private void SetupNavBar(CGSize size)
{
if (NavigationController != null && titleView != null)
{
var page = Element as Page;
containerView.Frame = new CGRect(0, 0, size.Width, size.Height);
titleView.Layer.BorderWidth = ExtendedNavigationPage.GetTitleBorderWidth(Element);
titleView.Layer.CornerRadius = ExtendedNavigationPage.GetTitleBorderCornerRadius(Element);
titleView.Layer.BorderColor = ExtendedNavigationPage.GetTitleBorderColor(Element)?.ToCGColor() ?? UIColor.Clear.CGColor;
SetupTextFont(titleLabel, ExtendedNavigationPage.GetTitleFont(page), ExtendedNavigationPage.GetTitleColor(page));
SetupBackground();
if (!string.IsNullOrEmpty(ExtendedNavigationPage.GetTitleBackground(Element)))
{
try
{
var image = UIImage.FromBundle(ExtendedNavigationPage.GetTitleBackground(Element));
titleView.Frame = new CGRect(titleView.Frame.X, titleView.Frame.Y, titleView.Frame.Width == 0?Math.Min(size.Width, image.Size.Width): Math.Min(titleView.Frame.Width, image.Size.Width), titleView.Frame.Height == 0 ? Math.Min(size.Height, image.Size.Height) : Math.Min(titleView.Frame.Height, image.Size.Height));
titleView.BackgroundColor = UIColor.FromPatternImage(image);
}
catch (Exception ex)
{
titleView.BackgroundColor = ExtendedNavigationPage.GetTitleFillColor(Element)?.ToUIColor() ?? UIColor.Clear;
}
}
else
{
titleView.BackgroundColor = ExtendedNavigationPage.GetTitleFillColor(Element)?.ToUIColor() ?? UIColor.Clear;
}
ParentViewController.NavigationItem.TitleView = containerView;
ParentViewController.NavigationItem.TitleView.SetNeedsDisplay();
}
}
private void Element_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
var page = sender as Page;
System.Diagnostics.Debug.WriteLine(e.PropertyName);
switch (e.PropertyName)
{
case Page.TitleProperty.PropertyName:
case ExtendedNavigationPage.TitleFontProperty.PropertyName:
case CustomPage.SubtitleProperty.PropertyName:
case ExtendedNavigationPage.SubtitleFontProperty.PropertyName:
SetupTextFont(titleLabel, ExtendedNavigationPage.GetTitleFont(page), ExtendedNavigationPage.GetTitleColor(page));
SetTitlePosition(ExtendedNavigationPage.GetTitlePosition(page), ExtendedNavigationPage.GetTitlePadding(Element), ExtendedNavigationPage.GetTitleMargin(Element), new CGRect(0, 0, Math.Max(subtitleLabel.IntrinsicContentSize.Width, titleLabel.IntrinsicContentSize.Width), (titleLabel.IntrinsicContentSize.Height + subtitleLabel.IntrinsicContentSize.Height + (subtitleLabel.IntrinsicContentSize.Height > 0.0f ? 3.0f : 0.0f))));
break;
case ExtendedNavigationPage.TitleColorProperty.PropertyName:
var titleColor = ExtendedNavigationPage.GetTitleColor(page);
if (titleColor.HasValue)
{
titleLabel.TextColor = titleColor.Value.ToUIColor();
}
break;
case ExtendedNavigationPage.SubtitleColorProperty.PropertyName:
var subtitleColor = ExtendedNavigationPage.GetSubtitleColor(page);
if (subtitleColor.HasValue)
{
subtitleLabel.TextColor = subtitleColor.Value.ToUIColor();
}
break;
case ExtendedNavigationPage.TitlePositionProperty.PropertyName:
case ExtendedNavigationPage.TitlePaddingProperty.PropertyName:
case ExtendedNavigationPage.TitleMarginProperty.PropertyName:
SetTitlePosition(ExtendedNavigationPage.GetTitlePosition(Element), ExtendedNavigationPage.GetTitlePadding(Element), ExtendedNavigationPage.GetTitleMargin(Element), new CGRect(0, 0, Math.Max(subtitleLabel.IntrinsicContentSize.Width, titleLabel.IntrinsicContentSize.Width), (titleLabel.IntrinsicContentSize.Height + subtitleLabel.IntrinsicContentSize.Height + (subtitleLabel.IntrinsicContentSize.Height > 0.0f ? 3.0f : 0.0f))));
break;
case ExtendedNavigationPage.GradientColorsProperty.PropertyName:
case ExtendedNavigationPage.GradientDirectionProperty.PropertyName:
case ExtendedNavigationPage.BarBackgroundProperty.PropertyName:
case ExtendedNavigationPage.BarBackgroundOpacityProperty.PropertyName:
SetupBackground();
break;
case ExtendedNavigationPage.HasShadowProperty.PropertyName:
SetupShadow(ExtendedNavigationPage.GetHasShadow(page));
break;
case ExtendedNavigationPage.TitleBackgroundProperty.PropertyName:
