/*
* @(#)SynthTabbedPaneUI.java 1.39 05/12/19
*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package javax.swing.plaf.synth;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.plaf.*;
import javax.swing.plaf.basic.*;
import javax.swing.text.View;
import java.awt.*;
import java.awt.event.*;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeEvent;
import java.util.Vector;
import java.util.Hashtable;
import sun.swing.plaf.synth.SynthUI;
import sun.swing.SwingUtilities2;
/**
* A Synth L&F implementation of TabbedPaneUI.
*
* @version 1.39, 12/19/05
* @author Scott Violet
*/
/**
* Looks up 'selectedTabPadInsets' from the Style, which will be additional
* insets for the selected tab.
*/
class SynthTabbedPaneUI extends BasicTabbedPaneUI implements SynthUI, PropertyChangeListener {
private SynthContext tabAreaContext;
private SynthContext tabContext;
private SynthContext tabContentContext;
private SynthStyle style;
private SynthStyle tabStyle;
private SynthStyle tabAreaStyle;
private SynthStyle tabContentStyle;
private Rectangle textRect;
private Rectangle iconRect;
private Rectangle tabAreaBounds = new Rectangle();
public static ComponentUI createUI(JComponent c) {
return new SynthTabbedPaneUI();
}
SynthTabbedPaneUI() {
textRect = new Rectangle();
iconRect = new Rectangle();
}
private boolean scrollableTabLayoutEnabled() {
return (tabPane.getTabLayoutPolicy() == JTabbedPane.SCROLL_TAB_LAYOUT);
}
protected void installDefaults() {
updateStyle(tabPane);
}
private void updateStyle(JTabbedPane c) {
SynthContext context = getContext(c, ENABLED);
SynthStyle oldStyle = style;
style = SynthLookAndFeel.updateStyle(context, this);
// Add properties other than JComponent colors, Borders and
// opacity settings here:
if (style != oldStyle) {
tabRunOverlay =
style.getInt(context, "TabbedPane.tabRunOverlay", 0);
textIconGap = style.getInt(context, "TabbedPane.textIconGap", 0);
selectedTabPadInsets = (Insets)style.get(context,
"TabbedPane.selectedTabPadInsets");
if (selectedTabPadInsets == null) {
selectedTabPadInsets = new Insets(0, 0, 0, 0);
}
if (oldStyle != null) {
uninstallKeyboardActions();
installKeyboardActions();
}
}
context.dispose();
if (tabContext != null) {
tabContext.dispose();
}
tabContext = getContext(c, Region.TABBED_PANE_TAB, ENABLED);
this.tabStyle = SynthLookAndFeel.updateStyle(tabContext, this);
tabInsets = tabStyle.getInsets(tabContext, null);
if (tabAreaContext != null) {
tabAreaContext.dispose();
}
tabAreaContext = getContext(c, Region.TABBED_PANE_TAB_AREA, ENABLED);
this.tabAreaStyle = SynthLookAndFeel.updateStyle(tabAreaContext, this);
tabAreaInsets = tabAreaStyle.getInsets(tabAreaContext, null);
if (tabContentContext != null) {
tabContentContext.dispose();
}
tabContentContext = getContext(c, Region.TABBED_PANE_CONTENT, ENABLED);
this.tabContentStyle = SynthLookAndFeel.updateStyle(tabContentContext,
this);
contentBorderInsets =
tabContentStyle.getInsets(tabContentContext, null);
}
protected void installListeners() {
super.installListeners();
tabPane.addPropertyChangeListener(this);
}
protected void uninstallListeners() {
super.uninstallListeners();
tabPane.removePropertyChangeListener(this);
}
protected void uninstallDefaults() {
