Merge branch 'next' of zekjur:/git/i3 into next

This commit is contained in:
Michael Stapelberg 2009-07-25 22:31:01 +02:00
commit 1e095ece84
2 changed files with 74 additions and 0 deletions

View File

@ -152,4 +152,12 @@ void xcb_raise_window(xcb_connection_t *conn, xcb_window_t window);
*/
void cached_pixmap_prepare(xcb_connection_t *conn, struct Cached_Pixmap *pixmap);
/**
* Calculate the width of the given text (16-bit characters, UCS) with given
* real length (amount of glyphs) using the given font.
*
*/
int predict_text_width(xcb_connection_t *conn, char *font_pattern, char *text,
int length);
#endif

View File

@ -293,3 +293,69 @@ void cached_pixmap_prepare(xcb_connection_t *conn, struct Cached_Pixmap *pixmap)
xcb_create_gc(conn, pixmap->gc, pixmap->id, 0, 0);
}
/*
* Returns the xcb_charinfo_t for the given character (specified by row and
* column in the lookup table) if existing, otherwise the minimum bounds.
*
*/
static xcb_charinfo_t *get_charinfo(int col, int row, xcb_query_font_reply_t *font_info,
xcb_charinfo_t *table, bool dont_fallback) {
xcb_charinfo_t *result;
/* Bounds checking */
if (row < font_info->min_byte1 || row > font_info->max_byte1 ||
col < font_info->min_char_or_byte2 || col > font_info->max_char_or_byte2)
return NULL;
/* If we dont have a table to lookup the infos per character, return the
* minimum bounds */
if (table == NULL)
return &font_info->min_bounds;
result = &table[((row - font_info->min_byte1) *
(font_info->max_char_or_byte2 - font_info->min_char_or_byte2 + 1)) +
(col - font_info->min_char_or_byte2)];
/* If the character has an entry in the table, return it */
if (result->character_width != 0 ||
(result->right_side_bearing |
result->left_side_bearing |
result->ascent |
result->descent) != 0)
return result;
/* Otherwise, get the default character and return its charinfo */
if (dont_fallback)
return NULL;
return get_charinfo((font_info->default_char >> 8),
(font_info->default_char & 0xFF),
font_info,
table,
true);
}
/*
* Calculate the width of the given text (16-bit characters, UCS) with given
* real length (amount of glyphs) using the given font.
*
*/
int predict_text_width(xcb_connection_t *conn, char *font_pattern, char *text, int length) {
xcb_query_font_reply_t *font_info;
xcb_charinfo_t *table;
int i, width;
i3Font *font = load_font(conn, font_pattern);
font_info = xcb_query_font_reply(conn, xcb_query_font_unchecked(conn, font->id), NULL);
table = xcb_query_font_char_infos(font_info);
for (i = 0; i < 2 * length; i += 2) {
xcb_charinfo_t *info = get_charinfo(text[i+1], text[i], font_info, table, false);
if (info == NULL)
continue;
width += info->character_width;
}
return width;
}