//--------------------------------------------------------------
#region Methods
//--------------------------------------------------------------
/// <summary>
/// When overridden in a derived class, is invoked whenever application code or internal
/// processes call <see cref="FrameworkElement.ApplyTemplate"/>.
/// </summary>
public override void OnApplyTemplate()
{
if (_slider != null)
{
_slider.ValueChanged -= OnSliderChanged;
_slider = null;
}
if (_int32ValueControl != null)
{
_int32ValueControl.ValueChanged -= OnInt32ValueChanged;
_int32ValueControl = null;
}
if (_doubleValueControl != null)
{
_doubleValueControl.ValueChanged -= OnDoubleValueChanged;
_doubleValueControl = null;
}
base.OnApplyTemplate();
_slider = GetTemplateChild("PART_Slider") as ColorSlider1D;
if (_slider != null)
{
_slider.ValueChanged += OnSliderChanged;
}
_int32ValueControl = GetTemplateChild("PART_Int32Value") as NumericUpDown;
if (_int32ValueControl != null)
{
_int32ValueControl.ValueChanged += OnInt32ValueChanged;
}
_doubleValueControl = GetTemplateChild("PART_DoubleValue") as NumericUpDown;
if (_doubleValueControl != null)
{
_doubleValueControl.ValueChanged += OnDoubleValueChanged;
}
}
/// <summary>
/// When overridden in a derived class, is invoked whenever application code or internal
/// processes call <see cref="FrameworkElement.ApplyTemplate"/>.
/// </summary>
public override void OnApplyTemplate()
{
// Cleanup
if (_eyeDropperButton != null)
{
_eyeDropperButton.Click += OnEyeDropperButtonClicked;
_eyeDropperButton = null;
}
_oldColorNoAlphaShape = null;
_oldColorShape = null;
_newColorNoAlphaShape = null;
_newColorShape = null;
_hexValueTextBox = null;
_slider1D = null;
_slider2D = null;
if (_buttonH != null)
{
_buttonH.Checked -= OnRadioButtonChecked;
_buttonH = null;
}
if (_buttonS != null)
{
_buttonS.Checked -= OnRadioButtonChecked;
_buttonS = null;
}
if (_buttonV != null)
{
_buttonV.Checked -= OnRadioButtonChecked;
_buttonV = null;
}
if (_buttonR != null)
{
_buttonR.Checked -= OnRadioButtonChecked;
_buttonR = null;
}
if (_buttonG != null)
{
_buttonG.Checked -= OnRadioButtonChecked;
_buttonG = null;
}
if (_buttonB != null)
{
_buttonB.Checked -= OnRadioButtonChecked;
_buttonB = null;
}
if (_colorSpaceSelector != null)
{
_colorSpaceSelector.SelectionChanged -= OnColorSpaceSelectionChanged;
_colorSpaceSelector = null;
}
base.OnApplyTemplate();
// Get TemplateParts.
// Store color component enums in tags of color component controls.
// If a template part is missing, create an empty dummy element to avoid many NullReference checks.
// Where necessary, add an event handler.
