| /* |
| * Copyright (c) 1997, 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 |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package javax.swing.plaf.basic; |
| |
| import sun.swing.SwingUtilities2; |
| |
| import javax.swing.*; |
| import javax.swing.event.*; |
| import javax.swing.plaf.*; |
| 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.DefaultLookup; |
| import sun.swing.UIAction; |
| |
| /** |
| * A Basic L&F implementation of TabbedPaneUI. |
| * |
| * @author Amy Fowler |
| * @author Philip Milne |
| * @author Steve Wilson |
| * @author Tom Santos |
| * @author Dave Moore |
| */ |
| public class BasicTabbedPaneUI extends TabbedPaneUI implements SwingConstants { |
| |
| |
| // Instance variables initialized at installation |
| |
| protected JTabbedPane tabPane; |
| |
| protected Color highlight; |
| protected Color lightHighlight; |
| protected Color shadow; |
| protected Color darkShadow; |
| protected Color focus; |
| private Color selectedColor; |
| |
| protected int textIconGap; |
| |
| protected int tabRunOverlay; |
| |
| protected Insets tabInsets; |
| protected Insets selectedTabPadInsets; |
| protected Insets tabAreaInsets; |
| protected Insets contentBorderInsets; |
| private boolean tabsOverlapBorder; |
| private boolean tabsOpaque = true; |
| private boolean contentOpaque = true; |
| |
| /** |
| * As of Java 2 platform v1.3 this previously undocumented field is no |
| * longer used. |
| * Key bindings are now defined by the LookAndFeel, please refer to |
| * the key bindings specification for further details. |
| * |
| * @deprecated As of Java 2 platform v1.3. |
| */ |
| @Deprecated |
| protected KeyStroke upKey; |
| /** |
| * As of Java 2 platform v1.3 this previously undocumented field is no |
| * longer used. |
| * Key bindings are now defined by the LookAndFeel, please refer to |
| * the key bindings specification for further details. |
| * |
| * @deprecated As of Java 2 platform v1.3. |
| */ |
| @Deprecated |
| protected KeyStroke downKey; |
| /** |
| * As of Java 2 platform v1.3 this previously undocumented field is no |
| * longer used. |
| * Key bindings are now defined by the LookAndFeel, please refer to |
| * the key bindings specification for further details. |
| * |
| * @deprecated As of Java 2 platform v1.3. |
| */ |
| @Deprecated |
| protected KeyStroke leftKey; |
| /** |
| * As of Java 2 platform v1.3 this previously undocumented field is no |
| * longer used. |
| * Key bindings are now defined by the LookAndFeel, please refer to |
| * the key bindings specification for further details. |
| * |
| * @deprecated As of Java 2 platform v1.3. |
| */ |
| @Deprecated |
| protected KeyStroke rightKey; |
| |
| |
| // Transient variables (recalculated each time TabbedPane is layed out) |
| |
| protected int tabRuns[] = new int[10]; |
| protected int runCount = 0; |
| protected int selectedRun = -1; |
| protected Rectangle rects[] = new Rectangle[0]; |
| protected int maxTabHeight; |
| protected int maxTabWidth; |
| |
| // Listeners |
| |
| protected ChangeListener tabChangeListener; |
| protected PropertyChangeListener propertyChangeListener; |
| protected MouseListener mouseListener; |
| protected FocusListener focusListener; |
| |
| // Private instance data |
| |
| private Insets currentPadInsets = new Insets(0,0,0,0); |
| private Insets currentTabAreaInsets = new Insets(0,0,0,0); |
| |
| private Component visibleComponent; |
| // PENDING(api): See comment for ContainerHandler |
| private Vector<View> htmlViews; |
| |
| private Hashtable<Integer, Integer> mnemonicToIndexMap; |
| |
| /** |
| * InputMap used for mnemonics. Only non-null if the JTabbedPane has |
| * mnemonics associated with it. Lazily created in initMnemonics. |
| */ |
| private InputMap mnemonicInputMap; |
| |
| // For use when tabLayoutPolicy = SCROLL_TAB_LAYOUT |
| private ScrollableTabSupport tabScroller; |
| |
| private TabContainer tabContainer; |
| |
| /** |
| * A rectangle used for general layout calculations in order |
| * to avoid constructing many new Rectangles on the fly. |
| */ |
| protected transient Rectangle calcRect = new Rectangle(0,0,0,0); |
| |
| /** |
| * Tab that has focus. |
| */ |
| private int focusIndex; |
| |
| /** |
| * Combined listeners. |
| */ |
| private Handler handler; |
| |
| /** |
| * Index of the tab the mouse is over. |
| */ |
| private int rolloverTabIndex; |
| |
| /** |
| * This is set to true when a component is added/removed from the tab |
| * pane and set to false when layout happens. If true it indicates that |
| * tabRuns is not valid and shouldn't be used. |
| */ |
| private boolean isRunsDirty; |
| |
| private boolean calculatedBaseline; |
| private int baseline; |
| |
| // UI creation |
| |
| public static ComponentUI createUI(JComponent c) { |
| return new BasicTabbedPaneUI(); |
| } |
| |
| static void loadActionMap(LazyActionMap map) { |
| map.put(new Actions(Actions.NEXT)); |
| map.put(new Actions(Actions.PREVIOUS)); |
| map.put(new Actions(Actions.RIGHT)); |
| map.put(new Actions(Actions.LEFT)); |
| map.put(new Actions(Actions.UP)); |
| map.put(new Actions(Actions.DOWN)); |
| map.put(new Actions(Actions.PAGE_UP)); |
| map.put(new Actions(Actions.PAGE_DOWN)); |
| map.put(new Actions(Actions.REQUEST_FOCUS)); |
| map.put(new Actions(Actions.REQUEST_FOCUS_FOR_VISIBLE)); |
| map.put(new Actions(Actions.SET_SELECTED)); |
| map.put(new Actions(Actions.SELECT_FOCUSED)); |
| map.put(new Actions(Actions.SCROLL_FORWARD)); |
| map.put(new Actions(Actions.SCROLL_BACKWARD)); |
| } |
| |
| // UI Installation/De-installation |
| |
| public void installUI(JComponent c) { |
| this.tabPane = (JTabbedPane)c; |
| |
| calculatedBaseline = false; |
| rolloverTabIndex = -1; |
| focusIndex = -1; |
| c.setLayout(createLayoutManager()); |
| installComponents(); |
| installDefaults(); |
| installListeners(); |
| installKeyboardActions(); |
| } |
| |
| public void uninstallUI(JComponent c) { |
| uninstallKeyboardActions(); |
| uninstallListeners(); |
| uninstallDefaults(); |
| uninstallComponents(); |
| c.setLayout(null); |
| |
| this.tabPane = null; |
| } |
| |
| /** |
| * Invoked by <code>installUI</code> to create |
| * a layout manager object to manage |
| * the <code>JTabbedPane</code>. |
| * |
| * @return a layout manager object |
| * |
| * @see TabbedPaneLayout |
| * @see javax.swing.JTabbedPane#getTabLayoutPolicy |
| */ |
| protected LayoutManager createLayoutManager() { |
| if (tabPane.getTabLayoutPolicy() == JTabbedPane.SCROLL_TAB_LAYOUT) { |
| return new TabbedPaneScrollLayout(); |
| } else { /* WRAP_TAB_LAYOUT */ |
| return new TabbedPaneLayout(); |
| } |
| } |
| |
| /* In an attempt to preserve backward compatibility for programs |
| * which have extended BasicTabbedPaneUI to do their own layout, the |
| * UI uses the installed layoutManager (and not tabLayoutPolicy) to |
| * determine if scrollTabLayout is enabled. |
| */ |
| private boolean scrollableTabLayoutEnabled() { |
| return (tabPane.getLayout() instanceof TabbedPaneScrollLayout); |
| } |
| |
| /** |
| * Creates and installs any required subcomponents for the JTabbedPane. |
| * Invoked by installUI. |
| * |
| * @since 1.4 |
| */ |
| protected void installComponents() { |
| if (scrollableTabLayoutEnabled()) { |
| if (tabScroller == null) { |
| tabScroller = new ScrollableTabSupport(tabPane.getTabPlacement()); |
| tabPane.add(tabScroller.viewport); |
| } |
| } |
| installTabContainer(); |
| } |
| |
| private void installTabContainer() { |
| for (int i = 0; i < tabPane.getTabCount(); i++) { |
| Component tabComponent = tabPane.getTabComponentAt(i); |
| if (tabComponent != null) { |
| if(tabContainer == null) { |
| tabContainer = new TabContainer(); |
| } |
| tabContainer.add(tabComponent); |
| } |
| } |
| if(tabContainer == null) { |
| return; |
| } |
| if (scrollableTabLayoutEnabled()) { |
| tabScroller.tabPanel.add(tabContainer); |
| } else { |
| tabPane.add(tabContainer); |
| } |
| } |
| |
| /** |
| * Creates and returns a JButton that will provide the user |
| * with a way to scroll the tabs in a particular direction. The |
| * returned JButton must be instance of UIResource. |
| * |
| * @param direction One of the SwingConstants constants: |
| * SOUTH, NORTH, EAST or WEST |
| * @return Widget for user to |
| * @see javax.swing.JTabbedPane#setTabPlacement |
| * @see javax.swing.SwingConstants |
| * @throws IllegalArgumentException if direction is not one of |
| * NORTH, SOUTH, EAST or WEST |
| * @since 1.5 |
| */ |
| protected JButton createScrollButton(int direction) { |
| if (direction != SOUTH && direction != NORTH && direction != EAST && |
| direction != WEST) { |
| throw new IllegalArgumentException("Direction must be one of: " + |
| "SOUTH, NORTH, EAST or WEST"); |
| } |
| return new ScrollableTabButton(direction); |
| } |
| |
| /** |
| * Removes any installed subcomponents from the JTabbedPane. |
| * Invoked by uninstallUI. |
| * |
| * @since 1.4 |
| */ |
| protected void uninstallComponents() { |
| uninstallTabContainer(); |
| if (scrollableTabLayoutEnabled()) { |
| tabPane.remove(tabScroller.viewport); |
| tabPane.remove(tabScroller.scrollForwardButton); |
| tabPane.remove(tabScroller.scrollBackwardButton); |
| tabScroller = null; |
| } |
| } |
| |
| private void uninstallTabContainer() { |
| if(tabContainer == null) { |
| return; |
| } |
| // Remove all the tabComponents, making sure not to notify |
| // the tabbedpane. |
| tabContainer.notifyTabbedPane = false; |
| tabContainer.removeAll(); |
| if(scrollableTabLayoutEnabled()) { |
| tabContainer.remove(tabScroller.croppedEdge); |
| tabScroller.tabPanel.remove(tabContainer); |
| } else { |
| tabPane.remove(tabContainer); |
| } |
| tabContainer = null; |
| } |
| |
| protected void installDefaults() { |
| LookAndFeel.installColorsAndFont(tabPane, "TabbedPane.background", |
| "TabbedPane.foreground", "TabbedPane.font"); |
| highlight = UIManager.getColor("TabbedPane.light"); |
| lightHighlight = UIManager.getColor("TabbedPane.highlight"); |
| shadow = UIManager.getColor("TabbedPane.shadow"); |
| darkShadow = UIManager.getColor("TabbedPane.darkShadow"); |
| focus = UIManager.getColor("TabbedPane.focus"); |
| selectedColor = UIManager.getColor("TabbedPane.selected"); |
| |
| textIconGap = UIManager.getInt("TabbedPane.textIconGap"); |
| tabInsets = UIManager.getInsets("TabbedPane.tabInsets"); |
| selectedTabPadInsets = UIManager.getInsets("TabbedPane.selectedTabPadInsets"); |
| tabAreaInsets = UIManager.getInsets("TabbedPane.tabAreaInsets"); |
| tabsOverlapBorder = UIManager.getBoolean("TabbedPane.tabsOverlapBorder"); |
| contentBorderInsets = UIManager.getInsets("TabbedPane.contentBorderInsets"); |
| tabRunOverlay = UIManager.getInt("TabbedPane.tabRunOverlay"); |
| tabsOpaque = UIManager.getBoolean("TabbedPane.tabsOpaque"); |
| contentOpaque = UIManager.getBoolean("TabbedPane.contentOpaque"); |
| Object opaque = UIManager.get("TabbedPane.opaque"); |
| if (opaque == null) { |
| opaque = Boolean.FALSE; |
| } |
| LookAndFeel.installProperty(tabPane, "opaque", opaque); |
| |
| // Fix for 6711145 BasicTabbedPanuUI should not throw a NPE if these |
| // keys are missing. So we are setting them to there default values here |
| // if the keys are missing. |
| if (tabInsets == null) tabInsets = new Insets(0,4,1,4); |
| if (selectedTabPadInsets == null) selectedTabPadInsets = new Insets(2,2,2,1); |
| if (tabAreaInsets == null) tabAreaInsets = new Insets(3,2,0,2); |
| if (contentBorderInsets == null) contentBorderInsets = new Insets(2,2,3,3); |
| } |
| |
| protected void uninstallDefaults() { |
| highlight = null; |
| lightHighlight = null; |
| shadow = null; |
| darkShadow = null; |
| focus = null; |
| tabInsets = null; |
| selectedTabPadInsets = null; |
| tabAreaInsets = null; |
| contentBorderInsets = null; |
| } |
| |
| protected void installListeners() { |
| if ((propertyChangeListener = createPropertyChangeListener()) != null) { |
| tabPane.addPropertyChangeListener(propertyChangeListener); |
| } |
| if ((tabChangeListener = createChangeListener()) != null) { |
| tabPane.addChangeListener(tabChangeListener); |
| } |
| if ((mouseListener = createMouseListener()) != null) { |
| tabPane.addMouseListener(mouseListener); |
| } |
| tabPane.addMouseMotionListener(getHandler()); |
| if ((focusListener = createFocusListener()) != null) { |
| tabPane.addFocusListener(focusListener); |
| } |
| tabPane.addContainerListener(getHandler()); |
| if (tabPane.getTabCount()>0) { |
| htmlViews = createHTMLVector(); |
| } |
| } |
| |
| protected void uninstallListeners() { |
| if (mouseListener != null) { |
| tabPane.removeMouseListener(mouseListener); |
| mouseListener = null; |
| } |
| tabPane.removeMouseMotionListener(getHandler()); |
| if (focusListener != null) { |
| tabPane.removeFocusListener(focusListener); |
| focusListener = null; |
| } |
| |
| tabPane.removeContainerListener(getHandler()); |
| if (htmlViews!=null) { |
| htmlViews.removeAllElements(); |
| htmlViews = null; |
| } |
| if (tabChangeListener != null) { |
| tabPane.removeChangeListener(tabChangeListener); |
| tabChangeListener = null; |
| } |
| if (propertyChangeListener != null) { |
| tabPane.removePropertyChangeListener(propertyChangeListener); |
| propertyChangeListener = null; |
| } |
| handler = null; |
| } |
| |
| protected MouseListener createMouseListener() { |
| return getHandler(); |
| } |
| |
| protected FocusListener createFocusListener() { |
| return getHandler(); |
| } |
| |
| protected ChangeListener createChangeListener() { |
| return getHandler(); |
| } |
| |
| protected PropertyChangeListener createPropertyChangeListener() { |
| return getHandler(); |
| } |
| |
| private Handler getHandler() { |
| if (handler == null) { |
| handler = new Handler(); |
| } |
| return handler; |
| } |
| |
| protected void installKeyboardActions() { |
| InputMap km = getInputMap(JComponent. |
| WHEN_ANCESTOR_OF_FOCUSED_COMPONENT); |
| |
| SwingUtilities.replaceUIInputMap(tabPane, JComponent. |
| WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, |
| km); |
| km = getInputMap(JComponent.WHEN_FOCUSED); |
| SwingUtilities.replaceUIInputMap(tabPane, JComponent.WHEN_FOCUSED, km); |
| |
| LazyActionMap.installLazyActionMap(tabPane, BasicTabbedPaneUI.class, |
| "TabbedPane.actionMap"); |
| updateMnemonics(); |
| } |
| |
| InputMap getInputMap(int condition) { |
| if (condition == JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT) { |
| return (InputMap)DefaultLookup.get(tabPane, this, |
| "TabbedPane.ancestorInputMap"); |
| } |
| else if (condition == JComponent.WHEN_FOCUSED) { |
| return (InputMap)DefaultLookup.get(tabPane, this, |
| "TabbedPane.focusInputMap"); |
| } |
| return null; |
| } |
| |
| protected void uninstallKeyboardActions() { |
