/**
* Since every GUI page can display the FPS or realtime counter,
* this manager is initialized for every GUI page.
*/
var g_OverlayCounterManager;
class OverlayCounterManager
{
constructor(dataCounter)
{
this.dataCounter = dataCounter;
this.counters = [];
this.enabledCounters = [];
this.lastTick = undefined;
this.resizeHandlers = [];
this.lastHeight = undefined;
for (let name of this.availableCounterNames())
{
let counterType = OverlayCounterTypes.prototype[name];
if (counterType.IsAvailable && !counterType.IsAvailable())
continue;
let counter = new counterType(this);
this.counters.push(counter);
counter.updateEnabled();
}
this.dataCounter.onTick = this.onTick.bind(this);
}
/**
* Mods may overwrite this to change the order of the counters shown.
*/
availableCounterNames()
{
return Object.keys(OverlayCounterTypes.prototype);
}
deleteCounter(counter)
{
let filter = count => count != counter;
this.counters = this.counters.filter(filter);
this.enabledCounters = this.enabledCounters.filter(filter);
}
/**
* This function allows enabling and disabling of timers while preserving the counter order.
*/
setCounterEnabled(counter, enabled)
{
if (enabled)
this.enabledCounters = this.counters.filter(count =>
this.enabledCounters.indexOf(count) != -1 || count == counter);
else
this.enabledCounters = this.enabledCounters.filter(count => count != counter);
// Update instantly
this.lastTick = undefined;
this.onTick();
}
/**
* Handlers subscribed here will be informed when the dimension of the overlay changed.
* This allows placing the buttons away from the counter.
*/
registerResizeHandler(handler)
{
this.resizeHandlers.push(handler);
}
onTick()
{
// Don't rebuild the caption every frame.
const now = Date.now();
if (now < this.lastTick + this.Delay)
return;
this.lastTick = now;
let txt = "";
for (let counter of this.enabledCounters)
{
const newTxt = counter.get();
if (newTxt)
txt += newTxt + "\n";
}
let height;
if (txt)
{
this.dataCounter.caption = txt;
const size = resizeGUIObjectToCaption(this.dataCounter, this.Alignment, this.Margins);
height = size.bottom - size.top;
}
else
height = 0;
this.dataCounter.hidden = !txt;
if (this.lastHeight != height)
{
this.lastHeight = height;
for (let handler of this.resizeHandlers)
handler(height);
}
}
}
/**
* To minimize the computation performed every frame, this duration
* in milliseconds determines how often the caption is rebuilt.
*/
OverlayCounterManager.prototype.Delay = 250;
/**
* The parameters to resize the data counter to.
*/
OverlayCounterManager.prototype.Alignment = {
"horizontal": "left",
"vertical": "bottom"
};
OverlayCounterManager.prototype.Margins = {
"vertical": -2
};