修改 JSplitPane 展开、隐藏按钮的样式位置
package com.easyfeeling.ui.skin;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Insets;
import java.awt.LayoutManager;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JSplitPane;
import javax.swing.UIManager;
import javax.swing.border.Border;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.basic.BasicSplitPaneDivider;
import javax.swing.plaf.basic.BasicSplitPaneUI;
/**
*
* @author lgh
*/
public class SearchSplitPaneUI extends BasicSplitPaneUI {
private static final Color BG_COLOR = Color.BLACK;
private static final SearchSplitPaneUI cornerButtonUI = new SearchSplitPaneUI();
public SearchSplitPaneUI() {
super();
}
public static ComponentUI createUI(JComponent c) {
return new SearchSplitPaneUI();
}
/**
* Creates the default divider.
*/
@Override
public BasicSplitPaneDivider createDefaultDivider() {
return new MyBasicSplitPaneDivider(this);
}
private class MyBasicSplitPaneDivider extends BasicSplitPaneDivider {
private int oneTouchSize, oneTouchOffset;
boolean centerOneTouchButtons;
//center空白区域
private int x1, y1;
@SuppressWarnings("unchecked")
public MyBasicSplitPaneDivider(SearchSplitPaneUI ui) {
super(ui);
// oneTouchSize = DefaultLookup.getInt(ui.getSplitPane(), ui,
// "SplitPane.oneTouchButtonSize", ONE_TOUCH_SIZE);
// oneTouchOffset = DefaultLookup.getInt(ui.getSplitPane(), ui,
// "SplitPane.oneTouchButtonOffset", ONE_TOUCH_OFFSET);
// centerOneTouchButtons = DefaultLookup.getBoolean(ui.getSplitPane(),
// ui, "SplitPane.centerOneTouchButtons", true);
oneTouchSize = ONE_TOUCH_SIZE;
oneTouchOffset = ONE_TOUCH_OFFSET;
centerOneTouchButtons = true;
setLayout(new DividerLayout());
setBasicSplitPaneUI(ui);
orientation = splitPane.getOrientation();
setCursor((orientation == JSplitPane.HORIZONTAL_SPLIT) ? Cursor.getPredefinedCursor(Cursor.E_RESIZE_CURSOR) : Cursor.getPredefinedCursor(Cursor.S_RESIZE_CURSOR));
setBackground(UIManager.getColor("SplitPane.background"));
// super(ui);
// this.setBackground(BG_COLOR);
// this.setPreferredSize(getSize());
}
/**
* Creates and return an instance of JButton that can be used to
* collapse the right component in the split pane.
*/
@Override
protected JButton createRightOneTouchButton() {
JButton b = new JButton() {
public void setBorder(Border border) {
}
@Override
public void paint(Graphics g) {
if (splitPane != null) {
int[] xs = new int[3];
int[] ys = new int[3];
int blockSize;
// Fill the background first ...
g.setColor(Color.WHITE);
g.fillRect(0, 0, this.getWidth(),
this.getHeight());
// ... then draw the arrow.
if (orientation == JSplitPane.VERTICAL_SPLIT) {
blockSize = Math.min(getHeight(), oneTouchSize);
xs[0] = blockSize;
xs[1] = blockSize << 1;
xs[2] = 0;
ys[0] = blockSize;
ys[1] = ys[2] = 0;
} else {
blockSize = Math.min(getWidth(), oneTouchSize);
xs[0] = xs[2] = 0;
xs[1] = blockSize;
ys[0] = 0;
ys[1] = blockSize;
ys[2] = blockSize << 1;
}
g.setColor(BG_COLOR);
g.fillPolygon(xs, ys, 3);
}
}
// Don't want the button to participate in focus traversable.
public boolean isFocusTraversable() {
return false;
}
};
b.setMinimumSize(new Dimension(oneTouchSize, oneTouchSize));
b.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
b.setFocusPainted(false);
b.setBorderPainted(false);
b.setRequestFocusEnabled(false);
return b;
}
/**
* Creates and return an instance of JButton that can be used to
* collapse the left component in the split pane.
