using System;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Design;
using System.Drawing.Drawing2D;
using System.Drawing.Text;
using System.Windows.Forms;
using System.Windows.Forms.Design;
namespace WizardBase
{
/// <summary>
/// Represents two color pair with gradient angle.
/// </summary>
[Editor(typeof(ColorPairEditor), typeof(UITypeEditor))]
[TypeConverter(typeof(ExpandableObjectConverter))]
[Serializable]
public class ColorPair : ICloneable
{
#region Fields
private Color backColor1;
private Color backColor2;
private int gradient;
private readonly int currentDefaultGradient = 90;
#endregion
#region Constructor
/// <summary>
/// Initializes a new instance of the <see cref="ColorPair"/> class.
/// </summary>
public ColorPair()
{
backColor1 = Color.Empty;
backColor2 = Color.Empty;
gradient = 90;
}
/// <summary>
/// Initializes a new instance of the <see cref="ColorPair"/> class.
/// </summary>
/// <param name="backColor1">Start color.</param>
/// <param name="backColor2">End color</param>
/// <param name="gradient">Gradient of the brush.</param>
public ColorPair(Color backColor1, Color backColor2, int gradient)
{
this.backColor1 = backColor1;
this.backColor2 = backColor2;
this.gradient = gradient;
currentDefaultGradient = gradient;
}
#endregion
#region Override
///<summary>
///Returns a <see cref="T:System.String"></see> that represents the current <see cref="T:System.Object"></see>.
///</summary>
///
///<returns>
///A <see cref="T:System.String"></see> that represents the current <see cref="T:System.Object"></see>.
///</returns>
///<filterpriority>2</filterpriority>
public override string ToString()
{
return "BackColor1 : " + backColor1 + ";" + "BackColor2 : " + backColor2 + ";" + "Gradient : " + gradient;
}
///<summary>
///Serves as a hash function for a particular type. <see cref="M:System.Object.GetHashCode"></see> is suitable for use in hashing algorithms and data structures like a hash table.
///</summary>
///
///<returns>
///A hash code for the current <see cref="T:System.Object"></see>.
///</returns>
///<filterpriority>2</filterpriority>
public override int GetHashCode()
{
return ToString().GetHashCode();
}
///<summary>
///Determines whether the specified <see cref="T:System.Object"></see> is equal to the current <see cref="T:System.Object"></see>.
///</summary>
///
///<returns>
///true if the specified <see cref="T:System.Object"></see> is equal to the current <see cref="T:System.Object"></see>; otherwise, false.
///</returns>
///
///<param name="obj">The <see cref="T:System.Object"></see> to compare with the current <see cref="T:System.Object"></see>. </param><filterpriority>2</filterpriority>
public override bool Equals(object obj)
{
ColorPair pair = obj as ColorPair;
if (pair != null)
{
return pair.BackColor1.Equals(backColor1) && pair.BackColor2.Equals(backColor2) && pair.Gradient.Equals(gradient);
}
return false;
}
#endregion
#region Property
/// <summary>
/// Gets or sets Start color.
/// </summary>
public Color BackColor1
{
get { return backColor1; }
set
{
if (!backColor1.Equals(value))
{
backColor1 = value;
OnAppearenceChanged(new GenericEventArgs<bool>(true));
}
}
}
/// <summary>
/// Gets or sets End color.
/// </summary>
public Color BackColor2
{
get { return backColor2; }
set
{
if (!backColor2.Equals(value))
{
backColor2 = value;
OnAppearenceChanged(new GenericEventArgs<bool>(true));
}
}
}
/// <summary>
/// Gets or sets Gradient.
/// </summary>
[Editor(typeof(GradientAngleEditor), typeof(UITypeEditor))]
public int Gradient
{
get { return gradient; }
set
{
if (!gradient.Equals(value))
{
gradient = value;
OnAppearenceChanged(new GenericEventArgs<bool>(true));
}
}
}
#endregion
public static bool operator ==(ColorPair p1, ColorPair p2)
{
if (ReferenceEquals(p1, null))
{
return ReferenceEquals(p2, null);
}
return p1.Equals(p2);
}
public static bool operator !=(ColorPair p1, ColorPair p2)
{
return !(p1 == p2);
}
public event GenericEventHandler<bool> AppearenceChanged;
protected virtual void OnAppearenceChanged(GenericEventArgs<bool> e)
{
if (AppearenceChanged != null)
{
AppearenceChanged(this, e);
}
}
#region IClonable member
///<summary>
///Creates a new object that is a copy of the current instance.
