TextAreaPainter.java
| Index Score | ||
|---|---|---|
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org.gjt.sp.jedit.textarea |
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Jext |
View: Reasons, Metrics, Source Code
These are the metrics that contribute to the Enerjy Score for this file, ranked by impact. So the metrics listed at the top influence the score to a greater extent that the metrics listed at the bottom.
| Metric | Description | |
|---|---|---|
| JAVA0034 | JAVA0034 Missing braces in if statement |  |
| DECL_COMMENTS | Comments in declarations | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| COMPARISONS | Number of comparison operators | |
| PARAMS | Number of formal parameter declarations | |
| FUNCTIONS | Number of function declarations | |
| EXITS | Procedure exits | |
| CYCLOMATIC | Cyclomatic complexity | |
| LOGICAL_LINES | Number of statements | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| SIZE | Size of the file in bytes | |
| OPERANDS | Number of operands | |
| UNIQUE_OPERANDS | Number of unique operands | |
| LINES | Number of lines in the source file | |
| PROGRAM_LENGTH | Halstead program length | |
| LINE_COMMENT | Number of line comments | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| LOC | Lines of code | |
| OPERATORS | Number of operators | |
| ELOC | Effective lines of code | |
| RETURNS | Number of return points from functions | |
| BLOCKS | Number of blocks | |
| COMMENTS | Comment lines | |
| DOC_COMMENT | Number of javadoc comment lines | |
| JAVA0177 | JAVA0177 Variable declaration missing initializer | |
| WHITESPACE | Number of whitespace lines | |
| UNIQUE_OPERATORS | Number of unique operators | |
| EXEC_COMMENTS | Comments in executable code | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0035 | JAVA0035 Missing braces in for statement | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0265 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0173 | JAVA0173 Unused method parameter | |
| JAVA0029 | JAVA0029 Private method not used | |
| JAVA0007 | JAVA0007 Should not declare public field | |
| JAVA0100 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0267 | JAVA0267 Use of System.err | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
/*
* TextAreaPainter.java - Paints the text area
* Copyright (C) 1999 Slava Pestov
* Portions Copyright (C)2000-2001 Romain Guy
*
* 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 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 org.gjt.sp.jedit.textarea;
import javax.swing.ToolTipManager;
import javax.swing.text.*;
import javax.swing.JComponent;
import java.awt.event.MouseEvent;
import java.awt.*;
import org.gjt.sp.jedit.syntax.*;
/**
* The text area repaint manager. It performs double buffering and paints
* lines of text.
* @author Slava Pestov
* @version $Id: TextAreaPainter.java,v 1.1.1.1 2004/10/19 16:16:24 gfx Exp $
*/
public class TextAreaPainter extends JComponent implements TabExpander
{
public static RenderingHints ANTI_ALIASED_RENDERING = null;
public static RenderingHints DEFAULT_RENDERING = null;
private static void initRenderings()
{
if (ANTI_ALIASED_RENDERING == null)
{
//ANTI_ALIASED_RENDERING = new RenderingHints(RenderingHints.KEY_ANTIALIASING,
// RenderingHints.VALUE_ANTIALIAS_ON);
ANTI_ALIASED_RENDERING = new RenderingHints(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
//ANTI_ALIASED_RENDERING.put(RenderingHints.KEY_FRACTIONALMETRICS,
// RenderingHints.VALUE_FRACTIONALMETRICS_ON);
//ANTI_ALIASED_RENDERING.put(RenderingHints.KEY_RENDERING,
// RenderingHints.VALUE_RENDER_QUALITY);
}
if (DEFAULT_RENDERING == null)
{
DEFAULT_RENDERING = new RenderingHints(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_OFF);
}
}
/**
* Creates a new repaint manager. This should be not be called
* directly.
*/
public TextAreaPainter(JEditTextArea textArea, TextAreaDefaults defaults)
{
initRenderings();
this.textArea = textArea;
setAutoscrolls(true);
setDoubleBuffered(true);
setOpaque(true);
ToolTipManager.sharedInstance().registerComponent(this);
setCursor(Cursor.getPredefinedCursor(Cursor.TEXT_CURSOR));
setFont(new Font("Monospaced",Font.PLAIN, 12));
setForeground(Color.black);
setBackground(Color.white);
blockCaret = defaults.blockCaret;
styles = defaults.styles;
cols = defaults.cols;
rows = defaults.rows;
caretColor = defaults.caretColor;
selectionColor = defaults.selectionColor;
lineHighlightColor = defaults.lineHighlightColor;
lineHighlight = defaults.lineHighlight;
bracketHighlightColor = defaults.bracketHighlightColor;
bracketHighlight = defaults.bracketHighlight;
paintInvalid = defaults.paintInvalid;
eolMarkerColor = defaults.eolMarkerColor;
eolMarkers = defaults.eolMarkers;
wrapGuide = defaults.wrapGuide;
wrapGuideColor = defaults.wrapGuideColor;
wrapGuideOffset = defaults.wrapGuideOffset;
linesIntervalHighlight = defaults.linesIntervalHighlight;
linesIntervalColor = defaults.linesIntervalColor;
linesInterval = defaults.linesInterval;
}
///////////////////////////////////////////////////////////////////////////////
// ANTI ALIASING
///////////////////////////////////////////////////////////////////////////////
private boolean antiAliasing = false;
private boolean wasAntiAliasing = false;
public boolean isAntiAliasingEnabled()
{
return antiAliasing;
}
public void setAntiAliasingEnabled(boolean on)
{
///// TEMP FIX /////
wasAntiAliasing = antiAliasing;
//antiAliasing = on;
antiAliasing = false;
}
private void setAntiAliasing(Graphics g)
{
if (antiAliasing)
((Graphics2D) g).setRenderingHints(ANTI_ALIASED_RENDERING);
else if (wasAntiAliasing != antiAliasing)
((Graphics2D) g).setRenderingHints(DEFAULT_RENDERING);
}
///////////////////////////////////////////////////////////////////////////////
// WRAP GUIDE
///////////////////////////////////////////////////////////////////////////////
private boolean wrapGuide;
private Color wrapGuideColor;
private int wrapGuideOffset;
public void setWrapGuideEnabled(boolean enabled)
{
wrapGuide = enabled;
}
public void setWrapGuideOffset(int offset)
{
wrapGuideOffset = offset;
}
public void setWrapGuideColor(Color color)
{
wrapGuideColor = color;
}
///////////////////////////////////////////////////////////////////////////////
// INTERVAL HIGHLIGHTING
///////////////////////////////////////////////////////////////////////////////
private boolean linesIntervalHighlight;
private Color linesIntervalColor;
private int linesInterval;
public void setLinesIntervalHighlightEnabled(boolean enabled)
{
linesIntervalHighlight = enabled;
}
public void setLinesInterval(int offset)
{
linesInterval = offset;
}
public void setLinesIntervalHighlightColor(Color color)
{
linesIntervalColor = color;
}
/**
* Returns if this component can be traversed by pressing the
* Tab key. This returns false.
