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WPFDark/Controls/BiaColorBar.xaml.cs
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434
WPFDark/Controls/BiaColorBar.xaml.cs
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using System.Runtime.CompilerServices;
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using System.Windows;
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using System.Windows.Input;
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using System.Windows.Media;
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using WPFDark.Internals;
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namespace WPFDark.Controls
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{
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public class BiaColorBar : FrameworkElement
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{
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#region Value
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public double Value
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{
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get => _Value;
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set
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{
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if (NumberHelper.AreClose(value, _Value) == false)
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SetValue(ValueProperty, value);
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}
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}
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private double _Value;
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public static readonly DependencyProperty ValueProperty =
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DependencyProperty.Register(nameof(Value), typeof(double), typeof(BiaColorBar),
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new FrameworkPropertyMetadata(
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0.0,
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FrameworkPropertyMetadataOptions.AffectsRender |
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FrameworkPropertyMetadataOptions.SubPropertiesDoNotAffectRender,
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(s, e) =>
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{
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var self = (BiaColorBar) s;
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self._Value = (double) e.NewValue;
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}));
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#endregion
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#region Color0
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public ByteColor Color0
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{
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get => _Color0;
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set
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{
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if (value != _Color0)
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SetValue(Color0Property, value);
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}
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}
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private ByteColor _Color0 = ByteColor.Black;
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public static readonly DependencyProperty Color0Property =
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DependencyProperty.Register(nameof(Color0), typeof(ByteColor), typeof(BiaColorBar),
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new FrameworkPropertyMetadata(
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Boxes.ByteColorBlack,
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FrameworkPropertyMetadataOptions.AffectsRender |
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FrameworkPropertyMetadataOptions.SubPropertiesDoNotAffectRender,
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(s, e) =>
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{
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var self = (BiaColorBar) s;
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self._Color0 = (ByteColor) e.NewValue;
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self._isRequestUpdateBackgroundBrush = true;
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}));
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#endregion
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#region Color1
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public ByteColor Color1
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{
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get => _Color1;
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set
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{
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if (value != _Color1)
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SetValue(Color1Property, value);
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}
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}
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private ByteColor _Color1 = ByteColor.White;
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public static readonly DependencyProperty Color1Property =
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DependencyProperty.Register(nameof(Color1), typeof(ByteColor), typeof(BiaColorBar),
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new FrameworkPropertyMetadata(
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Boxes.ByteColorWhite,
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FrameworkPropertyMetadataOptions.AffectsRender |
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FrameworkPropertyMetadataOptions.SubPropertiesDoNotAffectRender,
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(s, e) =>
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{
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var self = (BiaColorBar) s;
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self._Color1 = (ByteColor) e.NewValue;
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self._isRequestUpdateBackgroundBrush = true;
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}));
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#endregion
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#region BorderColor
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public ByteColor BorderColor
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{
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get => _BorderColor;
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set
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{
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if (value != _BorderColor)
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SetValue(BorderColorProperty, value);
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}
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}
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private ByteColor _BorderColor = ByteColor.Red;
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public static readonly DependencyProperty BorderColorProperty =
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DependencyProperty.Register(nameof(BorderColor), typeof(ByteColor), typeof(BiaColorBar),
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new FrameworkPropertyMetadata(
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Boxes.ByteColorRed,
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FrameworkPropertyMetadataOptions.AffectsRender |
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FrameworkPropertyMetadataOptions.SubPropertiesDoNotAffectRender,
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(s, e) =>
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{
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var self = (BiaColorBar) s;
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self._BorderColor = (ByteColor) e.NewValue;
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}));
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#endregion
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#region IsInverseValue
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public bool IsInverseValue
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{
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get => _IsInverseValue;
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set
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{
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if (value != _IsInverseValue)
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SetValue(IsInverseValueProperty, value);
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}
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}
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private bool _IsInverseValue;
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public static readonly DependencyProperty IsInverseValueProperty =
