using System;
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using HalconTools;
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using System.Collections;
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using HalconDotNet;
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namespace HalconTools
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{
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public delegate void IconicDelegate(int val);
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public delegate void FuncDelegate();
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/// <summary>
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/// This class works as a wrapper class for the HALCON window
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/// HWindow. HWndCtrl is in charge of the visualization.
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/// You can move and zoom the visible image part by using GUI component
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/// inputs or with the mouse. The class HWndCtrl uses a graphics stack
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/// to manage the iconic objects for the display. Each object is linked
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/// to a graphical context, which determines how the object is to be drawn.
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/// The context can be changed by calling changeGraphicSettings().
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/// The graphical "modes" are defined by the class GraphicsContext and
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/// map most of the dev_set_* operators provided in HDevelop.
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/// </summary>
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public class HWndCtrl
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{
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/// <summary>No action is performed on mouse events</summary>
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public const int MODE_VIEW_NONE = 10;
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/// <summary>Zoom is performed on mouse events</summary>
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public const int MODE_VIEW_ZOOM = 11;
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/// <summary>Move is performed on mouse events</summary>
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public const int MODE_VIEW_MOVE = 12;
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/// <summary>Magnification is performed on mouse events</summary>
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public const int MODE_VIEW_ZOOMWINDOW = 13;
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public const int MODE_INCLUDE_ROI = 1;
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public const int MODE_EXCLUDE_ROI = 2;
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/// <summary>
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/// Constant describes delegate message to signal new image
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/// </summary>
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public const int EVENT_UPDATE_IMAGE = 31;
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/// <summary>
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/// Constant describes delegate message to signal error
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/// when reading an image from file
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/// </summary>
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public const int ERR_READING_IMG = 32;
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/// <summary>
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/// Constant describes delegate message to signal error
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/// when defining a graphical context
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/// </summary>
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public const int ERR_DEFINING_GC = 33;
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/// <summary>
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/// Maximum number of HALCON objects that can be put on the graphics
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/// stack without loss. For each additional object, the first entry
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/// is removed from the stack again.
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/// </summary>
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private const int MAXNUMOBJLIST = 50;
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private int stateView;
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private bool mousePressed = false;
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private double startX,startY;
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/// <summary>HALCON window</summary>
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private HWindowControl viewPort;
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/// <summary>
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/// Instance of ROIController, which manages ROI interaction
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/// </summary>
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private ROIController roiManager;
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/* dispROI is a flag to know when to add the ROI models to the
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paint routine and whether or not to respond to mouse events for
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ROI objects */
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private int dispROI;
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/* Basic parameters, like dimension of window and displayed image part */
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private int windowWidth;
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private int windowHeight;
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private int imageWidth;
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private int imageHeight;
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private int[] CompRangeX;
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private int[] CompRangeY;
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private int prevCompX, prevCompY;
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private double stepSizeX, stepSizeY;
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/* Image coordinates, which describe the image part that is displayed
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in the HALCON window */
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private double ImgRow1, ImgCol1, ImgRow2, ImgCol2;
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/// <summary>Error message when an exception is thrown</summary>
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public string exceptionText = "";
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/* Delegates to send notification messages to other classes */
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/// <summary>
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/// Delegate to add information to the HALCON window after
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/// the paint routine has finished
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/// </summary>
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public FuncDelegate addInfoDelegate;
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/// <summary>
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/// Delegate to notify about failed tasks of the HWndCtrl instance
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/// </summary>
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public IconicDelegate NotifyIconObserver;
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private HWindow ZoomWindow;
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private double zoomWndFactor;
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private double zoomAddOn;
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private int zoomWndSize;
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/// <summary>
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/// List of HALCON objects to be drawn into the HALCON window.
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/// The list shouldn't contain more than MAXNUMOBJLIST objects,
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/// otherwise the first entry is removed from the list.
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/// </summary>
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private ArrayList HObjList;
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/// <summary>
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/// Instance that describes the graphical context for the
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/// HALCON window. According on the graphical settings
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/// attached to each HALCON object, this graphical context list
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/// is updated constantly.
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/// </summary>
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private GraphicsContext mGC;
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/// <summary>
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/// Initializes the image dimension, mouse delegation, and the
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/// graphical context setup of the instance.
