processing/app/src/processing/app/EditorConsole.java at master · botbit/processing · GitHub

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/* -*- mode: java; c-basic-offset: 2; indent-tabs-mode: nil -*- */

Part of the Processing project - http://processing.org

This program is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2 of the License, or

(at your option) any later version.

This program 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 for more details.

You should have received a copy of the GNU General Public License

along with this program; if not, write to the Free Software Foundation,

Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

package processing.app;

import java.awt.*;

import java.awt.event.*;

import java.io.*;

import javax.swing.*;

import javax.swing.text.*;

import processing.core.PApplet;

import java.text.SimpleDateFormat;

import java.util.*;

/**

* Message console that sits below the editing area.

* <p />

* Be careful when debugging this class, because if it's throwing exceptions,

* don't take over System.err, and debug while watching just System.out

* or just call println() or whatever directly to systemOut or systemErr.

* <p />

* Also note that encodings will not work properly when run from Eclipse. This

* means that if you use non-ASCII characters in a println() or some such,

* the characters won't print properly in the Processing and/or Eclipse console.

* It seems that Eclipse's console-grabbing and that of Processing don't

* get along with one another. Use 'ant run' to work on encoding-related issues.

public class EditorConsole extends JScrollPane {

Editor editor;

JTextPane consoleTextPane;

BufferedStyledDocument consoleDoc;

MutableAttributeSet stdStyle;

MutableAttributeSet errStyle;

int maxLineCount;

PrintStream sketchOut;

PrintStream sketchErr;

// Single static instance shared because there's only one real System.out.

// Within the input handlers, the currentConsole variable will be used to

// echo things to the correct location.

static PrintStream systemOut;

static PrintStream systemErr;

static PrintStream consoleOut;

static PrintStream consoleErr;

static OutputStream stdoutFile;

static OutputStream stderrFile;

static EditorConsole currentConsole;

// For 0185, moved the first init to this static { } block, so that we never

// have a situation that causes systemOut/Err to not be set properly.

static {

systemOut = System.out;

systemErr = System.err;

// placing everything inside a try block because this can be a dangerous

// time for the lights to blink out and crash for and obscure reason.

try {

// Create output files that will have a randomized name. Has to

// be randomized otherwise another instance of Processing (or one of its

// sister IDEs) might collide with the file causing permissions problems.

// The files and folders are not deleted on exit because they may be

// needed for debugging or bug reporting.

SimpleDateFormat formatter = new SimpleDateFormat("yyMMdd");

String randy = PApplet.nf((int) (1000 * Math.random()), 4);

String stamp = formatter.format(new Date()) + "_" + randy;

File consoleDir = Base.getSettingsFile("console");

consoleDir.mkdirs();

File outFile = new File(consoleDir, stamp + ".out");

stdoutFile = new FileOutputStream(outFile);

File errFile = new File(consoleDir, stamp + ".err");

stderrFile = new FileOutputStream(errFile);

consoleOut = new PrintStream(new EditorConsoleStream(false, null));

consoleErr = new PrintStream(new EditorConsoleStream(true, null));

System.setOut(consoleOut);

System.setErr(consoleErr);

// } catch (Exception e) {

// stdoutFile = null;

// stderrFile = null;

// e.printStackTrace();

// Base.showWarning("Console Error",

// "A problem occurred while trying to open the\n" +

// "files used to store the console output.", e);

} catch (Exception e) {

stdoutFile = null;

stderrFile = null;

consoleOut = null;

consoleErr = null;

System.setOut(systemOut);

System.setErr(systemErr);

e.printStackTrace(systemErr);

}

public EditorConsole(Editor editor) {

this.editor = editor;

maxLineCount = Preferences.getInteger("console.length");

consoleDoc = new BufferedStyledDocument(10000, maxLineCount);

consoleTextPane = new JTextPane(consoleDoc);

consoleTextPane.setEditable(false);

updateMode();

// add the jtextpane to this scrollpane

this.setViewportView(consoleTextPane);

// to fix ugliness.. normally macosx java 1.3 puts an

// ugly white border around this object, so turn it off.

if (Base.isMacOS()) {

setBorder(null);

}

sketchOut = new PrintStream(new EditorConsoleStream(false, this));

sketchErr = new PrintStream(new EditorConsoleStream(true, this));

// periodically post buffered messages to the console

// should the interval come from the preferences file?

new javax.swing.Timer(250, new ActionListener() {

public void actionPerformed(ActionEvent evt) {

// only if new text has been added

if (consoleDoc.hasAppendage) {

// insert the text that's been added in the meantime

consoleDoc.insertAll();

// always move to the end of the text as it's added

consoleTextPane.setCaretPosition(consoleDoc.getLength());

}

}).start();

