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Retab sighandler.c

This commit is contained in:
Axel Wagner 2010-12-30 21:15:55 +01:00 committed by Michael Stapelberg
parent fb6d117c42
commit 6ec468ba1e
2 changed files with 115 additions and 115 deletions
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2
include/sighandler.h
View File

@ -1,5 +1,5 @@
/* /*
* vim:ts=8:expandtab * vim:ts=4:sw=4:expandtab
* *
* i3 - an improved dynamic tiling window manager * i3 - an improved dynamic tiling window manager
* *

228
src/sighandler.c
View File

@ -1,5 +1,5 @@
/* /*
* vim:ts=8:expandtab * vim:ts=4:sw=4:expandtab
* *
* i3 - an improved dynamic tiling window manager * i3 - an improved dynamic tiling window manager
* *
@ -38,11 +38,11 @@ static xcb_pixmap_t pixmap;
static int raised_signal; static int raised_signal;
static char *crash_text[] = { static char *crash_text[] = {
"i3 just crashed.", "i3 just crashed.",
"To debug this problem, either attach gdb now", "To debug this problem, either attach gdb now",
"or press 'e' to exit and get a core-dump.", "or press 'e' to exit and get a core-dump.",
"If you want to keep your session,", "If you want to keep your session,",
"press 'r' to restart i3 in-place." "press 'r' to restart i3 in-place."
}; };
static int crash_text_longest = 1; static int crash_text_longest = 1;
@ -51,31 +51,31 @@ static int crash_text_longest = 1;
* *
*/ */
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) {
/* re-draw the background */ /* re-draw the background */
xcb_rectangle_t border = { 0, 0, width, height}, xcb_rectangle_t border = { 0, 0, width, height},
inner = { 2, 2, width - 4, height - 4}; inner = { 2, 2, width - 4, height - 4};
xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel("#FF0000")); xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel("#FF0000"));
xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &border); 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_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel("#000000"));
xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &inner); xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &inner);
/* restore font color */ /* restore font color */
xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel("#FFFFFF")); xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel("#FFFFFF"));
for (int i = 0; i < sizeof(crash_text) / sizeof(char*); i++) { for (int i = 0; i < sizeof(crash_text) / sizeof(char*); i++) {
int text_len = strlen(crash_text[i]); int text_len = strlen(crash_text[i]);
char *full_text = convert_utf8_to_ucs2(crash_text[i], &text_len); char *full_text = convert_utf8_to_ucs2(crash_text[i], &text_len);
xcb_image_text_16(conn, text_len, pixmap, pixmap_gc, 8 /* X */, xcb_image_text_16(conn, text_len, pixmap, pixmap_gc, 8 /* X */,
3 + (i + 1) * font_height /* Y = baseline of font */, 3 + (i + 1) * font_height /* Y = baseline of font */,
(xcb_char2b_t*)full_text); (xcb_char2b_t*)full_text);
free(full_text); free(full_text);
} }
/* Copy the contents of the pixmap to the real window */ /* Copy the contents of the pixmap to the real window */
xcb_copy_area(conn, pixmap, win, pixmap_gc, 0, 0, 0, 0, width, height); xcb_copy_area(conn, pixmap, win, pixmap_gc, 0, 0, 0, 0, width, height);
xcb_flush(conn); xcb_flush(conn);
return 1; return 1;
} }
/* /*
@ -83,25 +83,25 @@ static int sig_draw_window(xcb_window_t win, int width, int height, int font_hei
* *
*/ */
static int sig_handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) { static int sig_handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_press_event_t *event) {
