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Fixed a memory leak. Cleaned up a bit the code.

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This commit is contained in:
LemonBoy 2012-07-21 17:41:57 +02:00
parent 741b9da4a1
commit ba6e51059e
2 changed files with 81 additions and 37 deletions
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2
Makefile
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@ -1,6 +1,6 @@
CC ?= gcc
STRIP ?= strip
CFLAGS ?= -fshort-wchar -Os
CFLAGS ?= --std=c99 -fshort-wchar -Os
LDFLAGS += -lxcb
CFDEBUG = -g3 -pedantic -Wall -Wunused-parameter -Wlong-long\
-Wsign-conversion -Wconversion -Wimplicit-function-declaration

116
bar.c
View File

@ -18,14 +18,14 @@ static xcb_gcontext_t gc;
static xcb_drawable_t canvas;
static int font_height, font_width, font_descent;
static int bar_width;
static const uint32_t pal[] = {COLOR0,COLOR1,COLOR2,COLOR3,COLOR4,COLOR5,COLOR6,COLOR7,COLOR8,COLOR9};
static const unsigned pal[] = {COLOR0,COLOR1,COLOR2,COLOR3,COLOR4,COLOR5,COLOR6,COLOR7,COLOR8,COLOR9};
#define MIN(a,b) ((a > b ? b : a))
void
fill_rect (int color, int x, int y, int width, int height)
{
xcb_change_gc (c, gc, XCB_GC_FOREGROUND, (const uint32_t []){ pal[color] });
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 } });
}
@ -33,45 +33,62 @@ fill_rect (int color, int x, int y, int width, int height)
size_t
wcslen_ (wchar_t *s) {
size_t len;
for (len = 0; *s; s++, len++);
return len;
}
int
draw_string (int x, int align, int fgcol, int bgcol, int udcol, wchar_t *text)
{
int done = 0;
int pos_x = x;
int len = MIN(bar_width / font_width, wcslen_ (text));
int strw = len * font_width;
int chunk_len;
int chars_done;
int pos_x;
int str_lenght;
int str_width;
pos_x = x;
chars_done = 0;
if (!strw) return 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 + strw) / 2, 0, pos_x, BAR_HEIGHT);
pos_x = bar_width / 2 - (pos_x + strw) / 2 + pos_x;
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;
break;
case 2:
xcb_copy_area (c, canvas, canvas, gc, bar_width - pos_x, 0,
bar_width - pos_x - strw, 0, pos_x, BAR_HEIGHT);
pos_x = bar_width - strw;
bar_width - pos_x - str_width, 0, pos_x, BAR_HEIGHT);
pos_x = bar_width - str_width;
break;
}
/* Draw the background first */
fill_rect (bgcol, pos_x, 0, strw, BAR_HEIGHT);
fill_rect (bgcol, pos_x, 0, str_width, BAR_HEIGHT);
/* Draw the underline */
if (BAR_UNDERLINE_HEIGHT) fill_rect (udcol, pos_x, BAR_HEIGHT-BAR_UNDERLINE_HEIGHT, strw, BAR_UNDERLINE_HEIGHT);
if (BAR_UNDERLINE_HEIGHT)
fill_rect (udcol, pos_x, BAR_HEIGHT-BAR_UNDERLINE_HEIGHT, str_width, BAR_UNDERLINE_HEIGHT);
/* Setup the colors */
xcb_change_gc (c, gc, XCB_GC_FOREGROUND, (const uint32_t []){ pal[fgcol] });
xcb_change_gc (c, gc, XCB_GC_BACKGROUND, (const uint32_t []){ pal[bgcol] });
xcb_change_gc (c, gc, XCB_GC_FOREGROUND, (const unsigned []){ pal[fgcol] });
xcb_change_gc (c, gc, XCB_GC_BACKGROUND, (const unsigned []){ pal[bgcol] });
do {
xcb_image_text_16 (c, MIN(len - done, 255), canvas, gc, pos_x, /* String baseline coordinates */
BAR_HEIGHT / 2 + font_height / 2 - font_descent, (xcb_char2b_t *)text + done);
done += MIN(len - done, 255);
pos_x = done * font_width;
} while (done < len);
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);
return pos_x;
}
@ -92,18 +109,40 @@ parse (char *text)
int udcol = 0;
fill_rect (0, 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: return; /* EOL */
case 0xA: return; /* NL */
case 'f': if (*p == 'r') *p = '1'; if (isdigit (*p)) { fgcol = *p-'0'; } p++; break;
case 'b': if (*p == 'r') *p = '0'; if (isdigit (*p)) { bgcol = *p-'0'; } p++; break;
case 'u': if (*p == 'r') *p = '0'; if (isdigit (*p)) { udcol = *p-'0'; } p++; 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;
case 0x0: /* EOL */
case 0xA: /* NL */
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;
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;
} else { /* utf-8 -> ucs-2 */
@ -142,7 +181,7 @@ sighandle (int signal)
}
void
set_ewmh_props (void)
set_ewmh_atoms (void)
{
xcb_intern_atom_cookie_t cookies[4];
xcb_atom_t atoms[4];
@ -162,11 +201,14 @@ set_ewmh_props (void)
reply = xcb_intern_atom_reply (c, cookies[3], NULL);
atoms[3] = reply->atom; free (reply);
/* Set the _NET_WM_WINDOW_TYPE_DOCK state */
xcb_change_property (c, XCB_PROP_MODE_REPLACE, win, atoms[0], XCB_ATOM_ATOM, 32, 1, &atoms[1]);
/* Show on every desktop */
xcb_change_property (c, XCB_PROP_MODE_REPLACE, win, atoms[2], XCB_ATOM_CARDINAL, 32, 1,
(const int []){ 0xffffffff } );
(const unsigned []){ 0xffffffff } );
/* Set the window geometry */
xcb_change_property (c, XCB_PROP_MODE_REPLACE, win, atoms[3], XCB_ATOM_CARDINAL, 32, 12,
(const int []) { 0, 0, BAR_HEIGHT, 0, 0, 0, 0, 0, bar_width, 0, 0} );
(const unsigned []) { 0, 0, BAR_HEIGHT, 0, 0, 0, 0, 0, bar_width, 0, 0} );
}
void
@ -197,20 +239,22 @@ init (void)
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, 0, bar_width, BAR_HEIGHT,
0, XCB_WINDOW_CLASS_INPUT_OUTPUT, scr->root_visual, XCB_CW_BACK_PIXEL |
XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK, (const uint32_t []){ pal[0], 1, XCB_EVENT_MASK_EXPOSURE });
xcb_create_window (c, XCB_COPY_FROM_PARENT, win, root, 0, 0, bar_width, BAR_HEIGHT,
0, XCB_WINDOW_CLASS_INPUT_OUTPUT, scr->root_visual,
XCB_CW_BACK_PIXEL | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK,
(const unsigned []){ pal[0], 1, XCB_EVENT_MASK_EXPOSURE });
/* Set EWMH hints */
set_ewmh_props ();
set_ewmh_atoms ();
/* 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 uint32_t []){ pal[1], pal[0], font });
(const unsigned []){ pal[1], pal[0], font });
/* Get rid of the font */
xcb_close_font (c, font);
/* Make the bar visible */