*/
public final boolean isManagingFocus()
{
return false;
}
/**
* Returns the syntax styles used to paint colorized text. Entry <i>n</i>
* will be used to paint tokens with id = <i>n</i>.
* @see org.gjt.sp.jedit.syntax.Token
*/
public final SyntaxStyle[] getStyles()
{
return styles;
}
/**
* Sets the syntax styles used to paint colorized text. Entry <i>n</i>
* will be used to paint tokens with id = <i>n</i>.
* @param styles The syntax styles
* @see org.gjt.sp.jedit.syntax.Token
*/
public final void setStyles(SyntaxStyle[] styles)
{
this.styles = styles;
repaint();
}
/**
* Returns the caret color.
*/
public final Color getCaretColor()
{
return caretColor;
}
/**
* Sets the caret color.
* @param caretColor The caret color
*/
public final void setCaretColor(Color caretColor)
{
this.caretColor = caretColor;
invalidateSelectedLines();
}
/**
* Returns the selection color.
*/
public final Color getSelectionColor()
{
return selectionColor;
}
/**
* Sets the selection color.
* @param selectionColor The selection color
*/
public final void setSelectionColor(Color selectionColor)
{
this.selectionColor = selectionColor;
invalidateSelectedLines();
}
/**
* Returns the highlight color.
*/
public final Color getHighlightColor()
{
return lineHighlightColor;
}
/**
* Sets the highlight color.
* @param highlightColor The highlight color
*/
public final void setHighlightColor(Color highlightColor)
{
this.highlightColor = highlightColor;
repaint();
}
/**
* Returns the line highlight color.
*/
public final Color getLineHighlightColor()
{
return lineHighlightColor;
}
/**
* Sets the line highlight color.
* @param lineHighlightColor The line highlight color
*/
public final void setLineHighlightColor(Color lineHighlightColor)
{
this.lineHighlightColor = lineHighlightColor;
invalidateSelectedLines();
}
/**
* Returns true if line highlight is enabled, false otherwise.
*/
public final boolean isLineHighlightEnabled()
{
return lineHighlight;
}
/**
* Enables or disables current line highlighting.
* @param lineHighlight True if current line highlight should be enabled,
* false otherwise
*/
public final void setLineHighlightEnabled(boolean lineHighlight)
{
this.lineHighlight = lineHighlight;
invalidateSelectedLines();
}
/**
* Returns the bracket highlight color.
*/
public final Color getBracketHighlightColor()
{
return bracketHighlightColor;
}
/**
* Sets the bracket highlight color.
* @param bracketHighlightColor The bracket highlight color
*/
public final void setBracketHighlightColor(Color bracketHighlightColor)
{
this.bracketHighlightColor = bracketHighlightColor;
invalidateLine(textArea.getBracketLine());
}
/**
* Returns true if bracket highlighting is enabled, false otherwise.
* When bracket highlighting is enabled, the bracket matching the
* one before the caret (if any) is highlighted.
*/
public final boolean isBracketHighlightEnabled()
{
return bracketHighlight;
}
/**
* Enables or disables bracket highlighting.
* When bracket highlighting is enabled, the bracket matching the
* one before the caret (if any) is highlighted.
* @param bracketHighlight True if bracket highlighting should be
* enabled, false otherwise
*/
public final void setBracketHighlightEnabled(boolean bracketHighlight)
{
this.bracketHighlight = bracketHighlight;
invalidateLine(textArea.getBracketLine());
}
/**
* Returns true if the caret should be drawn as a block, false otherwise.
*/
public final boolean isBlockCaretEnabled()
{
return blockCaret;
}
/**
* Sets if the caret should be drawn as a block, false otherwise.
* @param blockCaret True if the caret should be drawn as a block,
* false otherwise.
*/
public final void setBlockCaretEnabled(boolean blockCaret)
{
this.blockCaret = blockCaret;
invalidateSelectedLines();
}
/**
* Returns the EOL marker color.
*/
public final Color getEOLMarkerColor()
{
return eolMarkerColor;
}
/**
* Sets the EOL marker color.
