--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/javax/swing/plaf/basic/BasicProgressBarUI.java Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,1275 @@
+/*
+ * Copyright 1997-2006 Sun Microsystems, Inc. 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. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package javax.swing.plaf.basic;
+
+import sun.swing.SwingUtilities2;
+import java.awt.*;
+import java.awt.geom.AffineTransform;
+import java.awt.event.*;
+import javax.swing.*;
+import javax.swing.event.*;
+import javax.swing.plaf.*;
+import java.beans.PropertyChangeListener;
+import java.beans.PropertyChangeEvent;
+import java.io.Serializable;
+import sun.swing.DefaultLookup;
+
+/**
+ * A Basic L&F implementation of ProgressBarUI.
+ *
+ * @author Michael C. Albers
+ * @author Kathy Walrath
+ */
+public class BasicProgressBarUI extends ProgressBarUI {
+ private int cachedPercent;
+ private int cellLength, cellSpacing;
+ // The "selectionForeground" is the color of the text when it is painted
+ // over a filled area of the progress bar. The "selectionBackground"
+ // is for the text over the unfilled progress bar area.
+ private Color selectionForeground, selectionBackground;
+
+ private Animator animator;
+
+ protected JProgressBar progressBar;
+ protected ChangeListener changeListener;
+ private Handler handler;
+
+ /**
+ * The current state of the indeterminate animation's cycle.
+ * 0, the initial value, means paint the first frame.
+ * When the progress bar is indeterminate and showing,
+ * the default animation thread updates this variable
+ * by invoking incrementAnimationIndex()
+ * every repaintInterval milliseconds.
+ */
+ private int animationIndex = 0;
+
+ /**
+ * The number of frames per cycle. Under the default implementation,
+ * this depends on the cycleTime and repaintInterval. It
+ * must be an even number for the default painting algorithm. This
+ * value is set in the initIndeterminateValues method.
+ */
+ private int numFrames; //0 1|numFrames-1 ... numFrames/2
+
+ /**
+ * Interval (in ms) between repaints of the indeterminate progress bar.
+ * The value of this method is set
+ * (every time the progress bar changes to indeterminate mode)
+ * using the
+ * "ProgressBar.repaintInterval" key in the defaults table.
+ */
+ private int repaintInterval;
+
+ /**
+ * The number of milliseconds until the animation cycle repeats.
+ * The value of this method is set
+ * (every time the progress bar changes to indeterminate mode)
+ * using the
+ * "ProgressBar.cycleTime" key in the defaults table.
+ */
+ private int cycleTime; //must be repaintInterval*2*aPositiveInteger
+
+ //performance stuff
+ private static boolean ADJUSTTIMER = true; //makes a BIG difference;
+ //make this false for
+ //performance tests
+
+ /**
+ * Used to hold the location and size of the bouncing box (returned
+ * by getBox) to be painted.
+ *
+ * @since 1.5
+ */
+ protected Rectangle boxRect;
+
+ /**
+ * The rectangle to be updated the next time the
+ * animation thread calls repaint. For bouncing-box
+ * animation this rect should include the union of
+ * the currently displayed box (which needs to be erased)
+ * and the box to be displayed next.
+ * This rectangle's values are set in
+ * the setAnimationIndex method.
+ */
+ private Rectangle nextPaintRect;
+
+ //cache
+ /** The component's painting area, not including the border. */
+ private Rectangle componentInnards; //the current painting area
+ private Rectangle oldComponentInnards; //used to see if the size changed
+
+ /** For bouncing-box animation, the change in position per frame. */
+ private double delta = 0.0;
+
+ private int maxPosition = 0; //maximum X (horiz) or Y box location
+
+
+ public static ComponentUI createUI(JComponent x) {
+ return new BasicProgressBarUI();
+ }
+
+ public void installUI(JComponent c) {
+ progressBar = (JProgressBar)c;
+ installDefaults();
+ installListeners();
+ if (progressBar.isIndeterminate()) {
+ initIndeterminateValues();
+ }
+ }
+
+ public void uninstallUI(JComponent c) {
+ if (progressBar.isIndeterminate()) {
+ cleanUpIndeterminateValues();
+ }
+ uninstallDefaults();
+ uninstallListeners();
+ progressBar = null;
+ }
+
+ protected void installDefaults() {
+ LookAndFeel.installProperty(progressBar, "opaque", Boolean.TRUE);
+ LookAndFeel.installBorder(progressBar,"ProgressBar.border");
+ LookAndFeel.installColorsAndFont(progressBar,
+ "ProgressBar.background",
+ "ProgressBar.foreground",
+ "ProgressBar.font");
+ cellLength = UIManager.getInt("ProgressBar.cellLength");
+ cellSpacing = UIManager.getInt("ProgressBar.cellSpacing");
+ selectionForeground = UIManager.getColor("ProgressBar.selectionForeground");
+ selectionBackground = UIManager.getColor("ProgressBar.selectionBackground");
+ }
+
+ protected void uninstallDefaults() {
+ LookAndFeel.uninstallBorder(progressBar);
+ }
+
+ protected void installListeners() {
+ //Listen for changes in the progress bar's data.
