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Multi font support. Major refactoring of many places.

This commit is contained in:
LemonBoy 2012-07-23 16:49:39 +02:00
parent 5ea77f2242
commit d7412803f6
2 changed files with 207 additions and 141 deletions
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345
bar.c
View File

@ -12,176 +12,219 @@
// Here be dragons
static xcb_connection_t *c;
static xcb_window_t root, win;
static xcb_gcontext_t gc;
static xcb_drawable_t canvas;
static int font_height, font_width, font_descent;
static int bar_width;
static const unsigned pal[] = {COLOR0,COLOR1,COLOR2,COLOR3,COLOR4,COLOR5,COLOR6,COLOR7,COLOR8,COLOR9};
#define MAX(a,b) ((a > b) ? a : b)
#define MIN(a,b) ((a > b ? b : a))
typedef struct fontset_item_t {
xcb_font_t xcb_ft;
int height;
int width;
int descent;
unsigned short char_max;
unsigned short char_min;
} fontset_item_t;
enum {
FONT_MAIN,
FONT_FALLBACK,
FONT_MAX
};
static xcb_connection_t *c;
static xcb_window_t win;
static xcb_drawable_t canvas;
static xcb_gcontext_t draw_gc;
static xcb_gcontext_t clear_gc;
static xcb_gcontext_t underl_gc;
static int bar_width;
static fontset_item_t fontset[FONT_MAX];
static fontset_item_t *sel_font = &fontset[FONT_MAIN];
static const unsigned palette[] = {COLOR0,COLOR1,COLOR2,COLOR3,COLOR4,COLOR5,COLOR6,COLOR7,COLOR8,COLOR9};
void
fill_rect (int color, int x, int y, int width, int height)
xcb_set_bg (int i)
{
xcb_change_gc (c, draw_gc , XCB_GC_BACKGROUND, (const unsigned []){ palette[i] });
xcb_change_gc (c, clear_gc , XCB_GC_FOREGROUND, (const unsigned []){ palette[i] });
xcb_change_gc (c, underl_gc, XCB_GC_FOREGROUND, (const unsigned []){ palette[i] });
}
void
xcb_set_fg (int i)
{
xcb_change_gc (c, draw_gc , XCB_GC_FOREGROUND, (const unsigned []){ palette[i] });
}
void
xcb_set_ud (int i)
{
xcb_change_gc (c, underl_gc, XCB_GC_FOREGROUND, (const unsigned []){ palette[i] });
}
void
xcb_fill_rect (xcb_gcontext_t gc, int x, int y, int width, int height)
{
xcb_change_gc (c, gc, XCB_GC_FOREGROUND, (const unsigned []){ pal[color] });
xcb_poly_fill_rectangle (c, canvas, gc, 1, (const xcb_rectangle_t []){ { x, y, width, height } });
}
/* libc doesn't give a shit to -fshort-wchar, so here's our wcslen */
size_t
wcslen_ (wchar_t *s) {
size_t len;
for (len = 0; *s; s++, len++);
return len;
void
xcb_set_fontset (int i)
{
sel_font = &fontset[i&1];
xcb_change_gc (c, draw_gc , XCB_GC_FONT, (const unsigned []){ sel_font->xcb_ft });
}
int
draw_string (int x, int align, int fgcol, int bgcol, int udcol, wchar_t *text)
draw_char (int x, int align, wchar_t ch)
{
int chunk_len;
int chars_done;
int pos_x;
int str_lenght;
int str_width;
pos_x = x;
chars_done = 0;
str_lenght = MIN(bar_width / font_width, wcslen_ (text));
str_width = str_lenght * font_width;
if (str_width == 0)
return 0;
switch (align) {
case 1:
xcb_copy_area (c, canvas, canvas, gc, bar_width / 2 - pos_x / 2, 0,
bar_width / 2 - (pos_x + str_width) / 2, 0, pos_x, BAR_HEIGHT);
pos_x = bar_width / 2 - (pos_x + str_width) / 2 + pos_x;
xcb_copy_area (c, canvas, canvas, draw_gc, bar_width / 2 - x / 2, 0,
bar_width / 2 - (x + sel_font->width) / 2, 0, x, BAR_HEIGHT);
x = bar_width / 2 - (x + sel_font->width) / 2 + x;
break;
case 2:
xcb_copy_area (c, canvas, canvas, gc, bar_width - pos_x, 0,
