/*
 * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package com.apple.laf;

import java.awt.*;
import java.beans.PropertyChangeEvent;

import javax.swing.*;
import javax.swing.border.Border;
import javax.swing.plaf.basic.BasicSplitPaneDivider;

import apple.laf.*;
import apple.laf.JRSUIConstants.State;

import com.apple.laf.AquaUtils.LazyKeyedSingleton;
import com.apple.laf.AquaUtils.RecyclableSingleton;
import com.apple.laf.AquaUtils.RecyclableSingletonFromDefaultConstructor;

public class AquaSplitPaneDividerUI extends BasicSplitPaneDivider {
    final AquaPainter<JRSUIState> painter = AquaPainter.create(JRSUIStateFactory.getSplitPaneDivider());

    public AquaSplitPaneDividerUI(final AquaSplitPaneUI ui) {
        super(ui);
        setLayout(new AquaSplitPaneDividerUI.DividerLayout());
    }

    
Property change event, presumably from the JSplitPane, will message updateOrientation if necessary.
/** * Property change event, presumably from the JSplitPane, will message * updateOrientation if necessary. */
public void propertyChange(final PropertyChangeEvent e) { if (e.getSource() == splitPane) { final String propName = e.getPropertyName(); if ("enabled".equals(propName)) { final boolean enabled = splitPane.isEnabled(); if (leftButton != null) leftButton.setEnabled(enabled); if (rightButton != null) rightButton.setEnabled(enabled); } else if (JSplitPane.ORIENTATION_PROPERTY.equals(propName)) { // need to regenerate the buttons, since we bake the orientation into them if (rightButton != null) { remove(rightButton); rightButton = null; } if (leftButton != null) { remove(leftButton); leftButton = null; } oneTouchExpandableChanged(); } } super.propertyChange(e); } public int getMaxDividerSize() { return 10; }
Paints the divider.
/** * Paints the divider. */
public void paint(final Graphics g) { final Dimension size = getSize(); int x = 0; int y = 0; final boolean horizontal = splitPane.getOrientation() == SwingConstants.HORIZONTAL; //System.err.println("Size = " + size + " orientation horiz = " + horizontal); // size determines orientation final int maxSize = getMaxDividerSize(); boolean doPaint = true; if (horizontal) { if (size.height > maxSize) { final int diff = size.height - maxSize; y = diff / 2; size.height = maxSize; } if (size.height < 4) doPaint = false; } else { if (size.width > maxSize) { final int diff = size.width - maxSize; x = diff / 2; size.width = maxSize; } if (size.width < 4) doPaint = false; } if (doPaint) { painter.state.set(getState()); painter.paint(g, splitPane, x, y, size.width, size.height); } super.paint(g); // Ends up at Container.paint, which paints our JButton children } protected State getState() { return splitPane.isEnabled() ? State.ACTIVE : State.DISABLED; } protected JButton createLeftOneTouchButton() { return createButtonForDirection(getDirection(true)); } protected JButton createRightOneTouchButton() { return createButtonForDirection(getDirection(false)); } static final LazyKeyedSingleton<Integer, Image> directionArrows = new LazyKeyedSingleton<Integer, Image>() { protected Image getInstance(final Integer direction) { final Image arrowImage = AquaImageFactory.getArrowImageForDirection(direction); final int h = (arrowImage.getHeight(null) * 5) / 7; final int w = (arrowImage.getWidth(null) * 5) / 7; return AquaUtils.generateLightenedImage(arrowImage.getScaledInstance(w, h, Image.SCALE_SMOOTH), 50); } }; // separate static, because the divider needs to be serializable // see <rdar://problem/7590946> JSplitPane is not serializable when using Aqua look and feel static JButton createButtonForDirection(final int direction) { final JButton button = new JButton(new ImageIcon(directionArrows.get(Integer.valueOf(direction)))); button.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR)); button.setFocusPainted(false); button.setRequestFocusEnabled(false); button.setFocusable(false); button.setBorder(BorderFactory.createEmptyBorder(1, 1, 1, 1)); return button; } int getDirection(final boolean isLeft) { if (splitPane.getOrientation() == JSplitPane.HORIZONTAL_SPLIT) { return isLeft ? SwingConstants.WEST : SwingConstants.EAST; } return isLeft ? SwingConstants.NORTH : SwingConstants.SOUTH; } static final int kMaxPopupArrowSize = 9; protected class DividerLayout extends BasicSplitPaneDivider.DividerLayout { public void layoutContainer(final Container c) { final int maxSize = getMaxDividerSize(); final Dimension size = getSize(); if (leftButton == null || rightButton == null || c != AquaSplitPaneDividerUI.this) return; if (!splitPane.isOneTouchExpandable()) { leftButton.setBounds(-5, -5, 1, 1); rightButton.setBounds(-5, -5, 1, 1); return; } final int blockSize = Math.min(getDividerSize(), kMaxPopupArrowSize); // make it 1 less than divider, or kMaxPopupArrowSize // put them at the right or the bottom if (orientation == JSplitPane.VERTICAL_SPLIT) { int yPosition = 0; if (size.height > maxSize) { final int diff = size.height - maxSize; yPosition = diff / 2; } int xPosition = kMaxPopupArrowSize + ONE_TOUCH_OFFSET; rightButton.setBounds(xPosition, yPosition, kMaxPopupArrowSize, blockSize); xPosition -= (kMaxPopupArrowSize + ONE_TOUCH_OFFSET); leftButton.setBounds(xPosition, yPosition, kMaxPopupArrowSize, blockSize); } else { int xPosition = 0; if (size.width > maxSize) { final int diff = size.width - maxSize; xPosition = diff / 2; } int yPosition = kMaxPopupArrowSize + ONE_TOUCH_OFFSET; rightButton.setBounds(xPosition, yPosition, blockSize, kMaxPopupArrowSize); yPosition -= (kMaxPopupArrowSize + ONE_TOUCH_OFFSET); leftButton.setBounds(xPosition, yPosition, blockSize, kMaxPopupArrowSize); } } } public static Border getHorizontalSplitDividerGradientVariant() { return HorizontalSplitDividerGradientPainter.instance(); } static class HorizontalSplitDividerGradientPainter implements Border { private static final RecyclableSingleton<HorizontalSplitDividerGradientPainter> instance = new RecyclableSingletonFromDefaultConstructor<HorizontalSplitDividerGradientPainter>(HorizontalSplitDividerGradientPainter.class); static HorizontalSplitDividerGradientPainter instance() { return instance.get(); } final Color startColor = Color.white; final Color endColor = new Color(217, 217, 217); final Color borderLines = Color.lightGray; public Insets getBorderInsets(final Component c) { return new Insets(0, 0, 0, 0); } public boolean isBorderOpaque() { return true; } public void paintBorder(final Component c, final Graphics g, final int x, final int y, final int width, final int height) { if (!(g instanceof Graphics2D)) return; final Graphics2D g2d = (Graphics2D)g; final Color oldColor = g2d.getColor(); g2d.setPaint(new GradientPaint(0, 0, startColor, 0, height, endColor)); g2d.fillRect(x, y, width, height); g2d.setColor(borderLines); g2d.drawLine(x, y, x + width, y); g2d.drawLine(x, y + height - 1, x + width, y + height - 1); g2d.setColor(oldColor); } } }