using System;
using System.Windows.Forms;
using System.Drawing;
using System.Diagnostics;
using System.Globalization;
using System.Runtime.Serialization;
namespace DrawTools
{
/// <summary>
/// Rectangle graphic object
/// </summary>
public class DrawRectangle : DrawTools.DrawObject
{
private Rectangle rectangle;
private const string entryRectangle = "Rect";
protected Rectangle Rect
{
get
{
return rectangle;
}
set
{
rectangle = value;
}
}
public DrawRectangle()
{
SetRectangle(0, 0, 1,1);
Initialize();
}
public DrawRectangle(int x, int y, int width, int height)
{
rectangle.X = x;
rectangle.Y = y;
rectangle.Width = width;
rectangle.Height = height;
Initialize();
}
/// <summary>
/// Draw rectangle
/// </summary>
/// <param name="g"></param>
public override void Draw(Graphics g)
{
Pen pen = new Pen(Color, PenWidth);
//draw square when press Shift key
if ((Control.ModifierKeys & Keys.Shift) != 0)
{
rectangle.Width = rectangle.Height;
}
g.DrawRectangle(pen, DrawRectangle.GetNormalizedRectangle(Rect));
pen.Dispose();
}
protected void SetRectangle(int x, int y, int width, int height)
{
rectangle.X = x;
rectangle.Y = y;
rectangle.Width = width;
rectangle.Height = height;
}
/// <summary>
/// Get number of handles
/// </summary>
public override int HandleCount
{
get
{
return 8;
}
}
/// <summary>
/// Get handle point by 1-based number
/// </summary>
/// <param name="handleNumber"></param>
/// <returns></returns>
public override Point GetHandle(int handleNumber)
{
int x, y, xCenter, yCenter;
xCenter = rectangle.X + rectangle.Width/2;
yCenter = rectangle.Y + rectangle.Height/2;
x = rectangle.X;
y = rectangle.Y;
switch ( handleNumber )
{
case 1:
x = rectangle.X;
y = rectangle.Y;
break;
case 2:
x = xCenter;
y = rectangle.Y;
break;
case 3:
x = rectangle.Right;
y = rectangle.Y;
break;
case 4:
x = rectangle.Right;
y = yCenter;
break;
case 5:
x = rectangle.Right;
y = rectangle.Bottom;
break;
case 6:
x = xCenter;
y = rectangle.Bottom;
break;
case 7:
x = rectangle.X;
y = rectangle.Bottom;
break;
case 8:
x = rectangle.X;
y = yCenter;
break;
}
return new Point(x, y);
}
/// <summary>
/// Hit test.
/// Return value: -1 - no hit
/// 0 - hit anywhere
/// > 1 - handle number
/// </summary>
/// <param name="point"></param>
/// <returns></returns>
public override int HitTest(Point point)
{
if ( Selected )
{
for ( int i = 1; i <= HandleCount; i++ )
{
if ( GetHandleRectangle(i).Contains(point) )
return i;
}
}
if ( PointInObject(point) )
return 0;
return -1;
}
protected override bool PointInObject(Point point)
{
return rectangle.Contains(point);
}
/// <summary>
/// Get cursor for the handle
/// </summary>
/// <param name="handleNumber"></param>
/// <returns></returns>
public override Cursor GetHandleCursor(int handleNumber)
{
switch ( handleNumber )
{
case 1:
return Cursors.SizeNWSE;
case 2:
return Cursors.SizeNS;
case 3:
return Cursors.SizeNESW;
case 4:
return Cursors.SizeWE;
case 5:
return Cursors.SizeNWSE;
case 6:
return Cursors.SizeNS;
case 7:
return Cursors.SizeNESW;
case 8:
return Cursors.SizeWE;
default:
return Cursors.Default;
}
}
/// <summary>
/// Move handle to new point (resizing)
/// </summary>
/// <param name="point"></param>
/// <param name="handleNumber"></param>
public override void MoveHandleTo(Point point, int handleNumber)
{
int left = Rect.Left;
int top = Rect.Top;
int right = Rect.Right;
int bottom = Rect.Bottom;
switch ( handleNumber )
{
case 1:
left = point.X;
top = point.Y;
break;
case 2:
top = point.Y;
break;
case 3:
right = point.X;
top = point.Y;
break;
case 4:
right = point.X;
break;
case 5:
right = point.X;
bottom = point.Y;
break;
case 6:
bottom = point.Y;
break;
case 7:
left = point.X;
bottom = point.Y;
break;
case 8:
left = point.X;
break;
}
SetRectangle(left, top, right - left, bottom - top);
}
public override bool IntersectsWith(Rectangle rectangle)
{
return Rect.IntersectsWith(rectangle);
}
/// <summary>
/// Move object
/// </summary>
/// <param name="deltaX"></param>
/// <param name="deltaY"></param>
public override void Move(int deltaX, int deltaY)
{
rectangle.X += deltaX;
rectangle.Y += deltaY;
}
public override void Dump()
{
base.Dump ();
Trace.WriteLine("rectangle.X = " + rectangle.X.ToString(CultureInfo.InvariantCulture));
Trace.WriteLine("rectangle.Y = " + rectangle.Y.ToString(CultureInfo.InvariantCulture));
Trace.WriteLine("rectangle.Width = " + rectangle.Width.ToString(CultureInfo.InvariantCulture));
Trace.WriteLine("rectangle.Height = " + rectangle.Height.ToString(CultureInfo.InvariantCulture));
}
/// <summary>
/// Normalize rectangle
/// </summary>
public override void Normalize()
{
rectangle = DrawRectangle.GetNormalizedRectangle(rectangle);
}
/// <summary>
/// Save objevt to serialization stream
/// </summary>
/// <param name="info"></param>
/// <param name="orderNumber"></param>
public override void SaveToStream(System.Runtime.Serialization.SerializationInfo info, int orderNumber)
{
info.AddValue(
String.Format(CultureInfo.InvariantCulture,
"{0}{1}",
entryRectangle, orderNumber),
rectangle);
base.SaveToStream (info, orderNumber);
}
/// <summary>
/// LOad object from serialization stream
/// </summary>
/// <param name="info"></param>
/// <param name="orderNumber"></param>
public override void LoadFromStream(SerializationInfo info, int orderNumber)
{
rectangle = (Rectangle)info.GetValue(
String.Format(CultureInfo.InvariantCulture,
"{0}{1}",
entryRectangle, orderNumber),
typeof(Rectangle));
base.LoadFromStream (info, orderNumber);
}
#region Helper Functions
public static Rectangle GetNormalizedRectangle(int x1, int y1, int x2, int y2)
{
if ( x2 < x1 )
{
int tmp = x2;
x2 = x1;
x1 = tmp;
}
if ( y2 < y1 )
{
int tmp = y2;
y2 = y1;
y1 = tmp;
}
return new Rectangle(x1, y1, x2 - x1, y2 - y1);
}
public static Rectangle GetNormalizedRectangle(Point p1, Point p2)
{
return GetNormalizedRectangle(p1.X, p1.Y, p2.X, p2.Y);
}
public static Rectangle GetNormalizedRectangle(Rectangle r)
{
return GetNormalizedRectangle(r.X, r.Y, r.X + r.Width, r.Y + r.Height);
}
#endregion
}
}