isPositionOnTitle method
Returns true if the local coordinates localX and localY lie on the title text.
Implementation
bool isPositionOnTitle(int localX, int localY) {
if (localY != 0 || title.isEmpty) return false;
final w = bounds.width;
if (w < 2) return false;
final titleChars = title.characters;
final maxTitleLen = w - 4;
String displayedTitle;
if (titleChars.length > maxTitleLen) {
final cutLen = w - 7;
if (cutLen > 0) {
displayedTitle = ' ${titleChars.take(cutLen).toString()}... ';
} else {
displayedTitle = '';
}
} else {
displayedTitle = ' $title ';
}
if (displayedTitle.isEmpty) return false;
final dispChars = displayedTitle.characters;
final titleX = max(1, min(w - 2, ((w - dispChars.length) / 2).floor()));
return localX >= titleX && localX < titleX + dispChars.length;
}