bar_width - pos_x - str_width, 0, pos_x, BAR_HEIGHT);
pos_x = bar_width - str_width;
xcb_copy_area (c, canvas, canvas, draw_gc, bar_width - x, 0,
bar_width - x - sel_font->width, 0, x, BAR_HEIGHT);
x = bar_width - sel_font->width;
break;
}
/* Draw the background first */
fill_rect (bgcol, pos_x, 0, str_width, BAR_HEIGHT);
xcb_fill_rect (clear_gc, x, 0, sel_font->width, BAR_HEIGHT);
/* Draw the underline */
if (BAR_UNDERLINE_HEIGHT)
fill_rect (udcol, pos_x, BAR_HEIGHT-BAR_UNDERLINE_HEIGHT, str_width, BAR_UNDERLINE_HEIGHT);
xcb_fill_rect (underl_gc, x, BAR_HEIGHT-BAR_UNDERLINE_HEIGHT, sel_font->width, BAR_UNDERLINE_HEIGHT);
/* Setup the colors */
xcb_change_gc (c, gc, XCB_GC_FOREGROUND, (const unsigned []){ pal[fgcol] });
xcb_change_gc (c, gc, XCB_GC_BACKGROUND, (const unsigned []){ pal[bgcol] });
/* xcb accepts string in UCS-2 BE, so swap */
ch = (ch >> 8) | (ch << 8);
do {
chunk_len = MIN(str_lenght - chars_done, 255);
/* String baseline coordinates */
xcb_image_text_16 (c, chunk_len, canvas, gc, pos_x,
BAR_HEIGHT / 2 + font_height / 2 - font_descent, (xcb_char2b_t *)text + chars_done);
chars_done += chunk_len;
pos_x = chars_done * font_width;
} while (chars_done < str_lenght);
/* String baseline coordinates */
xcb_image_text_16 (c, 1, canvas, draw_gc, x, BAR_HEIGHT / 2 + sel_font->height / 2 - sel_font->descent,
(xcb_char2b_t *)&ch);
return pos_x;
return sel_font->width;
}
void
parse (char *text)
{
wchar_t parsed_text[2048] = {0, };
wchar_t *q = parsed_text;
char *p = text;
unsigned char *p = text;
int pos_x = 0;
int align = 0;
int fgcol = 1;
int bgcol = 0;
int udcol = 0;
fill_rect (0, 0, 0, bar_width, BAR_HEIGHT);
xcb_fill_rect (clear_gc, 0, 0, bar_width, BAR_HEIGHT);
for (;;) {
if (*p == 0x0 || *p == 0xA || (*p == '\\' && p++ && *p != '\\' && strchr ("fbulcr", *p))) {
pos_x += draw_string (pos_x, align, fgcol, bgcol, udcol, parsed_text);
switch (*p++) {
case 0x0: /* EOL */
case 0xA: /* NL */
return;
if (*p == '\0')
return;
if (*p == '\n')
return;
case 'f':
if (*p == 'r') *p = '1';
if (isdigit (*p)) fgcol = (*p++)-'0';
break;
case 'b':
if (*p == 'r') *p = '0';
if (isdigit (*p)) bgcol = (*p++)-'0';
break;
case 'u':
if (*p == 'r') *p = '0';
if (isdigit (*p)) udcol = (*p++)-'0';
break;
if (*p == '\\' && p++ && *p != '\\' && strchr ("fbulcr", *p)) {
switch (*p++) {
case 'f':
if (!isdigit (*p)) *p = '1';
xcb_set_fg ((*p++)-'0');
break;
case 'b':
if (!isdigit (*p)) *p = '0';
xcb_set_bg ((*p++)-'0');
break;
case 'u':
if (!isdigit (*p)) *p = '0';
xcb_set_ud ((*p++)-'0');
break;
case 'l':
align = 0;
pos_x = 0;
break;
case 'c':
align = 1;
pos_x = 0;
break;
case 'r':
align = 2;
pos_x = 0;
break;
}
q = parsed_text;
case 'l':
align = 0;
pos_x = 0;
break;
case 'c':
align = 1;
pos_x = 0;
break;
case 'r':
align = 2;
pos_x = 0;
break;
}
} else { /* utf-8 -> ucs-2 */
wchar_t t;
if (!(p[0] & 0x80)) {
*q++ = p[0] << 8;
p += 1;
t = p[0];
p += 1;
}
else if ((p[0] & 0xe0) == 0xc0 && (p[1] & 0xc0) == 0x80) {
wchar_t t = (p[0] & 0x1f) << 6 | p[1] & 0x3f;
*q++ = (t >> 8) | (t << 8);
p += 2;
t = (p[0] & 0x1f) << 6 | p[1] & 0x3f;
p += 2;
}
else if ((p[0] & 0xf0) == 0xe0 && (p[1] & 0xc0) == 0x80 && (p[2] & 0xc0) == 0x80) {
wchar_t t = (p[0] & 0xf) << 12 | (p[1] & 0x3f) << 6 | p[2] & 0x3f;
*q++ = (t >> 8) | (t << 8);
p += 3;
t = (p[0] & 0xf) << 12 | (p[1] & 0x3f) << 6 | p[2] & 0x3f;
