using System;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Design;
using System.Windows.Forms;
using System.Windows.Forms.Design;
using System.Drawing.Drawing2D;
namespace ShapeControl
{
internal class ShapeTypeEditorControl : System.Windows.Forms.UserControl
{
// Stores the shape
public ShapeType shape;
// Specification for the UI
private int _numshape, //number of shapes
_numrow, //number of rows
_numcol, //number of columns
_width=20, //width of each shape
_height=20; //height of each shape
public ShapeTypeEditorControl(ShapeType initial_shape)
{
this.shape = initial_shape;
//Find the number of shapes in the enumeration
int numshape=Enum.GetValues(typeof(ShapeType)).GetLength(0);
//Find the number of rows and colums to accomodate the shapes
int numcol=0,numrow=0;
numrow=(int)(Math.Sqrt(numshape));
numcol=numshape/numrow;
if (numshape%numcol>0) numcol++;
//Record the specifications
_numshape=numshape;
_numrow=numrow;
_numcol=numcol;
this.Width =_numcol*_width +(_numcol-1)*6 + 2*4;
this.Height =_numrow*_height+(_numrow-1)*6 +2*4;
}
protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
{
Bitmap bm=new Bitmap(this.Width,this.Height,e.Graphics);
Graphics g=Graphics.FromImage(bm);
g.FillRectangle(Brushes.LightGray,new Rectangle(0,0,bm.Width,bm.Height));
e.Graphics.FillRectangle(Brushes.LightGray,new Rectangle(0,0,this.Width,this.Height));
int x=4,y=4;
int n=0;
foreach (ShapeType shape in Enum.GetValues(typeof(ShapeType)))
{
GraphicsPath path=new GraphicsPath();
ShapeControl.updateOutline(ref path,shape,_width,_height);
g.FillRectangle(Brushes.LightGray,0,0,bm.Width,bm.Height);
g.FillPath(Brushes.Yellow,path);
g.DrawPath(Pens.Red,path);
e.Graphics.DrawImage(bm,x,y,new Rectangle(new Point(0,0),new Size(_width+1,_height+1)),GraphicsUnit.Pixel);
if (this.shape.Equals(shape))
{
e.Graphics.DrawRectangle(Pens.Red,new Rectangle(new Point(x-2,y-2),new Size(_width+4,_height+4)));
}
n++;
x=(n %_numcol) * (_width ); x=x+(n%_numcol)*6+4;
y=(n /_numcol)*(_height); y=y+(n/_numcol)*6+4;
}
}
private void InitializeComponent()
{
//
// ShapeTypeEditorControl
//
this.BackColor = System.Drawing.Color.LightGray;
this.Name = "ShapeTypeEditorControl";
}
protected override void OnMouseDown(System.Windows.Forms.MouseEventArgs e)
{
if (e.Button.Equals(MouseButtons.Left ))
{
int x,y;
int n;
x=e.X ;y=e.Y;
n=(y/(this.Height /_numrow ))*_numcol + ((x /(this.Width/_numcol))%_numcol);
int count=0;
foreach (ShapeType shape in Enum.GetValues(typeof(ShapeType)))
{
if (count==n)
{
this.shape =shape;
//close the editor immediately
SendKeys.Send("{ENTER}");
}
count++;
}
}
}
}
public class ShapeTypeEditor : System.Drawing.Design.UITypeEditor
{
public ShapeTypeEditor()
{
}
// Indicates whether the UITypeEditor provides a form-based (modal) dialog,
// drop down dialog, or no UI outside of the properties window.
[System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name="FullTrust")]
public override System.Drawing.Design.UITypeEditorEditStyle GetEditStyle(System.ComponentModel.ITypeDescriptorContext context)
{
return UITypeEditorEditStyle.DropDown;
}
// Displays the UI for value selection.
[System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name="FullTrust")]
public override object EditValue(System.ComponentModel.ITypeDescriptorContext context, System.IServiceProvider provider, object value)
{
// Return the value if the value is not of type ShapeType
if( value.GetType() != typeof(ShapeType))
return value;
// Uses the IWindowsFormsEditorService to display a
// drop-down UI in the Properties window.
IWindowsFormsEditorService edSvc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService));
if( edSvc != null )
{
// Display an Shape Type Editor Control and retrieve the value.
ShapeTypeEditorControl editor = new ShapeTypeEditorControl((ShapeType)value);
edSvc.DropDownControl( editor );
// Return the value in the appropraite data format.
if( value.GetType() == typeof(ShapeType) )
return editor.shape;
}
return value;
}
// Draws a representation of the property's value.
[System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name="FullTrust")]
public override void PaintValue(System.Drawing.Design.PaintValueEventArgs e)
{
Bitmap bm=new Bitmap(e.Bounds.Width+4,e.Bounds.Height+4,e.Graphics);
Graphics g=Graphics.FromImage(bm);
ShapeType shape=(ShapeType)e.Value;
GraphicsPath path=new GraphicsPath();
ShapeControl.updateOutline(ref path,shape,e.Bounds.Width-5,e.Bounds.Height-5);
g.FillPath(Brushes.Yellow,path);
g.DrawPath(Pens.Red,path);
e.Graphics.DrawImage(bm,3,3,new Rectangle(new Point(0,0),new Size(e.Bounds.Width,e.Bounds.Height)),GraphicsUnit.Pixel);
}
// Indicates whether the UITypeEditor supports painting a
// representation of a property's value.
[System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name="FullTrust")]
public override bool GetPaintValueSupported(System.ComponentModel.ITypeDescriptorContext context)
{
return true;
}
}
}
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