Source Code Cross Referenced for Layout.java in  » IDE-Eclipse » swt » org » eclipse » swt » widgets » Java Source Code / Java DocumentationJava Source Code and Java Documentation

Java Source Code / Java Documentation
1. 6.0 JDK Core
2. 6.0 JDK Modules
3. 6.0 JDK Modules com.sun
4. 6.0 JDK Modules com.sun.java
5. 6.0 JDK Modules sun
6. 6.0 JDK Platform
7. Ajax
8. Apache Harmony Java SE
9. Aspect oriented
10. Authentication Authorization
11. Blogger System
12. Build
13. Byte Code
14. Cache
15. Chart
16. Chat
17. Code Analyzer
18. Collaboration
19. Content Management System
20. Database Client
21. Database DBMS
22. Database JDBC Connection Pool
23. Database ORM
24. Development
25. EJB Server geronimo
26. EJB Server GlassFish
27. EJB Server JBoss 4.2.1
28. EJB Server resin 3.1.5
29. ERP CRM Financial
30. ESB
31. Forum
32. GIS
33. Graphic Library
34. Groupware
35. HTML Parser
36. IDE
37. IDE Eclipse
38. IDE Netbeans
39. Installer
40. Internationalization Localization
41. Inversion of Control
42. Issue Tracking
43. J2EE
44. JBoss
45. JMS
46. JMX
47. Library
48. Mail Clients
49. Net
50. Parser
51. PDF
52. Portal
53. Profiler
54. Project Management
55. Report
56. RSS RDF
57. Rule Engine
58. Science
59. Scripting
60. Search Engine
61. Security
62. Sevlet Container
63. Source Control
64. Swing Library
65. Template Engine
66. Test Coverage
67. Testing
68. UML
69. Web Crawler
70. Web Framework
71. Web Mail
72. Web Server
73. Web Services
74. Web Services apache cxf 2.0.1
75. Web Services AXIS2
76. Wiki Engine
77. Workflow Engines
78. XML
79. XML UI
Java
Java Tutorial
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
Photoshop Tutorials
Maya Tutorials
Flash Tutorials
3ds-Max Tutorials
Illustrator Tutorials
GIMP Tutorials
C# / C Sharp
C# / CSharp Tutorial
C# / CSharp Open Source
ASP.Net
ASP.NET Tutorial
JavaScript DHTML
JavaScript Tutorial
JavaScript Reference
HTML / CSS
HTML CSS Reference
C / ANSI-C
C Tutorial
C++
C++ Tutorial
Ruby
PHP
Python
Python Tutorial
Python Open Source
SQL Server / T-SQL
SQL Server / T-SQL Tutorial
Oracle PL / SQL
Oracle PL/SQL Tutorial
PostgreSQL
SQL / MySQL
MySQL Tutorial
VB.Net
VB.Net Tutorial
Flash / Flex / ActionScript
VBA / Excel / Access / Word
XML
XML Tutorial
Microsoft Office PowerPoint 2007 Tutorial
Microsoft Office Excel 2007 Tutorial
Microsoft Office Word 2007 Tutorial
Java Source Code / Java Documentation » IDE Eclipse » swt » org.eclipse.swt.widgets 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*******************************************************************************
002:         * Copyright (c) 2000, 2005 IBM Corporation and others.
003:         * All rights reserved. This program and the accompanying materials
004:         * are made available under the terms of the Eclipse Public License v1.0
005:         * which accompanies this distribution, and is available at
006:         * http://www.eclipse.org/legal/epl-v10.html
007:         *
008:         * Contributors:
009:         *     IBM Corporation - initial API and implementation
010:         *******************************************************************************/package org.eclipse.swt.widgets;
011:
012:        import org.eclipse.swt.graphics.*;
013:
014:        /**
015:         * A layout controls the position and size
016:         * of the children of a composite widget.
017:         * This class is the abstract base class for
018:         * layouts.
019:         * 
020:         *  @see Composite#setLayout(Layout)
021:         */
022:        public abstract class Layout {
023:
024:            /**
025:             * Computes and returns the size of the specified
026:             * composite's client area according to this layout.
027:             * <p>
028:             * This method computes the size that the client area 
029:             * of the composite must be in order to position all 
030:             * children at their preferred size inside the
031:             * composite according to the layout algorithm
032:             * encoded by this layout.
033:             * </p>
034:             * <p>
035:             * When a width or height hint is supplied, it is
036:             * used to constrain the result. For example, if a
037:             * width hint is provided that is less than the
038:             * width of the client area, the layout may choose
039:             * to wrap and increase height, clip, overlap, or
040:             * otherwise constrain the children.
041:             * </p>
042:             *
043:             * @param composite a composite widget using this layout
044:             * @param wHint width (<code>SWT.DEFAULT</code> for preferred size)
045:             * @param hHint height (<code>SWT.DEFAULT</code> for preferred size)
046:             * @param flushCache <code>true</code> means flush cached layout values
047:             * @return a point containing the computed size (width, height)
048:             * 
049:             * @see #layout
050:             * @see Control#getBorderWidth
051:             * @see Control#getBounds
052:             * @see Control#getSize
053:             * @see Control#pack(boolean)
054:             * @see "computeTrim, getClientArea for controls that implement them"
055:             */
056:            protected abstract Point computeSize(Composite composite,
057:                    int wHint, int hHint, boolean flushCache);
058:
059:            /**
060:             * Instruct the layout to flush any cached values
061:             * associated with the control specified in the argument 
062:             * <code>control</code>.
063:             * 
064:             * @param control a control managed by this layout
065:             * @return true if the Layout has flushed all cached information associated with control
066:             * 
067:             * @since 3.1
068:             */
069:            protected boolean flushCache(Control control) {
070:                return false;
071:            }
072:
073:            /**
074:             * Lays out the children of the specified composite
075:             * according to this layout.
076:             * <p>
077:             * This method positions and sizes the children of a
078:             * composite using the layout algorithm encoded by this
079:             * layout. Children of the composite are positioned in
080:             * the client area of the composite. The position of
081:             * the composite is not altered by this method.
082:             * </p>
083:             * <p>
084:             * When the flush cache hint is true, the layout is
085:             * instructed to flush any cached values associated
086:             * with the children. Typically, a layout will cache
087:             * the preferred sizes of the children to avoid the
088:             * expense of computing these values each time the
089:             * widget is laid out.
090:             * </p>
091:             * <p>
092:             * When layout is triggered explicitly by the programmer
093:             * the flush cache hint is true. When layout is triggered
094:             * by a resize, either caused by the programmer or by the
095:             * user, the hint is false.
096:             * </p>
097:             *
098:             * @param composite a composite widget using this layout
099:             * @param flushCache <code>true</code> means flush cached layout values
100:             */
101:            protected abstract void layout(Composite composite,
102:                    boolean flushCache);
103:        }
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.