EDOBE XDOM TAKE 6 IR - PRODUCTSHEET Especificações descarregar pdf (Página 78)

CHAPTER 4: User-Interface Tools Resource specifications 78

For details of these objects, see “Graphic customization objects” on page 155.

The

ScriptUIGraphics object contains methods that create the other graphics objects; for example,

ScriptUIGraphics.newBrush()creates a ScriptUIBrush instance with a specific color. These graphic

objects are then used as property values in the

ScriptUIGraphics object, which controls how a

user-interface element is drawn on the screen. For example, if you put the new Brush object in the

backgroundColor property, the element is drawn using that color for the background.

To make the background of a window light gray, you could use this code:

g = myWindow.graphics;

myBrush = g.newBrush(g.BrushType.SOLID_COLOR, [0.75, 0.75, 0.75, 1]);

g.backgroundColor = myBrush;

These examples in the Adobe ExtendScript SDK demonstrates how to use graphic customization objects:

In addition, the Custom element class

allows you to define completely customized elements of several

types (ranges, buttons, lists), whose appearance is rendered entirely by your onDraw

implementation.

Resource specifications

You can create one or more user-interface elements at a time using a resource specification. This specially

formatted string provides a simple and compact means of creating an element, including any container

element and its component elements. The resource-specification string is passed as the

type parameter to

the

Window() or add() constructor function.

The general structure of a resource specification is an element type specification (such as

dialog),

followed by a set of braces enclosing one or more property definitions.

var myResource = "dialog{ control_specs }";

var myDialog = new Window ( myResource );

Controls are defined as properties within windows and other containers. For each control, give the class

name of the control, followed by the properties of the control enclosed in braces. For example, the

following specifies a button:

ScriptUIGraphics

Encapsulates the drawing methods. The graphics object is associated with each

control is found in the control object’s

graphics property.

ScriptUIBrush

Describes the brush used to paint textures in a control.

ScriptUIFont

Describes the font used to write text into a control.

ScriptUIImage

Describes an image to be drawn in a control.

ScriptUIPath

Describes a drawing path for a figure to be drawn into a control.

ScriptUIPen

Describes the pen used to draw lines in a control.

ColorSelector.jsx

Uses graphic objects to change the background color of a window as the user

selects the color value with a slider.

ColorPicker.jsx

A more complex version of the color-selection dialog shows how to use

additional graphics objects, including fonts and paths.

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