private void DrawingArea_MouseDownOrMove(object sender, MouseEventArgs e)
{
if (sender == null || !(sender is Canvas))
{
throw new ArgumentException("expected only Canvas", "sender");
}
var canvas = (Canvas)sender;
double x = e.GetPosition(canvas).X;
double y = e.GetPosition(canvas).Y;
if (!bitmapArray.IsInBounds((int)x, (int)y))
{
return;
}
switch (tool)
{
case Tools.Filtering:
{
// brush border
if (Shape != BrushShapes.Fill)
{
if (DrawingBrush.Visibility != Visibility.Visible)
{
DrawingBrush.Visibility = Visibility.Visible;
}
double half = ((double)sizeOfBrush) / 2;
DrawingBrush.Margin = new Thickness(x - half, y - half, 0, 0);
}
//System.Text.StringBuilder s = new System.Text.StringBuilder();
//s.Append("left click at: ").Append(new Point(x, y));
//s.Append(' ').Append(Filter).Append(' ').Append(Shape);
//s.Append(' ').Append((int)BrushSize.Value);
//MessageBox.Show(s.ToString(), sender.GetType().ToString());
// get filter instance using reflection
var typeName = new StringBuilder("GraphicsManipulation.Filters.").Append(Filter).Append("Filter").ToString();
FilterBrush brush = (FilterBrush)filtersAssembly.CreateInstance(typeName);
if (brush is CustomFilter)
{
((CustomFilter)brush).FilterFunction = latestCustomFilter;
}
brush.ApplyAt(bitmapArray, Shape, new Point(x, y), (int)SizeOfBrush, mask);
if (Shape == BrushShapes.Fill)
{
bitmapArray.RefreshBitmap(Mask.Disabled);
}
else
{
bitmapArray.RefreshBitmap(Mask.Rectangle);
}
} break;
case Tools.Line:
{
int startX = (int)currentLineStart.X;
int startY = (int)currentLineStart.Y;
int endX = (int)x;
int endY = (int)y;
if (currentLineStart != currentLineEnd)
{
int minX = (int)Math.Min(currentLineStart.X, currentLineEnd.X);
int maxX = (int)Math.Max(currentLineStart.X, currentLineEnd.X);
int minY = (int)Math.Min(currentLineStart.Y, currentLineEnd.Y);
int maxY = (int)Math.Max(currentLineStart.Y, currentLineEnd.Y);
bitmapArray.CopyArea(bitmapArrayTemp, minX, minY, maxX, maxY);
}
currentLineEnd = new Point(x, y);
bitmapArray.DrawLine(startX, startY, endX, endY,
lineColor.ScR, lineColor.ScG, lineColor.ScB);
bitmapArray.RefreshBitmap(Mask.Rectangle);
} break;
}
}