JDK14/Java14源码在线阅读
JDK14/Java14源码在线阅读 /
java.desktop /
share /
classes /
javax /
swing /
plaf /
metal /
MetalTabbedPaneUI.java
/*
* Copyright (c) 1998, 2015, 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
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package javax.swing.plaf.metal;
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.plaf.*;
import java.io.Serializable;
import javax.swing.plaf.basic.BasicTabbedPaneUI;
/**
* The Metal subclass of BasicTabbedPaneUI.
* <p>
* <strong>Warning:</strong>
* Serialized objects of this class will not be compatible with
* future Swing releases. The current serialization support is
* appropriate for short term storage or RMI between applications running
* the same version of Swing. As of 1.4, support for long term storage
* of all JavaBeans™
* has been added to the <code>java.beans</code> package.
* Please see {@link java.beans.XMLEncoder}.
*
* @author Tom Santos
*/
@SuppressWarnings("serial") // Same-version serialization only
public class MetalTabbedPaneUI extends BasicTabbedPaneUI {
/**
* The minimum width of a pane.
*/
protected int minTabWidth = 40;
// Background color for unselected tabs that don't have an explicitly
// set color.
private Color unselectedBackground;
/**
* The color of tab's background.
*/
protected Color tabAreaBackground;
/**
* The color of the selected pane.
*/
protected Color selectColor;
/**
* The color of the highlight.
*/
protected Color selectHighlight;
private boolean tabsOpaque = true;
// Whether or not we're using ocean. This is cached as it is used
// extensively during painting.
private boolean ocean;
// Selected border color for ocean.
private Color oceanSelectedBorderColor;
/**
* Constructs {@code MetalTabbedPaneUI}.
*
* @param x a component
* @return an instance of {@code MetalTabbedPaneUI}
*/
public static ComponentUI createUI( JComponent x ) {
return new MetalTabbedPaneUI();
}
protected LayoutManager createLayoutManager() {
if (tabPane.getTabLayoutPolicy() == JTabbedPane.SCROLL_TAB_LAYOUT) {
return super.createLayoutManager();
}
return new TabbedPaneLayout();
}
protected void installDefaults() {
super.installDefaults();
tabAreaBackground = UIManager.getColor("TabbedPane.tabAreaBackground");
selectColor = UIManager.getColor("TabbedPane.selected");
selectHighlight = UIManager.getColor("TabbedPane.selectHighlight");
tabsOpaque = UIManager.getBoolean("TabbedPane.tabsOpaque");
unselectedBackground = UIManager.getColor(
"TabbedPane.unselectedBackground");
ocean = MetalLookAndFeel.usingOcean();
if (ocean) {
oceanSelectedBorderColor = UIManager.getColor(
"TabbedPane.borderHightlightColor");
}
}
protected void paintTabBorder( Graphics g, int tabPlacement,
int tabIndex, int x, int y, int w, int h,
boolean isSelected) {
int bottom = y + (h-1);
int right = x + (w-1);
switch ( tabPlacement ) {
case LEFT:
paintLeftTabBorder(tabIndex, g, x, y, w, h, bottom, right, isSelected);
break;
case BOTTOM:
paintBottomTabBorder(tabIndex, g, x, y, w, h, bottom, right, isSelected);
break;
case RIGHT:
paintRightTabBorder(tabIndex, g, x, y, w, h, bottom, right, isSelected);
break;
case TOP:
default:
paintTopTabBorder(tabIndex, g, x, y, w, h, bottom, right, isSelected);
}
}
/**
* Paints the top tab border.