| SwingUtilities.replaceUIActionMap(tabPane, null); |
| SwingUtilities.replaceUIInputMap(tabPane, JComponent. |
| WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, |
| null); |
| SwingUtilities.replaceUIInputMap(tabPane, JComponent.WHEN_FOCUSED, |
| null); |
| SwingUtilities.replaceUIInputMap(tabPane, |
| JComponent.WHEN_IN_FOCUSED_WINDOW, |
| null); |
| mnemonicToIndexMap = null; |
| mnemonicInputMap = null; |
| } |
| |
| /** |
| * Reloads the mnemonics. This should be invoked when a memonic changes, |
| * when the title of a mnemonic changes, or when tabs are added/removed. |
| */ |
| private void updateMnemonics() { |
| resetMnemonics(); |
| for (int counter = tabPane.getTabCount() - 1; counter >= 0; |
| counter--) { |
| int mnemonic = tabPane.getMnemonicAt(counter); |
| |
| if (mnemonic > 0) { |
| addMnemonic(counter, mnemonic); |
| } |
| } |
| } |
| |
| /** |
| * Resets the mnemonics bindings to an empty state. |
| */ |
| private void resetMnemonics() { |
| if (mnemonicToIndexMap != null) { |
| mnemonicToIndexMap.clear(); |
| mnemonicInputMap.clear(); |
| } |
| } |
| |
| /** |
| * Adds the specified mnemonic at the specified index. |
| */ |
| private void addMnemonic(int index, int mnemonic) { |
| if (mnemonicToIndexMap == null) { |
| initMnemonics(); |
| } |
| mnemonicInputMap.put(KeyStroke.getKeyStroke(mnemonic, BasicLookAndFeel.getFocusAcceleratorKeyMask()), |
| "setSelectedIndex"); |
| mnemonicToIndexMap.put(Integer.valueOf(mnemonic), Integer.valueOf(index)); |
| } |
| |
| /** |
| * Installs the state needed for mnemonics. |
| */ |
| private void initMnemonics() { |
| mnemonicToIndexMap = new Hashtable<Integer, Integer>(); |
| mnemonicInputMap = new ComponentInputMapUIResource(tabPane); |
| mnemonicInputMap.setParent(SwingUtilities.getUIInputMap(tabPane, |
| JComponent.WHEN_IN_FOCUSED_WINDOW)); |
| SwingUtilities.replaceUIInputMap(tabPane, |
| JComponent.WHEN_IN_FOCUSED_WINDOW, |
| mnemonicInputMap); |
| } |
| |
| /** |
| * Sets the tab the mouse is over by location. This is a cover method |
| * for <code>setRolloverTab(tabForCoordinate(x, y, false))</code>. |
| */ |
| private void setRolloverTab(int x, int y) { |
| // NOTE: |
| // This calls in with false otherwise it could trigger a validate, |
| // which should NOT happen if the user is only dragging the |
| // mouse around. |
| setRolloverTab(tabForCoordinate(tabPane, x, y, false)); |
| } |
| |
| /** |
| * Sets the tab the mouse is currently over to <code>index</code>. |
| * <code>index</code> will be -1 if the mouse is no longer over any |
| * tab. No checking is done to ensure the passed in index identifies a |
| * valid tab. |
| * |
| * @param index Index of the tab the mouse is over. |
| * @since 1.5 |
| */ |
| protected void setRolloverTab(int index) { |
| rolloverTabIndex = index; |
| } |
| |
| /** |
| * Returns the tab the mouse is currently over, or {@code -1} if the mouse is no |
| * longer over any tab. |
| * |
| * @return the tab the mouse is currently over, or {@code -1} if the mouse is no |
| * longer over any tab |
| * @since 1.5 |
| */ |
| protected int getRolloverTab() { |
| return rolloverTabIndex; |
| } |
| |
| public Dimension getMinimumSize(JComponent c) { |
| // Default to LayoutManager's minimumLayoutSize |
| return null; |
| } |
| |
| public Dimension getMaximumSize(JComponent c) { |
| // Default to LayoutManager's maximumLayoutSize |
| return null; |
| } |
| |
| /** |
| * Returns the baseline. |
| * |
| * @throws NullPointerException {@inheritDoc} |
| * @throws IllegalArgumentException {@inheritDoc} |
| * @see javax.swing.JComponent#getBaseline(int, int) |
| * @since 1.6 |
| */ |
| public int getBaseline(JComponent c, int width, int height) { |
| super.getBaseline(c, width, height); |
| int baseline = calculateBaselineIfNecessary(); |
| if (baseline != -1) { |
| int placement = tabPane.getTabPlacement(); |
| Insets insets = tabPane.getInsets(); |
| Insets tabAreaInsets = getTabAreaInsets(placement); |
| switch(placement) { |
| case JTabbedPane.TOP: |
| baseline += insets.top + tabAreaInsets.top; |
| return baseline; |
| case JTabbedPane.BOTTOM: |
| baseline = height - insets.bottom - |
| tabAreaInsets.bottom - maxTabHeight + baseline; |
| return baseline; |
| case JTabbedPane.LEFT: |
| case JTabbedPane.RIGHT: |
| baseline += insets.top + tabAreaInsets.top; |
| return baseline; |
| } |
| } |
| return -1; |
| } |
| |
| /** |
| * Returns an enum indicating how the baseline of the component |
| * changes as the size changes. |
| * |
| * @throws NullPointerException {@inheritDoc} |
| * @see javax.swing.JComponent#getBaseline(int, int) |
| * @since 1.6 |
| */ |
| public Component.BaselineResizeBehavior getBaselineResizeBehavior( |
| JComponent c) { |
| super.getBaselineResizeBehavior(c); |
| switch(tabPane.getTabPlacement()) { |
| case JTabbedPane.LEFT: |
| case JTabbedPane.RIGHT: |
| case JTabbedPane.TOP: |
| return Component.BaselineResizeBehavior.CONSTANT_ASCENT; |
| case JTabbedPane.BOTTOM: |
| return Component.BaselineResizeBehavior.CONSTANT_DESCENT; |
| } |
| return Component.BaselineResizeBehavior.OTHER; |
| } |
| |
| /** |
| * Returns the baseline for the specified tab. |
| * |
| * @param tab index of tab to get baseline for |
| * @exception IndexOutOfBoundsException if index is out of range |
| * (index < 0 || index >= tab count) |
| * @return baseline or a value < 0 indicating there is no reasonable |
| * baseline |
| * @since 1.6 |
| */ |
| protected int getBaseline(int tab) { |
| if (tabPane.getTabComponentAt(tab) != null) { |
| int offset = getBaselineOffset(); |
| if (offset != 0) { |
| // The offset is not applied to the tab component, and so |
| // in general we can't get good alignment like with components |
| // in the tab. |
| return -1; |
| } |
| Component c = tabPane.getTabComponentAt(tab); |
| Dimension pref = c.getPreferredSize(); |
| Insets tabInsets = getTabInsets(tabPane.getTabPlacement(), tab); |
| int cellHeight = maxTabHeight - tabInsets.top - tabInsets.bottom; |
| return c.getBaseline(pref.width, pref.height) + |
| (cellHeight - pref.height) / 2 + tabInsets.top; |
| } |
| else { |
| View view = getTextViewForTab(tab); |
| if (view != null) { |
| int viewHeight = (int)view.getPreferredSpan(View.Y_AXIS); |
| int baseline = BasicHTML.getHTMLBaseline( |
| view, (int)view.getPreferredSpan(View.X_AXIS), viewHeight); |
| if (baseline >= 0) { |
| return maxTabHeight / 2 - viewHeight / 2 + baseline + |
| getBaselineOffset(); |
| } |
| return -1; |
| } |
| } |
| FontMetrics metrics = getFontMetrics(); |
| int fontHeight = metrics.getHeight(); |
| int fontBaseline = metrics.getAscent(); |
| return maxTabHeight / 2 - fontHeight / 2 + fontBaseline + |
| getBaselineOffset(); |
| } |
| |
| /** |
| * Returns the amount the baseline is offset by. This is typically |
| * the same as <code>getTabLabelShiftY</code>. |
| * |
| * @return amount to offset the baseline by |
| * @since 1.6 |
| */ |
| protected int getBaselineOffset() { |
| switch(tabPane.getTabPlacement()) { |
| case JTabbedPane.TOP: |
| if (tabPane.getTabCount() > 1) { |
| return 1; |
| } |
| else { |
| return -1; |
| } |
| case JTabbedPane.BOTTOM: |
| if (tabPane.getTabCount() > 1) { |
| return -1; |
| } |
| else { |
| return 1; |
| } |
| default: // RIGHT|LEFT |
| return (maxTabHeight % 2); |
| } |
| } |
| |
| private int calculateBaselineIfNecessary() { |
| if (!calculatedBaseline) { |
| calculatedBaseline = true; |
| baseline = -1; |
| if (tabPane.getTabCount() > 0) { |
| calculateBaseline(); |
| } |
| } |
| return baseline; |
| } |
| |
| private void calculateBaseline() { |
| int tabCount = tabPane.getTabCount(); |
| int tabPlacement = tabPane.getTabPlacement(); |
| maxTabHeight = calculateMaxTabHeight(tabPlacement); |
| baseline = getBaseline(0); |
| if (isHorizontalTabPlacement()) { |
| for(int i = 1; i < tabCount; i++) { |
| if (getBaseline(i) != baseline) { |
| baseline = -1; |
| break; |
| } |
| } |
| } |
| else { |
| // left/right, tabs may be different sizes. |
| FontMetrics fontMetrics = getFontMetrics(); |
| int fontHeight = fontMetrics.getHeight(); |
| int height = calculateTabHeight(tabPlacement, 0, fontHeight); |
| for(int i = 1; i < tabCount; i++) { |
| int newHeight = calculateTabHeight(tabPlacement, i,fontHeight); |
| if (height != newHeight) { |
| // assume different baseline |
| baseline = -1; |
| break; |
| } |
| } |
| } |
| } |
| |
| // UI Rendering |
| |
| public void paint(Graphics g, JComponent c) { |
| int selectedIndex = tabPane.getSelectedIndex(); |
| int tabPlacement = tabPane.getTabPlacement(); |
| |
| ensureCurrentLayout(); |
| |
| // Paint content border and tab area |
| if (tabsOverlapBorder) { |
| paintContentBorder(g, tabPlacement, selectedIndex); |
| } |
| // If scrollable tabs are enabled, the tab area will be |
| // painted by the scrollable tab panel instead. |
| // |
| if (!scrollableTabLayoutEnabled()) { // WRAP_TAB_LAYOUT |
| paintTabArea(g, tabPlacement, selectedIndex); |
| } |
| if (!tabsOverlapBorder) { |
| paintContentBorder(g, tabPlacement, selectedIndex); |
| } |
| } |
| |
| /** |
| * Paints the tabs in the tab area. |
| * Invoked by paint(). |
| * The graphics parameter must be a valid <code>Graphics</code> |
| * object. Tab placement may be either: |
| * <code>JTabbedPane.TOP</code>, <code>JTabbedPane.BOTTOM</code>, |
| * <code>JTabbedPane.LEFT</code>, or <code>JTabbedPane.RIGHT</code>. |
| * The selected index must be a valid tabbed pane tab index (0 to |
| * tab count - 1, inclusive) or -1 if no tab is currently selected. |
| * The handling of invalid parameters is unspecified. |
| * |
| * @param g the graphics object to use for rendering |
| * @param tabPlacement the placement for the tabs within the JTabbedPane |
| * @param selectedIndex the tab index of the selected component |
| * |
| * @since 1.4 |
| */ |
| protected void paintTabArea(Graphics g, int tabPlacement, int selectedIndex) { |
| int tabCount = tabPane.getTabCount(); |
| |
| Rectangle iconRect = new Rectangle(), |
| textRect = new Rectangle(); |
| Rectangle clipRect = g.getClipBounds(); |
| |
| // 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 (j != selectedIndex && rects[j].intersects(clipRect)) { |
| paintTab(g, tabPlacement, rects, j, iconRect, textRect); |
| } |
| } |
| } |
| |
| // Paint selected tab if its in the front run |
| // since it may overlap other tabs |
| if (selectedIndex >= 0 && rects[selectedIndex].intersects(clipRect)) { |
| paintTab(g, tabPlacement, rects, selectedIndex, iconRect, textRect); |
| } |
| } |
| |
| protected void paintTab(Graphics g, int tabPlacement, |
| Rectangle[] rects, int tabIndex, |
| Rectangle iconRect, Rectangle textRect) { |
| Rectangle tabRect = rects[tabIndex]; |
| int selectedIndex = tabPane.getSelectedIndex(); |
| boolean isSelected = selectedIndex == tabIndex; |
| |
| if (tabsOpaque || tabPane.isOpaque()) { |
| paintTabBackground(g, tabPlacement, tabIndex, tabRect.x, tabRect.y, |
| tabRect.width, tabRect.height, isSelected); |
| } |
| |
| paintTabBorder(g, tabPlacement, tabIndex, tabRect.x, tabRect.y, |
| tabRect.width, tabRect.height, isSelected); |
| |
| String title = tabPane.getTitleAt(tabIndex); |
| Font font = tabPane.getFont(); |
| FontMetrics metrics = SwingUtilities2.getFontMetrics(tabPane, g, font); |
| Icon icon = getIconForTab(tabIndex); |
| |
| layoutLabel(tabPlacement, metrics, tabIndex, title, icon, |
| tabRect, iconRect, textRect, isSelected); |
| |
| if (tabPane.getTabComponentAt(tabIndex) == null) { |
| String clippedTitle = title; |
| |
| if (scrollableTabLayoutEnabled() && tabScroller.croppedEdge.isParamsSet() && |
| tabScroller.croppedEdge.getTabIndex() == tabIndex && isHorizontalTabPlacement()) { |
| int availTextWidth = tabScroller.croppedEdge.getCropline() - |
| (textRect.x - tabRect.x) - tabScroller.croppedEdge.getCroppedSideWidth(); |
| clippedTitle = SwingUtilities2.clipStringIfNecessary(null, metrics, title, availTextWidth); |
| } else if (!scrollableTabLayoutEnabled() && isHorizontalTabPlacement()) { |
| clippedTitle = SwingUtilities2.clipStringIfNecessary(null, metrics, title, textRect.width); |
| } |
| |
| paintText(g, tabPlacement, font, metrics, |
| tabIndex, clippedTitle, textRect, isSelected); |
| |
| paintIcon(g, tabPlacement, tabIndex, icon, iconRect, isSelected); |
| } |
| paintFocusIndicator(g, tabPlacement, rects, tabIndex, |
| iconRect, textRect, isSelected); |
| } |
| |
| private boolean isHorizontalTabPlacement() { |
| return tabPane.getTabPlacement() == TOP || tabPane.getTabPlacement() == BOTTOM; |
| } |
| |
| /* This method will create and return a polygon shape for the given tab rectangle |
| * which has been cropped at the specified cropline with a torn edge visual. |
| * e.g. A "File" tab which has cropped been cropped just after the "i": |
| * ------------- |
| * | ..... | |
| * | . | |
| * | ... . | |
| * | . . | |
| * | . . | |
| * | . . | |
| * -------------- |
| * |
| * The x, y arrays below define the pattern used to create a "torn" edge |
| * segment which is repeated to fill the edge of the tab. |
| * For tabs placed on TOP and BOTTOM, this righthand torn edge is created by |
| * line segments which are defined by coordinates obtained by |
| * subtracting xCropLen[i] from (tab.x + tab.width) and adding yCroplen[i] |
| * to (tab.y). |
| * For tabs placed on LEFT or RIGHT, the bottom torn edge is created by |
| * subtracting xCropLen[i] from (tab.y + tab.height) and adding yCropLen[i] |
| * to (tab.x). |
| */ |
| private static int xCropLen[] = {1,1,0,0,1,1,2,2}; |
| private static int yCropLen[] = {0,3,3,6,6,9,9,12}; |
| private static final int CROP_SEGMENT = 12; |
| |
| private static Polygon createCroppedTabShape(int tabPlacement, Rectangle tabRect, int cropline) { |
| int rlen; |
| int start; |
| int end; |
| int ostart; |
| |
| switch(tabPlacement) { |
| case LEFT: |
| case RIGHT: |
| rlen = tabRect.width; |
| start = tabRect.x; |
| end = tabRect.x + tabRect.width; |
| ostart = tabRect.y + tabRect.height; |
| break; |
| case TOP: |
| case BOTTOM: |
| default: |
| rlen = tabRect.height; |
| start = tabRect.y; |
| end = tabRect.y + tabRect.height; |
| ostart = tabRect.x + tabRect.width; |
| } |
| int rcnt = rlen/CROP_SEGMENT; |
| if (rlen%CROP_SEGMENT > 0) { |
| rcnt++; |
| } |
| int npts = 2 + (rcnt*8); |
| int xp[] = new int[npts]; |
| int yp[] = new int[npts]; |
| int pcnt = 0; |
| |
| xp[pcnt] = ostart; |
| yp[pcnt++] = end; |
| xp[pcnt] = ostart; |
| yp[pcnt++] = start; |
| for(int i = 0; i < rcnt; i++) { |
| for(int j = 0; j < xCropLen.length; j++) { |
| xp[pcnt] = cropline - xCropLen[j]; |
| yp[pcnt] = start + (i*CROP_SEGMENT) + yCropLen[j]; |
| if (yp[pcnt] >= end) { |
| yp[pcnt] = end; |
| pcnt++; |
| break; |
| } |
| pcnt++; |
| } |
| } |
| if (tabPlacement == JTabbedPane.TOP || tabPlacement == JTabbedPane.BOTTOM) { |
