pictureviewer.cs

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using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.IO;
using System.Resources;
using System.Windows.Forms;
using Addot.Drawing;

namespace Pex
{
	/// <summary>
	/// Summary description for PictureViewer.
	/// </summary>
	public class PictureViewer : System.Windows.Forms.Form
	{
        #region --- Fields ---
        private enum BitmapNavigation {BitmapPrevious, BitmapNext};
        private FileInfo BitmapFile;
        private bool FullScreen = false;
        private bool IsMoving = false;
        private int MouseX;
        private int MouseY;
        #endregion

        #region --- Controls ---
        private System.Windows.Forms.PictureBox pbDisplay;
        private System.Windows.Forms.ToolBar tbViewer;
        private System.Windows.Forms.ToolBarButton tbbZoomMinus;
        private System.Windows.Forms.ToolBarButton tbbZoomPlus;
        private System.Windows.Forms.ToolBarButton tbbZoomNone;
        private System.Windows.Forms.ToolBarButton tbbFitToScreen;
        private System.Windows.Forms.ToolBarButton tbbFullScreen;
        private System.Windows.Forms.ImageList ilToolbar;
        private System.Windows.Forms.MainMenu mainMenu;
        private System.Windows.Forms.ToolBarButton tbbRotateHours;
        private System.Windows.Forms.ToolBarButton tbbRotateAntiHours;
        private System.Windows.Forms.ToolBarButton tbbPrevious;
        private System.Windows.Forms.ToolBarButton tbbNext;
        #endregion

        #region --- Properties ---
        private string PictureName
        {
            set
            {
                BitmapFile = new FileInfo(value);
                if( pbDisplay.Image != null )
                {
                    pbDisplay.Image.Dispose();
                }
                pbDisplay.Image = new Bitmap(BitmapFile.FullName);
                this.DisplayDefault();
                ResourceManager rm = new ResourceManager(GetType().Namespace + "." + "PexRes", this.GetType().Assembly);
                this.Text = rm.GetString("PexTitle") + " - " + BitmapFile.Name;
            }
        }

        #endregion

		public PictureViewer()
		{
            Cursor.Current = Cursors.WaitCursor;
            //
			// Required for Windows Form Designer support
			//
			InitializeComponent();
        }

		#region Windows Form Designer generated code
		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			base.Dispose( disposing );
		}

