2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
5 * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
7 * xcb.c: Helper functions for easier usage of XCB
12 unsigned int xcb_numlock_mask;
15 * Convenience wrapper around xcb_create_window which takes care of depth, generating an ID and checking
19 xcb_window_t create_window(xcb_connection_t *conn, Rect dims,
20 uint16_t depth, xcb_visualid_t visual, uint16_t window_class,
21 enum xcursor_cursor_t cursor, bool map, uint32_t mask, uint32_t *values) {
22 xcb_window_t result = xcb_generate_id(conn);
24 /* If the window class is XCB_WINDOW_CLASS_INPUT_ONLY, we copy depth and
25 * visual id from the parent window. */
26 if (window_class == XCB_WINDOW_CLASS_INPUT_ONLY) {
27 depth = XCB_COPY_FROM_PARENT;
28 visual = XCB_COPY_FROM_PARENT;
31 xcb_create_window(conn,
33 result, /* the window id */
34 root, /* parent == root */
35 dims.x, dims.y, dims.width, dims.height, /* dimensions */
36 0, /* border = 0, we draw our own */
43 if (xcursor_supported) {
45 values[0] = xcursor_get_cursor(cursor);
46 xcb_change_window_attributes(conn, result, mask, values);
48 xcb_cursor_t cursor_id = xcb_generate_id(conn);
49 i3Font cursor_font = load_font("cursor", false);
50 int xcb_cursor = xcursor_get_xcb_cursor(cursor);
51 xcb_create_glyph_cursor(conn, cursor_id, cursor_font.specific.xcb.id,
52 cursor_font.specific.xcb.id, xcb_cursor, xcb_cursor + 1, 0, 0, 0,
54 xcb_change_window_attributes(conn, result, XCB_CW_CURSOR, &cursor_id);
55 xcb_free_cursor(conn, cursor_id);
58 /* Map the window (= make it visible) */
60 xcb_map_window(conn, result);
66 * Draws a line from x,y to to_x,to_y using the given color
69 void xcb_draw_line(xcb_connection_t *conn, xcb_drawable_t drawable, xcb_gcontext_t gc,
70 uint32_t colorpixel, uint32_t x, uint32_t y, uint32_t to_x, uint32_t to_y) {
71 xcb_change_gc(conn, gc, XCB_GC_FOREGROUND, (uint32_t[]){colorpixel});
72 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, drawable, gc, 2,
73 (xcb_point_t[]){{x, y}, {to_x, to_y}});
77 * Draws a rectangle from x,y with width,height using the given color
80 void xcb_draw_rect(xcb_connection_t *conn, xcb_drawable_t drawable, xcb_gcontext_t gc,
81 uint32_t colorpixel, uint32_t x, uint32_t y, uint32_t width, uint32_t height) {
82 xcb_change_gc(conn, gc, XCB_GC_FOREGROUND, (uint32_t[]){colorpixel});
83 xcb_rectangle_t rect = {x, y, width, height};
84 xcb_poly_fill_rectangle(conn, drawable, gc, 1, &rect);
88 * Generates a configure_notify_event with absolute coordinates (relative to the X root
89 * window, not to the client’s frame) for the given client.
92 void fake_absolute_configure_notify(Con *con) {
93 xcb_rectangle_t absolute;
94 if (con->window == NULL)
97 absolute.x = con->rect.x + con->window_rect.x;
98 absolute.y = con->rect.y + con->window_rect.y;
99 absolute.width = con->window_rect.width;
100 absolute.height = con->window_rect.height;
102 DLOG("fake rect = (%d, %d, %d, %d)\n", absolute.x, absolute.y, absolute.width, absolute.height);
104 fake_configure_notify(conn, absolute, con->window->id, con->border_width);
108 * Sends the WM_TAKE_FOCUS ClientMessage to the given window
111 void send_take_focus(xcb_window_t window, xcb_timestamp_t timestamp) {
112 /* Every X11 event is 32 bytes long. Therefore, XCB will copy 32 bytes.