| return new Polygon(xp, yp, pcnt); |
| |
| } else { // LEFT or RIGHT |
| return new Polygon(yp, xp, pcnt); |
| } |
| } |
| |
| /* If tabLayoutPolicy == SCROLL_TAB_LAYOUT, this method will paint an edge |
| * indicating the tab is cropped in the viewport display |
| */ |
| private void paintCroppedTabEdge(Graphics g) { |
| int tabIndex = tabScroller.croppedEdge.getTabIndex(); |
| int cropline = tabScroller.croppedEdge.getCropline(); |
| int x,y; |
| switch(tabPane.getTabPlacement()) { |
| case LEFT: |
| case RIGHT: |
| x = rects[tabIndex].x; |
| y = cropline; |
| int xx = x; |
| g.setColor(shadow); |
| while(xx <= x+rects[tabIndex].width) { |
| for (int i=0; i < xCropLen.length; i+=2) { |
| g.drawLine(xx+yCropLen[i],y-xCropLen[i], |
| xx+yCropLen[i+1]-1,y-xCropLen[i+1]); |
| } |
| xx+=CROP_SEGMENT; |
| } |
| break; |
| case TOP: |
| case BOTTOM: |
| default: |
| x = cropline; |
| y = rects[tabIndex].y; |
| int yy = y; |
| g.setColor(shadow); |
| while(yy <= y+rects[tabIndex].height) { |
| for (int i=0; i < xCropLen.length; i+=2) { |
| g.drawLine(x-xCropLen[i],yy+yCropLen[i], |
| x-xCropLen[i+1],yy+yCropLen[i+1]-1); |
| } |
| yy+=CROP_SEGMENT; |
| } |
| } |
| } |
| |
| protected void layoutLabel(int tabPlacement, |
| FontMetrics metrics, int tabIndex, |
| String title, Icon icon, |
| Rectangle tabRect, Rectangle iconRect, |
| Rectangle textRect, boolean isSelected ) { |
| textRect.x = textRect.y = iconRect.x = iconRect.y = 0; |
| |
| View v = getTextViewForTab(tabIndex); |
| if (v != null) { |
| tabPane.putClientProperty("html", v); |
| } |
| |
| SwingUtilities.layoutCompoundLabel(tabPane, |
| metrics, title, icon, |
| SwingUtilities.CENTER, |
| SwingUtilities.CENTER, |
| SwingUtilities.CENTER, |
| 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 paintIcon(Graphics g, int tabPlacement, |
| int tabIndex, Icon icon, Rectangle iconRect, |
| boolean isSelected ) { |
| if (icon != null) { |
| icon.paintIcon(tabPane, g, iconRect.x, iconRect.y); |
| } |
| } |
| |
| protected void paintText(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); |
| |
| if (tabPane.isEnabled() && tabPane.isEnabledAt(tabIndex)) { |
| Color fg = tabPane.getForegroundAt(tabIndex); |
| if (isSelected && (fg instanceof UIResource)) { |
| Color selectedFG = UIManager.getColor( |
| "TabbedPane.selectedForeground"); |
| if (selectedFG != null) { |
| fg = selectedFG; |
| } |
| } |
| g.setColor(fg); |
| SwingUtilities2.drawStringUnderlineCharAt(tabPane, g, |
| title, mnemIndex, |
| textRect.x, textRect.y + metrics.getAscent()); |
| |
| } else { // tab disabled |
| g.setColor(tabPane.getBackgroundAt(tabIndex).brighter()); |
| SwingUtilities2.drawStringUnderlineCharAt(tabPane, g, |
| title, mnemIndex, |
| textRect.x, textRect.y + metrics.getAscent()); |
| g.setColor(tabPane.getBackgroundAt(tabIndex).darker()); |
| SwingUtilities2.drawStringUnderlineCharAt(tabPane, g, |
| title, mnemIndex, |
| textRect.x - 1, textRect.y + metrics.getAscent() - 1); |
| |
| } |
| } |
| } |
| |
| |
| protected int getTabLabelShiftX(int tabPlacement, int tabIndex, boolean isSelected) { |
| Rectangle tabRect = rects[tabIndex]; |
| String propKey = (isSelected ? "selectedLabelShift" : "labelShift"); |
| int nudge = DefaultLookup.getInt( |
| tabPane, this, "TabbedPane." + propKey, 1); |
| |
| switch (tabPlacement) { |
| case LEFT: |
| return nudge; |
| case RIGHT: |
| return -nudge; |
| case BOTTOM: |
| case TOP: |
| default: |
| return tabRect.width % 2; |
| } |
| } |
| |
| protected int getTabLabelShiftY(int tabPlacement, int tabIndex, boolean isSelected) { |
| Rectangle tabRect = rects[tabIndex]; |
| int nudge = (isSelected ? DefaultLookup.getInt(tabPane, this, "TabbedPane.selectedLabelShift", -1) : |
| DefaultLookup.getInt(tabPane, this, "TabbedPane.labelShift", 1)); |
| |
| switch (tabPlacement) { |
| case BOTTOM: |
| return -nudge; |
| case LEFT: |
| case RIGHT: |
| return tabRect.height % 2; |
| case TOP: |
| default: |
| return nudge; |
| } |
| } |
| |
| protected void paintFocusIndicator(Graphics g, int tabPlacement, |
| Rectangle[] rects, int tabIndex, |
| Rectangle iconRect, Rectangle textRect, |
| boolean isSelected) { |
| Rectangle tabRect = rects[tabIndex]; |
| if (tabPane.hasFocus() && isSelected) { |
| int x, y, w, h; |
| g.setColor(focus); |
| switch(tabPlacement) { |
| case LEFT: |
| x = tabRect.x + 3; |
| y = tabRect.y + 3; |
| w = tabRect.width - 5; |
| h = tabRect.height - 6; |
| break; |
| case RIGHT: |
| x = tabRect.x + 2; |
| y = tabRect.y + 3; |
| w = tabRect.width - 5; |
| h = tabRect.height - 6; |
| break; |
| case BOTTOM: |
| x = tabRect.x + 3; |
| y = tabRect.y + 2; |
| w = tabRect.width - 6; |
| h = tabRect.height - 5; |
| break; |
| case TOP: |
| default: |
| x = tabRect.x + 3; |
| y = tabRect.y + 3; |
| w = tabRect.width - 6; |
| h = tabRect.height - 5; |
| } |
| BasicGraphicsUtils.drawDashedRect(g, x, y, w, h); |
| } |
| } |
| |
| /** |
| * this function draws the border around each tab |
| * note that this function does now draw the background of the tab. |
| * that is done elsewhere |
| */ |
| protected void paintTabBorder(Graphics g, int tabPlacement, |
| int tabIndex, |
| int x, int y, int w, int h, |
| boolean isSelected ) { |
| g.setColor(lightHighlight); |
| |
| switch (tabPlacement) { |
| case LEFT: |
| g.drawLine(x+1, y+h-2, x+1, y+h-2); // bottom-left highlight |
| g.drawLine(x, y+2, x, y+h-3); // left highlight |
| g.drawLine(x+1, y+1, x+1, y+1); // top-left highlight |
| g.drawLine(x+2, y, x+w-1, y); // top highlight |
| |
| g.setColor(shadow); |
| g.drawLine(x+2, y+h-2, x+w-1, y+h-2); // bottom shadow |
| |
| g.setColor(darkShadow); |
| g.drawLine(x+2, y+h-1, x+w-1, y+h-1); // bottom dark shadow |
| break; |
| case RIGHT: |
| g.drawLine(x, y, x+w-3, y); // top highlight |
| |
| g.setColor(shadow); |
| g.drawLine(x, y+h-2, x+w-3, y+h-2); // bottom shadow |
| g.drawLine(x+w-2, y+2, x+w-2, y+h-3); // right shadow |
| |
| g.setColor(darkShadow); |
| g.drawLine(x+w-2, y+1, x+w-2, y+1); // top-right dark shadow |
| g.drawLine(x+w-2, y+h-2, x+w-2, y+h-2); // bottom-right dark shadow |
| g.drawLine(x+w-1, y+2, x+w-1, y+h-3); // right dark shadow |
| g.drawLine(x, y+h-1, x+w-3, y+h-1); // bottom dark shadow |
| break; |
| case BOTTOM: |
| g.drawLine(x, y, x, y+h-3); // left highlight |
| g.drawLine(x+1, y+h-2, x+1, y+h-2); // bottom-left highlight |
| |
| g.setColor(shadow); |
| g.drawLine(x+2, y+h-2, x+w-3, y+h-2); // bottom shadow |
| g.drawLine(x+w-2, y, x+w-2, y+h-3); // right shadow |
| |
| g.setColor(darkShadow); |
| g.drawLine(x+2, y+h-1, x+w-3, y+h-1); // bottom dark shadow |
| g.drawLine(x+w-2, y+h-2, x+w-2, y+h-2); // bottom-right dark shadow |
| g.drawLine(x+w-1, y, x+w-1, y+h-3); // right dark shadow |
| break; |
| case TOP: |
| default: |
| g.drawLine(x, y+2, x, y+h-1); // left highlight |
| g.drawLine(x+1, y+1, x+1, y+1); // top-left highlight |
| g.drawLine(x+2, y, x+w-3, y); // top highlight |
| |
| g.setColor(shadow); |
| g.drawLine(x+w-2, y+2, x+w-2, y+h-1); // right shadow |
| |
| g.setColor(darkShadow); |
| g.drawLine(x+w-1, y+2, x+w-1, y+h-1); // right dark-shadow |
| g.drawLine(x+w-2, y+1, x+w-2, y+1); // top-right shadow |
| } |
| } |
| |
| protected void paintTabBackground(Graphics g, int tabPlacement, |
| int tabIndex, |
| int x, int y, int w, int h, |
| boolean isSelected ) { |
| g.setColor(!isSelected || selectedColor == null? |
| tabPane.getBackgroundAt(tabIndex) : selectedColor); |
| switch(tabPlacement) { |
| case LEFT: |
| g.fillRect(x+1, y+1, w-1, h-3); |
| break; |
| case RIGHT: |
| g.fillRect(x, y+1, w-2, h-3); |
| break; |
| case BOTTOM: |
| g.fillRect(x+1, y, w-3, h-1); |
| break; |
| case TOP: |
| default: |
| g.fillRect(x+1, y+1, w-3, h-1); |
| } |
| } |
| |
| protected void paintContentBorder(Graphics g, int tabPlacement, int selectedIndex) { |
| int width = tabPane.getWidth(); |
| int height = tabPane.getHeight(); |
| Insets insets = tabPane.getInsets(); |
| Insets tabAreaInsets = getTabAreaInsets(tabPlacement); |
| |
| 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); |
| if (tabsOverlapBorder) { |
| x -= tabAreaInsets.right; |
| } |
| w -= (x - insets.left); |
| break; |
| case RIGHT: |
| w -= calculateTabAreaWidth(tabPlacement, runCount, maxTabWidth); |
| if (tabsOverlapBorder) { |
| w += tabAreaInsets.left; |
| } |
| break; |
| case BOTTOM: |
| h -= calculateTabAreaHeight(tabPlacement, runCount, maxTabHeight); |
| if (tabsOverlapBorder) { |
| h += tabAreaInsets.top; |
| } |
| break; |
| case TOP: |
| default: |
| y += calculateTabAreaHeight(tabPlacement, runCount, maxTabHeight); |
| if (tabsOverlapBorder) { |
| y -= tabAreaInsets.bottom; |
| } |
| h -= (y - insets.top); |
| } |
| |
| if ( tabPane.getTabCount() > 0 && (contentOpaque || tabPane.isOpaque()) ) { |
| // Fill region behind content area |
| Color color = UIManager.getColor("TabbedPane.contentAreaColor"); |
| if (color != null) { |
| g.setColor(color); |
| } |
| else if ( selectedColor == null || selectedIndex == -1 ) { |
| g.setColor(tabPane.getBackground()); |
| } |
| else { |
| g.setColor(selectedColor); |
| } |
| g.fillRect(x,y,w,h); |
| } |
| |
| paintContentBorderTopEdge(g, tabPlacement, selectedIndex, x, y, w, h); |
| paintContentBorderLeftEdge(g, tabPlacement, selectedIndex, x, y, w, h); |
| paintContentBorderBottomEdge(g, tabPlacement, selectedIndex, x, y, w, h); |
| paintContentBorderRightEdge(g, tabPlacement, selectedIndex, x, y, w, h); |
| |
| } |
| |
| protected void paintContentBorderTopEdge(Graphics g, int tabPlacement, |
| int selectedIndex, |
| int x, int y, int w, int h) { |
| Rectangle selRect = selectedIndex < 0? null : |
| getTabBounds(selectedIndex, calcRect); |
| |
| g.setColor(lightHighlight); |
| |
| // 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); |
| } else { |
| // Break line to show visual connection to selected tab |
| g.drawLine(x, y, selRect.x - 1, y); |
| if (selRect.x + selRect.width < x + w - 2) { |
| g.drawLine(selRect.x + selRect.width, y, |
| x+w-2, y); |
| } else { |
| g.setColor(shadow); |
| g.drawLine(x+w-2, y, x+w-2, y); |
| } |
| } |
| } |
| |
| 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); |
| |
| g.setColor(lightHighlight); |
| |
| // 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, x, 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, |
| x, y+h-2); |
| } |
| } |
| } |
| |
| protected void paintContentBorderBottomEdge(Graphics g, int tabPlacement, |
| int selectedIndex, |
| int x, int y, int w, int h) { |
| Rectangle selRect = selectedIndex < 0? null : |
| getTabBounds(selectedIndex, calcRect); |
| |
| g.setColor(shadow); |
| |
| // 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)) { |
| g.drawLine(x+1, y+h-2, x+w-2, y+h-2); |
| g.setColor(darkShadow); |
| g.drawLine(x, y+h-1, x+w-1, y+h-1); |
| } else { |
| // Break line to show visual connection to selected tab |
| g.drawLine(x+1, y+h-2, selRect.x - 1, y+h-2); |
| g.setColor(darkShadow); |
| g.drawLine(x, y+h-1, selRect.x - 1, y+h-1); |
| if (selRect.x + selRect.width < x + w - 2) { |
| g.setColor(shadow); |
| g.drawLine(selRect.x + selRect.width, y+h-2, x+w-2, y+h-2); |
| g.setColor(darkShadow); |
| g.drawLine(selRect.x + selRect.width, y+h-1, x+w-1, y+h-1); |
| } |
| } |
| |
| } |
| |
| protected void paintContentBorderRightEdge(Graphics g, int tabPlacement, |
| int selectedIndex, |
| int x, int y, int w, int h) { |
| Rectangle selRect = selectedIndex < 0? null : |
| getTabBounds(selectedIndex, calcRect); |
| |
| g.setColor(shadow); |
| |
| // Draw unbroken line if tabs are not on RIGHT, OR |
| // selected tab is not in run adjacent to content, OR |
| // selected tab is not visible (SCROLL_TAB_LAYOUT) |
| // |
| if (tabPlacement != RIGHT || selectedIndex < 0 || |
| (selRect.x - 1 > w) || |
| (selRect.y < y || selRect.y > y + h)) { |
| g.drawLine(x+w-2, y+1, x+w-2, y+h-3); |
| g.setColor(darkShadow); |
| g.drawLine(x+w-1, y, x+w-1, y+h-1); |
| } else { |
| // Break line to show visual connection to selected tab |
| g.drawLine(x+w-2, y+1, x+w-2, selRect.y - 1); |
| g.setColor(darkShadow); |
| g.drawLine(x+w-1, y, x+w-1, selRect.y - 1); |
| |
| if (selRect.y + selRect.height < y + h - 2) { |
| g.setColor(shadow); |
| g.drawLine(x+w-2, selRect.y + selRect.height, |
| x+w-2, y+h-2); |
| g.setColor(darkShadow); |
| g.drawLine(x+w-1, selRect.y + selRect.height, |
| x+w-1, y+h-2); |
| } |
| } |
| } |
| |
| 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(); |
| } |
| } |
| |
| |
| // TabbedPaneUI methods |
| |
| /** |
| * Returns the bounds of the specified tab index. The bounds are |
| * with respect to the JTabbedPane's coordinate space. |
| */ |
| public Rectangle getTabBounds(JTabbedPane pane, int i) { |
| ensureCurrentLayout(); |
| Rectangle tabRect = new Rectangle(); |
| return getTabBounds(i, tabRect); |
| } |
| |
| public int getTabRunCount(JTabbedPane pane) { |
| ensureCurrentLayout(); |
| return runCount; |
| } |
| |
| /** |
| * Returns the tab index which intersects the specified point |
| * in the JTabbedPane's coordinate space. |
| */ |
| public int tabForCoordinate(JTabbedPane pane, int x, int y) { |
| return tabForCoordinate(pane, x, y, true); |
| } |
| |
| private int tabForCoordinate(JTabbedPane pane, int x, int y, |
| boolean validateIfNecessary) { |
| if (validateIfNecessary) { |
| ensureCurrentLayout(); |
| } |
| if (isRunsDirty) { |
| // We didn't recalculate the layout, runs and tabCount may not |
| // line up, bail. |
| return -1; |
| } |
| Point p = new Point(x, y); |
| |
| if (scrollableTabLayoutEnabled()) { |
| translatePointToTabPanel(x, y, p); |
| Rectangle viewRect = tabScroller.viewport.getViewRect(); |
| if (!viewRect.contains(p)) { |
| return -1; |
| } |
| } |
| int tabCount = tabPane.getTabCount(); |
| for (int i = 0; i < tabCount; i++) { |
| if (rects[i].contains(p.x, p.y)) { |
| return i; |
| } |
| } |
| return -1; |
| } |
| |
| /** |
| * Returns the bounds of the specified tab in the coordinate space |
| * of the JTabbedPane component. This is required because the tab rects |
| * are by default defined in the coordinate space of the component where |
| * they are rendered, which could be the JTabbedPane |
| * (for WRAP_TAB_LAYOUT) or a ScrollableTabPanel (SCROLL_TAB_LAYOUT). |
| * This method should be used whenever the tab rectangle must be relative |
| * to the JTabbedPane itself and the result should be placed in a |
| * designated Rectangle object (rather than instantiating and returning |
| * a new Rectangle each time). The tab index parameter must be a valid |
| * tabbed pane tab index (0 to tab count - 1, inclusive). The destination |
| * rectangle parameter must be a valid <code>Rectangle</code> instance. |
| * The handling of invalid parameters is unspecified. |
| * |