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/// </summary>
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/// <param name="view"> HALCON window </param>
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public HWndCtrl(HWindowControl view)
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{
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viewPort = view;
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stateView = MODE_VIEW_NONE;
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windowWidth = viewPort.Size.Width;
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windowHeight = viewPort.Size.Height;
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zoomWndFactor = (double)imageWidth / viewPort.Width;
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zoomAddOn = Math.Pow(0.9, 5);
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zoomWndSize = 150;
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/*default*/
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CompRangeX = new int[] { 0, 100 };
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CompRangeY = new int[] { 0, 100 };
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prevCompX = prevCompY = 0;
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dispROI = MODE_INCLUDE_ROI;//1;
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viewPort.HMouseUp += new HalconDotNet.HMouseEventHandler(this.mouseUp);
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viewPort.HMouseDown += new HalconDotNet.HMouseEventHandler(this.mouseDown);
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viewPort.HMouseMove += new HalconDotNet.HMouseEventHandler(this.mouseMoved);
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addInfoDelegate = new FuncDelegate(dummyV);
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NotifyIconObserver = new IconicDelegate(dummy);
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// graphical stack
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HObjList = new ArrayList(20);
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mGC = new GraphicsContext();
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mGC.gcNotification = new GCDelegate(exceptionGC);
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}
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/// <summary>
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/// Registers an instance of an ROIController with this window
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/// controller (and vice versa).
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/// </summary>
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/// <param name="rC">
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/// Controller that manages interactive ROIs for the HALCON window
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/// </param>
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public void useROIController(ROIController rC)
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{
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roiManager = rC;
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rC.setViewController(this);
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}
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/// <summary>
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/// Read dimensions of the image to adjust own window settings
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/// </summary>
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/// <param name="image">HALCON image</param>
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private void setImagePart(HImage image)
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{
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string s;
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int w,h;
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image.GetImagePointer1(out s, out w, out h);
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setImagePart(0, 0, h, w);
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}
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/// <summary>
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/// Adjust window settings by the values supplied for the left
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/// upper corner and the right lower corner
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/// </summary>
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/// <param name="r1">y coordinate of left upper corner</param>
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/// <param name="c1">x coordinate of left upper corner</param>
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/// <param name="r2">y coordinate of right lower corner</param>
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/// <param name="c2">x coordinate of right lower corner</param>
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private void setImagePart(int r1, int c1, int r2, int c2)
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{
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ImgRow1 = r1;
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ImgCol1 = c1;
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ImgRow2 = imageHeight = r2;
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ImgCol2 = imageWidth = c2;
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System.Drawing.Rectangle rect = viewPort.ImagePart;
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rect.X = (int)ImgCol1;
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rect.Y = (int)ImgRow1;
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rect.Height = (int)imageHeight;
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rect.Width = (int)imageWidth;
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viewPort.ImagePart = rect;
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}
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/// <summary>
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/// Sets the view mode for mouse events in the HALCON window
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/// (zoom, move, magnify or none).
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/// </summary>
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/// <param name="mode">One of the MODE_VIEW_* constants</param>
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public void setViewState(int mode)
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{
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stateView = mode;
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if (roiManager != null)
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roiManager.resetROI();
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}
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/********************************************************************/
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private void dummy(int val)
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{
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}
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private void dummyV()
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{
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}
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/*******************************************************************/
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private void exceptionGC(string message)
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{
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exceptionText = message;
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NotifyIconObserver(ERR_DEFINING_GC);
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}
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/// <summary>
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/// Paint or don't paint the ROIs into the HALCON window by
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/// defining the parameter to be equal to 1 or not equal to 1.
