protected override void OnLayout(bool changed, int l, int t, int r, int b)
{
base.OnLayout(changed, l, t, r, b);
if (!changed)
{
return;
}
var msw = MeasureSpec.MakeMeasureSpec(r - l, MeasureSpecMode.Exactly);
var msh = MeasureSpec.MakeMeasureSpec(b - t, MeasureSpecMode.Exactly);
mainLayout.Measure(msw, msh);
mainLayout.Layout(0, 0, r - l, b - t);
var metrics = Resources.DisplayMetrics;
liveView.SetX(0);
liveView.SetY(0);
imageView.SetX(half_width);
imageView.SetY(0);
exitButton.SetX(half_width);
exitButton.SetY(metrics.HeightPixels - 200);
}
private void SetOrientation()
{
var metrics = new DisplayMetrics();
Display.GetMetrics(metrics);
var moduleWidth = _cameraModule.Width * metrics.Density;
var moduleHeight = _cameraModule.Height * metrics.Density;
var parameters = _camera.GetParameters();
double proportionalPreviewHeight;
switch (Display.Rotation)
{
case SurfaceOrientation.Rotation0:
_cameraModule.IsViewInverted = false;
_cameraModule.IsPortrait = true;
proportionalPreviewHeight = _previewSize.Width * moduleWidth / _previewSize.Height;
_camera.SetDisplayOrientation(90);
parameters.SetRotation(90);
break;
case SurfaceOrientation.Rotation180:
_cameraModule.IsViewInverted = true;
_cameraModule.IsPortrait = true;
proportionalPreviewHeight = _previewSize.Width * moduleWidth / _previewSize.Height;
_camera.SetDisplayOrientation(270);
parameters.SetRotation(270);
break;
case SurfaceOrientation.Rotation90:
_cameraModule.IsViewInverted = false;
_cameraModule.IsPortrait = false;
proportionalPreviewHeight = _previewSize.Height * moduleWidth / _previewSize.Width;
_camera.SetDisplayOrientation(0);
parameters.SetRotation(0);
break;
default:
_cameraModule.IsPortrait = false;
_cameraModule.IsViewInverted = true;
proportionalPreviewHeight = _previewSize.Height * moduleWidth / _previewSize.Width;
_camera.SetDisplayOrientation(180);
parameters.SetRotation(180);
break;
}
_camera.SetParameters(parameters);
var verticalOffset = (moduleHeight - proportionalPreviewHeight) / 2f;
_textureView.SetX(0);
_textureView.SetY((float)verticalOffset);
_cameraModule.PreviewBottomY = _cameraModule.Height - verticalOffset / 2;
_textureView.LayoutParameters = new FrameLayout.LayoutParams((int)Math.Round(moduleWidth),
(int)Math.Round(proportionalPreviewHeight));
}