Home

Contribute

Source code


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89

/*******************************************************************************
 * Copyright (c) 2009 THALES GLOBAL SERVICES.
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *    Obeo - initial API and implementation
 *******************************************************************************/
package org.eclipse.sirius.diagram.ui.business.internal.edit.helpers;

import org.eclipse.draw2d.PositionConstants;
import org.eclipse.draw2d.ToolbarLayout;
import org.eclipse.sirius.viewpoint.LabelAlignment;

/**
 * Utility class to retrieve diagram elements' {@link LabelAlignment} and
 * convert it into the appropriate Draw2D constants to implement the alignment.
 * 
 * @author pcdavid
 */
public final class LabelAlignmentHelper {
    private LabelAlignmentHelper() {
        // Prevent instantiation.
    }

    /**
     * Converts a {@link LabelAlignment} style value into the equivalent Draw2D
     * {@link PositionConstants} value, which can be used in
     * {@link org.eclipse.sirius.ext.gmf.runtime.gef.ui.figures.draw2d.ui.figures.SiriusWrapLabel}
     * s.
     * 
     * @param alignment
     *            the {@link LabelAlignment} to convert
     * @return the equivalent {@link PositionConstants} value
     */
    public static int getAsPositionConstant(final LabelAlignment alignment) {
        final int alignmentValue;
        switch (alignment) {
        case CENTER:
            alignmentValue = PositionConstants.CENTER;
            break;
        case LEFT:
            alignmentValue = PositionConstants.LEFT;
            break;
        case RIGHT:
            alignmentValue = PositionConstants.RIGHT;
            break;
        default:
            alignmentValue = PositionConstants.CENTER;
            break;
        }
        return alignmentValue;
    }

    /**
     * Converts a {@link LabelAlignment} style value into the equivalent
     * alignment constant to use in a
     * {@link org.eclipse.gmf.runtime.draw2d.ui.figures.ConstrainedToolbarLayout}
     * .
     * 
     * @param alignment
     *            the {@link LabelAlignment} to convert
     * @return the equivalent
     *         {@link org.eclipse.gmf.runtime.draw2d.ui.figures.ConstrainedToolbarLayout}
     *         minor alignment value
     */
    public static int getAsCTLMinorAlignment(final LabelAlignment alignment) {
        final int alignmentValue;
        switch (alignment) {
        case CENTER:
            alignmentValue = ToolbarLayout.ALIGN_CENTER;
            break;
        case LEFT:
            alignmentValue = ToolbarLayout.ALIGN_TOPLEFT;
            break;
        case RIGHT:
            alignmentValue = ToolbarLayout.ALIGN_BOTTOMRIGHT;
            break;
        default:
            alignmentValue = ToolbarLayout.ALIGN_CENTER;
            break;
        }
        return alignmentValue;
    }
}