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6c708f25 AT |
1 | package main |
2 | ||
3 | import ( | |
4 | "fmt" | |
5 | "log" | |
6 | "os" | |
7 | "os/exec" | |
8 | ||
9 | "github.com/jezek/xgb" | |
6c708f25 AT |
10 | "github.com/jezek/xgb/xproto" |
11 | ) | |
12 | ||
13 | // TODO: Make a separate keysym file and fully populate it. | |
14 | const ( | |
15 | XK_q = 0x0071 | |
16 | XK_Return = 0xff0d | |
17 | ) | |
18 | ||
12099ed6 AT |
19 | // TODO: These module-level global variables have arisen while establishing |
20 | // basic functionality. Before proceeding much further, figure out what to do | |
21 | // with them. | |
6c708f25 | 22 | var xc *xgb.Conn |
6c708f25 AT |
23 | var keymap [256][]xproto.Keysym |
24 | ||
25 | func main() { | |
19cbf0a1 AT |
26 | xconn := connectToXServer() |
27 | attachedScreens := getAttachedScreens(xconn) | |
28 | xroot := getXRoot(xconn) | |
29 | keymap = getKeyboardMap(xconn) | |
30 | registerForKeyEvents(xconn, xroot, keymap) | |
12099ed6 | 31 | |
19cbf0a1 | 32 | becomeWM(xconn, xroot) |
12099ed6 | 33 | |
19cbf0a1 | 34 | // Build a list of windows needing management ------------------------------ |
6c708f25 | 35 | |
19cbf0a1 AT |
36 | xc = xconn |
37 | if len(attachedScreens) > 0 { | |
38 | fmt.Println("The Go compiler is waaaaay too picky about unused variables...") | |
6c708f25 AT |
39 | } |
40 | ||
6c708f25 AT |
41 | tree, err := xproto.QueryTree(xc, xroot.Root).Reply() |
42 | if err != nil { | |
43 | log.Fatal(err) | |
44 | } | |
45 | if tree != nil { | |
46 | //workspaces = make(map[string]*Workspace) | |
47 | //defaultw := &Workspace{mu: &sync.Mutex{}} | |
48 | for _, c := range tree.Children { | |
49 | if isMappedWindow(c) { | |
50 | // err := defaultw.Add(c) | |
51 | // if err != nil { | |
52 | // log.Println(err) | |
53 | // } | |
54 | fmt.Println("ILLI: Found a client.") | |
55 | } | |
56 | ||
57 | } | |
58 | ||
59 | // if len(attachedScreens) > 0 { | |
60 | // defaultw.Screen = &attachedScreens[0] | |
61 | // } | |
62 | // | |
63 | // workspaces["default"] = defaultw | |
64 | // | |
65 | // if err := defaultw.TileWindows(); err != nil { | |
66 | // log.Println(err) | |
67 | // } | |
68 | ||
69 | } | |
70 | ||
12099ed6 AT |
71 | // Main program loop reacts to X events ------------------------------------ |
72 | ||
6c708f25 AT |
73 | eventloop: |
74 | for { | |
75 | xevent, err := xc.WaitForEvent() | |
76 | if err != nil { | |
77 | log.Println(err) | |
78 | continue | |
79 | } | |
80 | switch e := xevent.(type) { | |
81 | case xproto.KeyPressEvent: | |
82 | if err := handleKeyPressEvent(e); err != nil { | |
83 | break eventloop | |
84 | } | |
85 | default: | |
86 | log.Println(xevent) | |
87 | } | |
88 | } | |
89 | } | |
90 | ||
12099ed6 AT |
91 | // The client list appears to have some entries for windows that shouldn't |
92 | // actually be viewable. For now, it appears that only windows with a | |
93 | // `MapState` value of 2 should be viewable. TODO: Verify this. | |
94 | // - https://github.com/BurntSushi/xgb/blob/master/xproto/xproto.go#L3772 | |
95 | // - https://github.com/BurntSushi/xgb/blob/master/xproto/xproto.go#L10287 | |
6c708f25 AT |
96 | func isMappedWindow(windowID xproto.Window) bool { |
97 | reply, err := xproto.GetWindowAttributes(xc, windowID).Reply() | |
98 | if err != nil { | |
99 | log.Fatal(err) | |
100 | } | |
6c708f25 AT |
101 | if reply != nil && reply.MapState == 2 { |
102 | return true | |
103 | } | |
104 | return false | |
105 | } | |
106 | ||
12099ed6 AT |
107 | // TODO: Determine how I want to split the main event loop from the various |
108 | // event handlers (like this keypress handler). It shouldn't grow too | |
109 | // fragmented, nor should it grow into a monolithic beast, but the balance | |
110 | // needs to be selected after the handlers are built out more completely. | |
6c708f25 AT |
111 | func handleKeyPressEvent(key xproto.KeyPressEvent) error { |
112 | switch keymap[key.Detail][0] { | |
113 | case XK_q: | |
114 | switch key.State { | |
115 | case xproto.ModMask1 | xproto.ModMaskShift: | |
116 | // TODO: Where and how do I want to handle exit/restart? | |
117 | // ------------------------- | |
118 | // We must manually close the X connection since we used | |
119 | // `defer` when setting it up and os.Exit() short-circuits | |
120 | // that deferral. | |
121 | xc.Close() | |
122 | os.Exit(0) | |
123 | } | |
124 | case XK_Return: | |
125 | switch key.State { | |
126 | case xproto.ModMask1 | xproto.ModMaskShift: | |
127 | cmd := exec.Command("xterm") | |
128 | err := cmd.Start() | |
129 | if err != nil { | |
130 | log.Fatal(err) | |
131 | } | |
132 | } | |
133 | default: | |
134 | return nil | |
135 | } | |
12099ed6 | 136 | return nil // TODO: What do I actually want to return here? |
6c708f25 | 137 | } |