private void UpdateChildLocationsAfterSizeChange(SizeInfo newSizeInfo)
{
foreach (UIElement uiElement in Children)
{
if (newSizeInfo.WidthChanged)
{
var relativeX = (double)uiElement.GetValue(HorizontalProportionProperty);
if (!double.IsInfinity(relativeX))
{
var newX = relativeX * newSizeInfo.Size.Width;
SetLeftOfRelativePoint(uiElement, newX);
}
}
if (newSizeInfo.HeightChanged)
{
var relativeY = (double)uiElement.GetValue(VerticalProportionProperty);
if (!double.IsInfinity(relativeY))
{
var newY = relativeY * newSizeInfo.Size.Height;
SetTopOfRelativePoint(uiElement, newY);
}
}
}
}
void OnLoaded(object sender, RoutedEventArgs e) {
if (firstLoad) {
foreach (UIElement child in Children) {
UpdateHorizontalProportions(child);
UpdateVerticalProportions(child);
}
firstLoad = false;
} else {
var newSizeInfo = new SizeInfo(new Size(ActualWidth, ActualHeight)) { WidthChanged = true, HeightChanged = true };
UpdateChildLocationsAfterSizeChange(newSizeInfo);
}
SizeChanged += OnSizeChanged;
}
void OnLoaded(object sender, RoutedEventArgs e)
{
if (firstLoad)
{
foreach (UIElement child in Children)
{
UpdateHorizontalProportions(child);
UpdateVerticalProportions(child);
}
firstLoad = false;
}
else
{
var newSizeInfo = new SizeInfo(new Size(ActualWidth, ActualHeight))
{
WidthChanged = true, HeightChanged = true
};
UpdateChildLocationsAfterSizeChange(newSizeInfo);
}
SizeChanged += OnSizeChanged;
}
private void UpdateChildLocationsAfterSizeChange(SizeInfo newSizeInfo) {
foreach (UIElement uiElement in Children) {
if (newSizeInfo.WidthChanged) {
var relativeX = (double)uiElement.GetValue(HorizontalProportionProperty);
if (!double.IsInfinity(relativeX)) {
var newX = relativeX * newSizeInfo.Size.Width;
SetLeftOfRelativePoint(uiElement, newX);
}
}
if (newSizeInfo.HeightChanged) {
var relativeY = (double)uiElement.GetValue(VerticalProportionProperty);
if (!double.IsInfinity(relativeY)) {
var newY = relativeY * newSizeInfo.Size.Height;
SetTopOfRelativePoint(uiElement, newY);
}
}
}
}