417 lines
14 KiB
C
417 lines
14 KiB
C
/*
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* vim:ts=8:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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*
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* (c) 2009 Michael Stapelberg and contributors
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*
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* See file LICENSE for license information.
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*
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*/
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#define _GNU_SOURCE
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#include <stdio.h>
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <stdbool.h>
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#include <assert.h>
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#include <xcb/xcb.h>
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#include <X11/XKBlib.h>
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#include <X11/extensions/XKB.h>
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#include <xcb/xcb_wm.h>
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#include <xcb/xcb_aux.h>
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#include <xcb/xcb_event.h>
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#include <xcb/xcb_property.h>
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#include <xcb/xcb_keysyms.h>
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#include <xcb/xcb_icccm.h>
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#include <xcb/xinerama.h>
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#include "data.h"
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#include "queue.h"
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#include "table.h"
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#include "font.h"
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#include "layout.h"
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#include "debug.h"
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#include "handlers.h"
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#include "util.h"
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#define TERMINAL "/usr/pkg/bin/urxvt"
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Display *xkbdpy;
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TAILQ_HEAD(bindings_head, Binding) bindings;
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xcb_event_handlers_t evenths;
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/* hm, xcb_wm wants us to implement this. */
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table_t *byChild = 0;
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table_t *byParent = 0;
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xcb_window_t root_win;
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char *pattern = "-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso8859-1";
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int num_screens = 0;
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/*
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*
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* TODO: what exactly does this, what happens if we leave stuff out?
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*
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*/
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void manage_window(xcb_property_handlers_t *prophs, xcb_connection_t *c, xcb_window_t window, window_attributes_t wa)
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{
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printf("managing window.\n");
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xcb_drawable_t d = { window };
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xcb_get_geometry_cookie_t geomc;
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xcb_get_geometry_reply_t *geom;
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xcb_get_window_attributes_reply_t *attr = 0;
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if(wa.tag == TAG_COOKIE)
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{
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attr = xcb_get_window_attributes_reply(c, wa.u.cookie, 0);
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if(!attr)
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return;
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if(attr->map_state != XCB_MAP_STATE_VIEWABLE)
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{
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printf("Window 0x%08x is not mapped. Ignoring.\n", window);
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free(attr);
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return;
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}
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wa.tag = TAG_VALUE;
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wa.u.override_redirect = attr->override_redirect;
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}
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if(!wa.u.override_redirect && table_get(byChild, window))
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{
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printf("Window 0x%08x already managed. Ignoring.\n", window);
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free(attr);
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return;
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}
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if(wa.u.override_redirect)
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{
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printf("Window 0x%08x has override-redirect set. Ignoring.\n", window);
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free(attr);
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return;
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}
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geomc = xcb_get_geometry(c, d);
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if(!attr)
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{
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wa.tag = TAG_COOKIE;
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wa.u.cookie = xcb_get_window_attributes(c, window);
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attr = xcb_get_window_attributes_reply(c, wa.u.cookie, 0);
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}
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geom = xcb_get_geometry_reply(c, geomc, 0);
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if(attr && geom)
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{
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reparent_window(c, window, attr->visual, geom->root, geom->depth, geom->x, geom->y, geom->width, geom->height);
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xcb_property_changed(prophs, XCB_PROPERTY_NEW_VALUE, window, WM_NAME);
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}
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free(attr);
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free(geom);
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}
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/*
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* reparent_window() gets called when a new window was opened and becomes a child of the root
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* window, or it gets called by us when we manage the already existing windows at startup.
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*
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* Essentially, this is the point, where we take over control.
