// RectangleF _viewBox;
public WmfGraphics (BinaryWriter tw, RectangleF viewBox)
{
// _viewBox = viewBox;
fw = tw;
_fontMetrics = new WmfGraphicsFontMetrics ();
SetColor (Colors.Black);
_states.Push (_state);
}
public SvgGraphics (TextWriter tw, RectangleF viewBox)
{
_viewBox = viewBox;
_tw = tw;
IncludeXmlAndDoctype = true;
SetColor (Colors.Black);
_states.Push (_state);
}
public static RectangleF Union (RectangleF a, RectangleF b)
{
var left = Math.Min (a.Left, b.Left);
var top = Math.Min (a.Top, b.Top);
return new RectangleF (left,
top,
Math.Max (a.Right, b.Right) - left,
Math.Max (a.Bottom, b.Bottom) - top);
}
void Initialize ()
{
var bounds = Bounds;
visibleArea = bounds.ToRectangleF ();
canvas = new Canvas (bounds.ToRectangleF ()) {
AutoresizingMask = UIViewAutoresizing.FlexibleDimensions,
};
BackgroundColor = Colors.White;
scrollContent = new Canvas (new RectangleF (PointF.Empty, contentSize)) {
Opaque = false,
BackgroundColor = UIColor.Clear.GetColor (),
};
scrollContent.TouchBegan += HandleTouchBegan;
scrollContent.TouchMoved += HandleTouchMoved;
scrollContent.TouchEnded += HandleTouchEnded;
scrollContent.TouchCancelled += HandleTouchCancelled;
scroll = new Scroller (bounds) {
AutoresizingMask = UIViewAutoresizing.FlexibleDimensions,
MinimumZoomScale = 1/4.0f,
MaximumZoomScale = 4.0f,
AlwaysBounceVertical = true,
AlwaysBounceHorizontal = true,
BackgroundColor = UIColor.Clear,
};
scroll.AddSubview (scrollContent);
scroll.ContentSize = contentSize.ToSizeF ();
TouchEnabled = true;
TouchDelayed = true;
scroll.ViewForZoomingInScrollView = delegate {
return scrollContent;
};
scroll.ZoomingEnded += delegate {
};
scroll.Scrolled += HandleScrolled;
AddSubviews (canvas, scroll);
//
// Prime the visible area
//
HandleScrolled (scroll, EventArgs.Empty);
//
// Ready to Draw
//
SetVisibleArea ();
canvas.Drawing += HandleDrawing;
}
public CanvasDrawingEventArgs (IGraphics graphics, RectangleF visibleArea)
{
Graphics = graphics;
VisibleArea = visibleArea;
}
public static void DrawOval(this IGraphics g, RectangleF r, float w)
{
g.DrawOval (r.Left, r.Top, r.Width, r.Height, w);
}
public static List<RectangleF> GetIntersections (this List<RectangleF> boxes, RectangleF box)
{
var r = new List<RectangleF> ();
foreach (var b in boxes) {
if (b.IntersectsWith (box)) {
r.Add (b);
}
}
return r;
}
public static void FillRoundedRect(this IGraphics g, RectangleF r, float radius)
{
g.FillRoundedRect (r.Left, r.Top, r.Width, r.Height, radius);
}
public static void FillOval(this IGraphics g, RectangleF r)
{
g.FillOval (r.Left, r.Top, r.Width, r.Height);
}
public View (RectangleF frame)
: base (frame.ToRectangleF ())
{
}
public static void DrawRoundedRect(this IGraphics g, RectangleF r, float radius, float w)
{
g.DrawRoundedRect (r.Left, r.Top, r.Width, r.Height, radius, w);
}
public void Invalidate (RectangleF frame)
{
SetNeedsDisplayInRect (frame.ToRectangleF ());
}
public bool IntersectsWith(RectangleF rect)
{
return !((Left >= rect.Right) || (Right <= rect.Left) ||
(Top >= rect.Bottom) || (Bottom <= rect.Top));
}
public ScrollableCanvas (RectangleF frame)
: base (frame)
{
Initialize ();
}
public void Invalidate (RectangleF frame)
{
canvas.Invalidate ();
}
public void SetVisibleArea ()
{
var s = (float)scroll.ZoomScale;
var va = scroll.Bounds.ToRectangleF ();
va.X /= s;
va.Y /= s;
va.Width /= s;
va.Height /= s;
visibleArea = va;
canvas.Invalidate ();
}
public WmfGraphics (Stream s, RectangleF viewBox)
: this(new BinaryWriter (s, System.Text.Encoding.UTF8), viewBox)
{
}
public Canvas (RectangleF frame)
: base (frame)
{
Initialize ();
}
public static void AddBottomRoundedRect (this CGContext c, RectangleF b, float r)
{
c.MoveTo (b.Left, b.Top + r);
c.AddLineToPoint (b.Left, b.Bottom - r);
c.AddArc (b.Left + r, b.Bottom - r, r, (float)(Math.PI), (float)(Math.PI / 2), true);
c.AddLineToPoint (b.Right - r, b.Bottom);
c.AddArc (b.Right - r, b.Bottom - r, r, (float)(-3 * Math.PI / 2), (float)(0), true);
c.AddLineToPoint (b.Right, b.Top);
c.AddLineToPoint (b.Left, b.Top);
}
public void Invalidate (RectangleF dirtyRect)
{
Invalidate (dirtyRect.ToRect ());
}
public static void DrawString(this IGraphics g, string s, RectangleF p, Font f, LineBreakMode lineBreak, TextAlignment align)
{
g.SetFont (f);
g.DrawString (s, p.Left, p.Top, p.Width, p.Height, lineBreak, align);
}
string AddGradient (Gradient g, RectangleF bounds)
{
var url = "url(#grad" + grads.Count + ")";
grads.Add (new GradientAndBounds { Gradient = g, Bounds = bounds });
return url;
}