* @param eolMarkerColor The EOL marker color
*/
public final void setEOLMarkerColor(Color eolMarkerColor)
{
this.eolMarkerColor = eolMarkerColor;
repaint();
}
/**
* Returns true if EOL markers are drawn, false otherwise.
*/
public final boolean getEOLMarkersPainted()
{
return eolMarkers;
}
/**
* Sets if EOL markers are to be drawn.
* @param eolMarkers True if EOL markers should be drawn, false otherwise
*/
public final void setEOLMarkersPainted(boolean eolMarkers)
{
this.eolMarkers = eolMarkers;
repaint();
}
/**
* Returns true if invalid lines are painted as red tildes (~),
* false otherwise.
*/
public boolean getInvalidLinesPainted()
{
return paintInvalid;
}
/**
* Sets if invalid lines are to be painted as red tildes.
* @param paintInvalid True if invalid lines should be drawn, false otherwise
*/
public void setInvalidLinesPainted(boolean paintInvalid)
{
this.paintInvalid = paintInvalid;
}
/**
* Adds a custom highlight painter.
* @param highlight The highlight
*/
public void addCustomHighlight(TextAreaHighlight highlight)
{
highlight.init(textArea, highlights);
highlights = highlight;
}
/**
* Adds a custom first priority highlight painter.
* @param highlight The highlight
*/
public void addCustomFirstPriorityHighlight(TextAreaHighlight highlight)
{
highlight.init(textArea, firstPriorityHighlights);
firstPriorityHighlights = highlight;
}
/**
* Returns the tool tip to display at the specified location.
* @param evt The mouse event
*/
public String getToolTipText(MouseEvent evt)
{
if (highlights != null)
return highlights.getToolTipText(evt);
else
return null;
}
/**
* Returns the font metrics used by this component.
*/
public FontMetrics getFontMetrics()
{
return fm;
}
/**
* Sets the font for this component. This is overridden to update the
* cached font metrics and to recalculate which lines are visible.
* @param font The font
*/
public void setFont(Font font)
{
super.setFont(font);
fm = Toolkit.getDefaultToolkit().getFontMetrics(font);
textArea.recalculateVisibleLines();
}
/**
* Repaints the text.
* @param g The graphics context
*/
public void paint(Graphics gfx)
{
///// TEMP FIX /////
//setAntiAliasing(gfx);
tabSize = fm.charWidth(' ') *
((Integer) textArea .getDocument().getProperty(PlainDocument.tabSizeAttribute)).intValue();
Rectangle clipRect = gfx.getClipBounds();
gfx.setColor(getBackground());
gfx.fillRect(clipRect.x, clipRect.y, clipRect.width, clipRect.height);
// We don't use yToLine() here because that method doesn't
// return lines past the end of the document
int height = fm.getHeight();
int firstLine = textArea.getFirstLine();
int firstInvalid = firstLine + clipRect.y / height;
// Because the clipRect's height is usually an even multiple
// of the font height, we subtract 1 from it, otherwise one
// too many lines will always be painted.
int lastInvalid = firstLine + (clipRect.y + clipRect.height - 1) / height;
int x = textArea.getHorizontalOffset();
int lineCount = textArea.getLineCount();
try
{
TokenMarker tokenMarker = textArea.getDocument().getTokenMarker();
int maxWidth = textArea.maxHorizontalScrollWidth;
boolean updateMaxHorizontalScrollWidth = false;
for (int line = firstInvalid; line <= lastInvalid; line++)
{
boolean valid = line >= 0 && line < lineCount;
int width = paintLine(gfx, tokenMarker, valid, line, x) - x + 5 /* Yay */;
if (valid)
{
tokenMarker.setLineWidth(line, width);
if (width > maxWidth)
updateMaxHorizontalScrollWidth = true;
}
}
if (tokenMarker.isNextLineRequested())
{
int h = clipRect.y + clipRect.height;
repaint(0, h, getWidth(), getHeight() - h);
}
if (updateMaxHorizontalScrollWidth)
textArea.updateMaxHorizontalScrollWidth();
} catch (Exception e) {
System.err.println("Error repainting line" + " range {" + firstInvalid + "," + lastInvalid + "}:");
e.printStackTrace();
}
}
/**
* Marks a line as needing a repaint.
* @param line The line to invalidate
*/
public final void invalidateLine(int line)
{
repaint(0, textArea.lineToY(line) + fm.getMaxDescent() + fm.getLeading(), getWidth(), fm.getHeight());
}
/**
* Marks a range of lines as needing a repaint.
* @param firstLine The first line to invalidate
* @param lastLine The last line to invalidate
*/
public final void invalidateLineRange(int firstLine, int lastLine)
{
repaint(0, textArea.lineToY(firstLine) + fm.getMaxDescent() + fm.getLeading(), getWidth(),
(lastLine - firstLine + 1) * fm.getHeight());
}
/**
* Repaints the lines containing the selection.
*/
public final void invalidateSelectedLines()
{
invalidateLineRange(textArea.getSelectionStartLine(), textArea.getSelectionEndLine());
}
/**
* Implementation of TabExpander interface. Returns next tab stop after
* a specified point.
* @param x The x co-ordinate
* @param tabOffset Ignored
* @return The next tab stop after <i>x</i>
*/
public float nextTabStop(float x, int tabOffset)
{
if (tabSize == 0)
{
tabSize = fm.charWidth(' ') *
((Integer) textArea.getDocument().getProperty(PlainDocument.tabSizeAttribute)).intValue();
}
int offset = textArea.getHorizontalOffset();
int ntabs = ((int) x - offset) / tabSize;
return (ntabs + 1) * tabSize + offset;
}
/**
* Returns the painter's preferred size.
