Simple SVG Editor

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Globalization;

namespace Draw
{
	/// <summary>
	/// Properties dialog for graphic object.
	/// Shows properties for one or more graphic objects.
	/// 
	/// Special value "Undefined" is used when number of objects
	/// have different property values.
	/// 
	/// Input/output: GraphicsProperties class.
	/// 
	/// </summary>
	public class PropertiesDialog : System.Windows.Forms.Form
	{
        private System.Windows.Forms.Button btnOK;
        private System.Windows.Forms.Button btnCancel;
        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.Label label2;
        private System.Windows.Forms.Label lblColor;
        private System.Windows.Forms.Button btnSelectColor;
        private System.Windows.Forms.Label lblPenWidth;
        private System.Windows.Forms.ComboBox cmbPenWidth;
		private System.Windows.Forms.CheckBox chFill;
		private System.Windows.Forms.Button btnSelectFillColor;
		private System.Windows.Forms.Label lblFillColor;
		private System.Windows.Forms.Label lblFill;
		private System.Windows.Forms.Label label6;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.Label lbAlpha2;
		private System.Windows.Forms.Label label5;
		private System.Windows.Forms.Label label4;
		private System.Windows.Forms.Label label7;
		private System.Windows.Forms.Label label8;
		private System.Windows.Forms.TrackBar tbStrokeOpacity;
		private System.Windows.Forms.TrackBar tbFillOpacity;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public PropertiesDialog()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

