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#if __MOBILE__
using UIKit;
using Xamarin.Forms.Internals;
namespace Xamarin.Forms.Platform.iOS
#else
using Xamarin.Forms.Internals;
namespace Xamarin.Forms.Platform.MacOS
#endif
{
internal class ResourcesProvider : ISystemResourcesProvider
{
ResourceDictionary _dictionary;
public ResourcesProvider()
{
#if __MOBILE__
UIApplication.Notifications.ObserveContentSizeCategoryChanged((sender, args) => UpdateStyles());
#endif
}
public IResourceDictionary GetSystemResources()
{
_dictionary = new ResourceDictionary();
UpdateStyles();
return _dictionary;
}
#if __MOBILE__
Style GenerateListItemDetailTextStyle()
{
var font = new UITableViewCell(UITableViewCellStyle.Subtitle, "Foobar").DetailTextLabel.Font;
return GenerateStyle(font);
}
Style GenerateListItemTextStyle()
{
var font = new UITableViewCell(UITableViewCellStyle.Subtitle, "Foobar").TextLabel.Font;
return GenerateStyle(font);
}
Style GenerateStyle(UIFont font)
{
var result = new Style(typeof(Label));
result.Setters.Add(new Setter { Property = Label.FontSizeProperty, Value = (double)font.PointSize });
result.Setters.Add(new Setter { Property = Label.FontFamilyProperty, Value = font.Name });
return result;
}
void UpdateStyles()
{
_dictionary[Device.Styles.TitleStyleKey] = GenerateStyle(UIFont.PreferredHeadline);
_dictionary[Device.Styles.SubtitleStyleKey] = GenerateStyle(UIFont.PreferredSubheadline);
_dictionary[Device.Styles.BodyStyleKey] = GenerateStyle(UIFont.PreferredBody);
_dictionary[Device.Styles.CaptionStyleKey] = GenerateStyle(UIFont.PreferredCaption1);
_dictionary[Device.Styles.ListItemTextStyleKey] = GenerateListItemTextStyle();
_dictionary[Device.Styles.ListItemDetailTextStyleKey] = GenerateListItemDetailTextStyle();
}
#else
void UpdateStyles()
{
}
#endif
}
}
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