*/
public Dimension getPreferredSize()
{
Dimension dim = new Dimension();
dim.width = fm.charWidth('w') * cols;
dim.height = fm.getHeight() * rows;
return dim;
}
/**
* Returns the painter's minimum size.
*/
public Dimension getMinimumSize()
{
return getPreferredSize();
}
// protected members
protected JEditTextArea textArea;
protected SyntaxStyle[] styles;
protected Color caretColor;
protected Color selectionColor;
protected Color lineHighlightColor;
protected Color highlightColor;
protected Color bracketHighlightColor;
protected Color eolMarkerColor;
protected boolean blockCaret;
protected boolean lineHighlight;
protected boolean bracketHighlight;
protected boolean paintInvalid;
protected boolean eolMarkers;
protected int cols;
protected int rows;
protected int tabSize;
protected FontMetrics fm;
protected TextAreaHighlight highlights;
protected TextAreaHighlight firstPriorityHighlights;
protected int paintLine(Graphics gfx, TokenMarker tokenMarker, boolean valid, int line, int x)
{
Font defaultFont = getFont();
Color defaultColor = getForeground();
int y = textArea.lineToY(line);
if (!valid)
{
if (paintInvalid)
{
paintHighlight(gfx, line, y);
styles[Token.INVALID].setGraphicsFlags(gfx, defaultFont);
gfx.drawString("~", 0, y + fm.getHeight());
}
} else {
x = paintSyntaxLine(gfx, tokenMarker, line, defaultFont, defaultColor, x, y);
}
return x;
}
protected int paintSyntaxLine(Graphics gfx, TokenMarker tokenMarker, int line, Font defaultFont,
Color defaultColor, int x, int y)
{
// priority highlights first
if (firstPriorityHighlights != null)
firstPriorityHighlights.paintHighlight(gfx, line, y);
Segment tempSeg = textArea.lineSegment;
textArea.getLineText(line, textArea.lineSegment);
Token tokens = tokenMarker.markTokens(textArea.lineSegment, line);
Token first = tokens;
int backY = y + fm.getLeading() + fm.getMaxDescent();
int backHeight = fm.getHeight();
int backWidth = fm.charWidth('w');
int offset = x;
int offsetShift = 0;
int charOffset = 0;
String textLine = textArea.lineSegment.toString();
org.jext.JextTextArea jextArea = (org.jext.JextTextArea) textArea;
while (tokens.id != Token.END)
{
offsetShift = backWidth * org.jext.Utilities.getRealLength(textLine.substring(charOffset, charOffset + tokens.length),
jextArea.getTabSize());
charOffset += tokens.length;
if (tokens.highlightBackground)
{
gfx.setColor(highlightColor);
gfx.fillRect(offset, backY, offsetShift, backHeight);
}
offset += offsetShift;
tokens = tokens.next;
}
textArea.lineSegment = tempSeg;
paintHighlight(gfx, line, y);
textArea.getLineText(line, textArea.lineSegment);
gfx.setFont(defaultFont);
gfx.setColor(defaultColor);
y += fm.getHeight();
x = SyntaxUtilities.paintSyntaxLine(textArea.lineSegment, first,
styles, this, gfx, x, y);
if (eolMarkers)
{
gfx.setColor(eolMarkerColor);
gfx.drawString(".", x, y);
}
return x;
}
protected void paintHighlight(Graphics gfx, int line, int y)
{
if (line >= textArea.getSelectionStartLine() && line <= textArea.getSelectionEndLine())
paintLineHighlight(gfx, line, y);
if (linesIntervalHighlight && linesInterval > 0)
paintLinesInterval(gfx, line, y);
if (wrapGuide && wrapGuideOffset > 0)
paintWrapGuide(gfx, line, y);
if (highlights != null)
highlights.paintHighlight(gfx, line, y);
if (bracketHighlight && line == textArea.getBracketLine())
paintBracketHighlight(gfx, line, y);
if (line == textArea.getCaretLine())
paintCaret(gfx, line, y);
if (line == textArea.getShadowCaretLine())
paintShadowCaret(gfx, line, y);
}
protected void paintWrapGuide(Graphics gfx, int line, int y)
{
gfx.setColor(wrapGuideColor);
int _offset = y + (fm.getLeading() + fm.getMaxDescent());
int start = (line > 0) ? _offset : 0;
int end = (line != textArea.getLineCount() - 1) ? _offset + fm.getHeight() : textArea.getHeight();
int charWidth = fm.charWidth('m');
int offset = textArea.getHorizontalOffset();
int width = textArea.getWidth();
int off = wrapGuideOffset * charWidth + offset;
if (off >= 0 && off < width)
gfx.drawLine(off, start, off, end);
}
protected void paintLinesInterval(Graphics gfx, int line, int y)
{
if (((line + 1) % linesInterval) == 0)
{
int height = fm.getHeight();
int _offset = y + fm.getLeading() + fm.getMaxDescent();
int selectionStart = textArea.getSelectionStart();
int selectionEnd = textArea.getSelectionEnd();
gfx.setColor(linesIntervalColor);
gfx.fillRect(0, _offset, getWidth(), height);
gfx.setColor(selectionColor);
int selectionStartLine = textArea.getSelectionStartLine();
int selectionEndLine = textArea.getSelectionEndLine();
int lineStart = textArea.getLineStartOffset(line);
int x1, x2;
if (textArea.isSelectionRectangular())
{
int lineLen = textArea.getLineLength(line);
x1 = textArea.offsetToX(line,
Math.min(lineLen, selectionStart - textArea.getLineStartOffset(selectionStartLine)));
x2 = textArea.offsetToX(line, Math.min(lineLen, selectionEnd - textArea.getLineStartOffset(selectionEndLine)));