		/// <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 Windows Form 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.btnOK = new System.Windows.Forms.Button();
			this.btnCancel = new System.Windows.Forms.Button();
			this.label1 = new System.Windows.Forms.Label();
			this.label2 = new System.Windows.Forms.Label();
			this.lblColor = new System.Windows.Forms.Label();
			this.btnSelectColor = new System.Windows.Forms.Button();
			this.lblPenWidth = new System.Windows.Forms.Label();
			this.cmbPenWidth = new System.Windows.Forms.ComboBox();
			this.chFill = new System.Windows.Forms.CheckBox();
			this.btnSelectFillColor = new System.Windows.Forms.Button();
			this.lblFillColor = new System.Windows.Forms.Label();
			this.lblFill = new System.Windows.Forms.Label();
			this.label6 = new System.Windows.Forms.Label();
			this.label3 = new System.Windows.Forms.Label();
			this.lbAlpha2 = new System.Windows.Forms.Label();
			this.tbStrokeOpacity = new System.Windows.Forms.TrackBar();
			this.label5 = new System.Windows.Forms.Label();
			this.label4 = new System.Windows.Forms.Label();
			this.label7 = new System.Windows.Forms.Label();
			this.label8 = new System.Windows.Forms.Label();
			this.tbFillOpacity = new System.Windows.Forms.TrackBar();
			((System.ComponentModel.ISupportInitialize)(this.tbStrokeOpacity)).BeginInit();
			((System.ComponentModel.ISupportInitialize)(this.tbFillOpacity)).BeginInit();
			this.SuspendLayout();
			// 
			// btnOK
			// 
			this.btnOK.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.btnOK.Location = new System.Drawing.Point(40, 296);
			this.btnOK.Name = "btnOK";
			this.btnOK.Size = new System.Drawing.Size(80, 28);
			this.btnOK.TabIndex = 0;
			this.btnOK.Text = "Ok";
			this.btnOK.Click += new System.EventHandler(this.btnOK_Click);
			// 
			// btnCancel
			// 
			this.btnCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
			this.btnCancel.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.btnCancel.Location = new System.Drawing.Point(193, 296);
			this.btnCancel.Name = "btnCancel";
			this.btnCancel.Size = new System.Drawing.Size(80, 28);
			this.btnCancel.TabIndex = 1;
			this.btnCancel.Text = "Cancel";
			this.btnCancel.Click += new System.EventHandler(this.btnCancel_Click);
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(16, 16);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(80, 21);
			this.label1.TabIndex = 2;
			this.label1.Text = "Color";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(8, 56);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(88, 27);
			this.label2.TabIndex = 3;
			this.label2.Text = "Pen width";
			// 
			// lblColor
			// 
			this.lblColor.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
			this.lblColor.Location = new System.Drawing.Point(113, 16);
			this.lblColor.Name = "lblColor";
			this.lblColor.Size = new System.Drawing.Size(74, 21);
			this.lblColor.TabIndex = 4;
			this.lblColor.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
			// 
			// btnSelectColor
			// 
			this.btnSelectColor.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.btnSelectColor.Location = new System.Drawing.Point(224, 16);
			this.btnSelectColor.Name = "btnSelectColor";
			this.btnSelectColor.Size = new System.Drawing.Size(27, 28);
			this.btnSelectColor.TabIndex = 5;
			this.btnSelectColor.Text = "...";
			this.btnSelectColor.Click += new System.EventHandler(this.btnSelectColor_Click);
			// 
			// lblPenWidth
			// 
			this.lblPenWidth.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
			this.lblPenWidth.Location = new System.Drawing.Point(113, 56);
			this.lblPenWidth.Name = "lblPenWidth";
			this.lblPenWidth.Size = new System.Drawing.Size(74, 21);
			this.lblPenWidth.TabIndex = 6;
			this.lblPenWidth.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
			// 
			// cmbPenWidth
			// 
			this.cmbPenWidth.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
			this.cmbPenWidth.Location = new System.Drawing.Point(207, 56);
			this.cmbPenWidth.Name = "cmbPenWidth";
			this.cmbPenWidth.Size = new System.Drawing.Size(86, 21);
			this.cmbPenWidth.TabIndex = 7;
			this.cmbPenWidth.SelectedIndexChanged += new System.EventHandler(this.cmbPenWidth_SelectedIndexChanged);
			// 
			// chFill
			// 
			this.chFill.Location = new System.Drawing.Point(24, 152);
			this.chFill.Name = "chFill";
			this.chFill.Size = new System.Drawing.Size(168, 24);
			this.chFill.TabIndex = 8;
			this.chFill.Text = "Fill";
			this.chFill.CheckedChanged += new System.EventHandler(this.chFill_CheckedChanged);
			// 
			// btnSelectFillColor
			// 
			this.btnSelectFillColor.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.btnSelectFillColor.Location = new System.Drawing.Point(248, 184);
			this.btnSelectFillColor.Name = "btnSelectFillColor";
			this.btnSelectFillColor.Size = new System.Drawing.Size(27, 28);
