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comparison dwtx/draw2d/CompoundBorder.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.CompoundBorder;
14
15 import dwt.dwthelper.utils;
16
17 import dwtx.draw2d.geometry.Dimension;
18 import dwtx.draw2d.geometry.Insets;
19
20 import dwtx.draw2d.AbstractBorder;
21 import dwtx.draw2d.Border;
22 import dwtx.draw2d.IFigure;
23 import dwtx.draw2d.Graphics;
24
25 /**
26 * CompoundBorder allows for the nesting of two borders. The nested borders are referred
27 * to as the <i>inner</i> and <i>outer</i> borders.
28 */
29 public class CompoundBorder
30 : AbstractBorder
31 {
32
33 /** The inner Border. */
34 protected Border inner;
35 /** The outer Border. */
36 protected Border outer;
37
38 /**
39 * Constructs a default CompoundBorder with no borders under it.
40 *
41 * @since 2.0
42 */
43 public this() { }
44
45 /**
46 * Constructs a CompoundBorder with the two borders specified as input.
47 *
48 * @param outer Border which is drawn on the outside
49 * @param inner Border which is drawn inside the outer border
50 *
51 * @since 2.0
52 */
53 public this(Border outer, Border inner) {
54 this.outer = outer;
55 this.inner = inner;
56 }
57
58 /**
59 * Returns the inner border of this CompoundBorder.
60 *
61 * @return The inner border
62 * @since 2.0
63 */
64 public Border getInnerBorder() {
65 return inner;
66 }
67
68 /**
69 * Returns the total insets required to hold both the inner and outer borders of this
70 * CompoundBorder.
71 *
72 * @param figure Figure for which this is the border
73 * @return The total insets for this border
74 * @since 2.0
75 */
76 public Insets getInsets(IFigure figure) {
77 Insets insets = null;
78 if (inner !is null)
79 insets = inner.getInsets(figure);
80 else
81 insets = new Insets();
82 if (outer !is null) {
83 Insets moreInsets = outer.getInsets(figure);
84 insets = insets.getAdded(moreInsets);
85 }
86 return insets;
87 }
88
89 /**
90 * @see dwtx.draw2d.Border#getPreferredSize(IFigure)
91 */
92 public Dimension getPreferredSize(IFigure fig) {
93 Dimension prefSize = new Dimension(inner.getPreferredSize(fig));
94 Insets outerInsets = outer.getInsets(fig);
95 prefSize.expand(outerInsets.getWidth(), outerInsets.getHeight());
96 prefSize.union_(outer.getPreferredSize(fig));
97 return prefSize;
98 }
99
100 /**
101 * Returns the outer border of this CompoundBorder.
102 *
103 * @return The outer border
104 * @since 2.0
105 */
106 public Border getOuterBorder() {
107 return outer;
108 }
109
110 /**
111 * Returns <code>true</code> if this border is opaque. Return value is dependent on the
112 * opaque state of both the borders it contains. Both borders have to be opaque for this
113 * border to be opaque. In the absence of any of the borders, this border is not opaque.
114 *
115 * @return <code>true</code> if this border is opaque
116 */
117 public bool isOpaque() {
118 return ((inner !is null) ? inner.isOpaque() : false)
119 && ((outer !is null) ? outer.isOpaque() : false);
120 }
121
122 /**
123 * @see dwtx.draw2d.Border#paint(IFigure, Graphics, Insets)
124 */
125 public void paint(IFigure figure, Graphics g, Insets insets) {
126 if (outer !is null) {
127 g.pushState();
128 outer.paint(figure, g, insets);
129 g.popState();
130
131 insets = insets.getAdded(outer.getInsets(figure));
132 }
133 if (inner !is null)
134 inner.paint(figure, g, insets);
135 }
136
137 }