Mercurial > projects > dwt-mac

annotate dwt/custom/BidiSegmentEvent.d @ 156:969e7de37c3d default tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fixes to get dwt to work with dmd and ldc
author Jacob Carlborg <doob@me.com>
date Wed, 08 Jul 2009 21:56:44 +0200
parents 6337764516f1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
41
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
1 /*******************************************************************************
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
2 * Copyright (c) 2000, 2008 IBM Corporation and others.
0
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
3 * All rights reserved. This program and the accompanying materials
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
4 * are made available under the terms of the Eclipse Public License v1.0
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
5 * which accompanies this distribution, and is available at
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
6 * http://www.eclipse.org/legal/epl-v10.html
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
7 *
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
8 * Contributors:
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
9 * IBM Corporation - initial API and implementation
13
f565d3a95c0a Ported dwt.internal
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents: 0
diff changeset
10 * Port to the D programming language:
41
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
11 * Frank Benoit <benoit@tionex.de>
0
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
12 *******************************************************************************/
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
13 module dwt.custom.BidiSegmentEvent;
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
14
41
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
15 import dwt.dwthelper.utils;
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
16
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
17
0
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
18 import dwt.events.TypedEvent;
41
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
19 import dwt.custom.StyledTextEvent;
0
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
20
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
21 /**
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
22 * This event is sent to BidiSegmentListeners when a line is to
41
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
23 * be measured or rendered in a bidi locale. The segments field is
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
24 * used to specify text ranges in the line that should be treated as
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
25 * separate segments for bidi reordering. Each segment will be reordered
0
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
26 * and rendered separately.
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
27 * <p>
41
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
28 * The elements in the segments field specify the start offset of
0
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
29 * a segment relative to the start of the line. They must follow
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
30 * the following rules:
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
31 * <ul>
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
32 * <li>first element must be 0
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
33 * <li>elements must be in ascending order and must not have duplicates
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
34 * <li>elements must not exceed the line length
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
35 * </ul>
41
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
36 * In addition, the last element may be set to the end of the line
0
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
37 * but this is not required.
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
38 *
41
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
39 * The segments field may be left null if the entire line should
0
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
40 * be reordered as is.
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
41 * </p>
41
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
42 * A BidiSegmentListener may be used when adjacent segments of
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
43 * right-to-left text should not be reordered relative to each other.
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
44 * For example, within a Java editor, you may wish multiple
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
45 * right-to-left string literals to be reordered differently than the
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
46 * bidi algorithm specifies.
0
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
47 *
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
48 * Example:
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
49 * <pre>
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
50 * stored line = "R1R2R3" + "R4R5R6"
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
51 * R1 to R6 are right-to-left characters. The quotation marks
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
52 * are part of the line text. The line is 13 characters long.
41
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
53 *
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
54 * segments = null:
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
55 * entire line will be reordered and thus the two R2L segments
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
56 * swapped (as per the bidi algorithm).
0
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
57 * visual line (rendered on screen) = "R6R5R4" + "R3R2R1"
41
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
58 *
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
59 * segments = [0, 5, 8]
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
60 * "R1R2R3" will be reordered, followed by [blank]+[blank] and
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
61 * "R4R5R6".
0
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
62 * visual line = "R3R2R1" + "R6R5R4"
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
63 * </pre>
41
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
64 *
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
65 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
0
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
66 */
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
67 public class BidiSegmentEvent : TypedEvent {
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
68
41
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
69 /**
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
70 * line start offset
0
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
71 */
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
72 public int lineOffset;
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
73
41
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
74 /**
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
75 * line text
0
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
76 */
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
77 public String lineText;
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
78
41
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
79 /**
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
80 * bidi segments, see above
0
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
81 */
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
82 public int[] segments;
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
83
41
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
84 this(StyledTextEvent e) {
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
85 super(cast(Object)e);
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
86 lineOffset = e.detail;
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
87 lineText = e.text;
0
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
88 }
41
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
Frank Benoit <benoit@tionex.de>
parents: 13
diff changeset
89 }