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DependencyProperty.Register(nameof(IsInverseValue), typeof(bool), typeof(BiaColorBar),
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new FrameworkPropertyMetadata(
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false,
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FrameworkPropertyMetadataOptions.AffectsRender |
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FrameworkPropertyMetadataOptions.SubPropertiesDoNotAffectRender,
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(s, e) =>
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{
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var self = (BiaColorBar) s;
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self._IsInverseValue = (bool) e.NewValue;
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}));
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#endregion
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#region IsReadOnly
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public bool IsReadOnly
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{
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get => _IsReadOnly;
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set
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{
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if (value != _IsReadOnly)
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SetValue(IsReadOnlyProperty, value);
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}
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}
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private bool _IsReadOnly;
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public static readonly DependencyProperty IsReadOnlyProperty =
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DependencyProperty.Register(nameof(IsReadOnly), typeof(bool), typeof(BiaColorBar),
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new FrameworkPropertyMetadata(
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false,
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FrameworkPropertyMetadataOptions.AffectsRender |
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FrameworkPropertyMetadataOptions.SubPropertiesDoNotAffectRender,
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(s, e) =>
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{
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var self = (BiaColorBar) s;
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self._IsReadOnly = (bool) e.NewValue;
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}));
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#endregion
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#region StartedContinuousEditingCommand
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public ICommand? StartedContinuousEditingCommand
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{
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get => _StartedContinuousEditingCommand;
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set
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{
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if (value != _StartedContinuousEditingCommand)
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SetValue(StartedContinuousEditingCommandProperty, value);
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}
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}
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private ICommand? _StartedContinuousEditingCommand;
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public static readonly DependencyProperty StartedContinuousEditingCommandProperty =
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DependencyProperty.Register(
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nameof(StartedContinuousEditingCommand),
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typeof(ICommand),
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typeof(BiaColorBar),
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new PropertyMetadata(
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default(ICommand),
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(s, e) =>
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{
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var self = (BiaColorBar) s;
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self._StartedContinuousEditingCommand = (ICommand) e.NewValue;
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}));
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#endregion
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#region EndContinuousEditingCommand
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public ICommand? EndContinuousEditingCommand
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{
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get => _EndContinuousEditingCommand;
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set
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{
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if (value != _EndContinuousEditingCommand)
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SetValue(EndContinuousEditingCommandProperty, value);
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}
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}
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private ICommand? _EndContinuousEditingCommand;
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public static readonly DependencyProperty EndContinuousEditingCommandProperty =
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DependencyProperty.Register(
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nameof(EndContinuousEditingCommand),
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typeof(ICommand),
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typeof(BiaColorBar),
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new PropertyMetadata(
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default(ICommand),
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(s, e) =>
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{
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var self = (BiaColorBar) s;
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self._EndContinuousEditingCommand = (ICommand) e.NewValue;
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}));
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#endregion
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private Brush? _backgroundBrush;
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private bool _isRequestUpdateBackgroundBrush = true;
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// ReSharper disable once PrivateFieldCanBeConvertedToLocalVariable
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private readonly PropertyChangeNotifier _isEnabledChangeNotifier;
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static BiaColorBar()
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{
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DefaultStyleKeyProperty.OverrideMetadata(typeof(BiaColorBar),
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new FrameworkPropertyMetadata(typeof(BiaColorBar)));
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}
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public BiaColorBar()
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{
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RenderOptions.SetEdgeMode(this, EdgeMode.Aliased);
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_isEnabledChangeNotifier = new PropertyChangeNotifier(this, IsEnabledProperty);
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_isEnabledChangeNotifier.ValueChanged += (_, __) =>
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{
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_isRequestUpdateBackgroundBrush = true;
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InvalidateVisual();
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};
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}
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protected override void OnRender(DrawingContext dc)
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{
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if (ActualWidth <= 1 ||
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ActualHeight <= 1)
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return;
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var rounder = new LayoutRounder(this);
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VisualEdgeMode = EdgeMode.Unspecified;
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if (_isRequestUpdateBackgroundBrush)
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{
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_isRequestUpdateBackgroundBrush = false;
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UpdateBackgroundBrush();
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}
