blob: 61c0df721d0439c24b948a081761e89647cbe66f [file] [log] [blame] [raw]
"use strict";
/**
* @constructor
*
* @param {BusConnector} bus
*/
function MouseAdapter(bus, screen_container)
{
/** @const */
var SPEED_FACTOR = 0.15;
var left_down = false,
right_down = false,
middle_down = false,
last_x = 0,
last_y = 0,
mouse = this;
// set by controller
this.enabled = false;
// set by emulator
this.emu_enabled = true;
this.bus = bus;
this.bus.register("mouse-enable", function(enabled)
{
this.enabled = enabled;
}, this);
this.destroy = function()
{
window.removeEventListener("touchstart", touch_start_handler, false);
window.removeEventListener("touchend", touch_end_handler, false);
window.removeEventListener("touchmove", mousemove_handler, false);
window.removeEventListener("mousemove", mousemove_handler, false);
document.removeEventListener("contextmenu", contextmenu_handler, false);
window.removeEventListener("mousedown", mousedown_handler, false);
window.removeEventListener("mouseup", mouseup_handler, false);
window.removeEventListener("DOMMouseScroll", mousewheel_handler, false);
window.removeEventListener("mousewheel", mousewheel_handler, false);
};
this.init = function()
{
if(typeof window === "undefined")
{
return;
}
this.destroy();
window.addEventListener("touchstart", touch_start_handler, false);
window.addEventListener("touchend", touch_end_handler, false);
window.addEventListener("touchmove", mousemove_handler, false);
window.addEventListener("mousemove", mousemove_handler, false);
document.addEventListener("contextmenu", contextmenu_handler, false);
window.addEventListener("mousedown", mousedown_handler, false);
window.addEventListener("mouseup", mouseup_handler, false);
window.addEventListener("DOMMouseScroll", mousewheel_handler, false);
window.addEventListener("mousewheel", mousewheel_handler, false);
};
this.init();
function is_child(child, parent)
{
while(child.parentNode)
{
if(child === parent)
{
return true;
}
child = child.parentNode;
}
return false;
}
function may_handle(e)
{
if(!mouse.enabled || !mouse.emu_enabled)
{
return false;
}
if(e.type === "mousemove" || e.type === "touchmove")
{
return true;
}
if(e.type === "mousewheel" || e.type === "DOMMouseScroll")
{
var parent = screen_container || document.body;
return is_child(e.target, parent);
}
return !e.target || e.target.nodeName !== "INPUT" && e.target.nodeName !== "TEXTAREA";
}
function touch_start_handler(e)
{
if(may_handle(e))
{
var touches = e["changedTouches"];
if(touches && touches.length)
{
var touch = touches[touches.length - 1];
last_x = touch.clientX;
last_y = touch.clientY;
}
}
}
function touch_end_handler(e)
{
if(left_down || middle_down || right_down)
{
mouse.bus.send("mouse-click", [false, false, false]);
left_down = middle_down = right_down = false;
}
}
function mousemove_handler(e)
{
if(!mouse.bus)
{
return;
}
if(!may_handle(e))
{
return;
}
var delta_x = 0;
var delta_y = 0;
var touches = e["changedTouches"];
if(touches)
{
if(touches.length)
{
var touch = touches[touches.length - 1];
delta_x = touch.clientX - last_x;
delta_y = touch.clientY - last_y;
last_x = touch.clientX;
last_y = touch.clientY;
e.preventDefault();
}
}
else
{
if(typeof e["movementX"] === "number")
{
delta_x = e["movementX"];
delta_y = e["movementY"];
}
else if(typeof e["webkitMovementX"] === "number")
{
delta_x = e["webkitMovementX"];
delta_y = e["webkitMovementY"];
}
else if(typeof e["mozMovementX"] === "number")
{
delta_x = e["mozMovementX"];
delta_y = e["mozMovementY"];
}
else
{
// Fallback for other browsers?
delta_x = e.clientX - last_x;
delta_y = e.clientY - last_y;
last_x = e.clientX;
last_y = e.clientY;
}
}
if(SPEED_FACTOR !== 1)
{
delta_x = delta_x * SPEED_FACTOR;
delta_y = delta_y * SPEED_FACTOR;
}
//if(Math.abs(delta_x) > 100 || Math.abs(delta_y) > 100)
//{
// // Large mouse delta, drop?
//}
delta_y = -delta_y;
mouse.bus.send("mouse-delta", [delta_x, delta_y]);
}
function contextmenu_handler(e)
{
if(may_handle(e))
{
e.preventDefault();
}
}
function mousedown_handler(e)
{
if(may_handle(e))
{
click_event(e, true);
}
}
function mouseup_handler(e)
{
if(may_handle(e))
{
click_event(e, false);
}
}
function click_event(e, down)
{
if(!mouse.bus)
{
return;
}
if(e.which === 1)
{
left_down = down;
}
else if(e.which === 2)
{
middle_down = down;
}
else if(e.which === 3)
{
right_down = down;
}
else
{
console.log("Unknown event.which: " + e.which);
}
mouse.bus.send("mouse-click", [left_down, middle_down, right_down]);
e.preventDefault();
}
function mousewheel_handler(e)
{
if(!may_handle(e))
{
return;
}
var delta_x = e.wheelDelta || -e.detail;
var delta_y = 0;
if(delta_x < 0)
{
delta_x = -1;
}
else if(delta_x > 0)
{
delta_x = 1;
}
mouse.bus.send("mouse-wheel", [delta_x, delta_y]);
e.preventDefault();
}
}