if (x1 == x2)
x2++;
} else if (selectionStartLine == selectionEndLine) {
x1 = textArea.offsetToX(line, selectionStart - lineStart);
x2 = textArea.offsetToX(line, selectionEnd - lineStart);
} else if (line == selectionStartLine) {
x1 = textArea.offsetToX(line, selectionStart - lineStart);
x2 = textArea.offsetToX(line, textArea.getLineLength(line));
} else if (line == selectionEndLine) {
x1 = 0;
x2 = textArea.offsetToX(line, selectionEnd - lineStart);
} else {
x1 = 0;
x2 = textArea.offsetToX(line, textArea.getLineLength(line));
}
gfx.fillRect(x1 > x2 ? x2 : x1, _offset, x1 > x2 ? (x1 - x2) : (x2 - x1), height);
}
}
protected void paintLineHighlight(Graphics gfx, int line, int y)
{
int height = fm.getHeight();
y += fm.getLeading() + fm.getMaxDescent();
int selectionStart = textArea.getSelectionStart();
int selectionEnd = textArea.getSelectionEnd();
if (selectionStart == selectionEnd)
{
if (lineHighlight)
{
gfx.setColor(lineHighlightColor);
gfx.fillRect(0, y, getWidth(), height);
}
} else {
gfx.setColor(selectionColor);
int selectionStartLine = textArea.getSelectionStartLine();
int selectionEndLine = textArea.getSelectionEndLine();
int lineStart = textArea.getLineStartOffset(line);
int x1, x2;
if (textArea.isSelectionRectangular())
{
int lineLen = textArea.getLineLength(line);
x1 = textArea.offsetToX(line,
Math.min(lineLen, selectionStart - textArea.getLineStartOffset(selectionStartLine)));
x2 = textArea.offsetToX(line,
Math.min(lineLen, selectionEnd - textArea.getLineStartOffset(selectionEndLine)));
if (x1 == x2)
x2++;
} else if (selectionStartLine == selectionEndLine) {
x1 = textArea.offsetToX(line, selectionStart - lineStart);
x2 = textArea.offsetToX(line, selectionEnd - lineStart);
} else if (line == selectionStartLine) {
x1 = textArea.offsetToX(line, selectionStart - lineStart);
//x2 = getWidth();
x2 = textArea.offsetToX(line, textArea.getLineLength(line));
} else if (line == selectionEndLine) {
x1 = 0;
x2 = textArea.offsetToX(line, selectionEnd - lineStart);
} else {
x1 = 0;
//x2 = getWidth();
x2 = textArea.offsetToX(line, textArea.getLineLength(line));
}
int w = x1 > x2 ? (x1 - x2) : (x2 - x1);
if (w == 0) w = 4;
// "inlined" min/max()
gfx.fillRect(x1 > x2 ? x2 : x1, y, w, height);
}
}
protected void paintBracketHighlight(Graphics gfx, int line, int y)
{
int position = textArea.getBracketPosition();
if (position == -1)
return;
y += fm.getLeading() + fm.getMaxDescent();
int x = textArea.offsetToX(line, position);
gfx.setColor(bracketHighlightColor);
// Hack!!! Since there is no fast way to get the character
// from the bracket matching routine, we use ( since all
// brackets probably have the same width anyway
gfx.fillRect(x, y, fm.charWidth('(') - 1, fm.getHeight() - 1);
}
protected void paintCaret(Graphics gfx, int line, int y)
{
if (textArea.isCaretVisible())
{
int offset = textArea.getCaretPosition() - textArea.getLineStartOffset(line);
int caretX = textArea.offsetToX(line, offset);
int caretWidth = ((blockCaret || textArea.isOverwriteEnabled()) ? fm.charWidth('w') : 1);
y += fm.getLeading() + fm.getMaxDescent();
int height = fm.getHeight();
gfx.setColor(caretColor);
if (textArea.isOverwriteEnabled())
{
gfx.fillRect(caretX, y + height - 1, caretWidth, 1);
} else if (caretWidth > 1) {
gfx.drawRect(caretX, y, caretWidth - 1, height - 1);
} else {
gfx.drawLine(caretX, y, caretX, y + height - 1);
}
}
}
protected void paintShadowCaret(Graphics gfx, int line, int y)
{
int offset = textArea.getShadowCaretPosition() - textArea.getLineStartOffset(line);
int caretX = textArea.offsetToX(line, offset);
y += fm.getLeading() + fm.getMaxDescent();
int height = fm.getHeight();
gfx.setColor(caretColor.darker());
for (int i = 0; i < height; i += 3)
gfx.drawLine(caretX, y + i, caretX, y + i + 1);
}
}
The table below shows all metrics for TextAreaPainter.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 89.00 | Number of blocks | |
| BLOCK_COMMENT | 19.00 | Number of block comment lines | |
| COMMENTS | 210.00 | Comment lines | |
| COMMENT_DENSITY | 0.52 | Comment density | |
| COMPARISONS | 92.00 | Number of comparison operators | |
| CYCLOMATIC | 116.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 44.00 | Comments in declarations | |
| DOC_COMMENT | 159.00 | Number of javadoc comment lines | |
| ELOC | 403.00 | Effective lines of code | |
| EXEC_COMMENTS | 12.00 | Comments in executable code | |
| EXITS | 88.00 | Procedure exits | |
| FUNCTIONS | 57.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 90.95 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 124.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 0.00 | JAVA0002 Package name does not begin with a top level domain name or country code | |
| JAVA0003 | 0.00 | JAVA0003 Minimize use of on-demand (.*) imports | |
| JAVA0004 | 0.00 | JAVA0004 Unnecessary import from java.lang | |
