mirror of
https://github.com/xcp-ng/xenadmin.git
synced 2024-12-22 16:36:03 +01:00
410 lines
14 KiB
C#
410 lines
14 KiB
C#
/* Copyright (c) Citrix Systems, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms,
|
|
* with or without modification, are permitted provided
|
|
* that the following conditions are met:
|
|
*
|
|
* * Redistributions of source code must retain the above
|
|
* copyright notice, this list of conditions and the
|
|
* following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the
|
|
* following disclaimer in the documentation and/or other
|
|
* materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
|
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
|
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.ComponentModel;
|
|
using System.Drawing;
|
|
using System.Data;
|
|
using System.Text;
|
|
using System.Windows.Forms;
|
|
using System.Drawing.Drawing2D;
|
|
|
|
namespace XenAdmin.Controls.GradientPanel
|
|
{
|
|
public partial class GradientPanel : Panel
|
|
{
|
|
public enum Schemes
|
|
{
|
|
Tab,
|
|
Properties,
|
|
Title,
|
|
}
|
|
|
|
#if xmas
|
|
private readonly Timer refreshTimer;
|
|
private readonly Random random = new Random();
|
|
private const int MaxStars = 16;
|
|
private const float MaxSpeed = 0.012f;
|
|
private const float MaxAngularVelocity = 0.001f;
|
|
private const int MinStarSize = 5;
|
|
private const int MaxStarSize = 13;
|
|
private const int MinStarSeparation = 30;
|
|
private const int MinStarPoints = 5;
|
|
private const int MaxStarPoints = 9;
|
|
private const int MinSpikiness = 3;
|
|
private const int MaxSpikiness = 6;
|
|
private const double NewStarProbability = 0.04;
|
|
private const double EggProbability = 0.001;
|
|
|
|
private bool starsEnabled;
|
|
public bool StarsEnabled
|
|
{
|
|
get
|
|
{
|
|
return starsEnabled;
|
|
}
|
|
set
|
|
{
|
|
if (value == starsEnabled)
|
|
return;
|
|
|
|
if (value)
|
|
{
|
|
refreshTimer.Start();
|
|
}
|
|
else
|
|
{
|
|
refreshTimer.Stop();
|
|
Invalidate();
|
|
}
|
|
|
|
starsEnabled = value;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
public GradientPanel()
|
|
{
|
|
SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
|
|
#if xmas
|
|
refreshTimer = new Timer();
|
|
refreshTimer.Interval = 60;
|
|
refreshTimer.Tick += new EventHandler(refreshTimer_Tick);
|
|
|
|
StarsEnabled = true;
|
|
}
|
|
|
|
private void refreshTimer_Tick(object sender, EventArgs e)
|
|
{
|
|
// Hack
|
|
if (this.Height != 50)
|
|
{
|
|
StarsEnabled = false;
|
|
}
|
|
Invalidate();
|
|
#endif
|
|
}
|
|
|
|
#region Properties
|
|
|
|
private Schemes scheme;
|
|
public Schemes Scheme
|
|
{
|
|
set
|
|
{
|
|
scheme = value;
|
|
Invalidate();
|
|
}
|
|
|
|
get
|
|
{
|
|
return scheme;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
private Brush NonVisualStylesBrush
|
|
{
|
|
get
|
|
{
|
|
switch (scheme)
|
|
{
|
|
case Schemes.Tab:
|
|
return SystemBrushes.Control;
|
|
case Schemes.Properties:
|
|
return SystemBrushes.Control;
|
|
case Schemes.Title:
|
|
return SystemBrushes.Control;
|
|
default:
|
|
System.Diagnostics.Trace.Assert(false);
|
|
return null;
|
|
}
|
|
}
|
|
}
|
|
|
|
private Brush GradientBrush(Rectangle bounds)
|
|
{
|
|
switch (scheme)
|
|
{
|
|
case Schemes.Tab:
|
|
return new LinearGradientBrush(bounds, Program.HeaderGradientStartColor, Program.HeaderGradientEndColor, LinearGradientMode.Horizontal);
|
|
case Schemes.Properties:
|
|
return new LinearGradientBrush(bounds, Program.HeaderGradientStartColor, Program.HeaderGradientEndColor, LinearGradientMode.Horizontal);
|
|
case Schemes.Title:
|
|
return new LinearGradientBrush(bounds, Program.TitleBarStartColor, Program.TitleBarEndColor, LinearGradientMode.Vertical);
