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comparison org.eclipse.draw2d/src/org/eclipse/draw2d/text/InlineFlow.d @ 12:bc29606a740c

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Added dwt-addons in original directory structure of eclipse.org
author Frank Benoit <benoit@tionex.de>
date Sat, 14 Mar 2009 18:23:29 +0100
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11:43904fec5dca 12:bc29606a740c
1 /*******************************************************************************
2 * Copyright (c) 2000, 2008 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 org.eclipse.draw2d.text.InlineFlow;
14
15 import java.lang.all;
16
17 import org.eclipse.swt.SWT;
18 import org.eclipse.draw2d.Border;
19 import org.eclipse.draw2d.ColorConstants;
20 import org.eclipse.draw2d.Graphics;
21 import org.eclipse.draw2d.geometry.Rectangle;
22 import org.eclipse.draw2d.text.FlowFigure;
23 import org.eclipse.draw2d.text.FlowFigureLayout;
24 import org.eclipse.draw2d.text.FlowBox;
25 import org.eclipse.draw2d.text.InlineFlowLayout;
26 import org.eclipse.draw2d.text.FlowBorder;
27
28 /**
29 * A <code>FlowFigure</code> represented by multiple <code>LineBox</code> fragments. An
30 * <code>InlineFlow</code>'s parent must be either a {@link BlockFlow} or another
31 * InlineFlow.
32 *
33 * <P>An InlineFlow may contain other InlineFlow figures.
34 *
35 * <P>WARNING: This class is not intended to be subclassed by clients.
36 * @author Randy Hudson
37 * @since 2.0
38 */
39 public class InlineFlow : FlowFigure {
40
41 List fragments;
42
43 public this(){
44 fragments = new ArrayList(1);
45 }
46
47 /**
48 * Iterates over the children to find the width before a line-break is encountered.
49 * @see org.eclipse.draw2d.text.FlowFigure#addLeadingWordRequirements(int[])
50 */
51 public bool addLeadingWordRequirements(int[] width) {
52 Iterator iter = getChildren().iterator();
53 while (iter.hasNext()) {
54 if ((cast(FlowFigure)iter.next()).addLeadingWordRequirements(width))
55 return true;
56 }
57 return false;
58 }
59
60 /**
61 * Extended to return false if the point is not also contained by at least one fragment.
62 * @return <code>true</code> if a fragment contains the given point
63 * @param x the relative x coordinate
64 * @param y the relative y coordinate
65 */
66 public bool containsPoint(int x, int y) {
67 if (super.containsPoint(x, y)) {
68 List frags = getFragments();
69 for (int i = 0; i < frags.size(); i++)
70 if ((cast(FlowBox)frags.get(i)).containsPoint(x, y))
71 return true;
72 }
73
74 return false;
75 }
76
77 /**
78 * @see FlowFigure#createDefaultFlowLayout()
79 */
80 protected FlowFigureLayout createDefaultFlowLayout() {
81 return new InlineFlowLayout(this);
82 }
83
84 /**
85 * Returns the <code>FlowBox</code> fragments contained in this InlineFlow. The returned
86 * list should not be modified.
87 * @return The fragments
88 */
89 public List getFragments() {
90 return fragments;
91 }
92
93 /**
94 * Overridden to paint a {@link FlowBorder} if present, and draw selection. The border is
95 * painted first, followed by selection which is generally done in XOR, which still allows
96 * the border to be seen.
97 * @param graphics the graphics
98 */
99 protected void paintBorder(Graphics graphics) {
100 if (getBorder() !is null) {
101 FlowBorder fb = cast(FlowBorder)getBorder();
102 List frags = getFragments();
103 Rectangle where = new Rectangle();
104 int sides;
105 for (int i = 0; i < frags.size(); i++) {
106 FlowBox box = cast(FlowBox)frags.get(i);
107
108 where.x = box.getX();
109 where.width = box.getWidth();
110 where.y = -box.getAscentWithBorder();
111 where.height = box.getDescentWithBorder() - where.y;
112 where.y += box.getBaseline();
113 sides = 0;
114 if (i is 0)
115 sides = SWT.LEAD;
116 if (i is frags.size() - 1)
117 sides |= SWT.TRAIL;
118 fb.paint(this, graphics, where, sides);
119 }
120 graphics.restoreState();
121 }
122 if (selectionStart !is -1)
123 paintSelection(graphics);
124 }
125
126 /**
127 * Renders the XOR selection rectangles to the graphics.
128 * @param graphics the graphics to paint on
129 * @since 3.1
130 */
131 protected void paintSelection(Graphics graphics) {
132 graphics.restoreState();
133 graphics.setXORMode(true);
134 graphics.setBackgroundColor(ColorConstants.white);
135 List list = getFragments();
136 FlowBox box;
137 for (int i = 0; i < list.size(); i++) {
138 box = cast(FlowBox)list.get(i);
139 int top = box.getLineRoot().getVisibleTop();
140 int bottom = box.getLineRoot().getVisibleBottom();
141 graphics.fillRectangle(box.getX(), top, box.getWidth(), bottom - top);
142 }
143 }
144
145 /**
146 * @see FlowFigure#postValidate()
147 */
148 public void postValidate() {
149 List list = getFragments();
150 FlowBox box;
151 int left = Integer.MAX_VALUE, top = left;
152 int right = Integer.MIN_VALUE, bottom = right;
153
154 for (int i = 0; i < list.size(); i++) {
155 box = cast(FlowBox)list.get(i);
156 left = Math.min(left, box.getX());
157 right = Math.max(right, box.getX() + box.getWidth());
158 top = Math.min(top, box.getLineRoot().getVisibleTop());
159 bottom = Math.max(bottom, box.getLineRoot().getVisibleBottom());
160 }
161
162 setBounds(new Rectangle(left, top, right - left, bottom - top));
163 repaint();
164 list = getChildren();
165 for (int i = 0; i < list.size(); i++)
166 (cast(FlowFigure)list.get(i)).postValidate();
167 }
168
169 /**
170 * Overridden to assert that only {@link FlowBorder} is used. <code>null</code> is still a
171 * valid value as well.
172 * @param border <code>null</code> or a FlowBorder
173 */
174 public void setBorder(Border border) {
175 if (border is null || null !is cast(FlowBorder)border )
176 super.setBorder(border);
177 else
178 throw new RuntimeException("Border must be an instance of FlowBorder"); //$NON-NLS-1$
179 }
180
181 }