}

public PrintStream getOut() {

return sketchOut;

}

public PrintStream getErr() {

return sketchErr;

}

/**

* Update the font family and sizes based on the Preferences window.

protected void updateAppearance() {

String fontFamily = Preferences.get("editor.font.family");

int fontSize = Preferences.getInteger("console.font.size");

StyleConstants.setFontFamily(stdStyle, fontFamily);

StyleConstants.setFontSize(stdStyle, fontSize);

StyleConstants.setFontFamily(errStyle, fontFamily);

StyleConstants.setFontSize(errStyle, fontSize);

clear(); // otherwise we'll have mixed fonts

}

/**

* Change coloring, fonts, etc in response to a mode change.

protected void updateMode() {

Mode mode = editor.getMode();

// necessary?

MutableAttributeSet standard = new SimpleAttributeSet();

StyleConstants.setAlignment(standard, StyleConstants.ALIGN_LEFT);

consoleDoc.setParagraphAttributes(0, 0, standard, true);

Font font = Preferences.getFont("console.font");

// build styles for different types of console output

Color bgColor = mode.getColor("console.color");

Color fgColorOut = mode.getColor("console.output.color");

Color fgColorErr = mode.getColor("console.error.color");

stdStyle = new SimpleAttributeSet();

StyleConstants.setForeground(stdStyle, fgColorOut);

StyleConstants.setBackground(stdStyle, bgColor);

StyleConstants.setFontSize(stdStyle, font.getSize());

StyleConstants.setFontFamily(stdStyle, font.getFamily());

StyleConstants.setBold(stdStyle, font.isBold());

StyleConstants.setItalic(stdStyle, font.isItalic());

errStyle = new SimpleAttributeSet();

StyleConstants.setForeground(errStyle, fgColorErr);

StyleConstants.setBackground(errStyle, bgColor);

StyleConstants.setFontSize(errStyle, font.getSize());

StyleConstants.setFontFamily(errStyle, font.getFamily());

StyleConstants.setBold(errStyle, font.isBold());

StyleConstants.setItalic(errStyle, font.isItalic());

if (UIManager.getLookAndFeel().getID().equals("Nimbus")) {

getViewport().setBackground(bgColor);

consoleTextPane.setOpaque(false);

consoleTextPane.setBackground(new Color(0, 0, 0, 0));

} else {

consoleTextPane.setBackground(bgColor);

}

// calculate height of a line of text in pixels

// and size window accordingly

FontMetrics metrics = this.getFontMetrics(font);

int height = metrics.getAscent() + metrics.getDescent();

int lines = Preferences.getInteger("console.lines"); //, 4);

int sizeFudge = 6; //10; // unclear why this is necessary, but it is

setPreferredSize(new Dimension(1024, (height * lines) + sizeFudge));

setMinimumSize(new Dimension(1024, (height * 4) + sizeFudge));

}

static public void setEditor(Editor editor) {

currentConsole = editor.console;

}

/**

* Close the streams so that the temporary files can be deleted.

* <p/>

* File.deleteOnExit() cannot be used because the stdout and stderr

* files are inside a folder, and have to be deleted before the

* folder itself is deleted, which can't be guaranteed when using

* the deleteOnExit() method.

public static void handleQuit() {

// replace original streams to remove references to console's streams

System.setOut(systemOut);

System.setErr(systemErr);

try {

// close the PrintStream

if (consoleOut != null) consoleOut.close();

if (consoleErr != null) consoleErr.close();

// also have to close the original FileOutputStream

// otherwise it won't be shut down completely

if (stdoutFile != null) stdoutFile.close();

if (stderrFile != null) stderrFile.close();

} catch (IOException e) {

e.printStackTrace(systemErr);

}

synchronized public void message(String what, boolean err) {

if (err) {

systemErr.print(what);

} else {

systemOut.print(what);

}

if (err && (what.contains("invalid context 0x0") || (what.contains("invalid drawable")))) {

// Respectfully declining... This is a quirk of more recent releases of

// Java on Mac OS X, but is widely reported as the source of any other

// bug or problem that a user runs into. It may well be a Processing

// bug, but until we know, we're suppressing the messages.

} else if (err && what.contains("Make pbuffer:")) {

// Remove initalization warning from LWJGL.

} else if (err && what.contains("XInitThreads() called for concurrent")) {

// "Info: XInitThreads() called for concurrent Thread support" message on Linux

} else if (!err && what.contains("Listening for transport dt_socket at address")) {

// Message from the JVM about the socket launch for debug

// Listening for transport dt_socket at address: 8727

} else {

// Append a piece of text to the console. Swing components are NOT

// thread-safe, and since the MessageSiphon instantiates new threads,

// and in those callbacks, they often print output to stdout and stderr,

// which are wrapped by EditorConsoleStream and eventually leads to

// EditorConsole.appendText(), which directly updates the Swing text

// components, causing deadlock. Updates are buffered to the console and

// displayed at regular intervals on Swing's event-dispatching thread.