|
|
default:
|
|
System.Diagnostics.Trace.Assert(false);
|
|
return null;
|
|
}
|
|
}
|
|
|
|
protected override void OnPaint(PaintEventArgs e)
|
|
{
|
|
if (Size.Width == 0 || Size.Height == 0)
|
|
return;
|
|
|
|
Rectangle bounds = new Rectangle(Point.Empty, Size);
|
|
|
|
if (!Application.RenderWithVisualStyles)
|
|
{
|
|
e.Graphics.FillRectangle(NonVisualStylesBrush, bounds);
|
|
}
|
|
else
|
|
{
|
|
using (Brush b = GradientBrush(bounds))
|
|
{
|
|
ButtonRenderer.DrawParentBackground(e.Graphics, bounds, this);
|
|
e.Graphics.FillRectangle(b, bounds);
|
|
#if xmas
|
|
if (StarsEnabled)
|
|
{
|
|
// Update position of each star
|
|
foreach (Star star in stars)
|
|
{
|
|
if (star.isEgg)
|
|
{
|
|
star.Y += MaxSpeed * 5;
|
|
}
|
|
else
|
|
{
|
|
star.Y += star.Radius * MaxSpeed;
|
|
star.Theta += star.AngularVelocity;
|
|
}
|
|
}
|
|
|
|
// Remove stars that have fallen off the bottom
|
|
stars.RemoveAll(delegate(Star star)
|
|
{
|
|
return star.Y - star.Radius > this.Bottom;
|
|
});
|
|
|
|
if (stars.Count < MaxStars && random.NextDouble() < NewStarProbability)
|
|
{
|
|
// Add new star
|
|
Star newStar = new Star();
|
|
|
|
newStar.Radius = random.Next(MinStarSize, MaxStarSize);
|
|
newStar.X = random.Next(0, bounds.Width);
|
|
newStar.Y = -newStar.Radius;
|
|
|
|
newStar.AngularVelocity = (float)(random.NextDouble() * MaxAngularVelocity);
|
|
if (random.NextDouble() > 0.5)
|
|
{
|
|
newStar.AngularVelocity = -newStar.AngularVelocity;
|
|
}
|
|
|
|
if (random.NextDouble() < EggProbability)
|
|
{
|
|
newStar.isEgg = true;
|
|
newStar.Radius = 40;
|
|
newStar.Y = -newStar.Radius;
|
|
newStar.Theta = 0.1f * (float)(-0.5 + random.NextDouble());
|
|
}
|
|
else
|
|
{
|
|
newStar.NumPoints = random.Next(MinStarPoints, MaxStarPoints);
|
|
newStar.Spikiness = random.Next(MinSpikiness, MaxSpikiness) / 10.0f;
|
|
}
|
|
|
|
if (!ContainsClose(stars, newStar, MinStarSeparation))
|
|
{
|
|
// Reject star if there is another nearby
|
|
stars.Add(newStar);
|
|
}
|
|
}
|
|
|
|
e.Graphics.SmoothingMode = SmoothingMode.HighQuality;
|
|
|
|
foreach (Star star in stars)
|
|
{
|
|
e.Graphics.ResetTransform();
|
|
e.Graphics.TranslateTransform(star.X, star.Y);
|
|
e.Graphics.RotateTransform(360 * star.Theta);
|
|
if (star.isEgg)
|
|
{
|
|
e.Graphics.ScaleTransform(0.35f, 0.35f);
|
|
|
|
using (Pen bluePen = new Pen(Color.SteelBlue, 3f), redPen = new Pen(Color.Red, 3f))
|
|
{
|
|
e.Graphics.FillPath(Brushes.MistyRose, EggBeziers);
|
|
e.Graphics.DrawPath(redPen, EggStripe);
|
|
e.Graphics.FillPath(Brushes.Yellow, EggStripe);
|
|
e.Graphics.DrawPath(bluePen, EggBeziers);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
PointF[] points = GetStarShape(star.NumPoints, star.Radius, star.Spikiness);
|
|
e.Graphics.DrawPolygon(Pens.DodgerBlue, points);
|
|
using (SolidBrush brush = new SolidBrush(Color.FromArgb(200, Color.LightBlue)))
|
|
{
|
|
e.Graphics.FillPolygon(brush, points);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
|
|
if (scheme == Schemes.Title)
|
|
{
|
|
using (Pen p = new Pen(Program.TitleBarBorderColor))
|
|
{
|
|
e.Graphics.DrawRectangle(p, new Rectangle(bounds.Left, bounds.Top, bounds.Width - 1, bounds.Height - 1));
|
|
}
|
|
}
|
|
}
|
|
|
|
protected override void OnPaintBackground(PaintEventArgs e)
|
|
{
|
|
// do nothing
|
|
}
|
|
|
|
#if xmas
|
|
private static readonly List<Star> stars = new List<Star>();
|
|
|
|
private class Star
|
|
{
|
|
public float X, Y, Radius, Theta, AngularVelocity;
|
|
public int NumPoints;
|
|
public double Spikiness;
|
|
public bool isEgg;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Determines if there is a star in the list within maxRadius of the given star.
