Task no 7

Krzysztof Mossakowski Windows Programming 2006 - Tasks

Windows Forms: controls

Version B

Demonstration of using ColorMatrix

• Functionality:
  • Changing of colour and image for the background
  • Changing of an image drawn using ColorMatrix
  • Setting ColorMatrix elements' values
• 
  
• User interface elements:
  • The window: resizable
  • The left part of the window (size set according to window's size):
    • the scene: background drawn using settings from 'Background' tab, selected image drawn using ColorMatrix from 'Transformation' tabl
  • The right part of the window (width: 200px always, height set according to window's size)
    • 'Background' tab - settings of the background (drawn without using ColorMatrix)
      • a button for chaning background colour - shows standard dialog box for choosing a colour (the colour of the button must be the same as applied for the background)
      • a text box with the filename of chosen file for the background (read only)
      • a button for changing a file for the background - shows standard dialog box for choosing a file
      • a combo box with layout of chosen file (None, Tile, Center, Stretch, Zoom)
      • preview of a chosen file (with scroll bars when the image is bigger than preview's field)
    • 'Image' tab - choosing an image to draw using ColorMatrix
      • a text box with a filename of the image (read only)
      • a button for changing the file - shows standard dialog box for choosing a file
    preview of a chosen file (with scroll bars when the picture is bigger than preview's field)
    • 'Transformation' tab - values of ColorMatrix elements
      • 25 text boxes with values of ColorMatrix elements
      • a button to apply current values
• Hints:
  • Button, Label, TextBox, ComboBox, PictureBox, Panel, TabControl, TableLayoutPanel
  • Graphics.DrawImage
  • sample code for using a ColorMatrix:

    Image im = new Bitmap(@"d:\_\img\kkk.jpg");
    ImageAttributes imageAttributes = new ImageAttributes();
    float[][] colorMatrixElements = { 
        new float[] {1.0f, 0.0f, 0.0f, 0.0f, 0.0f}, 
        new float[] {0.0f, 1.0f, 0.0f, 0.0f, 0.0f}, 
        new float[] {0.5f, 0.0f, 1.0f, 0.0f, 0.0f}, 
        new float[] {0.0f, 0.0f, 0.0f, 1.0f, 0.0f}, 
        new float[] {0.0f, 0.0f, 0.0f, 0.0f, 1.0f}};
    ColorMatrix colorMatrix = new ColorMatrix(colorMatrixElements);
    imageAttributes.SetColorMatrix(colorMatrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap); 
    e.Graphics.DrawImage(im, new Rectangle(15, 10, im.Width, im.Height), 0, 0, im.Width, im.Height, 
        GraphicsUnit.Pixel, imageAttributes); 

• Approximate points:
  • window's features and resizing: 1.5
  • the left part:
    • drawing the background: 1.5
    • drawing the image (using ColorMatrix): 1.5
  • the right part:
    • 'Background' tab: 2.5
    • 'Image' tab: 1.5
    • 'Transformation' tab: 1.5