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Improved WidgetList measure.

This commit is contained in:
and3md 2017-08-19 19:15:27 +02:00
parent a0563db345
commit 1b8f87c214
1 changed files with 28 additions and 1 deletions
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29
src/dlangui/widgets/lists.d
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@ -945,7 +945,34 @@ class ListWidget : WidgetGroup, OnScrollHandler, OnAdapterChangeHandler {
/// sets minimum size for the list, override to change
Point minimumVisibleContentSize() {
return Point(100, 100);
if (_orientation == Orientation.Vertical)
return Point(measureMinChildrenSize().x, 100);
else
return Point(100, measureMinChildrenSize().y);
}
protected Point measureMinChildrenSize() {
// measure children
Point sz;
for (int i = 0; i < itemCount; i++) {
Widget w = itemWidget(i);
if (w is null || w.visibility == Visibility.Gone)
continue;
w.measure(SIZE_UNSPECIFIED, SIZE_UNSPECIFIED);
if (_orientation == Orientation.Vertical) {
// Vertical
if (sz.x < w.measuredWidth)
sz.x = w.measuredWidth;
sz.y += w.measuredHeight;
} else {
// Horizontal
if (sz.y < w.measuredHeight)
sz.y = w.measuredHeight;
sz.x += w.measuredWidth;
}
}
return sz;
}
/// Measure widget according to desired width and height constraints. (Step 1 of two phase layout).