// This will draw a circle on the canvas wherever the user clicks the mouse.
private void HandleMouseDown(object sender, MouseEventArgs e)
{
// Since we want to actually draw a circle here, we're going to make a new DrawCircleAction and
// add it to the list of actions. We get the center of the circle from the mouse event "e",
// set the radius to 20, and use our standard pen "_pen" to draw the circle.
_actions.Add(new DrawCircleAction(_pen, e.Location.X, e.Location.Y, 20));
}
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;
}
private void HandleMouseUp(object sender, MouseEventArgs e)
{
if (_isDrawing)
{
// Here's where we actually draw the shape.
var drawAction = GetAction(e, _drawingPen);
// dsh capture all possible values needed to recreate objects
//how to sync with redo and undo - possibly add an ID to both list
// don't need to pass everthing if it's already defined like color etc
//StoreValuesInObjectforPersistance(drawAction);
if (drawAction != null)
{
_actions.Add(drawAction);
StoreValuesInObjectforPersistance(drawAction);
}
}
// We also hide the cursor (by setting it to null).
_canvasModel.Cursor = null;
_isDrawing = false;
}
private void HandleMouseUp(object sender, MouseEventArgs e)
{
if (_isDrawing)
{
// Here's where we actually draw the shape.
var drawAction = GetAction(e, _drawingPen);
if (drawAction != null)
{
_actions.Add(drawAction);
}
}
// We also hide the cursor (by setting it to null).
_canvasModel.Cursor = null;
_isDrawing = false;
}
