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comparison dwtx/draw2d/text/LineBox.d @ 98:95307ad235d9

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Added Draw2d code, still work in progress
author Frank Benoit <benoit@tionex.de>
date Sun, 03 Aug 2008 00:52:14 +0200
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96:b492ba44e44d 98:95307ad235d9
1 /*******************************************************************************
2 * Copyright (c) 2000, 2005 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 * Port to the D programming language:
11 * Frank Benoit <benoit@tionex.de>
12 *******************************************************************************/
13 module dwtx.draw2d.text.LineBox;
14
15 import dwt.dwthelper.utils;
16 import dwtx.dwtxhelper.Collection;
17 import dwtx.draw2d.text.CompositeBox;
18 import dwtx.draw2d.text.FlowBox;
19
20 /**
21 * @author hudsonr
22 * @since 2.1
23 */
24 public abstract class LineBox
25 : CompositeBox
26 {
27
28 /**
29 * The maximum ascent of all contained fragments.
30 */
31 int contentAscent;
32
33 /**
34 * The maximum descent of all contained fragments.
35 */
36 int contentDescent;
37
38 List fragments;
39
40 public this(){
41 fragments = new ArrayList();
42 }
43
44 /**
45 * @see dwtx.draw2d.text.CompositeBox#add(dwtx.draw2d.text.FlowBox)
46 */
47 public void add(FlowBox child) {
48 fragments.add(child);
49 width += child.getWidth();
50 contentAscent = Math.max(contentAscent, child.getOuterAscent());
51 contentDescent = Math.max(contentDescent, child.getOuterDescent());
52 }
53
54 /**
55 * @see dwtx.draw2d.text.FlowBox#getAscent()
56 */
57 public int getAscent() {
58 int ascent = 0;
59 for (int i = 0; i < fragments.size(); i++)
60 ascent = Math.max(ascent, (cast(FlowBox)fragments.get(i)).getAscent());
61 return ascent;
62 }
63
64 /**
65 * Returns the remaining width available for line content.
66 * @return the available width in pixels
67 */
68 int getAvailableWidth() {
69 if (recommendedWidth < 0)
70 return Integer.MAX_VALUE;
71 return recommendedWidth - getWidth();
72 }
73
74 int getBottomMargin() {
75 return 0;
76 }
77
78 /**
79 * @see dwtx.draw2d.text.FlowBox#getDescent()
80 */
81 public int getDescent() {
82 int descent = 0;
83 for (int i = 0; i < fragments.size(); i++)
84 descent = Math.max(descent, (cast(FlowBox)fragments.get(i)).getDescent());
85 return descent;
86 }
87
88 /**
89 * @return Returns the fragments.
90 */
91 List getFragments() {
92 return fragments;
93 }
94
95 int getTopMargin() {
96 return 0;
97 }
98
99 /**
100 * @return <code>true</code> if this box contains any fragments
101 */
102 public bool isOccupied() {
103 return !fragments.isEmpty();
104 }
105
106 /**
107 * @see dwtx.draw2d.text.FlowBox#requiresBidi()
108 */
109 public bool requiresBidi() {
110 for (Iterator iter = getFragments().iterator(); iter.hasNext();) {
111 FlowBox box = cast(FlowBox)iter.next();
112 if (box.requiresBidi())
113 return true;
114 }
115 return false;
116 }
117
118 }