public override void Draw(CGRect rect)
{
using (var context = UIGraphics.GetCurrentContext())
{
switch (_maskType)
{
case MaskType.Black:
UIColor.FromWhiteAlpha(0f, 0.5f).SetColor();
context.FillRect(Bounds);
break;
case MaskType.Gradient:
nfloat[] colors = new nfloat[] { 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.75f };
nfloat[] locations = new nfloat[] { 0.0f, 1.0f };
using (var colorSpace = CGColorSpace.CreateDeviceRGB())
{
using (var gradient = new CGGradient(colorSpace, colors, locations))
{
var center = new CGPoint(Bounds.Size.Width / 2, Bounds.Size.Height / 2);
float radius = Math.Min((float)Bounds.Size.Width, (float)Bounds.Size.Height);
context.DrawRadialGradient(gradient, center, 0, center, radius, CGGradientDrawingOptions.DrawsAfterEndLocation);
}
}
break;
}
}
}
public ProgressHUD(CGRect frame) : base(frame)
{
UserInteractionEnabled = false;
BackgroundColor = UIColor.Clear;
Alpha = 0;
AutoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleHeight;
SetOSSpecificLookAndFeel();
}
void PositionHUD(NSNotification notification)
{
nfloat keyboardHeight = 0;
double animationDuration = 0;
UIInterfaceOrientation orientation = UIApplication.SharedApplication.StatusBarOrientation;
bool ignoreOrientation = UIDevice.CurrentDevice.CheckSystemVersion(8, 0);
if (notification != null)
{
var keyboardFrame = UIKeyboard.FrameEndFromNotification(notification);
animationDuration = UIKeyboard.AnimationDurationFromNotification(notification);
if (notification.Name == UIKeyboard.WillShowNotification || notification.Name == UIKeyboard.DidShowNotification)
{
if (ignoreOrientation || IsPortrait(orientation))
{
keyboardHeight = keyboardFrame.Size.Height;
}
else
{
keyboardHeight = keyboardFrame.Size.Width;
}
}
else
{
keyboardHeight = 0;
}
}
else
{
keyboardHeight = VisibleKeyboardHeight;
}
CGRect orientationFrame = this.Window.Bounds;
CGRect statusBarFrame = UIApplication.SharedApplication.StatusBarFrame;
if (!ignoreOrientation && IsLandscape(orientation))
{
orientationFrame.Size = new CGSize(orientationFrame.Size.Height, orientationFrame.Size.Width);
statusBarFrame.Size = new CGSize(statusBarFrame.Size.Height, statusBarFrame.Size.Width);
}
var activeHeight = orientationFrame.Size.Height;
if (keyboardHeight > 0)
{
activeHeight += statusBarFrame.Size.Height * 2;
}
activeHeight -= keyboardHeight;
nfloat posY = (float)Math.Floor(activeHeight * 0.45);
nfloat posX = orientationFrame.Size.Width / 2;
nfloat textHeight = _stringLabel.Frame.Height / 2 + 40;
switch (toastPosition)
{
case ToastPosition.Bottom:
posY = activeHeight - textHeight;
break;
case ToastPosition.Center:
// Already set above
break;
case ToastPosition.Top:
posY = textHeight;
break;
default:
break;
}
CGPoint newCenter;
float rotateAngle;
if (ignoreOrientation)
{
rotateAngle = 0.0f;
newCenter = new CGPoint(posX, posY);
}
else
{
switch (orientation)
{
case UIInterfaceOrientation.PortraitUpsideDown:
rotateAngle = (float)Math.PI;
newCenter = new CGPoint(posX, orientationFrame.Size.Height - posY);
break;
case UIInterfaceOrientation.LandscapeLeft:
rotateAngle = (float)(-Math.PI / 2.0f);
newCenter = new CGPoint(posY, posX);
break;
case UIInterfaceOrientation.LandscapeRight:
rotateAngle = (float)(Math.PI / 2.0f);
newCenter = new CGPoint(orientationFrame.Size.Height - posY, posX);
break;
default: // as UIInterfaceOrientationPortrait
rotateAngle = 0.0f;
newCenter = new CGPoint(posX, posY);
break;
}
}
if (notification != null)
{
UIView.Animate(animationDuration,
