swt.java

源码为Eclipse开源开发平台桌面开发工具SWT的源代码,

	/**
	 * Style constant to ensure no trimmings are used (value is 1<<3).
	 * <br>Note that this overrides all other trim styles.
	 * <p><b>Used By:</b><ul>
	 * <li><code>Decorations</code> and subclasses</li>
	 * </ul></p>
	 */
	public static final int NO_TRIM = 1 << 3;
	
	/**
	 * Style constant for resize box trim (value is 1&lt;&lt;4).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Decorations</code> and subclasses</li>
	 * <li><code>Tracker</code></li>
	 * </ul></p>
	 */
	public static final int RESIZE = 1 << 4;

	/**
	 * Style constant for title area trim (value is 1&lt;&lt;5).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Decorations</code> and subclasses</li>
	 * </ul></p>
	 */
	public static final int TITLE = 1 << 5;

	/**
	 * Style constant for close box trim (value is 1&lt;&lt;6,
	 * since we do not distinguish between CLOSE style and MENU style).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Decorations</code> and subclasses</li>
	 * </ul></p>
	 */
	public static final int CLOSE = 1 << 6;

	/**
	 * Style constant for shell menu trim (value is 1&lt;&lt;6,
	 * since we do not distinguish between CLOSE style and MENU style).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Decorations</code> and subclasses</li>
	 * </ul></p>
	 */
	public static final int MENU = CLOSE;

	/**
	 * Style constant for minimize box trim (value is 1&lt;&lt;7).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Decorations</code> and subclasses</li>
	 * </ul></p>
	 */
	public static final int MIN = 1 << 7;

	/**
	 * Style constant for maximize box trim (value is 1&lt;&lt;10).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Decorations</code> and subclasses</li>
	 * </ul></p>
	 */
	public static final int MAX = 1 << 10;

	/**
	 * Style constant for horizontal scrollbar behavior (value is 1&lt;&lt;8).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Scrollable</code> and subclasses</li>
	 * </ul></p>
	 */
	public static final int H_SCROLL = 1 << 8;

	/**
	 * Style constant for vertical scrollbar behavior (value is 1&lt;&lt;9).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Scrollable</code> and subclasses</li>
	 * </ul></p>
	 */
	public static final int V_SCROLL = 1 << 9;

	/**
	 * Style constant for bordered behavior (value is 1&lt;&lt;11).
	 * <br>Note that this is a <em>HINT</em>.
	 * <p><b>Used By:</b><ul>
	 * <li><code>Control</code> and subclasses</li>
	 * </ul></p>
	 */
	public static final int BORDER = 1 << 11;

	/**
	 * Style constant indicating that the window manager should clip
	 * a widget's children with respect to its viewable area. (value is 1&lt;&lt;12).
	 * <br>Note that this is a <em>HINT</em>.
	 * <p><b>Used By:</b><ul>
	 * <li><code>Control</code> and subclasses</li>
	 * </ul></p>
	 */
	public static final int CLIP_CHILDREN = 1 << 12; 

	/**
	 * Style constant indicating that the window manager should clip
	 * a widget's siblings with respect to its viewable area. (value is 1&lt;&lt;13).
	 * <br>Note that this is a <em>HINT</em>.
	 * <p><b>Used By:</b><ul>
	 * <li><code>Control</code> and subclasses</li>
	 * </ul></p>
	 */
	public static final int CLIP_SIBLINGS = 1 << 13;

	/**
	 * Style constant for always on top behavior (value is 1&lt;&lt;14).
	 * <br>Note that this is a <em>HINT</em>.
	 * <p><b>Used By:</b><ul>
	 * <li><code>Shell</code> and subclasses</li>
	 * </ul></p>
	 */
	public static final int ON_TOP = 1 << 14;

	/**
	 * Trim style convenience constant for the most common top level shell appearance
	 * (value is CLOSE|TITLE|MIN|MAX|RESIZE).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Shell</code></li>
	 * </ul></p>
	 */
	public static final int SHELL_TRIM = CLOSE | TITLE | MIN | MAX | RESIZE;

	/**
	 * Trim style convenience constant for the most common dialog shell appearance
	 * (value is CLOSE|TITLE|BORDER).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Shell</code></li>
	 * </ul></p>
	 */
	public static final int DIALOG_TRIM = TITLE | CLOSE | BORDER;

