2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
6 * © 2009-2011 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
10 * i3-nagbar is a utility which displays a nag message.
15 #include <sys/types.h>
28 #include <xcb/xcb_aux.h>
29 #include <xcb/xcb_event.h>
32 #include "i3-nagbar.h"
41 static xcb_window_t win;
42 static xcb_pixmap_t pixmap;
43 static xcb_gcontext_t pixmap_gc;
44 static xcb_rectangle_t rect = { 0, 0, 600, 20 };
45 static int font_height;
46 static char *prompt = "Please do not run this program.";
47 static button_t *buttons;
50 /* Result of get_colorpixel() for the various colors. */
51 static uint32_t color_background; /* background of the bar */
52 static uint32_t color_button_background; /* background for buttons */
53 static uint32_t color_border; /* color of the button border */
54 static uint32_t color_border_bottom; /* color of the bottom border */
55 static uint32_t color_text; /* color of the text */
60 * Starts the given application by passing it through a shell. We use double fork
61 * to avoid zombie processes. As the started application’s parent exits (immediately),
62 * the application is reparented to init (process-id 1), which correctly handles
63 * childs, so we don’t have to do it :-).
65 * The shell is determined by looking for the SHELL environment variable. If it
66 * does not exist, /bin/sh is used.
69 static void start_application(const char *command) {
70 printf("executing: %s\n", command);
75 /* Stores the path of the shell */
76 static const char *shell = NULL;
79 if ((shell = getenv("SHELL")) == NULL)
82 /* This is the child */
83 execl(shell, shell, "-c", command, (void*)NULL);
91 static button_t *get_button_at(int16_t x, int16_t y) {
92 for (int c = 0; c < buttoncnt; c++)
93 if (x >= (buttons[c].x) && x <= (buttons[c].x + buttons[c].width))
99 static void handle_button_press(xcb_connection_t *conn, xcb_button_press_event_t *event) {
100 printf("button pressed on x = %d, y = %d\n",
101 event->event_x, event->event_y);
102 /* TODO: set a flag for the button, re-render */
106 * Called when the user releases the mouse button. Checks whether the
107 * coordinates are over a button and executes the appropriate action.
110 static void handle_button_release(xcb_connection_t *conn, xcb_button_release_event_t *event) {
111 printf("button released on x = %d, y = %d\n",
112 event->event_x, event->event_y);
113 /* If the user hits the close button, we exit(0) */
114 if (event->event_x >= (rect.width - 32))
116 button_t *button = get_button_at(event->event_x, event->event_y);
119 start_application(button->action);
121 /* TODO: unset flag, re-render */
125 * Handles expose events (redraws of the window) and rendering in general. Will
126 * be called from the code with event == NULL or from X with event != NULL.
129 static int handle_expose(xcb_connection_t *conn, xcb_expose_event_t *event) {
130 /* re-draw the background */
131 xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, color_background);
132 xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &rect);
134 /* restore font color */
136 values[0] = color_text;
137 values[1] = color_background;
138 xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND | XCB_GC_BACKGROUND, values);
139 xcb_image_text_8(conn, strlen(prompt), pixmap, pixmap_gc, 4 + 4/* X */,
140 font_height + 2 + 4 /* Y = baseline of font */, prompt);
142 /* render close button */
146 values[0] = color_button_background;
147 values[1] = line_width;
148 xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND | XCB_GC_LINE_WIDTH, values);
150 xcb_rectangle_t close = { y - w - (2 * line_width), 0, w + (2 * line_width), rect.height };
151 xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &close);