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/// </summary>
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public void setDispLevel(int mode)
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{
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dispROI = mode;
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}
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/****************************************************************************/
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/* graphical element */
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/****************************************************************************/
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private void zoomImage(double x, double y, double scale)
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{
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double lengthC, lengthR;
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double percentC, percentR;
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int lenC, lenR;
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percentC = (x - ImgCol1) / (ImgCol2 - ImgCol1);
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percentR = (y - ImgRow1) / (ImgRow2 - ImgRow1);
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lengthC = (ImgCol2 - ImgCol1) * scale;
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lengthR = (ImgRow2 - ImgRow1) * scale;
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ImgCol1 = x - lengthC * percentC;
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ImgCol2 = x + lengthC * (1 - percentC);
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ImgRow1 = y - lengthR * percentR;
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ImgRow2 = y + lengthR * (1 - percentR);
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lenC = (int)Math.Round(lengthC);
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lenR = (int)Math.Round(lengthR);
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System.Drawing.Rectangle rect = viewPort.ImagePart;
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rect.X = (int)Math.Round(ImgCol1);
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rect.Y = (int)Math.Round(ImgRow1);
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rect.Width = (lenC > 0) ? lenC : 1;
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rect.Height = (lenR > 0) ? lenR : 1;
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viewPort.ImagePart = rect;
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zoomWndFactor *= scale;
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repaint();
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}
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/// <summary>
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/// Scales the image in the HALCON window according to the
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/// value scaleFactor
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/// </summary>
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public void zoomImage(double scaleFactor)
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{
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double midPointX, midPointY;
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if (((ImgRow2 - ImgRow1) == scaleFactor * imageHeight) &&
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((ImgCol2 - ImgCol1) == scaleFactor * imageWidth))
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{
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repaint();
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return;
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}
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ImgRow2 = ImgRow1 + imageHeight;
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ImgCol2 = ImgCol1 + imageWidth;
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midPointX = ImgCol1;
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midPointY = ImgRow1;
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zoomWndFactor = (double)imageWidth / viewPort.Width;
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zoomImage(midPointX, midPointY, scaleFactor);
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}
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/// <summary>
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/// Scales the HALCON window according to the value scale
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/// </summary>
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public void scaleWindow(double scale)
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{
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ImgRow1 = 0;
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ImgCol1 = 0;
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ImgRow2 = imageHeight;
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ImgCol2 = imageWidth;
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viewPort.Width = (int)(ImgCol2 * scale);
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viewPort.Height = (int)(ImgRow2 * scale);
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zoomWndFactor = ((double)imageWidth / viewPort.Width);
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}
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/// <summary>
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/// Recalculates the image-window-factor, which needs to be added to
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/// the scale factor for zooming an image. This way the zoom gets
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/// adjusted to the window-image relation, expressed by the equation
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/// imageWidth/viewPort.Width.
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/// </summary>
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public void setZoomWndFactor()
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{
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zoomWndFactor = ((double)imageWidth / viewPort.Width);
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}
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/// <summary>
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/// Sets the image-window-factor to the value zoomF
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/// </summary>
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public void setZoomWndFactor(double zoomF)
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{
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zoomWndFactor = zoomF;
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}
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/*******************************************************************/
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private void moveImage(double motionX, double motionY)
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{
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ImgRow1 += -motionY;
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ImgRow2 += -motionY;
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ImgCol1 += -motionX;
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ImgCol2 += -motionX;
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System.Drawing.Rectangle rect = viewPort.ImagePart;
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rect.X = (int)Math.Round(ImgCol1);
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rect.Y = (int)Math.Round(ImgRow1);
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viewPort.ImagePart = rect;
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repaint();
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}
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/// <summary>
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/// Resets all parameters that concern the HALCON window display
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/// setup to their initial values and clears the ROI list.
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/// </summary>
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public void resetAll()
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{
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ImgRow1 = 0;
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ImgCol1 = 0;
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ImgRow2 = imageHeight;
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ImgCol2 = imageWidth;
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zoomWndFactor = (double)imageWidth / viewPort.Width;
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System.Drawing.Rectangle rect = viewPort.ImagePart;
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rect.X = (int)ImgCol1;
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rect.Y = (int)ImgRow1;
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rect.Width = (int)imageWidth;
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rect.Height = (int)imageHeight;
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viewPort.ImagePart = rect;
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if (roiManager != null)
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roiManager.reset();
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}
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public void resetWindow()
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{
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ImgRow1 = 0;
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ImgCol1 = 0;
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ImgRow2 = imageHeight;
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ImgCol2 = imageWidth;
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zoomWndFactor = (double)imageWidth / viewPort.Width;
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System.Drawing.Rectangle rect = viewPort.ImagePart;
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rect.X = (int)ImgCol1;