///</summary>
///
///<returns>
///A new object that is a copy of this instance.
///</returns>
///<filterpriority>2</filterpriority>
public object Clone()
{
ColorPair pair = new ColorPair();
pair.backColor1 = backColor1;
pair.backColor2 = backColor2;
pair.gradient = gradient;
return pair;
}
#endregion
#region Reset methods used by IDE
public void ResetBackColor1()
{
backColor1 = Color.Empty;
}
public void ResetBackColor2()
{
backColor2 = Color.Empty;
}
public void ResetGradient()
{
gradient = 90;
}
#endregion
#region Should Serialize methods used by IDE
public bool ShouldSerializeBackColor1()
{
return !backColor1.IsEmpty;
}
public bool ShouldSerializeBackColor2()
{
return !backColor2.IsEmpty;
}
public bool ShouldSerializeGradient()
{
return gradient != currentDefaultGradient;
}
#endregion
#region Nested class
#region Nested type: ColorPairEditor
/// <summary>
/// UITypeEditor for <see cref="ColorPair"/> type.
/// </summary>
public class ColorPairEditor : UITypeEditor
{
#region Fields
private DisplayStyleUI display;
#endregion
#region Override
///<summary>
///Edits the specified object's value using the editor style indicated by the <see cref="M:System.Drawing.Design.UITypeEditor.GetEditStyle"></see> method.
///</summary>
///
///<returns>
///The new value of the object. If the value of the object has not changed, this should return the same object it was passed.
///</returns>
///
///<param name="context">An <see cref="T:System.ComponentModel.ITypeDescriptorContext"></see> that can be used to gain additional context information. </param>
///<param name="value">The object to edit. </param>
///<param name="provider">An <see cref="T:System.IServiceProvider"></see> that this editor can use to obtain services. </param>
public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value)
{
if (provider != null)
{
IWindowsFormsEditorService edSvc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService));
if (edSvc == null)
{
return value;
}
if (display == null)
{
display = new DisplayStyleUI();
}
display.Start(edSvc, value);
edSvc.DropDownControl(display);
value = display.Value;
display.End();
}
return value;
}
///<summary>
///Gets the editor style used by the <see cref="M:System.Drawing.Design.UITypeEditor.EditValue(System.IServiceProvider,System.Object)"></see> method.
///</summary>
///
///<returns>
///A <see cref="T:System.Drawing.Design.UITypeEditorEditStyle"></see> value that indicates the style of editor used by the <see cref="M:System.Drawing.Design.UITypeEditor.EditValue(System.IServiceProvider,System.Object)"></see> method. If the <see cref="T:System.Drawing.Design.UITypeEditor"></see> does not support this method, then <see cref="M:System.Drawing.Design.UITypeEditor.GetEditStyle"></see> will return <see cref="F:System.Drawing.Design.UITypeEditorEditStyle.None"></see>.
///</returns>
///
///<param name="context">An <see cref="T:System.ComponentModel.ITypeDescriptorContext"></see> that can be used to gain additional context information. </param>
public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context)
{
return UITypeEditorEditStyle.DropDown;
}
///<summary>
///Indicates whether the specified context supports painting a representation of an object's value within the specified context.
///</summary>
///
///<returns>
///true if <see cref="M:System.Drawing.Design.UITypeEditor.PaintValue(System.Object,System.Drawing.Graphics,System.Drawing.Rectangle)"></see> is implemented; otherwise, false.
///</returns>
///
///<param name="context">An <see cref="T:System.ComponentModel.ITypeDescriptorContext"></see> that can be used to gain additional context information. </param>
public override bool GetPaintValueSupported(ITypeDescriptorContext context)
{
return true;
}
///<summary>
///Paints a representation of the value of an object using the specified <see cref="T:System.Drawing.Design.PaintValueEventArgs"></see>.