| JAVA0005 | 1.00 | JAVA0005 Imports not in specified order | |
| JAVA0006 | 0.00 | JAVA0006 Empty finally block | |
| JAVA0007 | 2.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 0.00 | JAVA0008 Empty catch block | |
| JAVA0009 | 0.00 | JAVA0009 Protected member in final class | |
| JAVA0010 | 0.00 | JAVA0010 Non-instantiable class does not contain a non-private static member | |
| JAVA0011 | 0.00 | JAVA0011 Abstract class does not contain an abstract method | |
| JAVA0012 | 0.00 | JAVA0012 Non-constructor method with same name as declaring class | |
| JAVA0013 | 0.00 | JAVA0013 Non-blank final field is not static | |
| JAVA0014 | 0.00 | JAVA0014 Class with only static members has non-private constructor | |
| JAVA0015 | 0.00 | JAVA0015 Package class contains public nested type | |
| JAVA0016 | 0.00 | JAVA0016 Abstract class contains public constructor | |
| JAVA0017 | 0.00 | JAVA0017 Class name does not have required form | |
| JAVA0018 | 0.00 | JAVA0018 Method name does not have required form | |
| JAVA0019 | 0.00 | JAVA0019 Interface name does not have required form | |
| JAVA0020 | 0.00 | JAVA0020 Field name does not have required form | |
| JAVA0021 | 0.00 | JAVA0021 Interface method name does not have required form | |
| JAVA0022 | 0.00 | JAVA0022 Static final field name does not have required form | |
| JAVA0023 | 0.00 | JAVA0023 Empty finalize method | |
| JAVA0024 | 0.00 | JAVA0024 Empty class | |
| JAVA0025 | 0.00 | JAVA0025 Method override is empty | |
| JAVA0026 | 0.00 | JAVA0026 Finalize method with parameters | |
| JAVA0029 | 1.00 | JAVA0029 Private method not used | |
| JAVA0030 | 0.00 | JAVA0030 Private field not used | |
| JAVA0031 | 0.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 0.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 19.00 | JAVA0034 Missing braces in if statement | |
| JAVA0035 | 1.00 | JAVA0035 Missing braces in for statement | |
| JAVA0036 | 0.00 | JAVA0036 Missing braces in while statement | |
| JAVA0038 | 0.00 | JAVA0038 Non-case label in switch statement | |
| JAVA0039 | 0.00 | JAVA0039 Break statement with label | |
| JAVA0040 | 0.00 | JAVA0040 Switch statement contains N cases (maximum: M) | |
| JAVA0041 | 0.00 | JAVA0041 Nested synchronized block | |
| JAVA0042 | 0.00 | JAVA0042 Empty synchronized statement | |
| JAVA0043 | 0.00 | JAVA0043 Inner class does not use outer class | |
| JAVA0044 | 0.00 | JAVA0044 Serializable class with no instance variables | |
| JAVA0045 | 0.00 | JAVA0045 Serializable class with only transient fields | |
| JAVA0046 | 0.00 | JAVA0046 Name of class not derived from Exception ends with 'Exception' | |
| JAVA0047 | 0.00 | JAVA0047 Serializable class derives from invalid base class | |
| JAVA0048 | 0.00 | JAVA0048 Name of class derived from Exception does not end with 'Exception' | |
| JAVA0049 | 0.00 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0050 | 0.00 | JAVA0050 Class derives from java.lang.Error | |
| JAVA0051 | 0.00 | JAVA0051 Class derives from java.lang.RuntimeException | |
| JAVA0052 | 0.00 | JAVA0052 Class derives from java.lang.Throwable | |
| JAVA0053 | 0.00 | JAVA0053 Unused label | |
| JAVA0054 | 0.00 | JAVA0054 Inheritance depth N exceeds maximum M | |
| JAVA0055 | 0.00 | JAVA0055 Class should be interface | |
| JAVA0056 | 0.00 | JAVA0056 Unnecessary abstract modifier for interface or annotation | |
| JAVA0057 | 0.00 | JAVA0057 Unnecessary default constructor | |
| JAVA0058 | 0.00 | JAVA0058 Constructor calls super() | |
| JAVA0059 | 0.00 | JAVA0059 Method override only calls super() | |
| JAVA0061 | 0.00 | JAVA0061 Inaccessible member in anonymous class | |
| JAVA0062 | 0.00 | JAVA0062 Public class missing public member or protected constructor | |
| JAVA0063 | 0.00 | JAVA0063 Identifier name should not contain '$' | |
| JAVA0064 | 0.00 | JAVA0064 N variations of identifier name (maximum: M) | |
| JAVA0065 | 0.00 | JAVA0065 Unnecessary final modifier for method in final class | |
| JAVA0066 | 0.00 | JAVA0066 Unnecessary modifier for interface nested type | |
| JAVA0067 | 0.00 | JAVA0067 Array descriptor on identifier name | |
| JAVA0068 | 0.00 | JAVA0068 Modifiers not declared in recommended order | |
| JAVA0071 | 0.00 | JAVA0071 Strings compared with == | |
| JAVA0073 | 0.00 | JAVA0073 Integer division in floating-point context | |
| JAVA0074 | 0.00 | JAVA0074 Use of Object.notify() | |
| JAVA0075 | 0.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 0.00 | JAVA0076 Use of magic number | |
| JAVA0077 | 0.00 | JAVA0077 Private field not used in declaring class | |
| JAVA0078 | 0.00 | JAVA0078 Floating point values compared with == | |
| JAVA0079 | 0.00 | JAVA0079 Use of instance to reference static member | |
| JAVA0080 | 0.00 | JAVA0080 Import declaration not used | |
| JAVA0081 | 0.00 | JAVA0081 Boolean literal in comparison | |