| * @param tabIndex the index of the tab |
| * @param dest the rectangle where the result should be placed |
| * @return the resulting rectangle |
| * |
| * @since 1.4 |
| */ |
| protected Rectangle getTabBounds(int tabIndex, Rectangle dest) { |
| dest.width = rects[tabIndex].width; |
| dest.height = rects[tabIndex].height; |
| |
| if (scrollableTabLayoutEnabled()) { // SCROLL_TAB_LAYOUT |
| // Need to translate coordinates based on viewport location & |
| // view position |
| Point vpp = tabScroller.viewport.getLocation(); |
| Point viewp = tabScroller.viewport.getViewPosition(); |
| dest.x = rects[tabIndex].x + vpp.x - viewp.x; |
| dest.y = rects[tabIndex].y + vpp.y - viewp.y; |
| |
| } else { // WRAP_TAB_LAYOUT |
| dest.x = rects[tabIndex].x; |
| dest.y = rects[tabIndex].y; |
| } |
| return dest; |
| } |
| |
| /** |
| * Returns the index of the tab closest to the passed in location, note |
| * that the returned tab may not contain the location x,y. |
| */ |
| private int getClosestTab(int x, int y) { |
| int min = 0; |
| int tabCount = Math.min(rects.length, tabPane.getTabCount()); |
| int max = tabCount; |
| int tabPlacement = tabPane.getTabPlacement(); |
| boolean useX = (tabPlacement == TOP || tabPlacement == BOTTOM); |
| int want = (useX) ? x : y; |
| |
| while (min != max) { |
| int current = (max + min) / 2; |
| int minLoc; |
| int maxLoc; |
| |
| if (useX) { |
| minLoc = rects[current].x; |
| maxLoc = minLoc + rects[current].width; |
| } |
| else { |
| minLoc = rects[current].y; |
| maxLoc = minLoc + rects[current].height; |
| } |
| if (want < minLoc) { |
| max = current; |
| if (min == max) { |
| return Math.max(0, current - 1); |
| } |
| } |
| else if (want >= maxLoc) { |
| min = current; |
| if (max - min <= 1) { |
| return Math.max(current + 1, tabCount - 1); |
| } |
| } |
| else { |
| return current; |
| } |
| } |
| return min; |
| } |
| |
| /** |
| * Returns a point which is translated from the specified point in the |
| * JTabbedPane's coordinate space to the coordinate space of the |
| * ScrollableTabPanel. This is used for SCROLL_TAB_LAYOUT ONLY. |
| */ |
| private Point translatePointToTabPanel(int srcx, int srcy, Point dest) { |
| Point vpp = tabScroller.viewport.getLocation(); |
| Point viewp = tabScroller.viewport.getViewPosition(); |
| dest.x = srcx - vpp.x + viewp.x; |
| dest.y = srcy - vpp.y + viewp.y; |
| return dest; |
| } |
| |
| // BasicTabbedPaneUI methods |
| |
| protected Component getVisibleComponent() { |
| return visibleComponent; |
| } |
| |
| protected void setVisibleComponent(Component component) { |
| if (visibleComponent != null |
| && visibleComponent != component |
| && visibleComponent.getParent() == tabPane |
| && visibleComponent.isVisible()) { |
| |
| visibleComponent.setVisible(false); |
| } |
| if (component != null && !component.isVisible()) { |
| component.setVisible(true); |
| } |
| visibleComponent = component; |
| } |
| |
| protected void assureRectsCreated(int tabCount) { |
| int rectArrayLen = rects.length; |
| if (tabCount != rectArrayLen ) { |
| Rectangle[] tempRectArray = new Rectangle[tabCount]; |
| System.arraycopy(rects, 0, tempRectArray, 0, |
| Math.min(rectArrayLen, tabCount)); |
| rects = tempRectArray; |
| for (int rectIndex = rectArrayLen; rectIndex < tabCount; rectIndex++) { |
| rects[rectIndex] = new Rectangle(); |
| } |
| } |
| |
| } |
| |
| protected void expandTabRunsArray() { |
| int rectLen = tabRuns.length; |
| int[] newArray = new int[rectLen+10]; |
| System.arraycopy(tabRuns, 0, newArray, 0, runCount); |
| tabRuns = newArray; |
| } |
| |
| protected int getRunForTab(int tabCount, int tabIndex) { |
| for (int i = 0; i < runCount; i++) { |
| int first = tabRuns[i]; |
| int last = lastTabInRun(tabCount, i); |
| if (tabIndex >= first && tabIndex <= last) { |
| return i; |
| } |
| } |
| return 0; |
| } |
| |
| protected int lastTabInRun(int tabCount, int run) { |
| if (runCount == 1) { |
| return tabCount - 1; |
| } |
| int nextRun = (run == runCount - 1? 0 : run + 1); |
| if (tabRuns[nextRun] == 0) { |
| return tabCount - 1; |
| } |
| return tabRuns[nextRun]-1; |
| } |
| |
| protected int getTabRunOverlay(int tabPlacement) { |
| return tabRunOverlay; |
| } |
| |
| protected int getTabRunIndent(int tabPlacement, int run) { |
| return 0; |
| } |
| |
| protected boolean shouldPadTabRun(int tabPlacement, int run) { |
| return runCount > 1; |
| } |
| |
| protected boolean shouldRotateTabRuns(int tabPlacement) { |
| return true; |
| } |
| |
| protected Icon getIconForTab(int tabIndex) { |
| return (!tabPane.isEnabled() || !tabPane.isEnabledAt(tabIndex))? |
| tabPane.getDisabledIconAt(tabIndex) : tabPane.getIconAt(tabIndex); |
| } |
| |
| /** |
| * Returns the text View object required to render stylized text (HTML) for |
| * the specified tab or null if no specialized text rendering is needed |
| * for this tab. This is provided to support html rendering inside tabs. |
| * |
| * @param tabIndex the index of the tab |
| * @return the text view to render the tab's text or null if no |
| * specialized rendering is required |
| * |
| * @since 1.4 |
| */ |
| protected View getTextViewForTab(int tabIndex) { |
| if (htmlViews != null) { |
| return htmlViews.elementAt(tabIndex); |
| } |
| return null; |
| } |
| |
| protected int calculateTabHeight(int tabPlacement, int tabIndex, int fontHeight) { |
| int height = 0; |
| Component c = tabPane.getTabComponentAt(tabIndex); |
| if (c != null) { |
| height = c.getPreferredSize().height; |
| } else { |
| View v = getTextViewForTab(tabIndex); |
| if (v != null) { |
| // html |
| height += (int) v.getPreferredSpan(View.Y_AXIS); |
| } else { |
| // plain text |
| height += fontHeight; |
| } |
| Icon icon = getIconForTab(tabIndex); |
| |
| if (icon != null) { |
| height = Math.max(height, icon.getIconHeight()); |
| } |
| } |
| Insets tabInsets = getTabInsets(tabPlacement, tabIndex); |
| height += tabInsets.top + tabInsets.bottom + 2; |
| return height; |
| } |
| |
| protected int calculateMaxTabHeight(int tabPlacement) { |
| FontMetrics metrics = getFontMetrics(); |
| 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) { |
| 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 { |
| Icon icon = getIconForTab(tabIndex); |
| 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 += SwingUtilities2.stringWidth(tabPane, metrics, title); |
| } |
| } |
| return width; |
| } |
| |
| protected int calculateMaxTabWidth(int tabPlacement) { |
| FontMetrics metrics = getFontMetrics(); |
| 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 int calculateTabAreaHeight(int tabPlacement, int horizRunCount, int maxTabHeight) { |
| Insets tabAreaInsets = getTabAreaInsets(tabPlacement); |
| int tabRunOverlay = getTabRunOverlay(tabPlacement); |
| return (horizRunCount > 0? |
| horizRunCount * (maxTabHeight-tabRunOverlay) + tabRunOverlay + |
| tabAreaInsets.top + tabAreaInsets.bottom : |
| 0); |
| } |
| |
| protected int calculateTabAreaWidth(int tabPlacement, int vertRunCount, int maxTabWidth) { |
| Insets tabAreaInsets = getTabAreaInsets(tabPlacement); |
| int tabRunOverlay = getTabRunOverlay(tabPlacement); |
| return (vertRunCount > 0? |
| vertRunCount * (maxTabWidth-tabRunOverlay) + tabRunOverlay + |
| tabAreaInsets.left + tabAreaInsets.right : |
| 0); |
| } |
| |
| protected Insets getTabInsets(int tabPlacement, int tabIndex) { |
| return tabInsets; |
| } |
| |
| protected Insets getSelectedTabPadInsets(int tabPlacement) { |
| rotateInsets(selectedTabPadInsets, currentPadInsets, tabPlacement); |
| return currentPadInsets; |
| } |
| |
| protected Insets getTabAreaInsets(int tabPlacement) { |
| rotateInsets(tabAreaInsets, currentTabAreaInsets, tabPlacement); |
| return currentTabAreaInsets; |
| } |
| |
| protected Insets getContentBorderInsets(int tabPlacement) { |
| return contentBorderInsets; |
| } |
| |
| protected FontMetrics getFontMetrics() { |
| Font font = tabPane.getFont(); |
| return tabPane.getFontMetrics(font); |
| } |
| |
| |
| // Tab Navigation methods |
| |
| protected void navigateSelectedTab(int direction) { |
| int tabPlacement = tabPane.getTabPlacement(); |
| int current = DefaultLookup.getBoolean(tabPane, this, |
| "TabbedPane.selectionFollowsFocus", true) ? |
| tabPane.getSelectedIndex() : getFocusIndex(); |
| int tabCount = tabPane.getTabCount(); |
| boolean leftToRight = BasicGraphicsUtils.isLeftToRight(tabPane); |
| |
| // If we have no tabs then don't navigate. |
| if (tabCount <= 0) { |
| return; |
| } |
| |
| int offset; |
| switch(tabPlacement) { |
| case LEFT: |
| case RIGHT: |
| switch(direction) { |
| case NEXT: |
| selectNextTab(current); |
| break; |
| case PREVIOUS: |
| selectPreviousTab(current); |
| break; |
| case NORTH: |
| selectPreviousTabInRun(current); |
| break; |
| case SOUTH: |
| selectNextTabInRun(current); |
| break; |
| case WEST: |
| offset = getTabRunOffset(tabPlacement, tabCount, current, false); |
| selectAdjacentRunTab(tabPlacement, current, offset); |
| break; |
| case EAST: |
| offset = getTabRunOffset(tabPlacement, tabCount, current, true); |
| selectAdjacentRunTab(tabPlacement, current, offset); |
| break; |
| default: |
| } |
| break; |
| case BOTTOM: |
| case TOP: |
| default: |
| switch(direction) { |
| case NEXT: |
| selectNextTab(current); |
| break; |
| case PREVIOUS: |
| selectPreviousTab(current); |
| break; |
| case NORTH: |
| offset = getTabRunOffset(tabPlacement, tabCount, current, false); |
| selectAdjacentRunTab(tabPlacement, current, offset); |
| break; |
| case SOUTH: |
| offset = getTabRunOffset(tabPlacement, tabCount, current, true); |
| selectAdjacentRunTab(tabPlacement, current, offset); |
| break; |
| case EAST: |
| if (leftToRight) { |
| selectNextTabInRun(current); |
| } else { |
| selectPreviousTabInRun(current); |
| } |
| break; |
| case WEST: |
| if (leftToRight) { |
| selectPreviousTabInRun(current); |
| } else { |
| selectNextTabInRun(current); |
| } |
| break; |
| default: |
| } |
| } |
| } |
| |
| protected void selectNextTabInRun(int current) { |
| int tabCount = tabPane.getTabCount(); |
| int tabIndex = getNextTabIndexInRun(tabCount, current); |
| |
| while(tabIndex != current && !tabPane.isEnabledAt(tabIndex)) { |
| tabIndex = getNextTabIndexInRun(tabCount, tabIndex); |
| } |
| navigateTo(tabIndex); |
| } |
| |
| protected void selectPreviousTabInRun(int current) { |
| int tabCount = tabPane.getTabCount(); |
| int tabIndex = getPreviousTabIndexInRun(tabCount, current); |
| |
| while(tabIndex != current && !tabPane.isEnabledAt(tabIndex)) { |
| tabIndex = getPreviousTabIndexInRun(tabCount, tabIndex); |
| } |
| navigateTo(tabIndex); |
| } |
| |
| protected void selectNextTab(int current) { |
| int tabIndex = getNextTabIndex(current); |
| |
| while (tabIndex != current && !tabPane.isEnabledAt(tabIndex)) { |
| tabIndex = getNextTabIndex(tabIndex); |
| } |
| navigateTo(tabIndex); |
| } |
| |
| protected void selectPreviousTab(int current) { |
| int tabIndex = getPreviousTabIndex(current); |
| |
| while (tabIndex != current && !tabPane.isEnabledAt(tabIndex)) { |
| tabIndex = getPreviousTabIndex(tabIndex); |
| } |
| navigateTo(tabIndex); |
| } |
| |
| protected void selectAdjacentRunTab(int tabPlacement, |
| int tabIndex, int offset) { |
| if ( runCount < 2 ) { |
| return; |
| } |
| int newIndex; |
| Rectangle r = rects[tabIndex]; |
| switch(tabPlacement) { |
| case LEFT: |
| case RIGHT: |
| newIndex = tabForCoordinate(tabPane, r.x + r.width/2 + offset, |
| r.y + r.height/2); |
| break; |
| case BOTTOM: |
| case TOP: |
| default: |
| newIndex = tabForCoordinate(tabPane, r.x + r.width/2, |
| r.y + r.height/2 + offset); |
| } |
| if (newIndex != -1) { |
| while (!tabPane.isEnabledAt(newIndex) && newIndex != tabIndex) { |
| newIndex = getNextTabIndex(newIndex); |
| } |
| navigateTo(newIndex); |
| } |
| } |
| |
| private void navigateTo(int index) { |
| if (DefaultLookup.getBoolean(tabPane, this, |
| "TabbedPane.selectionFollowsFocus", true)) { |
| tabPane.setSelectedIndex(index); |
| } else { |
| // Just move focus (not selection) |
| setFocusIndex(index, true); |
| } |
| } |
| |
| void setFocusIndex(int index, boolean repaint) { |
| if (repaint && !isRunsDirty) { |
| repaintTab(focusIndex); |
| focusIndex = index; |
| repaintTab(focusIndex); |
| } |
| else { |
| focusIndex = index; |
| } |
| } |
| |
| /** |
| * Repaints the specified tab. |
| */ |
| private void repaintTab(int index) { |
| // If we're not valid that means we will shortly be validated and |
| // painted, which means we don't have to do anything here. |
| if (!isRunsDirty && index >= 0 && index < tabPane.getTabCount()) { |
| tabPane.repaint(getTabBounds(tabPane, index)); |
| } |
| } |
| |
| /** |
| * Makes sure the focusIndex is valid. |
| */ |
| private void validateFocusIndex() { |
| if (focusIndex >= tabPane.getTabCount()) { |
| setFocusIndex(tabPane.getSelectedIndex(), false); |
| } |
| } |
| |
| /** |
| * Returns the index of the tab that has focus. |
| * |
| * @return index of tab that has focus |
| * @since 1.5 |
| */ |
| protected int getFocusIndex() { |
| return focusIndex; |
| } |
| |
| protected int getTabRunOffset(int tabPlacement, int tabCount, |
| int tabIndex, boolean forward) { |
| int run = getRunForTab(tabCount, tabIndex); |
| int offset; |
| switch(tabPlacement) { |
| case LEFT: { |
| if (run == 0) { |
| offset = (forward? |
| -(calculateTabAreaWidth(tabPlacement, runCount, maxTabWidth)-maxTabWidth) : |
| -maxTabWidth); |
| |
| } else if (run == runCount - 1) { |
| offset = (forward? |
| maxTabWidth : |
| calculateTabAreaWidth(tabPlacement, runCount, maxTabWidth)-maxTabWidth); |
| } else { |
| offset = (forward? maxTabWidth : -maxTabWidth); |
| } |
| break; |
| } |
| case RIGHT: { |
| if (run == 0) { |
| offset = (forward? |
| maxTabWidth : |
| calculateTabAreaWidth(tabPlacement, runCount, maxTabWidth)-maxTabWidth); |
| } else if (run == runCount - 1) { |
| offset = (forward? |
| -(calculateTabAreaWidth(tabPlacement, runCount, maxTabWidth)-maxTabWidth) : |
| -maxTabWidth); |
| } else { |
| offset = (forward? maxTabWidth : -maxTabWidth); |
| } |
| break; |
| } |
| case BOTTOM: { |
| if (run == 0) { |
| offset = (forward? |
| maxTabHeight : |
| calculateTabAreaHeight(tabPlacement, runCount, maxTabHeight)-maxTabHeight); |
| } else if (run == runCount - 1) { |
| offset = (forward? |
| -(calculateTabAreaHeight(tabPlacement, runCount, maxTabHeight)-maxTabHeight) : |
| -maxTabHeight); |
| } else { |
| offset = (forward? maxTabHeight : -maxTabHeight); |
| } |
| break; |
| } |
| case TOP: |
| default: { |
| if (run == 0) { |
| offset = (forward? |
| -(calculateTabAreaHeight(tabPlacement, runCount, maxTabHeight)-maxTabHeight) : |
| -maxTabHeight); |
| } else if (run == runCount - 1) { |
| offset = (forward? |
| maxTabHeight : |
