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idListWindow: Scroll to selected item

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from listName_sel_0

that way when setting that state-int and calling StateChanged(),
the list is scrolled so the selected item is visible
This commit is contained in:
Daniel Gibson 2021-06-25 04:51:30 +02:00
parent 10dea591a8
commit 8d8f345c25
1 changed files with 21 additions and 11 deletions
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32
neo/ui/ListWindow.cpp
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@ -600,23 +600,33 @@ void idListWindow::UpdateList() {
}
float vert = GetMaxCharHeight();
int fit = textRect.h / vert;
int selection = gui->State().GetInt( va( "%s_sel_0", listName.c_str() ) );
if ( listItems.Num() < fit ) {
scroller->SetRange(0.0f, 0.0f, 1.0f);
top = 0;
scroller->SetValue(0.0f);
} else {
scroller->SetRange(0.0f, (listItems.Num() - fit) + 1.0f, 1.0f);
// DG: scroll to selected item
float value = scroller->GetValue();
if ( value < 0.0f ) {
value = 0.0f;
top = 0;
} else if ( value > listItems.Num() - 1 ) {
value = listItems.Num() - 1;
}
float maxVisibleVal = Min(value + fit, scroller->GetHigh());
if ( selection >= 0 && (selection < value || selection > maxVisibleVal) ) {
// if selected entry is not currently visible, center it (if possible)
value = Max(0.0f, selection - 0.5f * fit);
}
scroller->SetValue(value);
top = value;
}
SetCurrentSel( gui->State().GetInt( va( "%s_sel_0", listName.c_str() ) ) );
float value = scroller->GetValue();
if ( value > listItems.Num() - 1 ) {
value = listItems.Num() - 1;
}
if ( value < 0.0f ) {
value = 0.0f;
}
scroller->SetValue(value);
top = value;
SetCurrentSel( selection );
typedTime = 0;
clickTime = 0;