private void ComboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
if (_img != null)
{
var filter = comboBox1.SelectedItem.ToString();
switch (filter)
{
case "Negative":
_filter = filter.ToLower();
var negative = new NegativeImage(_img);
_newImg = negative.AddNegativeFilter();
ShowImage(_newImg);
break;
case "Grayscale":
_filter = filter.ToLower();
var grayscale = new GrayscaleImage(_img);
_newImg = grayscale.AddGrayscaleFilter();
ShowImage(_newImg);
break;
case "Blurred":
_filter = filter.ToLower();
var blur = new BlurredImage(_img);
_newImg = blur.AddBlurFilter();
ShowImage(_newImg);
break;
}
}
else
{
MessageBox.Show("No image has been selected, please select an image for continuing", "No Image", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private static string Process(string str)
{
var message = "";
var valid = true;
Bitmap img = null;
string path = null;
try
{
path = str;
img = new Bitmap(path);
}
catch (FileNotFoundException)
{
return("Something was wrong with the input, Please try again");
}
catch (IndexOutOfRangeException)
{
return("Something was wrong with the input, Please try again");
}
catch (ArgumentException)
{
return("Something was wrong with the input, Please try again");
}
if (valid && img != null && path != null)
{
if (!FileHandler.CheckPath(path))
{
return("Something was wrong with the input, Please try again");
}
// Check if size is over 400x400 = 160 000
else if (!FileHandler.CheckImageSize(img))
{
return("The image you have entered is too big, Please enter a smaller one");
}
else
{
// Create and save a negative image
var negative = new NegativeImage(img);
var negativeImage = negative.AddNegativeFilter();
negativeImage.Save(FileHandler.GetNewPath(path, "_negative"));
// Create and save a grayscale image
var grayscale = new GrayscaleImage(img);
var grayscaleImage = grayscale.AddGrayscaleFilter();
grayscaleImage.Save(FileHandler.GetNewPath(path, "_grayscale"));
// Create and save a blurred image
var blurred = new BlurredImage(img);
var blurredImage = blurred.AddBlurFilter();
blurredImage.Save(FileHandler.GetNewPath(path, "_blurred"));
// If everything works, exit the application
Environment.Exit(0);
}
}
return(message);
}
public void AddGrayscaleFilter_FilterAdded_ColorsGrayscale()
{
// Arrange
var r = new Random();
const int width = 3;
const int height = 3;
var img = new Bitmap(width, height);
var expectedImg = new Bitmap(width, height);
for (var x = 0; x < img.Width; x++)
{
for (var y = 0; y < img.Height; y++)
{
const int alpha = 255;
var red = 200;
var green = 100;
var blue = 0;
if (y % 2 == 0)
{
red = 0;
blue = 200;
}
img.SetPixel(x, y, Color.FromArgb(alpha, red, green, blue));
}
}
expectedImg.SetPixel(0, 0, Color.FromArgb(255, 100, 100, 100));
expectedImg.SetPixel(0, 1, Color.FromArgb(255, 100, 100, 100));
expectedImg.SetPixel(0, 2, Color.FromArgb(255, 100, 100, 100));
expectedImg.SetPixel(1, 0, Color.FromArgb(255, 100, 100, 100));
expectedImg.SetPixel(1, 1, Color.FromArgb(255, 100, 100, 100));
expectedImg.SetPixel(1, 2, Color.FromArgb(255, 100, 100, 100));
expectedImg.SetPixel(2, 0, Color.FromArgb(255, 100, 100, 100));
expectedImg.SetPixel(2, 1, Color.FromArgb(255, 100, 100, 100));
expectedImg.SetPixel(2, 2, Color.FromArgb(255, 100, 100, 100));
// Act
var gray = new GrayscaleImage(img);
var grayImage = gray.AddGrayscaleFilter();
// Assert
for (var x = 0; x < grayImage.Width; x++)
{
for (var y = 0; y < grayImage.Height; y++)
{
int expectedAlpha = img.GetPixel(x, y).A;
var expectedRed = expectedImg.GetPixel(x, y).R;
var expectedGreen = expectedImg.GetPixel(x, y).G;
var expectedBlue = expectedImg.GetPixel(x, y).B;
Assert.AreEqual(expectedAlpha, grayImage.GetPixel(x, y).A);
Assert.AreEqual(expectedRed, grayImage.GetPixel(x, y).R);
Assert.AreEqual(expectedGreen, grayImage.GetPixel(x, y).G);
Assert.AreEqual(expectedBlue, grayImage.GetPixel(x, y).B);
}
}
}