/**
* Update the hoverEntry with the currently hovered entry, or none if none is hovered. Repaints
* and informs listeners if something has changed.
*
* @param p Where the mouse is currently.
*/
private void updateHoverEntry(Point p) {
long hoverEntryBefore = hoverEntry;
hoverEntry = findHoverEntry(p);
// If something has changed, then redraw.
if (hoverEntry != hoverEntryBefore) {
repaint();
if (listener != null) {
if (hoverEntry == -1) {
listener.noItemSelected();
} else {
StreamInfoHistoryItem item = history.get(hoverEntry);
if (item == null) {
/**
* This shouldn't happen, because the hover entry is set just before and selected from
* the current data (and it should all be in the EDT), but apparently it still happens
* on rare occasions.
*/
LOGGER.warning("Hovered Entry " + hoverEntry + " was null");
hoverEntry = -1;
} else {
listener.itemSelected(item.getViewers(), item.getTitle(), item.getGame());
}
}
}
}
}
/**
* Update the start/end/duration/min/max variables which can be changed when the data changes as
* well when the displayed range changes.
*/
private void updateVars() {
long startAt = getStartAt(currentRange);
long endAt = getEndAt();
int max = 0;
int min = -1;
long start = -1;
long end = -1;
for (Long time : history.keySet()) {
if (time < startAt) {
continue;
}
if (endAt > startAt && time > endAt) {
continue;
}
// Start/End time
if (start == -1) {
start = time;
}
end = time;
// Max/min value
StreamInfoHistoryItem historyObj = history.get(time);
int viewerCount = historyObj.getViewers();
if (viewerCount < min || min == -1) {
min = viewerCount;
}
if (viewerCount == -1) {
min = 0;
}
if (viewerCount > max) {
max = viewerCount;
}
}
maxValue = max;
minValue = min;
startTime = start;
endTime = end;
duration = end - start;
}