*
* @param tabIndex a tab index
* @param g an instance of {@code Graphics}
* @param x an X coordinate
* @param y an Y coordinate
* @param w a width
* @param h a height
* @param btm bottom
* @param rght right
* @param isSelected a selection
*/
protected void paintTopTabBorder( int tabIndex, Graphics g,
int x, int y, int w, int h,
int btm, int rght,
boolean isSelected ) {
int currentRun = getRunForTab( tabPane.getTabCount(), tabIndex );
int lastIndex = lastTabInRun( tabPane.getTabCount(), currentRun );
int firstIndex = tabRuns[ currentRun ];
boolean leftToRight = MetalUtils.isLeftToRight(tabPane);
int selectedIndex = tabPane.getSelectedIndex();
int bottom = h - 1;
int right = w - 1;
//
// Paint Gap
//
if (shouldFillGap( currentRun, tabIndex, x, y ) ) {
g.translate( x, y );
if ( leftToRight ) {
g.setColor( getColorForGap( currentRun, x, y + 1 ) );
g.fillRect( 1, 0, 5, 3 );
g.fillRect( 1, 3, 2, 2 );
} else {
g.setColor( getColorForGap( currentRun, x + w - 1, y + 1 ) );
g.fillRect( right - 5, 0, 5, 3 );
g.fillRect( right - 2, 3, 2, 2 );
}
g.translate( -x, -y );
}
g.translate( x, y );
//
// Paint Border
//
if (ocean && isSelected) {
g.setColor(oceanSelectedBorderColor);
}
else {
g.setColor( darkShadow );
}
if ( leftToRight ) {
// Paint slant
g.drawLine( 1, 5, 6, 0 );
// Paint top
g.drawLine( 6, 0, right, 0 );
// Paint right
if ( tabIndex==lastIndex ) {
// last tab in run
g.drawLine( right, 1, right, bottom );
}
if (ocean && tabIndex - 1 == selectedIndex &&
currentRun == getRunForTab(
tabPane.getTabCount(), selectedIndex)) {
g.setColor(oceanSelectedBorderColor);
}
// Paint left
if ( tabIndex != tabRuns[ runCount - 1 ] ) {
// not the first tab in the last run
if (ocean && isSelected) {
g.drawLine(0, 6, 0, bottom);
g.setColor(darkShadow);
g.drawLine(0, 0, 0, 5);
}
else {
g.drawLine( 0, 0, 0, bottom );
}
} else {
// the first tab in the last run
g.drawLine( 0, 6, 0, bottom );
}
} else {
// Paint slant
g.drawLine( right - 1, 5, right - 6, 0 );
// Paint top
g.drawLine( right - 6, 0, 0, 0 );
// Paint left
if ( tabIndex==lastIndex ) {
// last tab in run
g.drawLine( 0, 1, 0, bottom );
}
// Paint right
if (ocean && tabIndex - 1 == selectedIndex &&
currentRun == getRunForTab(
tabPane.getTabCount(), selectedIndex)) {
g.setColor(oceanSelectedBorderColor);
g.drawLine(right, 0, right, bottom);
}
else if (ocean && isSelected) {
g.drawLine(right, 6, right, bottom);
if (tabIndex != 0) {
g.setColor(darkShadow);
g.drawLine(right, 0, right, 5);
}
}
else {
if ( tabIndex != tabRuns[ runCount - 1 ] ) {
// not the first tab in the last run
g.drawLine( right, 0, right, bottom );
} else {
// the first tab in the last run
g.drawLine( right, 6, right, bottom );
}
}
}
//
// Paint Highlight
//
g.setColor( isSelected ? selectHighlight : highlight );
if ( leftToRight ) {
// Paint slant
g.drawLine( 1, 6, 6, 1 );
// Paint top
g.drawLine( 6, 1, (tabIndex == lastIndex) ? right - 1 : right, 1 );
// Paint left
g.drawLine( 1, 6, 1, bottom );
// paint highlight in the gap on tab behind this one
// on the left end (where they all line up)
if ( tabIndex==firstIndex && tabIndex!=tabRuns[runCount - 1] ) {
// first tab in run but not first tab in last run
if (tabPane.getSelectedIndex()==tabRuns[currentRun+1]) {
// tab in front of selected tab
g.setColor( selectHighlight );
}
else {
// tab in front of normal tab
g.setColor( highlight );
}
g.drawLine( 1, 0, 1, 4 );
}
} else {
// Paint slant
g.drawLine( right - 1, 6, right - 6, 1 );
// Paint top
g.drawLine( right - 6, 1, 1, 1 );
// Paint left
if ( tabIndex==lastIndex ) {
// last tab in run
g.drawLine( 1, 1, 1, bottom );
} else {
g.drawLine( 0, 1, 0, bottom );
}
}
g.translate( -x, -y );
}
/**
* Returns {@code true} if the gap should be filled.
*
* @param currentRun the current run
* @param tabIndex the tab index
* @param x an X coordinate
* @param y an Y coordinate
* @return {@code true} if the gap should be filled
*/
protected boolean shouldFillGap( int currentRun, int tabIndex, int x, int y ) {
boolean result = false;
if (!tabsOpaque) {
return false;
}
if ( currentRun == runCount - 2 ) { // If it's the second to last row.
