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|
//custom panel
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
namespace WpfButtonTemplateCirculaire
{
public class EllipticalPanel : Panel
{
public static readonly DependencyProperty ItemWidthProperty = DependencyProperty.Register(
"ItemWidth", typeof(double), typeof(EllipticalPanel), new FrameworkPropertyMetadata(0.0,
FrameworkPropertyMetadataOptions.AffectsMeasure | FrameworkPropertyMetadataOptions.AffectsArrange));
public static readonly DependencyProperty ItemHeightProperty = DependencyProperty.Register(
"ItemHeight", typeof(double), typeof(EllipticalPanel), new FrameworkPropertyMetadata(0.0,
FrameworkPropertyMetadataOptions.AffectsMeasure | FrameworkPropertyMetadataOptions.AffectsArrange));
public static readonly DependencyProperty UseFerrisWheelLayoutProperty = DependencyProperty.Register(
"UseFerrisWheelLayout", typeof(bool), typeof(EllipticalPanel), new FrameworkPropertyMetadata(false, FrameworkPropertyMetadataOptions.AffectsArrange));
public bool UseFerrisWheelLayout
{
get { return (bool) GetValue(UseFerrisWheelLayoutProperty); }
set { SetValue(UseFerrisWheelLayoutProperty, value); }
}
public double ItemWidth
{
get { return (double)GetValue(ItemWidthProperty); }
set { SetValue(ItemWidthProperty, value); }
}
public double ItemHeight
{
get { return (double)GetValue(ItemHeightProperty); }
set { SetValue(ItemHeightProperty, value); }
}
protected override Size MeasureOverride(Size constraint)
{
if (constraint.Width == double.PositiveInfinity || constraint.Height == double.PositiveInfinity)
return Size.Empty;
foreach (UIElement child in InternalChildren)
{
child.Measure(new Size(ItemWidth, ItemHeight));
}
return constraint;
}
protected override Size ArrangeOverride(Size finalSize)
{
// Calculate radius
double radiusX = (finalSize.Width - ItemWidth) * 0.5;
double radiusY = (finalSize.Height - ItemHeight) * 0.5;
double count = InternalChildren.Count;
// Sector angle between items
double deltaAngle = 2 * Math.PI / count;
// Center of the ellipse
Point center = new Point(finalSize.Width / 2, finalSize.Height / 2);
for (int i = 0; i < count; i++)
{
UIElement child = InternalChildren[i];
// Calculate position
double angle = i * deltaAngle;
double x = center.X + radiusX * Math.Cos(angle) - ItemWidth / 2;
double y = center.Y + radiusY * Math.Sin(angle) - ItemHeight / 2;
if (UseFerrisWheelLayout)
{
child.RenderTransform = null;
}
else
{
child.RenderTransformOrigin = new Point(0.5, 0.5);
child.RenderTransform = new RotateTransform(angle * 180 / Math.PI);
}
child.Arrange(new Rect(x, y, ItemWidth, ItemHeight));
}
return finalSize;
}
}
}
//custom button
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Controls.Primitives;
using System.Collections.ObjectModel;
using System.Windows;
using System.Windows.Controls;
namespace WpfButtonTemplateCirculaire
{
public class CustomTextButton : Button
{
public CustomTextButton()
{
this.ItemsSource = new ObservableCollection<Char>();
}
public string Text
{
get { return (string)GetValue(TextProperty); }
set { SetValue(TextProperty, value); }
}
// Using a DependencyProperty as the backing store for Text. This enables animation, styling, binding, etc...
public static readonly DependencyProperty TextProperty =
DependencyProperty.Register("Text",
typeof(string), typeof(CustomTextButton),
new UIPropertyMetadata(null,OnTxtChanged));
private static void OnTxtChanged(DependencyObject d, DependencyPropertyChangedEventArgs args)
{
CustomTextButton custBtn= d as CustomTextButton;
string s = args.NewValue as String;
if (! string.IsNullOrEmpty(s))
{
/* conversion en maj...*/
s = s.ToUpper();
/* met à jour ItemsSource...*/
custBtn.ItemsSource = new ObservableCollection<Char>(s.ToCharArray());
}
}
// une prop attache ItemsSource "pretee" par ItemsControl grace a AddOwner
public ObservableCollection<Char> ItemsSource
{
get { return (ObservableCollection<Char>)GetValue(ItemsSourceProperty); }
set { SetValue(ItemsSourceProperty, value); }
}
public static readonly DependencyProperty ItemsSourceProperty =
ItemsControl.ItemsSourceProperty.AddOwner( typeof(CustomTextButton) );
}
} |
texte dans un bouton sans centre
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