private static RotateMode GetRotateMode(PictureOrientation pictureOrientation)
{
switch (pictureOrientation)
{
case PictureOrientation.Rotated90:
return(RotateMode.Rotate270);
case PictureOrientation.Rotated180:
return(RotateMode.Rotate180);
case PictureOrientation.Rotated270:
return(RotateMode.Rotate90);
default:
return(RotateMode.None);
}
}
/// <summary>
/// Sets the orientation of the device.
/// </summary>
/// <param name='requiredOrientation'>
/// The desired orientation.
/// </param>
private void SetOrientation(PictureOrientation requiredOrientation)
{
if (this.orientationSetter == null)
{
this.orientationSetter = new Selector("setOrientation:");
}
bool changeResolution = false;
UIInterfaceOrientation newOrientation = UIInterfaceOrientation.Portrait;
if (requiredOrientation == PictureOrientation.Landscape)
{
if (UIDevice.CurrentDevice.Orientation != UIDeviceOrientation.LandscapeLeft &&
UIDevice.CurrentDevice.Orientation != UIDeviceOrientation.LandscapeRight)
{
newOrientation = UIInterfaceOrientation.LandscapeLeft;
changeResolution = true;
}
}
else
{
if (UIDevice.CurrentDevice.Orientation != UIDeviceOrientation.Portrait &&
UIDevice.CurrentDevice.Orientation != UIDeviceOrientation.PortraitUpsideDown)
{
newOrientation = UIInterfaceOrientation.Portrait;
changeResolution = true;
}
}
if (changeResolution)
{
Messaging.void_objc_msgSend_int(UIDevice.CurrentDevice.Handle, this.orientationSetter.Handle, (int)newOrientation);
}
}
/// <summary>
/// Start painting a new image
/// </summary>
/// <param name='orientation'>
/// The orientation of the new image
/// </param>
private void NewImage(PictureOrientation orientation)
{
// If the device is still mid turn then the reported width and height may be wrong - hence we are using
// Math.Max and Math.Min to ensure we get the right size. [Actually I've delayed the turning until we are
// ready to display the app (inside call to EditImage) so it wouldn't have turned yet anyway]
ImageStateData imageStateData = null;
int deviceWidth = (int)UIScreen.MainScreen.Bounds.Width * this.deviceScale;
int deviceHeight = (int)UIScreen.MainScreen.Bounds.Height * this.deviceScale;
if (orientation == PictureOrientation.Landscape)
{
imageStateData = new ImageStateData(Math.Max(deviceHeight, deviceWidth), Math.Min(deviceHeight, deviceWidth), UndoRedoBufferSize);
}
else
{
imageStateData = new ImageStateData(Math.Min(deviceHeight, deviceWidth), Math.Max(deviceHeight, deviceWidth), UndoRedoBufferSize);
}
this.EditImage(Guid.NewGuid(), imageStateData);
}
