i3
xcursor.c
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1 #undef I3__FILE__
2 #define I3__FILE__ "xcursor.c"
3 /*
4  * vim:ts=4:sw=4:expandtab
5  *
6  * i3 - an improved dynamic tiling window manager
7  * © 2009-2013 Michael Stapelberg and contributors (see also: LICENSE)
8  *
9  * xcursor.c: xcursor support for themed cursors.
10  *
11  */
12 #include <assert.h>
13 #include <xcb/xcb_cursor.h>
14 
15 #include "i3.h"
16 #include "xcb.h"
17 #include "xcursor.h"
18 
19 static xcb_cursor_context_t *ctx;
20 static xcb_cursor_t cursors[XCURSOR_CURSOR_MAX];
21 
22 static const int xcb_cursors[XCURSOR_CURSOR_MAX] = {
27 };
28 
30  if (xcb_cursor_context_new(conn, root_screen, &ctx) < 0) {
31  ELOG("xcursor support unavailable\n");
32  xcursor_supported = false;
33  return;
34  }
35 #define LOAD_CURSOR(constant, name) \
36  do { \
37  cursors[constant] = xcb_cursor_load_cursor(ctx, name); \
38  } while (0)
40  LOAD_CURSOR(XCURSOR_CURSOR_RESIZE_HORIZONTAL, "sb_h_double_arrow");
41  LOAD_CURSOR(XCURSOR_CURSOR_RESIZE_VERTICAL, "sb_v_double_arrow");
44  LOAD_CURSOR(XCURSOR_CURSOR_TOP_LEFT_CORNER, "top_left_corner");
45  LOAD_CURSOR(XCURSOR_CURSOR_TOP_RIGHT_CORNER, "top_right_corner");
46  LOAD_CURSOR(XCURSOR_CURSOR_BOTTOM_LEFT_CORNER, "bottom_left_corner");
47  LOAD_CURSOR(XCURSOR_CURSOR_BOTTOM_RIGHT_CORNER, "bottom_right_corner");
48 #undef LOAD_CURSOR
49 }
50 
51 /*
52  * Sets the cursor of the root window to the 'pointer' cursor.
53  *
54  * This function is called when i3 is initialized, because with some login
55  * managers, the root window will not have a cursor otherwise.
56  *
57  */
58 void xcursor_set_root_cursor(int cursor_id) {
59  xcb_change_window_attributes(conn, root, XCB_CW_CURSOR,
60  (uint32_t[]){ xcursor_get_cursor(cursor_id) });
61 }
62 
63 xcb_cursor_t xcursor_get_cursor(enum xcursor_cursor_t c) {
64  assert(c >= 0 && c < XCURSOR_CURSOR_MAX);
65  return cursors[c];
66 }
67 
69  assert(c >= 0 && c < XCURSOR_CURSOR_MAX);
70  return xcb_cursors[c];
71 }