Rectangle lastTabBounds = getTabBounds( tabPane, tabPane.getTabCount() - 1 );
Rectangle tabBounds = getTabBounds( tabPane, tabIndex );
if (MetalUtils.isLeftToRight(tabPane)) {
int lastTabRight = lastTabBounds.x + lastTabBounds.width - 1;
// is the right edge of the last tab to the right
// of the left edge of the current tab?
if ( lastTabRight > tabBounds.x + 2 ) {
return true;
}
} else {
int lastTabLeft = lastTabBounds.x;
int currentTabRight = tabBounds.x + tabBounds.width - 1;
// is the left edge of the last tab to the left
// of the right edge of the current tab?
if ( lastTabLeft < currentTabRight - 2 ) {
return true;
}
}
} else {
// fill in gap for all other rows except last row
result = currentRun != runCount - 1;
}
return result;
}
/**
* Returns the color of the gap.
*
* @param currentRun the current run
* @param x an X coordinate
* @param y an Y coordinate
* @return the color of the gap
*/
protected Color getColorForGap( int currentRun, int x, int y ) {
final int shadowWidth = 4;
int selectedIndex = tabPane.getSelectedIndex();
int startIndex = tabRuns[ currentRun + 1 ];
int endIndex = lastTabInRun( tabPane.getTabCount(), currentRun + 1 );
int tabOverGap = -1;
// Check each tab in the row that is 'on top' of this row
for ( int i = startIndex; i <= endIndex; ++i ) {
Rectangle tabBounds = getTabBounds( tabPane, i );
int tabLeft = tabBounds.x;
int tabRight = (tabBounds.x + tabBounds.width) - 1;
// Check to see if this tab is over the gap
if ( MetalUtils.isLeftToRight(tabPane) ) {
if ( tabLeft <= x && tabRight - shadowWidth > x ) {
return selectedIndex == i ? selectColor : getUnselectedBackgroundAt( i );
}
}
else {
if ( tabLeft + shadowWidth < x && tabRight >= x ) {
return selectedIndex == i ? selectColor : getUnselectedBackgroundAt( i );
}
}
}
return tabPane.getBackground();
}
/**
* Paints the left tab border.
*
* @param tabIndex a tab index
* @param g an instance of {@code Graphics}
* @param x an X coordinate
* @param y an Y coordinate
* @param w a width
* @param h a height
* @param btm bottom
* @param rght right
* @param isSelected a selection
*/
protected void paintLeftTabBorder( int tabIndex, Graphics g,
int x, int y, int w, int h,
int btm, int rght,
boolean isSelected ) {
int tabCount = tabPane.getTabCount();
int currentRun = getRunForTab( tabCount, tabIndex );
int lastIndex = lastTabInRun( tabCount, currentRun );
int firstIndex = tabRuns[ currentRun ];
g.translate( x, y );
int bottom = h - 1;
int right = w - 1;
//
// Paint part of the tab above
//
if ( tabIndex != firstIndex && tabsOpaque ) {
g.setColor( tabPane.getSelectedIndex() == tabIndex - 1 ?
selectColor :
getUnselectedBackgroundAt( tabIndex - 1 ) );
g.fillRect( 2, 0, 4, 3 );
g.drawLine( 2, 3, 2, 3 );
}
//
// Paint Highlight
//
if (ocean) {
g.setColor(isSelected ? selectHighlight :
MetalLookAndFeel.getWhite());
}
else {
g.setColor( isSelected ? selectHighlight : highlight );
}
// Paint slant
g.drawLine( 1, 6, 6, 1 );
// Paint left
g.drawLine( 1, 6, 1, bottom );
// Paint top
g.drawLine( 6, 1, right, 1 );
if ( tabIndex != firstIndex ) {
if (tabPane.getSelectedIndex() == tabIndex - 1) {
g.setColor(selectHighlight);
} else {
g.setColor(ocean ? MetalLookAndFeel.getWhite() : highlight);
}
g.drawLine( 1, 0, 1, 4 );
}
//
// Paint Border
//
if (ocean) {
if (isSelected) {
g.setColor(oceanSelectedBorderColor);
}
else {
g.setColor( darkShadow );
}
}
else {
g.setColor( darkShadow );
}
// Paint slant
g.drawLine( 1, 5, 6, 0 );
// Paint top
g.drawLine( 6, 0, right, 0 );
// Paint bottom
if ( tabIndex == lastIndex ) {
g.drawLine( 0, bottom, right, bottom );
}
// Paint left
if (ocean) {
if (tabPane.getSelectedIndex() == tabIndex - 1) {
g.drawLine(0, 5, 0, bottom);
g.setColor(oceanSelectedBorderColor);
g.drawLine(0, 0, 0, 5);
}
else if (isSelected) {
g.drawLine( 0, 6, 0, bottom );
if (tabIndex != 0) {
g.setColor(darkShadow);
g.drawLine(0, 0, 0, 5);
}
}
else if ( tabIndex != firstIndex ) {
g.drawLine( 0, 0, 0, bottom );
} else {
g.drawLine( 0, 6, 0, bottom );
}
}
else { // metal
if ( tabIndex != firstIndex ) {
g.drawLine( 0, 0, 0, bottom );
} else {
g.drawLine( 0, 6, 0, bottom );
}
}
g.translate( -x, -y );
}
/**
* Paints the bottom tab border.