SynthContext context = getContext(tabPane, ENABLED);
style.uninstallDefaults(context);
context.dispose();
style = null;
tabStyle.uninstallDefaults(tabContext);
tabContext.dispose();
tabContext = null;
tabStyle = null;
tabAreaStyle.uninstallDefaults(tabAreaContext);
tabAreaContext.dispose();
tabAreaContext = null;
tabAreaStyle = null;
tabContentStyle.uninstallDefaults(tabContentContext);
tabContentContext.dispose();
tabContentContext = null;
tabContentStyle = null;
}
public SynthContext getContext(JComponent c) {
return getContext(c, getComponentState(c));
}
public SynthContext getContext(JComponent c, int state) {
return SynthContext.getContext(SynthContext.class, c,
SynthLookAndFeel.getRegion(c),style, state);
}
public SynthContext getContext(JComponent c, Region subregion) {
return getContext(c, subregion, getComponentState(c));
}
private SynthContext getContext(JComponent c, Region subregion, int state){
SynthStyle style = null;
Class klass = SynthContext.class;
if (subregion == Region.TABBED_PANE_TAB) {
style = tabStyle;
}
else if (subregion == Region.TABBED_PANE_TAB_AREA) {
style = tabAreaStyle;
}
else if (subregion == Region.TABBED_PANE_CONTENT) {
style = tabContentStyle;
}
return SynthContext.getContext(klass, c, subregion, style, state);
}
private Region getRegion(JComponent c) {
return SynthLookAndFeel.getRegion(c);
}
private int getComponentState(JComponent c) {
return SynthLookAndFeel.getComponentState(c);
}
protected JButton createScrollButton(int direction) {
return new SynthScrollableTabButton(direction);
}
public void propertyChange(PropertyChangeEvent e) {
if (SynthLookAndFeel.shouldUpdateStyle(e)) {
updateStyle(tabPane);
}
}
public void update(Graphics g, JComponent c) {
SynthContext context = getContext(c);
SynthLookAndFeel.update(context, g);
context.getPainter().paintTabbedPaneBackground(context,
g, 0, 0, c.getWidth(), c.getHeight());
paint(context, g);
context.dispose();
}
protected int getBaseline(int tab) {
if (tabPane.getTabComponentAt(tab) != null ||
getTextViewForTab(tab) != null) {
return super.getBaseline(tab);
}
String title = tabPane.getTitleAt(tab);
Font font = tabContext.getStyle().getFont(tabContext);
FontMetrics metrics = getFontMetrics(font);
Icon icon = getIconForTab(tab);
textRect.setBounds(0, 0, 0, 0);
iconRect.setBounds(0, 0, 0, 0);
calcRect.setBounds(0, 0, Short.MAX_VALUE, maxTabHeight);
tabContext.getStyle().getGraphicsUtils(tabContext).layoutText(
tabContext, metrics, title, icon, SwingUtilities.CENTER,
SwingUtilities.CENTER, SwingUtilities.LEADING,
SwingUtilities.TRAILING, calcRect,
iconRect, textRect, textIconGap);
return textRect.y + metrics.getAscent() + getBaselineOffset();
}
public void paintBorder(SynthContext context, Graphics g, int x,
int y, int w, int h) {
context.getPainter().paintTabbedPaneBorder(context, g, x, y, w, h);
}
public void paint(Graphics g, JComponent c) {
SynthContext context = getContext(c);
paint(context, g);
context.dispose();
}
protected void paint(SynthContext context, Graphics g) {
int selectedIndex = tabPane.getSelectedIndex();
int tabPlacement = tabPane.getTabPlacement();
ensureCurrentLayout();
// Paint tab area
// If scrollable tabs are enabled, the tab area will be
// painted by the scrollable tab panel instead.