			this.btnSelectFillColor.TabIndex = 11;
			this.btnSelectFillColor.Text = "...";
			this.btnSelectFillColor.Click += new System.EventHandler(this.btnSelectFillColor_Click);
			// 
			// lblFillColor
			// 
			this.lblFillColor.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
			this.lblFillColor.Location = new System.Drawing.Point(128, 184);
			this.lblFillColor.Name = "lblFillColor";
			this.lblFillColor.Size = new System.Drawing.Size(74, 21);
			this.lblFillColor.TabIndex = 10;
			this.lblFillColor.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
			// 
			// lblFill
			// 
			this.lblFill.Location = new System.Drawing.Point(24, 184);
			this.lblFill.Name = "lblFill";
			this.lblFill.Size = new System.Drawing.Size(80, 21);
			this.lblFill.TabIndex = 9;
			this.lblFill.Text = "Color";
			// 
			// label6
			// 
			this.label6.Location = new System.Drawing.Point(313, 120);
			this.label6.Name = "label6";
			this.label6.Size = new System.Drawing.Size(32, 16);
			this.label6.TabIndex = 66;
			this.label6.Text = "����";
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(81, 120);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(32, 16);
			this.label3.TabIndex = 65;
			this.label3.Text = "min";
			this.label3.Visible = false;
			// 
			// lbAlpha2
			// 
			this.lbAlpha2.Location = new System.Drawing.Point(8, 96);
			this.lbAlpha2.Name = "lbAlpha2";
			this.lbAlpha2.Size = new System.Drawing.Size(88, 23);
			this.lbAlpha2.TabIndex = 64;
			this.lbAlpha2.Text = "Opacity";
			this.lbAlpha2.Visible = false;
			// 
			// tbStrokeOpacity
			// 
			this.tbStrokeOpacity.Location = new System.Drawing.Point(128, 96);
			this.tbStrokeOpacity.Maximum = 255;
			this.tbStrokeOpacity.Name = "tbStrokeOpacity";
			this.tbStrokeOpacity.Size = new System.Drawing.Size(136, 45);
			this.tbStrokeOpacity.TabIndex = 63;
			this.tbStrokeOpacity.Visible = false;
			// 
			// label5
			// 
			this.label5.Location = new System.Drawing.Point(272, 120);
			this.label5.Name = "label5";
			this.label5.Size = new System.Drawing.Size(32, 16);
			this.label5.TabIndex = 67;
			this.label5.Text = "max";
			this.label5.Visible = false;
			// 
			// label4
			// 
			this.label4.Location = new System.Drawing.Point(280, 248);
			this.label4.Name = "label4";
			this.label4.Size = new System.Drawing.Size(32, 16);
			this.label4.TabIndex = 71;
			this.label4.Text = "max";
			this.label4.Visible = false;
			// 
			// label7
			// 
			this.label7.Location = new System.Drawing.Point(82, 248);
			this.label7.Name = "label7";
			this.label7.Size = new System.Drawing.Size(32, 16);
			this.label7.TabIndex = 70;
			this.label7.Text = "min";
			this.label7.Visible = false;
			// 
			// label8
			// 
			this.label8.Location = new System.Drawing.Point(9, 224);
			this.label8.Name = "label8";
			this.label8.Size = new System.Drawing.Size(88, 23);
			this.label8.TabIndex = 69;
			this.label8.Text = "Opacity";
			this.label8.Visible = false;
			// 
			// tbFillOpacity
			// 
			this.tbFillOpacity.Location = new System.Drawing.Point(137, 224);
			this.tbFillOpacity.Maximum = 255;
			this.tbFillOpacity.Name = "tbFillOpacity";
			this.tbFillOpacity.Size = new System.Drawing.Size(136, 45);
			this.tbFillOpacity.TabIndex = 68;
			this.tbFillOpacity.Visible = false;
			// 
			// PropertiesDialog
			// 
			this.AcceptButton = this.btnOK;
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.CancelButton = this.btnCancel;
			this.ClientSize = new System.Drawing.Size(314, 334);
			this.Controls.Add(this.label4);
			this.Controls.Add(this.label7);
			this.Controls.Add(this.label8);
			this.Controls.Add(this.tbFillOpacity);
			this.Controls.Add(this.label5);
			this.Controls.Add(this.label6);
			this.Controls.Add(this.label3);
			this.Controls.Add(this.lbAlpha2);
			this.Controls.Add(this.tbStrokeOpacity);
			this.Controls.Add(this.btnSelectFillColor);
			this.Controls.Add(this.lblFillColor);
			this.Controls.Add(this.lblFill);
			this.Controls.Add(this.chFill);
			this.Controls.Add(this.cmbPenWidth);
			this.Controls.Add(this.lblPenWidth);
			this.Controls.Add(this.btnSelectColor);
			this.Controls.Add(this.lblColor);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.label1);
			this.Controls.Add(this.btnCancel);
			this.Controls.Add(this.btnOK);
			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
			this.MaximizeBox = false;
			this.MinimizeBox = false;
			this.Name = "PropertiesDialog";
			this.ShowInTaskbar = false;
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
			this.Text = "Properties of drawing object";
			this.Load += new System.EventHandler(this.PropertiesDialog_Load);
			((System.ComponentModel.ISupportInitialize)(this.tbStrokeOpacity)).EndInit();
			((System.ComponentModel.ISupportInitialize)(this.tbFillOpacity)).EndInit();
			this.ResumeLayout(false);