*/
protected JButton createLeftOneTouchButton() {
JButton b = new JButton() {
public void setBorder(Border b) {
}
public void paint(Graphics g) {
if (splitPane != null) {
int[] xs = new int[3];
int[] ys = new int[3];
int blockSize;
// Fill the background first ...
g.setColor(Color.WHITE);
g.fillRect(0, 0, this.getWidth(),
this.getHeight());
// ... then draw the arrow.
g.setColor(BG_COLOR);
if (orientation == JSplitPane.VERTICAL_SPLIT) {
blockSize = Math.min(getHeight(), oneTouchSize);
xs[0] = blockSize;
xs[1] = 0;
xs[2] = blockSize << 1;
ys[0] = 0;
ys[1] = ys[2] = blockSize;
g.drawPolygon(xs, ys, 3); // Little trick to make the
// arrows of equal size
} else {
blockSize = Math.min(getWidth(), oneTouchSize);
xs[0] = xs[2] = blockSize;
xs[1] = 0;
ys[0] = 0;
ys[1] = blockSize;
ys[2] = blockSize << 1;
}
g.fillPolygon(xs, ys, 3);
}
}
// Don't want the button to participate in focus traversable.
public boolean isFocusTraversable() {
return false;
}
};
b.setMinimumSize(new Dimension(oneTouchSize, oneTouchSize));
b.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
b.setFocusPainted(false);
b.setBorderPainted(false);
b.setRequestFocusEnabled(false);
return b;
}
/**
* Used to layout a <code>BasicSplitPaneDivider</code>.
* Layout for the divider
* involves appropriately moving the left/right buttons around.
* <p>
*/
protected class DividerLayout implements LayoutManager {
public void layoutContainer(Container c) {
if (leftButton != null && rightButton != null) {
if (splitPane.isOneTouchExpandable()) {
Insets insets = getInsets();
if (orientation == JSplitPane.VERTICAL_SPLIT) {
int extraX = (insets != null) ? insets.left : 0;
int blockSize = getHeight();
if (insets != null) {
blockSize -= (insets.top + insets.bottom);
blockSize = Math.max(blockSize, 0);
}
blockSize = Math.min(blockSize, oneTouchSize);
int y = (c.getSize().height - blockSize) / 2;
if (!centerOneTouchButtons) {
y = (insets != null) ? insets.top : 0;
extraX = 0;
}
int width = (int) MyBasicSplitPaneDivider.this.getSize().getWidth();
x1 = width / 2 - oneTouchSize;
leftButton.setBounds(extraX - oneTouchOffset + width / 2, y,
blockSize * 2, blockSize);
rightButton.setBounds(extraX - oneTouchOffset +
oneTouchSize * 2 + width / 2, y,
blockSize * 2, blockSize);
} else {
int extraY = (insets != null) ? insets.top : 0;
int blockSize = getWidth();
if (insets != null) {
blockSize -= (insets.left + insets.right);
blockSize = Math.max(blockSize, 0);
}
blockSize = Math.min(blockSize, oneTouchSize);
int x = (c.getSize().width - blockSize) / 2;
if (!centerOneTouchButtons) {
x = (insets != null) ? insets.left : 0;
extraY = 0;
}
int height = (int) MyBasicSplitPaneDivider.this.getSize().getHeight();
y1 = height / 2 - oneTouchSize;
leftButton.setBounds(x, extraY - oneTouchOffset + height / 2,
blockSize, blockSize * 2);
rightButton.setBounds(x, extraY - oneTouchOffset +
oneTouchSize * 2 + height / 2, blockSize,
blockSize * 2);
}
} else {
leftButton.setBounds(-5, -5, 1, 1);
rightButton.setBounds(-5, -5, 1, 1);
}
}
}
public Dimension minimumLayoutSize(Container c) {
// NOTE: This isn't really used, refer to
// BasicSplitPaneDivider.getPreferredSize for the reason.
// I leave it in hopes of having this used at some point.
if (splitPane == null) {
return new Dimension(0, 0);
}
Dimension buttonMinSize = null;
if (splitPane.isOneTouchExpandable() && leftButton != null) {
buttonMinSize = leftButton.getMinimumSize();
}
Insets insets = getInsets();
int width = getDividerSize();
int height = width;
if (orientation == JSplitPane.VERTICAL_SPLIT) {
if (buttonMinSize != null) {
int size = buttonMinSize.height;
if (insets != null) {
size += insets.top + insets.bottom;
}
height = Math.max(height, size);
}
width = 1;
} else {
if (buttonMinSize != null) {
int size = buttonMinSize.width;
if (insets != null) {
size += insets.left + insets.right;
}
width = Math.max(width, size);
}
height = 1;
}
return new Dimension(width, height);
}
public Dimension preferredLayoutSize(Container c) {
return minimumLayoutSize(c);
}
public void removeLayoutComponent(Component c) {
}
public void addLayoutComponent(String string, Component c) {
}
} // End of class BasicSplitPaneDivider.DividerLayout
}
}