Gradient Waiting Bar Control (C# Source)

PhilipKalogero — Wed, 27 Oct 2004 18:11:45 GMT

Source κώδικας για το πολύ όμορφο και "μοδάτο" Waiting Bar Control που βρήκα κάπου...Source κώδικας C#

(αυτό το μπλε είναι, κάτω κάτω, το οποίο κάνει animate)

// This control is Gradient Waiting Bar.

using System;

using System.Windows.Forms;

using System.Drawing;

using System.Drawing.Drawing2D;

using System.Diagnostics;

namespace KDHLib.Controls

{

public class GradientWaitingBar : System.Windows.Forms.Control

{

public GradientWaitingBar()

{

// Set the control styles

this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);

this.SetStyle(ControlStyles.DoubleBuffer, true);

this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);

this.SetStyle(ControlStyles.UserPaint, true);

this.SetStyle(ControlStyles.ResizeRedraw, true);

// Set the default size of this control

this.Left = 0;

this.Top = 0;

this.Width = DEF_WIDTH;

this.Height = DEF_HEIGHT;

InitializeComponent();

this.m_timer.Enabled = this.Enabled;

m_col1 = Color.White;

m_col2 = Color.Blue;

this.BackColor = m_col1;

// Make a gradient Bitmap

MakeBitmapForWaitingBar();

}

private void InitializeComponent()

{

this.components = new System.ComponentModel.Container();

this.m_timer = new System.Windows.Forms.Timer(this.components);

this.m_timer.Tick += new System.EventHandler(this.m_timer_Tick);

this.m_timer.Interval = 10;

}

#region "Variables"

const int DEF_WIDTH = 50;

const int DEF_HEIGHT = 18;

private System.Windows.Forms.Timer m_timer;

private System.ComponentModel.IContainer components;

private System.Drawing.Color m_col1, m_col2;

private System.Drawing.Bitmap m_bitmap = null;

private int xloc = 0;

private int m_nSpeed = 5;

private SCROLLGRADIENTALIGN m_nScrollway = SCROLLGRADIENTALIGN.HORIZONTAL;

// enum variable of align this control

public enum SCROLLGRADIENTALIGN

{

HORIZONTAL = 0,

VERTICAL

};

#endregion

#region "Properties"

// property of timer

[System.ComponentModel.Description("Gets or sets the Interval of timer tick count for Speed of GradientWaitingBar"), System.ComponentModel.Category("Behavior")]

public int Interval

{

get

{

return m_timer.Interval;

}

set

{

m_timer.Interval = value;

}

// property of speed in scrolling.

[System.ComponentModel.Description("Gets or sets the speed of gradient for GradientWaitingBar"), System.ComponentModel.Category("Behavior")]

public int Speed

{

get

{

return m_nSpeed;

}

set

{

m_nSpeed = value;

}

// property of begin color in linear gradient

[System.ComponentModel.Description("Gets or sets the starting color of the gradient for GradientWaitingBar"), System.ComponentModel.Category("Appearance")]

public Color GradientColor1

{

get

{

return m_col1;

}

set

{

m_col1 = value;

MakeBitmapForWaitingBar();

}

// property of end color in linear gradient

[System.ComponentModel.Description("Gets or sets the ending color of the gradient for GradientWaitingBar"), System.ComponentModel.Category("Appearance")]

public Color GradientColor2

{

get

{

return m_col2;

}

set

{

m_col2 = value;

MakeBitmapForWaitingBar();

}

// property of scrolling direction in control

[System.ComponentModel.Description("Gets or sets the direction of scrolling the gradient"), System.ComponentModel.Category("Appearance")]

public SCROLLGRADIENTALIGN ScrollWAY

{

get

{

return m_nScrollway;

}

set

{

m_nScrollway = value;

MakeBitmapForWaitingBar();

}

#endregion

#region "Override Functions"

// if control is disabled, we do not display the gradient.

protected override void OnEnabledChanged(EventArgs e)

{

m_timer.Enabled = this.Enabled;

base.OnEnabledChanged (e);

}

// On Size changed, we make a new bitmap of current size

protected override void OnSizeChanged(EventArgs e)

{

MakeBitmapForWaitingBar();

base.OnSizeChanged (e);

}

// scroll the gradient bitmap

protected override void OnPaint(PaintEventArgs e)

{

if(m_bitmap != null)

{

Graphics g = e.Graphics;

Rectangle rt2;

rt2 = this.ClientRectangle;

if(m_nScrollway == SCROLLGRADIENTALIGN.HORIZONTAL)

{

rt2.X = rt2.Width - xloc;

rt2.Width = xloc;

g.DrawImage(m_bitmap, xloc, 0, this.ClientRectangle, GraphicsUnit.Pixel);

g.DrawImage(m_bitmap, 0, 0, rt2, GraphicsUnit.Pixel);

}

else

{

rt2.Y = rt2.Height - xloc;

rt2.Height = xloc;

g.DrawImage(m_bitmap, 0, xloc, this.ClientRectangle, GraphicsUnit.Pixel);

g.DrawImage(m_bitmap, 0, 0, rt2, GraphicsUnit.Pixel);

}

base.OnPaint (e);

}

#endregion

private void m_timer_Tick(object sender, System.EventArgs e)

{

xloc += m_nSpeed;

if(m_nScrollway == SCROLLGRADIENTALIGN.HORIZONTAL)

{

if(xloc > this.ClientSize.Width)

xloc = 0;

}

else

{

if(xloc > this.ClientSize.Height)

xloc = 0;

}

Invalidate();

}

// Make a Gradient Bitmap

// For performance, on sizing and changed Properties first makes a suitable bitmap image of gradient

// and then On paint this control uses it.

private void MakeBitmapForWaitingBar()

{

//check the windows size

if(this.ClientRectangle.Width == 0 || this.ClientRectangle.Height == 0)

return;

if(m_bitmap != null)

m_bitmap.Dispose();

Graphics gimage = null, gWnd = null;

Brush br1, br2;

Rectangle rt1, rt2;

// Get temporary DC and make a compatible bitmap with current Windows.

gWnd = Graphics.FromHwnd(this.Handle);

m_bitmap = new Bitmap(this.ClientRectangle.Width, this.ClientRectangle.Height, gWnd);

gWnd.Dispose();

if(m_nScrollway == SCROLLGRADIENTALIGN.HORIZONTAL)

{

rt1 = this.ClientRectangle;

rt1.Width = this.ClientRectangle.Width/2+1;

rt2 = rt1;

rt2.X = this.ClientRectangle.Width/2;

rt2.Width = this.ClientRectangle.Width/2+1;

br1 = new LinearGradientBrush(rt1, m_col1, m_col2, LinearGradientMode.Horizontal);

br2 = new LinearGradientBrush(rt2, m_col2, m_col1, LinearGradientMode.Horizontal);

}

else

{

rt1 = this.ClientRectangle;

rt1.Height = this.ClientRectangle.Height/2 + 1;

rt2 = rt1;

rt2.Y = this.ClientRectangle.Height / 2;

rt2.Height = this.ClientRectangle.Height/2 + 1;

br1 = new LinearGradientBrush(rt1, m_col1, m_col2, LinearGradientMode.Vertical);

br2 = new LinearGradientBrush(rt2, m_col2, m_col1, LinearGradientMode.Vertical);

}

// make a new bitmap

gimage = Graphics.FromImage(m_bitmap);

gimage.FillRectangle(br2, rt2);

gimage.FillRectangle(br1, rt1);

gimage.Dispose();

}

WinForms

Gradient Waiting Bar Control (C# Source)