0, UIViewAnimationOptions.AllowUserInteraction, delegate
{
MoveToPoint(newCenter, rotateAngle);
}, null);
}
else
{
MoveToPoint(newCenter, rotateAngle);
}
}
void UpdatePosition(bool textOnly = false)
{
nfloat hudWidth = 100f;
nfloat hudHeight = 100f;
nfloat stringWidth = 0f;
nfloat stringHeight = 0f;
nfloat cancelHeight = 0f;
nfloat stringHeightBuffer = 20f;
nfloat stringAndImageHeightBuffer = 80f;
/*if (IsiOS7)
* {
* hudHeight += 50;
* hudWidth += 50f;
* stringHeightBuffer += 50f;
* stringAndImageHeightBuffer += 50f;
* }*/
CGRect labelRect = new CGRect();
string @string = StringLabel.Text;
// False if it's text-only
bool imageUsed = (ImageView.Image != null) || (ImageView.Hidden);
if (textOnly)
{
imageUsed = false;
}
if (imageUsed)
{
hudHeight = stringAndImageHeightBuffer + stringHeight;
}
else
{
hudHeight = (textOnly ? stringHeightBuffer : stringHeightBuffer + 40);
}
if (!string.IsNullOrEmpty(@string))
{
int lineCount = Math.Min(10, @string.Split('\n').Length + 1);
var stringSize = new NSString(@string).StringSize(StringLabel.Font, new CGSize(200, 30 * lineCount));
stringWidth = stringSize.Width;
stringHeight = stringSize.Height;
hudHeight += stringHeight;
if (stringWidth > hudWidth)
{
hudWidth = (float)Math.Ceiling(stringWidth / 2) * 2;
}
float labelRectY = imageUsed ? 66 : 9;
if (hudHeight > 100)
{
labelRect = new CGRect(12, labelRectY, hudWidth, stringHeight);
hudWidth += 24;
}
else
{
hudWidth += 24;
labelRect = new CGRect(0, labelRectY, hudWidth, stringHeight);
}
}
// Adjust for Cancel Button
var cancelRect = new CGRect();
string @cancelCaption = _cancelHud == null ? null : CancelHudButton.Title(UIControlState.Normal);
if (!string.IsNullOrEmpty(@cancelCaption))
{
const int gap = 20;
int lineCount = Math.Min(10, @string.Split('\n').Length + 1);
var cancelSize = new NSString(@cancelCaption).StringSize(StringLabel.Font, new CGSize(200, 30 * lineCount));
cancelHeight = cancelSize.Height;
if (stringWidth > hudWidth)
{
hudWidth = (float)Math.Ceiling(stringWidth / 2) * 2;
}
// Adjust for label
nfloat cancelRectY = 0f;
if (labelRect.Height > 0)
{
cancelRectY = labelRect.Y + labelRect.Height + (nfloat)gap;
}
else
{
cancelRectY = (imageUsed ? 66 : 9);
}
if (hudHeight > 100)
{
cancelRect = new CGRect(12, cancelRectY, hudWidth, cancelHeight);
labelRect = new CGRect(12, labelRect.Y, hudWidth, stringHeight);
hudWidth += 24;
}
else
{
hudWidth += 24;
cancelRect = new CGRect(0, cancelRectY, hudWidth, cancelHeight);
labelRect = new CGRect(0, labelRect.Y, hudWidth, stringHeight);
}
CancelHudButton.Frame = cancelRect;
hudHeight += (cancelRect.Height + gap);
}
HudView.Bounds = new CGRect(0, 0, hudWidth, hudHeight);
if (!string.IsNullOrEmpty(@string))
{
ImageView.Center = new CGPoint(HudView.Bounds.Width / 2, 36);
}
else
{
ImageView.Center = new CGPoint(HudView.Bounds.Width / 2, HudView.Bounds.Height / 2);
}
StringLabel.Hidden = false;
StringLabel.Frame = labelRect;
if (!textOnly)
{
if (!string.IsNullOrEmpty(@string))
{
SpinnerView.Center = new CGPoint((float)Math.Ceiling(HudView.Bounds.Width / 2.0f) + 0.5f, 40.5f);
if (_progress != -1)
{
BackgroundRingLayer.Position = RingLayer.Position = new CGPoint(HudView.Bounds.Width / 2, 36f);
}
}
else
{
SpinnerView.Center = new CGPoint((float)Math.Ceiling(HudView.Bounds.Width / 2.0f) + 0.5f, (float)Math.Ceiling(HudView.Bounds.Height / 2.0f) + 0.5f);
if (_progress != -1)
{
BackgroundRingLayer.Position = RingLayer.Position = new CGPoint(HudView.Bounds.Width / 2, HudView.Bounds.Height / 2.0f + 0.5f);
}
}
}
}