///</summary>
///
///<param name="e">A <see cref="T:System.Drawing.Design.PaintValueEventArgs"></see> that indicates what to paint and where to paint it. </param>
public override void PaintValue(PaintValueEventArgs e)
{
base.PaintValue(e);
ColorPair pair = e.Value as ColorPair;
if (pair != null)
{
LinearGradientBrush br = new LinearGradientBrush(e.Bounds, pair.BackColor1, pair.BackColor2, pair.Gradient);
e.Graphics.FillRectangle(br, e.Bounds);
}
}
#endregion
}
#endregion
#region Nested type: DisplayStyleUI
[ToolboxItem(false)]
private class DisplayStyleUI : UserControl
{
#region Fields
private Label lblBack1;
private Label lblBack2;
private Label lblCurrent;
private Label lblGrad;
private Label lblNew;
private Label lblOldGrad;
private Label lblPreview;
private Panel pnlNewBack1;
private Panel pnlNewBack2;
private Panel pnlOldBack1;
private Panel pnlOldBack2;
private Panel pnlPreview;
private GradientAngleEditor.GradientEditorUI gradUI;
private ColorPair value;
private IWindowsFormsEditorService edSvc;
#endregion
#region Constructor
internal DisplayStyleUI()
{
InitializeComponent();
}
#endregion
///<summary>
///Raises the <see cref="E:System.Windows.Forms.Control.Validated"></see> event.
///</summary>
///
///<param name="e">An <see cref="T:System.EventArgs"></see> that contains the event data. </param>
protected override void OnValidated(EventArgs e)
{
value.BackColor1 = pnlNewBack1.BackColor;
value.BackColor2 = pnlNewBack2.BackColor;
value.Gradient = gradUI.Value;
}
#region Private Methods
private void PaintPanel(PaintEventArgs e)
{
LinearGradientBrush brush1 = new LinearGradientBrush(pnlPreview.ClientRectangle, value.BackColor1, value.BackColor2, value.Gradient);
e.Graphics.FillRectangle(brush1, pnlPreview.ClientRectangle);
}
#endregion
#region Public property
public ColorPair Value
{
get { return value; }
}
#endregion
#region Designer generated code
private void InitializeComponent()
{
this.pnlPreview = new System.Windows.Forms.Panel();
this.lblPreview = new System.Windows.Forms.Label();
this.lblBack1 = new System.Windows.Forms.Label();
this.lblBack2 = new System.Windows.Forms.Label();
this.lblGrad = new System.Windows.Forms.Label();
this.pnlOldBack1 = new System.Windows.Forms.Panel();
this.pnlOldBack2 = new System.Windows.Forms.Panel();
this.lblOldGrad = new System.Windows.Forms.Label();
this.lblCurrent = new System.Windows.Forms.Label();
this.lblNew = new System.Windows.Forms.Label();
this.pnlNewBack2 = new System.Windows.Forms.Panel();
this.pnlNewBack1 = new System.Windows.Forms.Panel();
gradUI = new GradientAngleEditor.GradientEditorUI();
this.SuspendLayout();
//
// pnlPreview
//
this.pnlPreview.Location = new System.Drawing.Point(3, 20);
this.pnlPreview.Name = "pnlPreview";
this.pnlPreview.Size = new System.Drawing.Size(64, 136);
this.pnlPreview.TabIndex = 0;
this.pnlPreview.Paint += new System.Windows.Forms.PaintEventHandler(this.panel1_Paint);
//
// lblPreview
//
this.lblPreview.AutoSize = true;
this.lblPreview.Location = new System.Drawing.Point(0, 4);
this.lblPreview.Name = "lblPreview";
this.lblPreview.Size = new System.Drawing.Size(69, 13);
this.lblPreview.TabIndex = 1;
this.lblPreview.Text = "&Preview area";
//
// lblBack1
//