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rect.Y = (int)ImgRow1;
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rect.Width = (int)imageWidth;
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rect.Height = (int)imageHeight;
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viewPort.ImagePart = rect;
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}
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/*************************************************************************/
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/* Event handling for mouse */
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/*************************************************************************/
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private void mouseDown(object sender, HalconDotNet.HMouseEventArgs e)
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{
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mousePressed = true;
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int activeROIidx = -1;
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double scale;
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if (roiManager != null && (dispROI == MODE_INCLUDE_ROI))
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{
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activeROIidx = roiManager.mouseDownAction(e.X, e.Y);
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}
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if (activeROIidx == -1)
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{
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switch (stateView)
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{
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case MODE_VIEW_MOVE:
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startX = e.X;
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startY = e.Y;
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break;
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case MODE_VIEW_ZOOM:
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if (e.Button == System.Windows.Forms.MouseButtons.Left)
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scale = 0.9;
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else
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scale = 1 / 0.9;
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zoomImage(e.X, e.Y, scale);
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break;
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case MODE_VIEW_NONE:
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break;
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case MODE_VIEW_ZOOMWINDOW:
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activateZoomWindow((int)e.X, (int)e.Y);
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break;
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default:
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break;
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}
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}
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//end of if
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}
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/*******************************************************************/
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private void activateZoomWindow(int X, int Y)
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{
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double posX, posY;
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int zoomZone;
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if (ZoomWindow != null)
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ZoomWindow.Dispose();
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HOperatorSet.SetSystem("border_width", 10);
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ZoomWindow = new HWindow();
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posX = ((X - ImgCol1) / (ImgCol2 - ImgCol1)) * viewPort.Width;
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posY = ((Y - ImgRow1) / (ImgRow2 - ImgRow1)) * viewPort.Height;
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zoomZone = (int)((zoomWndSize / 2) * zoomWndFactor * zoomAddOn);
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ZoomWindow.OpenWindow((int)posY - (zoomWndSize / 2), (int)posX - (zoomWndSize / 2),
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zoomWndSize, zoomWndSize,
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viewPort.HalconID, "visible", "");
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ZoomWindow.SetPart(Y - zoomZone, X - zoomZone, Y + zoomZone, X + zoomZone);
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repaint(ZoomWindow);
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ZoomWindow.SetColor("black");
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}
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/*******************************************************************/
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private void mouseUp(object sender, HalconDotNet.HMouseEventArgs e)
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{
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mousePressed = false;
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if (roiManager != null
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&& (roiManager.activeROIidx != -1)
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&& (dispROI == MODE_INCLUDE_ROI))
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{
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roiManager.NotifyRCObserver(ROIController.EVENT_UPDATE_ROI);
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}
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else if (stateView == MODE_VIEW_ZOOMWINDOW)
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{
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ZoomWindow.Dispose();
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}
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}
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/*******************************************************************/
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private void mouseMoved(object sender, HalconDotNet.HMouseEventArgs e)
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{
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double motionX, motionY;
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double posX, posY;
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double zoomZone;
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if (!mousePressed)
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return;
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if (roiManager != null && (roiManager.activeROIidx != -1) && (dispROI == MODE_INCLUDE_ROI))
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{
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roiManager.mouseMoveAction(e.X, e.Y);
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}
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else if (stateView == MODE_VIEW_MOVE)
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{
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motionX = ((e.X - startX));
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motionY = ((e.Y - startY));
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if (((int)motionX != 0) || ((int)motionY != 0))
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{
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moveImage(motionX, motionY);
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startX = e.X - motionX;
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startY = e.Y - motionY;
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}
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}
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else if (stateView == MODE_VIEW_ZOOMWINDOW)
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{
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HSystem.SetSystem("flush_graphic", "false");
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ZoomWindow.ClearWindow();
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posX = ((e.X - ImgCol1) / (ImgCol2 - ImgCol1)) * viewPort.Width;
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posY = ((e.Y - ImgRow1) / (ImgRow2 - ImgRow1)) * viewPort.Height;
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zoomZone = (zoomWndSize / 2) * zoomWndFactor * zoomAddOn;
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ZoomWindow.SetWindowExtents((int)posY - (zoomWndSize / 2),
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(int)posX - (zoomWndSize / 2),
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zoomWndSize, zoomWndSize);
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ZoomWindow.SetPart((int)(e.Y - zoomZone), (int)(e.X - zoomZone),
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(int)(e.Y + zoomZone), (int)(e.X + zoomZone));
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repaint(ZoomWindow);
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HSystem.SetSystem("flush_graphic", "true");
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ZoomWindow.DispLine(-100.0, -100.0, -100.0, -100.0);
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}
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}
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/// <summary>
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/// To initialize the move function using a GUI component, the HWndCtrl
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/// first needs to know the range supplied by the GUI component.
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/// For the x direction it is specified by xRange, which is
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/// calculated as follows: GuiComponentX.Max()-GuiComponentX.Min().
