/// <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(); }
/// <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; } }