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| // Copy Right 2004 - feel free to do anything with this code.
//
// this project was created using the methods shown in:
// Creating Bitmap Regions for Forms and Buttons - http://www.thecodeproject.com/csharp/bmprgnform.asp
//
using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
namespace RectTrackerSharp
{
/// <summary>
/// Summary description for RectTracker.
/// </summary>
public class RectTracker : System.Windows.Forms.UserControl
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
//original rect
Rectangle baseRect;
//new rect with bounds
Rectangle ControlRect;
//all small rects
Rectangle[] SmallRect = new Rectangle[8];
//sqare size
Size Sqare = new Size(6,6);
//graphics object
Graphics g;
//the control that is tracked
Control currentControl;
Rectangle currentRectangle;
// To store the location of previous mouse left click in the form
// so that we can use it to calculate the new form location during dragging
private Point prevLeftClick;
// To determine if it is the first time entry for every dragging of the form
private bool isFirst = true;
//defines the color surrounding the tracker
Color MyBackColor = Color.Wheat;
//defines the color of the sqares
Color SqareColor = Color.White;
//defines the line color of the sqares
Color SqareLineColor = Color.Black;
//The Control the tracker is used on
public Control Control
{
get {return currentControl;}
set
{
//currentControl = value;
//Rect = currentControl.Bounds;
}
}
/// <summary>
/// keep track of which border of the box is to be resized.
/// </summary>
enum RESIZE_BORDER
{
RB_NONE = 0,
RB_TOP = 1,
RB_RIGHT = 2,
RB_BOTTOM = 3,
RB_LEFT = 4,
RB_TOPLEFT = 5,
RB_TOPRIGHT = 6,
RB_BOTTOMLEFT = 7,
RB_BOTTOMRIGHT = 8
}
//currently resize mouse location
private RESIZE_BORDER CurrBorder;
/// <summary>
/// The current position of the rectangle in client coordinates (pixels).
/// </summary>
public Rectangle Rect
{
get {return baseRect;}
set
{
int X = Sqare.Width;
int Y = Sqare.Height;
int Height = value.Height;
int Width = value.Width;
baseRect = new Rectangle(X,Y,Width,Height);
SetRectangles();
}
}
/// <summary>
/// Set the Sqares positions
/// </summary>
void SetRectangles()
{
//TopLeft
SmallRect[0] = new Rectangle(new Point(baseRect.X - Sqare.Width,baseRect.Y - Sqare.Height),Sqare);
//TopRight
SmallRect[1] = new Rectangle(new Point(baseRect.X + baseRect.Width,baseRect.Y - Sqare.Height),Sqare);
//BottomLeft
SmallRect[2] = new Rectangle(new Point(baseRect.X - Sqare.Width,baseRect.Y + baseRect.Height),Sqare);
//BottomRight
SmallRect[3] = new Rectangle(new Point(baseRect.X + baseRect.Width,baseRect.Y + baseRect.Height),Sqare);
//TopMiddle
SmallRect[4] = new Rectangle(new Point(baseRect.X + (baseRect.Width/2) - (Sqare.Width/2) ,baseRect.Y - Sqare.Height),Sqare);
//BottomMiddle
SmallRect[5] = new Rectangle(new Point(baseRect.X + (baseRect.Width/2) - (Sqare.Width/2) ,baseRect.Y + baseRect.Height),Sqare);
//LeftMiddle
SmallRect[6] = new Rectangle(new Point(baseRect.X - Sqare.Width,baseRect.Y + (baseRect.Height/2) - (Sqare.Height/2)),Sqare);
//RightMiddle
SmallRect[7] = new Rectangle(new Point(baseRect.X + baseRect.Width,baseRect.Y + (baseRect.Height/2) - (Sqare.Height/2)),Sqare);
//the whole tracker rect
ControlRect = new Rectangle(new Point(0,0),this.Bounds.Size);
}
/// <summary>
/// Draws Sqares
/// </summary>
public void Draw()
{
try
{
//draw sqares
g.FillRectangles(Brushes.White,SmallRect);
//fill sqares
g.DrawRectangles(Pens.Black,SmallRect);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
/// <summary>
/// Check point position to see if it's on tracker
/// </summary>
/// <param name="point">Current Point Position</param>
/// <returns></returns>
public bool Hit_Test(Point point)
{
//Check if the point is somewhere on the tracker
if (!ControlRect.Contains(point))
{
//should never happen