uint16_t state = event->state; uint16_t state = event->state;
/* Apparantly, after activating numlock once, the numlock modifier /* Apparantly, after activating numlock once, the numlock modifier
* stays turned on (use xev(1) to verify). So, to resolve useful * stays turned on (use xev(1) to verify). So, to resolve useful
* keysyms, we remove the numlock flag from the event state */ * keysyms, we remove the numlock flag from the event state */
state &= ~xcb_numlock_mask; state &= ~xcb_numlock_mask;
xcb_keysym_t sym = xcb_key_press_lookup_keysym(keysyms, event, state); xcb_keysym_t sym = xcb_key_press_lookup_keysym(keysyms, event, state);
if (sym == 'e') { if (sym == 'e') {
DLOG("User issued exit-command, raising error again.\n"); DLOG("User issued exit-command, raising error again.\n");
raise(raised_signal); raise(raised_signal);
exit(1); exit(1);
} }
if (sym == 'r') if (sym == 'r')
i3_restart(); i3_restart();
return 1; return 1;
} }
/* /*
@ -109,37 +109,37 @@ static int sig_handle_key_press(void *ignored, xcb_connection_t *conn, xcb_key_p
* *
*/ */
static xcb_window_t open_input_window(xcb_connection_t *conn, Rect screen_rect, uint32_t width, uint32_t height) { static xcb_window_t open_input_window(xcb_connection_t *conn, Rect screen_rect, uint32_t width, uint32_t height) {
xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root; xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
xcb_window_t win = xcb_generate_id(conn); xcb_window_t win = xcb_generate_id(conn);
uint32_t mask = 0; uint32_t mask = 0;
uint32_t values[2]; uint32_t values[2];
mask |= XCB_CW_BACK_PIXEL; mask |= XCB_CW_BACK_PIXEL;
values[0] = 0; values[0] = 0;
mask |= XCB_CW_OVERRIDE_REDIRECT; mask |= XCB_CW_OVERRIDE_REDIRECT;
values[1] = 1; values[1] = 1;
/* center each popup on the specified screen */ /* center each popup on the specified screen */
uint32_t x = screen_rect.x + ((screen_rect.width / 2) - (width / 2)), uint32_t x = screen_rect.x + ((screen_rect.width / 2) - (width / 2)),
y = screen_rect.y + ((screen_rect.height / 2) - (height / 2)); y = screen_rect.y + ((screen_rect.height / 2) - (height / 2));
xcb_create_window(conn, xcb_create_window(conn,
XCB_COPY_FROM_PARENT, XCB_COPY_FROM_PARENT,
win, /* the window id */ win, /* the window id */
root, /* parent == root */ root, /* parent == root */
x, y, width, height, /* dimensions */ x, y, width, height, /* dimensions */
0, /* border = 0, we draw our own */ 0, /* border = 0, we draw our own */
XCB_WINDOW_CLASS_INPUT_OUTPUT, XCB_WINDOW_CLASS_INPUT_OUTPUT,
XCB_WINDOW_CLASS_COPY_FROM_PARENT, /* copy visual from parent */ XCB_WINDOW_CLASS_COPY_FROM_PARENT, /* copy visual from parent */
mask, mask,
values); values);
/* Map the window (= make it visible) */ /* Map the window (= make it visible) */
xcb_map_window(conn, win); xcb_map_window(conn, win);
return win; return win;
} }
/* /*
@ -149,60 +149,60 @@ static xcb_window_t open_input_window(xcb_connection_t *conn, Rect screen_rect,
* *
*/ */
void handle_signal(int sig, siginfo_t *info, void *data) { void handle_signal(int sig, siginfo_t *info, void *data) {
DLOG("i3 crashed. SIG: %d\n", sig); DLOG("i3 crashed. SIG: %d\n", sig);
struct sigaction action; struct sigaction action;
action.sa_handler = SIG_DFL; action.sa_handler = SIG_DFL;
sigaction(sig, &action, NULL); sigaction(sig, &action, NULL);
raised_signal = sig; raised_signal = sig;
/* setup event handler for key presses */ /* setup event handler for key presses */
xcb_event_handlers_t sig_evenths; xcb_event_handlers_t sig_evenths;
memset(&sig_evenths, 0, sizeof(xcb_event_handlers_t)); memset(&sig_evenths, 0, sizeof(xcb_event_handlers_t));