*
* @param tabIndex a tab index
* @param g an instance of {@code Graphics}
* @param x an X coordinate
* @param y an Y coordinate
* @param w a width
* @param h a height
* @param btm bottom
* @param rght right
* @param isSelected a selection
*/
protected void paintBottomTabBorder( int tabIndex, Graphics g,
int x, int y, int w, int h,
int btm, int rght,
boolean isSelected ) {
int tabCount = tabPane.getTabCount();
int currentRun = getRunForTab( tabCount, tabIndex );
int lastIndex = lastTabInRun( tabCount, currentRun );
int firstIndex = tabRuns[ currentRun ];
boolean leftToRight = MetalUtils.isLeftToRight(tabPane);
int bottom = h - 1;
int right = w - 1;
//
// Paint Gap
//
if ( shouldFillGap( currentRun, tabIndex, x, y ) ) {
g.translate( x, y );
if ( leftToRight ) {
g.setColor( getColorForGap( currentRun, x, y ) );
g.fillRect( 1, bottom - 4, 3, 5 );
g.fillRect( 4, bottom - 1, 2, 2 );
} else {
g.setColor( getColorForGap( currentRun, x + w - 1, y ) );
g.fillRect( right - 3, bottom - 3, 3, 4 );
g.fillRect( right - 5, bottom - 1, 2, 2 );
g.drawLine( right - 1, bottom - 4, right - 1, bottom - 4 );
}
g.translate( -x, -y );
}
g.translate( x, y );
//
// Paint Border
//
if (ocean && isSelected) {
g.setColor(oceanSelectedBorderColor);
}
else {
g.setColor( darkShadow );
}
if ( leftToRight ) {
// Paint slant
g.drawLine( 1, bottom - 5, 6, bottom );
// Paint bottom
g.drawLine( 6, bottom, right, bottom );
// Paint right
if ( tabIndex == lastIndex ) {
g.drawLine( right, 0, right, bottom );
}
// Paint left
if (ocean && isSelected) {
g.drawLine(0, 0, 0, bottom - 6);
if ((currentRun == 0 && tabIndex != 0) ||
(currentRun > 0 && tabIndex != tabRuns[currentRun - 1])) {
g.setColor(darkShadow);
g.drawLine(0, bottom - 5, 0, bottom);
}
}
else {
if (ocean && tabIndex == tabPane.getSelectedIndex() + 1) {
g.setColor(oceanSelectedBorderColor);
}
if ( tabIndex != tabRuns[ runCount - 1 ] ) {
g.drawLine( 0, 0, 0, bottom );
} else {
g.drawLine( 0, 0, 0, bottom - 6 );
}
}
} else {
// Paint slant
g.drawLine( right - 1, bottom - 5, right - 6, bottom );
// Paint bottom
g.drawLine( right - 6, bottom, 0, bottom );
// Paint left
if ( tabIndex==lastIndex ) {
// last tab in run
g.drawLine( 0, 0, 0, bottom );
}
// Paint right
if (ocean && tabIndex == tabPane.getSelectedIndex() + 1) {
g.setColor(oceanSelectedBorderColor);
g.drawLine(right, 0, right, bottom);
}
else if (ocean && isSelected) {
g.drawLine(right, 0, right, bottom - 6);
if (tabIndex != firstIndex) {
g.setColor(darkShadow);
g.drawLine(right, bottom - 5, right, bottom);
}
}
else if ( tabIndex != tabRuns[ runCount - 1 ] ) {
// not the first tab in the last run
g.drawLine( right, 0, right, bottom );
} else {
// the first tab in the last run
g.drawLine( right, 0, right, bottom - 6 );
}
}
//
// Paint Highlight
//
g.setColor( isSelected ? selectHighlight : highlight );
if ( leftToRight ) {
// Paint slant
g.drawLine( 1, bottom - 6, 6, bottom - 1 );
// Paint left
g.drawLine( 1, 0, 1, bottom - 6 );
// paint highlight in the gap on tab behind this one
// on the left end (where they all line up)
if ( tabIndex==firstIndex && tabIndex!=tabRuns[runCount - 1] ) {
// first tab in run but not first tab in last run
if (tabPane.getSelectedIndex()==tabRuns[currentRun+1]) {
// tab in front of selected tab
g.setColor( selectHighlight );
}
else {
// tab in front of normal tab
g.setColor( highlight );
}
g.drawLine( 1, bottom - 4, 1, bottom );
}
} else {
// Paint left
if ( tabIndex==lastIndex ) {
// last tab in run
g.drawLine( 1, 0, 1, bottom - 1 );
} else {
g.drawLine( 0, 0, 0, bottom - 1 );
}
}
g.translate( -x, -y );
}
/**
* Paints the right tab border.
