break;
@ -1026,7 +1046,7 @@ int main(int argc, char **argv)
break;
} else {
if (cur_editor->dirty) {
wpprintw("\033[1m\033[38;2;255;0;0mNo write since last change for buffer \"%s\"\033[0m", cur_editor->filename);
wpprintw("%sNo write since last change for buffer \"%s\"", ERROR, cur_editor->filename);
cur_editor->mode = NORMAL;
break;
}
@ -1153,16 +1173,16 @@ void cleanup(void)
*/
void wpprintw(const char *fmt, ...)
{
char buffer[screencols];
char buffer[cols];
va_list args;
va_start(args, fmt);
vsnprintf(buffer, sizeof(buffer), fmt, args);
va_end(args);
move_cursor(screenrows, 1);
move_cursor(rows, 1);
/* Clear line and print formatted string */
bprintf("\033[K%s", buffer);
bprintf("\033[K%s\033[0m", buffer);
}
void move_cursor(int row, int col)