public static bool IsUnityEditorStyleSheet(this StyleSheet styleSheet)
{
if ((UIElementsEditorUtility.IsCommonDarkStyleSheetLoaded() && styleSheet == UIElementsEditorUtility.GetCommonDarkStyleSheet()) ||
(UIElementsEditorUtility.IsCommonLightStyleSheetLoaded() && styleSheet == UIElementsEditorUtility.GetCommonLightStyleSheet()))
{
return(true);
}
return(false);
}
void ApplyCanvasTheme(VisualElement element, BuilderDocument.CanvasTheme theme, ThemeStyleSheet customThemeSheet)
{
if (element == null)
{
return;
}
// Remove any null stylesheet. This may occur if an used theme has been deleted.
// This should be handle by ui toolkit
var i = 0;
if (element.styleSheetList != null)
{
while (i < element.styleSheetList.Count)
{
var sheet = element.styleSheetList[i];
if (sheet == null)
{
element.styleSheetList?.Remove(sheet);
if (element.styleSheetList.Count == 0)
{
element.styleSheetList = null;
break;
}
}
else
{
i++;
}
}
}
// Should remove the previous custom theme stylesheet
if (m_LastCustomTheme)
{
element.styleSheets.Remove(m_LastCustomTheme);
m_LastCustomTheme = null;
}
// We verify whether the styles are loaded beforehand because calling GetCommonXXXStyleSheet() will load them unecessarily in this case
if (UIElementsEditorUtility.IsCommonDarkStyleSheetLoaded())
{
element.styleSheets.Remove(UIElementsEditorUtility.GetCommonDarkStyleSheet());
}
if (UIElementsEditorUtility.IsCommonLightStyleSheetLoaded())
{
element.styleSheets.Remove(UIElementsEditorUtility.GetCommonLightStyleSheet());
}
m_Viewport.canvas.defaultBackgroundElement.style.display = DisplayStyle.Flex;
StyleSheet themeStyleSheet = null;
m_Viewport.canvas.checkerboardBackgroundElement.style.display = DisplayStyle.None;
switch (theme)
{
case BuilderDocument.CanvasTheme.Dark:
themeStyleSheet = UIElementsEditorUtility.GetCommonDarkStyleSheet();
break;
case BuilderDocument.CanvasTheme.Light:
themeStyleSheet = UIElementsEditorUtility.GetCommonLightStyleSheet();
break;
case BuilderDocument.CanvasTheme.Default:
themeStyleSheet = EditorGUIUtility.isProSkin ? UIElementsEditorUtility.GetCommonDarkStyleSheet() : UIElementsEditorUtility.GetCommonLightStyleSheet();
break;
case BuilderDocument.CanvasTheme.Custom:
m_Viewport.canvas.defaultBackgroundElement.style.display = DisplayStyle.None;
m_Viewport.canvas.checkerboardBackgroundElement.style.display = DisplayStyle.Flex;
m_LastCustomTheme = customThemeSheet;
themeStyleSheet = customThemeSheet;
break;
default:
break;
}
if (themeStyleSheet != null)
{
element.styleSheets.Add(themeStyleSheet);
}
element.SetProperty(BuilderConstants.ElementLinkedActiveThemeStyleSheetVEPropertyName, themeStyleSheet);
}