|
|
/// </summary>
|
|
/// <param name="centres"></param>
|
|
/// <param name="centre"></param>
|
|
/// <param name="maxRadius"></param>
|
|
/// <returns></returns>
|
|
private static bool ContainsClose(List<Star> stars, Star s, int maxRadius)
|
|
{
|
|
foreach (Star star in stars)
|
|
{
|
|
if (Math.Sqrt(Math.Pow(star.X - s.X, 2) + Math.Pow(star.Y - s.Y, 2)) < maxRadius)
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
private static PointF[] GetStarShape(int points, double radius, double ratio)
|
|
{
|
|
List<PointF> result = new List<PointF>();
|
|
|
|
bool odd = false;
|
|
for (double theta = 0; theta < 2 * Math.PI; theta += ((2 * Math.PI) / (2 * points)))
|
|
{
|
|
result.Add(RadialToCartesian(theta, odd ? ratio * radius : radius));
|
|
odd = !odd;
|
|
}
|
|
|
|
return result.ToArray();
|
|
}
|
|
|
|
private static PointF RadialToCartesian(double theta, double r)
|
|
{
|
|
return new PointF((float)(r * Math.Cos(theta)), (float)(r * Math.Sin(theta)));
|
|
}
|
|
|
|
private static GraphicsPath eggBeziers;
|
|
private static GraphicsPath EggBeziers
|
|
{
|
|
get
|
|
{
|
|
if (eggBeziers == null)
|
|
{
|
|
eggBeziers = new GraphicsPath();
|
|
eggBeziers.AddBeziers(new PointF[] {
|
|
new PointF(0, 0),
|
|
|
|
new PointF(12, 0),
|
|
new PointF(24, 18),
|
|
new PointF(24, 40),
|
|
new PointF(24, 56),
|
|
new PointF(12, 65),
|
|
|
|
new PointF(0, 65),
|
|
|
|
new PointF(-12, 65),
|
|
new PointF(-24, 56),
|
|
new PointF(-24, 40),
|
|
new PointF(-24, 18),
|
|
new PointF(-12, 0),
|
|
|
|
new PointF(0, 0)
|
|
});
|
|
}
|
|
|
|
return eggBeziers;
|
|
}
|
|
}
|
|
|
|
private static GraphicsPath eggStripe;
|
|
private static GraphicsPath EggStripe
|
|
{
|
|
get
|
|
{
|
|
if (eggStripe == null)
|
|
{
|
|
eggStripe = new GraphicsPath();
|
|
eggStripe.AddLines(new PointF[] {
|
|
new PointF(-23 ,32),
|
|
new PointF(-16, 36),
|
|
new PointF(-8, 31),
|
|
new PointF(0, 36),
|
|
new PointF(8, 31),
|
|
new PointF(16, 36),
|
|
|
|
new PointF(23, 32),
|
|
new PointF(23, 42),
|
|
|
|
new PointF(16, 51),
|
|
new PointF(8, 46),
|
|
new PointF(0, 51),
|
|
new PointF(-8, 46),
|
|
new PointF(-16, 51),
|
|
new PointF(-23, 47)
|
|
});
|
|
}
|
|
|
|
return eggStripe;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
}
|