public static void UpdateTextColor(IMaterialTextField textField, IMaterialEntryRenderer element)
{
var uIColor = MaterialColors.GetEntryTextColor(element.TextColor);
textField.ContainerScheme.ColorScheme.OnSurfaceColor = uIColor;
textField.ContainerScheme.ColorScheme.PrimaryColor = uIColor;
}
public static void ApplyTheme(IMaterialTextField textField, IMaterialEntryRenderer element)
{
if (element == null)
{
return;
}
if (textField.ActiveTextInputController == null)
{
return;
}
textField.ContainerScheme.ColorScheme = (SemanticColorScheme)CreateColorScheme();
ApplyContainerTheme(textField);
var textColor = MaterialColors.GetEntryTextColor(element.TextColor);
var placeHolderColors = MaterialColors.GetPlaceHolderColor(element.PlaceholderColor, element.TextColor);
var underlineColors = MaterialColors.GetUnderlineColor(element.PlaceholderColor);
textField.TextInput.TextColor = textColor;
textField.ActiveTextInputController.InlinePlaceholderColor = placeHolderColors.InlineColor;
textField.ActiveTextInputController.FloatingPlaceholderNormalColor = placeHolderColors.InlineColor;
textField.ActiveTextInputController.FloatingPlaceholderActiveColor = placeHolderColors.FloatingColor;
// BackgroundColor
textField.ActiveTextInputController.BorderFillColor = MaterialColors.CreateEntryFilledInputBackgroundColor(element.BackgroundColor, element.TextColor);
textField.ActiveTextInputController.ActiveColor = underlineColors.FocusedColor;
textField.ActiveTextInputController.NormalColor = underlineColors.UnFocusedColor;
}
internal void UpdateTextColor(IMaterialEntryRenderer element)
{
var uIColor = MaterialColors.GetEntryTextColor(element.TextColor);
_colorScheme.OnSurfaceColor = uIColor;
_colorScheme.PrimaryColor = uIColor;
}
static Color AdjustTextColor(IMaterialEntryRenderer element)
{
if (Forms.IsiOS14OrNewer)
{
// This is a workaround for an iOS/Material bug; https://github.com/xamarin/Microsoft.Maui.Controls/issues/12246
// If we are on iOS 14, and we have multiple material text entry fields of the same color,
// and any of them are password fields, setting them to the same TextColor value will cause the application
// to hang when a password field loses focus.
// So to work around this, we make an imperceptible adjustment to the alpha value of the color each time
// we set it; that way, none of the text entry fields have _exactly_ the same color and we avoid the bug
// Obviously this will start to become noticeable after the first 20 million or so text entry fields are displayed.
// We apologize for the inconvenience.
var elementTextColor = element.TextColor;
AlphaAdjustment += 0.0000001;
var adjustedAlpha = elementTextColor.IsDefault ? 1 - AlphaAdjustment : elementTextColor.A - AlphaAdjustment;
if (adjustedAlpha < 0)
{
// Below an alpha of 0.01 stuff on iOS doesn't show up in hit tests anyway, so it seems unlikely
// that the entry will get focus and cause the issue.
adjustedAlpha = 0;
}
return(new Color(elementTextColor.R, elementTextColor.G, elementTextColor.B, adjustedAlpha));
}
return(element.TextColor);
}
internal void ApplyTheme(IMaterialEntryRenderer element)
{
if (element == null)
{
return;
}
if (_activeTextinputController == null)
{
return;
}
FilledTextFieldColorThemer.ApplySemanticColorScheme(_colorScheme, (MTextInputControllerFilled)_activeTextinputController);
var textColor = MaterialColors.GetEntryTextColor(element.TextColor);
var placeHolderColors = MaterialColors.GetPlaceHolderColor(element.PlaceholderColor, element.TextColor);
var underlineColors = MaterialColors.GetUnderlineColor(element.TextColor);
TextColor = textColor;
_activeTextinputController.InlinePlaceholderColor = placeHolderColors.InlineColor;
_activeTextinputController.FloatingPlaceholderNormalColor = placeHolderColors.InlineColor;
_activeTextinputController.FloatingPlaceholderActiveColor = placeHolderColors.FloatingColor;
// BackgroundColor
_activeTextinputController.BorderFillColor = MaterialColors.CreateEntryFilledInputBackgroundColor(element.BackgroundColor, element.TextColor);
_activeTextinputController.ActiveColor = underlineColors.FocusedColor;
_activeTextinputController.NormalColor = underlineColors.UnFocusedColor;
}
public static void Init(IMaterialEntryRenderer element, IMaterialTextField textField, IFontElement fontElement)
{
textField.TextInput.ClearButtonMode = UITextFieldViewMode.Never;
textField.ActiveTextInputController = new MTextInputControllerFilled(textField.TextInput);
textField.TextInput.TextInsetsMode = TextInputTextInsetsMode.IfContent;
textField.TypographyScheme = CreateTypographyScheme();
textField.ColorScheme = (SemanticColorScheme)CreateColorScheme();
ApplyTypographyScheme(textField, fontElement);
ApplyTheme(textField, element);
}