this.lblBack1.AutoSize = true;
this.lblBack1.Location = new System.Drawing.Point(73, 20);
this.lblBack1.Name = "lblBack1";
this.lblBack1.Size = new System.Drawing.Size(62, 13);
this.lblBack1.TabIndex = 2;
this.lblBack1.Text = "BackColor1";
//
// lblBack2
//
this.lblBack2.AutoSize = true;
this.lblBack2.Location = new System.Drawing.Point(73, 45);
this.lblBack2.Name = "lblBack2";
this.lblBack2.Size = new System.Drawing.Size(62, 13);
this.lblBack2.TabIndex = 3;
this.lblBack2.Text = "BackColor2";
//
// lblGrad
//
this.lblGrad.AutoSize = true;
this.lblGrad.Location = new System.Drawing.Point(73, 102);
this.lblGrad.Name = "lblGrad";
this.lblGrad.Size = new System.Drawing.Size(47, 13);
this.lblGrad.TabIndex = 4;
this.lblGrad.Text = "Gradient";
//
// pnlOldBack1
//
this.pnlOldBack1.BorderStyle = BorderStyle.FixedSingle;
this.pnlOldBack1.Location = new System.Drawing.Point(169, 20);
this.pnlOldBack1.Name = "pnlOldBack1";
this.pnlOldBack1.Size = new System.Drawing.Size(13, 13);
this.pnlOldBack1.TabIndex = 5;
//
// pnlOldBack2
//
this.pnlOldBack2.BorderStyle = BorderStyle.FixedSingle;
this.pnlOldBack2.Location = new System.Drawing.Point(169, 45);
this.pnlOldBack2.Name = "pnlOldBack2";
this.pnlOldBack2.Size = new System.Drawing.Size(13, 13);
this.pnlOldBack2.TabIndex = 6;
//
// lblOldGrad
//
this.lblOldGrad.AutoSize = true;
this.lblOldGrad.Location = new System.Drawing.Point(166, 69);
this.lblOldGrad.Name = "lblOldGrad";
this.lblOldGrad.Size = new System.Drawing.Size(0, 13);
this.lblOldGrad.TabIndex = 7;
//
// lblCurrent
//
this.lblCurrent.AutoSize = true;
this.lblCurrent.Location = new System.Drawing.Point(145, 4);
this.lblCurrent.Name = "lblCurrent";
this.lblCurrent.Size = new System.Drawing.Size(70, 13);
this.lblCurrent.TabIndex = 8;
this.lblCurrent.Text = "&Current value";
//
// lblNew
//
this.lblNew.AutoSize = true;
this.lblNew.Location = new System.Drawing.Point(243, 4);
this.lblNew.Name = "lblNew";
this.lblNew.Size = new System.Drawing.Size(58, 13);
this.lblNew.TabIndex = 12;
this.lblNew.Text = "&New value";
//
// pnlNewBack2
//
this.pnlNewBack2.BorderStyle = BorderStyle.FixedSingle;
this.pnlNewBack2.Location = new System.Drawing.Point(269, 45);
this.pnlNewBack2.Name = "pnlNewBack2";
this.pnlNewBack2.Size = new System.Drawing.Size(13, 13);
this.pnlNewBack2.TabIndex = 10;
this.pnlNewBack2.Click += new System.EventHandler(this.pnlNewBack2_Click);
//
// pnlNewBack1
//
this.pnlNewBack1.BorderStyle = BorderStyle.FixedSingle;
this.pnlNewBack1.Location = new System.Drawing.Point(269, 20);
this.pnlNewBack1.Name = "pnlNewBack1";
this.pnlNewBack1.Size = new System.Drawing.Size(13, 13);
this.pnlNewBack1.TabIndex = 9;
this.pnlNewBack1.Click += new System.EventHandler(this.pnlNewBack1_Click);
//
// gradUI
//
this.gradUI.AutoSize = true;
this.gradUI.Location = new System.Drawing.Point(169, 64);
this.gradUI.Name = "gradUI";
this.gradUI.Size = new System.Drawing.Size(113, 90);
this.gradUI.TabIndex = 14;
this.gradUI.ValueChanged += new EventHandler(label1_ValueChanged);
//
// DisplayStyleUI
//
this.Controls.Add(this.gradUI);
this.Controls.Add(this.lblNew);
this.Controls.Add(this.pnlNewBack2);
this.Controls.Add(this.pnlNewBack1);
this.Controls.Add(this.lblCurrent);
this.Controls.Add(this.lblOldGrad);
