Simple Image Manipulation App (Flip, Rotate, Crop)

This is a simple image manipulation app with the following features:

• Load an image (Press L)
  
• Horizontal flipping (Press H)
  
• Vertical flipping (Press V)
  
• Rotation by pressing R (90 degree clockwise rotation) or SHIFT+R (90 degree counter-clockwise rotation)
  
• Cropping (click & drag mouse to define a crop rectangle)
  
• File navigation (press SPACE to load the next image in the active folder, press BACKSPACE to load the previous image in the folder).
  
• Save modified image (Press S)

Examples:





I wanted to learn more about Cairo graphics in RC6 by putting together a fully functional (albeit small) application. I haven't used RC6 Widgets for this project though, just vanilla VB6 forms & controls.

KNOWN BUGS:

Saving a cropped & rotated image will likely crop at the wrong location. Still trying to figure out why, and wouldn't mind some help with this part :) It might be nice if CCairoSurface had a Crop(X1, Y1, X2, Y2) method that would return a new CCairoSurface cropped out of the full-sized surface.

OTHER NOTES:

I'm not convinced I've gone about the Cairo stuff optimally - if Olaf or any other Cairo-knowledgable folks would be kind enough to review the code and make suggestions, it would be much appreciated.

Source Code (Requires RC6):

RC6CairoImageEditor.zip

Hope you enjoy the demo, and maybe even learn something from it.

Attached Images

  

Attached Files

• RC6CairoImageEditor.zip (7.8 KB)