Package org.gjt.sp.jedit.textarea
Class TextAreaExtension
- java.lang.Object
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- org.gjt.sp.jedit.textarea.TextAreaExtension
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- Direct Known Subclasses:
PageBreakExtension
,StructureMatcher.Highlight
public abstract class TextAreaExtension extends java.lang.Object
Subclasses of this class can perform custom painting and tool tip handling in the text area and gutter.
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Constructor Summary
Constructors Constructor Description TextAreaExtension()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.String
getToolTipText(int x, int y)
Called by the text area when the mouse hovers over the location specified in the mouse event.void
paintInvalidLine(java.awt.Graphics2D gfx, int screenLine, int y)
Called by the text area when the extension is to paint a screen line which is not part of the buffer.void
paintScreenLineRange(java.awt.Graphics2D gfx, int firstLine, int lastLine, int[] physicalLines, int[] start, int[] end, int y, int lineHeight)
Paints a range of screen lines.void
paintValidLine(java.awt.Graphics2D gfx, int screenLine, int physicalLine, int start, int end, int y)
Called by the text area when the extension is to paint a screen line which has an associated physical line number in the buffer.
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Method Detail
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paintScreenLineRange
public void paintScreenLineRange(java.awt.Graphics2D gfx, int firstLine, int lastLine, int[] physicalLines, int[] start, int[] end, int y, int lineHeight)
Paints a range of screen lines. The default implementation callspaintValidLine(Graphics2D,int,int,int,int,int)
andpaintInvalidLine(Graphics2D,int,int)
.- Parameters:
gfx
- A graphics contextfirstLine
- The first screen linelastLine
- The last screen linephysicalLines
- The list of physical line numbers. Entries are -1 if the screen line is out of range.start
- An array of screen line start offsets.end
- An array of screen line end offsetsy
- The y co-ordinatelineHeight
- The line height- Since:
- jEdit 4.2pre2
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paintValidLine
public void paintValidLine(java.awt.Graphics2D gfx, int screenLine, int physicalLine, int start, int end, int y)
Called by the text area when the extension is to paint a screen line which has an associated physical line number in the buffer. Note that since one physical line may consist of several screen lines due to soft wrap, the start and end offsets of the screen line are passed in as well.- Parameters:
gfx
- The graphics contextscreenLine
- The screen line numberphysicalLine
- The physical line numberstart
- The offset where the screen line begins, from the start of the bufferend
- The offset where the screen line ends, from the start of the buffery
- The y co-ordinate of the top of the line's bounding box- Since:
- jEdit 4.0pre4
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paintInvalidLine
public void paintInvalidLine(java.awt.Graphics2D gfx, int screenLine, int y)
Called by the text area when the extension is to paint a screen line which is not part of the buffer. This can happen if the buffer is shorter than the height of the text area, for example.- Parameters:
gfx
- The graphics contextscreenLine
- The screen line numbery
- The y co-ordinate of the top of the line's bounding box- Since:
- jEdit 4.0pre4
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getToolTipText
public java.lang.String getToolTipText(int x, int y)
Called by the text area when the mouse hovers over the location specified in the mouse event.- Parameters:
x
- The x co-ordinatey
- The y co-ordinate- Since:
- jEdit 4.0pre4
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