/// <summary>
/// runs when mouse is moved over the canvas
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void paper_MouseMove(object sender, MouseEventArgs e)
{
if (lmbDown) // only run if left mouse down
{
switch (CurrentTool)
{
case Tools.ToolType.CreateElement:
if (fe != null)
{
fe.X = e.GetPosition(paper).X;
fe.Y = e.GetPosition(paper).Y;
fe.RenderTransform = fe.GetTransform();
}
break;
case Tools.ToolType.Move:
if (result != null)
{
fe.X = e.GetPosition(paper).X;
fe.Y = e.GetPosition(paper).Y;
fe.RenderTransform = fe.GetTransform();
}
break;
case Tools.ToolType.Erase:
Point pt = e.GetPosition((UIElement)sender);
result = VisualTreeHelper.HitTest(paper, pt);
if (result != null)
{
if (result.VisualHit.GetType() != typeof(Canvas))
{
fe = (FestivalElement)result.VisualHit;
paper.Children.Remove(fe);
}
}
break;
case Tools.ToolType.ColourPick:
break;
case Tools.ToolType.ReColour:
break;
case Tools.ToolType.Select:
break;
}
}
}
/// <summary>
/// updates the preview element
/// </summary>
void UpdatePreview()
{
canvasPreview.Children.Clear();
FestivalElement previewFE = GetFEType(CurrentFEType, colour, 2, 2);
previewFE.X = canvasPreview.ActualWidth / 2;
previewFE.Y = canvasPreview.ActualHeight / 2;
previewFE.RenderTransform = previewFE.GetTransform();
previewFE.IsPreview = true;
canvasPreview.Children.Add(previewFE);
}
// methods which run from mouse activity
#region Mouse Methods
private void paper_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
mWindow.Focus();
Point pt = e.GetPosition((UIElement)sender);
result = VisualTreeHelper.HitTest(paper, pt);
// checks which tool is in use
// tools do what they are called
switch (CurrentTool)
{
case Tools.ToolType.CreateElement:
fe = GetFEType(CurrentFEType, colour, origScaleX, origScaleY);
fe.X = e.GetPosition(paper).X;
fe.Y = e.GetPosition(paper).Y;
fe.Angle = 0;
fe.RenderTransform = fe.GetTransform();
paper.Children.Add(fe);
break;
case Tools.ToolType.Move:
if (result != null)
{
if (result.VisualHit.GetType() != typeof(Canvas))
{
fe = (FestivalElement)result.VisualHit;
}
}
break;
case Tools.ToolType.Erase:
if (result != null)
{
if (result.VisualHit.GetType() != typeof(Canvas))
{
fe = (FestivalElement)result.VisualHit;
paper.Children.Remove(fe);
}
}
break;
case Tools.ToolType.ColourPick:
if (result != null)
{
if (result.VisualHit.GetType() != typeof(Canvas))
{
// will get element colour
fe = (FestivalElement)result.VisualHit;
Color c = (fe.BGBrush as SolidColorBrush).Color;
colourChange = true;
sliderAlpha.Value = c.A;
sliderRed.Value = c.R;
sliderGreen.Value = c.G;
sliderBlue.Value = c.B;
colourChange = false;
GetColourFromSlider();
}
else
{
// will get background colour
Color c = (paper.Background as SolidColorBrush).Color;
colourChange = true;
sliderAlpha.Value = c.A;
sliderRed.Value = c.R;
sliderGreen.Value = c.G;
sliderBlue.Value = c.B;
colourChange = false;
GetColourFromSlider();
}
}
break;
case Tools.ToolType.ReColour:
if (result != null)
{
if (result.VisualHit.GetType() != typeof(Canvas))
{
fe = (FestivalElement)result.VisualHit;
fe.BGBrush = colour;
fe.InvalidateVisual();
}
else
{
paper.Background = colour;
}
}
break;
case Tools.ToolType.Select:
if (result != null)
{
if (result.VisualHit.GetType() != typeof(Canvas))
{
if (selectedFE != null)
{
selectedFE.OnDeSelection();
}
selectedFE = (FestivalElement)result.VisualHit;
selectedFE.OnSelection();
if (gridSelectionTools.Visibility != Visibility.Visible)
{
gridSelectionTools.Visibility = Visibility.Visible;
UpdateElementList();
}
GetSelectionData();
}
}
break;
}
lmbDown = true;
}