*
* @param tabIndex a tab index
* @param g an instance of {@code Graphics}
* @param x an X coordinate
* @param y an Y coordinate
* @param w a width
* @param h a height
* @param btm bottom
* @param rght right
* @param isSelected a selection
*/
protected void paintRightTabBorder( int tabIndex, Graphics g,
int x, int y, int w, int h,
int btm, int rght,
boolean isSelected ) {
int tabCount = tabPane.getTabCount();
int currentRun = getRunForTab( tabCount, tabIndex );
int lastIndex = lastTabInRun( tabCount, currentRun );
int firstIndex = tabRuns[ currentRun ];
g.translate( x, y );
int bottom = h - 1;
int right = w - 1;
//
// Paint part of the tab above
//
if ( tabIndex != firstIndex && tabsOpaque ) {
g.setColor( tabPane.getSelectedIndex() == tabIndex - 1 ?
selectColor :
getUnselectedBackgroundAt( tabIndex - 1 ) );
g.fillRect( right - 5, 0, 5, 3 );
g.fillRect( right - 2, 3, 2, 2 );
}
//
// Paint Highlight
//
g.setColor( isSelected ? selectHighlight : highlight );
// Paint slant
g.drawLine( right - 6, 1, right - 1, 6 );
// Paint top
g.drawLine( 0, 1, right - 6, 1 );
// Paint left
if ( !isSelected ) {
g.drawLine( 0, 1, 0, bottom );
}
//
// Paint Border
//
if (ocean && isSelected) {
g.setColor(oceanSelectedBorderColor);
}
else {
g.setColor( darkShadow );
}
// Paint bottom
if ( tabIndex == lastIndex ) {
g.drawLine( 0, bottom, right, bottom );
}
// Paint slant
if (ocean && tabPane.getSelectedIndex() == tabIndex - 1) {
g.setColor(oceanSelectedBorderColor);
}
g.drawLine( right - 6, 0, right, 6 );
// Paint top
g.drawLine( 0, 0, right - 6, 0 );
// Paint right
if (ocean && isSelected) {
g.drawLine(right, 6, right, bottom);
if (tabIndex != firstIndex) {
g.setColor(darkShadow);
g.drawLine(right, 0, right, 5);
}
}
else if (ocean && tabPane.getSelectedIndex() == tabIndex - 1) {
g.setColor(oceanSelectedBorderColor);
g.drawLine(right, 0, right, 6);
g.setColor(darkShadow);
g.drawLine(right, 6, right, bottom);
}
else if ( tabIndex != firstIndex ) {
g.drawLine( right, 0, right, bottom );
} else {
g.drawLine( right, 6, right, bottom );
}
g.translate( -x, -y );
}
public void update( Graphics g, JComponent c ) {
if ( c.isOpaque() ) {
g.setColor( tabAreaBackground );
g.fillRect( 0, 0, c.getWidth(),c.getHeight() );
}
paint( g, c );
}
protected void paintTabBackground( Graphics g, int tabPlacement,
int tabIndex, int x, int y, int w, int h, boolean isSelected ) {
int slantWidth = h / 2;
if ( isSelected ) {
g.setColor( selectColor );
} else {
g.setColor( getUnselectedBackgroundAt( tabIndex ) );
}
if (MetalUtils.isLeftToRight(tabPane)) {
switch ( tabPlacement ) {
case LEFT:
