private double GetProportionsFactor(ImageCroppingProportions proportions, double defaultValue)
{
switch (proportions)
{
case ImageCroppingProportions.Original:
return(m_imageSize.Width / m_imageSize.Height);
case ImageCroppingProportions.Widescreen:
return(16.0 / 9.0);
case ImageCroppingProportions.Square:
return(1.0);
case ImageCroppingProportions.ThreeOverTwo:
return(3.0 / 2.0);
case ImageCroppingProportions.FourOverThree:
return(4.0 / 3.0);
case ImageCroppingProportions.FourOverSix:
return(4.0 / 6.0);
case ImageCroppingProportions.FiveOverSeven:
return(5.0 / 7.0);
case ImageCroppingProportions.EightOverTen:
return(8.0 / 10.0);
default:
return(defaultValue);
}
}
public static string Convert(ImageCroppingProportions proportions)
{
switch (proportions)
{
case ImageCroppingProportions.Custom:
return("Custom");
case ImageCroppingProportions.Original:
return(Strings.Android.CropOriginal);
case ImageCroppingProportions.Square:
return(Strings.Android.CropSquare);
// Portrait
case ImageCroppingProportions.TwoOverThree:
return("2:3");
case ImageCroppingProportions.ThreeOverFive:
return("3:5");
case ImageCroppingProportions.ThreeOverFour:
return("3:4");
case ImageCroppingProportions.FourOverFive:
return("4:5");
case ImageCroppingProportions.FiveOverSeven:
return("5:7");
case ImageCroppingProportions.NineOverSixteen:
return("9:16");
// Landscape
case ImageCroppingProportions.ThreeOverTwo:
return("3:2");
case ImageCroppingProportions.FiveOverThree:
return("5:3");
case ImageCroppingProportions.FourOverThree:
return("4:3");
case ImageCroppingProportions.FiveOverFour:
return("5:4");
case ImageCroppingProportions.SevenOverFive:
return("7:5");
case ImageCroppingProportions.SixteenOverNine:
return("16:9");
default:
return(proportions.ToString());
}
}
private double GetProportionsFactor(ImageCroppingProportions proportions, double defaultValue)
{
switch (proportions)
{
case ImageCroppingProportions.Original:
return(m_imageSize.Width / m_imageSize.Height);
case ImageCroppingProportions.Square:
return(1.0);
// Portrait
case ImageCroppingProportions.TwoOverThree:
return(2.0 / 3.0);
case ImageCroppingProportions.ThreeOverFive:
return(3.0 / 5.0);
case ImageCroppingProportions.ThreeOverFour:
return(3.0 / 4.0);
case ImageCroppingProportions.FourOverFive:
return(4.0 / 5.0);
case ImageCroppingProportions.FiveOverSeven:
return(5.0 / 7.0);
case ImageCroppingProportions.NineOverSixteen:
return(9.0 / 16.0);
// Landscape
case ImageCroppingProportions.ThreeOverTwo:
return(3.0 / 2.0);
case ImageCroppingProportions.FiveOverThree:
return(5.0 / 3.0);
case ImageCroppingProportions.FourOverThree:
return(4.0 / 3.0);
case ImageCroppingProportions.FiveOverFour:
return(5.0 / 4.0);
case ImageCroppingProportions.SevenOverFive:
return(7.0 / 5.0);
case ImageCroppingProportions.SixteenOverNine:
return(16.0 / 9.0);
default:
return(defaultValue);
}
}
private void OnProportionsChanged(ImageCroppingProportions oldValue, ImageCroppingProportions newValue)
{
var cropScale = m_cropRectangle.Width / m_cropRectangle.Height;
var proportionalCropScale = GetProportionsFactor(Proportions, cropScale);
if (cropScale < proportionalCropScale)
{
var cropHeight = m_cropRectangle.Width / proportionalCropScale;
m_cropRectangle.Y = Clamp(m_cropRectangle.Y + (m_cropRectangle.Height - cropHeight) / 2.0, 0.0, m_imageSize.Height - cropHeight);
m_cropRectangle.Height = cropHeight;
}
else
{
var cropWidth = m_cropRectangle.Height * proportionalCropScale;
m_cropRectangle.X = Clamp(m_cropRectangle.X + (m_cropRectangle.Width - cropWidth) / 2.0, 0.0, m_imageSize.Width - cropWidth);
m_cropRectangle.Width = cropWidth;
}
UpdateCropRectangle(m_cropRectangle, true);
}