	/**
	 * Style constant for modeless behavior (value is 0).
	 * <br>Note that this is a <em>HINT</em>.
	 * <p><b>Used By:</b><ul>
	 * <li><code>Dialog</code></li>
	 * <li><code>Shell</code></li>
	 * </ul></p>
	 */
	public static final int MODELESS = 0;

	/**
	 * Style constant for primary modal behavior (value is 1&lt;&lt;15).
	 * <br>Note that this is a <em>HINT</em>.
	 * <p><b>Used By:</b><ul>
	 * <li><code>Dialog</code></li>
	 * <li><code>Shell</code></li>
	 * </ul></p>
	 */
	public static final int PRIMARY_MODAL = 1 << 15;

	/**
	 * Style constant for application modal behavior (value is 1&lt;&lt;16).
	 * <br>Note that this is a <em>HINT</em>.
	 * <p><b>Used By:</b><ul>
	 * <li><code>Dialog</code></li>
	 * <li><code>Shell</code></li>
	 * </ul></p>
	 */
	public static final int APPLICATION_MODAL = 1 << 16;

	/**
	 * Style constant for system modal behavior (value is 1&lt;&lt;17).
	 * <br>Note that this is a <em>HINT</em>.
	 * <p><b>Used By:</b><ul>
	 * <li><code>Dialog</code></li>
	 * <li><code>Shell</code></li>
	 * </ul></p>
	 */
	public static final int SYSTEM_MODAL = 1 << 17;

	/**
	 * Style constant for selection hiding behavior when the widget loses focus (value is 1&lt;&lt;15).
	 * <br>Note that this is a <em>HINT</em>.
	 * <p><b>Used By:</b><ul>
	 * <li><code>Table</code></li>
	 * </ul></p>
	 */
	public static final int HIDE_SELECTION = 1 << 15;

	/**
	 * Style constant for full row selection behavior. (value is 1&lt;&lt;16).
	 * <br>Note that this is a <em>HINT</em>.
	 * <p><b>Used By:</b><ul>
	 * <li><code>StyledText</code></li>
	 * <li><code>Table</code></li>
	 * <li><code>TableTree</code></li>
	 * </ul></p>
	 */
	public static final int FULL_SELECTION = 1 << 16;

	/**
	 * Style constant for flat appearance. (value is 1&lt;&lt;23).
	 * <br>Note that this is a <em>HINT</em>.
	 * <p><b>Used By:</b><ul>
	 * <li><code>Button</code></li>
	 * <li><code>ToolBar</code></li>
	 * </ul></p>
	 */
	public static final int FLAT = 1 << 23;

	/**
	 * Style constant for flat appearance. (value is 1&lt;&lt;16).
	 * <br>Note that this is a <em>HINT</em>.
	 * <p><b>Used By:</b><ul>
	 * <li><code>ProgressBar</code></li>
	 * </ul></p>
	 */
	public static final int SMOOTH = 1 << 16;

	/**
	 * Style constant for no background behavior (value is 1&lt;&lt;18).
	 * <p>
	 * By default, before a widget paints, the client area is filled with the current background color.
	 * When this style is specified, the background is not filled, and the application is responsible
	 * for filling every pixel of the client area.
	 * This style might be used as an alternative to "double-buffering" in order to reduce flicker.
	 * This style does not mean "transparent" - widgets that are obscured will not draw through.
	 * </p><p><b>Used By:</b><ul>
	 * <li><code>Composite</code></li>
	 * </ul></p>
	 */
	public static final int NO_BACKGROUND = 1 << 18;

	/**
	 * Style constant for does not take focus behavior (value is 1&lt;&lt;19).
	 * <br>Note that this is a <em>HINT</em>.
	 * <p><b>Used By:</b><ul>
	 * <li><code>Composite</code></li>
	 * </ul></p>
	 */
	public static final int NO_FOCUS = 1 << 19;