+ changeListener = getHandler();
+ progressBar.addChangeListener(changeListener);
+
+ //Listen for changes between determinate and indeterminate state.
+ progressBar.addPropertyChangeListener(getHandler());
+ }
+
+ private Handler getHandler() {
+ if (handler == null) {
+ handler = new Handler();
+ }
+ return handler;
+ }
+
+ /**
+ * Starts the animation thread, creating and initializing
+ * it if necessary. This method is invoked when an
+ * indeterminate progress bar should start animating.
+ * Reasons for this may include:
+ * <ul>
+ * <li>The progress bar is determinate and becomes displayable
+ * <li>The progress bar is displayable and becomes determinate
+ * <li>The progress bar is displayable and determinate and this
+ * UI is installed
+ * </ul>
+ * If you implement your own animation thread,
+ * you must override this method.
+ *
+ * @since 1.4
+ * @see #stopAnimationTimer
+ */
+ protected void startAnimationTimer() {
+ if (animator == null) {
+ animator = new Animator();
+ }
+
+ animator.start(getRepaintInterval());
+ }
+
+ /**
+ * Stops the animation thread.
+ * This method is invoked when the indeterminate
+ * animation should be stopped. Reasons for this may include:
+ * <ul>
+ * <li>The progress bar changes to determinate
+ * <li>The progress bar is no longer part of a displayable hierarchy
+ * <li>This UI in uninstalled
+ * </ul>
+ * If you implement your own animation thread,
+ * you must override this method.
+ *
+ * @since 1.4
+ * @see #startAnimationTimer
+ */
+ protected void stopAnimationTimer() {
+ if (animator != null) {
+ animator.stop();
+ }
+ }
+
+ /**
+ * Removes all listeners installed by this object.
+ */
+ protected void uninstallListeners() {
+ progressBar.removeChangeListener(changeListener);
+ progressBar.removePropertyChangeListener(getHandler());
+ handler = 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);
+ if (progressBar.isStringPainted() &&
+ progressBar.getOrientation() == JProgressBar.HORIZONTAL) {
+ FontMetrics metrics = progressBar.
+ getFontMetrics(progressBar.getFont());
+ Insets insets = progressBar.getInsets();
+ int y = insets.top;
+ height = height - insets.top - insets.bottom;
+ return y + (height + metrics.getAscent() -
+ metrics.getLeading() -
+ metrics.getDescent()) / 2;
+ }
+ 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);
+ if (progressBar.isStringPainted() &&
+ progressBar.getOrientation() == JProgressBar.HORIZONTAL) {
+ return Component.BaselineResizeBehavior.CENTER_OFFSET;
+ }
+ return Component.BaselineResizeBehavior.OTHER;
+ }
+
+ // Many of the Basic*UI components have the following methods.
+ // This component does not have these methods because *ProgressBarUI
+ // is not a compound component and does not accept input.
+ //
+ // protected void installComponents()
+ // protected void uninstallComponents()
+ // protected void installKeyboardActions()
+ // protected void uninstallKeyboardActions()
+
+ protected Dimension getPreferredInnerHorizontal() {
+ Dimension horizDim = (Dimension)DefaultLookup.get(progressBar, this,
+ "ProgressBar.horizontalSize");
+ if (horizDim == null) {
+ horizDim = new Dimension(146, 12);
+ }
+ return horizDim;
+ }
+
+ protected Dimension getPreferredInnerVertical() {
+ Dimension vertDim = (Dimension)DefaultLookup.get(progressBar, this,
+ "ProgressBar.verticalSize");
+ if (vertDim == null) {
+ vertDim = new Dimension(12, 146);
+ }
+ return vertDim;
+ }
+
+ /**
+ * The "selectionForeground" is the color of the text when it is painted
+ * over a filled area of the progress bar.
+ */
+ protected Color getSelectionForeground() {
+ return selectionForeground;
+ }
+
+ /**
+ * The "selectionBackground" is the color of the text when it is painted
+ * over an unfilled area of the progress bar.
+ */
+ protected Color getSelectionBackground() {
+ return selectionBackground;
+ }
+
+ private int getCachedPercent() {
+ return cachedPercent;
+ }
+
+ private void setCachedPercent(int cachedPercent) {
+ this.cachedPercent = cachedPercent;
+ }
+
+ /**
+ * Returns the width (if HORIZONTAL) or height (if VERTICAL)
+ * of each of the indivdual cells/units to be rendered in the
+ * progress bar. However, for text rendering simplification and
+ * aesthetic considerations, this function will return 1 when
+ * the progress string is being rendered.
+ *
+ * @return the value representing the spacing between cells
+ * @see #setCellLength
+ * @see JProgressBar#isStringPainted
+ */
+ protected int getCellLength() {
+ if (progressBar.isStringPainted()) {
+ return 1;
+ } else {
+ return cellLength;
+ }
+ }
+
+ protected void setCellLength(int cellLen) {
+ this.cellLength = cellLen;
+ }
+
+ /**
+ * Returns the spacing between each of the cells/units in the
+ * progress bar. However, for text rendering simplification and
+ * aesthetic considerations, this function will return 0 when
+ * the progress string is being rendered.
