Build me auto crop program

When the program starts an image should load from an input image folder. The program should crop all images within an input folder. In current program that is the folder (images). For new program let's give this folder the name (input images) The user should be able to set images cropped output size in pixels width & height. The output images will have equal sizes. In the current program this is (Select size of cropped image). The user should be able to define in pixels images aspect ratio. The ratio respectively is width & height. In the current program this is (Select aspect ratio). The user should have option be to lock this ration. In the current program this is (Lock aspect ratio) which is a tick box. The tick box color should be white. There is no color in the current program. So it is difficult to see. The user should be able to define respectively in pixels the width and height for the crop area of the program loaded image. In the current program this is ((Crop area width (pixels)). With the Lock aspect ratio engaged the value entered should produce the correct ((Crop area height (pixels)) value. { Ideally I would like to be able to define crop area by mouse drag} The user should be able to adjust plus and minus the ((Crop area width (pixels)) in increments of 1, 10, 100. The user should be able to adjust plus and minus the ((Crop areaheight (pixels)) in increments of 1, 10, 100 as shown in current program. Program should tab to next field after value is inputed and enter tab is pressed. Finally the user should be able to execute the program. In the current program this is (Crop and save) button.