g.fillRect( x + 5, y + 1, w - 5, h - 1);
g.fillRect( x + 2, y + 4, 3, h - 4 );
break;
case BOTTOM:
g.fillRect( x + 2, y, w - 2, h - 4 );
g.fillRect( x + 5, y + (h - 1) - 3, w - 5, 3 );
break;
case RIGHT:
g.fillRect( x, y + 2, w - 4, h - 2);
g.fillRect( x + (w - 1) - 3, y + 5, 3, h - 5 );
break;
case TOP:
default:
g.fillRect( x + 4, y + 2, (w - 1) - 3, (h - 1) - 1 );
g.fillRect( x + 2, y + 5, 2, h - 5 );
}
} else {
switch ( tabPlacement ) {
case LEFT:
g.fillRect( x + 5, y + 1, w - 5, h - 1);
g.fillRect( x + 2, y + 4, 3, h - 4 );
break;
case BOTTOM:
g.fillRect( x, y, w - 5, h - 1 );
g.fillRect( x + (w - 1) - 4, y, 4, h - 5);
g.fillRect( x + (w - 1) - 4, y + (h - 1) - 4, 2, 2);
break;
case RIGHT:
g.fillRect( x + 1, y + 1, w - 5, h - 1);
g.fillRect( x + (w - 1) - 3, y + 5, 3, h - 5 );
break;
case TOP:
default:
g.fillRect( x, y + 2, (w - 1) - 3, (h - 1) - 1 );
g.fillRect( x + (w - 1) - 3, y + 5, 3, h - 3 );
}
}
}
/**
* Overridden to do nothing for the Java L&F.
*/
protected int getTabLabelShiftX( int tabPlacement, int tabIndex, boolean isSelected ) {
return 0;
}
/**
* Overridden to do nothing for the Java L&F.
*/
protected int getTabLabelShiftY( int tabPlacement, int tabIndex, boolean isSelected ) {
return 0;
}
/**
* {@inheritDoc}
*
* @since 1.6
*/
protected int getBaselineOffset() {
return 0;
}
public void paint( Graphics g, JComponent c ) {
int tabPlacement = tabPane.getTabPlacement();
Insets insets = c.getInsets(); Dimension size = c.getSize();
// Paint the background for the tab area
if ( tabPane.isOpaque() ) {
Color background = c.getBackground();
if (background instanceof UIResource && tabAreaBackground != null) {
g.setColor(tabAreaBackground);
}
else {
g.setColor(background);
}
switch ( tabPlacement ) {
case LEFT:
g.fillRect( insets.left, insets.top,
calculateTabAreaWidth( tabPlacement, runCount, maxTabWidth ),
size.height - insets.bottom - insets.top );
break;
case BOTTOM:
int totalTabHeight = calculateTabAreaHeight( tabPlacement, runCount, maxTabHeight );
g.fillRect( insets.left, size.height - insets.bottom - totalTabHeight,
size.width - insets.left - insets.right,
totalTabHeight );
break;
case RIGHT:
int totalTabWidth = calculateTabAreaWidth( tabPlacement, runCount, maxTabWidth );
g.fillRect( size.width - insets.right - totalTabWidth,
insets.top, totalTabWidth,
size.height - insets.top - insets.bottom );
break;
case TOP:
default:
g.fillRect( insets.left, insets.top,
size.width - insets.right - insets.left,
calculateTabAreaHeight(tabPlacement, runCount, maxTabHeight) );
paintHighlightBelowTab();
}
}
super.paint( g, c );
}
/**
* Paints highlights below tab.
