v1.1

Author: hopto-dot

Google Translate Canvas/Canvas.cs

@@ -77,6 +77,43 @@ public void clearCanvas()
         {
             canvasGraphics.Clear(Color.FromArgb(222, 222, 222));
         }
+
+        public void undoLastLine()
+        {
+            try
+            {
+                Form1.lines.RemoveAt(Form1.lines.Count - 1);
+            }
+            catch { return; }
+
+            canvasGraphics.Clear(Color.FromArgb(222, 222, 222));
+
+            foreach (Form1.line stroke in Form1.lines)
+            {
+                drawLine(stroke.xCoords, stroke.yCoords);
+            }
+            if (Form1.lines.Count != 0)
+            {
+                Program.form1.googleRequest();
+            }
+        }
+
+        public void drawLine(List<int> Xs, List<int> Ys)
+        {
+            int currentX, currentY;
+            for (int i = 0; i < Xs.Count - 1; i += 1)
+            {
+                previousX = Xs[i]; previousY = Ys[i];
+                currentX = Xs[i + 1]; currentY = Ys[i + 1];
+
+                if (currentX > previousX) { previousX += -1; }
+                else if (currentX < previousX) { previousX += 1; }
+                if (currentY > previousY) { previousY += -1; }
+                else if (currentY < previousY) { previousY += 1; }
+
+                canvasGraphics.DrawLine(canvasPen, previousX, previousY, currentX, currentY);
+            }
+        }
         private void Canvas_Resize(object sender, EventArgs e)
         {
             canvasGraphics = CreateGraphics();

Google Translate Canvas/Form1.Designer.cs

@@ -23,7 +23,7 @@ public class line
             public List<int> xCoords = new List<int>();
             public List<int> yCoords = new List<int>();
         }
-        public List<line> lines = new List<line>();
+        public static List<line> lines = new List<line>();
 
         public void addLine()
         {
@@ -46,7 +46,6 @@ public void addYCoordinate(int Y)
 
         private void btnClear_Click(object sender, EventArgs e)
         {
-            lines.Clear();
             canvas1.clearCanvas();
         }
 
@@ -87,8 +86,6 @@ public void googleRequest()
 
                     var content = response.Content.ReadAsStringAsync();
 
-                    flpSuggestions.Invoke(new MethodInvoker(delegate { lblOutput.Text = content.Result; }));
-
                     string[] suggestions = getSuggestionsList(content.Result);
                     if (suggestions == null) { flpSuggestions.Invoke(new MethodInvoker(delegate { tbxInput.Text += " "; return; })); }
 
@@ -182,5 +179,10 @@ string createCoordinateString()
             }
 
         }
+
+        private void button1_Click(object sender, EventArgs e)
+        {
+            canvas1.undoLastLine();
+        }
     }
 }