	/**
	 * Style constant for no redraw on resize behavior (value is 1&lt;&lt;20).
	 * <p>
	 * This style stops the entire client area from being invalidated when the size
	 * of the Canvas changes. Specifically, when the size of the Canvas gets smaller,
	 * the SWT.Paint event is not sent. When it gets bigger, an SWT.Paint event is
	 * sent with a GC clipped to only the new areas to be painted. Without this
	 * style, the entire client area will be repainted.
	 * </p><p><b>Used By:</b><ul>
	 * <li><code>Composite</code></li>
	 * </ul></p>
	 */
	public static final int NO_REDRAW_RESIZE = 1 << 20;

	/**
	 * Style constant for no paint event merging behavior (value is 1&lt;&lt;21).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Composite</code></li>
	 * </ul></p>
	 */
	public static final int NO_MERGE_PAINTS = 1 << 21;

	/**
	 * Style constant for preventing child radio group behavior (value is 1&lt;&lt;22).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Composite</code></li>
	 * </ul></p>
	 */
	public static final int NO_RADIO_GROUP = 1 << 22;
	
	/**
	 * Style constant for left to right orientation (value is 1&lt;&lt;25).
	 * <p>
	 * When orientation is not explicitly specified, orientation is
	 * inherited.  This means that children will be assigned the
	 * orientation of their parent.  To override this behavior and
	 * force an orientation for a child, explicitly set the orientation
	 * of the child when that child is created.
	 * </p>
	 * <p><b>Used By:</b><ul>
	 * <li><code>Control</code></li>
	 * <li><code>Menu</code></li>
	 * <li><code>GC</code></li> 
	 * </ul></p>
	 * 
	 * @since 2.1.2
	 */
	public static final int LEFT_TO_RIGHT = 1 << 25;
	
	/**
	 * Style constant for right to left orientation (value is 1&lt;&lt;26).
	 * <p>
	 * When orientation is not explicitly specified, orientation is
	 * inherited.  This means that children will be assigned the
	 * orientation of their parent.  To override this behavior and
	 * force an orientation for a child, explicitly set the orientation
	 * of the child when that child is created.
	 * </p>
	 * <p><b>Used By:</b><ul>
	 * <li><code>Control</code></li>
	 * <li><code>Menu</code></li>
	 * <li><code>GC</code></li> 
	 * </ul></p>
	 * 
	 * @since 2.1.2
	 */
	public static final int RIGHT_TO_LEFT = 1 << 26;
	
	/**
	 * Style constant to indicate coordinate mirroring (value is 1&lt;&lt;27).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Control</code></li>
	 * <li><code>Menu</code></li>
	 * </ul></p>
	 * 
	 * @since 2.1.2
	 */
	public static final int MIRRORED = 1 << 27;
	
	/**
	 * Style constant to allow embedding (value is 1&lt;&lt;24).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Composite</code></li>
	 * </ul></p>
	 * 
	 * @since 3.0
	 */
	public static final int EMBEDDED = 1 << 24;
	
	/**
	 * Style constant to allow virtual data (value is 1&lt;&lt;28).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Table</code></li>
	 * </ul></p>
	 * 
	 * @since 3.0
	 */
	public static final int VIRTUAL = 1 << 28;

	/**
	 * Style constant for align up behavior (value is 1&lt;&lt;7,
	 * since align UP and align TOP are considered the same).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Button</code> with <code>ARROW</code> style</li>
	 * <li><code>Tracker</code></li>
	 * </ul></p>
	 */
	public static final int UP = 1 << 7;

	/**
	 * Style constant for align top behavior (value is 1&lt;&lt;7,
	 * since align UP and align TOP are considered the same).
	 * <p><b>Used By:</b><ul>
	 * <li><code>FormAttachment</code> in a <code>FormLayout</code></li>
	 * </ul></p>
	 */
	public static final int TOP = UP;

	/**
	 * Style constant for align down behavior (value is 1&lt;&lt;10,
	 * since align DOWN and align BOTTOM are considered the same).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Button</code> with <code>ARROW</code> style</li>
	 * <li><code>Tracker</code></li>
	 * </ul></p>
	 */
	public static final int DOWN               = 1 << 10;

	/**
	 * Style constant for align bottom behavior (value is 1&lt;&lt;10,
	 * since align DOWN and align BOTTOM are considered the same).
	 * <p><b>Used By:</b><ul>
	 * <li><code>FormAttachment</code> in a <code>FormLayout</code></li>
	 * </ul></p>
	 */
	public static final int BOTTOM             = DOWN;