113 * In order to properly initialize these bytes, we allocate 32 bytes even
114 * though we only need less for an xcb_configure_notify_event_t */
115 void *event = scalloc(32, 1);
116 xcb_client_message_event_t *ev = event;
118 ev->response_type = XCB_CLIENT_MESSAGE;
120 ev->type = A_WM_PROTOCOLS;
122 ev->data.data32[0] = A_WM_TAKE_FOCUS;
123 ev->data.data32[1] = timestamp;
125 DLOG("Sending WM_TAKE_FOCUS to the client\n");
126 xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char *)ev);
131 * Raises the given window (typically client->frame) above all other windows
134 void xcb_raise_window(xcb_connection_t *conn, xcb_window_t window) {
135 uint32_t values[] = {XCB_STACK_MODE_ABOVE};
136 xcb_configure_window(conn, window, XCB_CONFIG_WINDOW_STACK_MODE, values);
140 * Configures the given window to have the size/position specified by given rect
143 void xcb_set_window_rect(xcb_connection_t *conn, xcb_window_t window, Rect r) {
144 xcb_void_cookie_t cookie;
145 cookie = xcb_configure_window(conn, window,
146 XCB_CONFIG_WINDOW_X |
147 XCB_CONFIG_WINDOW_Y |
148 XCB_CONFIG_WINDOW_WIDTH |
149 XCB_CONFIG_WINDOW_HEIGHT,
151 /* ignore events which are generated because we configured a window */
152 add_ignore_event(cookie.sequence, -1);
156 * Returns the first supported _NET_WM_WINDOW_TYPE atom.
159 xcb_atom_t xcb_get_preferred_window_type(xcb_get_property_reply_t *reply) {
160 if (reply == NULL || xcb_get_property_value_length(reply) == 0)
164 if ((atoms = xcb_get_property_value(reply)) == NULL)
167 for (int i = 0; i < xcb_get_property_value_length(reply) / (reply->format / 8); i++) {
168 if (atoms[i] == A__NET_WM_WINDOW_TYPE_NORMAL ||
169 atoms[i] == A__NET_WM_WINDOW_TYPE_DIALOG ||
170 atoms[i] == A__NET_WM_WINDOW_TYPE_UTILITY ||
171 atoms[i] == A__NET_WM_WINDOW_TYPE_TOOLBAR ||
172 atoms[i] == A__NET_WM_WINDOW_TYPE_SPLASH ||
173 atoms[i] == A__NET_WM_WINDOW_TYPE_MENU ||
174 atoms[i] == A__NET_WM_WINDOW_TYPE_DROPDOWN_MENU ||
175 atoms[i] == A__NET_WM_WINDOW_TYPE_POPUP_MENU ||
176 atoms[i] == A__NET_WM_WINDOW_TYPE_TOOLTIP ||
177 atoms[i] == A__NET_WM_WINDOW_TYPE_NOTIFICATION) {
186 * Returns true if the given reply contains the given atom.
189 bool xcb_reply_contains_atom(xcb_get_property_reply_t *prop, xcb_atom_t atom) {
190 if (prop == NULL || xcb_get_property_value_length(prop) == 0)
194 if ((atoms = xcb_get_property_value(prop)) == NULL)
197 for (int i = 0; i < xcb_get_property_value_length(prop) / (prop->format / 8); i++)
198 if (atoms[i] == atom)
205 * Moves the mouse pointer into the middle of rect.
208 void xcb_warp_pointer_rect(xcb_connection_t *conn, Rect *rect) {
209 int mid_x = rect->x + (rect->width / 2);
210 int mid_y = rect->y + (rect->height / 2);
212 LOG("warp pointer to: %d %d\n", mid_x, mid_y);
213 xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y);
217 * Set the cursor of the root window to the given cursor id.
218 * This function should only be used if xcursor_supported == false.
219 * Otherwise, use xcursor_set_root_cursor().
