/jEdit/tags/jedit-4-2-pre4/org/gjt/sp/jedit/textarea/TextAreaPainter.java
Java | 1257 lines | 710 code | 156 blank | 391 comment | 118 complexity | cabe5074949ddaf73e055d91566fb2c4 MD5 | raw file
Possible License(s): BSD-3-Clause, AGPL-1.0, Apache-2.0, LGPL-2.0, LGPL-3.0, GPL-2.0, CC-BY-SA-3.0, LGPL-2.1, GPL-3.0, MPL-2.0-no-copyleft-exception, IPL-1.0
- /*
- * TextAreaPainter.java - Paints the text area
- * :tabSize=8:indentSize=8:noTabs=false:
- * :folding=explicit:collapseFolds=1:
- *
- * Copyright (C) 1999, 2003 Slava Pestov
- *
- * 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;
- //{{{ Imports
- import javax.swing.text.*;
- import javax.swing.JComponent;
- import java.awt.event.MouseEvent;
- import java.awt.font.*;
- import java.awt.*;
- import java.util.HashMap;
- import org.gjt.sp.jedit.buffer.IndentFoldHandler;
- import org.gjt.sp.jedit.syntax.*;
- import org.gjt.sp.jedit.Buffer;
- import org.gjt.sp.jedit.Debug;
- import org.gjt.sp.jedit.OperatingSystem;
- import org.gjt.sp.util.Log;
- //}}}
- /**
- * The text area painter is the component responsible for displaying the
- * text of the current buffer. The only methods in this class that should
- * be called by plugins are those for adding and removing
- * text area extensions.
- *
- * @see #addExtension(TextAreaExtension)
- * @see #addExtension(int,TextAreaExtension)
- * @see #removeExtension(TextAreaExtension)
- * @see TextAreaExtension
- * @see JEditTextArea
- *
- * @author Slava Pestov
- * @version $Id: TextAreaPainter.java 4805 2003-06-22 01:09:47Z spestov $
- */
- public class TextAreaPainter extends JComponent implements TabExpander
- {
- //{{{ Layers
- /**
- * The lowest possible layer.
- * @see #addExtension(int,TextAreaExtension)
- * @since jEdit 4.0pre4
- */
- public static final int LOWEST_LAYER = Integer.MIN_VALUE;
- /**
- * Below selection layer. The JDiff plugin will use this.
- * @see #addExtension(int,TextAreaExtension)
- * @since jEdit 4.0pre4
- */
- public static final int BACKGROUND_LAYER = -60;
- /**
- * The line highlight and collapsed fold highlight layer.
- * @see #addExtension(int,TextAreaExtension)
- * @since jEdit 4.0pre7
- */
- public static final int LINE_BACKGROUND_LAYER = -50;
- /**
- * Below selection layer.
- * @see #addExtension(int,TextAreaExtension)
- * @since jEdit 4.0pre4
- */
- public static final int BELOW_SELECTION_LAYER = -40;
- /**
- * Selection layer. Most extensions will be above this layer, but some
- * (eg, JDiff) will want to be below the selection.
- * @see #addExtension(int,TextAreaExtension)
- * @since jEdit 4.0pre4
- */
- public static final int SELECTION_LAYER = -30;
- /**
- * Wrap guide layer. Most extensions will be above this layer.
- * @since jEdit 4.0pre4
- */
- public static final int WRAP_GUIDE_LAYER = -20;
- /**
- * Below most extensions layer.
- * @see #addExtension(int,TextAreaExtension)
- * @since jEdit 4.0pre4
- */
- public static final int BELOW_MOST_EXTENSIONS_LAYER = -10;
- /**
- * Default extension layer. This is above the wrap guide but below the
- * structure highlight.
- * @since jEdit 4.0pre4
- */
- public static final int DEFAULT_LAYER = 0;
- /**
- * Block caret layer. Most extensions will be below this layer.
- * @since jEdit 4.2pre1
- */
- public static final int BLOCK_CARET_LAYER = 50;
- /**
- * Bracket highlight layer. Most extensions will be below this layer.
- * @since jEdit 4.0pre4
- */
- public static final int BRACKET_HIGHLIGHT_LAYER = 100;
- /**
- * Text layer. Most extensions will be below this layer.
- * @since jEdit 4.2pre1
- */
- public static final int TEXT_LAYER = 200;
- /**
- * Caret layer. Most extensions will be below this layer.
