Add transparency support. Reworked EWMH stuff, fixes #20.
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LemonBoy
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216162c7eb
commit
d87fc1f0c8
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@ -1,10 +1,11 @@
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b(ar) a(in't) r(ecursive)
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=========================
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2012 (C) The Lemon Man
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2012-2013 (C) The Lemon Man
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A lightweight bar based on XCB (yay). Provides foreground/background color
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switching along with text alignment (screw you dzen!), full utf8 support
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and reduced memory footprint. Nothing less and nothing more.
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and reduced memory footprint. It also supports transparency when using a
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compositor such as compton. Nothing less and nothing more.
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Options
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-------
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@ -13,6 +14,7 @@ bar accepts a couple of command line switches.
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```
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-h Show the help and bail out.
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-p Make the bar permanent.
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-f Force docking (use this if your WM isn't EWMH compliant)
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-b Show the bar at the bottom of the screen.
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```
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127
bar.c
127
bar.c
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@ -44,6 +44,7 @@ static xcb_gcontext_t clear_gc;
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static xcb_gcontext_t underl_gc;
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static int bar_width;
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static int bar_bottom = BAR_BOTTOM;
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static int force_docking = 0;
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static fontset_item_t fontset[FONT_MAX];
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static fontset_item_t *sel_font = NULL;
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@ -240,72 +241,67 @@ font_load (const char **font_list)
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return 0;
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}
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int
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set_ewmh_atoms (xcb_window_t root)
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enum {
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NET_WM_WINDOW_TYPE,
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NET_WM_WINDOW_TYPE_DOCK,
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NET_WM_DESKTOP,
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NET_WM_STRUT_PARTIAL,
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NET_WM_STRUT,
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NET_WM_STATE,
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NET_WM_WINDOW_OPACITY,
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NET_WM_STATE_STICKY,
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NET_WM_STATE_ABOVE,
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};
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void
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set_ewmh_atoms ()
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{
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xcb_intern_atom_cookie_t cookies[5];
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xcb_intern_atom_reply_t *reply;
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xcb_get_property_reply_t *reply1;
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xcb_atom_t atoms[5];
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int compliance_lvl;
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uint32_t v[12] = {0};
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const char *atom_names[] = {
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"_NET_WM_WINDOW_TYPE",
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"_NET_WM_WINDOW_TYPE_DOCK",
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"_NET_WM_DESKTOP",
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"_NET_WM_STRUT_PARTIAL",
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"_NET_WM_STRUT",
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"_NET_WM_STATE",
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"_NET_WM_WINDOW_OPACITY",
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/* Leave those at the end since are batch-set */
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"_NET_WM_STATE_STICKY",
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"_NET_WM_STATE_ABOVE",
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};
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const int atoms = sizeof(atom_names)/sizeof(char *);
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xcb_intern_atom_cookie_t atom_cookie[atoms];
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xcb_atom_t atom_list[atoms];
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xcb_intern_atom_reply_t *atom_reply;
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int strut[12] = {0};
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cookies[0] = xcb_intern_atom (c, 0, strlen ("_NET_WM_WINDOW_TYPE") , "_NET_WM_WINDOW_TYPE");
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cookies[1] = xcb_intern_atom (c, 0, strlen ("_NET_WM_WINDOW_TYPE_DOCK"), "_NET_WM_WINDOW_TYPE_DOCK");
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cookies[2] = xcb_intern_atom (c, 0, strlen ("_NET_WM_DESKTOP") , "_NET_WM_DESKTOP");
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cookies[3] = xcb_intern_atom (c, 0, strlen ("_NET_WM_STRUT_PARTIAL") , "_NET_WM_STRUT_PARTIAL");
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cookies[4] = xcb_intern_atom (c, 0, strlen ("_NET_SUPPORTED") , "_NET_SUPPORTED");
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/* As suggested fetch all the cookies first (yum!) and then retrieve the
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* atoms to exploit the async'ness */
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for (int i = 0; i < atoms; i++)
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atom_cookie[i] = xcb_intern_atom(c, 0, strlen(atom_names[i]), atom_names[i]);
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reply = xcb_intern_atom_reply (c, cookies[0], NULL);
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atoms[0] = reply->atom; free (reply);
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reply = xcb_intern_atom_reply (c, cookies[1], NULL);
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atoms[1] = reply->atom; free (reply);
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reply = xcb_intern_atom_reply (c, cookies[2], NULL);
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atoms[2] = reply->atom; free (reply);
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reply = xcb_intern_atom_reply (c, cookies[3], NULL);
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atoms[3] = reply->atom; free (reply);
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reply = xcb_intern_atom_reply (c, cookies[4], NULL);
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atoms[4] = reply->atom; free (reply);
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compliance_lvl = 0;
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reply1 = xcb_get_property_reply (c, xcb_get_property (c, 0, root, atoms[4], XCB_ATOM_ATOM, 0, -1), NULL);
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if (!reply)
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return compliance_lvl;
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for (xcb_atom_t *a = xcb_get_property_value (reply1);
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a && a != xcb_get_property_value_end (reply1).data;
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a++)
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{
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/* Set the _NET_WM_WINDOW_TYPE_DOCK state */