//
if (!scrollableTabLayoutEnabled()) { // WRAP_TAB_LAYOUT
Insets insets = tabPane.getInsets();
int x = insets.left;
int y = insets.top;
int width = tabPane.getWidth() - insets.left - insets.right;
int height = tabPane.getHeight() - insets.top - insets.bottom;
int size;
switch(tabPlacement) {
case LEFT:
width = calculateTabAreaWidth(tabPlacement, runCount,
maxTabWidth);
break;
case RIGHT:
size = calculateTabAreaWidth(tabPlacement, runCount,
maxTabWidth);
x = x + width - size;
width = size;
break;
case BOTTOM:
size = calculateTabAreaHeight(tabPlacement, runCount,
maxTabHeight);
y = y + height - size;
height = size;
break;
case TOP:
default:
height = calculateTabAreaHeight(tabPlacement, runCount,
maxTabHeight);
}
tabAreaBounds.setBounds(x, y, width, height);
if (g.getClipBounds().intersects(tabAreaBounds)) {
paintTabArea(tabAreaContext, g, tabPlacement,
selectedIndex, tabAreaBounds);
}
}
// Paint content border
paintContentBorder(tabContentContext, g, tabPlacement, selectedIndex);
}
protected void paintTabArea(Graphics g, int tabPlacement,
int selectedIndex) {
// This can be invoked from ScrollabeTabPanel
Insets insets = tabPane.getInsets();
int x = insets.left;
int y = insets.top;
int width = tabPane.getWidth() - insets.left - insets.right;
int height = tabPane.getHeight() - insets.top - insets.bottom;
paintTabArea(tabAreaContext, g, tabPlacement, selectedIndex,
new Rectangle(x, y, width, height));
}
protected void paintTabArea(SynthContext ss, Graphics g,
int tabPlacement, int selectedIndex,
Rectangle tabAreaBounds) {
Rectangle clipRect = g.getClipBounds();
// Paint the tab area.
SynthLookAndFeel.updateSubregion(ss, g, tabAreaBounds);
ss.getPainter().paintTabbedPaneTabAreaBackground(ss, g,
tabAreaBounds.x, tabAreaBounds.y, tabAreaBounds.width,
tabAreaBounds.height, tabPlacement);
ss.getPainter().paintTabbedPaneTabAreaBorder(ss, g, tabAreaBounds.x,
tabAreaBounds.y, tabAreaBounds.width, tabAreaBounds.height,
tabPlacement);
int tabCount = tabPane.getTabCount();
iconRect.setBounds(0, 0, 0, 0);
textRect.setBounds(0, 0, 0, 0);
// Paint tabRuns of tabs from back to front
for (int i = runCount - 1; i >= 0; i--) {
int start = tabRuns[i];
int next = tabRuns[(i == runCount - 1)? 0 : i + 1];
int end = (next != 0? next - 1: tabCount - 1);
for (int j = start; j <= end; j++) {
if (rects[j].intersects(clipRect) && selectedIndex != j) {
paintTab(tabContext, g, tabPlacement, rects, j, iconRect,
textRect);
}
}
}
if (selectedIndex >= 0) {
if (rects[selectedIndex].intersects(clipRect)) {
paintTab(tabContext, g, tabPlacement, rects, selectedIndex,
iconRect, textRect);
}
}
}
protected void setRolloverTab(int index) {
int oldRolloverTab = getRolloverTab();
super.setRolloverTab(index);
Rectangle r = null;
if ((oldRolloverTab >= 0) && (oldRolloverTab < tabPane.getTabCount())) {
r = getTabBounds(tabPane, oldRolloverTab);
if (r != null) {
tabPane.repaint(r);
}
}
if (index >= 0) {
r = getTabBounds(tabPane, index);
if (r != null) {
tabPane.repaint(r);
}
}
}
protected void paintTab(SynthContext ss, Graphics g,
int tabPlacement, Rectangle[] rects, int tabIndex,
Rectangle iconRect, Rectangle textRect) {
Rectangle tabRect = rects[tabIndex];
int selectedIndex = tabPane.getSelectedIndex();
boolean isSelected = selectedIndex == tabIndex;
updateTabContext(tabIndex, isSelected,
(getRolloverTab() == tabIndex),
(getFocusIndex() == tabIndex));
