cowmonk/cowterm
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UTF-8 Fixes, attempt at scrolling, & minor changes

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Changed some global -> local const vars
This commit is contained in:
cowmonk 2025-01-23 08:45:09 -07:00
parent 14296c3b6b
commit 0436087761
1 changed files with 61 additions and 28 deletions
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89
cowterm.c
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@ -21,10 +21,10 @@
#include "config.h"
// There isn't a need for MAX_ROWS or MAX_COLS, but ¯\_(ツ)_/¯
#define MAX_ROWS 1000
#define MAX_COLS 1000
#define CHAR_WIDTH 8
#define CHAR_HEIGHT 16
const int MAX_ROWS = 1000;
const int MAX_COLS = 1000;
const int CHAR_WIDTH = 8;
const int CHAR_HEIGHT = 16;
// General window/terminal stuff
static pid_t child_pid;
@ -1250,40 +1250,61 @@ static int master_cb(int fd, void *data, Window window) {
default:
if (cursor_y >= term_rows || cursor_x >= term_cols)
break;
if ((buf[i] >= 32 && buf[i] <= 126) || buf[i] == '\t') {
if (buf[i] & 0x80) { // UTF-8
char mb_buf[MB_CUR_MAX];
int mb_len = 0;
int j = i;
while (mb_len < (int)MB_CUR_MAX && j < n) {
if (mb_len == 0) {
if ((buf[j] & 0x80) == 0)
break;
mb_buf[mb_len] = buf[j];
mb_len++;
} else if ((buf[j] & 0xC0) == 0x80) {
mb_buf[mb_len] = buf[j];
mb_len++;
} else {
break;
}
j++;
}
if (mb_len > 0) {
wchar_t wc;
mbstate_t ps;
memset(&ps, 0, sizeof(ps));
if (mbrtowc(&wc, mb_buf, mb_len, &ps) > 0) {
terminal_buffer[cursor_y][cursor_x] = wc;
color_buffer[cursor_y][cursor_x] = current_color;
attr_buffer[cursor_y][cursor_x] = current_attr;
bg_color_buffer[cursor_y][cursor_x] = current_bg_color;
needs_refresh = 1;
cursor_x++;
if (cursor_x >= term_cols) {
cursor_x = 0;
cursor_y++;
if (cursor_y >= term_rows) {
scroll_region_up(1);
cursor_y = term_rows - 1;
}
}
}
i += mb_len - 1;
}
} else if (buf[i] >= 32) {
terminal_buffer[cursor_y][cursor_x] = buf[i];
color_buffer[cursor_y][cursor_x] = current_color;
attr_buffer[cursor_y][cursor_x] = current_attr;
bg_color_buffer[cursor_y][cursor_x] = current_bg_color;
needs_refresh = 1;
if (++cursor_x >= term_cols) {
cursor_x++;
if (cursor_x >= term_cols) {
cursor_x = 0;
if (++cursor_y >= term_rows) {
cursor_y++;
if (cursor_y >= term_rows) {
scroll_region_up(1);
cursor_y = term_rows - 1;
}
}
} else if (buf[i] & 0x80) { // UTF-8
mbstate_t ps;
memset(&ps, 0, sizeof(ps));
wchar_t wc;
size_t len = mbrtowc(&wc, buf + i, n - i, &ps);
if (len != (size_t)-1 && len != (size_t)-2 && len != 0) {
terminal_buffer[cursor_y][cursor_x] = wc;
color_buffer[cursor_y][cursor_x] = current_color;
attr_buffer[cursor_y][cursor_x] = current_attr;
bg_color_buffer[cursor_y][cursor_x] = current_bg_color;
needs_refresh = 1;
if (++cursor_x >= term_cols) {
cursor_x = 0;
if (++cursor_y >= term_rows) {
scroll_region_up(1);
cursor_y = term_rows - 1;
}
}
i += len - 1; // -1 because loop will increment i
}
}
break;
}
@ -1328,6 +1349,18 @@ static void key_press_cb(XKeyEvent *event, void *data) {
return;
}
if (event->state & ShiftMask) {
if (keysym == XK_Page_Up) {
scroll_region_up(term_rows / 2);
needs_refresh = 1;
return;
} else if (keysym == XK_Page_Down) {
scroll_region_down(term_rows / 2);
needs_refresh = 1;
return;
}
}
if (keysym == XK_Return || keysym == XK_KP_Enter) {
write(*master, "\r", 1); // Shell handles return
} else if (keysym == XK_BackSpace) {