if (!string.IsNullOrEmpty(ExtendedNavigationPage.GetTitleBackground(Element)))
{
titleView.BackgroundColor = UIColor.FromPatternImage(UIImage.FromBundle(ExtendedNavigationPage.GetTitleBackground(Element)));
}
else
{
titleView.BackgroundColor = null;
}
break;
case nameof(ExtendedNavigationPage.TitleBorderWidth):
titleView.Layer.BorderWidth = ExtendedNavigationPage.GetTitleBorderWidth(Element);
break;
case nameof(ExtendedNavigationPage.TitleBorderCornerRadius):
titleView.Layer.CornerRadius = ExtendedNavigationPage.GetTitleBorderCornerRadius(Element);
break;
case nameof(ExtendedNavigationPage.TitleBorderColor):
titleView.Layer.BorderColor = ExtendedNavigationPage.GetTitleBorderColor(Element)?.ToCGColor() ?? UIColor.Clear.CGColor;
break;
case nameof(ExtendedNavigationPage.TitleFillColor):
titleView.BackgroundColor = ExtendedNavigationPage.GetTitleFillColor(Element)?.ToUIColor() ?? UIColor.Clear;
break;
case nameof(CustomPage.FormattedTitle):
if (page is ContentPage cPage)
{
SetupFormattedText(titleLabel, CustomPage.GetFormattedTitle(cPage), cPage.Title);
}
break;
}
}
private void SetTitlePosition(TitleAlignment alignment, Thickness padding, Thickness margin, CGRect vFrame)
{
var marginX = margin.Top;
var marginY = margin.Left;
var marginWidth = margin.Left + margin.Right;
var marginHeight = margin.Top + margin.Bottom;
var paddingWidth = padding.Left + padding.Right;
var paddingHeight = padding.Top + padding.Bottom;
var paddingX = padding.Left;
var paddingY = padding.Top;
if (ExtendedNavigationPage.GetTitleBackground(Element) != null && vFrame.Width == 0 && vFrame.Height == 0)
{
vFrame = titleView.Frame;
}
marginView.Frame = new CGRect(vFrame.X, vFrame.Y, vFrame.Width, vFrame.Height);
double offset = 0;
titleLabel.AutoresizingMask = UIViewAutoresizing.All;
switch (alignment)
{
case TitleAlignment.Start:
marginView.Frame = new CGRect(vFrame.X, marginView.Frame.Y, marginView.Bounds.Width + marginWidth + paddingWidth, marginView.Bounds.Height + marginHeight + paddingHeight);
var startCenter = marginView.Center;
startCenter.Y = marginView.Superview.Center.Y;
marginView.Center = startCenter;
titleLabel.TextAlignment = UITextAlignment.Left;
subtitleLabel.TextAlignment = UITextAlignment.Left;
offset = marginX;
break;
case TitleAlignment.Center:
offset = marginX;
marginView.Frame = new CGRect(marginView.Frame.X, marginView.Frame.Y, marginView.Bounds.Width + marginWidth + paddingWidth, marginView.Bounds.Height + marginHeight + paddingHeight);
marginView.Center = marginView.Superview.Center;
titleLabel.TextAlignment = UITextAlignment.Center;
subtitleLabel.TextAlignment = UITextAlignment.Center;
break;
case TitleAlignment.End:
var endCenter = marginView.Center;
endCenter.Y = marginView.Superview.Center.Y;
marginView.Center = endCenter;
titleLabel.TextAlignment = UITextAlignment.Right;
subtitleLabel.TextAlignment = UITextAlignment.Right;
marginView.Frame = new CGRect(marginView.Superview.Frame.Width - marginView.Frame.Width - offset - marginWidth - paddingWidth, marginView.Frame.Y, marginView.Bounds.Width + marginWidth + paddingWidth, marginView.Bounds.Height + marginHeight + paddingHeight);
offset = marginView.Frame.Width - vFrame.Width - paddingWidth - marginX;
break;
}
titleView.Frame = new CGRect(offset, vFrame.Y + marginY, vFrame.Width + paddingWidth, vFrame.Height + paddingHeight);
var cPage = Element as ContentPage;
var formattedSubtitle = CustomPage.GetFormattedSubtitle(Element);
var subtitle = CustomPage.GetFormattedSubtitle(Element);
if (cPage != null && (!string.IsNullOrEmpty(subtitle) ||
(formattedSubtitle != null && formattedSubtitle.Spans.Count > 0)))
{
titleLabel.Frame = new CGRect(paddingX, paddingY, titleView.Frame.Width, titleLabel.IntrinsicContentSize.Height);
subtitleLabel.Frame = new CGRect(titleLabel.Frame.X, titleLabel.Frame.Y + titleLabel.Frame.Height + 3, titleView.Frame.Width, subtitleLabel.Frame.Height);
}
else
{
titleLabel.Frame = new CGRect(paddingX, paddingY, titleLabel.IntrinsicContentSize.Width, titleLabel.IntrinsicContentSize.Height);
}
}