// This will draw a temporary shape as a "cursor" wherever the user moves
// the mouse. This cursor is the same size as the actual shape that will
// be drawn in HandleMouseDown(), so that the user can know where they are
// going to be drawing if they click the mouse.
private void HandleMouseMoved(object sender, MouseEventArgs e)
{
// We don't want to actually draw a shape here, but instead to draw a temporary cursor.
// So we're going to make a new DrawLineAction or DrawCircleAction, etc., just like in
// HandleMouseDown, but instead of adding it to the list of actions, we're going to set it
// as the Cursor of the DrawingModel. We'll let the DrawingModel take care of the details of
// drawing a cursor (a temporary image) instead of drawing a permanent shape.
if (_isDrawing)
{
if (DrawLinesButton.Checked)
{
_canvasModel.Cursor = new DrawLineAction(_cursorPen, _startPoint.X, _startPoint.Y, e.Location.X,
e.Location.Y);
}
else if (DrawCirclesButton.Checked)
{
int radius = MathHelpers.GetRadius(_startPoint, new Point(e.Location.X, e.Location.Y));
if (radius > 0)
{
_canvasModel.Cursor = new DrawCircleAction(_cursorPen, _startPoint.X, _startPoint.Y, radius);
}
}
}
// _lastKnownX = e.Location.X;
// _lastKnownY = e.Location.Y;
}
private IDrawAction GetAction(MouseEventArgs e, Pen pen)
{
if (DrawLinesButton.Checked)
{
return(new DrawLineAction(pen, _startPoint.X, _startPoint.Y, e.Location.X, e.Location.Y));
}
if (DrawCirclesButton.Checked)
{
int radius = MathHelpers.GetRadius(_startPoint, new Point(e.Location.X, e.Location.Y));
if (radius == 0)
{
return(null);
}
return(new DrawCircleAction(pen, _startPoint.X, _startPoint.Y, radius));
}
if (DrawRectanglesButton.Checked)
{
return(new DrawRectangleAction(pen, _startPoint.X, _startPoint.Y, e.Location.X, e.Location.Y));
}
if (DrawXesButton.Checked)
{
return(new DrawXesAction(pen, _startPoint.X, e.Location.X, _startPoint.Y, e.Location.Y));
}
return(null);
}
private void HandleMouseUp(object sender, MouseEventArgs e)
{
// Here's where we actually draw the shape. We also hide the cursor (by setting it to
// null) and turn off the "_isDrawing" flag value.
if (DrawLinesButton.Checked)
{
_actions.Add(new DrawLineAction(_pen, _startPoint.X, _startPoint.Y, e.Location.X, e.Location.Y));
}
else if (DrawCirclesButton.Checked)
{
int radius = MathHelpers.GetRadius(_startPoint, new Point(e.Location.X, e.Location.Y));
if (radius > 0)
{
_actions.Add(new DrawCircleAction(_pen, _startPoint.X, _startPoint.Y, radius));
}
}
_canvasModel.Cursor = null;
_isDrawing = false;
}
public void DrawSomethingFrom(Point start, Point end, bool isCursor)
{
if (DrawCirclesButton.Checked)
{
// Draw a circle whose center is start, and whose outside passes through end
_canvasModel.DrawCircle(_pen, start.X, start.Y, MathHelpers.GetRadius(start, end), isCursor);
}
else if (DrawXesButton.Checked)
{
_canvasModel.DrawLine(_pen, start.X, start.Y, end.X, end.Y, isCursor);
_canvasModel.DrawLine(_pen, start.X, end.Y, end.X, start.Y, isCursor);
}
else if (DrawRectanglesButton.Checked)
{
_canvasModel.DrawLine(_pen, start.X, start.Y, end.X, start.Y, isCursor);
_canvasModel.DrawLine(_pen, end.X, start.Y, end.X, end.Y, isCursor);
_canvasModel.DrawLine(_pen, end.X, end.Y, start.X, end.Y, isCursor);
_canvasModel.DrawLine(_pen, start.X, end.Y, start.X, start.Y, isCursor);
}
else
{
_canvasModel.DrawLine(_pen, start.X, start.Y, end.X, end.Y, isCursor);
}
}
//should be able to pass the entire object created from xml file
private IDrawAction GetActionFromSavedSession(SessionData drawObject)
{
// ARBG in a 32 bit integer representing the ARBG values
// unable to capture the name for all the colors - use arbg values
_color = Color.FromArgb(drawObject.PenColor_ARBG);
_fillcolor = Color.FromArgb(drawObject.BrushColor_ARBG);
//get line width
_line_width = drawObject.LineWidth;
//get type pen
if (drawObject.IsFill)
{
_drawingBrush = new SolidBrush(_fillcolor);
}
else
{
_drawingPen = new Pen(_color, _line_width);
}
//get start and end points
_startPoint.X = drawObject.StartX;
_startPoint.Y = drawObject.StartY;
_endPoint.X = drawObject.EndX;
_endPoint.Y = drawObject.EndY;