SynthLookAndFeel.updateSubregion(ss, g, tabRect);
tabContext.getPainter().paintTabbedPaneTabBackground(tabContext,
g, tabRect.x, tabRect.y, tabRect.width,
tabRect.height, tabIndex,
tabPane.getTabPlacement());
tabContext.getPainter().paintTabbedPaneTabBorder(tabContext, g,
tabRect.x, tabRect.y, tabRect.width, tabRect.height,
tabIndex, tabPane.getTabPlacement());
if (tabPane.getTabComponentAt(tabIndex) == null) {
String title = tabPane.getTitleAt(tabIndex);
Font font = ss.getStyle().getFont(ss);
FontMetrics metrics = SwingUtilities2.getFontMetrics(tabPane, g, font);
Icon icon = getIconForTab(tabIndex);
layoutLabel(ss, tabPlacement, metrics, tabIndex, title, icon,
tabRect, iconRect, textRect, isSelected);
paintText(ss, g, tabPlacement, font, metrics,
tabIndex, title, textRect, isSelected);
paintIcon(g, tabPlacement, tabIndex, icon, iconRect, isSelected);
}
}
protected void layoutLabel(SynthContext ss, int tabPlacement,
FontMetrics metrics, int tabIndex,
String title, Icon icon,
Rectangle tabRect, Rectangle iconRect,
Rectangle textRect, boolean isSelected ) {
View v = getTextViewForTab(tabIndex);
if (v != null) {
tabPane.putClientProperty("html", v);
}
textRect.x = textRect.y = iconRect.x = iconRect.y = 0;
ss.getStyle().getGraphicsUtils(ss).layoutText(ss, metrics, title,
icon, SwingUtilities.CENTER, SwingUtilities.CENTER,
SwingUtilities.LEADING, SwingUtilities.TRAILING,
tabRect, iconRect, textRect, textIconGap);
tabPane.putClientProperty("html", null);
int xNudge = getTabLabelShiftX(tabPlacement, tabIndex, isSelected);
int yNudge = getTabLabelShiftY(tabPlacement, tabIndex, isSelected);
iconRect.x += xNudge;
iconRect.y += yNudge;
textRect.x += xNudge;
textRect.y += yNudge;
}
protected void paintText(SynthContext ss,
Graphics g, int tabPlacement,
Font font, FontMetrics metrics, int tabIndex,
String title, Rectangle textRect,
boolean isSelected) {
g.setFont(font);
View v = getTextViewForTab(tabIndex);
if (v != null) {
// html
v.paint(g, textRect);
} else {
// plain text
int mnemIndex = tabPane.getDisplayedMnemonicIndexAt(tabIndex);
g.setColor(ss.getStyle().getColor(ss, ColorType.TEXT_FOREGROUND));
ss.getStyle().getGraphicsUtils(ss).paintText(ss, g, title,
textRect, mnemIndex);
}
}
protected void paintContentBorder(SynthContext ss, Graphics g,
int tabPlacement, int selectedIndex) {
int width = tabPane.getWidth();
int height = tabPane.getHeight();
Insets insets = tabPane.getInsets();
int x = insets.left;
int y = insets.top;
int w = width - insets.right - insets.left;
int h = height - insets.top - insets.bottom;
switch(tabPlacement) {
case LEFT:
x += calculateTabAreaWidth(tabPlacement, runCount, maxTabWidth);
w -= (x - insets.left);
break;
case RIGHT:
w -= calculateTabAreaWidth(tabPlacement, runCount, maxTabWidth);
break;
case BOTTOM:
h -= calculateTabAreaHeight(tabPlacement, runCount, maxTabHeight);
break;
case TOP:
default:
y += calculateTabAreaHeight(tabPlacement, runCount, maxTabHeight);
h -= (y - insets.top);
}
SynthLookAndFeel.updateSubregion(ss, g, new Rectangle(x, y, w, h));
ss.getPainter().paintTabbedPaneContentBackground(ss, g, x, y,
w, h);
ss.getPainter().paintTabbedPaneContentBorder(ss, g, x, y, w, h);
}
private void ensureCurrentLayout() {
if (!tabPane.isValid()) {
tabPane.validate();
}
/* If tabPane doesn't have a peer yet, the validate() call will
* silently fail. We handle that by forcing a layout if tabPane
* is still invalid. See bug 4237677.