+ *
+ * @return the value representing the spacing between cells
+ * @see #setCellSpacing
+ * @see JProgressBar#isStringPainted
+ */
+ protected int getCellSpacing() {
+ if (progressBar.isStringPainted()) {
+ return 0;
+ } else {
+ return cellSpacing;
+ }
+ }
+
+ protected void setCellSpacing(int cellSpace) {
+ this.cellSpacing = cellSpace;
+ }
+
+ /**
+ * This determines the amount of the progress bar that should be filled
+ * based on the percent done gathered from the model. This is a common
+ * operation so it was abstracted out. It assumes that your progress bar
+ * is linear. That is, if you are making a circular progress indicator,
+ * you will want to override this method.
+ */
+ protected int getAmountFull(Insets b, int width, int height) {
+ int amountFull = 0;
+ BoundedRangeModel model = progressBar.getModel();
+
+ if ( (model.getMaximum() - model.getMinimum()) != 0) {
+ if (progressBar.getOrientation() == JProgressBar.HORIZONTAL) {
+ amountFull = (int)Math.round(width *
+ progressBar.getPercentComplete());
+ } else {
+ amountFull = (int)Math.round(height *
+ progressBar.getPercentComplete());
+ }
+ }
+ return amountFull;
+ }
+
+ /**
+ * Delegates painting to one of two methods:
+ * paintDeterminate or paintIndeterminate.
+ */
+ public void paint(Graphics g, JComponent c) {
+ if (progressBar.isIndeterminate()) {
+ paintIndeterminate(g, c);
+ } else {
+ paintDeterminate(g, c);
+ }
+ }
+
+ /**
+ * Stores the position and size of
+ * the bouncing box that would be painted for the current animation index
+ * in <code>r</code> and returns <code>r</code>.
+ * Subclasses that add to the painting performed
+ * in this class's implementation of <code>paintIndeterminate</code> --
+ * to draw an outline around the bouncing box, for example --
+ * can use this method to get the location of the bouncing
+ * box that was just painted.
+ * By overriding this method,
+ * you have complete control over the size and position
+ * of the bouncing box,
+ * without having to reimplement <code>paintIndeterminate</code>.
+ *
+ * @param r the Rectangle instance to be modified;
+ * may be <code>null</code>
+ * @return <code>null</code> if no box should be drawn;
+ * otherwise, returns the passed-in rectangle
+ * (if non-null)
+ * or a new rectangle
+ *
+ * @see #setAnimationIndex
+ * @since 1.4
+ */
+ protected Rectangle getBox(Rectangle r) {
+ int currentFrame = getAnimationIndex();
+ int middleFrame = numFrames/2;
+
+ if (sizeChanged() || delta == 0.0 || maxPosition == 0.0) {
+ updateSizes();
+ }
+
+ r = getGenericBox(r);
+
+ if (r == null) {
+ return null;
+ }
+ if (middleFrame <= 0) {
+ return null;
+ }
+
+ //assert currentFrame >= 0 && currentFrame < numFrames
+ if (progressBar.getOrientation() == JProgressBar.HORIZONTAL) {
+ if (currentFrame < middleFrame) {
+ r.x = componentInnards.x
+ + (int)Math.round(delta * (double)currentFrame);
+ } else {
+ r.x = maxPosition
+ - (int)Math.round(delta *
+ (currentFrame - middleFrame));
+ }
+ } else { //VERTICAL indeterminate progress bar
+ if (currentFrame < middleFrame) {
+ r.y = componentInnards.y
+ + (int)Math.round(delta * currentFrame);
+ } else {
+ r.y = maxPosition
+ - (int)Math.round(delta *
+ (currentFrame - middleFrame));
+ }
+ }
+ return r;
+ }
+
+ /**
+ * Updates delta, max position.
+ * Assumes componentInnards is correct (e.g. call after sizeChanged()).
+ */
+ private void updateSizes() {
+ int length = 0;
+
+ if (progressBar.getOrientation() == JProgressBar.HORIZONTAL) {
+ length = getBoxLength(componentInnards.width,
+ componentInnards.height);
+ maxPosition = componentInnards.x + componentInnards.width
+ - length;
+
+ } else { //VERTICAL progress bar
+ length = getBoxLength(componentInnards.height,
+ componentInnards.width);
+ maxPosition = componentInnards.y + componentInnards.height
+ - length;
+ }
+
+ //If we're doing bouncing-box animation, update delta.
+ delta = 2.0 * (double)maxPosition/(double)numFrames;
+ }
+
+ /**
+ * Assumes that the component innards, max position, etc. are up-to-date.
