Example #1
0
        /// <summary>
        /// Add new object to draw area.
        /// Function is called when user left-clicks draw area,
        /// and one of ToolObject-derived tools is active.
        /// </summary>
        /// <param name="drawArea"></param>
        /// <param name="o"></param>
        protected void AddNewObject(DrawArea drawArea, DrawObject o)
        {
            drawArea.GraphicsList.UnselectAll();

            o.Selected = true;
            drawArea.GraphicsList.Add(o);

            drawArea.Capture = true;
            drawArea.Refresh();

            drawArea.SetDirty();
        }
Example #2
0
 /// <summary>
 /// Insert object to specified place.
 /// Used for Undo.
 /// </summary>
 public void Insert(int index, DrawObject obj)
 {
     if ( index >= 0  && index < graphicsList.Count )
     {
         graphicsList.Insert(index, obj);
     }
 }
Example #3
0
 /// <summary>
 /// Replace object in specified place.
 /// Used for Undo.
 /// </summary>
 public void Replace(int index, DrawObject obj)
 {
     if (index >= 0 && index < graphicsList.Count)
     {
         graphicsList.RemoveAt(index);
         graphicsList.Insert(index, obj);
     }
 }
Example #4
0
 public void Add(DrawObject obj)
 {
     // insert to the top of z-order
     graphicsList.Insert(0, obj);
 }
Example #5
0
 /// <summary>
 /// Copy fields from this instance to cloned instance drawObject.
 /// Called from Clone functions of derived classes.
 /// </summary>
 protected void FillDrawObjectFields(DrawObject drawObject)
 {
     drawObject.selected = this.selected;
     drawObject.color = this.color;
     drawObject.penWidth = this.penWidth;
     drawObject.ID = this.ID;
 }
Example #6
0
 // Create this command with DrawObject instance added to the list
 public CommandAdd(DrawObject drawObject) : base()
 {
     // Keep copy of added object
     this.drawObject = drawObject.Clone();
 }
Example #7
0
        /// <summary>
        /// Left mouse button is pressed
        /// </summary>
        /// <param name="drawArea"></param>
        /// <param name="e"></param>
        public override void OnMouseDown(DrawArea drawArea, MouseEventArgs e)
        {
            commandChangeState = null;
            wasMove = false;

            selectMode = SelectionMode.None;
            Point point = new Point(e.X, e.Y);

            // Test for resizing (only if control is selected, cursor is on the handle)
            foreach (DrawObject o in drawArea.GraphicsList.Selection)
            {
                int handleNumber = o.HitTest(point);

                if (handleNumber > 0)
                {
                    selectMode = SelectionMode.Size;

                    // keep resized object in class member
                    resizedObject = o;
                    resizedObjectHandle = handleNumber;

                    // Since we want to resize only one object, unselect all other objects
                    drawArea.GraphicsList.UnselectAll();
                    o.Selected = true;

                    commandChangeState = new CommandChangeState(drawArea.GraphicsList);

                    break;
                }
            }

            // Test for move (cursor is on the object)
            if ( selectMode == SelectionMode.None )
            {
                int n1 = drawArea.GraphicsList.Count;
                DrawObject o = null;

                for ( int i = 0; i < n1; i++ )
                {
                    if ( drawArea.GraphicsList[i].HitTest(point) == 0 )
                    {
                        o = drawArea.GraphicsList[i];
                        break;
                    }
                }

                if ( o != null )
                {
                    selectMode = SelectionMode.Move;

                    // Unselect all if Ctrl is not pressed and clicked object is not selected yet
                    if ( ( Control.ModifierKeys & Keys.Control ) == 0  && !o.Selected )
                        drawArea.GraphicsList.UnselectAll();

                    // Select clicked object
                    o.Selected = true;

                    commandChangeState = new CommandChangeState(drawArea.GraphicsList);

                    drawArea.Cursor = Cursors.SizeAll;
                }
            }

            // Net selection
            if ( selectMode == SelectionMode.None )
            {
                // click on background
                if ( ( Control.ModifierKeys & Keys.Control ) == 0 )
                    drawArea.GraphicsList.UnselectAll();

                selectMode = SelectionMode.NetSelection;

            }

            lastPoint.X = e.X;
            lastPoint.Y = e.Y;
            startPoint.X = e.X;
            startPoint.Y = e.Y;

            drawArea.Capture = true;

            drawArea.Refresh();

            if ( selectMode == SelectionMode.NetSelection )
            {
                // Draw selection rectangle in initial position
                ControlPaint.DrawReversibleFrame(
                    drawArea.RectangleToScreen(DrawRectangle.GetNormalizedRectangle(startPoint, lastPoint)),
                    Color.Black,
                    FrameStyle.Dashed);
            }
        }
Example #8
0
        /// <summary>
        /// Right mouse button is released
        /// </summary>
        /// <param name="drawArea"></param>
        /// <param name="e"></param>
        public override void OnMouseUp(DrawArea drawArea, MouseEventArgs e)
        {
            if ( selectMode == SelectionMode.NetSelection )
            {
                // Remove old selection rectangle
                ControlPaint.DrawReversibleFrame(
                    drawArea.RectangleToScreen(DrawRectangle.GetNormalizedRectangle(startPoint, lastPoint)),
                    Color.Black,
                    FrameStyle.Dashed);

                // Make group selection
                drawArea.GraphicsList.SelectInRectangle(
                    DrawRectangle.GetNormalizedRectangle(startPoint, lastPoint));

                selectMode = SelectionMode.None;
            }

            if ( resizedObject != null )
            {
                // after resizing
                resizedObject.Normalize();
                resizedObject = null;
            }

            drawArea.Capture = false;
            drawArea.Refresh();

            if ( commandChangeState != null  && wasMove )
            {
                // Keep state after moving/resizing and add command to history
                commandChangeState.NewState(drawArea.GraphicsList);
                drawArea.AddCommandToHistory(commandChangeState);
                commandChangeState = null;
            }
        }