/// <summary>
/// Handles any user input.
/// Collect all gestures made since the last 'update' - stores these ready to be handled by the Canvas for drawing
/// </summary>
private void HandleInput()
{
while (TouchPanel.IsGestureAvailable)
{
// read the next gesture from the queue
GestureSample gesture = TouchPanel.ReadGesture();
TouchType touchType = this.ConvertGestureType(gesture.GestureType);
TouchPointSizeColour touchPoint = new TouchPointSizeColour(
gesture.Position,
touchType,
this.paintToolBox.Color,
this.paintToolBox.Brush);
// First check if this can be handled by the toolbox - if not then we will keep for the canvas
if (this.CheckToolboxCollision(touchPoint) == false)
{
this.CanvasTouchPoints.Add(this.ConvertScreenTouchToCanvasTouch(touchPoint));
}
}
}
/// <summary>
/// Converts the screen touchpoint to a canvas touchpoint - i.e. alters the position of the touch to take into account the position and size
/// of the toolbox
/// </summary>
/// <returns>
/// A TouchPoint in Canvas co-ordinates
/// </returns>
/// <param name='screenTouchPoint' The touch point in screen co-ordinates/>
protected TouchPointSizeColour ConvertScreenTouchToCanvasTouch(TouchPointSizeColour screenTouchPoint)
{
if (this.ToolBox.DockPosition == DockPosition.Top)
{
Vector2 offsetPosition = new Vector2(screenTouchPoint.Position.X, screenTouchPoint.Position.Y - this.ToolBox.ToolboxMinimizedHeight);
return new TouchPointSizeColour(
offsetPosition,
screenTouchPoint.TouchType,
screenTouchPoint.Color,
screenTouchPoint.Size);
}
return screenTouchPoint;
}
