com.jidesoft.editor
Class CodeEditorPainter

java.lang.Object
  java.awt.Component
      java.awt.Container
          javax.swing.JComponent
              com.jidesoft.editor.CodeEditorPainter

All Implemented Interfaces:

ImageObserver, MenuContainer, Serializable, TabExpander

public class CodeEditorPainter
extends JComponent
implements TabExpander

The text area repaint manager. It performs double buffering and paints lines of text.

Version:

$Id: TextAreaPainter.java,v 1.24 1999/12/13 03:40:30 sp Exp $

Author:

Slava Pestov

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class javax.swing.JComponent

JComponent.AccessibleJComponent

Nested classes/interfaces inherited from class java.awt.Container

Container.AccessibleAWTContainer

Nested classes/interfaces inherited from class java.awt.Component

Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy

Field Summary

int	_composedCaretX
TextLayout	_composedTextLayout
protected CodeEditor	_editor
protected FontMetrics	_fm
protected Segment	currentLine
protected int	currentLineIndex
protected Token	currentLineTokens

Fields inherited from class javax.swing.JComponent

accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

CodeEditorPainter(CodeEditor editor)
Creates a new repaint manager.

Method Summary

protected int	getCaretHeight()
protected int	getCaretStartY(int visualLine)
CodeEditor	getCodeEditor()
Font	getFont()
FontMetrics	getFontMetrics() Returns the font metrics used by this component.
int	getLineHeight()
String	getToolTipText(MouseEvent event)
void	invalidateLine(int line) Marks a view line as needing a repaint.
void	invalidateLineRange(int firstLine, int lastLine) Marks a range of lines as needing a repaint.
void	invalidateRange(int startOffset, int endOffset)
void	invalidateSelectedLines() Repaints the lines containing the selection.
boolean	isManagingFocus() Returns if this component can be traversed by pressing the Tab key.
protected boolean	isSpanSelected(FoldingSpan span, int viewLine, int column, CaretPosition selectionStartVp, CaretPosition selectionEndVp) Check if the span is all selected.
float	nextTabStop(float x, int tabOffset) Implementation of TabExpander interface.
int	nextTabStop(int column)
void	paint(Graphics g) Repaints the text.
protected void	paintBracketHighlight(Graphics g, int line, int y)
protected void	paintCaret(Graphics g, int visualLine)
void	paintColumnGuides(Graphics g, Rectangle rect)
int	paintFoldedText(Graphics g, Font font, String text, int x, int y, FontMetrics fm)
protected void	paintHighlight(Graphics g, int line, int viewLine, CaretPosition selectionStartVp, CaretPosition selectionEndVp, int y)
protected void	paintImeInput(Graphics2D gfx, int screenLine, int physicalLine, int start, int end, int y)
protected void	paintLine(Graphics g, TokenMarker tokenMarker, int line, int viewLine, CaretPosition selectionStartVp, CaretPosition selectionEndVp, int x, int y, com.jidesoft.editor.FoldingState state)
protected void	paintLineHighlight(Graphics g, int line, int visualLine, CaretPosition selectionStartVp, CaretPosition selectionEndVp, int y)
protected void	paintLineSelection(Graphics g, int visualLine, CaretPosition selectionStartVp, CaretPosition selectionEndVp, int y)
protected void	paintPlainLine(Graphics g, int line, int visualLine, CaretPosition selectionStartVp, CaretPosition selectionEndVp, Font defaultFont, Color defaultColor, int x, int y)
protected int	paintSyntaxLine(Graphics g, TokenMarker tokenMarker, int line, int viewLine, int start, int end, CaretPosition selectionStartVp, CaretPosition selectionEndVp, Font defaultFont, Color defaultColor, int x, int y, boolean paintHighlight)
void	setFont(Font font) Sets the font for this component.

Methods inherited from class javax.swing.JComponent

addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getAccessibleContext, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getTopLevelAncestor, getTransferHandler, getUIClassID, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, paramString, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update, updateUI

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusBackward, transferFocusDownCycle, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusUpCycle

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

currentLineIndex

protected int currentLineIndex

currentLineTokens

protected Token currentLineTokens

currentLine

protected Segment currentLine

_editor

protected CodeEditor _editor

_fm

protected FontMetrics _fm

_composedTextLayout

public TextLayout _composedTextLayout

_composedCaretX

public int _composedCaretX

Constructor Detail

CodeEditorPainter

public CodeEditorPainter(CodeEditor editor)

Creates a new repaint manager. This should be not be called directly.

Parameters:

editor - the code editor instance

Method Detail

isManagingFocus

public final boolean isManagingFocus()

Returns if this component can be traversed by pressing the Tab key. This returns false.

