+#undef I3__FILE__
+#define I3__FILE__ "sighandler.c"
/*
* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
- *
- * © 2009-2010 Michael Stapelberg and contributors
+ * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
* © 2009-2010 Jan-Erik Rediger
*
- * See file LICENSE for license information.
- *
- * sighandler.c: contains all functions for signal handling
+ * sighandler.c: Interactive crash dialog upon SIGSEGV/SIGABRT/SIGFPE (offers
+ * to restart inplace).
*
*/
+#include "all.h"
+
#include <ev.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
#include <iconv.h>
#include <signal.h>
-#include <xcb/xcb.h>
-#include <xcb/xcb_aux.h>
#include <xcb/xcb_event.h>
-#include <xcb/xcb_keysyms.h>
#include <X11/keysym.h>
-#include "all.h"
-
static xcb_gcontext_t pixmap_gc;
static xcb_pixmap_t pixmap;
static int raised_signal;
* Draw the window containing the info text
*
*/
-static int sig_draw_window(xcb_window_t win, int width, int height, int font_height) {
+static int sig_draw_window(xcb_window_t win, int width, int height, int font_height, i3String **crash_text_i3strings) {
/* re-draw the background */
xcb_rectangle_t border = { 0, 0, width, height},
inner = { 2, 2, width - 4, height - 4};
- xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel("#FF0000"));
+ xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND, (uint32_t[]){ get_colorpixel("#FF0000") });
xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &border);
- xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel("#000000"));
+ xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND, (uint32_t[]){ get_colorpixel("#000000") });
xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &inner);
/* restore font color */
- xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel("#FFFFFF"));
-
- for (int i = 0; i < sizeof(crash_text) / sizeof(char*); i++) {
- int text_len = strlen(crash_text[i]);
- char *full_text = convert_utf8_to_ucs2(crash_text[i], &text_len);
- xcb_image_text_16(conn, text_len, pixmap, pixmap_gc, 8 /* X */,
- 3 + (i + 1) * font_height /* Y = baseline of font */,
- (xcb_char2b_t*)full_text);
- free(full_text);
+ set_font_colors(pixmap_gc, get_colorpixel("#FFFFFF"), get_colorpixel("#000000"));
+
+ for (int i = 0; crash_text_i3strings[i] != NULL; ++i) {
+ draw_text((char *)i3string_as_ucs2(crash_text_i3strings[i]), i3string_get_num_glyphs(crash_text_i3strings[i]), true, pixmap, pixmap_gc,
+ 8, 5 + i * font_height, width - 16);
}
/* Copy the contents of the pixmap to the real window */
int crash_text_num = sizeof(crash_text) / sizeof(char*);
int height = 13 + (crash_text_num * config.font.height);
+ int crash_text_length = sizeof(crash_text) / sizeof(char*);
+ i3String **crash_text_i3strings = smalloc(sizeof(i3String *) * (crash_text_length + 1));
+ /* Pre-compute i3Strings for our text */
+ for (int i = 0; i < crash_text_length; ++i) {
+ crash_text_i3strings[i] = i3string_from_utf8(crash_text[i]);
+ }
+ crash_text_i3strings[crash_text_length] = NULL;
/* calculate width for longest text */
- int text_len = strlen(crash_text[crash_text_longest]);
- char *longest_text = convert_utf8_to_ucs2(crash_text[crash_text_longest], &text_len);
- int font_width = predict_text_width(longest_text, text_len);
+ int font_width = predict_text_width((char *)i3string_as_ucs2(crash_text_i3strings[crash_text_longest]), i3string_get_num_glyphs(crash_text_i3strings[crash_text_longest]), true);
int width = font_width + 20;
/* Open a popup window on each virtual screen */
xcb_create_pixmap(conn, root_depth, pixmap, win, width, height);
xcb_create_gc(conn, pixmap_gc, pixmap, 0, 0);
- /* Create graphics context */
- xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FONT, config.font.id);
-
/* Grab the keyboard to get all input */
xcb_grab_keyboard(conn, false, win, XCB_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
xcb_grab_pointer(conn, false, win, XCB_NONE, XCB_GRAB_MODE_ASYNC,
XCB_GRAB_MODE_ASYNC, win, XCB_NONE, XCB_CURRENT_TIME);
- sig_draw_window(win, width, height, config.font.height);
+ sig_draw_window(win, width, height, config.font.height, crash_text_i3strings);
xcb_flush(conn);
}
* Setup signal handlers to safely handle SIGSEGV and SIGFPE
*
*/
-void setup_signal_handler() {
+void setup_signal_handler(void) {
struct sigaction action;
action.sa_sigaction = handle_signal;
action.sa_flags = SA_NODEFER | SA_RESETHAND | SA_SIGINFO;
sigemptyset(&action.sa_mask);
- if (sigaction(SIGSEGV, &action, NULL) == -1 ||
+ /* Catch all signals with default action "Core", see signal(7) */
+ if (sigaction(SIGQUIT, &action, NULL) == -1 ||
+ sigaction(SIGILL, &action, NULL) == -1 ||
sigaction(SIGABRT, &action, NULL) == -1 ||
- sigaction(SIGFPE, &action, NULL) == -1)
+ sigaction(SIGFPE, &action, NULL) == -1 ||
+ sigaction(SIGSEGV, &action, NULL) == -1)
ELOG("Could not setup signal handler");
}