/*
* Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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;
@SuppressWarnings("serial") // Superclass is not serializable across versions
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.
*/
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.
*/
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);
}
}
}