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if (*a == atoms[0]) {
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xcb_change_property (c, XCB_PROP_MODE_REPLACE, win, atoms[0], XCB_ATOM_ATOM, 32, 1, &atoms[1]);
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compliance_lvl++;
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for (int i = 0; i < atoms; i++) {
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atom_reply = xcb_intern_atom_reply(c, atom_cookie[i], NULL);
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if (!atom_reply)
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return;
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atom_list[i] = atom_reply->atom;
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free(atom_reply);
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}
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/* Show on every desktop */
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if (*a == atoms[2]) {
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xcb_change_property (c, XCB_PROP_MODE_REPLACE, win, atoms[2], XCB_ATOM_CARDINAL, 32, 1,
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(const uint32_t []){ 0xffffffff } );
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compliance_lvl++;
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}
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/* Tell the WM that this space is for the bar */
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if (*a == atoms[3]) {
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/* Prepare the strut array */
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if (bar_bottom) {
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v[3] = BAR_HEIGHT;
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v[11] = bar_width;
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strut[3] = BAR_HEIGHT;
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strut[11] = bar_width;
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} else {
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strut[2] = BAR_HEIGHT;
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strut[9] = bar_width;
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}
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else {
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v[2] = BAR_HEIGHT;
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v[8] = bar_width;
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}
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xcb_change_property (c, XCB_PROP_MODE_REPLACE, win, atoms[3], XCB_ATOM_CARDINAL, 32, 12, v);
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compliance_lvl++;
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}
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}
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free (reply1);
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/* If the wm supports at least 2 NET atoms then mark as compliant */
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return (compliance_lvl > 1);
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xcb_change_property (c, XCB_PROP_MODE_REPLACE, win, atom_list[NET_WM_WINDOW_OPACITY], XCB_ATOM_CARDINAL, 32, 1, (const uint32_t []){ (uint32_t)(BAR_OPACITY * 0xffffffff) } );
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xcb_change_property (c, XCB_PROP_MODE_REPLACE, win, atom_list[NET_WM_WINDOW_TYPE], XCB_ATOM_ATOM, 32, 1, &atom_list[NET_WM_WINDOW_TYPE_DOCK]);
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xcb_change_property (c, XCB_PROP_MODE_APPEND, win, atom_list[NET_WM_STATE], XCB_ATOM_ATOM, 32, 2, &atom_list[NET_WM_STATE_STICKY]);
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xcb_change_property (c, XCB_PROP_MODE_REPLACE, win, atom_list[NET_WM_DESKTOP], XCB_ATOM_CARDINAL, 32, 1, (const uint32_t []){ -1 } );
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xcb_change_property (c, XCB_PROP_MODE_REPLACE, win, atom_list[NET_WM_STRUT_PARTIAL], XCB_ATOM_CARDINAL, 32, 12, strut);
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xcb_change_property (c, XCB_PROP_MODE_REPLACE, win, atom_list[NET_WM_STRUT], XCB_ATOM_CARDINAL, 32, 4, strut);
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}
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void
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@ -340,11 +336,10 @@ init (void)
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BAR_HEIGHT, 0, XCB_WINDOW_CLASS_INPUT_OUTPUT, scr->root_visual,
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XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK, (const uint32_t []){ palette[10], XCB_EVENT_MASK_EXPOSURE });
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/* Set EWMH hints */
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int ewmh_docking = set_ewmh_atoms (root);
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/* For WM that support EWMH atoms */
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set_ewmh_atoms();
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/* Quirk for wm not supporting the EWMH docking method */
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xcb_change_window_attributes (c, win, XCB_CW_OVERRIDE_REDIRECT, (const uint32_t []){ !ewmh_docking });
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xcb_change_window_attributes (c, win, XCB_CW_OVERRIDE_REDIRECT, (const uint32_t []){ force_docking });
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/* Create a temporary canvas */
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canvas = xcb_generate_id (c);
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@ -362,8 +357,6 @@ init (void)
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/* Make the bar visible */
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xcb_map_window (c, win);
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/* Send a configure event. Needed to make bar work with Openbox */
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xcb_configure_window (c, win, XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y, (const uint32_t []){ BAR_OFFSET, y });
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xcb_flush (c);
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}
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@ -412,16 +405,18 @@ main (int argc, char **argv)
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int permanent = 0;
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char ch;
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while ((ch = getopt (argc, argv, "phb")) != -1) {
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while ((ch = getopt (argc, argv, "phbf")) != -1) {
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switch (ch) {
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case 'h':
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printf ("usage: %s [-p | -h] [-b]\n"
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"\t-h Show this help\n"
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"\t-b Put bar at the bottom of the screen\n"
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"\t-f Force docking (use this if your WM isn't EWMH compliant)\n"
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"\t-p Don't close after the data ends\n", argv[0]);
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exit (0);
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case 'p': permanent = 1; break;
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case 'b': bar_bottom = 1; break;
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case 'f': force_docking = 1; break;
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}
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}
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@ -14,6 +14,8 @@
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#define BAR_FONT "-*-terminus-medium-r-normal-*-12-*-*-*-c-*-*-1","fixed"
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/* Some fonts don't set the right width for some chars, pheex it */
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#define BAR_FONT_FALLBACK_WIDTH 6
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/* Define the opacity of the bar (requires a compositor such as compton) */
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#define BAR_OPACITY 1.0 /* 0 is invisible, 1 is opaque */
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/* Color palette */
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#define BACKGROUND 0x232c31
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#define COLOR0 0x2d3c46
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