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*
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*/
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void reparent_window(xcb_connection_t *conn, xcb_window_t child,
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xcb_visualid_t visual, xcb_window_t root, uint8_t depth,
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int16_t x, int16_t y, uint16_t width, uint16_t height) {
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Client *new = table_get(byChild, child);
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if (new == NULL) {
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/* TODO: When does this happen for existing clients? Is that a bug? */
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printf("oh, it's new\n");
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new = calloc(sizeof(Client), 1);
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/* We initialize x and y with the invalid coordinates -1 so that they will
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get updated at the next render_layout() at any case */
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new->x = -1;
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new->y = -1;
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}
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uint32_t mask = 0;
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uint32_t values[3];
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/* Insert into the currently active container */
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CIRCLEQ_INSERT_TAIL(&(CUR_CELL->clients), new, clients);
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/* Update the data structures */
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CUR_CELL->currently_focused = new;
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new->container = CUR_CELL;
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new->frame = xcb_generate_id(conn);
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new->child = child;
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new->width = width;
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new->height = height;
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/* Don’t generate events for our new window, it should *not* be managed */
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mask |= XCB_CW_OVERRIDE_REDIRECT;
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values[0] = 1;
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/* We want to know when… */
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mask |= XCB_CW_EVENT_MASK;
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values[1] = XCB_EVENT_MASK_BUTTON_PRESS | /* …mouse is pressed/released */
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XCB_EVENT_MASK_BUTTON_RELEASE |
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XCB_EVENT_MASK_EXPOSURE | /* …our window needs to be redrawn */
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XCB_EVENT_MASK_ENTER_WINDOW; /* …user moves cursor inside our window */
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printf("Reparenting 0x%08x under 0x%08x.\n", child, new->frame);
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i3Font *font = load_font(conn, pattern);
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/* Yo dawg, I heard you like windows, so I create a window around your window… */
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xcb_create_window(conn,
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depth,
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new->frame,
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root,
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x,
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y,
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width + 2 + 2, /* 2 px border at each side */
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height + 2 + 2 + font->height, /* 2 px border plus font’s height */
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0, /* border_width = 0, we draw our own borders */
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XCB_WINDOW_CLASS_INPUT_OUTPUT,
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visual,
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mask,
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values);
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xcb_change_save_set(conn, XCB_SET_MODE_INSERT, child);
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/* Map the window on the screen (= make it visible) */
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xcb_map_window(conn, new->frame);
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/* Generate a graphics context for the titlebar */
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new->titlegc = xcb_generate_id(conn);
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xcb_create_gc(conn, new->titlegc, new->frame, 0, 0);
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/* Put our data structure (Client) into the table */
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table_put(byParent, new->frame, new);
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table_put(byChild, child, new);
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/* Moves the original window into the new frame we've created for it */
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xcb_reparent_window(conn, child, new->frame, 0, font->height);
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/* We are interested in property changes */
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mask = XCB_CW_EVENT_MASK;
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values[0] = XCB_EVENT_MASK_PROPERTY_CHANGE |
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XCB_EVENT_MASK_STRUCTURE_NOTIFY |
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XCB_EVENT_MASK_ENTER_WINDOW |
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XCB_EVENT_MASK_BUTTON_PRESS;
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xcb_change_window_attributes(conn, child, mask, values);
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/* We need to grab the mouse buttons for click to focus */
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xcb_grab_button(conn, false, child, XCB_EVENT_MASK_BUTTON_PRESS,
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XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
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1 /* left mouse button */,
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XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
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/* Focus the new window */
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xcb_set_input_focus(conn, XCB_INPUT_FOCUS_NONE, new->child, XCB_CURRENT_TIME);
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render_layout(conn);
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}
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void manage_existing_windows(xcb_connection_t *c, xcb_property_handlers_t *prophs, xcb_window_t root) {
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xcb_query_tree_cookie_t wintree;
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xcb_query_tree_reply_t *rep;
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int i, len;
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xcb_window_t *children;
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xcb_get_window_attributes_cookie_t *cookies;
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wintree = xcb_query_tree(c, root);
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rep = xcb_query_tree_reply(c, wintree, 0);
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if(!rep)
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return;
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len = xcb_query_tree_children_length(rep);
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cookies = malloc(len * sizeof(*cookies));
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if(!cookies)
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{
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free(rep);
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return;
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}
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children = xcb_query_tree_children(rep);
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for(i = 0; i < len; ++i)
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cookies[i] = xcb_get_window_attributes(c, children[i]);
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for(i = 0; i < len; ++i)
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{
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window_attributes_t wa = { TAG_COOKIE, { cookies[i] } };
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manage_window(prophs, c, children[i], wa);
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}
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free(rep);
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}
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static void initialize_xinerama(xcb_connection_t *conn) {
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xcb_xinerama_query_screens_reply_t *reply;
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xcb_xinerama_screen_info_t *screen_info;
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int screen;
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if (!xcb_get_extension_data(conn, &xcb_xinerama_id)->present) {
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printf("Xinerama extension not found, disabling.\n");
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return;
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}
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if (!xcb_xinerama_is_active_reply(conn, xcb_xinerama_is_active(conn), NULL)->state) {
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printf("Xinerama is not active (in your X-Server), disabling.\n");
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return;
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}
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reply = xcb_xinerama_query_screens_reply(conn, xcb_xinerama_query_screens_unchecked(conn), NULL);
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/* TODO: error check */
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screen_info = xcb_xinerama_query_screens_screen_info(reply);
