Matlab_GUI_example

This is an example of a simple GUI for a figure window in Matlab.

Usage

Run the Main.m file in Matlab.

Code

There are three different sections in this code:

1. Buttons,
2. Mouse pointer,
3. Window rotation.

Buttons

This example shows how to create clickable buttons in the main GUI and how to assign a method to this button.

The code for creating a button is

h = uicontrol('position',[10,5,80,30]);
set(h, 'String', 'Button text');
set(h, 'Callback','Main method');

and you implement it as

if nargin<1, action='start'; end

switch(action)
	case 'start'    
		h = uicontrol('position',[10,5,80,30]);
		set(h, 'String', 'Button text');
		set(h, 'Callback','Main method');
	case 'method'
		fprintf('Button Pressed\n');
	otherwise
		error('Unknown action string!');
end

and if you want to add a new button, just do it in the start section as

if nargin<1, action='start'; end

switch(action)
	case 'start'    
		h = uicontrol('position',[10,5,80,30]);
		set(h, 'String', 'Button text');
		set(h, 'Callback','Main method');
		
		h2 = uicontrol('position',[190,5,80,30]);
		set(h2, 'String', 'Rotate');
		set(h2, 'Callback','Main rotate');

	case 'method'
		fprintf('Button Pressed\n');
	case 'rotate'
		%your code here.
	otherwise
		error('Unknown action string!');
end

Mouse pointer

This file allows the user to use the mouse as a pointer and paint all over the window. The code related to this is

switch(action)
	case 'start'    
		set(gcf, 'WindowButtonDownFcn', 'Main down');
	case 'down' % the callback function when button is pressed
		
		% update the callback function of mouse movement
		set(gcf, 'WindowButtonMotionFcn', 'Main move');
		
		% update the callback function of mouse button released
		set(gcf, 'WindowButtonUpFcn', 'Main up');

	case 'up'   % the callback function when button is released

		% update the callback function of mouse movement
		set(gcf, 'WindowButtonMotionFcn', '');
		
		% update the callback function of mouse button released
		set(gcf, 'WindowButtonUpFcn', '');
		
	case 'move' % the callback function when mouse is moved with key pressed

		currPt = get(gca, 'CurrentPoint');
		x = currPt(1,1);
		y = currPt(1,2);

		line(x, y, 'marker', '*','color','b');
		
	otherwise
		error('Unknown action string!');
end

Pointer colors

If you want to change the color of the pointer, you can use the following options

line(x, y, 'marker', '*','color','b');	%blue
line(x, y, 'marker', '*','color','y');	%yellow
line(x, y, 'marker', '*','color','m');	%magenta
line(x, y, 'marker', '*','color','c');	%cyan
line(x, y, 'marker', '*','color','r');	%red
line(x, y, 'marker', '*','color','g');	%green
line(x, y, 'marker', '*','color','k');	%black

Window rotation

This example shows two ways on how to make a window rotation.

case 'rotate'
	for i=1:36
		camroll(10)
		drawnow
	end
case 'rotate2'
	slider = findobj(0, 'tag', 'sliderBox');
	valueSlider=get(slider, 'value');
	valueSlider=floor(valueSlider*100);
	valueSliderTotal=valueSlider*360/100;
	view([valueSliderTotal,90])