	/**
	 * Style constant for leading alignment (value is 1&lt;&lt;14).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Button</code></li>
	 * <li><code>Label</code></li>
	 * <li><code>TableColumn</code></li>
	 * <li><code>Tracker</code></li>
	 * <li><code>FormAttachment</code> in a <code>FormLayout</code></li>
	 * </ul></p>
	 * 
	 * @since 2.1.2
	 */
	public static final int LEAD               = 1 << 14;
	
	/**
	 * Style constant for align left behavior (value is 1&lt;&lt;14).
	 * This is a synonym for LEAD (value is 1&lt;&lt;14).  Newer
	 * applications should use LEAD instead of LEFT to make code more
	 * understandable on right-to-left platforms.
	 */
	public static final int LEFT               = LEAD;

	/**
	 * Style constant for trailiing alignment (value is 1&lt;&lt;17).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Button</code></li>
	 * <li><code>Label</code></li>
	 * <li><code>TableColumn</code></li>
	 * <li><code>Tracker</code></li>
	 * <li><code>FormAttachment</code> in a <code>FormLayout</code></li>
	 * </ul></p>
	 * 
	 * @since 2.1.2
	 */
	public static final int TRAIL              = 1 << 17;
		
	/**
	 * Style constant for align right behavior (value is 1&lt;&lt;17).
	 * This is a synonym for TRAIL (value is 1&lt;&lt;14).  Newer
	 * applications should use TRAIL instead of RIGHT to make code more
	 * understandable on right-to-left platforms.
	 */
	public static final int RIGHT              = TRAIL;

	/**
	 * Style constant for align center behavior (value is 1&lt;&lt;24).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Button</code></li>
	 * <li><code>Label</code></li>
	 * <li><code>TableColumn</code></li>
	 * <li><code>FormAttachment</code> in a <code>FormLayout</code></li>
	 * </ul></p>
	 */
	public static final int CENTER = 1 << 24;

	/**
	 * Style constant for horizontal alignment or orientation behavior (value is 1&lt;&lt;8).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Label</code></li>
	 * <li><code>ProgressBar</code></li>
	 * <li><code>Sash</code></li>
	 * <li><code>Scale</code></li>
	 * <li><code>ScrollBar</code></li>
	 * <li><code>Slider</code></li>
	 * <li><code>ToolBar</code></li>
	 * <li><code>FillLayout</code> type</li>
	 * <li><code>RowLayout</code> type</li>
	 * </ul></p>
	 */
	public static final int HORIZONTAL = 1 << 8;

	/**
	 * Style constant for vertical alignment or orientation behavior (value is 1&lt;&lt;9).
	 * <p><b>Used By:</b><ul>
	 * <li><code>Label</code></li>
	 * <li><code>ProgressBar</code></li>
	 * <li><code>Sash</code></li>
	 * <li><code>Scale</code></li>
	 * <li><code>ScrollBar</code></li>
	 * <li><code>Slider</code></li>
	 * <li><code>ToolBar</code></li>
	 * <li><code>FillLayout</code> type</li>
	 * <li><code>RowLayout</code> type</li>
	 * </ul></p>
	 */
	public static final int VERTICAL = 1 << 9;

	/**
	 * Style constant for vertical alignment or orientation behavior (value is 1).
	 * <p><b>Used By:</b><ul>
	 * <li><code>GridLayout</code> type</li>
	 * </ul></p>
	 */
	public static final int BEGINNING = 1;
	
	/**
	 * Style constant for vertical alignment or orientation behavior (value is 4).
	 * <p><b>Used By:</b><ul>
	 * <li><code>GridLayout</code> type</li>
	 * </ul></p>
	 */
	public static final int FILL = 4;
	
	/**
	 * Input Method Editor style constant for double byte
	 * input behavior (value is 1&lt;&lt;1).
	 */
	public static final int DBCS = 1 << 1;

	/**
	 * Input Method Editor style constant for alpha
	 * input behavior (value is 1&lt;&lt;2).
	 */
	public static final int ALPHA = 1 << 2;

	/**
	 * Input Method Editor style constant for native
	 * input behavior (value is 1&lt;&lt;3).
	 */
	public static final int NATIVE = 1 << 3;