- * @since jEdit 4.2pre1
- */
- public static final int CARET_LAYER = 300;
- /**
- * Highest possible layer.
- * @since jEdit 4.0pre4
- */
- public static final int HIGHEST_LAYER = Integer.MAX_VALUE;
- //}}}
- //{{{ setBounds() method
- /**
- * It is a bad idea to override this, but we need to get the component
- * event before the first repaint.
- */
- public void setBounds(int x, int y, int width, int height)
- {
- if(x == getX() && y == getY() && width == getWidth()
- && height == getHeight())
- {
- return;
- }
- super.setBounds(x,y,width,height);
- textArea.recalculateVisibleLines();
- if(textArea.getBuffer().isLoaded())
- textArea.recalculateLastPhysicalLine();
- textArea.propertiesChanged();
- textArea.scrollBarsInitialized = true;
- } //}}}
- //{{{ isManagingFocus() method
- /**
- * Returns if this component can be traversed by pressing the
- * Tab key. This returns false.
- */
- public boolean isManagingFocus()
- {
- return false;
- } //}}}
- //{{{ getFocusTraversalKeysEnabled() method
- /**
- * Makes the tab key work in Java 1.4.
- * @since jEdit 3.2pre4
- */
- public boolean getFocusTraversalKeysEnabled()
- {
- return false;
- } //}}}
- //{{{ Getters and setters
- //{{{ getStyles() method
- /**
- * 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;
- } //}}}
- //{{{ setStyles() method
- /**
- * 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)
- {
- // assumed this is called after a font render context is set up.
- // changing font render context settings without a setStyles()
- // call will not reset cached monospaced font info.
- fonts.clear();
- this.styles = styles;
- styles[Token.NULL] = new SyntaxStyle(getForeground(),null,getFont());
- for(int i = 0; i < styles.length; i++)
- {
- styles[i].setCharWidth(getCharWidth(styles[i].getFont()));
- }
- repaint();
- } //}}}
- //{{{ getCaretColor() method
- /**
- * Returns the caret color.
- */
- public final Color getCaretColor()
- {
- return caretColor;
- } //}}}
- //{{{ setCaretColor() method
- /**
- * Sets the caret color.
- * @param caretColor The caret color
- */
- public final void setCaretColor(Color caretColor)
- {
- this.caretColor = caretColor;
- if(textArea.getBuffer() != null)
- textArea.invalidateLine(textArea.getCaretLine());
- } //}}}
- //{{{ getSelectionColor() method
- /**
- * Returns the selection color.
- */
- public final Color getSelectionColor()
- {
- return selectionColor;
- } //}}}
- //{{{ setSelectionColor() method
- /**
- * Sets the selection color.
- * @param selectionColor The selection color
- */
- public final void setSelectionColor(Color selectionColor)
- {
- this.selectionColor = selectionColor;
- if(textArea.getBuffer() != null)
- textArea.invalidateSelectedLines();
- } //}}}
- //{{{ getMultipleSelectionColor() method
- /**
- * Returns the multiple selection color.
- * @since jEdit 4.2pre1
- */
- public final Color getMultipleSelectionColor()
- {
- return multipleSelectionColor;
- } //}}}
- //{{{ setMultipleSelectionColor() method
- /**
- * Sets the multiple selection color.
- * @param multipleSelectionColor The multiple selection color
- * @since jEdit 4.2pre1
- */
- public final void setMultipleSelectionColor(Color multipleSelectionColor)
- {
- this.multipleSelectionColor = multipleSelectionColor;
- if(textArea.getBuffer() != null)
- textArea.invalidateSelectedLines();
- } //}}}
- //{{{ getLineHighlightColor() method
- /**
- * Returns the line highlight color.
- */
- public final Color getLineHighlightColor()
- {
- return lineHighlightColor;
- } //}}}
- //{{{ setLineHighlightColor() method
- /**
- * Sets the line highlight color.
- * @param lineHighlightColor The line highlight color
- */
- public final void setLineHighlightColor(Color lineHighlightColor)
- {
- this.lineHighlightColor = lineHighlightColor;
- if(textArea.getBuffer() != null)
- textArea.invalidateLine(textArea.getCaretLine());
- } //}}}
- //{{{ isLineHighlightEnabled() method
- /**
- * Returns true if line highlight is enabled, false otherwise.
- */
- public final boolean isLineHighlightEnabled()
- {
- return lineHighlight;
- } //}}}
- //{{{ setLineHighlightEnabled() method
- /**
- * 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;
- if(textArea.getBuffer() != null)
- textArea.invalidateSelectedLines();
- } //}}}
- //{{{ getStructureHighlightColor() method
- /**
- * Returns the structure highlight color.
