Ejemplo n.º 1
0
        /// <summary>
        /// Left mouse button is pressed
        /// </summary>
        /// <param name="drawArea"></param>
        /// <param name="e"></param>
        public override void OnMouseDown(XnaToolUser drawArea, MouseEventArgs e)
        {
            _selectMode = SelectionMode.None;
            Point point = new Point(drawArea.MyMouseX, drawArea.MyMouseY);

            // Test for resizing (only if control is selected, cursor is on the handle)
            int n = drawArea.GraphicsList.SelectionCount;

            for (int i = 0; i < n; i++)
            {
                XnaDrawObject o            = drawArea.GraphicsList.GetSelectedObject(i);
                int           handleNumber = o.HitTest(point);
                bool          hitOnOutline = o.HitOnCircumferance;

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

                    // keep resized object in class members
                    _resizedObject       = o;
                    _resizedObjectHandle = handleNumber;

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

                    break;
                }

                if (hitOnOutline && (n == 1))     //only one item is selected
                {
                    _selectMode = SelectionMode.Size;
                    o.MouseClickOnBorder();
                    o.Selected = true;
                }
            }

            // Test for move (cursor is on the object)
            if (_selectMode == SelectionMode.None)
            {
                int           n1 = drawArea.GraphicsList.Count;
                XnaDrawObject 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;

                    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;
                drawArea.DrawNetRectangle = true;
            }

            _lastPoint.X  = drawArea.MyMouseX;
            _lastPoint.Y  = drawArea.MyMouseY;
            _startPoint.X = drawArea.MyMouseX;
            _startPoint.Y = drawArea.MyMouseY;

            drawArea.Capture      = true;
            drawArea.NetRectangle = XnaDrawRectangle.GetNormalizedRectangle(_startPoint, _lastPoint);

            drawArea.Refresh();
        }
Ejemplo n.º 2
0
        /// <summary>
        /// Mouse is moved.
        /// None button is pressed, ot left button is pressed.
        /// </summary>
        /// <param name="drawArea"></param>
        /// <param name="e"></param>
        public override void OnMouseMove(XnaToolUser drawArea, MouseEventArgs e)
        {
            var point = new Point(drawArea.MyMouseX, drawArea.MyMouseY);

            // set cursor when mouse button is not pressed
            if (e.Button == MouseButtons.None)
            {
                Cursor cursor = null;

                for (int i = 0; i < drawArea.GraphicsList.Count; i++)
                {
                    int n = drawArea.GraphicsList[i].HitTest(point);

                    if (n > 0)
                    {
                        cursor = drawArea.GraphicsList[i].GetHandleCursor(n);
                        break;
                    }
                    if (drawArea.GraphicsList[i].HitOnCircumferance)
                    {
                        cursor = drawArea.GraphicsList[i].GetOutlineCursor(n);
                        break;
                    }
                }

                if (cursor == null)
                {
                    cursor = Cursors.Default;
                }

                drawArea.Cursor = cursor;

                return;
            }

            if (e.Button != MouseButtons.Left)
            {
                return;
            }

            // Left button is pressed

            // Find difference between previous and current position
            float dx = drawArea.MyMouseX - _lastPoint.X;
            float dy = drawArea.MyMouseY - _lastPoint.Y;

            _lastPoint.X = drawArea.MyMouseX;
            _lastPoint.Y = drawArea.MyMouseY;

            // resize
            if (_selectMode == SelectionMode.Size)
            {
                if (_resizedObject != null)
                {
                    _resizedObject.MoveHandleTo(point, _resizedObjectHandle);
                    drawArea.SetDirty();
                    drawArea.Refresh();
                }
            }

            // move
            if (_selectMode == SelectionMode.Move)
            {
                int n = drawArea.GraphicsList.SelectionCount;

                for (int i = 0; i < n; i++)
                {
                    drawArea.GraphicsList.GetSelectedObject(i).Move(dx, dy);
                }

                drawArea.Cursor = Cursors.SizeAll;
                drawArea.SetDirty();
                drawArea.Refresh();
            }

            if (_selectMode == SelectionMode.NetSelection)
            {
                drawArea.NetRectangle = XnaDrawRectangle.GetNormalizedRectangle(_startPoint, _lastPoint);
                drawArea.Refresh();
                return;
            }
        }