_colorHControl = GetTemplateChild("PART_H") as ColorComponentControl ?? new ColorComponentControl();
_colorHControl.Tag = ColorComponents.Hue;
_colorSControl = GetTemplateChild("PART_S") as ColorComponentControl ?? new ColorComponentControl();
_colorSControl.Tag = ColorComponents.Saturation;
_colorVControl = GetTemplateChild("PART_V") as ColorComponentControl ?? new ColorComponentControl();
_colorVControl.Tag = ColorComponents.Value;
_colorRControl = GetTemplateChild("PART_R") as ColorComponentControl ?? new ColorComponentControl();
_colorRControl.DisplayValueConverter = _colorSpaceConverter;
_colorRControl.Tag = ColorComponents.Red;
_colorGControl = GetTemplateChild("PART_G") as ColorComponentControl ?? new ColorComponentControl();
_colorGControl.DisplayValueConverter = _colorSpaceConverter;
_colorGControl.Tag = ColorComponents.Green;
_colorBControl = GetTemplateChild("PART_B") as ColorComponentControl ?? new ColorComponentControl();
_colorBControl.DisplayValueConverter = _colorSpaceConverter;
_colorBControl.Tag = ColorComponents.Blue;
_colorAControl = GetTemplateChild("PART_A") as ColorComponentControl ?? new ColorComponentControl();
_colorAControl.Tag = ColorComponents.Alpha;
_eyeDropperButton = GetTemplateChild("PART_EyeDropperButton") as Button;
if (_eyeDropperButton != null)
_eyeDropperButton.Click += OnEyeDropperButtonClicked;
_oldColorNoAlphaShape = GetTemplateChild("PART_OldColorNoAlpha") as Shape ?? new Rectangle();
_oldColorShape = GetTemplateChild("PART_OldColor") as Shape ?? new Rectangle();
_newColorNoAlphaShape = GetTemplateChild("PART_NewColorNoAlpha") as Shape ?? new Rectangle();
_newColorShape = GetTemplateChild("PART_NewColor") as Shape ?? new Rectangle();
_hexValueTextBox = GetTemplateChild("PART_HexValue") as TextBox ?? new TextBox();
_hexValueTextBox.Tag = ColorComponents.Red | ColorComponents.Green | ColorComponents.Blue | ColorComponents.Alpha;
_slider1D = GetTemplateChild("PART_Slider1D") as ColorSlider1D ?? new ColorSlider1D();
_slider2D = GetTemplateChild("PART_Slider2D") as ColorSlider2D ?? new ColorSlider2D();
_slider2D.SizeChanged += OnDetailAreaSizeChanged;
_buttonH = GetTemplateChild("PART_ButtonH") as RadioButton ?? new RadioButton();
_buttonH.Checked += OnRadioButtonChecked;
_buttonS = GetTemplateChild("PART_ButtonS") as RadioButton ?? new RadioButton();
_buttonS.Checked += OnRadioButtonChecked;
_buttonV = GetTemplateChild("PART_ButtonV") as RadioButton ?? new RadioButton();
_buttonV.Checked += OnRadioButtonChecked;
_buttonR = GetTemplateChild("PART_ButtonR") as RadioButton ?? new RadioButton();
_buttonR.Checked += OnRadioButtonChecked;
_buttonG = GetTemplateChild("PART_ButtonG") as RadioButton ?? new RadioButton();
_buttonG.Checked += OnRadioButtonChecked;
_buttonB = GetTemplateChild("PART_ButtonB") as RadioButton ?? new RadioButton();
_buttonB.Checked += OnRadioButtonChecked;
_colorSpaceSelector = GetTemplateChild("PART_ColorSpace") as Selector;
if (_colorSpaceSelector != null)
{
_colorSpaceSelector.SelectedIndex = (int)ColorSpace;
_colorSpaceSelector.SelectionChanged += OnColorSpaceSelectionChanged;
}
OnSelectedComponentChanged(this, new DependencyPropertyChangedEventArgs());
}
//--------------------------------------------------------------
/// <summary>
/// When overridden in a derived class, is invoked whenever application code or internal
/// processes call <see cref="FrameworkElement.ApplyTemplate"/>.
/// </summary>
public override void OnApplyTemplate()
{
if (_slider != null)
{
_slider.ValueChanged -= OnSliderChanged;
_slider = null;
}
if (_int32ValueControl != null)
{
_int32ValueControl.ValueChanged -= OnInt32ValueChanged;
_int32ValueControl = null;
}
if (_doubleValueControl != null)
{
_doubleValueControl.ValueChanged -= OnDoubleValueChanged;
_doubleValueControl = null;
}
base.OnApplyTemplate();
_slider = GetTemplateChild("PART_Slider") as ColorSlider1D;
if (_slider != null)
_slider.ValueChanged += OnSliderChanged;
_int32ValueControl = GetTemplateChild("PART_Int32Value") as NumericUpDown;
if (_int32ValueControl != null)
_int32ValueControl.ValueChanged += OnInt32ValueChanged;
_doubleValueControl = GetTemplateChild("PART_DoubleValue") as NumericUpDown;
if (_doubleValueControl != null)
_doubleValueControl.ValueChanged += OnDoubleValueChanged;
}