*/
protected void paintHighlightBelowTab( ) {
}
protected void paintFocusIndicator(Graphics g, int tabPlacement,
Rectangle[] rects, int tabIndex,
Rectangle iconRect, Rectangle textRect,
boolean isSelected) {
if ( tabPane.hasFocus() && isSelected ) {
Rectangle tabRect = rects[tabIndex];
boolean lastInRun = isLastInRun( tabIndex );
g.setColor( focus );
g.translate( tabRect.x, tabRect.y );
int right = tabRect.width - 1;
int bottom = tabRect.height - 1;
boolean leftToRight = MetalUtils.isLeftToRight(tabPane);
switch ( tabPlacement ) {
case RIGHT:
g.drawLine( right - 6,2 , right - 2,6 ); // slant
g.drawLine( 1,2 , right - 6,2 ); // top
g.drawLine( right - 2,6 , right - 2,bottom ); // right
g.drawLine( 1,2 , 1,bottom ); // left
g.drawLine( 1,bottom , right - 2,bottom ); // bottom
break;
case BOTTOM:
if ( leftToRight ) {
g.drawLine( 2, bottom - 6, 6, bottom - 2 ); // slant
g.drawLine( 6, bottom - 2,
right, bottom - 2 ); // bottom
g.drawLine( 2, 0, 2, bottom - 6 ); // left
g.drawLine( 2, 0, right, 0 ); // top
g.drawLine( right, 0, right, bottom - 2 ); // right
} else {
g.drawLine( right - 2, bottom - 6,
right - 6, bottom - 2 ); // slant
g.drawLine( right - 2, 0,
right - 2, bottom - 6 ); // right
if ( lastInRun ) {
// last tab in run
g.drawLine( 2, bottom - 2,
right - 6, bottom - 2 ); // bottom
g.drawLine( 2, 0, right - 2, 0 ); // top
g.drawLine( 2, 0, 2, bottom - 2 ); // left
} else {
g.drawLine( 1, bottom - 2,
right - 6, bottom - 2 ); // bottom
g.drawLine( 1, 0, right - 2, 0 ); // top
g.drawLine( 1, 0, 1, bottom - 2 ); // left
}
}
break;
case LEFT:
g.drawLine( 2, 6, 6, 2 ); // slant
g.drawLine( 2, 6, 2, bottom - 1); // left
g.drawLine( 6, 2, right, 2 ); // top
g.drawLine( right, 2, right, bottom - 1 ); // right
g.drawLine( 2, bottom - 1,
right, bottom - 1 ); // bottom
break;
case TOP:
default:
if ( leftToRight ) {
g.drawLine( 2, 6, 6, 2 ); // slant
g.drawLine( 2, 6, 2, bottom - 1); // left
g.drawLine( 6, 2, right, 2 ); // top
g.drawLine( right, 2, right, bottom - 1 ); // right
g.drawLine( 2, bottom - 1,
right, bottom - 1 ); // bottom
}
else {
g.drawLine( right - 2, 6, right - 6, 2 ); // slant
g.drawLine( right - 2, 6,
right - 2, bottom - 1); // right
if ( lastInRun ) {
// last tab in run
g.drawLine( right - 6, 2, 2, 2 ); // top
g.drawLine( 2, 2, 2, bottom - 1 ); // left
g.drawLine( right - 2, bottom - 1,
2, bottom - 1 ); // bottom
}
else {
g.drawLine( right - 6, 2, 1, 2 ); // top
g.drawLine( 1, 2, 1, bottom - 1 ); // left
g.drawLine( right - 2, bottom - 1,
1, bottom - 1 ); // bottom
}
}
}
g.translate( -tabRect.x, -tabRect.y );
}
}
protected void paintContentBorderTopEdge( Graphics g, int tabPlacement,
int selectedIndex,
int x, int y, int w, int h ) {
boolean leftToRight = MetalUtils.isLeftToRight(tabPane);
int right = x + w - 1;
Rectangle selRect = selectedIndex < 0? null :
getTabBounds(selectedIndex, calcRect);
if (ocean) {
g.setColor(oceanSelectedBorderColor);
}
else {
g.setColor(selectHighlight);
}
// Draw unbroken line if tabs are not on TOP, OR
// selected tab is not in run adjacent to content, OR
// selected tab is not visible (SCROLL_TAB_LAYOUT)
//
if (tabPlacement != TOP || selectedIndex < 0 ||
(selRect.y + selRect.height + 1 < y) ||
(selRect.x < x || selRect.x > x + w)) {
g.drawLine(x, y, x+w-2, y);
if (ocean && tabPlacement == TOP) {
g.setColor(MetalLookAndFeel.getWhite());
g.drawLine(x, y + 1, x+w-2, y + 1);
}
} else {
// Break line to show visual connection to selected tab
boolean lastInRun = isLastInRun(selectedIndex);
