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Better screen sorting. Fix a use after free. Clone/overlapping monitor detection

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This commit is contained in:
LemonBoy 2014-02-18 00:23:35 +00:00
parent a66f6bb097
commit 3f4ed1600a
1 changed files with 29 additions and 15 deletions
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44
bar.c
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@ -396,7 +396,15 @@ monitor_add (monitor_t *mon)
int
rect_sort_cb (const void *p1, const void *p2)
{
return ((xcb_rectangle_t *)p1)->x - ((xcb_rectangle_t *)p2)->x;
const xcb_rectangle_t *r1 = (xcb_rectangle_t *)p1;
const xcb_rectangle_t *r2 = (xcb_rectangle_t *)p2;
if (r1->x < r2->x || r1->y < r2->y)
return -1;
if (r1->x > r2->x || r1->y > r2->y)
return 1;
return 0;
}
void
@ -421,9 +429,10 @@ get_randr_outputs(void)
num = xcb_randr_get_screen_resources_current_outputs_length(rres_reply);
outputs = xcb_randr_get_screen_resources_current_outputs(rres_reply);
config_timestamp = rres_reply->config_timestamp;
free(rres_reply);
if (num < 1) {
fprintf(stderr, "Failed to get current randr outputs\n");
free(rres_reply);
return;
}
@ -450,15 +459,19 @@ get_randr_outputs(void)
free(output_reply);
continue;
}
rects[i].x = crtc_reply->x;
rects[i].y = crtc_reply->y;
rects[i].width = crtc_reply->width;
rects[i].height = crtc_reply->height;
if (crtc_reply->rotation&(XCB_RANDR_ROTATION_ROTATE_90|XCB_RANDR_ROTATION_ROTATE_270))
rects[i] = (xcb_rectangle_t){ crtc_reply->x, crtc_reply->y, crtc_reply->height, crtc_reply->width };
else
rects[i] = (xcb_rectangle_t){ crtc_reply->x, crtc_reply->y, crtc_reply->width, crtc_reply->height };
free(crtc_reply);
free(output_reply);
cnt++;
}
free(rres_reply);
if (cnt < 1) {
fprintf(stderr, "No usable randr outputs\n");
return;
@ -468,14 +481,16 @@ get_randr_outputs(void)
for (i = 0; i < num; i++) {
if (rects[i].width == 0)
continue;
for (j = 0; j < num; j++) {
if (i == j || rects[j].width == 0 || rects[i].x != rects[j].x || rects[i].y != rects[j].y)
continue;
/* clone found, only keep one */
rects[i].width = (rects[i].width < rects[j].width) ? rects[i].width : rects[j].width;
rects[i].height = (rects[i].height < rects[j].height) ? rects[i].height : rects[j].height;
rects[j].width = 0;
cnt--;
/* Does I countain J ? */
if (i != j && rects[j].width) {
if (rects[j].x >= rects[i].x && rects[j].x <= rects[i].x + rects[j].width &&
rects[j].y >= rects[i].y && rects[j].y <= rects[i].y + rects[i].height) {
rects[j].width = 0;
cnt--;
}
}
}
}
@ -806,8 +821,7 @@ main (int argc, char **argv)
if (redraw) { /* Copy our temporary pixmap onto the window */
for (monitor_t *mon = monhead; mon; mon = mon->next) {
// if (mon->width)
xcb_copy_area (c, canvas, mon->window, draw_gc, mon->x, 0, 0, 0, mon->width, cfg.height);
xcb_copy_area (c, canvas, mon->window, draw_gc, mon->x, 0, 0, 0, mon->width, cfg.height);
}
}