*/
if (!tabPane.isValid()) {
TabbedPaneLayout layout = (TabbedPaneLayout)tabPane.getLayout();
layout.calculateLayoutInfo();
}
}
protected int calculateMaxTabHeight(int tabPlacement) {
FontMetrics metrics = getFontMetrics(tabContext.getStyle().getFont(
tabContext));
int tabCount = tabPane.getTabCount();
int result = 0;
int fontHeight = metrics.getHeight();
for(int i = 0; i < tabCount; i++) {
result = Math.max(calculateTabHeight(tabPlacement, i, fontHeight), result);
}
return result;
}
protected int calculateTabWidth(int tabPlacement, int tabIndex,
FontMetrics metrics) {
Icon icon = getIconForTab(tabIndex);
Insets tabInsets = getTabInsets(tabPlacement, tabIndex);
int width = tabInsets.left + tabInsets.right + 3;
Component tabComponent = tabPane.getTabComponentAt(tabIndex);
if (tabComponent != null) {
width += tabComponent.getPreferredSize().width;
} else {
if (icon != null) {
width += icon.getIconWidth() + textIconGap;
}
View v = getTextViewForTab(tabIndex);
if (v != null) {
// html
width += (int) v.getPreferredSpan(View.X_AXIS);
} else {
// plain text
String title = tabPane.getTitleAt(tabIndex);
width += tabContext.getStyle().getGraphicsUtils(tabContext).
computeStringWidth(tabContext, metrics.getFont(),
metrics, title);
}
}
return width;
}
protected int calculateMaxTabWidth(int tabPlacement) {
FontMetrics metrics = getFontMetrics(tabContext.getStyle().getFont(
tabContext));
int tabCount = tabPane.getTabCount();
int result = 0;
for(int i = 0; i < tabCount; i++) {
result = Math.max(calculateTabWidth(tabPlacement, i, metrics),
result);
}
return result;
}
protected Insets getTabInsets(int tabPlacement, int tabIndex) {
updateTabContext(tabIndex, false, false,
(getFocusIndex() == tabIndex));
return tabInsets;
}
protected FontMetrics getFontMetrics() {
return getFontMetrics(tabContext.getStyle().getFont(tabContext));
}
protected FontMetrics getFontMetrics(Font font) {
return tabPane.getFontMetrics(font);
}
private void updateTabContext(int index, boolean selected,
boolean isMouseOver, boolean hasFocus) {
int state = 0;
if (!tabPane.isEnabled() || !tabPane.isEnabledAt(index)) {
state |= SynthConstants.DISABLED;
if (selected) {
state |= SynthConstants.SELECTED;
}
}
else if (selected) {
state |= (SynthConstants.ENABLED | SynthConstants.SELECTED);
if (isMouseOver && UIManager.getBoolean("TabbedPane.isTabRollover")) {
state |= SynthConstants.MOUSE_OVER;
}
}
else if (isMouseOver) {
state |= (SynthConstants.ENABLED | SynthConstants.MOUSE_OVER);
}
else {
state = SynthLookAndFeel.getComponentState(tabPane);
state &= ~SynthConstants.FOCUSED; // don't use tabbedpane focus state
}
if (hasFocus && tabPane.hasFocus()) {
state |= SynthConstants.FOCUSED; // individual tab has focus
}
tabContext.setComponentState(state);
}
private class SynthScrollableTabButton extends SynthArrowButton implements
UIResource {
public SynthScrollableTabButton(int direction) {
super(direction);
}
}
}
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