Cursor.Current = Cursors.Arrow;
return false;
}
else if(SmallRect[0].Contains(point))
{
Cursor.Current = Cursors.SizeNWSE;
CurrBorder = RESIZE_BORDER.RB_TOPLEFT;
}
else if(SmallRect[3].Contains(point))
{
Cursor.Current = Cursors.SizeNWSE;
CurrBorder = RESIZE_BORDER.RB_BOTTOMRIGHT;
}
else if(SmallRect[1].Contains(point))
{
Cursor.Current = Cursors.SizeNESW;
CurrBorder = RESIZE_BORDER.RB_TOPRIGHT;
}
else if(SmallRect[2].Contains(point))
{
Cursor.Current = Cursors.SizeNESW;
CurrBorder = RESIZE_BORDER.RB_BOTTOMLEFT;
}
else if(SmallRect[4].Contains(point))
{
Cursor.Current = Cursors.SizeNS;
CurrBorder = RESIZE_BORDER.RB_TOP;
}
else if(SmallRect[5].Contains(point))
{
Cursor.Current = Cursors.SizeNS;
CurrBorder = RESIZE_BORDER.RB_BOTTOM;
}
else if(SmallRect[6].Contains(point))
{
Cursor.Current = Cursors.SizeWE;
CurrBorder = RESIZE_BORDER.RB_LEFT;
}
else if(SmallRect[7].Contains(point))
{
Cursor.Current = Cursors.SizeWE;
CurrBorder = RESIZE_BORDER.RB_RIGHT;
}
else if(ControlRect.Contains(point))
{
Cursor.Current = Cursors.SizeAll;
CurrBorder = RESIZE_BORDER.RB_NONE;
}
return true;
}
/// <summary>
/// Check point position to see if it's on tracker
/// </summary>
/// <param name="x">X position</param>
/// <param name="y">Y position</param>
/// <returns></returns>
public bool Hit_Test(int x, int y)
{
return Hit_Test(new Point(x,y));
}
/// <summary>
/// Cunstructor
/// </summary>
/// <param name="theControl">The Control we want to use the Tracker on</param>
public RectTracker(Control theControl)
{
// This call is required by the Windows.Forms Form Designer.
InitializeComponent();
//set the tracked control
currentControl = theControl;
//Create the tracker
Create();
}
public RectTracker(Rectangle theRectangle)
{
// This call is required by the Windows.Forms Form Designer.
InitializeComponent();
//set the tracked control
currentRectangle = theRectangle;
//Create the tracker
Create();
}
public RectTracker()
{
// This call is required by the Windows.Forms Form Designer.
InitializeComponent();
}
/// <summary>
/// Setup the tracker
/// </summary>
private void Create()
{
//create tracker bounds
int X = currentControl.Bounds.X - Sqare.Width;
int Y = currentControl.Bounds.Y - Sqare.Height;
int Height = currentControl.Bounds.Height + (Sqare.Height*2);
int Width = currentControl.Bounds.Width + (Sqare.Width*2);
//set bounds
this.Bounds = new Rectangle(X,Y,Width+1,Height+1);
this.BringToFront();
//create inside rect bounds
Rect = currentControl.Bounds;
//create transparent area around the control
this.Region = new Region(BuildFrame());
//create graphics
g = this.CreateGraphics();
}
/// <summary>
/// Transparents the control area in the tracker
/// </summary>
/// <returns>Graphics Path made for transparenting</returns>
private GraphicsPath BuildFrame()
{
//make the tracker to "contain" the control like this:
//
//
//+++++++++++++++++++++++
//+ +
//+ +
//+ CONTROL +
//+ +
//+ +
//+++++++++++++++++++++++
//
GraphicsPath path = new GraphicsPath();
//Top Rectagle
path.AddRectangle(new Rectangle(0,0,currentControl.Width + (Sqare.Width*2)+1,Sqare.Height+1));;
//Left Rectangle
path.AddRectangle(new Rectangle(0,Sqare.Height+1,Sqare.Width+1,currentControl.Bounds.Height + Sqare.Height+1));
//Bottom Rectagle
path.AddRectangle(new Rectangle(Sqare.Width+1,currentControl.Bounds.Height + Sqare.Height,currentControl.Width + Sqare.Width +1,Sqare.Height+1));
//Right Rectagle
path.AddRectangle(new Rectangle(currentControl.Width + Sqare.Width,Sqare.Height+1,Sqare.Width+1,currentControl.Height-2));
return path;
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if(components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Component Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
//
// RectTracker
//
this.BackColor = System.Drawing.Color.Wheat;
this.Name = "RectTracker";
this.Size = new System.Drawing.Size(64, 56);