- * @since jEdit 4.2pre3
- */
- public final Color getStructureHighlightColor()
- {
- return structureHighlightColor;
- } //}}}
- //{{{ setStructureHighlightColor() method
- /**
- * Sets the structure highlight color.
- * @param structureHighlightColor The bracket highlight color
- * @since jEdit 4.2pre3
- */
- public final void setStructureHighlightColor(
- Color structureHighlightColor)
- {
- this.structureHighlightColor = structureHighlightColor;
- StructureMatcher.Match match = textArea.getStructureMatch();
- if(match != null)
- {
- textArea.invalidateLineRange(
- match.startLine,match.endLine
- );
- }
- } //}}}
- //{{{ isStructureHighlightEnabled() method
- /**
- * Returns true if structure highlighting is enabled, false otherwise.
- * @since jEdit 4.2pre3
- */
- public final boolean isStructureHighlightEnabled()
- {
- return structureHighlight;
- } //}}}
- //{{{ setStructureHighlightEnabled() method
- /**
- * Enables or disables structure highlighting.
- * @param structureHighlight True if structure highlighting should be
- * enabled, false otherwise
- * @since jEdit 4.2pre3
- */
- public final void setStructureHighlightEnabled(boolean structureHighlight)
- {
- this.structureHighlight = structureHighlight;
- StructureMatcher.Match match = textArea.getStructureMatch();
- if(match != null)
- {
- textArea.invalidateLineRange(
- match.startLine,
- match.endLine
- );
- }
- } //}}}
- //{{{ isBlockCaretEnabled() method
- /**
- * Returns true if the caret should be drawn as a block, false otherwise.
- */
- public final boolean isBlockCaretEnabled()
- {
- return blockCaret;
- } //}}}
- //{{{ setBlockCaretEnabled() method
- /**
- * 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;
- extensionMgr.removeExtension(caretExtension);
- if(blockCaret)
- addExtension(BLOCK_CARET_LAYER,caretExtension);
- else
- addExtension(CARET_LAYER,caretExtension);
- if(textArea.getBuffer() != null)
- textArea.invalidateLine(textArea.getCaretLine());
- } //}}}
- //{{{ getEOLMarkerColor() method
- /**
- * Returns the EOL marker color.
- */
- public final Color getEOLMarkerColor()
- {
- return eolMarkerColor;
- } //}}}
- //{{{ setEOLMarkerColor() method
- /**
- * Sets the EOL marker color.
- * @param eolMarkerColor The EOL marker color
- */
- public final void setEOLMarkerColor(Color eolMarkerColor)
- {
- this.eolMarkerColor = eolMarkerColor;
- repaint();
- } //}}}
- //{{{ getEOLMarkersPainted() method
- /**
- * Returns true if EOL markers are drawn, false otherwise.
- */
- public final boolean getEOLMarkersPainted()
- {
- return eolMarkers;
- } //}}}
- //{{{ setEOLMarkersPainted() method
- /**
- * 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();
- } //}}}
- //{{{ getWrapGuideColor() method
- /**
- * Returns the wrap guide color.
- */
- public final Color getWrapGuideColor()
- {
- return wrapGuideColor;
- } //}}}
- //{{{ setWrapGuideColor() method
- /**
- * Sets the wrap guide color.
- * @param wrapGuideColor The wrap guide color
- */
- public final void setWrapGuideColor(Color wrapGuideColor)
- {
- this.wrapGuideColor = wrapGuideColor;
- repaint();
- } //}}}
- //{{{ isWrapGuidePainted() method
- /**
- * Returns true if the wrap guide is drawn, false otherwise.
- * @since jEdit 4.0pre4
- */
- public final boolean isWrapGuidePainted()
- {
- return wrapGuide;
- } //}}}
- //{{{ setWrapGuidePainted() method
- /**
- * Sets if the wrap guide is to be drawn.
- * @param wrapGuide True if the wrap guide should be drawn, false otherwise
- */
- public final void setWrapGuidePainted(boolean wrapGuide)
- {
- this.wrapGuide = wrapGuide;
- repaint();
- } //}}}
- //{{{ getFoldLineStyle() method
- /**
- * Returns the fold line style. The first element is the style for
- * lines with a fold level greater than 3. The remaining elements
- * are for fold levels 1 to 3.