p += 3;
}
else { /* ASCII chars > 127 go in the extended latin range */
t = 0xc200 + p[0];
p += 1;
}
/* The character is outside the main font charset, use the fallback */
if (t < fontset[FONT_MAIN].char_min || t > fontset[FONT_MAIN].char_max)
xcb_set_fontset (FONT_FALLBACK);
else
xcb_set_fontset (FONT_MAIN);
pos_x += draw_char (pos_x, align, t);
}
*q = 0;
}
}
void
cleanup (void)
int
font_load (const char **font_list)
{
xcb_free_pixmap (c, canvas);
xcb_destroy_window (c, win);
xcb_free_gc (c, gc);
xcb_disconnect (c);
}
xcb_query_font_cookie_t queryreq;
xcb_query_font_reply_t *font_info;
xcb_void_cookie_t cookie;
xcb_font_t font;
int max_height;
void
sighandle (int signal)
{
if (signal == SIGINT || signal == SIGTERM) exit (0);
max_height = -1;
for (int i = 0; i < FONT_MAX; i++) {
font = xcb_generate_id (c);
cookie = xcb_open_font_checked (c, font, strlen (font_list[i]), font_list[i]);
if (xcb_request_check (c, cookie)) {
fprintf (stderr, "Could not load font %s\n", font_list[i]);
return 1;
}
queryreq = xcb_query_font (c, font);
font_info = xcb_query_font_reply (c, queryreq, NULL);
fontset[i].xcb_ft = font;
fontset[i].width = font_info->max_bounds.character_width;
fontset[i].descent = font_info->font_descent;
fontset[i].char_max= font_info->max_byte1 << 8 | font_info->max_char_or_byte2;
fontset[i].char_min= font_info->min_byte1 << 8 | font_info->min_char_or_byte2;
max_height = MAX(font_info->font_ascent + font_info->font_descent, max_height);
free (font_info);
}
/* To have an uniform alignment */
for (int i = 0; i < FONT_MAX; i++)
fontset[i].height = max_height;
return 0;
}
int
set_ewmh_atoms (void)
set_ewmh_atoms (xcb_window_t root)
{
xcb_intern_atom_cookie_t cookies[5];
xcb_intern_atom_reply_t *reply;
@ -206,7 +249,6 @@ set_ewmh_atoms (void)
reply = xcb_intern_atom_reply (c, cookies[4], NULL);
atoms[4] = reply->atom; free (reply);
/* Wait until the wm is spawned */
do {
reply1 = xcb_get_property_reply (c, xcb_get_property (c, 0, root, atoms[4], XCB_ATOM_ATOM, 0, -1), NULL);
} while (!xcb_get_property_value_length (reply1));
@ -214,7 +256,7 @@ set_ewmh_atoms (void)
compliance_lvl = 0;
for (xcb_atom_t *a = xcb_get_property_value (reply1);
a != xcb_get_property_value_end (reply1).data;
a && a != xcb_get_property_value_end (reply1).data;
a++)
{
/* Set the _NET_WM_WINDOW_TYPE_DOCK state */
@ -239,6 +281,7 @@ set_ewmh_atoms (void)
compliance_lvl++;
}
}
free (reply1);
/* If the wm supports at least 2 NET atoms then mark as compliant */
return (compliance_lvl > 1);
@ -247,9 +290,8 @@ set_ewmh_atoms (void)
void
init (void)
{
xcb_font_t font;
xcb_screen_t *scr;
xcb_query_font_reply_t *font_info;
xcb_window_t root;
/* Connect to X */
c = xcb_connect (NULL, NULL);
@ -257,22 +299,16 @@ init (void)
fprintf (stderr, "Couldn't connect to X\n");
exit (1);
}
/* Grab infos from the first screen */
scr = xcb_setup_roots_iterator (xcb_get_setup (c)).data;
bar_width = scr->width_in_pixels;
root = scr->root;
/* Load the font */
font = xcb_generate_id (c);
if (xcb_request_check (c, xcb_open_font_checked (c, font, strlen(BAR_FONT), BAR_FONT))) {
fprintf (stderr, "Couldn't load the font\n");
if (font_load ((const char* []){ BAR_MAIN_FONT, BAR_FALLBACK_FONT }))
exit (1);
}
/* Grab infos from the font */
font_info = xcb_query_font_reply (c, xcb_query_font (c, font), NULL);