xcb_event_handlers_init(conn, &sig_evenths); xcb_event_handlers_init(conn, &sig_evenths);
xcb_event_set_key_press_handler(&sig_evenths, sig_handle_key_press, NULL); xcb_event_set_key_press_handler(&sig_evenths, sig_handle_key_press, NULL);
i3Font *font = load_font(conn, config.font); i3Font *font = load_font(conn, config.font);
/* width and height of the popup window, so that the text fits in */ /* width and height of the popup window, so that the text fits in */
int crash_text_num = sizeof(crash_text) / sizeof(char*); int crash_text_num = sizeof(crash_text) / sizeof(char*);
int height = 13 + (crash_text_num * font->height); int height = 13 + (crash_text_num * font->height);
/* calculate width for longest text */ /* calculate width for longest text */
int text_len = strlen(crash_text[crash_text_longest]); int text_len = strlen(crash_text[crash_text_longest]);
char *longest_text = convert_utf8_to_ucs2(crash_text[crash_text_longest], &text_len); char *longest_text = convert_utf8_to_ucs2(crash_text[crash_text_longest], &text_len);
int font_width = predict_text_width(conn, config.font, longest_text, text_len); int font_width = predict_text_width(conn, config.font, longest_text, text_len);
int width = font_width + 20; int width = font_width + 20;
/* Open a popup window on each virtual screen */ /* Open a popup window on each virtual screen */
Output *screen; Output *screen;
xcb_window_t win; xcb_window_t win;
TAILQ_FOREACH(screen, &outputs, outputs) { TAILQ_FOREACH(screen, &outputs, outputs) {
if (!screen->active) if (!screen->active)
continue; continue;
win = open_input_window(conn, screen->rect, width, height); win = open_input_window(conn, screen->rect, width, height);
/* Create pixmap */ /* Create pixmap */
pixmap = xcb_generate_id(conn); pixmap = xcb_generate_id(conn);
pixmap_gc = xcb_generate_id(conn); pixmap_gc = xcb_generate_id(conn);
xcb_create_pixmap(conn, root_depth, pixmap, win, width, height); xcb_create_pixmap(conn, root_depth, pixmap, win, width, height);
xcb_create_gc(conn, pixmap_gc, pixmap, 0, 0); xcb_create_gc(conn, pixmap_gc, pixmap, 0, 0);
/* Create graphics context */ /* Create graphics context */
xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FONT, font->id); xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FONT, font->id);
/* Grab the keyboard to get all input */ /* 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_keyboard(conn, false, win, XCB_CURRENT_TIME, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
/* Grab the cursor inside the popup */ /* Grab the cursor inside the popup */
xcb_grab_pointer(conn, false, win, XCB_NONE, 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); XCB_GRAB_MODE_ASYNC, win, XCB_NONE, XCB_CURRENT_TIME);
sig_draw_window(win, width, height, font->height); sig_draw_window(win, width, height, font->height);
xcb_flush(conn); xcb_flush(conn);
} }
xcb_event_wait_for_event_loop(&sig_evenths); xcb_event_wait_for_event_loop(&sig_evenths);
} }
/* /*
@ -210,13 +210,13 @@ void handle_signal(int sig, siginfo_t *info, void *data) {
* *
*/ */
void setup_signal_handler() { void setup_signal_handler() {
struct sigaction action; struct sigaction action;
action.sa_sigaction = handle_signal; action.sa_sigaction = handle_signal;
action.sa_flags = SA_NODEFER | SA_RESETHAND | SA_SIGINFO; action.sa_flags = SA_NODEFER | SA_RESETHAND | SA_SIGINFO;
sigemptyset(&action.sa_mask); sigemptyset(&action.sa_mask);
if (sigaction(SIGSEGV, &action, NULL) == -1 || if (sigaction(SIGSEGV, &action, NULL) == -1 ||
sigaction(SIGFPE, &action, NULL) == -1) sigaction(SIGFPE, &action, NULL) == -1)
ELOG("Could not setup signal handler"); ELOG("Could not setup signal handler");
} }