153 xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, color_border);
154 xcb_point_t points[] = {
155 { y - w - (2 * line_width), line_width / 2 },
156 { y - (line_width / 2), line_width / 2 },
157 { y - (line_width / 2), (rect.height - (line_width / 2)) - 2 },
158 { y - w - (2 * line_width), (rect.height - (line_width / 2)) - 2 },
159 { y - w - (2 * line_width), line_width / 2 }
161 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, pixmap, pixmap_gc, 5, points);
163 values[0] = color_text;
164 values[1] = color_button_background;
166 xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_LINE_WIDTH, values);
167 xcb_image_text_8(conn, strlen("x"), pixmap, pixmap_gc, y - w - line_width + (w / 2) - 4/* X */,
168 font_height + 2 + 4 - 1/* Y = baseline of font */, "X");
173 /* render custom buttons */
175 for (int c = 0; c < buttoncnt; c++) {
176 /* TODO: make w = text extents of the label */
179 xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, color_button_background);
180 close = (xcb_rectangle_t){ y - w - (2 * line_width), 2, w + (2 * line_width), rect.height - 6 };
181 xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &close);
183 xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, color_border);
184 buttons[c].x = y - w - (2 * line_width);
185 buttons[c].width = w;
186 xcb_point_t points2[] = {
187 { y - w - (2 * line_width), (line_width / 2) + 2 },
188 { y - (line_width / 2), (line_width / 2) + 2 },
189 { y - (line_width / 2), (rect.height - 4 - (line_width / 2)) },
190 { y - w - (2 * line_width), (rect.height - 4 - (line_width / 2)) },
191 { y - w - (2 * line_width), (line_width / 2) + 2 }
193 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, pixmap, pixmap_gc, 5, points2);
195 values[0] = color_text;
196 values[1] = color_button_background;
197 xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND | XCB_GC_BACKGROUND, values);
198 xcb_image_text_8(conn, strlen(buttons[c].label), pixmap, pixmap_gc, y - w - line_width + 6/* X */,
199 font_height + 2 + 3/* Y = baseline of font */, buttons[c].label);
204 /* border line at the bottom */
206 values[0] = color_border_bottom;
207 values[1] = line_width;
208 xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND | XCB_GC_LINE_WIDTH, values);
209 xcb_point_t bottom[] = {
210 { 0, rect.height - 0 },
211 { rect.width, rect.height - 0 }
213 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, pixmap, pixmap_gc, 2, bottom);
216 /* Copy the contents of the pixmap to the real window */
217 xcb_copy_area(conn, pixmap, win, pixmap_gc, 0, 0, 0, 0, rect.width, rect.height);
223 int main(int argc, char *argv[]) {
224 char *pattern = "-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1";
225 int o, option_index = 0;
226 enum { TYPE_ERROR = 0, TYPE_WARNING = 1 } bar_type = TYPE_ERROR;
228 static struct option long_options[] = {
229 {"version", no_argument, 0, 'v'},
230 {"font", required_argument, 0, 'f'},
231 {"button", required_argument, 0, 'b'},
232 {"help", no_argument, 0, 'h'},
233 {"message", no_argument, 0, 'm'},
234 {"type", required_argument, 0, 't'},
238 char *options_string = "b:f:m:t:vh";
240 while ((o = getopt_long(argc, argv, options_string, long_options, &option_index)) != -1) {
243 printf("i3-nagbar " I3_VERSION);
247 pattern = strdup(optarg);
250 prompt = strdup(optarg);
253 bar_type = (strcasecmp(optarg, "warning") == 0 ? TYPE_WARNING : TYPE_ERROR);
256 printf("i3-nagbar " I3_VERSION "\n");
257 printf("i3-nagbar [-m <message>] [-b <button> <action>] [-f <font>] [-v]\n");
260 buttons = realloc(buttons, sizeof(button_t) * (buttoncnt + 1));
261 buttons[buttoncnt].label = optarg;
262 buttons[buttoncnt].action = argv[optind];
263 printf("button with label *%s* and action *%s*\n",