| calculateTabAreaHeight(tabPlacement, runCount, maxTabHeight)-maxTabHeight); |
| } else { |
| offset = (forward? maxTabHeight : -maxTabHeight); |
| } |
| } |
| } |
| return offset; |
| } |
| |
| protected int getPreviousTabIndex(int base) { |
| int tabIndex = (base - 1 >= 0? base - 1 : tabPane.getTabCount() - 1); |
| return (tabIndex >= 0? tabIndex : 0); |
| } |
| |
| protected int getNextTabIndex(int base) { |
| return (base+1)%tabPane.getTabCount(); |
| } |
| |
| protected int getNextTabIndexInRun(int tabCount, int base) { |
| if (runCount < 2) { |
| return getNextTabIndex(base); |
| } |
| int currentRun = getRunForTab(tabCount, base); |
| int next = getNextTabIndex(base); |
| if (next == tabRuns[getNextTabRun(currentRun)]) { |
| return tabRuns[currentRun]; |
| } |
| return next; |
| } |
| |
| protected int getPreviousTabIndexInRun(int tabCount, int base) { |
| if (runCount < 2) { |
| return getPreviousTabIndex(base); |
| } |
| int currentRun = getRunForTab(tabCount, base); |
| if (base == tabRuns[currentRun]) { |
| int previous = tabRuns[getNextTabRun(currentRun)]-1; |
| return (previous != -1? previous : tabCount-1); |
| } |
| return getPreviousTabIndex(base); |
| } |
| |
| protected int getPreviousTabRun(int baseRun) { |
| int runIndex = (baseRun - 1 >= 0? baseRun - 1 : runCount - 1); |
| return (runIndex >= 0? runIndex : 0); |
| } |
| |
| protected int getNextTabRun(int baseRun) { |
| return (baseRun+1)%runCount; |
| } |
| |
| protected static void rotateInsets(Insets topInsets, Insets targetInsets, int targetPlacement) { |
| |
| switch(targetPlacement) { |
| case LEFT: |
| targetInsets.top = topInsets.left; |
| targetInsets.left = topInsets.top; |
| targetInsets.bottom = topInsets.right; |
| targetInsets.right = topInsets.bottom; |
| break; |
| case BOTTOM: |
| targetInsets.top = topInsets.bottom; |
| targetInsets.left = topInsets.left; |
| targetInsets.bottom = topInsets.top; |
| targetInsets.right = topInsets.right; |
| break; |
| case RIGHT: |
| targetInsets.top = topInsets.left; |
| targetInsets.left = topInsets.bottom; |
| targetInsets.bottom = topInsets.right; |
| targetInsets.right = topInsets.top; |
| break; |
| case TOP: |
| default: |
| targetInsets.top = topInsets.top; |
| targetInsets.left = topInsets.left; |
| targetInsets.bottom = topInsets.bottom; |
| targetInsets.right = topInsets.right; |
| } |
| } |
| |
| // REMIND(aim,7/29/98): This method should be made |
| // protected in the next release where |
| // API changes are allowed |
| boolean requestFocusForVisibleComponent() { |
| return SwingUtilities2.tabbedPaneChangeFocusTo(getVisibleComponent()); |
| } |
| |
| private static class Actions extends UIAction { |
| final static String NEXT = "navigateNext"; |
| final static String PREVIOUS = "navigatePrevious"; |
| final static String RIGHT = "navigateRight"; |
| final static String LEFT = "navigateLeft"; |
| final static String UP = "navigateUp"; |
| final static String DOWN = "navigateDown"; |
| final static String PAGE_UP = "navigatePageUp"; |
| final static String PAGE_DOWN = "navigatePageDown"; |
| final static String REQUEST_FOCUS = "requestFocus"; |
| final static String REQUEST_FOCUS_FOR_VISIBLE = |
| "requestFocusForVisibleComponent"; |
| final static String SET_SELECTED = "setSelectedIndex"; |
| final static String SELECT_FOCUSED = "selectTabWithFocus"; |
| final static String SCROLL_FORWARD = "scrollTabsForwardAction"; |
| final static String SCROLL_BACKWARD = "scrollTabsBackwardAction"; |
| |
| Actions(String key) { |
| super(key); |
| } |
| |
| public void actionPerformed(ActionEvent e) { |
| String key = getName(); |
| JTabbedPane pane = (JTabbedPane)e.getSource(); |
| BasicTabbedPaneUI ui = (BasicTabbedPaneUI)BasicLookAndFeel. |
| getUIOfType(pane.getUI(), BasicTabbedPaneUI.class); |
| |
| if (ui == null) { |
| return; |
| } |
| if (key == NEXT) { |
| ui.navigateSelectedTab(SwingConstants.NEXT); |
| } |
| else if (key == PREVIOUS) { |
| ui.navigateSelectedTab(SwingConstants.PREVIOUS); |
| } |
| else if (key == RIGHT) { |
| ui.navigateSelectedTab(SwingConstants.EAST); |
| } |
| else if (key == LEFT) { |
| ui.navigateSelectedTab(SwingConstants.WEST); |
| } |
| else if (key == UP) { |
| ui.navigateSelectedTab(SwingConstants.NORTH); |
| } |
| else if (key == DOWN) { |
| ui.navigateSelectedTab(SwingConstants.SOUTH); |
| } |
| else if (key == PAGE_UP) { |
| int tabPlacement = pane.getTabPlacement(); |
| if (tabPlacement == TOP|| tabPlacement == BOTTOM) { |
| ui.navigateSelectedTab(SwingConstants.WEST); |
| } else { |
| ui.navigateSelectedTab(SwingConstants.NORTH); |
| } |
| } |
| else if (key == PAGE_DOWN) { |
| int tabPlacement = pane.getTabPlacement(); |
| if (tabPlacement == TOP || tabPlacement == BOTTOM) { |
| ui.navigateSelectedTab(SwingConstants.EAST); |
| } else { |
| ui.navigateSelectedTab(SwingConstants.SOUTH); |
| } |
| } |
| else if (key == REQUEST_FOCUS) { |
| pane.requestFocus(); |
| } |
| else if (key == REQUEST_FOCUS_FOR_VISIBLE) { |
| ui.requestFocusForVisibleComponent(); |
| } |
| else if (key == SET_SELECTED) { |
| String command = e.getActionCommand(); |
| |
| if (command != null && command.length() > 0) { |
| int mnemonic = (int)e.getActionCommand().charAt(0); |
| if (mnemonic >= 'a' && mnemonic <='z') { |
| mnemonic -= ('a' - 'A'); |
| } |
| Integer index = ui.mnemonicToIndexMap.get(Integer.valueOf(mnemonic)); |
| if (index != null && pane.isEnabledAt(index.intValue())) { |
| pane.setSelectedIndex(index.intValue()); |
| } |
| } |
| } |
| else if (key == SELECT_FOCUSED) { |
| int focusIndex = ui.getFocusIndex(); |
| if (focusIndex != -1) { |
| pane.setSelectedIndex(focusIndex); |
| } |
| } |
| else if (key == SCROLL_FORWARD) { |
| if (ui.scrollableTabLayoutEnabled()) { |
| ui.tabScroller.scrollForward(pane.getTabPlacement()); |
| } |
| } |
| else if (key == SCROLL_BACKWARD) { |
| if (ui.scrollableTabLayoutEnabled()) { |
| ui.tabScroller.scrollBackward(pane.getTabPlacement()); |
| } |
| } |
| } |
| } |
| |
| /** |
| * This class should be treated as a "protected" inner class. |
| * Instantiate it only within subclasses of BasicTabbedPaneUI. |
| */ |
| public class TabbedPaneLayout implements LayoutManager { |
| |
| public void addLayoutComponent(String name, Component comp) {} |
| |
| public void removeLayoutComponent(Component comp) {} |
| |
| public Dimension preferredLayoutSize(Container parent) { |
| return calculateSize(false); |
| } |
| |
| public Dimension minimumLayoutSize(Container parent) { |
| return calculateSize(true); |
| } |
| |
| protected Dimension calculateSize(boolean minimum) { |
| int tabPlacement = tabPane.getTabPlacement(); |
| Insets insets = tabPane.getInsets(); |
| Insets contentInsets = getContentBorderInsets(tabPlacement); |
| Insets tabAreaInsets = getTabAreaInsets(tabPlacement); |
| |
| Dimension zeroSize = new Dimension(0,0); |
| int height = 0; |
| int width = 0; |
| int cWidth = 0; |
| int cHeight = 0; |
| |
| // Determine minimum size required to display largest |
| // child in each dimension |
| // |
| for (int i = 0; i < tabPane.getTabCount(); i++) { |
| Component component = tabPane.getComponentAt(i); |
| if (component != null) { |
| Dimension size = minimum ? component.getMinimumSize() : |
| component.getPreferredSize(); |
| |
| if (size != null) { |
| cHeight = Math.max(size.height, cHeight); |
| cWidth = Math.max(size.width, cWidth); |
| } |
| } |
| } |
| // Add content border insets to minimum size |
| width += cWidth; |
| height += cHeight; |
| int tabExtent; |
| |
| // Calculate how much space the tabs will need, based on the |
| // minimum size required to display largest child + content border |
| // |
| switch(tabPlacement) { |
| case LEFT: |
| case RIGHT: |
| height = Math.max(height, calculateMaxTabHeight(tabPlacement)); |
| tabExtent = preferredTabAreaWidth(tabPlacement, height - tabAreaInsets.top - tabAreaInsets.bottom); |
| width += tabExtent; |
| break; |
| case TOP: |
| case BOTTOM: |
| default: |
| width = Math.max(width, calculateMaxTabWidth(tabPlacement)); |
| tabExtent = preferredTabAreaHeight(tabPlacement, width - tabAreaInsets.left - tabAreaInsets.right); |
| height += tabExtent; |
| } |
| return new Dimension(width + insets.left + insets.right + contentInsets.left + contentInsets.right, |
| height + insets.bottom + insets.top + contentInsets.top + contentInsets.bottom); |
| |
| } |
| |
| protected int preferredTabAreaHeight(int tabPlacement, int width) { |
| FontMetrics metrics = getFontMetrics(); |
| int tabCount = tabPane.getTabCount(); |
| int total = 0; |
| if (tabCount > 0) { |
| int rows = 1; |
| int x = 0; |
| |
| int maxTabHeight = calculateMaxTabHeight(tabPlacement); |
| |
| for (int i = 0; i < tabCount; i++) { |
| int tabWidth = calculateTabWidth(tabPlacement, i, metrics); |
| |
| if (x != 0 && x + tabWidth > width) { |
| rows++; |
| x = 0; |
| } |
| x += tabWidth; |
| } |
| total = calculateTabAreaHeight(tabPlacement, rows, maxTabHeight); |
| } |
| return total; |
| } |
| |
| protected int preferredTabAreaWidth(int tabPlacement, int height) { |
| FontMetrics metrics = getFontMetrics(); |
| int tabCount = tabPane.getTabCount(); |
| int total = 0; |
| if (tabCount > 0) { |
| int columns = 1; |
| int y = 0; |
| int fontHeight = metrics.getHeight(); |
| |
| maxTabWidth = calculateMaxTabWidth(tabPlacement); |
| |
| for (int i = 0; i < tabCount; i++) { |
| int tabHeight = calculateTabHeight(tabPlacement, i, fontHeight); |
| |
| if (y != 0 && y + tabHeight > height) { |
| columns++; |
| y = 0; |
| } |
| y += tabHeight; |
| } |
| total = calculateTabAreaWidth(tabPlacement, columns, maxTabWidth); |
| } |
| return total; |
| } |
| |
| public void layoutContainer(Container parent) { |
| /* Some of the code in this method deals with changing the |
| * visibility of components to hide and show the contents for the |
| * selected tab. This is older code that has since been duplicated |
| * in JTabbedPane.fireStateChanged(), so as to allow visibility |
| * changes to happen sooner (see the note there). This code remains |
| * for backward compatibility as there are some cases, such as |
| * subclasses that don't fireStateChanged() where it may be used. |
| * Any changes here need to be kept in synch with |
| * JTabbedPane.fireStateChanged(). |
| */ |
| |
| setRolloverTab(-1); |
| |
| int tabPlacement = tabPane.getTabPlacement(); |
| Insets insets = tabPane.getInsets(); |
| int selectedIndex = tabPane.getSelectedIndex(); |
| Component visibleComponent = getVisibleComponent(); |
| |
| calculateLayoutInfo(); |
| |
| Component selectedComponent = null; |
| if (selectedIndex < 0) { |
| if (visibleComponent != null) { |
| // The last tab was removed, so remove the component |
| setVisibleComponent(null); |
| } |
| } else { |
| selectedComponent = tabPane.getComponentAt(selectedIndex); |
| } |
| int cx, cy, cw, ch; |
| int totalTabWidth = 0; |
| int totalTabHeight = 0; |
| Insets contentInsets = getContentBorderInsets(tabPlacement); |
| |
| boolean shouldChangeFocus = false; |
| |
| // In order to allow programs to use a single component |
| // as the display for multiple tabs, we will not change |
| // the visible compnent if the currently selected tab |
| // has a null component. This is a bit dicey, as we don't |
| // explicitly state we support this in the spec, but since |
| // programs are now depending on this, we're making it work. |
| // |
| if(selectedComponent != null) { |
| if(selectedComponent != visibleComponent && |
| visibleComponent != null) { |
| if(SwingUtilities.findFocusOwner(visibleComponent) != null) { |
| shouldChangeFocus = true; |
| } |
| } |
| setVisibleComponent(selectedComponent); |
| } |
| |
| Rectangle bounds = tabPane.getBounds(); |
| int numChildren = tabPane.getComponentCount(); |
| |
| if(numChildren > 0) { |
| |
| switch(tabPlacement) { |
| case LEFT: |
| totalTabWidth = calculateTabAreaWidth(tabPlacement, runCount, maxTabWidth); |
| cx = insets.left + totalTabWidth + contentInsets.left; |
| cy = insets.top + contentInsets.top; |
| break; |
| case RIGHT: |
| totalTabWidth = calculateTabAreaWidth(tabPlacement, runCount, maxTabWidth); |
| cx = insets.left + contentInsets.left; |
| cy = insets.top + contentInsets.top; |
| break; |
| case BOTTOM: |
| totalTabHeight = calculateTabAreaHeight(tabPlacement, runCount, maxTabHeight); |
| cx = insets.left + contentInsets.left; |
| cy = insets.top + contentInsets.top; |
| break; |
| case TOP: |
| default: |
| totalTabHeight = calculateTabAreaHeight(tabPlacement, runCount, maxTabHeight); |
| cx = insets.left + contentInsets.left; |
| cy = insets.top + totalTabHeight + contentInsets.top; |
| } |
| |
| cw = bounds.width - totalTabWidth - |
| insets.left - insets.right - |
| contentInsets.left - contentInsets.right; |
| ch = bounds.height - totalTabHeight - |
| insets.top - insets.bottom - |
| contentInsets.top - contentInsets.bottom; |
| |
| for(int i = 0; i < numChildren; i++) { |
| Component child = tabPane.getComponent(i); |
| if(child == tabContainer) { |
| |
| int tabContainerWidth = totalTabWidth == 0 ? bounds.width : |
| totalTabWidth + insets.left + insets.right + |
| contentInsets.left + contentInsets.right; |
| int tabContainerHeight = totalTabHeight == 0 ? bounds.height : |
| totalTabHeight + insets.top + insets.bottom + |
| contentInsets.top + contentInsets.bottom; |
| |
| int tabContainerX = 0; |
| int tabContainerY = 0; |
| if(tabPlacement == BOTTOM) { |
| tabContainerY = bounds.height - tabContainerHeight; |
| } else if(tabPlacement == RIGHT) { |
| tabContainerX = bounds.width - tabContainerWidth; |
| } |
| child.setBounds(tabContainerX, tabContainerY, tabContainerWidth, tabContainerHeight); |
| } else { |
| child.setBounds(cx, cy, cw, ch); |
| } |
| } |
| } |
| layoutTabComponents(); |
| if(shouldChangeFocus) { |
| if(!requestFocusForVisibleComponent()) { |
| tabPane.requestFocus(); |
| } |
| } |
| } |
| |
| public void calculateLayoutInfo() { |
| int tabCount = tabPane.getTabCount(); |
| assureRectsCreated(tabCount); |
| calculateTabRects(tabPane.getTabPlacement(), tabCount); |
| isRunsDirty = false; |
| } |
| |
| private void layoutTabComponents() { |
| if (tabContainer == null) { |
| return; |
| } |
| Rectangle rect = new Rectangle(); |
| Point delta = new Point(-tabContainer.getX(), -tabContainer.getY()); |
| if (scrollableTabLayoutEnabled()) { |
| translatePointToTabPanel(0, 0, delta); |
| } |
| for (int i = 0; i < tabPane.getTabCount(); i++) { |
| Component c = tabPane.getTabComponentAt(i); |
| if (c == null) { |
| continue; |
| } |
| getTabBounds(i, rect); |
| Dimension preferredSize = c.getPreferredSize(); |
| Insets insets = getTabInsets(tabPane.getTabPlacement(), i); |
| int outerX = rect.x + insets.left + delta.x; |
| int outerY = rect.y + insets.top + delta.y; |
