public void Export(string filename, ExportFormat format)
{
this.UnselectAll();
double leftMost = double.MaxValue,
rightMost = 0,
topMost = double.MaxValue,
bottomMost = 0;
Shape leftLayer = new Shape(),
rightLayer = new Shape(),
topLayer = new Shape(),
bottomLayer = new Shape();
foreach(Shape l in this)
{
if(l.Position.X + l.Boundaries.Width / 2 > rightMost)
{
rightMost = l.Position.X + l.Boundaries.Width / 2;
rightLayer = l;
}
if(l.Position.X - l.Boundaries.Width / 2 < leftMost)
{
leftMost = l.Position.X - l.Boundaries.Width / 2;
leftLayer = l;
}
if((l.Position.Y - l.Boundaries.Height / 2) < topMost)
{
topMost = l.Position.Y - l.Boundaries.Height / 2;
topLayer = l;
}
if(l.Position.Y + l.Boundaries.Height > bottomMost)
{
bottomMost = l.Position.Y + l.Boundaries.Height;
bottomLayer = l;
}
}
Size size;
//TODO: to keep or not to keep the 1px border, that is the question.
size.Width = (rightLayer.Position.X + rightLayer.Boundaries.Width / 2) -
(leftLayer.Position.X - leftLayer.Boundaries.Width / 2) + 1;
size.Height = (bottomLayer.Position.Y + bottomLayer.Boundaries.Height / 2) -
(topLayer.Position.Y - topLayer.Boundaries.Height / 2) + 1;
Surface surface;
//TODO: each surface is handling the size differently... BUT WHY?
switch(format)
{
case ExportFormat.SVG:
surface = new SvgSurface(filename, size.Width, size.Height);
break;
case ExportFormat.PDF:
surface = new PdfSurface(filename, size.Width, size.Height);
break;
case ExportFormat.PNG:
surface = new ImageSurface(Format.ARGB32,
(int)size.Width,
(int)size.Height);
break;
default:
surface = new SvgSurface(filename, size.Width, size.Height);
break;
}
Cairo.Context c = new Context(surface);
c.Translate(-leftLayer.Position.X + leftLayer.Boundaries.Width / 2,
-(topLayer.Position.Y - topLayer.Boundaries.Height / 2));
this.Draw(c);
if(format == ExportFormat.PNG)
surface.WriteToPng(filename);
surface.Finish();
c.Target.Dispose();
((IDisposable) c).Dispose ();
}
protected virtual void DragData_Received(object o, Gtk.DragDataReceivedArgs args)
{
Shape l = new Shape(args.SelectionData.Text, new Point(args.X, args.Y));
this.shapeManager.Add(l);
this.shapeManager.UnselectAll();
this.shapeManager.Select(l);
Gtk.Drag.Finish(args.Context, true, false, args.Time);
}
public void UnselectAll()
{
this.selected = new Shape();
foreach(Shape l in this)
l.Selected = false;
}
// adds a new shape
public void Add(Shape l)
{
this.shapes.Add(l);
}
public void Select(int x, int y)
{
//TODO: PERF
Shape sel = null;
foreach(Shape l in this)
{
if(PointInRectangle(new Point(x,y),
new Rectangle(new Point((int)(l.Position.X-l.Boundaries.Width/2),
(int)(l.Position.Y-l.Boundaries.Height/2)),
l.Boundaries.Width,
l.Boundaries.Height)))
{
sel = l;
}
}
if(sel != null)
{
this.selected.Selected = false;
sel.Select(new Point(x, y));
this.selected = sel;
}
}
public void Unselect(int index)
{
this.selected = new Shape();
this[index].Selected = false;
}
public void Select(int index)
{
if(index < this.Count && index >= 0)
{
this.selected.Selected = false;
this[index].Selected = true;
this.selected = this[index];
}
}
public void Select(Shape l)
{
this.Select(this.shapes.IndexOf(l));
}
public void Remove(Shape l)
{
this.shapes.Remove(l);
}
public ShapeManager()
{
shapes = new List<Shape>();
this.selected = new Shape();
}
public void MoveUp(Shape l)
{
int index = shapes.IndexOf(l);
if(index >= 0 && index < this.Count-1)
{
this.Remove(l);
this.Insert(++index, l);
}
}
public void MoveDown(Shape l)
{
int index = shapes.IndexOf(l);
if(index > 0)
{
this.Remove(l);
this.Insert(--index, l);
}
}
public void Insert(int index, Shape l)
{
this.shapes.Insert(index, l);
}