public bool CorrectCornerPosition(CGPoint point, CornerView corner)
{
CGRect rect = WholeImageRectInView();
point.X -= corner.CenterOffset.X;
point.Y -= corner.CenterOffset.Y;
point.X = Math.Max((float)rect.Location.X, Math.Min((float)point.X, (float)(rect.Location.X + rect.Size.Width)));
point.Y = Math.Max((float)rect.Location.Y, Math.Min((float)point.Y, (float)(rect.Location.Y + rect.Size.Height)));
point = ConvertFromViewToImagePt(point);
{
CGPoint[] points = new CGPoint[4];
GetCornersCoordinates(points, true);
for (int i = 0; i < 4; ++i)
{
if (corner == corners[i])
{
points[i] = point;
break;
}
}
}
point = ConvertFromViewToImagePt(point);
point.X += corner.CenterOffset.X;
point.Y += corner.CenterOffset.Y;
return(true);
}
public CornerView NearestCornerView(CGPoint point)
{
const float distToSelect = 100.0f * 100.0f;
CornerView nearest = null;
float distMin = float.MaxValue;
for (int i = 0; i < 4; ++i)
{
CornerView c = corners[i];
CGPoint pt = c.Center;
float dx = (float)(pt.X - point.X);
float dy = (float)(pt.Y - point.Y);
float dist = dx * dx + dy * dy;
if (dist < distMin)
{
distMin = dist;
nearest = c;
}
}
return(distMin >= distToSelect ? null : nearest);
}
public CGPoint GetCornerPoint(CornerView corner)
{
CGPoint pt = corner.Center;
pt.X -= corners[(uint)CornerType.LeftTop].CenterOffset.X;
pt.Y -= corners[(uint)CornerType.LeftTop].CenterOffset.Y;
return(pt);
}
private CornerView CreateCorner(CornerType type, string normalImageName, string selectedImageName)
{
CornerView cv = new CornerView(
new UIImage(normalImageName),
new UIImage(selectedImageName)
);
cv.CornerType = type;
corners[(uint)type] = cv;
AddSubview(cv);
return(cv);
}
public override void TouchesBegan(NSSet touches, UIEvent evt)
{
CGPoint pt = (touches.AnyObject as UITouch).LocationInView(this);
startLocation = pt;
UIView view = this.Superview;
view.BringSubviewToFront(this);
view.ViewWithTag(kPageEditorNavBar).Hidden = true;
view.ViewWithTag(kPageEditorToolBar).Hidden = true;
AnimateZoomInAtPoint(startLocation);
corverDragged = NearestCornerView(startLocation);
if (corverDragged != null)
{
corverDragged.PushCenter = corverDragged.Center;
corverDragged.IsSelected = true;
}
}