Image displaying

edisplay: Loads the specified images, one by one, and displays them on a X-server (or other display device if the minimal abstracted needed is added).

In the top-left corner a tiny, shaded on-screend-display shows the current cursor position as well as the color value of the pixel.

For images including an alpha channel a checkboard is displayed in the background.

The default key and mouse bindings are:

• space, backspace: go thru the list of specified images
• arrow keys, page up/down, left mouse button and mouse-wheel: image panning
• +, -, Ctrl-mouse-wheel: zooming
• tab, shift-tab: cycling thru the image channels as color dropout

  and intensity maps

• 1: reset zoom to 1:1
• a: toggle anti-aliasing
• <, >: counter-clockwise and clockwise orthogonal rotation
• q: quit application

Planned features

• Lua shell for on-the-fly algorithm design
• OpenGL output
• more efficient image loading, e.g. not load the whole image into an Evas canvas but partially on-demand (to support GB sized images)