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function Mouse() {
var self = this;
/********************************************************************************/
var __ws = null;
var __current_pos = {x: 0, y:0};
var __sent_pos = {x: 0, y:0};
var __stream_hovered = false;
var __init__ = function() {
$("hid-mouse-led").title = "Mouse free";
$("stream-box").onmouseenter = __hoverStream;
$("stream-box").onmouseleave = __leaveStream;
$("stream-box").onmousedown = (event) => __buttonHandler(event, true);
$("stream-box").onmouseup = (event) => __buttonHandler(event, false);
$("stream-box").oncontextmenu = (event) => event.preventDefault();
$("stream-box").onmousemove = __moveHandler;
$("stream-box").onwheel = __wheelHandler;
setInterval(__sendMove, 100);
};
/********************************************************************************/
self.setSocket = function(ws) {
__ws = ws;
if (ws) {
$("stream-box").classList.add("stream-box-mouse-enabled");
} else {
$("stream-box").classList.remove("stream-box-mouse-enabled");
}
};
self.updateLeds = function() {
if (__ws && __stream_hovered) {
$("hid-mouse-led").className = "led-on";
$("hid-mouse-led").title = "Mouse tracked";
} else {
$("hid-mouse-led").className = "led-off";
$("hid-mouse-led").title = "Mouse free";
}
};
var __hoverStream = function() {
__stream_hovered = true;
self.updateLeds();
};
var __leaveStream = function() {
__stream_hovered = false;
self.updateLeds();
};
var __buttonHandler = function(event, state) {
// https://www.w3schools.com/jsref/event_button.asp
var button = null;
switch (event.button) {
case 0: button = "left"; break;
case 2: button = "right"; break;
}
if (button) {
event.preventDefault();
tools.debug("Mouse button", (state ? "pressed:" : "released:"), button);
__sendMove();
if (__ws) {
__ws.send(JSON.stringify({
event_type: "mouse_button",
button: button,
state: state,
}));
}
}
};
var __moveHandler = function(event) {
var rect = event.target.getBoundingClientRect();
__current_pos = {
x: Math.round(event.clientX - rect.left),
y: Math.round(event.clientY - rect.top),
};
};
var __sendMove = function() {
var pos = __current_pos;
if (pos.x !== __sent_pos.x || pos.y !== __sent_pos.y) {
var el_stream_image = $("stream-image");
var to = {
x: __translate(pos.x, 0, el_stream_image.clientWidth, -32768, 32767),
y: __translate(pos.y, 0, el_stream_image.clientHeight, -32768, 32767),
};
tools.debug("Mouse move:", to);
if (__ws) {
__ws.send(JSON.stringify({
event_type: "mouse_move",
to: to,
}));
}
__sent_pos = pos;
}
};
var __translate = function(x, a, b, c, d) {
return Math.round((x - a) / (b - a) * (d - c) + c);
};
var __wheelHandler = function(event) {
// https://learn.javascript.ru/mousewheel
if (event.preventDefault) {
event.preventDefault();
}
var delta = {x: event.deltaX, y: event.deltaY};
tools.debug("Mouse wheel:", delta);
if (__ws) {
__ws.send(JSON.stringify({
event_type: "mouse_wheel",
delta: delta,
}));
}
};
__init__();
}
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