font_height = font_info->font_ascent + font_info->font_descent;
font_width = font_info->max_bounds.character_width;
font_descent = font_info->font_descent;
free (font_info);
/* Create the main window */
win = xcb_generate_id (c);
xcb_create_window (c, XCB_COPY_FROM_PARENT, win, root, 0,
@ -282,29 +318,57 @@ init (void)
0,
#endif
bar_width, BAR_HEIGHT, 0, XCB_WINDOW_CLASS_INPUT_OUTPUT, scr->root_visual,
XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK, (const unsigned []){ pal[0], XCB_EVENT_MASK_EXPOSURE });
XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK, (const unsigned []){ palette[0], XCB_EVENT_MASK_EXPOSURE });
/* Set EWMH hints */
int ewmh_docking = set_ewmh_atoms ();
int ewmh_docking = set_ewmh_atoms (root);
/* Quirk for wm not supporting the EWMH docking method */
xcb_change_window_attributes (c, win, XCB_CW_OVERRIDE_REDIRECT, (const unsigned []){ !ewmh_docking });
/* Create a temporary canvas */
canvas = xcb_generate_id (c);
xcb_create_pixmap (c, scr->root_depth, canvas, root, bar_width, BAR_HEIGHT);
/* Create the gc for drawing */
gc = xcb_generate_id (c);
xcb_create_gc (c, gc, root, XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_FONT,
(const unsigned []){ pal[1], pal[0], font });
/* Get rid of the font */
xcb_close_font (c, font);
draw_gc = xcb_generate_id (c);
xcb_create_gc (c, draw_gc, root, XCB_GC_FOREGROUND | XCB_GC_BACKGROUND, (const unsigned []){ palette[1], palette[0] });
clear_gc = xcb_generate_id (c);
xcb_create_gc (c, clear_gc, root, XCB_GC_FOREGROUND, (const unsigned []){ palette[0] });
underl_gc = xcb_generate_id (c);
xcb_create_gc (c, underl_gc, root, XCB_GC_FOREGROUND, (const unsigned []){ palette[0] });
/* Make the bar visible */
xcb_map_window (c, win);
xcb_flush (c);
}
void
cleanup (void)
{
xcb_close_font (c, fontset[FONT_MAIN].xcb_ft);
xcb_close_font (c, fontset[FONT_FALLBACK].xcb_ft);
xcb_free_pixmap (c, canvas);
xcb_destroy_window (c, win);
xcb_free_gc (c, draw_gc);
xcb_free_gc (c, clear_gc);
xcb_free_gc (c, underl_gc);
xcb_disconnect (c);
}
void
sighandle (int signal)
{
if (signal == SIGINT || signal == SIGTERM)
exit (0);
}
int
main (int argc, char **argv)
{
static char input[1024] = {0, };
char input[1024] = {0, };
struct pollfd pollin[2] = {
{ .fd = STDIN_FILENO, .events = POLLIN },
{ .fd = -1 , .events = POLLIN },
@ -335,7 +399,7 @@ main (int argc, char **argv)
/* Get the fd to Xserver */
pollin[1].fd = xcb_get_file_descriptor (c);
fill_rect (0, 0, 0, bar_width, BAR_HEIGHT);
xcb_fill_rect (clear_gc, 0, 0, bar_width, BAR_HEIGHT);
for (;;) {
int redraw = 0;
@ -366,7 +430,8 @@ main (int argc, char **argv)
}
if (redraw) /* Copy our temporary pixmap onto the window */
xcb_copy_area (c, canvas, win, gc, 0, 0, 0, 0, bar_width, BAR_HEIGHT);
xcb_copy_area (c, canvas, win, draw_gc, 0, 0, 0, 0, bar_width, BAR_HEIGHT);
xcb_flush (c);
}

3
config.def.h
View File

@ -5,7 +5,8 @@
/* Whether to put the bar at the screen bottom or not */
#define BAR_BOTTOM 0
/* The font used for the bar */
#define BAR_FONT "-*-terminus-medium-r-normal-*-12-*-*-*-c-*-*-1"
#define BAR_MAIN_FONT "-*-terminus-medium-r-normal-*-12-*-*-*-c-*-*-1"
#define BAR_FALLBACK_FONT "fixed"
/* Color palette */
#define COLOR0 0x1A1A1A /* background */
#define COLOR1 0xA9A9A9 /* foreground */