- */
- public final SyntaxStyle[] getFoldLineStyle()
- {
- return foldLineStyle;
- } //}}}
- //{{{ setFoldLineStyle() method
- /**
- * Sets the fold line style. The first element is the style for
- * lines with a fold level greater than 3. The remaining elements
- * are for fold levels 1 to 3.
- * @param foldLineStyle The fold line style
- */
- public final void setFoldLineStyle(SyntaxStyle[] foldLineStyle)
- {
- this.foldLineStyle = foldLineStyle;
- repaint();
- } //}}}
- //{{{ setAntiAliasEnabled() method
- /**
- * Sets if anti-aliasing should be enabled. Has no effect when
- * running on Java 1.1.
- * @since jEdit 3.2pre6
- */
- public void setAntiAliasEnabled(boolean antiAlias)
- {
- this.antiAlias = antiAlias;
- updateRenderingHints();
- } //}}}
- //{{{ isAntiAliasEnabled() method
- /**
- * Returns if anti-aliasing is enabled.
- * @since jEdit 3.2pre6
- */
- public boolean isAntiAliasEnabled()
- {
- return antiAlias;
- } //}}}
- //{{{ setFractionalFontMetricsEnabled() method
- /**
- * Sets if fractional font metrics should be enabled. Has no effect when
- * running on Java 1.1.
- * @since jEdit 3.2pre6
- */
- public void setFractionalFontMetricsEnabled(boolean fracFontMetrics)
- {
- this.fracFontMetrics = fracFontMetrics;
- updateRenderingHints();
- } //}}}
- //{{{ isFractionalFontMetricsEnabled() method
- /**
- * Returns if fractional font metrics are enabled.
- * @since jEdit 3.2pre6
- */
- public boolean isFractionalFontMetricsEnabled()
- {
- return fracFontMetrics;
- } //}}}
- //{{{ getFontRenderContext() method
- /**
- * Returns the font render context.
- * @since jEdit 4.0pre4
- */
- public FontRenderContext getFontRenderContext()
- {
- return fontRenderContext;
- } //}}}
- //}}}
- //{{{ addExtension() method
- /**
- * Adds a text area extension, which can perform custom painting and
- * tool tip handling.
- * @param extension The extension
- * @since jEdit 4.0pre4
- */
- public void addExtension(TextAreaExtension extension)
- {
- extensionMgr.addExtension(DEFAULT_LAYER,extension);
- repaint();
- } //}}}
- //{{{ addExtension() method
- /**
- * Adds a text area extension, which can perform custom painting and
- * tool tip handling.
- * @param layer The layer to add the extension to. Note that more than
- * extension can share the same layer.
- * @param extension The extension
- * @since jEdit 4.0pre4
- */
- public void addExtension(int layer, TextAreaExtension extension)
- {
- extensionMgr.addExtension(layer,extension);
- repaint();
- } //}}}
- //{{{ removeExtension() method
- /**
- * Removes a text area extension. It will no longer be asked to
- * perform custom painting and tool tip handling.
- * @param extension The extension
- * @since jEdit 4.0pre4
- */
- public void removeExtension(TextAreaExtension extension)
- {
- extensionMgr.removeExtension(extension);
- repaint();
- } //}}}
- //{{{ getExtensions() method
- /**
- * Returns an array of registered text area extensions. Useful for
- * debugging purposes.
- * @since jEdit 4.1pre5
- */
- public TextAreaExtension[] getExtensions()
- {
- return extensionMgr.getExtensions();
- } //}}}
- //{{{ getToolTipText() method
- /**
- * Returns the tool tip to display at the specified location.
- * @param evt The mouse event
- */
- public String getToolTipText(MouseEvent evt)
- {
- if(!textArea.getBuffer().isLoaded())
- return null;
- return extensionMgr.getToolTipText(evt.getX(),evt.getY());
- } //}}}
- //{{{ getFontMetrics() method
- /**
- * Returns the font metrics used by this component.
- */
- public FontMetrics getFontMetrics()
- {
- return fm;
- } //}}}
- //{{{ setFont() method
- /**
- * 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 = getFontMetrics(font);
- textArea.recalculateVisibleLines();
- textArea.propertiesChanged();
- } //}}}
- //{{{ paintComponent() method
- /**
- * Repaints the text.
