IBM实验室对SWT, Swing 和 AWT 的特征比较

王朝java/jsp·作者佚名  2006-03-10
窄屏简体版  字體: |||超大  

Table 1. SWT vs. AWT and Swing Feature comparison

Function/Role/Aspect

AWT

Swing

SWT (style)

Display static text

Label

JLabel

Label, CLabel

Display multi-line static text

Multiple Labels

Multiple JLabels or JLabel with HTML content

Multiple Labels or Label with newlines

Display multi-line formatted static text

Multiple Labels with different fonts

JLabel with HTML content

Multiple Labels with different fonts

Single-line text entry

TextField

JTextField

Text(SWT.SINGLE)

Multi-line text entry

TextArea

JTextArea

Text(SWT.MULTI)

Display an image

N/A

JLabel

Label

Display text and image

N/A

JLabel

CLabel

ToolTip pop-up help

N/A

setToolTip on component, subclass JToolTip

setToolTip on control

Styled text entry

N/A

JEditorPane

StyledText

Select from list of items

List

JList

List

Simple push button with text

Button

JButton

Button(SWT.PUSH)

Simple push button with text and/or image

N/A

JButton

Button(SWT.PUSH)

Drawing area; possibly for custom controls

Canvas

JPanel

Canvas

On/off check box

CheckBox

JCheckBox

Button(SWT.CHECK)

Radio selection

CheckBoxGroup

ButtonGroup and menus

Group and Menu

Select from a drop-down list

Choice

JComboBox

Combo, CCombo

Enter text or select from a drop-down list

N/A

JComboBox

Combo, CCombo

Scrollable area

ScrollPane

JScrollPane

Create Scrollable subclass

Top level windows

Dialog, Frame, Window

JDialog, JFrame, JWindow

Shell with different styles

Generic window

Window

JWindow

Shell

Frame window

Frame

JFrame

Shell(SWT.SHELL_TRIM)

Dialog window

Dialog

JDialog

Shell(SWT.DIALOG_TRIM)

Menu

Menu

JMenu

Menu

MenuItem

MenuItem

JMenuItem

MenuItem

Menu shortcuts

Generic keystrokes

same as AWT

host dependent mnemonics and accelerators

Pop-up menu

PopupMenu

JPopupMenu

Menu(SWT.POPUP)

Menu bars

MenuBar

JMenuBar

Menu(SWT.BAR)

Display an insertion caret

N/A

Caret

Caret

Web browser

N/A

JTextPane (HTML 3.2)

Browser (via embedded browser)

Embed control in web page

Applet

JApplet

Host control (ex. OLE)

Generic container of other controls

Panel

JPanel

Composite

Generic container of other controls with a border

Panel (if drawn manually)

JPanel with a Border

Composite(SWT.BORDER)

Generic container of other controls with a border and title

N/A

JPanel with a TitledBorder

Group

Radio button (one of set on)

Checkbox

JRadioButton

Button(SWT.RADIO)

Control extent of radio buttons

CheckboxGroup

RadioButtonGroup

Group

Arrow buttons

N/A

JButton with image

Button(SWT.ARROW)

Supports int'l text orientations

via ComponentOrientation

same as AWT

Many components support styles for this

Focus Traversal

Policy and Manager objects

same as AWT

Next on control

Custom dialogs

Dialog subclass

JDialog subclass

Dialog subclass

Access to system events

EventQueue services

same as AWT

Display services (less robust than AWT)

System access dialogs

FileDialog

JColorChooser, JFileChooser

ColorDialog, DirectoryDialog, FileDialog, FontDialog, PrintDialog

Display simple message dialog

N/A (must subclass Dialog)

JOptionPane static methods

MessageBox with numerous styles

Display simple prompting dialog

N/A (must subclass Dialog)

JOptionPane static methods

N/A (classes exist in JFace to do this)

Layout managers

BorderLayout, CardLayout, FlowLayout, GridLayout, GridBagLayout

AWT plus BoxLayout, CenterLayout, SpringLayout

FillLayout, FormLayout, GridLayout, RowLayout, StackLayout

Basic drawing control

Canvas

JPanel

Canvas

Basic drawing

Graphics and Graphics2D objects - Basic shapes and text, arbitrary Shapes and Strokes, Bezier, fills, etc.

same as AWT

GC object - Basic shapes and text

Drawing transforms

Affine, composites

same as AWT

N/A

Off screen drawing

BufferedImage, drawImage

same as AWT

Image, drawImage

Double buffering

Manual

Automatic or manual

Manual unless provided by host control

Printing

PrintJob and PrintGraphics

same as AWT

draw to Printer device

Custom colors

Color

same as AWT

Color

Custom fonts

Font, FontMetrics

same as AWT

Font

Cursors selection

Cursor

same as AWT

Cursor

Image features

load from file, create dynamically, extensive edits

same as AWT

load from file, create dynamically, basic edits

Input automation

Robot

same as AWT

N/A

Display a tool bar

N/A

JToolBar

ToolBar, CoolBar

Display a progress bar

N/A

JProgressBar

ProgressBar

Divide space between areas

N/A

JSplitPane

Sash or SashForm

Display tabbed areas

N/A

JTabbedPane

TabFolder, CTabFolder

Display tabular info

N/A

JTable

Table

Format table columns

N/A

TableColumn

TableColumn

Display hierarchical info

N/A

JTree

Tree

Select from range of values

N/A

JSlider

Slider

Select from discrete range of values

N/A

JSpinner

Scale

Access to the base display

Toolkit, GraphicsConfiguration, GraphicsDevice

same as AWT

Display

Add items to the system tray

N/A

N/A

Tray

Key: N/A - Not available. In many cases, this feature can be created, with varying degrees of difficulty, by creating custom controls or containers of controls or by other custom programming.

作者最后得出的结论是如果你只开发用于某一特性平台(当然,只能是主流平台),SWT就有优势了,它可以集成这些平台的特有的功能。例如在Windows下使用ActiveX控件。

 
 
 
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