		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
            System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(PictureViewer));
            // 
            // PictureViewer
            // 
            this.ClientSize = ((System.Drawing.Size)(resources.GetObject("$this.ClientSize")));
            this.Font = ((System.Drawing.Font)(resources.GetObject("$this.Font")));
            this.Location = new System.Drawing.Point(0, 0);
            this.mainMenu = new System.Windows.Forms.MainMenu();
            this.Menu = this.mainMenu;
            // 
            // pbDisplay
            // 
            this.pbDisplay = new System.Windows.Forms.PictureBox();
            this.pbDisplay.Parent = this;
            this.pbDisplay.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
            this.pbDisplay.MouseDown += new System.Windows.Forms.MouseEventHandler(this.OnBeginMoving);
            // 
            // ilToolbar
            // 
            this.ilToolbar = new System.Windows.Forms.ImageList();
            this.ilToolbar.Images.Add(((System.Drawing.Image)(resources.GetObject("resource"))));
            this.ilToolbar.Images.Add(((System.Drawing.Image)(resources.GetObject("resource1"))));
            this.ilToolbar.Images.Add(((System.Drawing.Image)(resources.GetObject("resource2"))));
            this.ilToolbar.Images.Add(((System.Drawing.Image)(resources.GetObject("resource3"))));
            this.ilToolbar.Images.Add(((System.Drawing.Image)(resources.GetObject("resource4"))));
            this.ilToolbar.Images.Add(((System.Drawing.Image)(resources.GetObject("resource5"))));
            this.ilToolbar.Images.Add(((System.Drawing.Image)(resources.GetObject("resource6"))));
            this.ilToolbar.Images.Add(((System.Drawing.Image)(resources.GetObject("resource7"))));
            this.ilToolbar.Images.Add(((System.Drawing.Image)(resources.GetObject("resource8"))));
            this.ilToolbar.ImageSize = new System.Drawing.Size(16, 16);
            // 
            // tbViewer
            // 
            this.tbViewer = new System.Windows.Forms.ToolBar();
            this.tbViewer.Parent = this;
            this.tbViewer.ImageList = this.ilToolbar;
            this.tbViewer.ButtonClick += new System.Windows.Forms.ToolBarButtonClickEventHandler(this.OnToolBarClick);
            // 
            // tbbPrevious
            // 
            this.tbbPrevious = new System.Windows.Forms.ToolBarButton();
            this.tbViewer.Buttons.Add(this.tbbPrevious);
            this.tbbPrevious.ImageIndex = 0;
            // 
            // tbbNext
            // 
            this.tbbNext = new System.Windows.Forms.ToolBarButton();
            this.tbViewer.Buttons.Add(this.tbbNext);
            this.tbbNext.ImageIndex = 1;
            // 
            // tbbFitToScreen
            // 
            this.tbbFitToScreen = new System.Windows.Forms.ToolBarButton();
            this.tbViewer.Buttons.Add(this.tbbFitToScreen);
            this.tbbFitToScreen.ImageIndex = 2;
            // 
            // tbbZoomNone
            // 
            this.tbbZoomNone = new System.Windows.Forms.ToolBarButton();
            this.tbViewer.Buttons.Add(this.tbbZoomNone);
            this.tbbZoomNone.ImageIndex = 3;
            // 
            // tbbZoomPlus
            // 
            this.tbbZoomPlus = new System.Windows.Forms.ToolBarButton();
            this.tbViewer.Buttons.Add(this.tbbZoomPlus);
            this.tbbZoomPlus.ImageIndex = 4;
            // 
            // tbbZoomMinus
            // 
            this.tbbZoomMinus = new System.Windows.Forms.ToolBarButton();
            this.tbViewer.Buttons.Add(this.tbbZoomMinus);
            this.tbbZoomMinus.ImageIndex = 5;
            // 
            // tbbRotateHours
            // 
            this.tbbRotateHours = new System.Windows.Forms.ToolBarButton();
            this.tbViewer.Buttons.Add(this.tbbRotateHours);
            this.tbbRotateHours.ImageIndex = 6;
            // 
            // tbbRotateAntiHours
            // 
            this.tbbRotateAntiHours = new System.Windows.Forms.ToolBarButton();
            this.tbViewer.Buttons.Add(this.tbbRotateAntiHours);
            this.tbbRotateAntiHours.ImageIndex = 7;
            // 
            // tbbFullScreen
            // 
            this.tbbFullScreen = new System.Windows.Forms.ToolBarButton();
            this.tbViewer.Buttons.Add(this.tbbFullScreen);
            this.tbbFullScreen.ImageIndex = 8;

        }
		#endregion

        #region --- HMI interactions ---
		protected override void OnActivated(EventArgs e)
		{
			base.OnActivated (e);
			this.PictureName = ImageFileList.Singleton.Current;
		}

		protected override void OnKeyDown(KeyEventArgs e)
        {
            if( ( pbDisplay.Width > this.Width ) || ( pbDisplay.Height > this.Height ) )
            {
                int shiftH = (int)(pbDisplay.Width / 10);
                int shiftV = (int)(pbDisplay.Height / 10);

                Point current = pbDisplay.Location;
                Point newPos = new Point(current.X, current.Y);

                switch(e.KeyData)
                {
                    // F21 is always sent, whatever the key pressed
                    case Keys.F21: break;
                    case Keys.Left:
                        newPos.X += shiftH;
                        pbDisplay.Location = newPos;
                        break;
                    case Keys.Right:
                        newPos.X -= shiftH;
                        pbDisplay.Location = newPos;
                        break;
                    case Keys.Up:
                        newPos.Y += shiftV;
                        pbDisplay.Location = newPos;
                        break;
                    case Keys.Down:
                        newPos.Y -= shiftV;
                        pbDisplay.Location = newPos;
                        break;
                    default:
                        pbDisplay.Location = SizeProcessor.CenterToContainer(this.Size, pbDisplay.Size);
                        break;
                }
            }

            base.OnKeyDown (e);
        }

        private void OnToolBarClick(object sender, System.Windows.Forms.ToolBarButtonClickEventArgs e)
        {
            Cursor.Current = Cursors.WaitCursor;
            switch(tbViewer.Buttons.IndexOf(e.Button))
            {
                // Previous
                case 0:
                    this.OnPrevious();
                    break;
                // Next
                case 1:
                    this.OnNext();
                    break;
                // Fit to screen
                case 2:
                    this.OnFitToScreen();
                    break;
                // No zoom
                case 3:
                    this.OnZoomNone();
                    break;
                // Zoom +
                case 4:
                    this.OnZoomPlus();
                    break;
                // Zoom -
                case 5:
                    this.OnZoomMinus();
                    break;
                // Rotate 90