+ */
+ private Rectangle getGenericBox(Rectangle r) {
+ if (r == null) {
+ r = new Rectangle();
+ }
+
+ if (progressBar.getOrientation() == JProgressBar.HORIZONTAL) {
+ r.width = getBoxLength(componentInnards.width,
+ componentInnards.height);
+ if (r.width < 0) {
+ r = null;
+ } else {
+ r.height = componentInnards.height;
+ r.y = componentInnards.y;
+ }
+ // end of HORIZONTAL
+
+ } else { //VERTICAL progress bar
+ r.height = getBoxLength(componentInnards.height,
+ componentInnards.width);
+ if (r.height < 0) {
+ r = null;
+ } else {
+ r.width = componentInnards.width;
+ r.x = componentInnards.x;
+ }
+ } // end of VERTICAL
+
+ return r;
+ }
+
+ /**
+ * Returns the length
+ * of the "bouncing box" to be painted.
+ * This method is invoked by the
+ * default implementation of <code>paintIndeterminate</code>
+ * to get the width (if the progress bar is horizontal)
+ * or height (if vertical) of the box.
+ * For example:
+ * <blockquote>
+ * <pre>
+ *boxRect.width = getBoxLength(componentInnards.width,
+ * componentInnards.height);
+ * </pre>
+ * </blockquote>
+ *
+ * @param availableLength the amount of space available
+ * for the bouncing box to move in;
+ * for a horizontal progress bar,
+ * for example,
+ * this should be
+ * the inside width of the progress bar
+ * (the component width minus borders)
+ * @param otherDimension for a horizontal progress bar, this should be
+ * the inside height of the progress bar; this
+ * value might be used to constrain or determine
+ * the return value
+ *
+ * @return the size of the box dimension being determined;
+ * must be no larger than <code>availableLength</code>
+ *
+ * @see javax.swing.SwingUtilities#calculateInnerArea
+ * @since 1.5
+ */
+ protected int getBoxLength(int availableLength, int otherDimension) {
+ return (int)Math.round(availableLength/6.0);
+ }
+
+ /**
+ * All purpose paint method that should do the right thing for all
+ * linear bouncing-box progress bars.
+ * Override this if you are making another kind of
+ * progress bar.
+ *
+ * @see #paintDeterminate
+ *
+ * @since 1.4
+ */
+ protected void paintIndeterminate(Graphics g, JComponent c) {
+ if (!(g instanceof Graphics2D)) {
+ return;
+ }
+
+ Insets b = progressBar.getInsets(); // area for border
+ int barRectWidth = progressBar.getWidth() - (b.right + b.left);
+ int barRectHeight = progressBar.getHeight() - (b.top + b.bottom);
+
+ if (barRectWidth <= 0 || barRectHeight <= 0) {
+ return;
+ }
+
+ Graphics2D g2 = (Graphics2D)g;
+
+ // Paint the bouncing box.
+ boxRect = getBox(boxRect);
+ if (boxRect != null) {
+ g2.setColor(progressBar.getForeground());
+ g2.fillRect(boxRect.x, boxRect.y,
+ boxRect.width, boxRect.height);
+ }
+
+ // Deal with possible text painting
+ if (progressBar.isStringPainted()) {
+ if (progressBar.getOrientation() == JProgressBar.HORIZONTAL) {
+ paintString(g2, b.left, b.top,
+ barRectWidth, barRectHeight,
+ boxRect.x, boxRect.width, b);
+ }
+ else {
+ paintString(g2, b.left, b.top,
+ barRectWidth, barRectHeight,
+ boxRect.y, boxRect.height, b);
+ }
+ }
+ }
+
+
+ /**
+ * All purpose paint method that should do the right thing for almost
+ * all linear, determinate progress bars. By setting a few values in
+ * the defaults
+ * table, things should work just fine to paint your progress bar.
+ * Naturally, override this if you are making a circular or
+ * semi-circular progress bar.