this.MouseUp += new System.Windows.Forms.MouseEventHandler(this.RectTracker_MouseUp);
this.Paint += new System.Windows.Forms.PaintEventHandler(this.RectTracker_Paint);
this.MouseMove += new System.Windows.Forms.MouseEventHandler(this.RectTracker_MouseMove);
}
#endregion
public void Mouse_Move(object sender,System.Windows.Forms.MouseEventArgs e)
{
//minimum size for the control is 8x8
if (currentControl.Height < 8)
{
currentControl.Height = 8;
return;
}
else if (currentControl.Width < 8)
{
currentControl.Width = 8;
return;
}
switch(this.CurrBorder)
{
case RESIZE_BORDER.RB_TOP:
currentControl.Height = currentControl.Height - e.Y + prevLeftClick.Y;
if (currentControl.Height > 8)
currentControl.Top = currentControl.Top + e.Y - prevLeftClick.Y;
break;
case RESIZE_BORDER.RB_TOPLEFT:
currentControl.Height = currentControl.Height - e.Y + prevLeftClick.Y;
if (currentControl.Height > 8)
currentControl.Top =currentControl.Top + e.Y - prevLeftClick.Y;
currentControl.Width = currentControl.Width - e.X + prevLeftClick.X;
if (currentControl.Width > 8)
currentControl.Left =currentControl.Left + e.X - prevLeftClick.X;
break;
case RESIZE_BORDER.RB_TOPRIGHT:
currentControl.Height = currentControl.Height - e.Y + prevLeftClick.Y;
if (currentControl.Height > 8)
currentControl.Top = currentControl.Top + e.Y - prevLeftClick.Y;
currentControl.Width = currentControl.Width + e.X - prevLeftClick.X;
break;
case RESIZE_BORDER.RB_RIGHT:
currentControl.Width = currentControl.Width + e.X - prevLeftClick.X;
break;
case RESIZE_BORDER.RB_BOTTOM:
currentControl.Height = currentControl.Height + e.Y - prevLeftClick.Y;
break;
case RESIZE_BORDER.RB_BOTTOMLEFT:
currentControl.Height = currentControl.Height + e.Y - prevLeftClick.Y;
currentControl.Width = currentControl.Width - e.X + prevLeftClick.X;
if (currentControl.Width > 8)
currentControl.Left = currentControl.Left + e.X - prevLeftClick.X;
break;
case RESIZE_BORDER.RB_BOTTOMRIGHT:
currentControl.Height = currentControl.Height + e.Y - prevLeftClick.Y;
currentControl.Width = currentControl.Width + e.X - prevLeftClick.X;
break;
case RESIZE_BORDER.RB_LEFT:
currentControl.Width = currentControl.Width - e.X + prevLeftClick.X;
if (currentControl.Width > 8)
currentControl.Left = currentControl.Left + e.X - prevLeftClick.X;
break;
case RESIZE_BORDER.RB_NONE:
currentControl.Location = new Point(currentControl.Location.X + e.X - prevLeftClick.X, currentControl.Location.Y + e.Y - prevLeftClick.Y);
break;
}
}
private void RectTracker_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
Cursor = Cursors.Arrow;
if (e.Button == MouseButtons.Left)
{
// If this is the first mouse move event for left click dragging of the form,
// store the current point clicked so that we can use it to calculate the form's
// new location in subsequent mouse move events due to left click dragging of the form
if(isFirst == true)
{
// Store previous left click position
prevLeftClick = new Point(e.X, e.Y);
// Subsequent mouse move events will not be treated as first time, until the
// left mouse click is released or other mouse click occur
isFirst = false;
}
else
{
//hide tracker
this.Visible = false;
//forward mouse position to append changes
Mouse_Move(this,e);
// Store new previous left click position
prevLeftClick = new Point(e.X, e.Y);
}
}
else
{
// This is a new mouse move event so reset flag
isFirst = true;
//show the tracker
this.Visible = true;
//update the mouse pointer to other cursors by checking it's position
Hit_Test(e.X,e.Y);
}
}
private void RectTracker_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
//redraw sqares
Draw();
}
private void RectTracker_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
//the mouse is up, recreate the control to append changes
Create();
this.Visible = true;
}
}
} |
Déplacement de formes / boutons /etc. En temps réel
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