61 lines
2.0 KiB
C
61 lines
2.0 KiB
C
/*
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* vim:ts=8:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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*
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* © 2009 Michael Stapelberg and contributors
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*
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* See file LICENSE for license information.
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*
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* font.c: Handles font loading (with caching, with height information)
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*
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*/
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <xcb/xcb.h>
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#include "data.h"
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#include "util.h"
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TAILQ_HEAD(cached_fonts_head, Font) cached_fonts = TAILQ_HEAD_INITIALIZER(cached_fonts);
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/*
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* Loads a font for usage, getting its height. This function is used very often, so it
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* maintains a cache.
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*
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*/
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i3Font *load_font(xcb_connection_t *connection, const char *pattern) {
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/* Check if we got the font cached */
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i3Font *font;
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TAILQ_FOREACH(font, &cached_fonts, fonts)
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if (strcmp(font->pattern, pattern) == 0)
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return font;
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i3Font *new = smalloc(sizeof(i3Font));
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xcb_void_cookie_t font_cookie;
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xcb_list_fonts_with_info_cookie_t info_cookie;
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/* Send all our requests first */
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new->id = xcb_generate_id(connection);
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font_cookie = xcb_open_font_checked(connection, new->id, strlen(pattern), pattern);
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info_cookie = xcb_list_fonts_with_info(connection, 1, strlen(pattern), pattern);
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check_error(connection, font_cookie, "Could not open font");
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/* Get information (height/name) for this font */
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xcb_list_fonts_with_info_reply_t *reply = xcb_list_fonts_with_info_reply(connection, info_cookie, NULL);
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exit_if_null(reply, "Could not load font \"%s\"\n", pattern);
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if (asprintf(&(new->name), "%.*s", xcb_list_fonts_with_info_name_length(reply),
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xcb_list_fonts_with_info_name(reply)) == -1)
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die("asprintf() failed\n");
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new->pattern = sstrdup(pattern);
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new->height = reply->font_ascent + reply->font_descent;
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/* Insert into cache */
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TAILQ_INSERT_TAIL(&cached_fonts, new, fonts);
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return new;
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}
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