+ *
+ * @see #paintIndeterminate
+ *
+ * @since 1.4
+ */
+ protected void paintDeterminate(Graphics g, JComponent c) {
+ if (!(g instanceof Graphics2D)) {
+ return;
+ }
+
+ Insets b = progressBar.getInsets(); // area for border
+ int barRectWidth = progressBar.getWidth() - (b.right + b.left);
+ int barRectHeight = progressBar.getHeight() - (b.top + b.bottom);
+
+ if (barRectWidth <= 0 || barRectHeight <= 0) {
+ return;
+ }
+
+ int cellLength = getCellLength();
+ int cellSpacing = getCellSpacing();
+ // amount of progress to draw
+ int amountFull = getAmountFull(b, barRectWidth, barRectHeight);
+
+ Graphics2D g2 = (Graphics2D)g;
+ g2.setColor(progressBar.getForeground());
+
+ if (progressBar.getOrientation() == JProgressBar.HORIZONTAL) {
+ // draw the cells
+ if (cellSpacing == 0 && amountFull > 0) {
+ // draw one big Rect because there is no space between cells
+ g2.setStroke(new BasicStroke((float)barRectHeight,
+ BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL));
+ } else {
+ // draw each individual cell
+ g2.setStroke(new BasicStroke((float)barRectHeight,
+ BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL,
+ 0.f, new float[] { cellLength, cellSpacing }, 0.f));
+ }
+
+ if (BasicGraphicsUtils.isLeftToRight(c)) {
+ g2.drawLine(b.left, (barRectHeight/2) + b.top,
+ amountFull + b.left, (barRectHeight/2) + b.top);
+ } else {
+ g2.drawLine((barRectWidth + b.left),
+ (barRectHeight/2) + b.top,
+ barRectWidth + b.left - amountFull,
+ (barRectHeight/2) + b.top);
+ }
+
+ } else { // VERTICAL
+ // draw the cells
+ if (cellSpacing == 0 && amountFull > 0) {
+ // draw one big Rect because there is no space between cells
+ g2.setStroke(new BasicStroke((float)barRectWidth,
+ BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL));
+ } else {
+ // draw each individual cell
+ g2.setStroke(new BasicStroke((float)barRectWidth,
+ BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL,
+ 0f, new float[] { cellLength, cellSpacing }, 0f));
+ }
+
+ g2.drawLine(barRectWidth/2 + b.left,
+ b.top + barRectHeight,
+ barRectWidth/2 + b.left,
+ b.top + barRectHeight - amountFull);
+ }
+
+ // Deal with possible text painting
+ if (progressBar.isStringPainted()) {
+ paintString(g, b.left, b.top,
+ barRectWidth, barRectHeight,
+ amountFull, b);
+ }
+ }
+
+
+ protected void paintString(Graphics g, int x, int y,
+ int width, int height,
+ int amountFull, Insets b) {
+ if (progressBar.getOrientation() == JProgressBar.HORIZONTAL) {
+ if (BasicGraphicsUtils.isLeftToRight(progressBar)) {
+ if (progressBar.isIndeterminate()) {
+ boxRect = getBox(boxRect);
+ paintString(g, x, y, width, height,
+ boxRect.x, boxRect.width, b);
+ } else {
+ paintString(g, x, y, width, height, x, amountFull, b);
+ }
+ }
+ else {
+ paintString(g, x, y, width, height, x + width - amountFull,
+ amountFull, b);
+ }
+ }
+ else {
+ if (progressBar.isIndeterminate()) {
+ boxRect = getBox(boxRect);
+ paintString(g, x, y, width, height,
+ boxRect.y, boxRect.height, b);
+ } else {
+ paintString(g, x, y, width, height, y + height - amountFull,
+ amountFull, b);
+ }
+ }
+ }
+
+ /**
+ * Paints the progress string.
+ *
+ * @param g Graphics used for drawing.
+ * @param x x location of bounding box
+ * @param y y location of bounding box
+ * @param width width of bounding box
+ * @param height height of bounding box
+ * @param fillStart start location, in x or y depending on orientation,
+ * of the filled portion of the progress bar.
+ * @param amountFull size of the fill region, either width or height
+ * depending upon orientation.
+ * @param b Insets of the progress bar.
+ */
+ private void paintString(Graphics g, int x, int y, int width, int height,
+ int fillStart, int amountFull, Insets b) {
+ if (!(g instanceof Graphics2D)) {
+ return;
+ }
+
+ Graphics2D g2 = (Graphics2D)g;
+ String progressString = progressBar.getString();
+ g2.setFont(progressBar.getFont());
+ Point renderLocation = getStringPlacement(g2, progressString,
+ x, y, width, height);
+ Rectangle oldClip = g2.getClipBounds();
+
+ if (progressBar.getOrientation() == JProgressBar.HORIZONTAL) {
+ g2.setColor(getSelectionBackground());
+ SwingUtilities2.drawString(progressBar, g2, progressString,
+ renderLocation.x, renderLocation.y);
+ g2.setColor(getSelectionForeground());
+ g2.clipRect(fillStart, y, amountFull, height);
+ SwingUtilities2.drawString(progressBar, g2, progressString,
+ renderLocation.x, renderLocation.y);
+ } else { // VERTICAL
+ g2.setColor(getSelectionBackground());
+ AffineTransform rotate =
+ AffineTransform.getRotateInstance(Math.PI/2);
+ g2.setFont(progressBar.getFont().deriveFont(rotate));
+ renderLocation = getStringPlacement(g2, progressString,
+ x, y, width, height);
+ SwingUtilities2.drawString(progressBar, g2, progressString,
+ renderLocation.x, renderLocation.y);
+ g2.setColor(getSelectionForeground());
+ g2.clipRect(x, fillStart, width, amountFull);
+ SwingUtilities2.drawString(progressBar, g2, progressString,
+ renderLocation.x, renderLocation.y);
+ }
+ g2.setClip(oldClip);
+ }
+
+
+ /**
+ * Designate the place where the progress string will be painted.
+ * This implementation places it at the center of the progress
+ * bar (in both x and y). Override this if you want to right,
+ * left, top, or bottom align the progress string or if you need
+ * to nudge it around for any reason.