// (patch by David Mellis)

consoleDoc.appendString(what, err ? errStyle : stdStyle);

}

public void clear() {

try {

consoleDoc.remove(0, consoleDoc.getLength());

} catch (BadLocationException e) {

// ignore the error otherwise this will cause an infinite loop

// maybe not a good idea in the long run?

}

// . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

private static class EditorConsoleStream extends OutputStream {

final boolean err; // whether stderr or stdout

final byte single[] = new byte[1];

EditorConsole console;

public EditorConsoleStream(boolean err, EditorConsole console) {

this.err = err;

this.console = console;

}

public void close() { }

public void flush() { }

public void write(byte b[]) { // appears never to be used

write(b, 0, b.length);

}

public void write(byte b[], int offset, int length) {

if (console != null) {

console.message(new String(b, offset, length), err);

} else if (currentConsole != null) {

currentConsole.message(new String(b, offset, length), err);

} else {

// If no console is present, still need to write this to the actual

// System.out or System.err. Otherwise we can't !#$!% debug anything.

if (err) {

systemErr.write(b, offset, length);

} else {

systemOut.write(b, offset, length);

}

final OutputStream echo = err ? stderrFile : stdoutFile;

if (echo != null) {

try {

echo.write(b, offset, length);

echo.flush();

} catch (IOException e) {

e.printStackTrace();

}

public void write(int b) {

single[0] = (byte) b;

write(single, 0, 1);

}

// . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

/**

* Buffer updates to the console and output them in batches. For info, see:

* http://java.sun.com/products/jfc/tsc/articles/text/element_buffer and

* http://javatechniques.com/public/java/docs/gui/jtextpane-speed-part2.html

* appendString() is called from multiple threads, and insertAll from the

* swing event thread, so they need to be synchronized

class BufferedStyledDocument extends DefaultStyledDocument {

ArrayList<ElementSpec> elements = new ArrayList<ElementSpec>();

int maxLineLength, maxLineCount;

int currentLineLength = 0;

boolean needLineBreak = false;

boolean hasAppendage = false;

public BufferedStyledDocument(int maxLineLength, int maxLineCount) {

this.maxLineLength = maxLineLength;

this.maxLineCount = maxLineCount;

}

/** buffer a string for insertion at the end of the DefaultStyledDocument */

public synchronized void appendString(String str, AttributeSet a) {

// do this so that it's only updated when needed (otherwise console

// updates every 250 ms when an app isn't even running.. see bug 180)

hasAppendage = true;

// process each line of the string

while (str.length() > 0) {

// newlines within an element have (almost) no effect, so we need to

// replace them with proper paragraph breaks (start and end tags)

if (needLineBreak || currentLineLength > maxLineLength) {

elements.add(new ElementSpec(a, ElementSpec.EndTagType));

elements.add(new ElementSpec(a, ElementSpec.StartTagType));

currentLineLength = 0;

}

if (str.indexOf('\n') == -1) {

elements.add(new ElementSpec(a, ElementSpec.ContentType,

str.toCharArray(), 0, str.length()));

currentLineLength += str.length();

needLineBreak = false;

str = str.substring(str.length()); // eat the string

} else {

elements.add(new ElementSpec(a, ElementSpec.ContentType,

str.toCharArray(), 0, str.indexOf('\n') + 1));

needLineBreak = true;

str = str.substring(str.indexOf('\n') + 1); // eat the line

}

/** insert the buffered strings */

public synchronized void insertAll() {

ElementSpec[] elementArray = new ElementSpec[elements.size()];

elements.toArray(elementArray);

try {

// check how many lines have been used so far

// if too many, shave off a few lines from the beginning

Element element = super.getDefaultRootElement();

int lineCount = element.getElementCount();

int overage = lineCount - maxLineCount;

if (overage > 0) {

// if 1200 lines, and 1000 lines is max,

// find the position of the end of the 200th line

//systemOut.println("overage is " + overage);

Element lineElement = element.getElement(overage);

if (lineElement == null) return; // do nuthin

int endOffset = lineElement.getEndOffset();

// remove to the end of the 200th line

super.remove(0, endOffset);

}

super.insert(super.getLength(), elementArray);

} catch (BadLocationException e) {

// ignore the error otherwise this will cause an infinite loop

// maybe not a good idea in the long run?

}

elements.clear();

hasAppendage = false;

}

processing/app/src/processing/app/EditorConsole.java at master · botbit/processing · GitHub

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