288 lines
9.5 KiB
C
288 lines
9.5 KiB
C
/*
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* vim:ts=4:sw=4:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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* © 2009 Michael Stapelberg and contributors (see also: LICENSE)
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*
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* xcb.c: Helper functions for easier usage of XCB
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*
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*/
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#include "all.h"
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unsigned int xcb_numlock_mask;
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/*
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* Convenience wrapper around xcb_create_window which takes care of depth, generating an ID and checking
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* for errors.
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*
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*/
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xcb_window_t create_window(xcb_connection_t *conn, Rect dims,
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uint16_t depth, xcb_visualid_t visual, uint16_t window_class,
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enum xcursor_cursor_t cursor, bool map, uint32_t mask, uint32_t *values) {
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xcb_window_t result = xcb_generate_id(conn);
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/* If the window class is XCB_WINDOW_CLASS_INPUT_ONLY, we copy depth and
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* visual id from the parent window. */
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if (window_class == XCB_WINDOW_CLASS_INPUT_ONLY) {
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depth = XCB_COPY_FROM_PARENT;
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visual = XCB_COPY_FROM_PARENT;
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}
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xcb_void_cookie_t gc_cookie = xcb_create_window(conn,
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depth,
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result, /* the window id */
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root, /* parent == root */
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dims.x, dims.y, dims.width, dims.height, /* dimensions */
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0, /* border = 0, we draw our own */
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window_class,
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visual,
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mask,
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values);
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xcb_generic_error_t *error = xcb_request_check(conn, gc_cookie);
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if (error != NULL) {
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ELOG("Could not create window. Error code: %d.\n", error->error_code);
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}
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/* Set the cursor */
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uint32_t cursor_values[] = {xcursor_get_cursor(cursor)};
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xcb_change_window_attributes(conn, result, XCB_CW_CURSOR, cursor_values);
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/* Map the window (= make it visible) */
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if (map)
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xcb_map_window(conn, result);
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return result;
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}
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/*
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* Generates a configure_notify_event with absolute coordinates (relative to the X root
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* window, not to the client’s frame) for the given client.
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*
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*/
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void fake_absolute_configure_notify(Con *con) {
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xcb_rectangle_t absolute;
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if (con->window == NULL)
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return;
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absolute.x = con->rect.x + con->window_rect.x;
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absolute.y = con->rect.y + con->window_rect.y;
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absolute.width = con->window_rect.width;
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absolute.height = con->window_rect.height;
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DLOG("fake rect = (%d, %d, %d, %d)\n", absolute.x, absolute.y, absolute.width, absolute.height);
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fake_configure_notify(conn, absolute, con->window->id, con->border_width);
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}
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/*
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* Sends the WM_TAKE_FOCUS ClientMessage to the given window
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*
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*/
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void send_take_focus(xcb_window_t window, xcb_timestamp_t timestamp) {
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/* Every X11 event is 32 bytes long. Therefore, XCB will copy 32 bytes.
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* In order to properly initialize these bytes, we allocate 32 bytes even
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* though we only need less for an xcb_configure_notify_event_t */
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void *event = scalloc(32, 1);
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xcb_client_message_event_t *ev = event;
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ev->response_type = XCB_CLIENT_MESSAGE;
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ev->window = window;
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ev->type = A_WM_PROTOCOLS;
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ev->format = 32;
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ev->data.data32[0] = A_WM_TAKE_FOCUS;
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ev->data.data32[1] = timestamp;
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DLOG("Sending WM_TAKE_FOCUS to the client\n");
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xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char *)ev);
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free(event);
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}
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/*
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* Configures the given window to have the size/position specified by given rect
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*
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*/
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void xcb_set_window_rect(xcb_connection_t *conn, xcb_window_t window, Rect r) {
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xcb_void_cookie_t cookie;
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cookie = xcb_configure_window(conn, window,
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XCB_CONFIG_WINDOW_X |
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XCB_CONFIG_WINDOW_Y |
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XCB_CONFIG_WINDOW_WIDTH |
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XCB_CONFIG_WINDOW_HEIGHT,
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&(r.x));
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/* ignore events which are generated because we configured a window */
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add_ignore_event(cookie.sequence, -1);
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}
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/*
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* Returns the first supported _NET_WM_WINDOW_TYPE atom.
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*
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*/
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xcb_atom_t xcb_get_preferred_window_type(xcb_get_property_reply_t *reply) {
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if (reply == NULL || xcb_get_property_value_length(reply) == 0)
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return XCB_NONE;
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xcb_atom_t *atoms;
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if ((atoms = xcb_get_property_value(reply)) == NULL)
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return XCB_NONE;
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for (int i = 0; i < xcb_get_property_value_length(reply) / (reply->format / 8); i++) {
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if (atoms[i] == A__NET_WM_WINDOW_TYPE_NORMAL ||
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atoms[i] == A__NET_WM_WINDOW_TYPE_DIALOG ||
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atoms[i] == A__NET_WM_WINDOW_TYPE_UTILITY ||
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atoms[i] == A__NET_WM_WINDOW_TYPE_TOOLBAR ||
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atoms[i] == A__NET_WM_WINDOW_TYPE_SPLASH ||
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atoms[i] == A__NET_WM_WINDOW_TYPE_MENU ||
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atoms[i] == A__NET_WM_WINDOW_TYPE_DROPDOWN_MENU ||
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atoms[i] == A__NET_WM_WINDOW_TYPE_POPUP_MENU ||
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atoms[i] == A__NET_WM_WINDOW_TYPE_TOOLTIP ||
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atoms[i] == A__NET_WM_WINDOW_TYPE_NOTIFICATION) {
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return atoms[i];
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}
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}
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return XCB_NONE;
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}
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/*
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* Returns true if the given reply contains the given atom.