+ */
+ protected Point getStringPlacement(Graphics g, String progressString,
+ int x,int y,int width,int height) {
+ FontMetrics fontSizer = SwingUtilities2.getFontMetrics(progressBar, g,
+ progressBar.getFont());
+ int stringWidth = SwingUtilities2.stringWidth(progressBar, fontSizer,
+ progressString);
+
+ if (progressBar.getOrientation() == JProgressBar.HORIZONTAL) {
+ return new Point(x + Math.round(width/2 - stringWidth/2),
+ y + ((height +
+ fontSizer.getAscent() -
+ fontSizer.getLeading() -
+ fontSizer.getDescent()) / 2));
+ } else { // VERTICAL
+ return new Point(x + ((width - fontSizer.getAscent() +
+ fontSizer.getLeading() + fontSizer.getDescent()) / 2),
+ y + Math.round(height/2 - stringWidth/2));
+ }
+ }
+
+
+ public Dimension getPreferredSize(JComponent c) {
+ Dimension size;
+ Insets border = progressBar.getInsets();
+ FontMetrics fontSizer = progressBar.getFontMetrics(
+ progressBar.getFont());
+
+ if (progressBar.getOrientation() == JProgressBar.HORIZONTAL) {
+ size = new Dimension(getPreferredInnerHorizontal());
+ // Ensure that the progress string will fit
+ if (progressBar.isStringPainted()) {
+ // I'm doing this for completeness.
+ String progString = progressBar.getString();
+ int stringWidth = SwingUtilities2.stringWidth(
+ progressBar, fontSizer, progString);
+ if (stringWidth > size.width) {
+ size.width = stringWidth;
+ }
+ // This uses both Height and Descent to be sure that
+ // there is more than enough room in the progress bar
+ // for everything.
+ // This does have a strange dependency on
+ // getStringPlacememnt() in a funny way.
+ int stringHeight = fontSizer.getHeight() +
+ fontSizer.getDescent();
+ if (stringHeight > size.height) {
+ size.height = stringHeight;
+ }
+ }
+ } else {
+ size = new Dimension(getPreferredInnerVertical());
+ // Ensure that the progress string will fit.
+ if (progressBar.isStringPainted()) {
+ String progString = progressBar.getString();
+ int stringHeight = fontSizer.getHeight() +
+ fontSizer.getDescent();
+ if (stringHeight > size.width) {
+ size.width = stringHeight;
+ }
+ // This is also for completeness.
+ int stringWidth = SwingUtilities2.stringWidth(
+ progressBar, fontSizer, progString);
+ if (stringWidth > size.height) {
+ size.height = stringWidth;
+ }
+ }
+ }
+
+ size.width += border.left + border.right;
+ size.height += border.top + border.bottom;
+ return size;
+ }
+
+ /**
+ * The Minimum size for this component is 10. The rationale here
+ * is that there should be at least one pixel per 10 percent.
+ */
+ public Dimension getMinimumSize(JComponent c) {
+ Dimension pref = getPreferredSize(progressBar);
+ if (progressBar.getOrientation() == JProgressBar.HORIZONTAL) {
+ pref.width = 10;
+ } else {
+ pref.height = 10;
+ }
+ return pref;
+ }
+
+ public Dimension getMaximumSize(JComponent c) {
+ Dimension pref = getPreferredSize(progressBar);
+ if (progressBar.getOrientation() == JProgressBar.HORIZONTAL) {
+ pref.width = Short.MAX_VALUE;
+ } else {
+ pref.height = Short.MAX_VALUE;
+ }
+ return pref;
+ }
+
+ /**
+ * Gets the index of the current animation frame.
+ *
+ * @since 1.4
+ */
+ protected int getAnimationIndex() {
+ return animationIndex;
+ }
+
+ /**
+ * Returns the number of frames for the complete animation loop
+ * used by an indeterminate JProgessBar. The progress chunk will go
+ * from one end to the other and back during the entire loop. This
+ * visual behavior may be changed by subclasses in other Look and Feels.
+ *
+ * @return the number of frames
+ * @since 1.6
+ */
+ protected final int getFrameCount() {
+ return numFrames;
+ }
+
+ /**
+ * Sets the index of the current animation frame
+ * to the specified value and requests that the
+ * progress bar be repainted.
+ * Subclasses that don't use the default painting code
+ * might need to override this method
+ * to change the way that the <code>repaint</code> method
+ * is invoked.
+ *
+ * @param newValue the new animation index; no checking
+ * is performed on its value
+ * @see #incrementAnimationIndex
+ *
+ * @since 1.4
+ */
+ protected void setAnimationIndex(int newValue) {
+ if (animationIndex != newValue) {
+ if (sizeChanged()) {
+ animationIndex = newValue;
+ maxPosition = 0; //needs to be recalculated
+ delta = 0.0; //needs to be recalculated
+ progressBar.repaint();
+ return;
+ }
+
+ //Get the previous box drawn.
+ nextPaintRect = getBox(nextPaintRect);
+
+ //Update the frame number.
+ animationIndex = newValue;
+
+ //Get the next box to draw.