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var rect = rounder.RoundRenderRectangle(true);
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dc.DrawRectangle(_backgroundBrush, rounder.GetBorderPen(BorderColor), rect);
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// Cursor
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this.DrawPointCursor(rounder, dc, MakeCursorRenderPos(rounder), IsEnabled, IsReadOnly);
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}
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private ImmutableVec2_double MakeCursorRenderPos(in LayoutRounder rounder)
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{
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var bw = rounder.RoundLayoutValue(FrameworkElementExtensions.BorderWidth);
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var h = rounder.RoundLayoutValue(ActualHeight - bw * 2);
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var y = NumberHelper.Clamp01(Value) * h;
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if (IsInverseValue)
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y = h - y;
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y += bw;
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return new ImmutableVec2_double(rounder.RoundLayoutValue(ActualWidth / 2), rounder.RoundLayoutValue(y));
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}
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private static Brush? _disabledBackgroundBrush;
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private void UpdateBackgroundBrush()
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{
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if (IsEnabled)
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{
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_backgroundBrush = new LinearGradientBrush(Color1.ToColor(), Color0.ToColor(), 90);
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_backgroundBrush.Freeze();
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}
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else
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{
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if (_disabledBackgroundBrush is null)
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_disabledBackgroundBrush = (Brush) ThemeManager.Current.TryFindResource("InactiveBackgroundBrushKey");
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_backgroundBrush = _disabledBackgroundBrush;
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}
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}
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private void UpdateParams(MouseEventArgs e)
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{
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var rounder = new LayoutRounder(this);
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var pos = e.GetPosition(this);
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var s = rounder.RoundLayoutValue(1);
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var y = (pos.Y - s) / (ActualHeight - s * 2);
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y = NumberHelper.Clamp01(y);
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Value = IsInverseValue ? 1 - y : y;
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}
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private bool _isMouseDown;
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private bool _isContinuousEdited;
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private double _ContinuousEditingStartValue;
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protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
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{
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base.OnMouseLeftButtonDown(e);
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if (IsReadOnly)
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return;
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_isMouseDown = true;
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GuiHelper.HideCursor();
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_ContinuousEditingStartValue = Value;
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_isContinuousEdited = true;
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StartedContinuousEditingCommand?.ExecuteIfCan(null);
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UpdateParams(e);
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CaptureMouse();
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this.SetMouseClipping();
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e.Handled = true;
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}
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protected override void OnMouseMove(MouseEventArgs e)
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{
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base.OnMouseMove(e);
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if (IsReadOnly)
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return;
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if (_isMouseDown == false)
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return;
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UpdateParams(e);
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e.Handled = true;
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}
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protected override void OnMouseLeftButtonUp(MouseButtonEventArgs e)
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{
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base.OnMouseLeftButtonUp(e);
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if (IsReadOnly)
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return;
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if (_isMouseDown == false)
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return;
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// マウス位置を補正する
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{
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var rounder = new LayoutRounder(this);
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var cp = MakeCursorRenderPos(rounder);
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var p = PointToScreen(Unsafe.As<ImmutableVec2_double, Point>(ref cp));
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Win32Helper.SetCursorPos((int) p.X, (int) p.Y);
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}
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_isMouseDown = false;
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this.ResetMouseClipping();
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GuiHelper.ShowCursor();
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ReleaseMouseCapture();
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if (_isContinuousEdited)
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{
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if (EndContinuousEditingCommand != null)
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{
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if (EndContinuousEditingCommand.CanExecute(null))
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{
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var changedValue = Value;
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Value = _ContinuousEditingStartValue;
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EndContinuousEditingCommand.Execute(null);
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Value = changedValue;
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}
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}
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_isContinuousEdited = false;
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}
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e.Handled = true;
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}
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protected override void OnMouseLeave(MouseEventArgs e)
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{
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base.OnMouseLeave(e);
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if (_isMouseDown)
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{
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_isMouseDown = false;
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ReleaseMouseCapture();
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GuiHelper.ShowCursor();
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this.ResetMouseClipping();
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}
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e.Handled = true;
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}
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}
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}
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