| int outerWidth = rect.width - insets.left - insets.right; |
| int outerHeight = rect.height - insets.top - insets.bottom; |
| //centralize component |
| int x = outerX + (outerWidth - preferredSize.width) / 2; |
| int y = outerY + (outerHeight - preferredSize.height) / 2; |
| int tabPlacement = tabPane.getTabPlacement(); |
| boolean isSeleceted = i == tabPane.getSelectedIndex(); |
| c.setBounds(x + getTabLabelShiftX(tabPlacement, i, isSeleceted), |
| y + getTabLabelShiftY(tabPlacement, i, isSeleceted), |
| preferredSize.width, preferredSize.height); |
| } |
| } |
| |
| protected void calculateTabRects(int tabPlacement, int tabCount) { |
| FontMetrics metrics = getFontMetrics(); |
| Dimension size = tabPane.getSize(); |
| Insets insets = tabPane.getInsets(); |
| Insets tabAreaInsets = getTabAreaInsets(tabPlacement); |
| int fontHeight = metrics.getHeight(); |
| int selectedIndex = tabPane.getSelectedIndex(); |
| int tabRunOverlay; |
| int i, j; |
| int x, y; |
| int returnAt; |
| boolean verticalTabRuns = (tabPlacement == LEFT || tabPlacement == RIGHT); |
| boolean leftToRight = BasicGraphicsUtils.isLeftToRight(tabPane); |
| |
| // |
| // Calculate bounds within which a tab run must fit |
| // |
| switch(tabPlacement) { |
| case LEFT: |
| maxTabWidth = calculateMaxTabWidth(tabPlacement); |
| x = insets.left + tabAreaInsets.left; |
| y = insets.top + tabAreaInsets.top; |
| returnAt = size.height - (insets.bottom + tabAreaInsets.bottom); |
| break; |
| case RIGHT: |
| maxTabWidth = calculateMaxTabWidth(tabPlacement); |
| x = size.width - insets.right - tabAreaInsets.right - maxTabWidth; |
| y = insets.top + tabAreaInsets.top; |
| returnAt = size.height - (insets.bottom + tabAreaInsets.bottom); |
| break; |
| case BOTTOM: |
| maxTabHeight = calculateMaxTabHeight(tabPlacement); |
| x = insets.left + tabAreaInsets.left; |
| y = size.height - insets.bottom - tabAreaInsets.bottom - maxTabHeight; |
| returnAt = size.width - (insets.right + tabAreaInsets.right); |
| break; |
| case TOP: |
| default: |
| maxTabHeight = calculateMaxTabHeight(tabPlacement); |
| x = insets.left + tabAreaInsets.left; |
| y = insets.top + tabAreaInsets.top; |
| returnAt = size.width - (insets.right + tabAreaInsets.right); |
| break; |
| } |
| |
| tabRunOverlay = getTabRunOverlay(tabPlacement); |
| |
| runCount = 0; |
| selectedRun = -1; |
| |
| if (tabCount == 0) { |
| return; |
| } |
| |
| // Run through tabs and partition them into runs |
| Rectangle rect; |
| for (i = 0; i < tabCount; i++) { |
| rect = rects[i]; |
| |
| if (!verticalTabRuns) { |
| // Tabs on TOP or BOTTOM.... |
| if (i > 0) { |
| rect.x = rects[i-1].x + rects[i-1].width; |
| } else { |
| tabRuns[0] = 0; |
| runCount = 1; |
| maxTabWidth = 0; |
| rect.x = x; |
| } |
| rect.width = calculateTabWidth(tabPlacement, i, metrics); |
| maxTabWidth = Math.max(maxTabWidth, rect.width); |
| |
| // Never move a TAB down a run if it is in the first column. |
| // Even if there isn't enough room, moving it to a fresh |
| // line won't help. |
| if (rect.x != x && rect.x + rect.width > returnAt) { |
| if (runCount > tabRuns.length - 1) { |
| expandTabRunsArray(); |
| } |
| tabRuns[runCount] = i; |
| runCount++; |
| rect.x = x; |
| } |
| // Initialize y position in case there's just one run |
| rect.y = y; |
| rect.height = maxTabHeight/* - 2*/; |
| |
| } else { |
| // Tabs on LEFT or RIGHT... |
| if (i > 0) { |
| rect.y = rects[i-1].y + rects[i-1].height; |
| } else { |
| tabRuns[0] = 0; |
| runCount = 1; |
| maxTabHeight = 0; |
| rect.y = y; |
| } |
| rect.height = calculateTabHeight(tabPlacement, i, fontHeight); |
| maxTabHeight = Math.max(maxTabHeight, rect.height); |
| |
| // Never move a TAB over a run if it is in the first run. |
| // Even if there isn't enough room, moving it to a fresh |
| // column won't help. |
| if (rect.y != y && rect.y + rect.height > returnAt) { |
| if (runCount > tabRuns.length - 1) { |
| expandTabRunsArray(); |
| } |
| tabRuns[runCount] = i; |
| runCount++; |
| rect.y = y; |
| } |
| // Initialize x position in case there's just one column |
| rect.x = x; |
| rect.width = maxTabWidth/* - 2*/; |
| |
| } |
| if (i == selectedIndex) { |
| selectedRun = runCount - 1; |
| } |
| } |
| |
| if (runCount > 1) { |
| // Re-distribute tabs in case last run has leftover space |
| normalizeTabRuns(tabPlacement, tabCount, verticalTabRuns? y : x, returnAt); |
| |
| selectedRun = getRunForTab(tabCount, selectedIndex); |
| |
| // Rotate run array so that selected run is first |
| if (shouldRotateTabRuns(tabPlacement)) { |
| rotateTabRuns(tabPlacement, selectedRun); |
| } |
| } |
| |
| // Step through runs from back to front to calculate |
| // tab y locations and to pad runs appropriately |
| for (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); |
| if (!verticalTabRuns) { |
| for (j = start; j <= end; j++) { |
| rect = rects[j]; |
| rect.y = y; |
| rect.x += getTabRunIndent(tabPlacement, i); |
| } |
| if (shouldPadTabRun(tabPlacement, i)) { |
| padTabRun(tabPlacement, start, end, returnAt); |
| } |
| if (tabPlacement == BOTTOM) { |
| y -= (maxTabHeight - tabRunOverlay); |
| } else { |
| y += (maxTabHeight - tabRunOverlay); |
| } |
| } else { |
| for (j = start; j <= end; j++) { |
| rect = rects[j]; |
| rect.x = x; |
| rect.y += getTabRunIndent(tabPlacement, i); |
| } |
| if (shouldPadTabRun(tabPlacement, i)) { |
| padTabRun(tabPlacement, start, end, returnAt); |
| } |
| if (tabPlacement == RIGHT) { |
| x -= (maxTabWidth - tabRunOverlay); |
| } else { |
| x += (maxTabWidth - tabRunOverlay); |
| } |
| } |
| } |
| |
| // Pad the selected tab so that it appears raised in front |
| padSelectedTab(tabPlacement, selectedIndex); |
| |
| // if right to left and tab placement on the top or |
| // the bottom, flip x positions and adjust by widths |
| if (!leftToRight && !verticalTabRuns) { |
| int rightMargin = size.width |
| - (insets.right + tabAreaInsets.right); |
| for (i = 0; i < tabCount; i++) { |
| rects[i].x = rightMargin - rects[i].x - rects[i].width; |
| } |
| } |
| } |
| |
| |
| /* |
| * Rotates the run-index array so that the selected run is run[0] |
| */ |
| protected void rotateTabRuns(int tabPlacement, int selectedRun) { |
| for (int i = 0; i < selectedRun; i++) { |
| int save = tabRuns[0]; |
| for (int j = 1; j < runCount; j++) { |
| tabRuns[j - 1] = tabRuns[j]; |
| } |
| tabRuns[runCount-1] = save; |
| } |
| } |
| |
| protected void normalizeTabRuns(int tabPlacement, int tabCount, |
| int start, int max) { |
| boolean verticalTabRuns = (tabPlacement == LEFT || tabPlacement == RIGHT); |
| int run = runCount - 1; |
| boolean keepAdjusting = true; |
| double weight = 1.25; |
| |
| // At this point the tab runs are packed to fit as many |
| // tabs as possible, which can leave the last run with a lot |
| // of extra space (resulting in very fat tabs on the last run). |
| // So we'll attempt to distribute this extra space more evenly |
| // across the runs in order to make the runs look more consistent. |
| // |
| // Starting with the last run, determine whether the last tab in |
| // the previous run would fit (generously) in this run; if so, |
| // move tab to current run and shift tabs accordingly. Cycle |
| // through remaining runs using the same algorithm. |
| // |
| while (keepAdjusting) { |
| int last = lastTabInRun(tabCount, run); |
| int prevLast = lastTabInRun(tabCount, run-1); |
| int end; |
| int prevLastLen; |
| |
| if (!verticalTabRuns) { |
| end = rects[last].x + rects[last].width; |
| prevLastLen = (int)(maxTabWidth*weight); |
| } else { |
| end = rects[last].y + rects[last].height; |
| prevLastLen = (int)(maxTabHeight*weight*2); |
| } |
| |
| // Check if the run has enough extra space to fit the last tab |
| // from the previous row... |
| if (max - end > prevLastLen) { |
| |
| // Insert tab from previous row and shift rest over |
| tabRuns[run] = prevLast; |
| if (!verticalTabRuns) { |
| rects[prevLast].x = start; |
| } else { |
| rects[prevLast].y = start; |
| } |
| for (int i = prevLast+1; i <= last; i++) { |
| if (!verticalTabRuns) { |
| rects[i].x = rects[i-1].x + rects[i-1].width; |
| } else { |
| rects[i].y = rects[i-1].y + rects[i-1].height; |
| } |
| } |
| |
| } else if (run == runCount - 1) { |
| // no more room left in last run, so we're done! |
| keepAdjusting = false; |
| } |
| if (run - 1 > 0) { |
| // check previous run next... |
| run -= 1; |
| } else { |
| // check last run again...but require a higher ratio |
| // of extraspace-to-tabsize because we don't want to |
| // end up with too many tabs on the last run! |
| run = runCount - 1; |
| weight += .25; |
| } |
| } |
| } |
| |
| protected void padTabRun(int tabPlacement, int start, int end, int max) { |
| Rectangle lastRect = rects[end]; |
| if (tabPlacement == TOP || tabPlacement == BOTTOM) { |
| int runWidth = (lastRect.x + lastRect.width) - rects[start].x; |
| int deltaWidth = max - (lastRect.x + lastRect.width); |
| float factor = (float)deltaWidth / (float)runWidth; |
| |
| for (int j = start; j <= end; j++) { |
| Rectangle pastRect = rects[j]; |
| if (j > start) { |
| pastRect.x = rects[j-1].x + rects[j-1].width; |
| } |
| pastRect.width += Math.round((float)pastRect.width * factor); |
| } |
| lastRect.width = max - lastRect.x; |
| } else { |
| int runHeight = (lastRect.y + lastRect.height) - rects[start].y; |
| int deltaHeight = max - (lastRect.y + lastRect.height); |
| float factor = (float)deltaHeight / (float)runHeight; |
| |
| for (int j = start; j <= end; j++) { |
| Rectangle pastRect = rects[j]; |
| if (j > start) { |
| pastRect.y = rects[j-1].y + rects[j-1].height; |
| } |
| pastRect.height += Math.round((float)pastRect.height * factor); |
| } |
| lastRect.height = max - lastRect.y; |
| } |
| } |
| |
| protected void padSelectedTab(int tabPlacement, int selectedIndex) { |
| |
| if (selectedIndex >= 0) { |
| Rectangle selRect = rects[selectedIndex]; |
| Insets padInsets = getSelectedTabPadInsets(tabPlacement); |
| selRect.x -= padInsets.left; |
| selRect.width += (padInsets.left + padInsets.right); |
| selRect.y -= padInsets.top; |
| selRect.height += (padInsets.top + padInsets.bottom); |
| |
| if (!scrollableTabLayoutEnabled()) { // WRAP_TAB_LAYOUT |
| // do not expand selected tab more then necessary |
| Dimension size = tabPane.getSize(); |
| Insets insets = tabPane.getInsets(); |
| |
| if ((tabPlacement == LEFT) || (tabPlacement == RIGHT)) { |
| int top = insets.top - selRect.y; |
| if (top > 0) { |
| selRect.y += top; |
| selRect.height -= top; |
| } |
| int bottom = (selRect.y + selRect.height) + insets.bottom - size.height; |
| if (bottom > 0) { |
| selRect.height -= bottom; |
| } |
| } else { |
| int left = insets.left - selRect.x; |
| if (left > 0) { |
| selRect.x += left; |
| selRect.width -= left; |
| } |
| int right = (selRect.x + selRect.width) + insets.right - size.width; |
| if (right > 0) { |
| selRect.width -= right; |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| private class TabbedPaneScrollLayout extends TabbedPaneLayout { |
| |
| protected int preferredTabAreaHeight(int tabPlacement, int width) { |
| return calculateMaxTabHeight(tabPlacement); |
| } |
| |
| protected int preferredTabAreaWidth(int tabPlacement, int height) { |
| return calculateMaxTabWidth(tabPlacement); |
| } |
| |
| public void layoutContainer(Container parent) { |
| /* Some of the code in this method deals with changing the |
| * visibility of components to hide and show the contents for the |
| * selected tab. This is older code that has since been duplicated |
| * in JTabbedPane.fireStateChanged(), so as to allow visibility |
| * changes to happen sooner (see the note there). This code remains |
| * for backward compatibility as there are some cases, such as |
| * subclasses that don't fireStateChanged() where it may be used. |
| * Any changes here need to be kept in synch with |
| * JTabbedPane.fireStateChanged(). |
| */ |
| |
| setRolloverTab(-1); |
| |
| int tabPlacement = tabPane.getTabPlacement(); |
| int tabCount = tabPane.getTabCount(); |
| Insets insets = tabPane.getInsets(); |
| int selectedIndex = tabPane.getSelectedIndex(); |
| Component visibleComponent = getVisibleComponent(); |
| |
| calculateLayoutInfo(); |
| |
| Component selectedComponent = null; |
| if (selectedIndex < 0) { |
| if (visibleComponent != null) { |
| // The last tab was removed, so remove the component |
| setVisibleComponent(null); |
| } |
| } else { |
| selectedComponent = tabPane.getComponentAt(selectedIndex); |
| } |
| |
| if (tabPane.getTabCount() == 0) { |
| tabScroller.croppedEdge.resetParams(); |
| tabScroller.scrollForwardButton.setVisible(false); |
| tabScroller.scrollBackwardButton.setVisible(false); |
| return; |
| } |
| |
| boolean shouldChangeFocus = false; |
| |
| // In order to allow programs to use a single component |
| // as the display for multiple tabs, we will not change |
| // the visible compnent if the currently selected tab |
| // has a null component. This is a bit dicey, as we don't |
| // explicitly state we support this in the spec, but since |
| // programs are now depending on this, we're making it work. |
| // |
| if(selectedComponent != null) { |
| if(selectedComponent != visibleComponent && |
| visibleComponent != null) { |
| if(SwingUtilities.findFocusOwner(visibleComponent) != null) { |
| shouldChangeFocus = true; |
| } |
| } |
| setVisibleComponent(selectedComponent); |
| } |
| int tx, ty, tw, th; // tab area bounds |
| int cx, cy, cw, ch; // content area bounds |
| Insets contentInsets = getContentBorderInsets(tabPlacement); |
| Rectangle bounds = tabPane.getBounds(); |
| int numChildren = tabPane.getComponentCount(); |
| |
| if(numChildren > 0) { |
| switch(tabPlacement) { |
| case LEFT: |
| // calculate tab area bounds |
| tw = calculateTabAreaWidth(tabPlacement, runCount, maxTabWidth); |
| th = bounds.height - insets.top - insets.bottom; |
| tx = insets.left; |
| ty = insets.top; |
| |
| // calculate content area bounds |
| cx = tx + tw + contentInsets.left; |
| cy = ty + contentInsets.top; |
| cw = bounds.width - insets.left - insets.right - tw - |
| contentInsets.left - contentInsets.right; |
| ch = bounds.height - insets.top - insets.bottom - |
| contentInsets.top - contentInsets.bottom; |
| break; |
| case RIGHT: |
| // calculate tab area bounds |
| tw = calculateTabAreaWidth(tabPlacement, runCount, maxTabWidth); |
| th = bounds.height - insets.top - insets.bottom; |
| tx = bounds.width - insets.right - tw; |
| ty = insets.top; |
| |
| // calculate content area bounds |
| cx = insets.left + contentInsets.left; |
| cy = insets.top + contentInsets.top; |
| cw = bounds.width - insets.left - insets.right - tw - |
| contentInsets.left - contentInsets.right; |
| ch = bounds.height - insets.top - insets.bottom - |