| JAVA0082 | 0.00 | JAVA0082 Unnecessary widening cast | |
| JAVA0083 | 0.00 | JAVA0083 Unnecessary instanceof test | |
| JAVA0084 | 0.00 | JAVA0084 Should use compound assignment operator | |
| JAVA0085 | 0.00 | JAVA0085 Use of sun.* class | |
| JAVA0087 | 0.00 | JAVA0087 Use of Thread.sleep() | |
| JAVA0089 | 0.00 | JAVA0089 Use of restricted package | |
| JAVA0092 | 0.00 | JAVA0092 Use of restricted type | |
| JAVA0093 | 0.00 | JAVA0093 Redundant assignment | |
| JAVA0094 | 0.00 | JAVA0094 Field hides a superclass field | |
| JAVA0095 | 0.00 | JAVA0095 Uninitialized private field | |
| JAVA0096 | 0.00 | JAVA0096 Field in nested class hides outer field | |
| JAVA0098 | 0.00 | JAVA0098 Minimize use of implicit field initializers | |
| JAVA0100 | 1.00 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0101 | 0.00 | JAVA0101 Unnecessary modifier for field in interface | |
| JAVA0102 | 0.00 | JAVA0102 Last statement in finalize() not super.finalize() | |
| JAVA0103 | 0.00 | JAVA0103 Explicit call to finalize() | |
| JAVA0104 | 0.00 | JAVA0104 finalize() only calls super.finalize() | |
| JAVA0105 | 0.00 | JAVA0105 Duplicate import declaration | |
| JAVA0106 | 0.00 | JAVA0106 Unnecessary import from current package | |
| JAVA0108 | 2.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 1.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 17.00 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0111 | 0.00 | JAVA0111 Incorrect javadoc: @return tag for void method | |
| JAVA0112 | 0.00 | JAVA0112 Incorrect javadoc: no exception 'exception' in throws | |
| JAVA0113 | 0.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 0.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 0.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 2.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 17.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 0.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 0.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 0.00 | JAVA0123 Use all three components of for loop | |
| JAVA0125 | 0.00 | JAVA0125 Continue statement with label | |
| JAVA0126 | 0.00 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0128 | 0.00 | JAVA0128 Public constructor in non-public class | |
| JAVA0130 | 0.00 | JAVA0130 Non-static method does not use instance fields | |
| JAVA0131 | 0.00 | JAVA0131 Compatible method does not override base | |
| JAVA0132 | 0.00 | JAVA0132 Method overload with compatible signature | |
| JAVA0133 | 0.00 | JAVA0133 Non-synchronized method overrides synchronized method | |
| JAVA0135 | 0.00 | JAVA0135 Only one of Object.equals and Object.hashCode defined: missing 'method' | |
| JAVA0136 | 1.00 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0137 | 0.00 | JAVA0137 Non-abstract class missing constructor | |
| JAVA0138 | 1.00 | JAVA0138 N parameters defined for method (maximum: M) | |
| JAVA0139 | 0.00 | JAVA0139 Definition of main other than public static void main(java.lang.String[]) | |
| JAVA0141 | 0.00 | JAVA0141 Unnecessary modifier for method in interface | |
| JAVA0143 | 0.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 0.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 0.00 | JAVA0145 Tab character used in source file | |
| JAVA0150 | 0.00 | JAVA0150 java.lang.Error (or subclass) thrown | |
| JAVA0153 | 0.00 | JAVA0153 Inefficient conversion of integer to string | |
| JAVA0159 | 0.00 | JAVA0159 Inefficient conversion of string to integer | |
| JAVA0160 | 0.00 | JAVA0160 Method does not throw specified exception | |
| JAVA0161 | 0.00 | JAVA0161 Conditional wait() not in loop | |
| JAVA0163 | 0.00 | JAVA0163 Empty statement | |
| JAVA0165 | 0.00 | JAVA0165 Conflicting return statement in finally block | |
| JAVA0166 | 1.00 | JAVA0166 Generic exception caught | |
| JAVA0167 | 0.00 | JAVA0167 ThreadDeath not rethrown | |
| JAVA0169 | 0.00 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| JAVA0170 | 0.00 | JAVA0170 Caught exception not derived from java.lang.Exception | |
| JAVA0171 | 0.00 | JAVA0171 Unused local variable | |
| JAVA0173 | 1.00 | JAVA0173 Unused method parameter | |
| JAVA0174 | 0.00 | JAVA0174 Assigned local variable never used | |
| JAVA0175 | 0.00 | JAVA0175 Successive assignment to variable | |
| JAVA0176 | 2.00 | JAVA0176 Local variable name does not have required form | |
| JAVA0177 | 4.00 | JAVA0177 Variable declaration missing initializer | |
| JAVA0179 | 0.00 | JAVA0179 Local variable hides visible field | |
| JAVA0233 | 0.00 | JAVA0233 Definition of serialVersionUID other than 'private static final long serialVersionUID' | |
| JAVA0234 | 1.00 | JAVA0234 Class is Serializable but does not define serialVersionUID | |
| JAVA0235 | 0.00 | JAVA0235 Class defines serialVersionUID but does not implement Serializable | |
