MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Uživatelský manuál stáhnout pdf (Strana 312)

12 Examples of GUIs Created Programmatically

12-34

The Components

The GUI includes the following components:

• A edit text that instructs the user or contains the name of the file to be

edited. The edit text is labeled using a static text.

• A push button to the right of the edit text enables the user to select an

existing icon file for editing.

• A panel containing an axes. The axes displays a 16-by-16 grid for drawing an

icon.

• A panel containing a button that shows a preview of the icon as it is being

created.

• A color palette that is created in a separate script and embedded in this GUI.

See “Color Palette” on page 12-22.

• A panel, configured as a line, that separates the icon editor from the

OK and

Cancel buttons.

• An

OK push button that causes the GUI to return the icon as an m-by-n-by-3

array and closes the GUI.

• A

Cancel push button that closes the GUI without returning the icon.

Using the Icon Editor

These are the basic steps to create an icon:

1 Start the icon editor with a command such as

myicon = iconEditor('iconwidth',32,'iconheight',56);

where the iconwidth and iconheight properties specify the icon size in

pixels.

2 Color the squares in the grid.

- Click a color cell in the palette. That color is then displayed in the palette

preview.

- Click in specific squares of the grid to transfer the selected color to those

squares.

- Hold down the left mouse button and drag the mouse over the grid to

transfer the selected color to the squares that you touch.

- Change a color by writing over it with another color.

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MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Uživatelský manuál Strana 312