if ( leftToRight || lastInRun ) {
g.drawLine(x, y, selRect.x + 1, y);
} else {
g.drawLine(x, y, selRect.x, y);
}
if (selRect.x + selRect.width < right - 1) {
if ( leftToRight && !lastInRun ) {
g.drawLine(selRect.x + selRect.width, y, right - 1, y);
} else {
g.drawLine(selRect.x + selRect.width - 1, y, right - 1, y);
}
} else {
g.setColor(shadow);
g.drawLine(x+w-2, y, x+w-2, y);
}
if (ocean) {
g.setColor(MetalLookAndFeel.getWhite());
if ( leftToRight || lastInRun ) {
g.drawLine(x, y + 1, selRect.x + 1, y + 1);
} else {
g.drawLine(x, y + 1, selRect.x, y + 1);
}
if (selRect.x + selRect.width < right - 1) {
if ( leftToRight && !lastInRun ) {
g.drawLine(selRect.x + selRect.width, y + 1,
right - 1, y + 1);
} else {
g.drawLine(selRect.x + selRect.width - 1, y + 1,
right - 1, y + 1);
}
} else {
g.setColor(shadow);
g.drawLine(x+w-2, y + 1, x+w-2, y + 1);
}
}
}
}
protected void paintContentBorderBottomEdge(Graphics g, int tabPlacement,
int selectedIndex,
int x, int y, int w, int h) {
boolean leftToRight = MetalUtils.isLeftToRight(tabPane);
int bottom = y + h - 1;
int right = x + w - 1;
Rectangle selRect = selectedIndex < 0? null :
getTabBounds(selectedIndex, calcRect);
g.setColor(darkShadow);
// Draw unbroken line if tabs are not on BOTTOM, OR
// selected tab is not in run adjacent to content, OR
// selected tab is not visible (SCROLL_TAB_LAYOUT)
//
if (tabPlacement != BOTTOM || selectedIndex < 0 ||
(selRect.y - 1 > h) ||
(selRect.x < x || selRect.x > x + w)) {
if (ocean && tabPlacement == BOTTOM) {
g.setColor(oceanSelectedBorderColor);
}
g.drawLine(x, y+h-1, x+w-1, y+h-1);
} else {
// Break line to show visual connection to selected tab
boolean lastInRun = isLastInRun(selectedIndex);
if (ocean) {
g.setColor(oceanSelectedBorderColor);
}
if ( leftToRight || lastInRun ) {
g.drawLine(x, bottom, selRect.x, bottom);
} else {
g.drawLine(x, bottom, selRect.x - 1, bottom);
}
if (selRect.x + selRect.width < x + w - 2) {
if ( leftToRight && !lastInRun ) {
g.drawLine(selRect.x + selRect.width, bottom,
right, bottom);
} else {
g.drawLine(selRect.x + selRect.width - 1, bottom,
right, bottom);
}
}
}
}
protected void paintContentBorderLeftEdge(Graphics g, int tabPlacement,
int selectedIndex,
int x, int y, int w, int h) {
Rectangle selRect = selectedIndex < 0? null :
getTabBounds(selectedIndex, calcRect);
if (ocean) {
g.setColor(oceanSelectedBorderColor);
}
else {
g.setColor(selectHighlight);
}
// Draw unbroken line if tabs are not on LEFT, OR
// selected tab is not in run adjacent to content, OR
// selected tab is not visible (SCROLL_TAB_LAYOUT)
//
if (tabPlacement != LEFT || selectedIndex < 0 ||
(selRect.x + selRect.width + 1 < x) ||
(selRect.y < y || selRect.y > y + h)) {
g.drawLine(x, y + 1, x, y+h-2);
if (ocean && tabPlacement == LEFT) {
g.setColor(MetalLookAndFeel.getWhite());
g.drawLine(x + 1, y, x + 1, y + h - 2);
}
} else {
// Break line to show visual connection to selected tab
g.drawLine(x, y, x, selRect.y + 1);
if (selRect.y + selRect.height < y + h - 2) {
g.drawLine(x, selRect.y + selRect.height + 1,
x, y+h+2);
}
if (ocean) {
g.setColor(MetalLookAndFeel.getWhite());
g.drawLine(x + 1, y + 1, x + 1, selRect.y + 1);
if (selRect.y + selRect.height < y + h - 2) {
g.drawLine(x + 1, selRect.y + selRect.height + 1,
x + 1, y+h+2);
}
}
}
}
protected void paintContentBorderRightEdge(Graphics g, int tabPlacement,
int selectedIndex,
int x, int y, int w, int h) {
/**代码未完, 请加载全部代码(NowJava.com).**/
关注时代Java
关注时代Java