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Redraw on expose (#1).

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This commit is contained in:
LemonBoy 2012-07-17 01:17:11 +02:00
parent 8beab7672d
commit a7dbc379bf
2 changed files with 26 additions and 12 deletions
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36
bar.c
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@ -3,6 +3,9 @@
#include <string.h>
#include <ctype.h>
#include <signal.h>
#include <poll.h>
#include <getopt.h>
#include <unistd.h>
#include <xcb/xcb.h>
#include "config.h"
@ -14,10 +17,9 @@ static int ft_height, ft_width;
static xcb_window_t root, win;
static xcb_gcontext_t gc;
static int bw, bh;
static const int pal[] = {COLOR0,COLOR1,COLOR2,COLOR3,COLOR4,COLOR5,COLOR6,COLOR7,COLOR8,COLOR9};
static const uint32_t pal[] = {COLOR0,COLOR1,COLOR2,COLOR3,COLOR4,COLOR5,COLOR6,COLOR7,COLOR8,COLOR9};
static xcb_drawable_t canvas;
#define MIN(a,b) ((a > b ? b : a))
int
@ -42,7 +44,7 @@ draw (int x, int align, int fgcol, int bgcol, char *text)
}
/* Draw the background first */
xcb_change_gc (c, gc, XCB_GC_FOREGROUND, (const uint32_t []){ pal[bgcol] });
xcb_poly_fill_rectangle (c, canvas, gc, 1, (const xcb_rectangle_t []){ pos_x, 0, strw, BAR_HEIGHT });
xcb_poly_fill_rectangle (c, canvas, gc, 1, (const xcb_rectangle_t []){ {pos_x, 0, strw, BAR_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] });
@ -70,7 +72,7 @@ parse (char *text)
int bgcol = 0;
xcb_change_gc (c, gc, XCB_GC_FOREGROUND, (const uint32_t []){ pal[0] });
xcb_poly_fill_rectangle (c, canvas, gc, 1, (const xcb_rectangle_t []){ 0, 0, bw, BAR_HEIGHT });
xcb_poly_fill_rectangle (c, canvas, gc, 1, (const xcb_rectangle_t []){ {0, 0, bw, BAR_HEIGHT} });
for (;;) {
if (*p == 0x0 || *p == 0xA || (*p == '\\' && p++ && *p != '\\' && strchr ("fblcr", *p))) {
pos_x += draw (pos_x, align, fgcol, bgcol, parsed_text);
@ -103,8 +105,7 @@ cleanup (void)
void
sighandle (int signal)
{
if (signal == SIGINT || signal == SIGTERM)
exit (0);
if (signal == SIGINT || signal == SIGTERM) exit (0);
}
void
@ -138,8 +139,8 @@ init (void)
/* Create the main window */
win = xcb_generate_id (c);
xcb_create_window (c, XCB_COPY_FROM_PARENT, win, root, 0, 0, bw, bh, 0, XCB_WINDOW_CLASS_INPUT_OUTPUT,
scr->root_visual, XCB_CW_BACK_PIXEL | XCB_CW_OVERRIDE_REDIRECT,
(const uint32_t []){ pal[0], 1 });
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 });
/* Create a temporary canvas */
canvas = xcb_generate_id (c);
xcb_create_pixmap (c, scr->root_depth, canvas, root, bw, BAR_HEIGHT);
@ -158,6 +159,7 @@ int
main (int argc, char **argv)
{
static char input[1024] = {0, };
xcb_expose_event_t *e;
int permanent = 0;
char ch;
@ -174,14 +176,26 @@ main (int argc, char **argv)
signal (SIGTERM, sighandle);
init ();
while (fgets (input, sizeof(input), stdin)) {
xcb_change_gc (c, gc, XCB_GC_FOREGROUND, (const uint32_t []){ pal[0] });
xcb_poly_fill_rectangle (c, canvas, gc, 1, (const xcb_rectangle_t []){ {0, 0, bw, BAR_HEIGHT} });
struct pollfd pollin = { .fd = STDIN_FILENO, .events = POLLIN | POLLHUP};
for (;;) {
if (poll (&pollin, 1, -1) > 0) { /* Read from stdin */
if (pollin.revents & POLLHUP) break; /* No more data */
fgets (input, sizeof(input), stdin);
parse (input);
xcb_copy_area (c, canvas, win, gc, 0, 0, 0, 0, bw, BAR_HEIGHT);
}
if ((e = (xcb_expose_event_t *)xcb_poll_for_event (c))) { /* Handle the xcb expose event */
if (e && (e->response_type & ~0x80) == XCB_EXPOSE) {
xcb_copy_area (c, canvas, win, gc, e->x, e->y, e->x, e->y, e->width, e->height);
free (e);
}
}
xcb_flush (c);
}
/* There's no more data, but the user still wants to see it */
while (permanent) sleep(1);
while (permanent) sleep (1);
return 0;
}

0
config.h → config.def.h
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