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IosView.cs
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IosView.cs
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using System;
using Eto.Drawing;
using Eto.Forms;
using Eto.Platform.iOS.Drawing;
using SD = System.Drawing;
using MonoTouch.Foundation;
using MonoTouch.UIKit;
using Eto.Platform.Mac.Forms;
namespace Eto.Platform.iOS.Forms
{
public interface IIosView : IMacControlHandler
{
Size PositionOffset { get; }
UIViewController Controller { get; }
}
public abstract class IosView<TControl, TWidget> : MacObject<TControl, TWidget>, IControl, IIosView
where TControl: UIResponder
where TWidget: Control
{
SizeF? naturalSize;
UIViewController controller;
public UIViewController Controller
{
get { return controller ?? (controller = CreateController()); }
protected set { controller = value; }
}
protected virtual UIViewController CreateController()
{
return new RotatableViewController { View = ContainerControl };
}
public virtual UIView ContentControl { get { return ContainerControl; } }
public virtual UIView EventControl { get { return ContainerControl; } }
public abstract UIView ContainerControl { get; }
public virtual bool AutoSize { get; protected set; }
public SizeF? PreferredSize { get; set; }
public virtual Size MinimumSize { get; set; }
public virtual Size? MaximumSize { get; set; }
public virtual Size Size
{
get { return ContainerControl.Frame.Size.ToEtoSize(); }
set
{
var oldSize = GetPreferredSize(SizeF.MaxValue);
this.PreferredSize = value;
var newSize = ContainerControl.Frame.Size;
if (value.Width >= 0)
newSize.Width = value.Width;
if (value.Height >= 0)
newSize.Height = value.Height;
ContainerControl.SetFrameSize(newSize);
AutoSize = value.Width == -1 && value.Height == -1;
CreateTracking();
LayoutIfNeeded(oldSize);
}
}
protected virtual bool LayoutIfNeeded(SizeF? oldPreferredSize = null, bool force = false)
{
naturalSize = null;
if (Widget.Loaded)
{
var oldSize = oldPreferredSize ?? ContainerControl.Frame.Size.ToEto();
var newSize = GetPreferredSize(SizeF.MaxValue);
if (newSize != oldSize || force)
{
var container = Widget.Parent.GetMacContainer();
if (container != null)
container.LayoutParent(true);
return true;
}
}
return false;
}
protected virtual SizeF GetNaturalSize(SizeF availableSize)
{
if (naturalSize != null)
return naturalSize.Value;
var control = Control as UIView;
if (control != null)
{
SD.SizeF? size = (Widget.Loaded) ? (SD.SizeF?)control.Frame.Size : null;
control.SizeToFit();
naturalSize = control.Frame.Size.ToEto();
if (size != null)
control.SetFrameSize(size.Value);
return naturalSize.Value;
}
return Size.Empty;
}
public virtual SizeF GetPreferredSize(SizeF availableSize)
{
var size = GetNaturalSize(availableSize);
if (!AutoSize && PreferredSize != null)
{
var preferredSize = PreferredSize.Value;
if (preferredSize.Width >= 0)
size.Width = preferredSize.Width;
if (preferredSize.Height >= 0)
size.Height = preferredSize.Height;
}
if (MinimumSize != Size.Empty)
size = SizeF.Max(size, MinimumSize);
if (MaximumSize != null)
size = SizeF.Min(size, MaximumSize.Value);
return size;
}
protected IosView()
{
this.AutoSize = true;
}
public virtual Size PositionOffset { get { return Size.Empty; } }
void CreateTracking()
{
/*
* use TOUCHES
if (!mouseMove)
return;
if (tracking != null)
Control.RemoveTrackingArea (tracking);
mouseDelegate = new MouseDelegate{ Widget = this.Widget, View = Control };
tracking = new NSTrackingArea (new SD.RectangleF (new SD.PointF (0, 0), Control.Frame.Size),
NSTrackingAreaOptions.ActiveAlways | NSTrackingAreaOptions.MouseMoved | NSTrackingAreaOptions.EnabledDuringMouseDrag,
mouseDelegate,
new NSDictionary ());
Control.AddTrackingArea (tracking);
*/
}
public virtual void SetParent(Container parent)
{
}
static readonly NSString frameKey = new NSString("frame");
public override void AttachEvent(string handler)
{
switch (handler)
{
case Eto.Forms.Control.MouseDownEvent:
case Eto.Forms.Control.MouseUpEvent:
case Eto.Forms.Control.MouseDoubleClickEvent:
case Eto.Forms.Control.MouseEnterEvent:
case Eto.Forms.Control.MouseLeaveEvent:
case Eto.Forms.Control.KeyDownEvent:
case Eto.Forms.Control.GotFocusEvent:
case Eto.Forms.Control.LostFocusEvent:
break;
case Eto.Forms.Control.MouseMoveEvent:
//mouseMove = true;
CreateTracking();
break;
case Eto.Forms.Control.SizeChangedEvent:
this.AddControlObserver(frameKey, e =>
{
var h = e.Handler as IosView<TControl,TWidget>;
h.Widget.OnSizeChanged(EventArgs.Empty);
});
/*UIDevice.CurrentDevice.BeginGeneratingDeviceOrientationNotifications();
this.AddObserver(null, UIDevice.OrientationDidChangeNotification, delegate {
Widget.OnSizeChanged (EventArgs.Empty);
});*/
/*Control.Window.PostsFrameChangedNotifications = true;
this.AddObserver (UIView.UIViewFrameDidChangeNotification, delegate {
Widget.OnSizeChanged (EventArgs.Empty);
});*/
break;
default:
base.AttachEvent(handler);
break;
}
}
public virtual void Invalidate()
{
EventControl.SetNeedsDisplay();
}
public virtual void Invalidate(Rectangle rect)
{
EventControl.SetNeedsDisplayInRect(rect.ToSDRectangleF());
}
public Graphics CreateGraphics()
{
throw new NotSupportedException();
}
public virtual void SuspendLayout()
{
}
public virtual void ResumeLayout()
{
}
public void Focus()
{
Control.BecomeFirstResponder();
}
public virtual Color BackgroundColor
{
get { return ContainerControl.BackgroundColor.ToEto(); }
set { ContainerControl.BackgroundColor = value.ToUI(); }
}
public virtual bool Enabled
{
get { return EventControl.UserInteractionEnabled; }
set { EventControl.UserInteractionEnabled = value; }
}
public bool HasFocus
{
get { return Control.IsFirstResponder; }
}
public bool Visible
{
get { return !ContainerControl.Hidden; }
set { ContainerControl.Hidden = !value; }
}
public virtual Font Font
{
get;
set;
}
public virtual void OnPreLoad(EventArgs e)
{
}
public virtual void OnLoad(EventArgs e)
{
}
public virtual void OnLoadComplete(EventArgs e)
{
}
public virtual void OnUnLoad(EventArgs e)
{
}
public void MapPlatformCommand(string systemAction, Command command)
{
}
public PointF PointFromScreen(PointF point)
{
var sdpoint = point.ToSD();
sdpoint = ContainerControl.ConvertPointFromView(sdpoint, null);
sdpoint.Y = ContainerControl.Frame.Height - sdpoint.Y;
return sdpoint.ToEto();
}
public PointF PointToScreen(PointF point)
{
var sdpoint = point.ToSD();
sdpoint.Y = ContainerControl.Frame.Height - sdpoint.Y;
sdpoint = ContainerControl.ConvertPointToView(sdpoint, null);
return sdpoint.ToEto();
}
public Point Location
{
get { return ContainerControl.Frame.Location.ToEtoPoint(); }
}
}
}