public ImageDimensions CalculateImageDimensions(GooglePhotosMediaItem image, int maxWidth, int maxHeight)
{
if (maxWidth <= 0)
{
maxWidth = 1024;
}
if (maxHeight <= 0)
{
maxHeight = 768;
}
var imageWidth = Convert.ToInt32(image.MediaMetadata.Width);
var imageHeight = Convert.ToInt32(image.MediaMetadata.Height);
var ratioX = (double)maxWidth / imageWidth;
var ratioY = (double)maxHeight / imageHeight;
var ratio = Math.Min(ratioX, ratioY);
var imageDimensions = new ImageDimensions
{
Height = (int)(imageHeight * ratio),
Width = (int)(imageWidth * ratio)
};
return(imageDimensions);
}
public void CalculateImageDimensions_Returns_CorrectDimensions(int photoWidth, int photoHeight, int maxWidth, int maxHeight, int expectedWidth, int expectedHeight)
{
// Arrange
var photo = new GooglePhotosMediaItem
{
MediaMetadata = new GooglePhotosMediaMetaData
{
Width = photoWidth.ToString(), Height = photoHeight.ToString()
}
};
// Act
var result = PhotoUtilities.CalculateImageDimensions(photo, maxWidth, maxHeight);
// Assert
Assert.That(result.Height, Is.EqualTo(expectedHeight), $"Calculated Height of {photoHeight} does not equal exptected height of {expectedHeight}");
Assert.That(result.Width, Is.EqualTo(expectedWidth), $"Calculated Height of {photoWidth} does not equal exptected height of {expectedWidth}");
}