this.Controls.Add(this.pnlOldBack2);
this.Controls.Add(this.pnlOldBack1);
this.Controls.Add(this.lblGrad);
this.Controls.Add(this.lblBack2);
this.Controls.Add(this.lblBack1);
this.Controls.Add(this.lblPreview);
this.Controls.Add(this.pnlPreview);
this.Name = "DisplayStyleUI";
this.Size = new System.Drawing.Size(314, 159);
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
#region Public Method
public void Start(IWindowsFormsEditorService service, object val)
{
this.edSvc = service;
value = val as ColorPair;
if (val != null)
{
pnlOldBack1.BackColor = value.BackColor1;
pnlOldBack2.BackColor = value.BackColor2;
pnlNewBack1.BackColor = value.BackColor1;
pnlNewBack2.BackColor = value.BackColor2;
lblOldGrad.Text = value.Gradient.ToString();
gradUI.Value = value.Gradient;
pnlPreview.Refresh();
}
}
public void End()
{
edSvc = null;
value = null;
}
#endregion
#region Event handler
private void panel1_Paint(object sender, PaintEventArgs e)
{
PaintPanel(e);
}
private void pnlNewBack2_Click(object sender, EventArgs e)
{
ColorDialog dlg = new ColorDialog();
dlg.AllowFullOpen = true;
dlg.AnyColor = true;
dlg.Color = value.BackColor2;
dlg.FullOpen = true;
if (dlg.ShowDialog() == DialogResult.OK)
{
value.BackColor2 = dlg.Color;
pnlNewBack2.BackColor = dlg.Color;
}
pnlPreview.Refresh();
}
private void pnlNewBack1_Click(object sender, EventArgs e)
{
ColorDialog dlg = new ColorDialog();
dlg.AllowFullOpen = true;
dlg.AnyColor = true;
dlg.Color = value.BackColor1;
dlg.FullOpen = true;
if (dlg.ShowDialog() == DialogResult.OK)
{
value.BackColor1 = dlg.Color;
pnlNewBack1.BackColor = dlg.Color;
}
pnlPreview.Refresh();
}
private void label1_ValueChanged(object sender, EventArgs e)
{
value.Gradient = gradUI.GetValue();
pnlPreview.Refresh();
}
#endregion
}
#endregion
private class GradientAngleEditor : UITypeEditor
{
///<summary>
///Gets the editor style used by the <see cref="M:System.Drawing.Design.UITypeEditor.EditValue(System.IServiceProvider,System.Object)"></see> method.
///</summary>
///
///<returns>
///A <see cref="T:System.Drawing.Design.UITypeEditorEditStyle"></see> value that indicates the style of editor used by the <see cref="M:System.Drawing.Design.UITypeEditor.EditValue(System.IServiceProvider,System.Object)"></see> method. If the <see cref="T:System.Drawing.Design.UITypeEditor"></see> does not support this method, then <see cref="M:System.Drawing.Design.UITypeEditor.GetEditStyle"></see> will return <see cref="F:System.Drawing.Design.UITypeEditorEditStyle.None"></see>.
///</returns>
///
///<param name="context">An <see cref="T:System.ComponentModel.ITypeDescriptorContext"></see> that can be used to gain additional context information. </param>
public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context)
{
if (context != null && context.Instance != null)
{
return UITypeEditorEditStyle.DropDown;
}
return base.GetEditStyle(context);
}
///<summary>
///Edits the specified object's value using the editor style indicated by the <see cref="M:System.Drawing.Design.UITypeEditor.GetEditStyle"></see> method.
///</summary>
///
///<returns>
///The new value of the object. If the value of the object has not changed, this should return the same object it was passed.
