001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
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011: * http://www.netbeans.org/cddl-gplv2.html
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014: * License. When distributing the software, include this License Header
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020: * License Header, with the fields enclosed by brackets [] replaced by
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026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
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040: */
041:
042: package org.jdesktop.layout;
043:
044: import java.awt.Container;
045: import javax.swing.JComponent;
046: import javax.swing.SwingConstants;
047:
048: /**
049: * An implementation of <code>LayoutStyle</code> for Gnome. This information
050: * comes from:
051: * http://developer.gnome.org/projects/gup/hig/2.0/design-window.html#window-layout-spacing
052: *
053: * @version $Revision$
054: */
055: class GnomeLayoutStyle extends LayoutStyle {
056: public int getPreferredGap(JComponent source, JComponent target,
057: int type, int position, Container parent) {
058: // Invoke super to check arguments.
059: super .getPreferredGap(source, target, type, position, parent);
060:
061: if (type == INDENT) {
062: if (position == SwingConstants.EAST
063: || position == SwingConstants.WEST) {
064: int gap = getButtonChildIndent(source, position);
065: if (gap != 0) {
066: return gap;
067: }
068: // Indent group members 12 pixels to denote hierarchy and
069: // association.
070: return 12;
071: }
072: // Treat vertical INDENT as RELATED
073: type = RELATED;
074: }
075: // Between labels and associated components, leave 12 horizontal
076: // pixels.
077: if (position == SwingConstants.EAST
078: || position == SwingConstants.WEST) {
079: boolean sourceLabel = (source.getUIClassID() == "LabelUI");
080: boolean targetLabel = (target.getUIClassID() == "LabelUI");
081: if ((sourceLabel && !targetLabel)
082: || (!sourceLabel && targetLabel)) {
083: return 12;
084: }
085: }
086: // As a basic rule of thumb, leave space between user
087: // interface components in increments of 6 pixels, going up as
088: // the relationship between related elements becomes more
089: // distant. For example, between icon labels and associated
090: // graphics within an icon, 6 pixels are adequate. Between
091: // labels and associated components, leave 12 horizontal
092: // pixels. For vertical spacing between groups of components,
093: // 18 pixels is adequate.
094: //
095: // The first part of this is handled automatically by Icon (which
096: // won't give you 6 pixels).
097: if (type == RELATED) {
098: return 6;
099: }
100: return 12;
101: }
102:
103: public int getContainerGap(JComponent component, int position,
104: Container parent) {
105: super .getContainerGap(component, position, parent);
106: // A general padding of 12 pixels is
107: // recommended between the contents of a dialog window and the
108: // window borders.
109: //
110: // Indent group members 12 pixels to denote hierarchy and association.
111: return 12;
112: }
113: }
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