- * @param g The graphics context
- */
- public void paintComponent(Graphics _gfx)
- {
- Graphics2D gfx = (Graphics2D)_gfx;
- gfx.setRenderingHints(renderingHints);
- fontRenderContext = gfx.getFontRenderContext();
- Rectangle clipRect = gfx.getClipBounds();
- gfx.setColor(getBackground());
- gfx.fillRect(clipRect.x,clipRect.y,clipRect.width,clipRect.height);
- Buffer buffer = textArea.getBuffer();
- if(!buffer.isLoaded())
- return;
- int x = textArea.getHorizontalOffset();
- int height = fm.getHeight();
- int firstInvalid = 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 = (clipRect.y + clipRect.height - 1) / height;
- if(Debug.PAINT_TIMER && lastInvalid - firstInvalid >= 1)
- Log.log(Log.DEBUG,this,"repainting " + (lastInvalid - firstInvalid) + " lines");
- int y = (clipRect.y - clipRect.y % height);
- textArea.updateMaxHorizontalScrollWidth = false;
- extensionMgr.paintScreenLineRange(textArea,gfx,
- firstInvalid,lastInvalid,y,height);
- if(textArea.updateMaxHorizontalScrollWidth)
- textArea.updateMaxHorizontalScrollWidth();
- if(buffer.isNextLineRequested())
- {
- int h = clipRect.y + clipRect.height;
- textArea.chunkCache.invalidateChunksFrom(lastInvalid + 1);
- repaint(0,h,getWidth(),getHeight() - h);
- }
- textArea.displayManager._notifyScreenLineChanges();
- } //}}}
- //{{{ nextTabStop() method
- /**
- * 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)
- {
- int ntabs = (int)(x / textArea.tabSize);
- return (ntabs + 1) * textArea.tabSize;
- } //}}}
- //{{{ getPreferredSize() method
- /**
- * Returns the painter's preferred size.
- */
- public Dimension getPreferredSize()
- {
- Dimension dim = new Dimension();
- char[] foo = new char[80];
- for(int i = 0; i < foo.length; i++)
- foo[i] = ' ';
- dim.width = (int)(getFont().getStringBounds(foo,0,foo.length,
- fontRenderContext).getWidth());
- dim.height = fm.getHeight() * 25;
- return dim;
- } //}}}
- //{{{ getMinimumSize() method
- /**
- * Returns the painter's minimum size.
- */
- public Dimension getMinimumSize()
- {
- return getPreferredSize();
- } //}}}
- //{{{ Package-private members
- //{{{ Instance variables
- /* package-private since they are accessed by inner classes and we
- * want this to be fast */
- JEditTextArea textArea;
- SyntaxStyle[] styles;
- Color caretColor;
- Color selectionColor;
- Color multipleSelectionColor;
- Color lineHighlightColor;
- Color structureHighlightColor;
- Color eolMarkerColor;
- Color wrapGuideColor;
- SyntaxStyle[] foldLineStyle;
- boolean blockCaret;
- boolean lineHighlight;
- boolean structureHighlight;
- boolean eolMarkers;
- boolean wrapGuide;
- boolean antiAlias;
- boolean fracFontMetrics;
- // should try to use this as little as possible.
- FontMetrics fm;
- //}}}
- //{{{ TextAreaPainter constructor
- /**
- * Creates a new painter. Do not create instances of this class
- * directly.
- */
- TextAreaPainter(JEditTextArea textArea)
- {
- enableEvents(AWTEvent.FOCUS_EVENT_MASK
- | AWTEvent.KEY_EVENT_MASK
- | AWTEvent.MOUSE_EVENT_MASK);
- this.textArea = textArea;
- fonts = new HashMap();
- extensionMgr = new ExtensionManager();
- setAutoscrolls(true);
- setOpaque(true);
- setRequestFocusEnabled(false);
- setCursor(Cursor.getPredefinedCursor(Cursor.TEXT_CURSOR));
- fontRenderContext = new FontRenderContext(null,false,false);
- addExtension(LINE_BACKGROUND_LAYER,new PaintLineBackground());
- addExtension(SELECTION_LAYER,new PaintSelection());
- addExtension(WRAP_GUIDE_LAYER,new PaintWrapGuide());
- addExtension(BRACKET_HIGHLIGHT_LAYER,new StructureMatcher
- .Highlight(textArea));
- addExtension(TEXT_LAYER,new PaintText());
- caretExtension = new PaintCaret();
- } //}}}
- //}}}
- //{{{ Private members
- //{{{ Instance variables
- private ExtensionManager extensionMgr;
- private PaintCaret caretExtension;
- private RenderingHints renderingHints;
- private FontRenderContext fontRenderContext;
- private HashMap fonts;
- //}}}
- //{{{ updateRenderingHints() method
- private void updateRenderingHints()
- {
- HashMap hints = new HashMap();
- if(antiAlias)
- {
- //hints.put(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
- hints.put(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
- hints.put(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
- }
- else
- {
- hints.put(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
- hints.put(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
- }
- hints.put(RenderingHints.KEY_FRACTIONALMETRICS,
- fracFontMetrics ?