///</returns>
///
///<param name="context">An <see cref="T:System.ComponentModel.ITypeDescriptorContext"></see> that can be used to gain additional context information. </param>
///<param name="value">The object to edit. </param>
///<param name="provider">An <see cref="T:System.IServiceProvider"></see> that this editor can use to obtain services. </param>
public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value)
{
IWindowsFormsEditorService editorService;
GradientEditorUI editor;
if (context != null && context.Instance != null && provider != null)
{
editorService = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService));
if (!(value is int && (int)value < 360 && (int)value >= 0))
{
value = 0;
}
if (editorService != null)
{
int currentValue = (int)value;
editor = new GradientEditorUI(currentValue);
editor.Dock = DockStyle.Fill;
editorService.DropDownControl(editor);
value = editor.GetValue();
}
}
editorService = null;
return value;
}
///<summary>
///Indicates whether the specified context supports painting a representation of an object's value within the specified context.
///</summary>
///
///<returns>
///true if <see cref="M:System.Drawing.Design.UITypeEditor.PaintValue(System.Object,System.Drawing.Graphics,System.Drawing.Rectangle)"></see> is implemented; otherwise, false.
///</returns>
///
///<param name="context">An <see cref="T:System.ComponentModel.ITypeDescriptorContext"></see> that can be used to gain additional context information. </param>
public override bool GetPaintValueSupported(ITypeDescriptorContext context)
{
return false;
}
#region Nested type: GradientEditorUI
[ToolboxItem(false)]
internal class GradientEditorUI : UserControl
{
/// <summary>
/// Required designer variable.
/// </summary>
private readonly IContainer components = null;
private int diameter;
private int hoverValue;
private int midx;
private int midy;
private int value;
internal event EventHandler ValueChanged;
internal virtual void OnValueChanged()
{
if (ValueChanged != null)
{
ValueChanged(this, EventArgs.Empty);
}
}
internal GradientEditorUI()
{
value = 0;
InitializeComponent();
}
internal GradientEditorUI(int value)
{
this.value = value;
InitializeComponent();
}
public int Value
{
get { return value; }
set
{
if (value != this.value)
{
this.value = value;
OnValueChanged();
}
}
}
///<summary>
///Raises the <see cref="E:System.Windows.Forms.Control.Paint"></see> event.
///</summary>
///
///<param name="e">A <see cref="T:System.Windows.Forms.PaintEventArgs"></see> that contains the event data. </param>
protected override void OnPaint(PaintEventArgs e)
{
PaintValue(e);
}
///<summary>
///Raises the <see cref="E:System.Windows.Forms.Control.MouseDown"></see> event.
///</summary>
///
///<param name="e">A <see cref="T:System.Windows.Forms.MouseEventArgs"></see> that contains the event data. </param>
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
if (HitTest(e.Location))
{
int angle = GetAngle(e.Location);
if (angle != -1)
{
value = angle;
OnValueChanged();
}
Invalidate();
}
}
///<summary>
///Raises the <see cref="E:System.Windows.Forms.Control.MouseMove"></see> event.