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*
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*/
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bool xcb_reply_contains_atom(xcb_get_property_reply_t *prop, xcb_atom_t atom) {
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if (prop == NULL || xcb_get_property_value_length(prop) == 0)
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return false;
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xcb_atom_t *atoms;
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if ((atoms = xcb_get_property_value(prop)) == NULL)
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return false;
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for (int i = 0; i < xcb_get_property_value_length(prop) / (prop->format / 8); i++)
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if (atoms[i] == atom)
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return true;
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return false;
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}
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/*
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* Get depth of visual specified by visualid
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*
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*/
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uint16_t get_visual_depth(xcb_visualid_t visual_id) {
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xcb_depth_iterator_t depth_iter;
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depth_iter = xcb_screen_allowed_depths_iterator(root_screen);
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for (; depth_iter.rem; xcb_depth_next(&depth_iter)) {
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xcb_visualtype_iterator_t visual_iter;
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visual_iter = xcb_depth_visuals_iterator(depth_iter.data);
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for (; visual_iter.rem; xcb_visualtype_next(&visual_iter)) {
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if (visual_id == visual_iter.data->visual_id) {
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return depth_iter.data->depth;
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}
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}
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}
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return 0;
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}
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/*
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* Get visual type specified by visualid
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*
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*/
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xcb_visualtype_t *get_visualtype_by_id(xcb_visualid_t visual_id) {
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xcb_depth_iterator_t depth_iter;
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depth_iter = xcb_screen_allowed_depths_iterator(root_screen);
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for (; depth_iter.rem; xcb_depth_next(&depth_iter)) {
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xcb_visualtype_iterator_t visual_iter;
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visual_iter = xcb_depth_visuals_iterator(depth_iter.data);
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for (; visual_iter.rem; xcb_visualtype_next(&visual_iter)) {
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if (visual_id == visual_iter.data->visual_id) {
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return visual_iter.data;
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}
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}
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}
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return 0;
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}
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/*
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* Get visualid with specified depth
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*
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*/
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xcb_visualid_t get_visualid_by_depth(uint16_t depth) {
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xcb_depth_iterator_t depth_iter;
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depth_iter = xcb_screen_allowed_depths_iterator(root_screen);
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for (; depth_iter.rem; xcb_depth_next(&depth_iter)) {
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if (depth_iter.data->depth != depth)
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continue;
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xcb_visualtype_iterator_t visual_iter;
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visual_iter = xcb_depth_visuals_iterator(depth_iter.data);
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if (!visual_iter.rem)
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continue;
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return visual_iter.data->visual_id;
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}
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return 0;
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}
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/*
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* Add an atom to a list of atoms the given property defines.
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* This is useful, for example, for manipulating _NET_WM_STATE.
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*
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*/
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void xcb_add_property_atom(xcb_connection_t *conn, xcb_window_t window, xcb_atom_t property, xcb_atom_t atom) {
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xcb_change_property(conn, XCB_PROP_MODE_APPEND, window, property, XCB_ATOM_ATOM, 32, 1, (uint32_t[]){atom});
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}
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/*
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* Remove an atom from a list of atoms the given property defines without
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* removing any other potentially set atoms. This is useful, for example, for
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* manipulating _NET_WM_STATE.
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*
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*/
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void xcb_remove_property_atom(xcb_connection_t *conn, xcb_window_t window, xcb_atom_t property, xcb_atom_t atom) {
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xcb_grab_server(conn);
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xcb_get_property_reply_t *reply =
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xcb_get_property_reply(conn,
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xcb_get_property(conn, false, window, property, XCB_GET_PROPERTY_TYPE_ANY, 0, 4096), NULL);
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if (reply == NULL || xcb_get_property_value_length(reply) == 0)
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goto release_grab;
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xcb_atom_t *atoms = xcb_get_property_value(reply);
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if (atoms == NULL) {
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goto release_grab;
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}
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{
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int num = 0;
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const int current_size = xcb_get_property_value_length(reply) / (reply->format / 8);
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xcb_atom_t values[current_size];
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for (int i = 0; i < current_size; i++) {
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if (atoms[i] != atom)
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values[num++] = atoms[i];
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}
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xcb_change_property(conn, XCB_PROP_MODE_REPLACE, window, property, XCB_ATOM_ATOM, 32, num, values);
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}
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release_grab:
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FREE(reply);
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xcb_ungrab_server(conn);
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}
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/*
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* Grab the specified buttons on a window when managing it.
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*
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*/
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void xcb_grab_buttons(xcb_connection_t *conn, xcb_window_t window, int *buttons) {
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int i = 0;
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while (buttons[i] > 0) {
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xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS, XCB_GRAB_MODE_SYNC,
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XCB_GRAB_MODE_ASYNC, root, XCB_NONE, buttons[i], XCB_BUTTON_MASK_ANY);
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i++;
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}
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}
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