| contentInsets.top - contentInsets.bottom; |
| break; |
| case BOTTOM: |
| // calculate tab area bounds |
| tw = bounds.width - insets.left - insets.right; |
| th = calculateTabAreaHeight(tabPlacement, runCount, maxTabHeight); |
| tx = insets.left; |
| ty = bounds.height - insets.bottom - th; |
| |
| // calculate content area bounds |
| cx = insets.left + contentInsets.left; |
| cy = insets.top + contentInsets.top; |
| cw = bounds.width - insets.left - insets.right - |
| contentInsets.left - contentInsets.right; |
| ch = bounds.height - insets.top - insets.bottom - th - |
| contentInsets.top - contentInsets.bottom; |
| break; |
| case TOP: |
| default: |
| // calculate tab area bounds |
| tw = bounds.width - insets.left - insets.right; |
| th = calculateTabAreaHeight(tabPlacement, runCount, maxTabHeight); |
| tx = insets.left; |
| ty = insets.top; |
| |
| // calculate content area bounds |
| cx = tx + contentInsets.left; |
| cy = ty + th + contentInsets.top; |
| cw = bounds.width - insets.left - insets.right - |
| contentInsets.left - contentInsets.right; |
| ch = bounds.height - insets.top - insets.bottom - th - |
| contentInsets.top - contentInsets.bottom; |
| } |
| |
| for(int i = 0; i < numChildren; i++) { |
| Component child = tabPane.getComponent(i); |
| |
| if(tabScroller != null && child == tabScroller.viewport) { |
| JViewport viewport = (JViewport) child; |
| Rectangle viewRect = viewport.getViewRect(); |
| int vw = tw; |
| int vh = th; |
| Dimension butSize = tabScroller.scrollForwardButton.getPreferredSize(); |
| switch(tabPlacement) { |
| case LEFT: |
| case RIGHT: |
| int totalTabHeight = rects[tabCount - 1].y + rects[tabCount - 1].height; |
| if(totalTabHeight > th) { |
| // Allow space for scrollbuttons |
| vh = (th > 2 * butSize.height) ? th - 2 * butSize.height : 0; |
| if(totalTabHeight - viewRect.y <= vh) { |
| // Scrolled to the end, so ensure the viewport size is |
| // such that the scroll offset aligns with a tab |
| vh = totalTabHeight - viewRect.y; |
| } |
| } |
| break; |
| case BOTTOM: |
| case TOP: |
| default: |
| int totalTabWidth = rects[tabCount - 1].x + rects[tabCount - 1].width; |
| if(totalTabWidth > tw) { |
| // Need to allow space for scrollbuttons |
| vw = (tw > 2 * butSize.width) ? tw - 2 * butSize.width : 0; |
| if(totalTabWidth - viewRect.x <= vw) { |
| // Scrolled to the end, so ensure the viewport size is |
| // such that the scroll offset aligns with a tab |
| vw = totalTabWidth - viewRect.x; |
| } |
| } |
| } |
| child.setBounds(tx, ty, vw, vh); |
| |
| } else if(tabScroller != null && |
| (child == tabScroller.scrollForwardButton || |
| child == tabScroller.scrollBackwardButton)) { |
| Component scrollbutton = child; |
| Dimension bsize = scrollbutton.getPreferredSize(); |
| int bx = 0; |
| int by = 0; |
| int bw = bsize.width; |
| int bh = bsize.height; |
| boolean visible = false; |
| |
| switch(tabPlacement) { |
| case LEFT: |
| case RIGHT: |
| int totalTabHeight = rects[tabCount - 1].y + rects[tabCount - 1].height; |
| if(totalTabHeight > th) { |
| visible = true; |
| bx = (tabPlacement == LEFT ? tx + tw - bsize.width : tx); |
| by = (child == tabScroller.scrollForwardButton) ? |
| bounds.height - insets.bottom - bsize.height : |
| bounds.height - insets.bottom - 2 * bsize.height; |
| } |
| break; |
| |
| case BOTTOM: |
| case TOP: |
| default: |
| int totalTabWidth = rects[tabCount - 1].x + rects[tabCount - 1].width; |
| |
| if(totalTabWidth > tw) { |
| visible = true; |
| bx = (child == tabScroller.scrollForwardButton) ? |
| bounds.width - insets.left - bsize.width : |
| bounds.width - insets.left - 2 * bsize.width; |
| by = (tabPlacement == TOP ? ty + th - bsize.height : ty); |
| } |
| } |
| child.setVisible(visible); |
| if(visible) { |
| child.setBounds(bx, by, bw, bh); |
| } |
| |
| } else { |
| // All content children... |
| child.setBounds(cx, cy, cw, ch); |
| } |
| } |
| super.layoutTabComponents(); |
| layoutCroppedEdge(); |
| if(shouldChangeFocus) { |
| if(!requestFocusForVisibleComponent()) { |
| tabPane.requestFocus(); |
| } |
| } |
| } |
| } |
| |
| private void layoutCroppedEdge() { |
| tabScroller.croppedEdge.resetParams(); |
| Rectangle viewRect = tabScroller.viewport.getViewRect(); |
| int cropline; |
| for (int i = 0; i < rects.length; i++) { |
| Rectangle tabRect = rects[i]; |
| switch (tabPane.getTabPlacement()) { |
| case LEFT: |
| case RIGHT: |
| cropline = viewRect.y + viewRect.height; |
| if ((tabRect.y < cropline) && (tabRect.y + tabRect.height > cropline)) { |
| tabScroller.croppedEdge.setParams(i, cropline - tabRect.y - 1, |
| -currentTabAreaInsets.left, 0); |
| } |
| break; |
| case TOP: |
| case BOTTOM: |
| default: |
| cropline = viewRect.x + viewRect.width; |
| if ((tabRect.x < cropline - 1) && (tabRect.x + tabRect.width > cropline)) { |
| tabScroller.croppedEdge.setParams(i, cropline - tabRect.x - 1, |
| 0, -currentTabAreaInsets.top); |
| } |
| } |
| } |
| } |
| |
| protected void calculateTabRects(int tabPlacement, int tabCount) { |
| FontMetrics metrics = getFontMetrics(); |
| Dimension size = tabPane.getSize(); |
| Insets insets = tabPane.getInsets(); |
| Insets tabAreaInsets = getTabAreaInsets(tabPlacement); |
| int fontHeight = metrics.getHeight(); |
| int selectedIndex = tabPane.getSelectedIndex(); |
| int i; |
| boolean verticalTabRuns = (tabPlacement == LEFT || tabPlacement == RIGHT); |
| boolean leftToRight = BasicGraphicsUtils.isLeftToRight(tabPane); |
| int x = tabAreaInsets.left; |
| int y = tabAreaInsets.top; |
| int totalWidth = 0; |
| int totalHeight = 0; |
| |
| // |
| // Calculate bounds within which a tab run must fit |
| // |
| switch(tabPlacement) { |
| case LEFT: |
| case RIGHT: |
| maxTabWidth = calculateMaxTabWidth(tabPlacement); |
| break; |
| case BOTTOM: |
| case TOP: |
| default: |
| maxTabHeight = calculateMaxTabHeight(tabPlacement); |
| } |
| |
| runCount = 0; |
| selectedRun = -1; |
| |
| if (tabCount == 0) { |
| return; |
| } |
| |
| selectedRun = 0; |
| runCount = 1; |
| |
| // Run through tabs and lay them out in a single run |
| Rectangle rect; |
| for (i = 0; i < tabCount; i++) { |
| rect = rects[i]; |
| |
| if (!verticalTabRuns) { |
| // Tabs on TOP or BOTTOM.... |
| if (i > 0) { |
| rect.x = rects[i-1].x + rects[i-1].width; |
| } else { |
| tabRuns[0] = 0; |
| maxTabWidth = 0; |
| totalHeight += maxTabHeight; |
| rect.x = x; |
| } |
| rect.width = calculateTabWidth(tabPlacement, i, metrics); |
| totalWidth = rect.x + rect.width; |
| maxTabWidth = Math.max(maxTabWidth, rect.width); |
| |
| rect.y = y; |
| rect.height = maxTabHeight/* - 2*/; |
| |
| } else { |
| // Tabs on LEFT or RIGHT... |
| if (i > 0) { |
| rect.y = rects[i-1].y + rects[i-1].height; |
| } else { |
| tabRuns[0] = 0; |
| maxTabHeight = 0; |
| totalWidth = maxTabWidth; |
| rect.y = y; |
| } |
| rect.height = calculateTabHeight(tabPlacement, i, fontHeight); |
| totalHeight = rect.y + rect.height; |
| maxTabHeight = Math.max(maxTabHeight, rect.height); |
| |
| rect.x = x; |
| rect.width = maxTabWidth/* - 2*/; |
| |
| } |
| } |
| |
| if (tabsOverlapBorder) { |
| // Pad the selected tab so that it appears raised in front |
| padSelectedTab(tabPlacement, selectedIndex); |
| } |
| |
| // if right to left and tab placement on the top or |
| // the bottom, flip x positions and adjust by widths |
| if (!leftToRight && !verticalTabRuns) { |
| int rightMargin = size.width |
| - (insets.right + tabAreaInsets.right); |
| for (i = 0; i < tabCount; i++) { |
| rects[i].x = rightMargin - rects[i].x - rects[i].width; |
| } |
| } |
| tabScroller.tabPanel.setPreferredSize(new Dimension(totalWidth, totalHeight)); |
| } |
| } |
| |
| private class ScrollableTabSupport implements ActionListener, |
| ChangeListener { |
| public ScrollableTabViewport viewport; |
| public ScrollableTabPanel tabPanel; |
| public JButton scrollForwardButton; |
| public JButton scrollBackwardButton; |
| public CroppedEdge croppedEdge; |
| public int leadingTabIndex; |
| |
| private Point tabViewPosition = new Point(0,0); |
| |
| ScrollableTabSupport(int tabPlacement) { |
| viewport = new ScrollableTabViewport(); |
| tabPanel = new ScrollableTabPanel(); |
| viewport.setView(tabPanel); |
| viewport.addChangeListener(this); |
| croppedEdge = new CroppedEdge(); |
| createButtons(); |
| } |
| |
| /** |
| * Recreates the scroll buttons and adds them to the TabbedPane. |
| */ |
| void createButtons() { |
| if (scrollForwardButton != null) { |
| tabPane.remove(scrollForwardButton); |
| scrollForwardButton.removeActionListener(this); |
| tabPane.remove(scrollBackwardButton); |
| scrollBackwardButton.removeActionListener(this); |
| } |
| int tabPlacement = tabPane.getTabPlacement(); |
| if (tabPlacement == TOP || tabPlacement == BOTTOM) { |
| scrollForwardButton = createScrollButton(EAST); |
| scrollBackwardButton = createScrollButton(WEST); |
| |
| } else { // tabPlacement = LEFT || RIGHT |
| scrollForwardButton = createScrollButton(SOUTH); |
| scrollBackwardButton = createScrollButton(NORTH); |
| } |
| scrollForwardButton.addActionListener(this); |
| scrollBackwardButton.addActionListener(this); |
| tabPane.add(scrollForwardButton); |
| tabPane.add(scrollBackwardButton); |
| } |
| |
| public void scrollForward(int tabPlacement) { |
| Dimension viewSize = viewport.getViewSize(); |
| Rectangle viewRect = viewport.getViewRect(); |
| |
| if (tabPlacement == TOP || tabPlacement == BOTTOM) { |
| if (viewRect.width >= viewSize.width - viewRect.x) { |
| return; // no room left to scroll |
| } |
| } else { // tabPlacement == LEFT || tabPlacement == RIGHT |
| if (viewRect.height >= viewSize.height - viewRect.y) { |
| return; |
| } |
| } |
| setLeadingTabIndex(tabPlacement, leadingTabIndex+1); |
| } |
| |
| public void scrollBackward(int tabPlacement) { |
| if (leadingTabIndex == 0) { |
| return; // no room left to scroll |
| } |
| setLeadingTabIndex(tabPlacement, leadingTabIndex-1); |
| } |
| |
| public void setLeadingTabIndex(int tabPlacement, int index) { |
| leadingTabIndex = index; |
| Dimension viewSize = viewport.getViewSize(); |
| Rectangle viewRect = viewport.getViewRect(); |
| |
| switch(tabPlacement) { |
| case TOP: |
| case BOTTOM: |
| tabViewPosition.x = leadingTabIndex == 0? 0 : rects[leadingTabIndex].x; |
| |
| if ((viewSize.width - tabViewPosition.x) < viewRect.width) { |
| // We've scrolled to the end, so adjust the viewport size |
| // to ensure the view position remains aligned on a tab boundary |
| Dimension extentSize = new Dimension(viewSize.width - tabViewPosition.x, |
| viewRect.height); |
| viewport.setExtentSize(extentSize); |
| } |
| break; |
| case LEFT: |
| case RIGHT: |
| tabViewPosition.y = leadingTabIndex == 0? 0 : rects[leadingTabIndex].y; |
| |
| if ((viewSize.height - tabViewPosition.y) < viewRect.height) { |
| // We've scrolled to the end, so adjust the viewport size |
| // to ensure the view position remains aligned on a tab boundary |
| Dimension extentSize = new Dimension(viewRect.width, |
| viewSize.height - tabViewPosition.y); |
| viewport.setExtentSize(extentSize); |
| } |
| } |
| viewport.setViewPosition(tabViewPosition); |
| } |
| |
| public void stateChanged(ChangeEvent e) { |
| updateView(); |
| } |
| |
| private void updateView() { |
| int tabPlacement = tabPane.getTabPlacement(); |
| int tabCount = tabPane.getTabCount(); |
| assureRectsCreated(tabCount); |
| Rectangle vpRect = viewport.getBounds(); |
| Dimension viewSize = viewport.getViewSize(); |
| Rectangle viewRect = viewport.getViewRect(); |
| |
| leadingTabIndex = getClosestTab(viewRect.x, viewRect.y); |
| |
| // If the tab isn't right aligned, adjust it. |
| if (leadingTabIndex + 1 < tabCount) { |
| switch (tabPlacement) { |
| case TOP: |
| case BOTTOM: |
| if (rects[leadingTabIndex].x < viewRect.x) { |
| leadingTabIndex++; |
| } |
| break; |
| case LEFT: |
| case RIGHT: |
| if (rects[leadingTabIndex].y < viewRect.y) { |
| leadingTabIndex++; |
| } |
| break; |
| } |
| } |
| Insets contentInsets = getContentBorderInsets(tabPlacement); |
| switch(tabPlacement) { |
| case LEFT: |
| tabPane.repaint(vpRect.x+vpRect.width, vpRect.y, |
| contentInsets.left, vpRect.height); |
| scrollBackwardButton.setEnabled( |
| viewRect.y > 0 && leadingTabIndex > 0); |
| scrollForwardButton.setEnabled( |
| leadingTabIndex < tabCount-1 && |
| viewSize.height-viewRect.y > viewRect.height); |
| break; |
| case RIGHT: |
| tabPane.repaint(vpRect.x-contentInsets.right, vpRect.y, |
| contentInsets.right, vpRect.height); |
| scrollBackwardButton.setEnabled( |
| viewRect.y > 0 && leadingTabIndex > 0); |
| scrollForwardButton.setEnabled( |
| leadingTabIndex < tabCount-1 && |
| viewSize.height-viewRect.y > viewRect.height); |
| break; |
| case BOTTOM: |
| tabPane.repaint(vpRect.x, vpRect.y-contentInsets.bottom, |
| vpRect.width, contentInsets.bottom); |
| scrollBackwardButton.setEnabled( |
| viewRect.x > 0 && leadingTabIndex > 0); |
| scrollForwardButton.setEnabled( |
| leadingTabIndex < tabCount-1 && |
| viewSize.width-viewRect.x > viewRect.width); |
| break; |
| case TOP: |
| default: |
| tabPane.repaint(vpRect.x, vpRect.y+vpRect.height, |
| vpRect.width, contentInsets.top); |
| scrollBackwardButton.setEnabled( |
| viewRect.x > 0 && leadingTabIndex > 0); |
| scrollForwardButton.setEnabled( |
| leadingTabIndex < tabCount-1 && |
| viewSize.width-viewRect.x > viewRect.width); |
| } |
| } |
| |
| /** |
| * ActionListener for the scroll buttons. |
| */ |
| public void actionPerformed(ActionEvent e) { |
| ActionMap map = tabPane.getActionMap(); |
| |
| if (map != null) { |
| String actionKey; |
| |
| if (e.getSource() == scrollForwardButton) { |
| actionKey = "scrollTabsForwardAction"; |
| } |
| else { |
| actionKey = "scrollTabsBackwardAction"; |
| } |
| Action action = map.get(actionKey); |
| |
| if (action != null && action.isEnabled()) { |
| action.actionPerformed(new ActionEvent(tabPane, |
| ActionEvent.ACTION_PERFORMED, null, e.getWhen(), |
| e.getModifiers())); |
| } |
| } |
| } |
| |
| public String toString() { |
| return "viewport.viewSize=" + viewport.getViewSize() + "\n" + |
| "viewport.viewRectangle="+viewport.getViewRect()+"\n"+ |
| "leadingTabIndex="+leadingTabIndex+"\n"+ |
| "tabViewPosition=" + tabViewPosition; |
| } |
| |
| } |
| |
| @SuppressWarnings("serial") // Superclass is not serializable across versions |
| private class ScrollableTabViewport extends JViewport implements UIResource { |
| public ScrollableTabViewport() { |
| super(); |
| setName("TabbedPane.scrollableViewport"); |
| setScrollMode(SIMPLE_SCROLL_MODE); |
| setOpaque(tabPane.isOpaque()); |
| Color bgColor = UIManager.getColor("TabbedPane.tabAreaBackground"); |
| if (bgColor == null) { |
| bgColor = tabPane.getBackground(); |
| } |
| setBackground(bgColor); |
| } |
| } |
| |