+ if (nextPaintRect != null) {
+ boxRect = getBox(boxRect);
+ if (boxRect != null) {
+ nextPaintRect.add(boxRect);
+ }
+ }
+ } else { //animationIndex == newValue
+ return;
+ }
+
+ if (nextPaintRect != null) {
+ progressBar.repaint(nextPaintRect);
+ } else {
+ progressBar.repaint();
+ }
+ }
+
+ private boolean sizeChanged() {
+ if ((oldComponentInnards == null) || (componentInnards == null)) {
+ return true;
+ }
+
+ oldComponentInnards.setRect(componentInnards);
+ componentInnards = SwingUtilities.calculateInnerArea(progressBar,
+ componentInnards);
+ return !oldComponentInnards.equals(componentInnards);
+ }
+
+ /**
+ * Sets the index of the current animation frame,
+ * to the next valid value,
+ * which results in the progress bar being repainted.
+ * The next valid value is, by default,
+ * the current animation index plus one.
+ * If the new value would be too large,
+ * this method sets the index to 0.
+ * Subclasses might need to override this method
+ * to ensure that the index does not go over
+ * the number of frames needed for the particular
+ * progress bar instance.
+ * This method is invoked by the default animation thread
+ * every <em>X</em> milliseconds,
+ * where <em>X</em> is specified by the "ProgressBar.repaintInterval"
+ * UI default.
+ *
+ * @see #setAnimationIndex
+ * @since 1.4
+ */
+ protected void incrementAnimationIndex() {
+ int newValue = getAnimationIndex() + 1;
+
+ if (newValue < numFrames) {
+ setAnimationIndex(newValue);
+ } else {
+ setAnimationIndex(0);
+ }
+ }
+
+ /**
+ * Returns the desired number of milliseconds between repaints.
+ * This value is meaningful
+ * only if the progress bar is in indeterminate mode.
+ * The repaint interval determines how often the
+ * default animation thread's timer is fired.
+ * It's also used by the default indeterminate progress bar
+ * painting code when determining
+ * how far to move the bouncing box per frame.
+ * The repaint interval is specified by
+ * the "ProgressBar.repaintInterval" UI default.
+ *
+ * @return the repaint interval, in milliseconds
+ */
+ private int getRepaintInterval() {
+ return repaintInterval;
+ }
+
+ private int initRepaintInterval() {
+ repaintInterval = DefaultLookup.getInt(progressBar,
+ this, "ProgressBar.repaintInterval", 50);
+ return repaintInterval;
+ }
+
+ /**
+ * Returns the number of milliseconds per animation cycle.
+ * This value is meaningful
+ * only if the progress bar is in indeterminate mode.
+ * The cycle time is used by the default indeterminate progress bar
+ * painting code when determining
+ * how far to move the bouncing box per frame.
+ * The cycle time is specified by
+ * the "ProgressBar.cycleTime" UI default
+ * and adjusted, if necessary,
+ * by the initIndeterminateDefaults method.
+ *
+ * @return the cycle time, in milliseconds
+ */
+ private int getCycleTime() {
+ return cycleTime;
+ }
+
+ private int initCycleTime() {
+ cycleTime = DefaultLookup.getInt(progressBar, this,
+ "ProgressBar.cycleTime", 3000);
+ return cycleTime;
+ }
+
+
+ /** Initialize cycleTime, repaintInterval, numFrames, animationIndex. */
+ private void initIndeterminateDefaults() {
+ initRepaintInterval(); //initialize repaint interval
+ initCycleTime(); //initialize cycle length
+
+ // Make sure repaintInterval is reasonable.
+ if (repaintInterval <= 0) {
+ repaintInterval = 100;
+ }
+
+ // Make sure cycleTime is reasonable.
+ if (repaintInterval > cycleTime) {
+ cycleTime = repaintInterval * 20;
+ } else {
+ // Force cycleTime to be a even multiple of repaintInterval.
+ int factor = (int)Math.ceil(
+ ((double)cycleTime)
+ / ((double)repaintInterval*2));
+ cycleTime = repaintInterval*factor*2;
+ }
+ }
+
+ /**
+ * Invoked by PropertyChangeHandler.
+ *
+ * NOTE: This might not be invoked until after the first
+ * paintIndeterminate call.
+ */
+ private void initIndeterminateValues() {
+ initIndeterminateDefaults();
+ //assert cycleTime/repaintInterval is a whole multiple of 2.
+ numFrames = cycleTime/repaintInterval;
+ initAnimationIndex();
+
+ boxRect = new Rectangle();
+ nextPaintRect = new Rectangle();
+ componentInnards = new Rectangle();
+ oldComponentInnards = new Rectangle();
+
+ // we only bother installing the HierarchyChangeListener if we
+ // are indeterminate
+ progressBar.addHierarchyListener(getHandler());
+
+ // start the animation thread if necessary
+ if (progressBar.isDisplayable()) {
+ startAnimationTimer();
+ }
+ }
+
+ /** Invoked by PropertyChangeHandler. */
+ private void cleanUpIndeterminateValues() {
+ // stop the animation thread if necessary
+ if (progressBar.isDisplayable()) {
+ stopAnimationTimer();
+ }
+
+ cycleTime = repaintInterval = 0;
+ numFrames = animationIndex = 0;
+ maxPosition = 0;
+ delta = 0.0;
+
+ boxRect = nextPaintRect = null;
+ componentInnards = oldComponentInnards = null;
+
+ progressBar.removeHierarchyListener(getHandler());
+ }
+
+ // Called from initIndeterminateValues to initialize the animation index.