if (drawObject.NameofDrawingAction.Contains("DrawLineAction"))
{
return(new DrawLineAction(_drawingPen, _startPoint.X, _startPoint.Y, _endPoint.X, _endPoint.Y));
}
if (drawObject.NameofDrawingAction.Contains("DrawCircle") || drawObject.NameofDrawingAction.Contains("Oval"))
{
//shift key not saved state - no long depressed when action completed so it's not saved as true
if (drawObject.IsShift)
{
if (drawObject.IsFill)
{
return(new DrawOvalAction(_drawingBrush, _startPoint.X, _startPoint.Y, _endPoint.X, _endPoint.Y,
true));
}
else
{
return(new DrawOvalAction(_drawingPen, _startPoint.X, _startPoint.Y, _endPoint.X, _endPoint.Y));
}
}
else
{
if (drawObject.IsFill)
{
int radius = MathHelpers.GetRadius(_startPoint, new Point(_endPoint.X, _endPoint.Y));
if (radius == 0)
{
return(null);
}
return(new DrawCircleAction(_drawingBrush, _startPoint.X, _startPoint.Y, radius, true));
}
else
{
int radius = MathHelpers.GetRadius(_startPoint, new Point(_endPoint.X, _endPoint.Y));
if (radius == 0)
{
return(null);
}
return(new DrawCircleAction(_drawingPen, _startPoint.X, _startPoint.Y, radius));
}
}
}
if (drawObject.NameofDrawingAction.Contains("Rectangle"))
{
if (drawObject.IsFill)
{
if (drawObject.IsShift)
{
//MessageBox.Show("shift key");
int diffx = Math.Abs(_startPoint.X - _endPoint.X);
int samexy = _startPoint.Y + diffx;
return(new DrawRectangleAction(_drawingBrush, _startPoint.X, _startPoint.Y, _endPoint.X, samexy,
true));
}
return(new DrawRectangleAction(_drawingBrush, _startPoint.X, _startPoint.Y, _endPoint.X, _endPoint.Y,
true));
}
else
{
if (drawObject.IsShift)
{
//MessageBox.Show("shift key");
int diffx = Math.Abs(_startPoint.X - _endPoint.X);
int samexy = _startPoint.Y + diffx;
return(new DrawRectangleAction(_drawingPen, _startPoint.X, _startPoint.Y, _endPoint.X, samexy));
}
return(new DrawRectangleAction(_drawingPen, _startPoint.X, _startPoint.Y, _endPoint.X, _endPoint.Y));
}
}
if (drawObject.NameofDrawingAction.Contains("DrawX"))
{
return(new DrawXAction(_drawingPen, _startPoint.X, _startPoint.Y, _endPoint.X, _endPoint.Y));
}
return(null);
}
private IDrawAction GetAction(MouseEventArgs e, Pen pen)
{
//takes mouse arg e and converts to point / adjusts all points to next 5
Sanp2Grid(e);
if (DrawLinesButton.Checked)
{
return(new DrawLineAction(pen, _startPoint.X, _startPoint.Y, _endPoint.X, _endPoint.Y));
}
if (DrawCirclesButton.Checked)
{
if (Control.ModifierKeys == Keys.Shift)
{
_shiftKeyFlag = true;
if (FillcheckBox.Checked)
{
return(new DrawOvalAction(_drawingBrush, _startPoint.X, _startPoint.Y, _endPoint.X, _endPoint.Y,
true));
}
else
{
return(new DrawOvalAction(pen, _startPoint.X, _startPoint.Y, _endPoint.X, _endPoint.Y));
}
}
else
{
if (FillcheckBox.Checked)
{
int radius = MathHelpers.GetRadius(_startPoint, new Point(_endPoint.X, _endPoint.Y));
if (radius == 0)
{
return(null);
}
return(new DrawCircleAction(_drawingBrush, _startPoint.X, _startPoint.Y, radius, true));
}
else
{
int radius = MathHelpers.GetRadius(_startPoint, new Point(_endPoint.X, _endPoint.Y));
if (radius == 0)
{
return(null);
}
return(new DrawCircleAction(pen, _startPoint.X, _startPoint.Y, radius));
}
}
}
if (DrawRectanglesButton.Checked)
{
if (FillcheckBox.Checked)
{
if (Control.ModifierKeys == Keys.Shift)
{
_shiftKeyFlag = true;
//MessageBox.Show("shift key");
int diffx = Math.Abs(_startPoint.X - _endPoint.X);
int samexy = _startPoint.Y + diffx;
return(new DrawRectangleAction(_drawingBrush, _startPoint.X, _startPoint.Y, _endPoint.X, samexy,
true));
}
return(new DrawRectangleAction(_drawingBrush, _startPoint.X, _startPoint.Y, _endPoint.X, _endPoint.Y,
true));
}
else
{
if (Control.ModifierKeys == Keys.Shift)
{
_shiftKeyFlag = true;
//MessageBox.Show("shift key");
int diffx = Math.Abs(_startPoint.X - _endPoint.X);
int samexy = _startPoint.Y + diffx;
return(new DrawRectangleAction(pen, _startPoint.X, _startPoint.Y, _endPoint.X, samexy));
}
return(new DrawRectangleAction(pen, _startPoint.X, _startPoint.Y, _endPoint.X, _endPoint.Y));
}
}
if (DrawXesButton.Checked)
{
return(new DrawXAction(pen, _startPoint.X, _startPoint.Y, _endPoint.X, _endPoint.Y));
}
return(null);
}
