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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;
using QuickRoute.BusinessEntities;
using System.Windows.Forms.Design;
using System.Drawing.Design;
using QuickRoute.PropertyControls;
namespace QuickRoute.Controls
{
public partial class GradientViewer : UserControl
{
private IWindowsFormsEditorService editorService = null;
private Gradient gradient;
// This constructor takes a Gradient value from the
// design-time environment, which will be used to display
// the initial state.
public GradientViewer(Gradient gradient, IWindowsFormsEditorService editorService)
{
// This call is required by the designer.
InitializeComponent();
// Cache the light shape value provided by the
// design-time environment.
this.gradient = gradient;
// Cache the reference to the editor service.
this.editorService = editorService;
}
// Gradient is the property for which this control provides
// a custom user interface in the Properties window.
[Category("Gradient")]
[Browsable(true)]
[EditorAttribute(typeof(GradientEditor), typeof(UITypeEditor))]
public Gradient Gradient
{
get
{
return this.gradient;
}
set
{
this.gradient = value;
}
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
gradient.Draw(this.CreateGraphics(), this.Bounds, 0, 1, Gradient.Direction.Horizontal);
}
}
internal class GradientEditor : UITypeEditor
{
IWindowsFormsEditorService editorService;
public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context)
{
return UITypeEditorEditStyle.DropDown;
}
public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value)
{
if (provider != null)
{
editorService =
provider.GetService(
typeof(IWindowsFormsEditorService))
as IWindowsFormsEditorService;
}
if (editorService != null)
{
GradientEditorControl editorControl = new GradientEditorControl((Gradient)value, editorService);
editorService.DropDownControl(editorControl);
}
return value;
}
// This method indicates to the design environment that
// the type editor will paint additional content in the
// LightShape entry in the PropertyGrid.
public override bool GetPaintValueSupported(ITypeDescriptorContext context)
{
return true;
}
// This method paints a graphical representation of the
// selected value of the LightShpae property.
public override void PaintValue(PaintValueEventArgs e)
{
Gradient gradient = (Gradient)e.Value;
gradient.Draw(e.Graphics, e.Bounds, 0, 1, Gradient.Direction.Horizontal);
}
}
}
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