Uses 1113K of libraries. Click here for Pure Java version (4138L/22K).
1 | !7 |
2 | |
3 | cm ScribbleDemo > DynPrintLog {
|
4 | !include #1029545 // API for Eleu |
5 | |
6 | transient Set<virtual WebSocket> webSockets = syncWeakHashSet(); |
7 | |
8 | O html(virtual Request request) {
|
9 | S uri = cast get(request, 'uri); |
10 | SS params = cast get(request, 'params); |
11 | |
12 | if (eq(uri, "/script")) |
13 | ret subBot_serveJavaScript(linesLL( |
14 | "document.body.innerHTML += " + jsQuote(mainElements()) + ";", |
15 | "document.body.innerHTML += " + jsQuote(mainCSS()) + ";", |
16 | loadSnippet(#1013374), // ReconnectingWebSocket |
17 | loadSnippet(#1029696), // scribble.js |
18 | mainJSCode() |
19 | )); |
20 | |
21 | if (eq(uri, "/scriptTest")) |
22 | ret hhtml(hhead( |
23 | htitle("Scribble Embed Test")
|
24 | + loadJQuery()) |
25 | + hbody(hjavascript_src("https://www.actualbackground.website/script")));
|
26 | |
27 | ret hhtml(hhead(htitle("Scribble")
|
28 | + loadJQuery() |
29 | + hreconnectingWebSockets() |
30 | + mainCSS()) |
31 | + hbody( |
32 | hfulltag canvas("", id := "scribble")
|
33 | + div("?", id := "scribblePeopleCounter")
|
34 | + hjssnippet(#1029696) |
35 | + hjs(mainJSCode()) |
36 | )); |
37 | } |
38 | |
39 | S mainElements() {
|
40 | ret hfulltag canvas("", id := "scribble")
|
41 | + div("?", id := "scribblePeopleCounter");
|
42 | } |
43 | |
44 | S mainCSS() {
|
45 | ret hcss([[ |
46 | /*body { margin: 0 !important; padding: 0 !important; }*/
|
47 | |
48 | #scribble {
|
49 | position: absolute; |
50 | top: 0; left: 0; |
51 | z-index: 100; |
52 | } |
53 | |
54 | #scribblePeopleCounter {
|
55 | position: absolute; |
56 | top: 10px; right: 10px; |
57 | width: 100px; |
58 | text-align: right; |
59 | z-index: 101; |
60 | pointer-events: none; |
61 | color: white; |
62 | } |
63 | ]]); |
64 | } |
65 | |
66 | S mainJSCode() {
|
67 | ret [[ |
68 | function resized() {
|
69 | canvas.width = document.body.clientWidth; |
70 | canvas.height = document.body.clientHeight; |
71 | } |
72 | resized(); |
73 | $(window).bind("resize", resized);
|
74 | |
75 | // JavaScript WebSocket handling |
76 | var wsReady = false; |
77 | var ws = new ReconnectingWebSocket(((window.location.protocol === "https:") ? "wss://" : "ws://") + window.location.host + "/"); |
78 | //var ws = new ReconnectingWebSocket("wss://www.actualbackground.website");
|
79 | ws.onopen = function(event) { wsReady = true; };
|
80 | ws.onmessage = function(event) {
|
81 | var data = JSON.parse(event.data); |
82 | if (data.counter) |
83 | $("#scribblePeopleCounter").html(data.counter);
|
84 | else |
85 | drawStroke(data.x1, data.y1, data.x2, data.y2, data.mouseDown); |
86 | }; |
87 | sendStroke = function(data) {
|
88 | //console.log(data); |
89 | if (wsReady) |
90 | ws.send(JSON.stringify(data)); |
91 | }; |
92 | ]]; |
93 | } |
94 | |
95 | void handleWebSocket(virtual WebSocket ws) {
|
96 | set(ws, onClose := r { webSockets.remove(ws); wsCounterUpdate(); });
|
97 | |
98 | setFieldToIVF1Proxy(ws, onMessage := msg -> { temp enter(); pcall {
|
99 | S data = rcall_string getTextPayload(msg); |
100 | distributeEvent(data, ws); |
101 | }}); |
102 | |
103 | set(ws, onOpen := rEnter {
|
104 | print("WebSocket opened!");
|
105 | webSockets.add(ws); wsCounterUpdate(); |
106 | }); |
107 | } |
108 | |
109 | void wsCounterUpdate {
|
110 | distributeEvent(jsonEncode(litmap(counter := nUsers(webSockets) + " online"))); |
111 | } |
112 | |
113 | void distributeEvent(S data, virtual WebSocket sendingWebSocket default null) {
|
114 | L<virtual WebSocket> sockets = cloneList(webSockets); |
115 | print("Distributing event to " + n2(sockets, "web socket") + ": " + data);
|
116 | for (virtual WebSocket ws : sockets) pcall {
|
117 | if (ws == sendingWebSocket) continue; |
118 | try {
|
119 | call(ws, "send", data); |
120 | } catch e {
|
121 | print("Removing faulty WebSocket");
|
122 | webSockets.remove(ws); wsCounterUpdate(); |
123 | call(ws, "close"); |
124 | } |
125 | } |
126 | } |
127 | |
128 | void cleanMeUp_webSockets {
|
129 | for (virtual WebSocket ws : cloneAndClearList(webSockets)) {
|
130 | print("Closing WebSocket");
|
131 | close((AutoCloseable) ws); |
132 | } |
133 | } |
134 | } |
Began life as a copy of #1010027
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| Snippet ID: | #1029697 |
| Snippet name: | "Scribble" [LIVE at scribble.gazelle.rocks] |
| Eternal ID of this version: | #1029697/42 |
| Text MD5: | fa6a0e3465e06a61be3e96df081c0439 |
| Transpilation MD5: | 8d2c31739436c98af186637b05d85700 |
| Author: | stefan |
| Category: | javax / networking |
| Type: | JavaX source code (Dynamic Module) |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2021-08-24 21:57:30 |
| Source code size: | 3996 bytes / 134 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 189 / 31985 |
| Version history: | 41 change(s) |
| Referenced in: | [show references] |