| @SuppressWarnings("serial") // Superclass is not serializable across versions |
| private class ScrollableTabPanel extends JPanel implements UIResource { |
| public ScrollableTabPanel() { |
| super(null); |
| setOpaque(tabPane.isOpaque()); |
| Color bgColor = UIManager.getColor("TabbedPane.tabAreaBackground"); |
| if (bgColor == null) { |
| bgColor = tabPane.getBackground(); |
| } |
| setBackground(bgColor); |
| } |
| public void paintComponent(Graphics g) { |
| super.paintComponent(g); |
| BasicTabbedPaneUI.this.paintTabArea(g, tabPane.getTabPlacement(), |
| tabPane.getSelectedIndex()); |
| if (tabScroller.croppedEdge.isParamsSet() && tabContainer == null) { |
| Rectangle croppedRect = rects[tabScroller.croppedEdge.getTabIndex()]; |
| g.translate(croppedRect.x, croppedRect.y); |
| tabScroller.croppedEdge.paintComponent(g); |
| g.translate(-croppedRect.x, -croppedRect.y); |
| } |
| } |
| |
| public void doLayout() { |
| if (getComponentCount() > 0) { |
| Component child = getComponent(0); |
| child.setBounds(0, 0, getWidth(), getHeight()); |
| } |
| } |
| } |
| |
| @SuppressWarnings("serial") // Superclass is not serializable across versions |
| private class ScrollableTabButton extends BasicArrowButton implements UIResource, |
| SwingConstants { |
| public ScrollableTabButton(int direction) { |
| super(direction, |
| UIManager.getColor("TabbedPane.selected"), |
| UIManager.getColor("TabbedPane.shadow"), |
| UIManager.getColor("TabbedPane.darkShadow"), |
| UIManager.getColor("TabbedPane.highlight")); |
| } |
| } |
| |
| |
| // Controller: event listeners |
| |
| private class Handler implements ChangeListener, ContainerListener, |
| FocusListener, MouseListener, MouseMotionListener, |
| PropertyChangeListener { |
| // |
| // PropertyChangeListener |
| // |
| public void propertyChange(PropertyChangeEvent e) { |
| JTabbedPane pane = (JTabbedPane)e.getSource(); |
| String name = e.getPropertyName(); |
| boolean isScrollLayout = scrollableTabLayoutEnabled(); |
| if (name == "mnemonicAt") { |
| updateMnemonics(); |
| pane.repaint(); |
| } |
| else if (name == "displayedMnemonicIndexAt") { |
| pane.repaint(); |
| } |
| else if (name =="indexForTitle") { |
| calculatedBaseline = false; |
| Integer index = (Integer) e.getNewValue(); |
| // remove the current index |
| // to let updateHtmlViews() insert the correct one |
| if (htmlViews != null) { |
| htmlViews.removeElementAt(index); |
| } |
| updateHtmlViews(index); |
| } else if (name == "tabLayoutPolicy") { |
| BasicTabbedPaneUI.this.uninstallUI(pane); |
| BasicTabbedPaneUI.this.installUI(pane); |
| calculatedBaseline = false; |
| } else if (name == "tabPlacement") { |
| if (scrollableTabLayoutEnabled()) { |
| tabScroller.createButtons(); |
| } |
| calculatedBaseline = false; |
| } else if (name == "opaque" && isScrollLayout) { |
| boolean newVal = ((Boolean)e.getNewValue()).booleanValue(); |
| tabScroller.tabPanel.setOpaque(newVal); |
| tabScroller.viewport.setOpaque(newVal); |
| } else if (name == "background" && isScrollLayout) { |
| Color newVal = (Color)e.getNewValue(); |
| tabScroller.tabPanel.setBackground(newVal); |
| tabScroller.viewport.setBackground(newVal); |
| Color newColor = selectedColor == null ? newVal : selectedColor; |
| tabScroller.scrollForwardButton.setBackground(newColor); |
| tabScroller.scrollBackwardButton.setBackground(newColor); |
| } else if (name == "indexForTabComponent") { |
| if (tabContainer != null) { |
| tabContainer.removeUnusedTabComponents(); |
| } |
| Component c = tabPane.getTabComponentAt( |
| (Integer)e.getNewValue()); |
| if (c != null) { |
| if (tabContainer == null) { |
| installTabContainer(); |
| } else { |
| tabContainer.add(c); |
| } |
| } |
| tabPane.revalidate(); |
| tabPane.repaint(); |
| calculatedBaseline = false; |
| } else if (name == "indexForNullComponent") { |
| isRunsDirty = true; |
| updateHtmlViews((Integer)e.getNewValue()); |
| } else if (name == "font") { |
| calculatedBaseline = false; |
| } |
| } |
| |
| private void updateHtmlViews(int index) { |
| String title = tabPane.getTitleAt(index); |
| boolean isHTML = BasicHTML.isHTMLString(title); |
| if (isHTML) { |
| if (htmlViews==null) { // Initialize vector |
| htmlViews = createHTMLVector(); |
| } else { // Vector already exists |
| View v = BasicHTML.createHTMLView(tabPane, title); |
| htmlViews.insertElementAt(v, index); |
| } |
| } else { // Not HTML |
| if (htmlViews!=null) { // Add placeholder |
| htmlViews.insertElementAt(null, index); |
| } // else nada! |
| } |
| updateMnemonics(); |
| } |
| |
| // |
| // ChangeListener |
| // |
| public void stateChanged(ChangeEvent e) { |
| JTabbedPane tabPane = (JTabbedPane)e.getSource(); |
| tabPane.revalidate(); |
| tabPane.repaint(); |
| |
| setFocusIndex(tabPane.getSelectedIndex(), false); |
| |
| if (scrollableTabLayoutEnabled()) { |
| int index = tabPane.getSelectedIndex(); |
| if (index < rects.length && index != -1) { |
| tabScroller.tabPanel.scrollRectToVisible( |
| (Rectangle)rects[index].clone()); |
| } |
| } |
| } |
| |
| // |
| // MouseListener |
| // |
| public void mouseClicked(MouseEvent e) { |
| } |
| |
| public void mouseReleased(MouseEvent e) { |
| } |
| |
| public void mouseEntered(MouseEvent e) { |
| setRolloverTab(e.getX(), e.getY()); |
| } |
| |
| public void mouseExited(MouseEvent e) { |
| setRolloverTab(-1); |
| } |
| |
| public void mousePressed(MouseEvent e) { |
| if (!tabPane.isEnabled()) { |
| return; |
| } |
| int tabIndex = tabForCoordinate(tabPane, e.getX(), e.getY()); |
| if (tabIndex >= 0 && tabPane.isEnabledAt(tabIndex)) { |
| if (tabIndex != tabPane.getSelectedIndex()) { |
| // Clicking on unselected tab, change selection, do NOT |
| // request focus. |
| // This will trigger the focusIndex to change by way |
| // of stateChanged. |
| tabPane.setSelectedIndex(tabIndex); |
| } |
| else if (tabPane.isRequestFocusEnabled()) { |
| // Clicking on selected tab, try and give the tabbedpane |
| // focus. Repaint will occur in focusGained. |
| tabPane.requestFocus(); |
| } |
| } |
| } |
| |
| // |
| // MouseMotionListener |
| // |
| public void mouseDragged(MouseEvent e) { |
| } |
| |
| public void mouseMoved(MouseEvent e) { |
| setRolloverTab(e.getX(), e.getY()); |
| } |
| |
| // |
| // FocusListener |
| // |
| public void focusGained(FocusEvent e) { |
| setFocusIndex(tabPane.getSelectedIndex(), true); |
| } |
| public void focusLost(FocusEvent e) { |
| repaintTab(focusIndex); |
| } |
| |
| |
| // |
| // ContainerListener |
| // |
| /* GES 2/3/99: |
| The container listener code was added to support HTML |
| rendering of tab titles. |
| |
| Ideally, we would be able to listen for property changes |
| when a tab is added or its text modified. At the moment |
| there are no such events because the Beans spec doesn't |
| allow 'indexed' property changes (i.e. tab 2's text changed |
| from A to B). |
| |
| In order to get around this, we listen for tabs to be added |
| or removed by listening for the container events. we then |
| queue up a runnable (so the component has a chance to complete |
| the add) which checks the tab title of the new component to see |
| if it requires HTML rendering. |
| |
| The Views (one per tab title requiring HTML rendering) are |
| stored in the htmlViews Vector, which is only allocated after |
| the first time we run into an HTML tab. Note that this vector |
| is kept in step with the number of pages, and nulls are added |
| for those pages whose tab title do not require HTML rendering. |
| |
| This makes it easy for the paint and layout code to tell |
| whether to invoke the HTML engine without having to check |
| the string during time-sensitive operations. |
| |
| When we have added a way to listen for tab additions and |
| changes to tab text, this code should be removed and |
| replaced by something which uses that. */ |
| |
| public void componentAdded(ContainerEvent e) { |
| JTabbedPane tp = (JTabbedPane)e.getContainer(); |
| Component child = e.getChild(); |
| if (child instanceof UIResource) { |
| return; |
| } |
| isRunsDirty = true; |
| updateHtmlViews(tp.indexOfComponent(child)); |
| } |
| public void componentRemoved(ContainerEvent e) { |
| JTabbedPane tp = (JTabbedPane)e.getContainer(); |
| Component child = e.getChild(); |
| if (child instanceof UIResource) { |
| return; |
| } |
| |
| // NOTE 4/15/2002 (joutwate): |
| // This fix is implemented using client properties since there is |
| // currently no IndexPropertyChangeEvent. Once |
| // IndexPropertyChangeEvents have been added this code should be |
| // modified to use it. |
| Integer indexObj = |
| (Integer)tp.getClientProperty("__index_to_remove__"); |
| if (indexObj != null) { |
| int index = indexObj.intValue(); |
| if (htmlViews != null && htmlViews.size() > index) { |
| htmlViews.removeElementAt(index); |
| } |
| tp.putClientProperty("__index_to_remove__", null); |
| } |
| isRunsDirty = true; |
| updateMnemonics(); |
| |
| validateFocusIndex(); |
| } |
| } |
| |
| /** |
| * This class should be treated as a "protected" inner class. |
| * Instantiate it only within subclasses of BasicTabbedPaneUI. |
| */ |
| public class PropertyChangeHandler implements PropertyChangeListener { |
| // NOTE: This class exists only for backward compatibility. All |
| // its functionality has been moved into Handler. If you need to add |
| // new functionality add it to the Handler, but make sure this |
| // class calls into the Handler. |
| public void propertyChange(PropertyChangeEvent e) { |
| getHandler().propertyChange(e); |
| } |
| } |
| |
| /** |
| * This class should be treated as a "protected" inner class. |
| * Instantiate it only within subclasses of BasicTabbedPaneUI. |
| */ |
| public class TabSelectionHandler implements ChangeListener { |
| // NOTE: This class exists only for backward compatibility. All |
| // its functionality has been moved into Handler. If you need to add |
| // new functionality add it to the Handler, but make sure this |
| // class calls into the Handler. |
| public void stateChanged(ChangeEvent e) { |
| getHandler().stateChanged(e); |
| } |
| } |
| |
| /** |
| * This class should be treated as a "protected" inner class. |
| * Instantiate it only within subclasses of BasicTabbedPaneUI. |
| */ |
| public class MouseHandler extends MouseAdapter { |
| // NOTE: This class exists only for backward compatibility. All |
| // its functionality has been moved into Handler. If you need to add |
| // new functionality add it to the Handler, but make sure this |
| // class calls into the Handler. |
| public void mousePressed(MouseEvent e) { |
| getHandler().mousePressed(e); |
| } |
| } |
| |
| /** |
| * This class should be treated as a "protected" inner class. |
| * Instantiate it only within subclasses of BasicTabbedPaneUI. |
| */ |
| public class FocusHandler extends FocusAdapter { |
| // NOTE: This class exists only for backward compatibility. All |
| // its functionality has been moved into Handler. If you need to add |
| // new functionality add it to the Handler, but make sure this |
| // class calls into the Handler. |
| public void focusGained(FocusEvent e) { |
| getHandler().focusGained(e); |
| } |
| public void focusLost(FocusEvent e) { |
| getHandler().focusLost(e); |
| } |
| } |
| |
| private Vector<View> createHTMLVector() { |
| Vector<View> htmlViews = new Vector<View>(); |
| int count = tabPane.getTabCount(); |
| if (count>0) { |
| for (int i=0 ; i<count; i++) { |
| String title = tabPane.getTitleAt(i); |
| if (BasicHTML.isHTMLString(title)) { |
| htmlViews.addElement(BasicHTML.createHTMLView(tabPane, title)); |
| } else { |
| htmlViews.addElement(null); |
| } |
| } |
| } |
| return htmlViews; |
| } |
| |
| @SuppressWarnings("serial") // Superclass is not serializable across versions |
| private class TabContainer extends JPanel implements UIResource { |
| private boolean notifyTabbedPane = true; |
| |
| public TabContainer() { |
| super(null); |
| setOpaque(false); |
| } |
| |
| public void remove(Component comp) { |
| int index = tabPane.indexOfTabComponent(comp); |
| super.remove(comp); |
| if (notifyTabbedPane && index != -1) { |
| tabPane.setTabComponentAt(index, null); |
| } |
| } |
| |
| private void removeUnusedTabComponents() { |
| for (Component c : getComponents()) { |
| if (!(c instanceof UIResource)) { |
| int index = tabPane.indexOfTabComponent(c); |
| if (index == -1) { |
| super.remove(c); |
| } |
| } |
| } |
| } |
| |
| public boolean isOptimizedDrawingEnabled() { |
| return tabScroller != null && !tabScroller.croppedEdge.isParamsSet(); |
| } |
| |
| public void doLayout() { |
| // We layout tabComponents in JTabbedPane's layout manager |
| // and use this method as a hook for repainting tabs |
| // to update tabs area e.g. when the size of tabComponent was changed |
| if (scrollableTabLayoutEnabled()) { |
| tabScroller.tabPanel.repaint(); |
| tabScroller.updateView(); |
| } else { |
| tabPane.repaint(getBounds()); |
| } |
| } |
| } |
| |
| @SuppressWarnings("serial") // Superclass is not serializable across versions |
| private class CroppedEdge extends JPanel implements UIResource { |
| private Shape shape; |
| private int tabIndex; |
| private int cropline; |
| private int cropx, cropy; |
| |
| public CroppedEdge() { |
| setOpaque(false); |
| } |
| |
| public void setParams(int tabIndex, int cropline, int cropx, int cropy) { |
| this.tabIndex = tabIndex; |
| this.cropline = cropline; |
| this.cropx = cropx; |
| this.cropy = cropy; |
| Rectangle tabRect = rects[tabIndex]; |
| setBounds(tabRect); |
| shape = createCroppedTabShape(tabPane.getTabPlacement(), tabRect, cropline); |
| if (getParent() == null && tabContainer != null) { |
| tabContainer.add(this, 0); |
| } |
| } |
| |
| public void resetParams() { |
| shape = null; |
| if (getParent() == tabContainer && tabContainer != null) { |
| tabContainer.remove(this); |
| } |
| } |
| |
| public boolean isParamsSet() { |
| return shape != null; |
| } |
| |
| public int getTabIndex() { |
| return tabIndex; |
| } |
| |
| public int getCropline() { |
| return cropline; |
| } |
| |
| public int getCroppedSideWidth() { |
| return 3; |
| } |
| |
| private Color getBgColor() { |
| Component parent = tabPane.getParent(); |
| if (parent != null) { |
| Color bg = parent.getBackground(); |
| if (bg != null) { |
| return bg; |
| } |
| } |
| return UIManager.getColor("control"); |
| } |
| |
| protected void paintComponent(Graphics g) { |
| super.paintComponent(g); |
| if (isParamsSet() && g instanceof Graphics2D) { |
| Graphics2D g2 = (Graphics2D) g; |
| g2.clipRect(0, 0, getWidth(), getHeight()); |
| g2.setColor(getBgColor()); |
| g2.translate(cropx, cropy); |
| g2.fill(shape); |
| paintCroppedTabEdge(g); |
| g2.translate(-cropx, -cropy); |
| } |
| } |
| } |
| } |