linear-app-launcher/Windows/Forms/TilePanel.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Diagnostics;

namespace AppLauncher.Windows.Forms
{
    public partial class TilePanel : AUserControl
    {
        protected bool isDragging = false;
        protected Point startPosition = new Point();

        public TilePanel() : base()
        {
            InitializeComponent();

            this.MouseDown += panel_MouseDown;
            this.MouseUp += panel_MouseUp;
            this.MouseMove += panel_MouseMove;
            pictureBox1.MouseDown += panel_MouseDown;
            pictureBox1.MouseUp += panel_MouseUp;
            pictureBox1.MouseMove += panel_MouseMove;
            label1.MouseDown += panel_MouseDown;
            label1.MouseUp += panel_MouseUp;
            label1.MouseMove += panel_MouseMove;
        }

        protected override void OnLocationChanged(EventArgs e)
        {
            base.OnLocationChanged(e);

            if (this.Parent != null)
            {
                if (this.Parent.GetType() == typeof(TilePanelContainer))
                {
                    TilePanelContainer container = (TilePanelContainer)this.Parent;
                    Point p = container.GetTilePosition(this.Location);

                    //label1.Text = p.X.ToString() + ", " + p.Y.ToString();
                }
            }
        }

        [Category("Appearance"), Browsable(true)]
        public string TitleText { get => label1.Text; set => label1.Text = value; }

        [Category("Appearance"), Browsable(true)]
        public Image IconImage { get => pictureBox1.BackgroundImage; set => pictureBox1.BackgroundImage = value; }

        [Browsable(false)]
        public string ProcessFilename { get; set; }

        [Browsable(false)]
        public string ProcessArgument { get; set; }

        [Browsable(false)]
        public string ProcessWorkingDirectory { get; set; }

        [Browsable(false)]
        public ProcessWindowStyle ProcessWindowStyle { get; set; } = ProcessWindowStyle.Normal;

        public TilePanelContainer PanelContainer
        {
            get
            {
                if (this.Parent == null)
                {
                    return null;
                }

                if (this.Parent.GetType() != typeof(TilePanelContainer))
                {
                    return null;
                }

                return (TilePanelContainer)this.Parent;
            }
        }

        private void panel_MouseDown(object sender, MouseEventArgs e)
        {
            TilePanelContainer container = this.PanelContainer;
            if (container == null)
            {
                return;
            }

            if (e.Button != MouseButtons.Left)
            {
                return;
            }

            isDragging = true;
            startPosition = e.Location;
        }

        private void panel_MouseUp(object sender, MouseEventArgs e)
        {
            isDragging = false;
        }

        private void panel_MouseMove(object sender, MouseEventArgs e)
        {
            if (isDragging)
            {
                TilePanelContainer container = this.PanelContainer;
                if (container == null)
                {
                    return;
                }

                //label1.Text = e.Location.ToString();
                //this.Location = new Point(e.Location.X - windowOffset.X, e.Location.Y - windowOffset.Y);

                //int x = parentPosition.X + (e.Location.X - positionOffset.X);
                //int y = parentPosition.Y + (e.Location.Y - positionOffset.Y);
                //this.Location = new Point(x, y);

                //int x = (tilePosition.X + e.Location.X);
                //int y = (tilePosition.Y + e.Location.Y);

                int x = (this.Location.X + (e.Location.X - startPosition.X));
                int y = (this.Location.Y + (e.Location.Y - startPosition.Y));

                this.Location = container.GetTilePosition(x, y);


                //label1.Text = x.ToString() + ", " + y.ToString();

                //label1.Text = e.X.ToString() + ", " + e.Y.ToString();


                //Point pos = this.PointToScreen(e.Location);

                //int y = Math.Max((pos.Y - windowOffset.Y), Screen.PrimaryScreen.WorkingArea.Y);
                //y = Math.Min(y, (Screen.PrimaryScreen.WorkingArea.Y + Screen.PrimaryScreen.WorkingArea.Height) - this.Height);

                //this.Parent.Location = new Point(Screen.PrimaryScreen.WorkingArea.X, y);
            }

        }

    }
}