- RenderingHints.VALUE_FRACTIONALMETRICS_ON
- : RenderingHints.VALUE_FRACTIONALMETRICS_OFF);
- renderingHints = new RenderingHints(hints);
- fontRenderContext = new FontRenderContext(null,antiAlias,
- fracFontMetrics);
- } //}}}
- //{{{ getCharWidth() method
- private int getCharWidth(Font font)
- {
- Integer returnValue = (Integer)fonts.get(font);
- if(returnValue == null)
- {
- int minWidth = Integer.MAX_VALUE;
- int maxWidth = Integer.MIN_VALUE;
- FontMetrics fm = getFontMetrics(font);
- int[] widths = fm.getWidths();
- for(int i = 0; i < widths.length; i++)
- {
- int width = widths[i];
- if(width == 0 || !font.canDisplay((char)i))
- continue;
- minWidth = Math.min(width,minWidth);
- maxWidth = Math.max(width,maxWidth);
- }
- String str = "iwiwiwiau1234";
- double width1 = font.createGlyphVector(textArea.getPainter()
- .getFontRenderContext(),str).getLogicalBounds()
- .getWidth();
- double width2 = str.length() * maxWidth;
- if(minWidth == maxWidth
- && width1 == width2)
- {
- Log.log(Log.DEBUG,this,"Using monospaced font optimization: " + font);
- returnValue = new Integer(maxWidth);
- }
- else
- {
- Log.log(Log.DEBUG,this,"Not using monospaced font optimization: " + font);
- Log.log(Log.DEBUG,this,"Minimum width = " + minWidth
- + ", maximum width = " + maxWidth);
- returnValue = new Integer(0);
- }
- fonts.put(font,returnValue);
- }
- return returnValue.intValue();
- } //}}}
- //}}}
- //{{{ Inner classes
- //{{{ PaintLineBackground class
- class PaintLineBackground extends TextAreaExtension
- {
- //{{{ paintValidLine() method
- public void paintValidLine(Graphics2D gfx, int screenLine,
- int physicalLine, int start, int end, int y)
- {
- // minimise access$ methods
- JEditTextArea textArea = TextAreaPainter.this.textArea;
- Buffer buffer = textArea.getBuffer();
- //{{{ Paint line highlight and collapsed fold highlight
- boolean collapsedFold =
- (physicalLine < buffer.getLineCount() - 1
- && buffer.isFoldStart(physicalLine)
- && !textArea.displayManager
- .isLineVisible(physicalLine + 1));
- SyntaxStyle foldLineStyle = null;
- if(collapsedFold)
- {
- int level = buffer.getFoldLevel(physicalLine + 1);
- if(buffer.getFoldHandler() instanceof IndentFoldHandler)
- level = Math.max(1,level / buffer.getIndentSize());
- if(level > 3)
- level = 0;
- foldLineStyle = TextAreaPainter.this.foldLineStyle[level];
- }
- int caret = textArea.getCaretPosition();
- boolean paintLineHighlight = isLineHighlightEnabled()
- && caret >= start && caret < end
- && textArea.selection.size() == 0;
- Color bgColor;
- if(paintLineHighlight)
- bgColor = lineHighlightColor;
- else if(collapsedFold)
- {
- bgColor = foldLineStyle.getBackgroundColor();
- if(bgColor == null)
- bgColor = getBackground();
- }
- else
- bgColor = getBackground();
- if(paintLineHighlight || collapsedFold)
- {
- gfx.setColor(bgColor);
- gfx.fillRect(0,y,getWidth(),fm.getHeight());
- } //}}}
- //{{{ Paint token backgrounds
- ChunkCache.LineInfo lineInfo = textArea.chunkCache
- .getLineInfo(screenLine);
- if(lineInfo.chunks != null)
- {
- float baseLine = y + fm.getHeight()
- - fm.getLeading() - fm.getDescent();
- Chunk.paintChunkBackgrounds(
- lineInfo.chunks,gfx,
- textArea.getHorizontalOffset(),
- baseLine);
- } //}}}
- } //}}}
- } //}}}
- //{{{ PaintSelection class
- class PaintSelection extends TextAreaExtension
- {
- //{{{ paintValidLine() method