222 void xcb_set_root_cursor(int cursor) {
223 xcb_cursor_t cursor_id = xcb_generate_id(conn);
224 i3Font cursor_font = load_font("cursor", false);
225 int xcb_cursor = xcursor_get_xcb_cursor(cursor);
226 xcb_create_glyph_cursor(conn, cursor_id, cursor_font.specific.xcb.id,
227 cursor_font.specific.xcb.id, xcb_cursor, xcb_cursor + 1, 0, 0, 0,
228 65535, 65535, 65535);
229 xcb_change_window_attributes(conn, root, XCB_CW_CURSOR, &cursor_id);
230 xcb_free_cursor(conn, cursor_id);
235 * Get depth of visual specified by visualid
238 uint16_t get_visual_depth(xcb_visualid_t visual_id) {
239 xcb_depth_iterator_t depth_iter;
241 depth_iter = xcb_screen_allowed_depths_iterator(root_screen);
242 for (; depth_iter.rem; xcb_depth_next(&depth_iter)) {
243 xcb_visualtype_iterator_t visual_iter;
245 visual_iter = xcb_depth_visuals_iterator(depth_iter.data);
246 for (; visual_iter.rem; xcb_visualtype_next(&visual_iter)) {
247 if (visual_id == visual_iter.data->visual_id) {
248 return depth_iter.data->depth;
256 * Get visual type specified by visualid
259 xcb_visualtype_t *get_visualtype_by_id(xcb_visualid_t visual_id) {
260 xcb_depth_iterator_t depth_iter;
262 depth_iter = xcb_screen_allowed_depths_iterator(root_screen);
263 for (; depth_iter.rem; xcb_depth_next(&depth_iter)) {
264 xcb_visualtype_iterator_t visual_iter;
266 visual_iter = xcb_depth_visuals_iterator(depth_iter.data);
267 for (; visual_iter.rem; xcb_visualtype_next(&visual_iter)) {
268 if (visual_id == visual_iter.data->visual_id) {
269 return visual_iter.data;
277 * Get visualid with specified depth
280 xcb_visualid_t get_visualid_by_depth(uint16_t depth) {
281 xcb_depth_iterator_t depth_iter;
283 depth_iter = xcb_screen_allowed_depths_iterator(root_screen);
284 for (; depth_iter.rem; xcb_depth_next(&depth_iter)) {
285 if (depth_iter.data->depth != depth)
288 xcb_visualtype_iterator_t visual_iter;
290 visual_iter = xcb_depth_visuals_iterator(depth_iter.data);
291 if (!visual_iter.rem)
293 return visual_iter.data->visual_id;
299 * Add an atom to a list of atoms the given property defines.
300 * This is useful, for example, for manipulating _NET_WM_STATE.
303 void xcb_add_property_atom(xcb_connection_t *conn, xcb_window_t window, xcb_atom_t property, xcb_atom_t atom) {
304 xcb_change_property(conn, XCB_PROP_MODE_APPEND, window, property, XCB_ATOM_ATOM, 32, 1, (uint32_t[]){atom});
308 * Remove an atom from a list of atoms the given property defines without
309 * removing any other potentially set atoms. This is useful, for example, for
310 * manipulating _NET_WM_STATE.
313 void xcb_remove_property_atom(xcb_connection_t *conn, xcb_window_t window, xcb_atom_t property, xcb_atom_t atom) {
314 xcb_grab_server(conn);
316 xcb_get_property_reply_t *reply =
317 xcb_get_property_reply(conn,
318 xcb_get_property(conn, false, window, property, XCB_GET_PROPERTY_TYPE_ANY, 0, 4096), NULL);
319 if (reply == NULL || xcb_get_property_value_length(reply) == 0)
321 xcb_atom_t *atoms = xcb_get_property_value(reply);
328 const int current_size = xcb_get_property_value_length(reply) / (reply->format / 8);
329 xcb_atom_t values[current_size];
330 for (int i = 0; i < current_size; i++) {
331 if (atoms[i] != atom)
332 values[num++] = atoms[i];
335 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, window, property, XCB_ATOM_ATOM, 32, num, values);
340 xcb_ungrab_server(conn);
344 * Grab the specified buttons on a window when managing it.
347 void xcb_grab_buttons(xcb_connection_t *conn, xcb_window_t window, int *buttons) {
349 while (buttons[i] > 0) {
350 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS, XCB_GRAB_MODE_SYNC,
351 XCB_GRAB_MODE_ASYNC, root, XCB_NONE, buttons[i], XCB_BUTTON_MASK_ANY);