Overrides:

isManagingFocus in class JComponent

getFontMetrics

public FontMetrics getFontMetrics()

Returns the font metrics used by this component.

Returns:

the font metrics

setFont

public void setFont(Font font)

Sets the font for this component. This is overridden to update the cached font metrics and to recalculate which lines are visible.

Overrides:

setFont in class JComponent

Parameters:

font - The font

getToolTipText

public String getToolTipText(MouseEvent event)

Overrides:

getToolTipText in class JComponent

paint

public void paint(Graphics g)

Repaints the text.

Overrides:

paint in class JComponent

Parameters:

g - The graphics context

paintImeInput

protected void paintImeInput(Graphics2D gfx,
                             int screenLine,
                             int physicalLine,
                             int start,
                             int end,
                             int y)

invalidateLine

public final void invalidateLine(int line)

Marks a view line as needing a repaint.

Parameters:

line - the view line index to invalidate

invalidateRange

public final void invalidateRange(int startOffset,
                                  int endOffset)

Parameters:

startOffset - start offset

endOffset - end offset

invalidateLineRange

public final void invalidateLineRange(int firstLine,
                                      int lastLine)

Marks a range of lines as needing a repaint.

Parameters:

firstLine - The first view line index to invalidate

lastLine - The last view line index to invalidate

invalidateSelectedLines

public final void invalidateSelectedLines()

Repaints the lines containing the selection.

nextTabStop

public float nextTabStop(float x,
                         int tabOffset)

Implementation of TabExpander interface. Returns next tab stop after a specified point.

Specified by:

nextTabStop in interface TabExpander

Parameters:

x - The x co-ordinate

tabOffset - Ignored

Returns:

The next tab stop after x

nextTabStop

public int nextTabStop(int column)

getFont

public Font getFont()

Specified by:

getFont in interface MenuContainer

Overrides:

getFont in class Component

paintLine

protected void paintLine(Graphics g,
                         TokenMarker tokenMarker,
                         int line,
                         int viewLine,
                         CaretPosition selectionStartVp,
                         CaretPosition selectionEndVp,
                         int x,
                         int y,
                         com.jidesoft.editor.FoldingState state)

isSpanSelected

protected boolean isSpanSelected(FoldingSpan span,
                                 int viewLine,
                                 int column,
                                 CaretPosition selectionStartVp,
                                 CaretPosition selectionEndVp)

Check if the span is all selected.

Parameters:

span - the span

viewLine - the view line the span in

column - the view column the span start with

selectionStartVp - the view position of selection start

selectionEndVp - the view position of selection end

Returns:

true if the span is selected. Otherwise false.

paintPlainLine

protected void paintPlainLine(Graphics g,
                              int line,
                              int visualLine,
                              CaretPosition selectionStartVp,
                              CaretPosition selectionEndVp,
                              Font defaultFont,
                              Color defaultColor,
                              int x,
                              int y)

paintSyntaxLine

protected int paintSyntaxLine(Graphics g,
                              TokenMarker tokenMarker,
                              int line,
                              int viewLine,
                              int start,
                              int end,
                              CaretPosition selectionStartVp,
                              CaretPosition selectionEndVp,
                              Font defaultFont,
                              Color defaultColor,
                              int x,
                              int y,
                              boolean paintHighlight)

paintHighlight

protected void paintHighlight(Graphics g,
                              int line,
                              int viewLine,
                              CaretPosition selectionStartVp,
                              CaretPosition selectionEndVp,
                              int y)

paintLineHighlight

protected void paintLineHighlight(Graphics g,
                                  int line,
                                  int visualLine,
                                  CaretPosition selectionStartVp,
                                  CaretPosition selectionEndVp,
                                  int y)

paintLineSelection

protected void paintLineSelection(Graphics g,
                                  int visualLine,
                                  CaretPosition selectionStartVp,
                                  CaretPosition selectionEndVp,
                                  int y)

paintBracketHighlight

protected void paintBracketHighlight(Graphics g,
                                     int line,
                                     int y)

paintCaret

protected void paintCaret(Graphics g,
                          int visualLine)

getCaretStartY

protected int getCaretStartY(int visualLine)

getCaretHeight

protected int getCaretHeight()

getLineHeight

public int getLineHeight()

getCodeEditor

public CodeEditor getCodeEditor()

paintFoldedText

public int paintFoldedText(Graphics g,
                           Font font,
                           String text,
                           int x,
                           int y,
                           FontMetrics fm)

paintColumnGuides

public void paintColumnGuides(Graphics g,
                              Rectangle rect)