|
public SetParameter ( |
||
| parameter | ||
| value | object | |
| return | void | |
static UIElement CreateBoolWidget(Effect effect, EffectParameter parameter)
{
var checkbox = new CheckBox()
{
IsChecked = (bool)effect.GetParameter(parameter)
};
checkbox.Checked += (sender, e) => { effect.SetParameter(parameter, true); };
checkbox.Unchecked += (sender, e) => { effect.SetParameter(parameter, false); };
return(checkbox);
}
static UIElement CreateFloatWidget(Effect effect, EffectParameter parameter)
{
float valueScale = (parameter.Max - parameter.Min) / 100;
var slider = new Slider()
{
Value = ((float)effect.GetParameter(parameter) - parameter.Min) / valueScale
};
slider.ValueChanged += (sender, e) =>
{
effect.SetParameter(parameter, parameter.Min + (float)e.NewValue * valueScale);
};
return(slider);
}
static UIElement CreateIntWidget(Effect effect, EffectParameter parameter)
{
var slider = new Slider()
{
Minimum = parameter.Min,
Maximum = parameter.Max,
Value = (int)effect.GetParameter(parameter)
};
slider.ValueChanged += (sender, e) =>
{
effect.SetParameter(parameter, (int)e.NewValue);
};
return(slider);
}
static UIElement CreateColorWidget(Effect effect, EffectParameter parameter)
{
var colorProperties = typeof(Colors).GetRuntimeProperties();
var colorNames = colorProperties.Select(p => p.Name).ToList();
var colorValues = colorProperties.Select(p => p.GetValue(null)).ToList();
var combo = new ComboBox()
{
ItemsSource = colorNames,
SelectedIndex = colorValues.IndexOf(effect.GetParameter(parameter))
};
combo.SelectionChanged += (sender, e) =>
{
effect.SetParameter(parameter, colorValues[combo.SelectedIndex]);
};
return(combo);
}
static void CreateRectWidgets(Effect effect, EffectParameter parameter, List <UIElement> widgets, List <string> widgetNames)
{
Photo photo = effect.Parent.Parent;
// Read the current rectangle (infinity means not initialized).
var initialValue = (Rect)effect.GetParameter(parameter);
if (double.IsInfinity(initialValue.Width))
{
initialValue = photo.SourceBitmap.Bounds;
}
var topLeft = new Vector2((float)initialValue.Left, (float)initialValue.Top);
var bottomRight = new Vector2((float)initialValue.Right, (float)initialValue.Bottom);
// Create four sliders.
for (int i = 0; i < 4; i++)
{
int whichSlider = i;
var slider = new Slider();
// Initialize the slider position.
switch (whichSlider)
{
case 0:
slider.Value = topLeft.X * 100 / photo.Size.X;
break;
case 1:
slider.Value = bottomRight.X * 100 / photo.Size.X;
break;
case 2:
slider.Value = topLeft.Y * 100 / photo.Size.Y;
break;
case 3:
slider.Value = bottomRight.Y * 100 / photo.Size.Y;
break;
}
// Respond to slider changes.
slider.ValueChanged += (sender, e) =>
{
switch (whichSlider)
{
case 0:
topLeft.X = (float)e.NewValue * photo.Size.X / 100;
break;
case 1:
bottomRight.X = (float)e.NewValue * photo.Size.X / 100;
break;
case 2:
topLeft.Y = (float)e.NewValue * photo.Size.Y / 100;
break;
case 3:
bottomRight.Y = (float)e.NewValue * photo.Size.Y / 100;
break;
}
// Make sure the rectangle never goes zero or negative.
var tl = Vector2.Min(topLeft, photo.Size - Vector2.One);
var br = Vector2.Max(bottomRight, tl + Vector2.One);
effect.SetParameter(parameter, new Rect(tl.ToPoint(), br.ToPoint()));
};
widgets.Add(slider);
}
widgetNames.AddRange(new string[] { "Left", "Right", "Top", "Bottom" });
}