Merge pull request #27 from WorksOfBarry/dspf

Start of Display File edit support

Author: worksofliam

Forms/DragLabel.cs

@@ -0,0 +1,96 @@
+using IBMiCmd.LanguageTools;
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace IBMiCmd.Forms
+{
+    class DragLabel : Label
+    {
+        public DragLabel()
+        {
+            MouseDown += labelWorker_MouseDown;
+            MouseMove += labelWorker_MouseMove;
+            MouseUp += labelWorker_MouseUp;
+        }
+
+        bool clicked = false;
+        int iOldX;
+        int iOldY;
+        int iClickX;
+        int iClickY;
+
+        void labelWorker_MouseDown(object sender, MouseEventArgs e)
+        {
+            Label labelWorker = (Label)sender;
+            if (e.Button == MouseButtons.Left)
+            {
+                Point p = ConvertFromChildToForm(e.X, e.Y, labelWorker);
+                iOldX = p.X;
+                iOldY = p.Y;
+                iClickX = e.X;
+                iClickY = e.Y;
+                clicked = true;
+            }
+        }
+
+        void labelWorker_MouseMove(object sender, MouseEventArgs e)
+        {
+            Label labelWorker = (Label)sender;
+            if (clicked)
+            {
+                Point p = new Point(); // New Coordinate
+                p.X = e.X + labelWorker.Left;
+                p.Y = e.Y + labelWorker.Top;
+                labelWorker.Left = p.X - iClickX;
+                labelWorker.Top = p.Y - iClickY;
+            }
+        }
+
+        void labelWorker_MouseUp(object sender, MouseEventArgs e)
+        {
+            Label labelWorker = (Label)sender;
+            Point p = new Point(); // New Coordinate
+            p.X = e.X + labelWorker.Left;
+            p.Y = e.Y + labelWorker.Top;
+            
+            FieldInfo fieldInfo = (FieldInfo)labelWorker.Tag;
+            fieldInfo.Position = PointToDSPF(PointToDSPFView(new Point(p.X - iClickX, p.Y - iClickY)), fieldInfo.Length);
+            labelWorker.Location = dspfEdit.DSPFtoUILoc(fieldInfo.Position);
+
+            clicked = false;
+        }
+
+        private Point ConvertFromChildToForm(int x, int y, Control control)
+        {
+            Point p = new Point(x, y);
+            control.Location = p;
+            return p;
+        }
+
+        private static Point PointToDSPFView(Point Location)
+        {
+            int x = (((int)Location.X) / 9) * 9;
+            int y = (((int)Location.Y) / 19) * 19;
+
+            return new Point(x, y);
+        }
+
+        private static Point PointToDSPF(Point Location, int fieldLen)
+        {
+            int x = (((int)Location.X) / 9)+1;
+            int y = (((int)Location.Y) / 19)+1;
+
+            if (x < 1) x = 1;
+            if ((x + fieldLen) > dspfEdit.WindowSize.Width) x = dspfEdit.WindowSize.Width - fieldLen;
+            if (y < 1) y = 1;
+            if (y > dspfEdit.WindowSize.Height) y = dspfEdit.WindowSize.Height;
+
+            return new Point(x, y);
+        }
+    }
+}