/// <summary>
/// Applys the theme by modifying App Resources.
/// </summary>
/// <remarks>This method is called heavily by the theme editor.</remarks>
/// <param name="theme">The theme.</param>
public void ApplyTheme(Theme theme)
{
// convert theme to ResourceDictionary
var themeResourceDictionary = theme.ToResourceDictionary();
var mergedDictionaries = Application.Current.Resources.MergedDictionaries;
// need to remove the last theme resource dictionary
if (ActiveTheme != null) {
mergedDictionaries.RemoveAt(mergedDictionaries.Count - 1);
}
Application.Current.Resources.MergedDictionaries.Add(themeResourceDictionary);
ActiveTheme = theme;
}
/// <summary>
/// Initializes the default (fallback) theme, which is used when no theme is loaded.
/// Also if a theme doesn't specify a color, the color from this theme is used.
/// </summary>
public void InitializeDefaultTheme()
{
// load the default theme json from Resources
var path = new Uri("Themes/default.json", UriKind.Relative);
var resource = Application.GetResourceStream(path);
var reader = new StreamReader(resource.Stream);
var json = reader.ReadToEnd();
// parse the json and load into a Theme object
dynamic result = JsonConvert.DeserializeObject(json);
Dictionary<string, string> config = result.ToObject<Dictionary<string, string>>();
DefaultTheme = _themeFromConfig(config);
// insert the resource dictionary to application resources
var mergedDictionaries = Application.Current.Resources.MergedDictionaries;
mergedDictionaries[1].MergedDictionaries[0] = DefaultTheme.ToResourceDictionary();
}
public void TestResourceDictionary()
{
var theme = new Theme();
theme.LoadFromPath(_themePath);
var resourceDictionary = theme.ToResourceDictionary();
// test the resource dictionary for correctness by comparing each color
foreach (var colorKey in _colorKeys) {
var actualColor = ((SolidColorBrush) resourceDictionary[colorKey]).Color;
var expectedColor =
((SolidColorBrush) new BrushConverter().ConvertFromString(_themeDict[colorKey])).Color;
Assert.That(actualColor, Is.EqualTo(expectedColor));
}
}