Commit | Line | Data |
---|---|---|
6c708f25 AT |
1 | package main |
2 | ||
3 | import ( | |
4 | "fmt" | |
5 | "log" | |
6 | "os" | |
7 | "os/exec" | |
8 | ||
9 | "github.com/jezek/xgb" | |
10 | "github.com/jezek/xgb/xinerama" | |
11 | "github.com/jezek/xgb/xproto" | |
12 | ) | |
13 | ||
14 | // TODO: Make a separate keysym file and fully populate it. | |
15 | const ( | |
16 | XK_q = 0x0071 | |
17 | XK_Return = 0xff0d | |
18 | ) | |
19 | ||
20 | var xc *xgb.Conn | |
21 | var attachedScreens []xinerama.ScreenInfo | |
22 | var xroot xproto.ScreenInfo | |
23 | var keymap [256][]xproto.Keysym | |
24 | ||
25 | func main() { | |
26 | xConn, err := xgb.NewConn() | |
27 | if err != nil { | |
28 | log.Fatal(err) | |
29 | } | |
30 | xc = xConn | |
31 | defer xc.Close() | |
32 | ||
33 | setup := xproto.Setup(xc) | |
34 | if setup == nil || len(setup.Roots) < 1 { | |
35 | log.Fatal("ILLI: Unable to parse received SetupInfo from X11 server.") | |
36 | } | |
37 | ||
38 | if err := xinerama.Init(xc); err != nil { | |
39 | log.Fatal(err) | |
40 | } | |
41 | ||
42 | if r, err := xinerama.QueryScreens(xc).Reply(); err != nil { | |
43 | log.Fatal(err) | |
44 | } else { | |
45 | if len(r.ScreenInfo) == 0 { | |
46 | attachedScreens = []xinerama.ScreenInfo{ | |
47 | xinerama.ScreenInfo{ | |
48 | Width: setup.Roots[0].WidthInPixels, | |
49 | Height: setup.Roots[0].HeightInPixels, | |
50 | }, | |
51 | } | |
52 | } else { | |
53 | attachedScreens = r.ScreenInfo | |
54 | } | |
55 | } | |
56 | ||
57 | connInfo := xproto.Setup(xc) | |
58 | if connInfo == nil { | |
59 | log.Fatal("ILLI: Unable to parse X connection information") | |
60 | } | |
61 | if len(connInfo.Roots) != 1 { | |
62 | log.Fatal("ILLI: Inappropriate number of roots. Did xinerama initialize correctly?") | |
63 | } | |
64 | xroot = connInfo.Roots[0] | |
65 | ||
66 | // Attempt to register as the window manager | |
67 | if err := TakeWMOwnership(); err != nil { | |
68 | if _, ok := err.(xproto.AccessError); ok { | |
69 | log.Fatal("ILLI: Unable to register as window manager with X server. Perhaps another WM is already running?") | |
70 | } | |
71 | log.Fatal(err) | |
72 | } | |
73 | ||
74 | fmt.Println("ILLI: Successfully registered as WM with X server.") | |
75 | ||
76 | // ----------------------------------------------------------------------------- | |
77 | ||
78 | const ( | |
79 | loKey = 8 | |
80 | hiKey = 255 | |
81 | ) | |
82 | ||
83 | m := xproto.GetKeyboardMapping(xc, loKey, hiKey-loKey+1) | |
84 | reply, err := m.Reply() | |
85 | if err != nil { | |
86 | log.Fatal(err) | |
87 | } | |
88 | if reply == nil { | |
89 | log.Fatal("Could not load keyboard map") | |
90 | } | |
91 | ||
92 | for i := 0; i < hiKey-loKey+1; i++ { | |
93 | keymap[loKey+i] = reply.Keysyms[i*int(reply.KeysymsPerKeycode) : (i+1)*int(reply.KeysymsPerKeycode)] | |
94 | } | |
95 | grabs := []struct { | |
96 | sym xproto.Keysym | |
97 | modifiers uint16 | |
98 | codes []xproto.Keycode | |
99 | }{ | |
100 | { | |
101 | sym: XK_q, | |
102 | modifiers: xproto.ModMask1 | xproto.ModMaskShift, | |
103 | }, | |
104 | { | |
105 | sym: XK_Return, | |
106 | modifiers: xproto.ModMask1 | xproto.ModMaskShift, | |
107 | }, | |
108 | } | |
109 | ||
110 | for i, syms := range keymap { | |
111 | for _, sym := range syms { | |
112 | for c := range grabs { | |
113 | if grabs[c].sym == sym { | |
114 | grabs[c].codes = append(grabs[c].codes, xproto.Keycode(i)) | |
115 | } | |
116 | } | |
117 | } | |
118 | } | |
119 | for _, grabbed := range grabs { | |
120 | for _, code := range grabbed.codes { | |
121 | if err := xproto.GrabKeyChecked( | |
122 | xc, | |
123 | false, | |
