Tag.cs

using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.Windows.Forms;

namespace TagControls
{
    class TagControle
    {
        List<Label> labels = new List<Label>();

        Pen myPen = new Pen(Color.Black);
        TextureBrush myBrush = new TextureBrush(global::TagControls.Properties.Resources.Tagbar);
        SolidBrush myBlackBrush = new SolidBrush(Color.Black);
        SolidBrush myWhiteBrush = new SolidBrush(Color.White);
        SolidBrush Background = new SolidBrush(System.Drawing.SystemColors.Control);
        Graphics gfx;
        
        private Control TegneFlade;
        private TagContainer TheTagContainer;

        private int conSize;

        public TagControle(Control f, TagContainer tagcontainer)
        {
            gfx = f.CreateGraphics();
            TegneFlade = f;
            TheTagContainer = tagcontainer;
            conSize = f.Width - 54;
        }

        public void draw(int X, int Y, int procent, string keyWord, Boolean plusminus)
        {
            int nyY, Procent;
            nyY = Y + 14;

            int size = this.conSize + 1;

            //calculate the length of the status bar from % to C# unites
            Procent = Convert.ToInt32((Convert.ToDouble(procent) / 100.0 ) * Convert.ToDouble(conSize));

            //Draws the background, this is done becaus we need to remove parst of old tags
            gfx.FillRectangle(Background, new Rectangle(X, Y, conSize + 5, 100));

            //This draws the black box around the status bar    
            gfx.DrawLine(myPen, X, nyY, (X + size), nyY);                 //top
            gfx.DrawLine(myPen, X, (nyY + 4), (X + size), (nyY + 4));     //bund
            gfx.DrawLine(myPen, X, nyY, X, (nyY + 4));                    //V. side
            gfx.DrawLine(myPen, (X + size), nyY, (X + size), (nyY + 4));  //H. side

            //This draws the status bar
            gfx.FillRectangle(myWhiteBrush, new Rectangle((X + 1), (nyY + 1), conSize, 3));
            gfx.FillRectangle(myBrush, new Rectangle((X + 1), (nyY + 1), Procent, 3));

            //This draws the text of tah tag
            gfx.DrawString(keyWord,
                           new System.Drawing.Font("Microsoft Sans Serif", 8F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0))),
                           myBlackBrush,
                           new Point(X, Y));

            //Adds the +/- lable
            Label m = new System.Windows.Forms.Label();
            m.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
            m.Location = new System.Drawing.Point(X + (this.conSize + 4), Y + 3);
            m.Tag = keyWord;
            m.Name = "m";
            m.Size = new System.Drawing.Size(16, 16);
            if (plusminus)
                m.Text = "-";
            else
                m.Text = "+";
            m.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            m.Click += new EventHandler(m_Click);

            //Adds the +/- label the the drawing canvas
            TegneFlade.Controls.Add(m);
            
            //adds the label the a list of labels used, so we can remove is again
            labels.Add(m);
        }

        void m_Click(object sender, EventArgs e)
        {
            //finds the sender of the event 
            Label l = (Label)sender;

            if (l.Text == "-")
            {
                //A use can only remove hes own tags,
                //so we run through all the tags to find a tag with the text and username of the current user
                TheTagContainer.RemovedTag = new Shared.TagInfo(l.Tag.ToString(), TheTagContainer.ID, TheTagContainer.Username);

                foreach (Shared.TagInfo Tag in TheTagContainer.Tags)
                {
                    if (Tag.UserName == TheTagContainer.Username && Tag.Name == l.Tag.ToString())
                    {
                        TheTagContainer.Tags.Remove(Tag);
                        break;
                    }
                }
                //We cant triger an event of the tagcontainer so we have made a function in the tagcontauner we can run.
                TheTagContainer.FireRemoveTag();
            }
            else
            {
                //if one of the other tags are pressed we add a new with the same text but with a new user.
                TheTagContainer.AddedTag = new Shared.TagInfo(l.Tag.ToString(), TheTagContainer.ID, TheTagContainer.Username);
                TheTagContainer.Tags.Add(TheTagContainer.AddedTag);
                TheTagContainer.FireAddTag();
            }
        }
    
        public void TagCleaner(int X, int Y)
        {
            for (int i = 0; i < labels.Count; i++)
                labels[i].Dispose();
            
            //empty the label list
            labels.Clear();

            //draw over any old tags
            gfx.FillRectangle(Background, new Rectangle(X, Y, conSize + 5, labels.Count * 20));
        }
    }
}

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