public static CursorPosition FromViewLine(ViewLine l, int charIndex)
{
return(new CursorPosition()
{
Message = l.Message,
DisplayIndex = l.LineIndex,
TextLineIndex = l.TextLineIndex,
LineCharIndex = charIndex
});
}
static (double, List <(int, int)>) FindRepaintRegions(IReadOnlyList <ViewLine> list1, IReadOnlyList <ViewLine> list2)
{
var LookingForFirstMatch = 0;
var LookingForDiff = 1;
var LookingForSecondMatch = 2;
var state = LookingForFirstMatch;
int idx1 = 0;
int idx2 = 0;
while (idx1 < list1.Count && idx2 < list2.Count)
{
var cmp = ViewLine.Compare(list1[idx1], list2[idx2]);
if (state == LookingForFirstMatch)
{
if (cmp == (0, false))
{
state = LookingForDiff;
// todo: compute scroll dist AND optional first repaint region
}
}
else if (state == LookingForDiff)
{
if (cmp.relativeOrder != 0)
{
// todo: repaint rest of messages
break;
}
if (cmp.changed)
{
state = LookingForSecondMatch;
}
}
else if (state == LookingForSecondMatch)
{
if (cmp.relativeOrder != 0)
{
// todo: repaint rest of messages
break;
}
}
if (cmp.relativeOrder >= 0)
{
++idx1;
}
if (cmp.relativeOrder <= 0)
{
++idx2;
}
}
//
return(0, null);
}