+ // This assumes that numFrames is set to a correct value.
+ private void initAnimationIndex() {
+ if ((progressBar.getOrientation() == JProgressBar.HORIZONTAL) &&
+ (BasicGraphicsUtils.isLeftToRight(progressBar))) {
+ // If this is a left-to-right progress bar,
+ // start at the first frame.
+ setAnimationIndex(0);
+ } else {
+ // If we go right-to-left or vertically, start at the right/bottom.
+ setAnimationIndex(numFrames/2);
+ }
+ }
+
+ //
+ // Animation Thread
+ //
+ /**
+ * Implements an animation thread that invokes repaint
+ * at a fixed rate. If ADJUSTTIMER is true, this thread
+ * will continuously adjust the repaint interval to
+ * try to make the actual time between repaints match
+ * the requested rate.
+ */
+ private class Animator implements ActionListener {
+ private Timer timer;
+ private long previousDelay; //used to tune the repaint interval
+ private int interval; //the fixed repaint interval
+ private long lastCall; //the last time actionPerformed was called
+ private int MINIMUM_DELAY = 5;
+
+ /**
+ * Creates a timer if one doesn't already exist,
+ * then starts the timer thread.
+ */
+ private void start(int interval) {
+ previousDelay = interval;
+ lastCall = 0;
+
+ if (timer == null) {
+ timer = new Timer(interval, this);
+ } else {
+ timer.setDelay(interval);
+ }
+
+ if (ADJUSTTIMER) {
+ timer.setRepeats(false);
+ timer.setCoalesce(false);
+ }
+
+ timer.start();
+ }
+
+ /**
+ * Stops the timer thread.
+ */
+ private void stop() {
+ timer.stop();
+ }
+
+ /**
+ * Reacts to the timer's action events.
+ */
+ public void actionPerformed(ActionEvent e) {
+ if (ADJUSTTIMER) {
+ long time = System.currentTimeMillis();
+
+ if (lastCall > 0) { //adjust nextDelay
+ //XXX maybe should cache this after a while
+ //actual = time - lastCall
+ //difference = actual - interval
+ //nextDelay = previousDelay - difference
+ // = previousDelay - (time - lastCall - interval)
+ int nextDelay = (int)(previousDelay
+ - time + lastCall
+ + getRepaintInterval());
+ if (nextDelay < MINIMUM_DELAY) {
+ nextDelay = MINIMUM_DELAY;
+ }
+ timer.setInitialDelay(nextDelay);
+ previousDelay = nextDelay;
+ }
+ timer.start();
+ lastCall = time;
+ }
+
+ incrementAnimationIndex(); //paint next frame
+ }
+ }
+
+
+ /**
+ * This inner class is marked "public" due to a compiler bug.
+ * This class should be treated as a "protected" inner class.
+ * Instantiate it only within subclasses of BasicProgressBarUI.
+ */
+ public class ChangeHandler implements ChangeListener {
+ // NOTE: This class exists only for backward compatability. 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);
+ }
+ }
+
+
+ private class Handler implements ChangeListener, PropertyChangeListener, HierarchyListener {
+ // ChangeListener
+ public void stateChanged(ChangeEvent e) {
+ BoundedRangeModel model = progressBar.getModel();
+ int newRange = model.getMaximum() - model.getMinimum();
+ int newPercent;
+ int oldPercent = getCachedPercent();
+
+ if (newRange > 0) {
+ newPercent = (int)((100 * (long)model.getValue()) / newRange);
+ } else {
+ newPercent = 0;
+ }
+
+ if (newPercent != oldPercent) {
+ setCachedPercent(newPercent);
+ progressBar.repaint();
+ }
+ }
+
+ // PropertyChangeListener
+ public void propertyChange(PropertyChangeEvent e) {
+ String prop = e.getPropertyName();
+ if ("indeterminate" == prop) {
+ if (progressBar.isIndeterminate()) {
+ initIndeterminateValues();
+ } else {
+ //clean up
+ cleanUpIndeterminateValues();
+ }
+ progressBar.repaint();
+ }
+ }
+
+ // we don't want the animation to keep running if we're not displayable
+ public void hierarchyChanged(HierarchyEvent he) {
+ if ((he.getChangeFlags() & HierarchyEvent.DISPLAYABILITY_CHANGED) != 0) {
+ if (progressBar.isIndeterminate()) {
+ if (progressBar.isDisplayable()) {
+ startAnimationTimer();
+ } else {
+ stopAnimationTimer();
+ }
+ }
+ }
+ }
+ }
+}