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num_screens = xcb_xinerama_query_screens_screen_info_length(reply);
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/* Just go through each workspace and associate as many screens as we can. */
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for (screen = 0; screen < num_screens; screen++) {
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workspaces[screen].x = screen_info[screen].x_org;
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workspaces[screen].y = screen_info[screen].y_org;
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workspaces[screen].width = screen_info[screen].width;
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workspaces[screen].height = screen_info[screen].height;
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workspaces[screen].screen_num = screen;
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printf("found Xinerama screen: %d x %d at %d x %d\n",
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screen_info[screen].width, screen_info[screen].height,
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screen_info[screen].x_org, screen_info[screen].y_org);
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}
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free(screen_info);
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}
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int main(int argc, char *argv[], char *env[]) {
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int i, screens;
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xcb_connection_t *c;
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xcb_property_handlers_t prophs;
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xcb_window_t root;
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/* Initialize the table data structures for each workspace */
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init_table();
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memset(&evenths, 0, sizeof(xcb_event_handlers_t));
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memset(&prophs, 0, sizeof(xcb_property_handlers_t));
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byChild = alloc_table();
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byParent = alloc_table();
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TAILQ_INIT(&bindings);
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c = xcb_connect(NULL, &screens);
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/* TODO: this has to be more beautiful somewhen */
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int major, minor, error;
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major = XkbMajorVersion;
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minor = XkbMinorVersion;
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int evBase, errBase;
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if ((xkbdpy = XkbOpenDisplay(getenv("DISPLAY"), &evBase, &errBase, &major, &minor, &error)) == NULL) {
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fprintf(stderr, "XkbOpenDisplay() failed\n");
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return 1;
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}
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int i1;
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if (!XkbQueryExtension(xkbdpy,&i1,&evBase,&errBase,&major,&minor)) {
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fprintf(stderr, "XKB not supported by X-server\n");
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return 1;
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}
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/* end of ugliness */
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xcb_event_handlers_init(c, &evenths);
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for(i = 2; i < 128; ++i)
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xcb_event_set_handler(&evenths, i, handle_event, 0);
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for(i = 0; i < 256; ++i)
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xcb_event_set_error_handler(&evenths, i, (xcb_generic_error_handler_t)handle_event, 0);
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/* Expose = an Application should redraw itself. That is, we have to redraw our
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* contents (= top/bottom bar, titlebars for each window) */
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xcb_event_set_expose_handler(&evenths, handle_expose_event, 0);
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/* Key presses/releases are pretty obvious, I think */
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xcb_event_set_key_press_handler(&evenths, handle_key_press, 0);
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xcb_event_set_key_release_handler(&evenths, handle_key_release, 0);
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/* Enter window = user moved his mouse over the window */
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xcb_event_set_enter_notify_handler(&evenths, handle_enter_notify, 0);
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/* Button press = user pushed a mouse button over one of our windows */
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xcb_event_set_button_press_handler(&evenths, handle_button_press, 0);
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xcb_event_set_unmap_notify_handler(&evenths, handle_unmap_notify_event, 0);
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xcb_property_handlers_init(&prophs, &evenths);
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xcb_event_set_map_notify_handler(&evenths, handle_map_notify_event, &prophs);
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xcb_watch_wm_name(&prophs, 128, handle_windowname_change, 0);
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root = xcb_aux_get_screen(c, screens)->root;
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root_win = root;
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uint32_t mask = XCB_CW_EVENT_MASK;
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uint32_t values[] = { XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_PROPERTY_CHANGE };
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xcb_change_window_attributes(c, root, mask, values);
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#define BIND(key, modifier, cmd) { \
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Binding *new = malloc(sizeof(Binding)); \
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new->keycode = key; \
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new->mods = modifier; \
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new->command = cmd; \
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TAILQ_INSERT_TAIL(&bindings, new, bindings); \
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}
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/* 38 = 'a' */
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BIND(38, BIND_MODE_SWITCH, "foo");
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BIND(30, 0, "exec /usr/pkg/bin/urxvt");
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BIND(44, BIND_MOD_1, "h");
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BIND(45, BIND_MOD_1, "j");
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BIND(46, BIND_MOD_1, "k");
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BIND(47, BIND_MOD_1, "l");
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BIND(44, BIND_MOD_1 | BIND_CONTROL, "sh");
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BIND(45, BIND_MOD_1 | BIND_CONTROL, "sj");
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BIND(46, BIND_MOD_1 | BIND_CONTROL, "sk");
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BIND(47, BIND_MOD_1 | BIND_CONTROL, "sl");
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BIND(44, BIND_MOD_1 | BIND_SHIFT, "mh");
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BIND(45, BIND_MOD_1 | BIND_SHIFT, "mj");
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BIND(46, BIND_MOD_1 | BIND_SHIFT, "mk");
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BIND(47, BIND_MOD_1 | BIND_SHIFT, "ml");
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BIND(10, BIND_MOD_1 , "1");
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BIND(11, BIND_MOD_1 , "2");
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BIND(12, BIND_MOD_1 , "3");
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BIND(13, BIND_MOD_1 , "4");
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BIND(14, BIND_MOD_1 , "5");
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BIND(15, BIND_MOD_1 , "6");
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BIND(16, BIND_MOD_1 , "7");
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BIND(17, BIND_MOD_1 , "8");
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BIND(18, BIND_MOD_1 , "9");
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BIND(19, BIND_MOD_1 , "0");
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Binding *bind;
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TAILQ_FOREACH(bind, &bindings, bindings) {
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printf("Grabbing %d\n", bind->keycode);
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if (bind->mods & BIND_MODE_SWITCH)
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xcb_grab_key(c, 0, root, 0, bind->keycode, XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_SYNC);
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else xcb_grab_key(c, 0, root, bind->mods, bind->keycode, XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC);
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}
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/* check for Xinerama */
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printf("Checking for Xinerama...\n");
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initialize_xinerama(c);
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start_application(TERMINAL);
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xcb_flush(c);
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manage_existing_windows(c, &prophs, root);
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xcb_event_wait_for_event_loop(&evenths);
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/* not reached */
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return 0;
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}
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