124 | xroot.Root, | |
125 | grabbed.modifiers, | |
126 | code, | |
127 | xproto.GrabModeAsync, | |
128 | xproto.GrabModeAsync, | |
129 | ).Check(); err != nil { | |
130 | log.Print(err) | |
131 | } | |
132 | ||
133 | } | |
134 | } | |
135 | ||
136 | // ----------------------------------------------------------------------------- | |
137 | ||
138 | tree, err := xproto.QueryTree(xc, xroot.Root).Reply() | |
139 | if err != nil { | |
140 | log.Fatal(err) | |
141 | } | |
142 | if tree != nil { | |
143 | //workspaces = make(map[string]*Workspace) | |
144 | //defaultw := &Workspace{mu: &sync.Mutex{}} | |
145 | for _, c := range tree.Children { | |
146 | if isMappedWindow(c) { | |
147 | // err := defaultw.Add(c) | |
148 | // if err != nil { | |
149 | // log.Println(err) | |
150 | // } | |
151 | fmt.Println("ILLI: Found a client.") | |
152 | } | |
153 | ||
154 | } | |
155 | ||
156 | // if len(attachedScreens) > 0 { | |
157 | // defaultw.Screen = &attachedScreens[0] | |
158 | // } | |
159 | // | |
160 | // workspaces["default"] = defaultw | |
161 | // | |
162 | // if err := defaultw.TileWindows(); err != nil { | |
163 | // log.Println(err) | |
164 | // } | |
165 | ||
166 | } | |
167 | ||
168 | eventloop: | |
169 | for { | |
170 | xevent, err := xc.WaitForEvent() | |
171 | if err != nil { | |
172 | log.Println(err) | |
173 | continue | |
174 | } | |
175 | switch e := xevent.(type) { | |
176 | case xproto.KeyPressEvent: | |
177 | if err := handleKeyPressEvent(e); err != nil { | |
178 | break eventloop | |
179 | } | |
180 | default: | |
181 | log.Println(xevent) | |
182 | } | |
183 | } | |
184 | } | |
185 | ||
186 | func TakeWMOwnership() error { | |
187 | return xproto.ChangeWindowAttributesChecked( | |
188 | xc, | |
189 | xroot.Root, | |
190 | xproto.CwEventMask, | |
191 | []uint32{ | |
192 | xproto.EventMaskKeyPress | | |
193 | xproto.EventMaskKeyRelease | | |
194 | xproto.EventMaskButtonPress | | |
195 | xproto.EventMaskButtonRelease | | |
196 | xproto.EventMaskStructureNotify | | |
197 | xproto.EventMaskSubstructureRedirect, | |
198 | }).Check() | |
199 | } | |
200 | ||
201 | func isMappedWindow(windowID xproto.Window) bool { | |
202 | reply, err := xproto.GetWindowAttributes(xc, windowID).Reply() | |
203 | if err != nil { | |
204 | log.Fatal(err) | |
205 | } | |
206 | // TODO: Verify this. | |
207 | // It appears that only windows with a `MapState` value of 2 should be 'viewable'. | |
208 | // - https://github.com/BurntSushi/xgb/blob/master/xproto/xproto.go#L3772 | |
209 | // - https://github.com/BurntSushi/xgb/blob/master/xproto/xproto.go#L10287 | |
210 | if reply != nil && reply.MapState == 2 { | |
211 | return true | |
212 | } | |
213 | return false | |
214 | } | |
215 | ||
216 | func handleKeyPressEvent(key xproto.KeyPressEvent) error { | |
217 | switch keymap[key.Detail][0] { | |
218 | case XK_q: | |
219 | switch key.State { | |
220 | case xproto.ModMask1 | xproto.ModMaskShift: | |
221 | // TODO: Where and how do I want to handle exit/restart? | |
222 | // ------------------------- | |
223 | // We must manually close the X connection since we used | |
224 | // `defer` when setting it up and os.Exit() short-circuits | |
225 | // that deferral. | |
226 | xc.Close() | |
227 | os.Exit(0) | |
228 | } | |
229 | case XK_Return: | |
230 | switch key.State { | |
231 | case xproto.ModMask1 | xproto.ModMaskShift: | |
232 | cmd := exec.Command("xterm") | |
233 | err := cmd.Start() | |
234 | if err != nil { | |
235 | log.Fatal(err) | |
236 | } | |
237 | } | |
238 | default: | |
239 | return nil | |
240 | } | |
241 | return nil // What do I actually want to return here? | |
242 | } |