public MaterialTextField(IMaterialEntryRenderer element, IFontElement fontElement)
{
VisualElement.VerifyVisualFlagEnabled();
ClearButtonMode = UITextFieldViewMode.Never;
_activeTextinputController = new MTextInputControllerFilled(this);
TextInsetsMode = TextInputTextInsetsMode.IfContent;
_typographyScheme = CreateTypographyScheme();
_colorScheme = (SemanticColorScheme)CreateColorScheme();
ApplyTypographyScheme(fontElement);
ApplyTheme(element);
}
public static void ApplyTheme(IMaterialTextField textField, IMaterialEntryRenderer element)
{
if (element == null)
{
return;
}
if (textField.ActiveTextInputController == null)
{
return;
}
textField.ContainerScheme.ColorScheme = (SemanticColorScheme)CreateColorScheme();
ApplyContainerTheme(textField);
var adjustedTextColor = AdjustTextColor(element);
var textColor = MaterialColors.GetEntryTextColor(adjustedTextColor);
var placeHolderColors = MaterialColors.GetPlaceHolderColor(element.PlaceholderColor, adjustedTextColor);
var underlineColors = MaterialColors.GetUnderlineColor(element.PlaceholderColor);
textField.TextInput.TextColor = textColor;
var inputController = textField.ActiveTextInputController;
inputController.InlinePlaceholderColor = placeHolderColors.InlineColor;
inputController.FloatingPlaceholderNormalColor = placeHolderColors.InlineColor;
inputController.FloatingPlaceholderActiveColor = placeHolderColors.FloatingColor;
inputController.DisabledColor = placeHolderColors.InlineColor;
var brush = element.Background;
if (Brush.IsNullOrEmpty(brush))
{
// BackgroundColor
textField.ActiveTextInputController.BorderFillColor = MaterialColors.CreateEntryFilledInputBackgroundColor(element.BackgroundColor, adjustedTextColor);
}
else
{
// Background
if (textField is UITextField || textField is MultilineTextField)
{
var backgroundImage = ((UIView)textField).GetBackgroundImage(brush);
textField.BackgroundSize = backgroundImage?.Size;
var color = backgroundImage != null?UIColor.FromPatternImage(backgroundImage) : UIColor.Clear;
textField.ActiveTextInputController.BorderFillColor = color;
}
}
textField.ActiveTextInputController.ActiveColor = underlineColors.FocusedColor;
textField.ActiveTextInputController.NormalColor = underlineColors.UnFocusedColor;
}
public static void ApplyThemeIfNeeded(IMaterialTextField textField, IMaterialEntryRenderer element)
{
var bgBrush = element.Background;
if (Brush.IsNullOrEmpty(bgBrush))
{
return;
}
UIImage backgroundImage = null;
if (textField is UITextField || textField is MultilineTextField)
{
backgroundImage = ((UIView)textField).GetBackgroundImage(bgBrush);
}
if (textField.BackgroundSize != null && textField.BackgroundSize != backgroundImage?.Size)
{
ApplyTheme(textField, element);
}
}
public static void UpdatePlaceholder(IMaterialTextField textField, IMaterialEntryRenderer element)
{
var placeholderText = element.Placeholder ?? String.Empty;
textField.ActiveTextInputController.PlaceholderText = placeholderText;
ApplyTheme(textField, element);
var previous = textField.ActiveTextInputController.FloatingPlaceholderScale;
if (String.IsNullOrWhiteSpace(placeholderText))
{
textField.ActiveTextInputController.FloatingPlaceholderScale = 0;
}
else
{
textField.ActiveTextInputController.FloatingPlaceholderScale = (float)TextInputControllerBase.FloatingPlaceholderScaleDefault;
}
if (previous != textField.ActiveTextInputController.FloatingPlaceholderScale && element is IVisualElementRenderer controller)
{
controller.Element?.InvalidateMeasureInternal(InvalidationTrigger.VerticalOptionsChanged);
}
}
internal void UpdatePlaceholder(IMaterialEntryRenderer element) => MaterialTextManager.UpdatePlaceholder(this, element);
internal void ApplyThemeIfNeeded(IMaterialEntryRenderer element) => MaterialTextManager.ApplyThemeIfNeeded(this, element);
public MaterialTextField(IMaterialEntryRenderer element, IFontElement fontElement)
{
ContainerScheme = new ContainerScheme();
MaterialTextManager.Init(element, this, fontElement);
}
public NoCaretMaterialTextField(IMaterialEntryRenderer element, IFontElement fontElement) : base(element, fontElement)
{
SpellCheckingType = UITextSpellCheckingType.No;
AutocorrectionType = UITextAutocorrectionType.No;
AutocapitalizationType = UITextAutocapitalizationType.None;
}
internal void UpdateTextColor(IMaterialEntryRenderer element) => MaterialTextManager.UpdateTextColor(this, element);
public ReadOnlyMaterialTextField(IMaterialEntryRenderer element, IFontElement fontElement) : base(element, fontElement)
{
string[] actions = { "copy:", "select:", "selectAll:" };
_enableActions = new HashSet <string>(actions);
}
public MaterialMultilineTextField(IMaterialEntryRenderer element, IFontElement fontElement) => MaterialTextManager.Init(element, this, fontElement);