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/// The starting value of the GUI component has to be supplied
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/// by the parameter Init
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/// </summary>
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public void setGUICompRangeX(int[] xRange, int Init)
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{
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int cRangeX;
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CompRangeX = xRange;
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cRangeX = xRange[1] - xRange[0];
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prevCompX = Init;
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stepSizeX = ((double)imageWidth / cRangeX) * (imageWidth / windowWidth);
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}
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/// <summary>
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/// To initialize the move function using a GUI component, the HWndCtrl
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/// first needs to know the range supplied by the GUI component.
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/// For the y direction it is specified by yRange, which is
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/// calculated as follows: GuiComponentY.Max()-GuiComponentY.Min().
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/// The starting value of the GUI component has to be supplied
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/// by the parameter Init
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/// </summary>
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public void setGUICompRangeY(int[] yRange, int Init)
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{
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int cRangeY;
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CompRangeY = yRange;
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cRangeY = yRange[1] - yRange[0];
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prevCompY = Init;
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stepSizeY = ((double)imageHeight / cRangeY) * (imageHeight / windowHeight);
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}
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|
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/// <summary>
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/// Resets to the starting value of the GUI component.
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/// </summary>
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public void resetGUIInitValues(int xVal, int yVal)
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{
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prevCompX = xVal;
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prevCompY = yVal;
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}
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/// <summary>
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/// Moves the image by the value valX supplied by the GUI component
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/// </summary>
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public void moveXByGUIHandle(int valX)
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{
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double motionX;
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motionX = (valX - prevCompX) * stepSizeX;
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if (motionX == 0)
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return;
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moveImage(motionX, 0.0);
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prevCompX = valX;
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}
|
|
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/// <summary>
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/// Moves the image by the value valY supplied by the GUI component
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/// </summary>
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public void moveYByGUIHandle(int valY)
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{
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double motionY;
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motionY = (valY - prevCompY) * stepSizeY;
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if (motionY == 0)
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return;
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moveImage(0.0, motionY);
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prevCompY = valY;
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}
|
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/// <summary>
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/// Zooms the image by the value valF supplied by the GUI component
|
/// </summary>
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public void zoomByGUIHandle(double valF)
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{
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double x, y, scale;
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double prevScaleC;
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|
|
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x = (ImgCol1 + (ImgCol2 - ImgCol1) / 2);
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y = (ImgRow1 + (ImgRow2 - ImgRow1) / 2);
|
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prevScaleC = (double)((ImgCol2 - ImgCol1) / imageWidth);
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scale = ((double)1.0 / prevScaleC * (100.0 / valF));
|
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zoomImage(x, y, scale);
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}
|
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/// <summary>
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/// Triggers a repaint of the HALCON window
|
/// </summary>
|
public void repaint()
|
{
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repaint(viewPort.HalconWindow);
|
}
|
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/// <summary>
|
/// Repaints the HALCON window 'window'
|
/// </summary>
|
public void repaint(HalconDotNet.HWindow window)
|
{
|
int count = HObjList.Count;
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HObjectEntry entry;
|
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HSystem.SetSystem("flush_graphic", "false");
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window.ClearWindow();
|
mGC.stateOfSettings.Clear();
|
|
for (int i=0; i < count; i++)
|
{
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entry = ((HObjectEntry)HObjList[i]);
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mGC.applyContext(window, entry.gContext);
|
window.DispObj(entry.HObj);
|
}
|
|
addInfoDelegate();
|
|
if (roiManager != null && (dispROI == MODE_INCLUDE_ROI))
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roiManager.paintData(window);
|
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HSystem.SetSystem("flush_graphic", "true");
|
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window.SetColor("black");
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window.DispLine(-100.0, -100.0, -101.0, -101.0);
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}
|
|
|
|
/********************************************************************/
|
/* GRAPHICSSTACK */
|
/********************************************************************/
|
|
/// <summary>
|
/// Adds an iconic object to the graphics stack similar to the way
|
/// it is defined for the HDevelop graphics stack.