///</summary>
///
///<param name="e">A <see cref="T:System.Windows.Forms.MouseEventArgs"></see> that contains the event data. </param>
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (HitTest(e.Location))
{
int angle = GetAngle(e.Location);
if (angle != -1)
{
hoverValue = angle;
}
Invalidate(new Rectangle((int)(Width - diameter * 0.25), 1, (int)(0.25 * diameter), (int)(2 * Font.SizeInPoints)));
}
}
private bool HitTest(Point point)
{
int distance = (int)Math.Sqrt((point.X - midx) * (point.X - midx) + (point.Y - midy) * (point.Y - midy));
return distance <= (diameter * 0.7) / 2;
}
private int GetAngle(Point p)
{
if ((p.X - midx) != 0)
{
int ret = (int)((Math.Atan((p.Y - midy) / (float)(p.X - midx))) * (180) / Math.PI);
if ((p.Y - midy) >= 0 && (p.X - midx) <= 0)
{
ret = 180 + ret;
}
else if ((p.Y - midy) <= 0 && (p.X - midx) <= 0)
{
ret = 180 + ret;
}
else if ((p.Y - midy) <= 0 && (p.X - midx) >= 0)
{
ret = 360 + ret;
}
return ret;
}
else
{
if ((p.Y - midy) > 0)
{
return 90;
}
else if ((p.Y - midy) < 0)
{
return 270;
}
else
{
return -1;
}
}
}
private void PaintValue(PaintEventArgs e)
{
e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
e.Graphics.TextRenderingHint = TextRenderingHint.AntiAlias;
e.Graphics.CompositingQuality = CompositingQuality.HighQuality;
e.Graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
diameter = Math.Min(Height, Width);
midx = ClientSize.Width / 2;
midy = ClientSize.Height / 2;
DrawFrame(e);
e.Graphics.DrawString(value.ToString(), Font, Brushes.Red, 1, 1);
e.Graphics.DrawString(hoverValue.ToString(), Font, Brushes.Green, (float)(Width - diameter * 0.25), 1);
DrawLine(e, value, Color.Red);
if (HitTest(MousePosition))
{
DrawLine(e, hoverValue, Color.Green);
}
}
private void DrawLine(PaintEventArgs e, int val, Color color)
{
Pen p = new Pen(color, 2);
Point current = GetCurrentPoint(val);
e.Graphics.DrawLine(p, midx, midy, current.X, current.Y);
}
private Point GetCurrentPoint(int val)
{
return new Point((int)(midx + Math.Cos(val * Math.PI / 180) * diameter * 0.8 / 2), (int)(midy + Math.Sin(val * Math.PI / 180) * diameter * 0.8 / 2));
}
///<summary>
///Processes a command key.
///</summary>
///
///<returns>
///true if the character was processed by the control; otherwise, false.
///</returns>
///
///<param name="keyData">One of the <see cref="T:System.Windows.Forms.Keys"></see> values that represents the key to process. </param>
///<param name="msg">A <see cref="T:System.Windows.Forms.Message"></see>, passed by reference, that represents the window message to process. </param>
protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
if ((Enabled) && ((msg.Msg == 256) || (msg.Msg == 260)))
{
switch (keyData)
{
case Keys.Left:
if (value > 0)
{
value--;
}
break;
case Keys.Up:
if (value < 360)
{
value++;
}
break;
case Keys.Right:
if (value < 360)
{
value++;
}
break;
case Keys.Down:
if (value > 0)
{
value--;
}
break;
}
OnValueChanged();
}
if (value == 360)
{
value = 0;
}
Invalidate();
return base.ProcessCmdKey(ref msg, keyData);
}
private void DrawFrame(PaintEventArgs e)
{
Pen p = new Pen(Color.Black, 2);
Rectangle drawRect = new Rectangle((int)(midx - 0.7 * diameter / 2), (int)(midy - 0.7 * diameter / 2), (int)(0.7 * diameter), (int)(0.7 * diameter));
e.Graphics.DrawEllipse(p, drawRect);
drawRect.Inflate(1, 1);
e.Graphics.TranslateClip(1, 1);
e.Graphics.DrawEllipse(Pens.Gray, drawRect);
e.Graphics.DrawLine(Pens.Black, midx, midy - diameter / 2, midx, midy + diameter / 2);
e.Graphics.DrawLine(Pens.Black, midx - diameter / 2, midy, midx + diameter / 2, midy);
e.Graphics.DrawString("0", Font, Brushes.LimeGreen, (float)(midx + 0.8 * diameter / 2), midy);
e.Graphics.DrawString("180", Font, Brushes.LimeGreen, (midx - diameter / 2), midy);
e.Graphics.DrawString("90", Font, Brushes.LimeGreen, midx, (float)(midy + 0.8 * diameter / 2));
e.Graphics.DrawString("270", Font, Brushes.LimeGreen, midx, (midy - diameter / 2));
}
internal int GetValue()
{
return value;
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (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()
{
this.SuspendLayout();
//
// GradientEditorUI
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.BackColor = System.Drawing.SystemColors.Window;
this.Name = "GradientEditorUI";
this.ResumeLayout(false);
}
#endregion
}
#endregion
}
#endregion
}
}
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