| JAVA0236 | 0.00 | JAVA0236 Attempt to clone an object which does not implement Cloneable | |
| JAVA0237 | 0.00 | JAVA0237 Class implements Cloneable but does not have public clone method | |
| JAVA0238 | 0.00 | JAVA0238 Clone method does not call super.clone() | |
| JAVA0239 | 0.00 | JAVA0239 Class declares 'readObject' or 'writeObject' but does not implement Serializable | |
| JAVA0240 | 0.00 | JAVA0240 Serializable class which declares readObject or writeObject but not both | |
| JAVA0241 | 0.00 | JAVA0241 'readObject' or 'writeObject' should be declared private in Serializable class | |
| JAVA0242 | 0.00 | JAVA0242 Transient field in non-Serializable class | |
| JAVA0243 | 0.00 | JAVA0243 'readResolve' or 'writeReplace' should be declared private or protected | |
| JAVA0244 | 0.00 | JAVA0244 Field or method name in subclass differs only by case from inherited field or method | |
| JAVA0245 | 0.00 | JAVA0245 JUnit TestCase with non-trivial constructor | |
| JAVA0246 | 0.00 | JAVA0246 JUnit assertXXX statement missing message parameter | |
| JAVA0247 | 0.00 | JAVA0247 JUnit 'setUp()' and 'tearDown()' should call super method | |
| JAVA0248 | 0.00 | JAVA0248 JUnit method 'setUp' or 'tearDown' with incorrect signature | |
| JAVA0249 | 0.00 | JAVA0249 JUnit TestCase 'suite()' should be declared static | |
| JAVA0250 | 0.00 | JAVA0250 JUnit TestCase declares testXXX method with incorrect signature | |
| JAVA0251 | 0.00 | JAVA0251 Use '%n' for line breaks in printf/format for platform independence | |
| JAVA0252 | 0.00 | JAVA0252 'enum' is a Java 1.5 reserved word | |
| JAVA0253 | 0.00 | JAVA0253 Not all enum constants consumed in switch statement | |
| JAVA0254 | 0.00 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0255 | 0.00 | JAVA0255 Result of method invocation not used | |
| JAVA0256 | 1.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 0.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 1.00 | JAVA0259 Return of collection/array field | |
| JAVA0260 | 0.00 | JAVA0260 Use 'enum' instead of Enumerated Type pattern | |
| JAVA0261 | 0.00 | JAVA0261 Use specialized Enum collection types | |
| JAVA0262 | 0.00 | JAVA0262 Use of char in integer context | |
| JAVA0263 | 0.00 | JAVA0263 Long literal ends with 'l' instead of 'L' | |
| JAVA0264 | 0.00 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0265 | 1.00 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0266 | 0.00 | JAVA0266 Use of System.out | |
| JAVA0267 | 1.00 | JAVA0267 Use of System.err | |
| JAVA0269 | 0.00 | JAVA0269 Contents of StringBuffer never used | |
| JAVA0270 | 0.00 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0271 | 0.00 | JAVA0271 Minimize use of on-demand (.*) static imports | |
| JAVA0272 | 0.00 | JAVA0272 Thread.run() called | |
| JAVA0273 | 0.00 | JAVA0273 Non-final derivative of Thread calls start() in constructor | |
| JAVA0274 | 0.00 | JAVA0274 Serializable class has a synchronized readObject() | |
| JAVA0275 | 0.00 | JAVA0275 Serializable class has a synchronized writeObject() and no other synchronized methods | |
| JAVA0276 | 0.00 | JAVA0276 Unnecessary use of String constructor | |
| JAVA0277 | 0.00 | JAVA0277 Iterator.next() implementation does not throw NoSuchElementException | |
| JAVA0278 | 0.00 | JAVA0278 Unnecessary use of Boolean constructor | |
| JAVA0279 | 0.00 | JAVA0279 Serialization method readObject or readObjectNoData calls an overridable method | |
| JAVA0280 | 0.00 | JAVA0280 IllegalMonitorStateException caught | |
| JAVA0281 | 0.00 | JAVA0281 Iterator.next() not called in loop | |
| JAVA0282 | 0.00 | JAVA0282 Call to Iterator.next() in loop which does not test Iterator.hasNext() | |
| JAVA0283 | 0.00 | JAVA0283 Control variable not updated in loop body | |
| JAVA0284 | 0.00 | JAVA0284 Explicit garbage collection | |
| JAVA0285 | 0.00 | JAVA0285 Dereference of potentially null variable | |
| JAVA0286 | 0.00 | JAVA0286 Dereference of null variable | |
| JAVA0287 | 0.00 | JAVA0287 Unnecessary null check | |
| JAVA0288 | 0.00 | JAVA0288 Inconsistent null check | |
| LINES | 898.00 | Number of lines in the source file | |
| LINE_COMMENT | 32.00 | Number of line comments | |
| LOC | 556.00 | Lines of code | |
| LOGICAL_LINES | 286.00 | Number of statements | |
| LOOPS | 3.00 | Number of loops | |
| NEST_DEPTH | 4.00 | Maximum nesting depth | |
| OPERANDS | 1303.00 | Number of operands | |
| OPERATORS | 2295.00 | Number of operators | |
| PARAMS | 65.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 3598.00 | Halstead program length | |
| PROGRAM_VOCAB | 449.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 59.00 | Number of return points from functions | |
| SIZE | 26153.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 394.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 55.00 | Number of unique operators | |
| WHITESPACE | 132.00 | Number of whitespace lines | |