		}
		#endregion

        private GraphicsProperties properties;
        private const string undefined = "??";
        private const int maxWidth = 15;

        public GraphicsProperties Properties
        {
            get
            {
                return properties;
            }
            set
            {
                properties = value;
            }
        }

        private void PropertiesDialog_Load(object sender, System.EventArgs e)
        {
            InitControls();
            SetColor();
            SetPenWidth();
        }

        private void InitControls()
        {
            for ( int i = 0; i <= maxWidth; i++ )
            {
                cmbPenWidth.Items.Add(i.ToString(CultureInfo.InvariantCulture));
            }
        }

        private void SetColor()
        {
            if ( ! properties.ColorDefined )
                lblColor.Text = undefined;
            else
                lblColor.BackColor = properties.Color;
			if ( ! properties.FillDefined )
				this.lblFillColor.Text = undefined;
			if (properties.IsFill)
			{
				this.chFill.Checked = true;
				lblFillColor.BackColor = properties.FillColor;
			}
			else
				this.chFill.Checked = false;
		}

		private void SetPenWidth()
		{
			float penWidth = properties.PenWidth;

			if ( penWidth < 0 )
				penWidth = 0;

			if ( penWidth > maxWidth )
				penWidth = maxWidth;

			if ( ! properties.PenWidthDefined )
				lblPenWidth.Text = undefined;
			else
			{
				try
				{
					lblPenWidth.Text = penWidth.ToString(CultureInfo.InvariantCulture);
					cmbPenWidth.SelectedIndex = Convert.ToInt32(penWidth);
				}
				catch {}
			}
		}

		private void ReadValues()
		{
			if ( cmbPenWidth.Text != undefined )
			{
				properties.PenWidthDefined = true;
				properties.PenWidth = cmbPenWidth.SelectedIndex;
			}

			if ( lblColor.Text.Length == 0 )
			{
				properties.ColorDefined = true;
				properties.Color = lblColor.BackColor;
			}

			if ( this.lblFillColor.Text.Length == 0 )
			{
				properties.FillDefined = true;
				properties.FillColor = this.lblFillColor.BackColor;
				properties.IsFill = this.chFill.Checked;
			}
		}

        private void cmbPenWidth_SelectedIndexChanged(object sender, System.EventArgs e)
        {
            int width = cmbPenWidth.SelectedIndex + 1;
            lblPenWidth.Text = width.ToString(CultureInfo.InvariantCulture);
        }

        private void btnSelectColor_Click(object sender, System.EventArgs e)
        {
            ColorDialog dlg = new ColorDialog();
            dlg.Color = lblColor.BackColor;

            if ( dlg.ShowDialog(this) == DialogResult.OK )
            {
                lblColor.BackColor = dlg.Color;
                lblColor.Text = "";
            }
        }

        private void btnOK_Click(object sender, System.EventArgs e)
        {
            ReadValues();
            this.DialogResult = DialogResult.OK;
        }

        private void btnCancel_Click(object sender, System.EventArgs e)
        {
            this.DialogResult = DialogResult.Cancel;
        }

		private void chFill_CheckedChanged(object sender, System.EventArgs e)
		{
			if (chFill.Checked)
			{
				this.lblFill.Enabled = true;
				this.btnSelectFillColor.Enabled = true;
			}
			else
			{
				this.lblFill.Enabled = false;
				this.btnSelectFillColor.Enabled = false;
			}
		}

		private void btnSelectFillColor_Click(object sender, System.EventArgs e)
		{
			ColorDialog dlg = new ColorDialog();
			dlg.Color = lblFillColor.BackColor;

			if ( dlg.ShowDialog(this) == DialogResult.OK )
			{
				this.lblFillColor.BackColor = dlg.Color;
				lblColor.Text = "";
			}
		}



	}
}