- public void paintValidLine(Graphics2D gfx, int screenLine,
- int physicalLine, int start, int end, int y)
- {
- if(textArea.selection.size() == 0)
- return;
- gfx.setColor(textArea.isMultipleSelectionEnabled()
- ? getMultipleSelectionColor()
- : getSelectionColor());
- for(int i = textArea.selection.size() - 1;
- i >= 0; i--)
- {
- paintSelection(gfx,screenLine,
- physicalLine,start,end,y,
- (Selection)textArea.selection
- .get(i));
- }
- } //}}}
- //{{{ paintSelection() method
- private void paintSelection(Graphics2D gfx, int screenLine,
- int physicalLine, int start, int end, int y, Selection s)
- {
- if(end <= s.start || start > s.end)
- return;
- int selStartScreenLine = textArea.getScreenLineOfOffset(s.start);
- int selEndScreenLine = textArea.getScreenLineOfOffset(s.end);
- Buffer buffer = textArea.getBuffer();
- int lineStart = buffer.getLineStartOffset(physicalLine);
- int x1, x2;
- if(s instanceof Selection.Rect)
- {
- start -= lineStart;
- end -= lineStart;
- Selection.Rect rect = (Selection.Rect)s;
- int _start = rect.getStartColumn(buffer);
- int _end = rect.getEndColumn(buffer);
- int lineLen = buffer.getLineLength(physicalLine);
- int[] total = new int[1];
- int rectStart = buffer.getOffsetOfVirtualColumn(
- physicalLine,_start,total);
- if(rectStart == -1)
- {
- x1 = (_start - total[0]) * textArea.charWidth;
- rectStart = lineLen;
- }
- else
- x1 = 0;
- int rectEnd = buffer.getOffsetOfVirtualColumn(
- physicalLine,_end,total);
- if(rectEnd == -1)
- {
- x2 = (_end - total[0]) * textArea.charWidth;
- rectEnd = lineLen;
- }
- else
- x2 = 0;
- if(end <= rectStart || start > rectEnd)
- return;
- x1 = (rectStart < start ? 0
- : x1 + textArea.offsetToXY(physicalLine,rectStart,textArea.returnValue).x);
- x2 = (rectEnd > end ? getWidth()
- : x2 + textArea.offsetToXY(physicalLine,rectEnd,textArea.returnValue).x);
- }
- else if(selStartScreenLine == selEndScreenLine
- && selStartScreenLine != -1)
- {
- x1 = textArea.offsetToXY(physicalLine,
- s.start - lineStart,textArea.returnValue).x;
- x2 = textArea.offsetToXY(physicalLine,
- s.end - lineStart,textArea.returnValue).x;
- }
- else if(screenLine == selStartScreenLine)
- {
- x1 = textArea.offsetToXY(physicalLine,
- s.start - lineStart,textArea.returnValue).x;
- x2 = getWidth();
- }
- else if(screenLine == selEndScreenLine)
- {
- x1 = 0;
- x2 = textArea.offsetToXY(physicalLine,
- s.end - lineStart,textArea.returnValue).x;
- }
- else
- {
- x1 = 0;
- x2 = getWidth();
- }
- if(x1 < 0)
- x1 = 0;
- if(x2 < 0)
- x2 = 0;
- if(x1 == x2)
- x2++;
- gfx.fillRect(x1,y,x2 - x1,fm.getHeight());
- } //}}}
- } //}}}
- //{{{ PaintWrapGuide class
- class PaintWrapGuide extends TextAreaExtension
- {
- public void paintScreenLineRange(Graphics2D gfx, int firstLine,
- int lastLine, int[] physicalLines, int[] start,
- int[] end, int y, int lineHeight)
- {
- if(textArea.getDisplayManager().wrapMargin != 0
- && isWrapGuidePainted())
- {
- gfx.setColor(getWrapGuideColor());
- int x = textArea.getHorizontalOffset()
- + textArea.getDisplayManager()
- .wrapMargin;
- gfx.drawLine(x,y,x,y + (lastLine - firstLine
- + 1) * lineHeight);
- }
- }
- public String getToolTipText(int x, int y)
- {
- if(textArea.getDisplayManager().wrapMargin != 0 && isWrapGuidePainted())
- {
- int wrapGuidePos = textArea.getDisplayManager().wrapMargin
- + textArea.getHorizontalOffset();
- if(Math.abs(x - wrapGuidePos) < 5)