264 buttons[buttoncnt].label,
265 buttons[buttoncnt].action);
267 printf("now %d buttons\n", buttoncnt);
275 xcb_connection_t *conn;
276 if ((conn = xcb_connect(NULL, &screens)) == NULL ||
277 xcb_connection_has_error(conn))
278 die("Cannot open display\n");
280 /* Place requests for the atoms we need as soon as possible */
281 #define xmacro(atom) \
282 xcb_intern_atom_cookie_t atom ## _cookie = xcb_intern_atom(conn, 0, strlen(#atom), #atom);
283 #include "atoms.xmacro"
286 xcb_screen_t *root_screen = xcb_aux_get_screen(conn, screens);
287 root = root_screen->root;
289 if (bar_type == TYPE_ERROR) {
290 /* Red theme for error messages */
291 color_button_background = get_colorpixel("#680a0a");
292 color_background = get_colorpixel("#900000");
293 color_text = get_colorpixel("#ffffff");
294 color_border = get_colorpixel("#d92424");
295 color_border_bottom = get_colorpixel("#470909");
297 /* Yellowish theme for warnings */
298 color_button_background = get_colorpixel("#ffc100");
299 color_background = get_colorpixel("#ffa8000");
300 color_text = get_colorpixel("#000000");
301 color_border = get_colorpixel("#ab7100");
302 color_border_bottom = get_colorpixel("#ab7100");
305 uint32_t font_id = get_font_id(conn, pattern, &font_height);
307 /* Open an input window */
308 win = open_input_window(conn, 500, font_height + 8 + 8 /* 8px padding */);
310 /* Setup NetWM atoms */
311 #define xmacro(name) \
313 xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(conn, name ## _cookie, NULL); \
315 die("Could not get atom " # name "\n"); \
317 A_ ## name = reply->atom; \
320 #include "atoms.xmacro"
324 xcb_change_property(conn,
325 XCB_PROP_MODE_REPLACE,
327 A__NET_WM_WINDOW_TYPE,
331 (unsigned char*) &A__NET_WM_WINDOW_TYPE_DOCK);
333 /* Reserve some space at the top of the screen */
339 uint32_t left_start_y;
341 uint32_t right_start_y;
342 uint32_t right_end_y;
343 uint32_t top_start_x;
345 uint32_t bottom_start_x;
346 uint32_t bottom_end_x;
347 } __attribute__((__packed__)) strut_partial = {0,};
349 strut_partial.top = font_height + 6;
350 strut_partial.top_start_x = 0;
351 strut_partial.top_end_x = 800;
353 xcb_change_property(conn,
354 XCB_PROP_MODE_REPLACE,
356 A__NET_WM_STRUT_PARTIAL,
363 pixmap = xcb_generate_id(conn);
364 pixmap_gc = xcb_generate_id(conn);
365 xcb_create_pixmap(conn, root_screen->root_depth, pixmap, win, 500, font_height + 8);
366 xcb_create_gc(conn, pixmap_gc, pixmap, 0, 0);
368 /* Create graphics context */
369 xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FONT, font_id);
371 /* Grab the keyboard to get all input */
374 xcb_generic_event_t *event;
375 while ((event = xcb_wait_for_event(conn)) != NULL) {
376 if (event->response_type == 0) {
377 fprintf(stderr, "X11 Error received! sequence %x\n", event->sequence);
381 /* Strip off the highest bit (set if the event is generated) */
382 int type = (event->response_type & 0x7F);
386 handle_expose(conn, (xcb_expose_event_t*)event);
389 case XCB_BUTTON_PRESS:
390 handle_button_press(conn, (xcb_button_press_event_t*)event);
393 case XCB_BUTTON_RELEASE:
394 handle_button_release(conn, (xcb_button_release_event_t*)event);
397 case XCB_CONFIGURE_NOTIFY: {
398 xcb_configure_notify_event_t *configure_notify = (xcb_configure_notify_event_t*)event;
399 rect = (xcb_rectangle_t){
402 configure_notify->width,
403 configure_notify->height
406 /* Recreate the pixmap / gc */
407 xcb_free_pixmap(conn, pixmap);
408 xcb_free_gc(conn, pixmap_gc);
410 xcb_create_pixmap(conn, root_screen->root_depth, pixmap, win, rect.width, rect.height);
411 xcb_create_gc(conn, pixmap_gc, pixmap, 0, 0);
413 /* Create graphics context */
414 xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FONT, font_id);