private void InputStretchParamsButton_Click(object sender, EventArgs e)
{
// Fire the OnStretchInputsEntered event and provide the stretch parameter input.
if (OnStretchInputsEntered != null)
{
// Create a new StretchParametersEventArgs to contain the input values.
StretchParameters inputStretchParams = null;
// Create the right type of stretch parameters defined by the user.
switch (_stretchParamsType)
{
// - Minimum and maximum RGB values.
case "Min Max RGB":
// Get the models that contains the min/max red, green, and blue picker choices.
RgbValuePickerModel minRgbModel = _minRgbPicker.Model as RgbValuePickerModel;
RgbValuePickerModel maxRgbModel = _maxRgbPicker.Model as RgbValuePickerModel;
// Read min/max RGB values that were chosen.
double[] minValues = { minRgbModel.SelectedRed, minRgbModel.SelectedGreen, minRgbModel.SelectedBlue };
double[] maxValues = { maxRgbModel.SelectedRed, maxRgbModel.SelectedGreen, maxRgbModel.SelectedBlue };
// Create a new MinMaxStretchParameters object with the values.
inputStretchParams = new MinMaxStretchParameters(minValues, maxValues);
break;
// - Minimum and maximum percent clip values.
case "% Clip":
// Read min/max percent values that were chosen.
double minPercent = _minPercentSlider.Value;
double maxPercent = _maxPercentSlider.Value;
inputStretchParams = new PercentClipStretchParameters(minPercent, maxPercent);
break;
// Standard deviation factor.
case "Std Dev":
// Get the model that contains the standard deviation factor choices.
StdDevFactorPickerModel factorModel = _stdDevPicker.Model as StdDevFactorPickerModel;
// Get the selected factor.
double standardDevFactor = factorModel.SelectedFactor;
inputStretchParams = new StandardDeviationStretchParameters(standardDevFactor);
break;
}
// Create a new StretchParametersEventArgs and provide the stretch parameters.
StretchParametersEventArgs inputParamsEventArgs = new StretchParametersEventArgs(inputStretchParams);
// Raise the event with the custom arguments.
OnStretchInputsEntered(sender, inputParamsEventArgs);
}
}
public override void LoadView()
{
View = new UIView()
{
BackgroundColor = UIColor.White
};
UIScrollView scrollView = new UIScrollView();
scrollView.TranslatesAutoresizingMaskIntoConstraints = false;
View.AddSubviews(scrollView);
scrollView.TopAnchor.ConstraintEqualTo(View.TopAnchor).Active = true;
scrollView.LeadingAnchor.ConstraintEqualTo(View.LeadingAnchor).Active = true;
scrollView.TrailingAnchor.ConstraintEqualTo(View.TrailingAnchor).Active = true;
scrollView.BottomAnchor.ConstraintEqualTo(View.BottomAnchor).Active = true;
UIStackView formContainer = new UIStackView();
formContainer.TranslatesAutoresizingMaskIntoConstraints = false;
formContainer.Spacing = 8;
formContainer.LayoutMarginsRelativeArrangement = true;
formContainer.Alignment = UIStackViewAlignment.Center;
formContainer.LayoutMargins = new UIEdgeInsets(8, 8, 8, 8);
formContainer.Axis = UILayoutConstraintAxis.Vertical;
// Add controls here.
UILabel factorLabel = new UILabel();
factorLabel.TranslatesAutoresizingMaskIntoConstraints = false;
factorLabel.Text = "Factor:";
formContainer.AddArrangedSubview(factorLabel);
UIPickerView picker = new UIPickerView();
picker.TranslatesAutoresizingMaskIntoConstraints = false;
_pickerModel = new StdDevFactorPickerModel();
picker.Model = _pickerModel;
picker.HeightAnchor.ConstraintEqualTo(90).Active = true;
formContainer.AddArrangedSubview(picker);
NavigationItem.RightBarButtonItem = new UIBarButtonItem("Apply", UIBarButtonItemStyle.Plain, ApplyButton_Clicked);
scrollView.AddSubview(formContainer);
formContainer.TopAnchor.ConstraintEqualTo(scrollView.TopAnchor).Active = true;
formContainer.LeadingAnchor.ConstraintEqualTo(scrollView.LeadingAnchor).Active = true;
formContainer.TrailingAnchor.ConstraintEqualTo(scrollView.TrailingAnchor).Active = true;
formContainer.BottomAnchor.ConstraintEqualTo(scrollView.BottomAnchor).Active = true;
formContainer.WidthAnchor.ConstraintEqualTo(scrollView.WidthAnchor).Active = true;
}