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tui: cyan ▎ gutter on the user's own messages (UX-1)

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Self-messages were rendered identically to anyone else's, so scrolling
back to find "what did I just say?" meant scanning every author name.

Now every rendered chat line carries a 1-column left gutter:
- ▎ (U+258E, cyan) when the message is from the local user
- single space otherwise — keeps the rest of the line aligned

Detection handles both regular messages (username == my_username) and
/me action messages (which use "*" as the author and prefix the actor
into the content).  System messages ("系统") always render with the
space gutter regardless.

Gutter width is folded into the existing truncation budget so long
messages still fit the terminal.
This commit is contained in:
m1ngsama 2026-05-17 13:35:57 +08:00
parent d3ebe25973
commit 94f3d28562
1 changed files with 38 additions and 18 deletions
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56
src/tui.c
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@ -30,6 +30,25 @@ static void format_message_colored(const message_t *msg, char *buffer,
char time_str[32];
strftime(time_str, sizeof(time_str), "%H:%M", &tm_info);
/* Is this message from the local user? Used to draw a 1-column gutter
* marker so they can scan their own contributions when scrolling. */
bool is_self = false;
if (my_username && my_username[0] != '\0' &&
strcmp(msg->username, "系统") != 0) {
if (strcmp(msg->username, "*") == 0) {
/* /me message: content starts with the actor's username */
size_t un_len = strlen(my_username);
if (strncmp(msg->content, my_username, un_len) == 0 &&
(msg->content[un_len] == ' ' || msg->content[un_len] == '\0')) {
is_self = true;
}
} else if (strcmp(msg->username, my_username) == 0) {
is_self = true;
}
}
/* Always 1 column wide so all messages align vertically. */
const char *gutter = is_self ? "\033[36m▎\033[0m" : " ";
bool mentioned = false;
if (my_username && my_username[0] != '\0' &&
strcmp(msg->username, "系统") != 0) {
@ -44,39 +63,40 @@ static void format_message_colored(const message_t *msg, char *buffer,
if (strcmp(msg->username, "系统") == 0) {
snprintf(buffer, buf_size,
"\033[90m--> %s\033[0m", msg->content);
"%s\033[90m--> %s\033[0m", gutter, msg->content);
} else if (strcmp(msg->username, "*") == 0) {
snprintf(buffer, buf_size,
"\033[90m%s\033[0m \033[3;36m* %s\033[0m",
time_str, msg->content);
"%s\033[90m%s\033[0m \033[3;36m* %s\033[0m",
gutter, time_str, msg->content);
} else {
snprintf(buffer, buf_size,
"\033[90m%s\033[0m %s%s\033[0m: %s%s%s",
time_str, username_color(msg->username),
"%s\033[90m%s\033[0m %s%s\033[0m: %s%s%s",
gutter, time_str, username_color(msg->username),
msg->username, hl_start, msg->content, hl_end);
}
/* Plain-text version for width calculation */
/* Plain-text version for width calculation — gutter is 1 column. */
char plain[MAX_MESSAGE_LEN + 128];
if (strcmp(msg->username, "系统") == 0) {
snprintf(plain, sizeof(plain), "--> %s", msg->content);
snprintf(plain, sizeof(plain), " --> %s", msg->content);
} else if (strcmp(msg->username, "*") == 0) {
snprintf(plain, sizeof(plain), "%s * %s", time_str, msg->content);
snprintf(plain, sizeof(plain), " %s * %s", time_str, msg->content);
} else {
snprintf(plain, sizeof(plain), "%s %s: %s",
snprintf(plain, sizeof(plain), " %s %s: %s",
time_str, msg->username, msg->content);
}
if (utf8_string_width(plain) > width) {
/* Rebuild with truncated content */
/* Rebuild with truncated content — prefix_plain also includes the
* 1-column gutter so the budget math comes out right. */
int prefix_width;
char prefix_plain[256];
if (strcmp(msg->username, "系统") == 0) {
snprintf(prefix_plain, sizeof(prefix_plain), "--> ");
snprintf(prefix_plain, sizeof(prefix_plain), " --> ");
} else if (strcmp(msg->username, "*") == 0) {
snprintf(prefix_plain, sizeof(prefix_plain), "%s * ", time_str);
snprintf(prefix_plain, sizeof(prefix_plain), " %s * ", time_str);
} else {
snprintf(prefix_plain, sizeof(prefix_plain), "%s %s: ",
snprintf(prefix_plain, sizeof(prefix_plain), " %s %s: ",
time_str, msg->username);
}
prefix_width = utf8_string_width(prefix_plain);
@ -97,15 +117,15 @@ static void format_message_colored(const message_t *msg, char *buffer,
if (strcmp(msg->username, "系统") == 0) {
snprintf(buffer, buf_size,
"\033[90m--> %s\033[0m", truncated_content);
"%s\033[90m--> %s\033[0m", gutter, truncated_content);
} else if (strcmp(msg->username, "*") == 0) {
snprintf(buffer, buf_size,
"\033[90m%s\033[0m \033[3;36m%s\033[0m",
time_str, truncated_content);
"%s\033[90m%s\033[0m \033[3;36m%s\033[0m",
gutter, time_str, truncated_content);
} else {
snprintf(buffer, buf_size,
"\033[90m%s\033[0m %s%s\033[0m: %s%s%s",
time_str, username_color(msg->username),
"%s\033[90m%s\033[0m %s%s\033[0m: %s%s%s",
gutter, time_str, username_color(msg->username),
msg->username, hl_start, truncated_content, hl_end);
}
}