/*
* vim:ts=4:sw=4:expandtab
+ *
+ * i3 - an improved dynamic tiling window manager
+ * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
+ *
+ * libi3: contains functions which are used by i3 *and* accompanying tools such
+ * as i3-msg, i3-config-wizard, …
+ *
*/
-
#ifndef _LIBI3_H
#define _LIBI3_H
+#include <stdbool.h>
+#include <stdarg.h>
+#include <stdio.h>
#include <xcb/xcb.h>
#include <xcb/xproto.h>
+#include <xcb/xcb_keysyms.h>
+
+typedef struct Font i3Font;
+
+/**
+ * Data structure for cached font information:
+ * - font id in X11 (load it once)
+ * - font height (multiple calls needed to get it)
+ *
+ */
+struct Font {
+ /** The xcb-id for the font */
+ xcb_font_t id;
+
+ /** Font information gathered from the server */
+ xcb_query_font_reply_t *info;
+
+ /** Font table for this font (may be NULL) */
+ xcb_charinfo_t *table;
+
+ /** The height of the font, built from font_ascent + font_descent */
+ int height;
+};
+
+/* Since this file also gets included by utilities which don’t use the i3 log
+ * infrastructure, we define a fallback. */
+#if !defined(ELOG)
+#define ELOG(fmt, ...) fprintf(stderr, "ERROR: " fmt, ##__VA_ARGS__)
+#endif
/**
- * Try to get the socket path from X11 and return NULL if it doesn’t work.
+ * Try to get the contents of the given atom (for example I3_SOCKET_PATH) from
+ * the X11 root window and return NULL if it doesn’t work.
*
- * The memory for the socket path is dynamically allocated and has to be
+ * The memory for the contents is dynamically allocated and has to be
* free()d by the caller.
*
*/
-char *socket_path_from_x11();
+char *root_atom_contents(const char *atomname);
/**
* Safe-wrapper around malloc which exits if malloc returns NULL (meaning that
*/
char *sstrdup(const char *str);
+/**
+ * Safe-wrapper around asprintf which exits if it returns -1 (meaning that
+ * there is no more memory available)
+ *
+ */
+int sasprintf(char **strp, const char *fmt, ...);
+
+/**
+ * Connects to the i3 IPC socket and returns the file descriptor for the
+ * socket. die()s if anything goes wrong.
+ *
+ */
+int ipc_connect(const char *socket_path);
+
/**
* Formats a message (payload) of the given size and type and sends it to i3 via
* the given socket file descriptor.
*/
void fake_configure_notify(xcb_connection_t *conn, xcb_rectangle_t r, xcb_window_t window, int border_width);
+/**
+ * Returns the colorpixel to use for the given hex color (think of HTML). Only
+ * works for true-color (vast majority of cases) at the moment, avoiding a
+ * roundtrip to X11.
+ *
+ * The hex_color has to start with #, for example #FF00FF.
+ *
+ * NOTE that get_colorpixel() does _NOT_ check the given color code for validity.
+ * This has to be done by the caller.
+ *
+ * NOTE that this function may in the future rely on a global xcb_connection_t
+ * variable called 'conn' to be present.
+ *
+ */
+uint32_t get_colorpixel(const char *hex) __attribute__((const));
+
+#if defined(__APPLE__)
+
+/*
+ * Taken from FreeBSD
+ * Returns a pointer to a new string which is a duplicate of the
+ * string, but only copies at most n characters.
+ *
+ */
+char *strndup(const char *str, size_t n);
+
+#endif
+
+/**
+ * All-in-one function which returns the modifier mask (XCB_MOD_MASK_*) for the
+ * given keysymbol, for example for XCB_NUM_LOCK (usually configured to mod2).
+ *
+ * This function initiates one round-trip. Use get_mod_mask_for() directly if
+ * you already have the modifier mapping and key symbols.
+ *
+ */
+uint32_t aio_get_mod_mask_for(uint32_t keysym, xcb_key_symbols_t *symbols);
+
+/**
+ * Returns the modifier mask (XCB_MOD_MASK_*) for the given keysymbol, for
+ * example for XCB_NUM_LOCK (usually configured to mod2).
+ *
+ * This function does not initiate any round-trips.
+ *
+ */
+uint32_t get_mod_mask_for(uint32_t keysym,
+ xcb_key_symbols_t *symbols,
+ xcb_get_modifier_mapping_reply_t *modmap_reply);
+
+/**
+ * Loads a font for usage, also getting its height. If fallback is true,
+ * the fonts 'fixed' or '-misc-*' will be loaded instead of exiting.
+ *
+ */
+i3Font load_font(const char *pattern, const bool fallback);
+
+/**
+ * Defines the font to be used for the forthcoming calls.
+ *
+ */
+void set_font(i3Font *font);
+
+/**
+ * Frees the resources taken by the current font.
+ *
+ */
+void free_font();
+
+/**
+ * Converts the given string to UTF-8 from UCS-2 big endian. The return value
+ * must be freed after use.
+ *
+ */
+char *convert_ucs2_to_utf8(xcb_char2b_t *text, size_t num_glyphs);
+
+/**
+ * Converts the given string to UCS-2 big endian for use with
+ * xcb_image_text_16(). The amount of real glyphs is stored in real_strlen,
+ * a buffer containing the UCS-2 encoded string (16 bit per glyph) is
+ * returned. It has to be freed when done.
+ *
+ */
+xcb_char2b_t *convert_utf8_to_ucs2(char *input, size_t *real_strlen);
+
+/**
+ * Defines the colors to be used for the forthcoming draw_text calls.
+ *
+ */
+void set_font_colors(xcb_gcontext_t gc, uint32_t foreground, uint32_t background);
+
+/**
+ * Draws text onto the specified X drawable (normally a pixmap) at the
+ * specified coordinates (from the top left corner of the leftmost, uppermost
+ * glyph) and using the provided gc. Text can be specified as UCS-2 or UTF-8.
+ *
+ */
+void draw_text(char *text, size_t text_len, bool is_ucs2, xcb_drawable_t drawable,
+ xcb_gcontext_t gc, int x, int y, int max_width);
+
+/**
+ * Predict the text width in pixels for the given text. Text can be specified
+ * as UCS-2 or UTF-8.
+ *
+ */
+int predict_text_width(char *text, size_t text_len, bool is_ucs2);
+
#endif