|
/// </summary>
|
/// <param name="obj">Iconic object</param>
|
public void addIconicVar(HObject obj)
|
{
|
HObjectEntry entry;
|
|
if (obj == null)
|
return;
|
|
if (obj is HImage)
|
{
|
double r, c;
|
int h, w, area;
|
string s;
|
|
area = ((HImage)obj).GetDomain().AreaCenter(out r, out c);
|
((HImage)obj).GetImagePointer1(out s, out w, out h);
|
|
if (area == (w * h))
|
{
|
clearList();
|
|
if ((h != imageHeight) || (w != imageWidth))
|
{
|
imageHeight = h;
|
imageWidth = w;
|
zoomWndFactor = (double)imageWidth / viewPort.Width;
|
setImagePart(0, 0, h, w);
|
}
|
}//if
|
}//if
|
|
entry = new HObjectEntry(obj, mGC.copyContextList());
|
|
HObjList.Add(entry);
|
|
if (HObjList.Count > MAXNUMOBJLIST)
|
HObjList.RemoveAt(1);
|
}
|
|
|
/// <summary>
|
/// Clears all entries from the graphics stack
|
/// </summary>
|
public void clearList()
|
{
|
HObjList.Clear();
|
}
|
|
/// <summary>
|
/// Returns the number of items on the graphics stack
|
/// </summary>
|
public int getListCount()
|
{
|
return HObjList.Count;
|
}
|
|
/// <summary>
|
/// Changes the current graphical context by setting the specified mode
|
/// (constant starting by GC_*) to the specified value.
|
/// </summary>
|
/// <param name="mode">
|
/// Constant that is provided by the class GraphicsContext
|
/// and describes the mode that has to be changed,
|
/// e.g., GraphicsContext.GC_COLOR
|
/// </param>
|
/// <param name="val">
|
/// Value, provided as a string,
|
/// the mode is to be changed to, e.g., "blue"
|
/// </param>
|
public void changeGraphicSettings(string mode, string val)
|
{
|
switch (mode)
|
{
|
case GraphicsContext.GC_COLOR:
|
mGC.setColorAttribute(val);
|
break;
|
case GraphicsContext.GC_DRAWMODE:
|
mGC.setDrawModeAttribute(val);
|
break;
|
case GraphicsContext.GC_LUT:
|
mGC.setLutAttribute(val);
|
break;
|
case GraphicsContext.GC_PAINT:
|
mGC.setPaintAttribute(val);
|
break;
|
case GraphicsContext.GC_SHAPE:
|
mGC.setShapeAttribute(val);
|
break;
|
default:
|
break;
|
}
|
}
|
|
/// <summary>
|
/// Changes the current graphical context by setting the specified mode
|
/// (constant starting by GC_*) to the specified value.
|
/// </summary>
|
/// <param name="mode">
|
/// Constant that is provided by the class GraphicsContext
|
/// and describes the mode that has to be changed,
|
/// e.g., GraphicsContext.GC_LINEWIDTH
|
/// </param>
|
/// <param name="val">
|
/// Value, provided as an integer, the mode is to be changed to,
|
/// e.g., 5
|
/// </param>
|
public void changeGraphicSettings(string mode, int val)
|
{
|
switch (mode)
|
{
|
case GraphicsContext.GC_COLORED:
|
mGC.setColoredAttribute(val);
|
break;
|
case GraphicsContext.GC_LINEWIDTH:
|
mGC.setLineWidthAttribute(val);
|
break;
|
default:
|
break;
|
}
|
}
|
|
/// <summary>
|
/// Changes the current graphical context by setting the specified mode
|
/// (constant starting by GC_*) to the specified value.
|
/// </summary>
|
/// <param name="mode">
|
/// Constant that is provided by the class GraphicsContext
|
/// and describes the mode that has to be changed,
|
/// e.g., GraphicsContext.GC_LINESTYLE
|
/// </param>
|
/// <param name="val">
|
/// Value, provided as an HTuple instance, the mode is
|
/// to be changed to, e.g., new HTuple(new int[]{2,2})
|
/// </param>
|
public void changeGraphicSettings(string mode, HTuple val)
|
{
|
switch (mode)
|
{
|
case GraphicsContext.GC_LINESTYLE:
|
mGC.setLineStyleAttribute(val);
|
break;
|
default:
|
break;
|
}
|
}
|
|
/// <summary>
|
/// Clears all entries from the graphical context list
|
/// </summary>
|
public void clearGraphicContext()
|
{
|
mGC.clear();
|
}
|
|
/// <summary>
|
/// Returns a clone of the graphical context list (hashtable)
|
/// </summary>
|
public Hashtable getGraphicContext()
|
{
|
return mGC.copyContextList();
|
}
|
|
}//end of class
|
}//end of namespace
|