- {
- return String.valueOf(textArea.getBuffer()
- .getProperty("maxLineLen"));
- }
- }
- return null;
- }
- } //}}}
- //{{{ PaintText class
- class PaintText extends TextAreaExtension
- {
- public void paintValidLine(Graphics2D gfx, int screenLine,
- int physicalLine, int start, int end, int y)
- {
- ChunkCache.LineInfo lineInfo = textArea.chunkCache
- .getLineInfo(screenLine);
- Font defaultFont = getFont();
- Color defaultColor = getForeground();
- gfx.setFont(defaultFont);
- gfx.setColor(defaultColor);
- int x = textArea.getHorizontalOffset();
- int originalX = x;
- float baseLine = y + fm.getHeight()
- - fm.getLeading() - fm.getDescent();
- if(lineInfo.chunks != null)
- {
- x += Chunk.paintChunkList(lineInfo.chunks,
- gfx,textArea.getHorizontalOffset(),
- baseLine,!Debug.DISABLE_GLYPH_VECTOR);
- }
- Buffer buffer = textArea.getBuffer();
- if(!lineInfo.lastSubregion)
- {
- gfx.setFont(defaultFont);
- gfx.setColor(eolMarkerColor);
- gfx.drawString(":",Math.max(x,
- textArea.getHorizontalOffset()
- + textArea.getDisplayManager().wrapMargin + textArea.charWidth),
- baseLine);
- x += textArea.charWidth;
- }
- else if(physicalLine < buffer.getLineCount() - 1
- && buffer.isFoldStart(physicalLine)
- && !textArea.displayManager
- .isLineVisible(physicalLine + 1))
- {
- int level = buffer.getFoldLevel(physicalLine + 1);
- if(buffer.getFoldHandler() instanceof IndentFoldHandler)
- level = Math.max(1,level / buffer.getIndentSize());
- if(level > 3)
- level = 0;
- SyntaxStyle foldLineStyle = TextAreaPainter.this.foldLineStyle[level];
- Font font = foldLineStyle.getFont();
- gfx.setFont(font);
- gfx.setColor(foldLineStyle.getForegroundColor());
- int nextLine;
- int nextScreenLine = screenLine + 1;
- if(nextScreenLine < textArea.getVisibleLines())
- {
- nextLine = textArea.chunkCache.getLineInfo(nextScreenLine)
- .physicalLine;
- }
- else
- {
- nextLine = textArea.displayManager
- .getNextVisibleLine(physicalLine);
- }
- if(nextLine == -1)
- nextLine = textArea.getLineCount();
- int count = nextLine - physicalLine - 1;
- String str = " [" + count + " lines]";
- float width = (float)font.getStringBounds(
- str,fontRenderContext).getWidth();
- gfx.drawString(str,x,baseLine);
- x += width;
- }
- else if(eolMarkers)
- {
- gfx.setFont(defaultFont);
- gfx.setColor(eolMarkerColor);
- gfx.drawString(".",x,baseLine);
- x += textArea.charWidth;
- }
- lineInfo.width = (x - originalX);
- if(lineInfo.width > textArea.maxHorizontalScrollWidth)
- textArea.updateMaxHorizontalScrollWidth = true;
- }
- } //}}}
- //{{{ PaintCaret class
- class PaintCaret extends TextAreaExtension
- {
- public void paintValidLine(Graphics2D gfx, int screenLine,
- int physicalLine, int start, int end, int y)
- {
- if(!textArea.isCaretVisible())
- return;
- int caret = textArea.getCaretPosition();
- if(caret < start || caret >= end)
- return;
- int offset = caret - textArea.getLineStartOffset(physicalLine);
- textArea.offsetToXY(physicalLine,offset,textArea.returnValue);
- int caretX = textArea.returnValue.x;
- int height = fm.getHeight();
- gfx.setColor(caretColor);
- if(textArea.isOverwriteEnabled())
- {
- gfx.drawLine(caretX,y + height - 1,
- caretX + textArea.charWidth,y + height - 1);
- }
- else if(blockCaret)
- gfx.drawRect(caretX,y,textArea.charWidth - 1,height - 1);
- else
- gfx.drawLine(caretX,y,caretX,y + height - 1);
- }
- } //}}}
- //}}}
- }