| java.lang.Object
 org.gjt.sp.jedit.textarea.ChunkCache
| ChunkCache | | class ChunkCache (Code) | | Manages low-level text display tasks - the visible lines in the TextArea.
author:
Slava Pestov
version:
$Id: ChunkCache.java 8271 2006-12-28 08:05:51Z kpouer $ |
| Inner Class :static class LineInfo | |
| Method Summary | |
| int | getAbovePosition(int physicalLine, int offset, int x, boolean ignoreWrap)
| | int | getBelowPosition(int physicalLine, int offset, int x, boolean ignoreWrap)
| | LineInfo | getLineInfo(int screenLine)
| | LineInfo[] | getLineInfosForPhysicalLine(int physicalLine)
| | int | getLineSubregionCount(int physicalLine)
| | int | getMaxHorizontalScrollWidth()
Returns the max line width of the textarea. | | int | getScreenLineOfOffset(int line, int offset)
Parameters:
line - physical line number of document
Parameters:
offset - number of characters from the left of the line. | | int | getSubregionEndOffset(int line, int offset)
Returns the end offset of the specified subregion of the specified
physical line. | | static int | getSubregionOfOffset(int offset, LineInfo[] lineInfos)
Returns the subregion containing the specified offset. | | int | getSubregionStartOffset(int line, int offset)
Returns the start offset of the specified subregion of the specified
physical line. | | void | invalidateAll()
| | void | invalidateChunksFrom(int screenLine)
| | void | invalidateChunksFromPhys(int physicalLine)
| | boolean | needFullRepaint()
The needFullRepaint variable becomes true when the number of screen
lines in a physical line changes. | | void | recalculateVisibleLines()
Recalculate visible lines. | | void | scrollDown(int amount)
| | void | scrollUp(int amount)
| | void | setBuffer(JEditBuffer buffer)
| | int | subregionOffsetToX(int physicalLine, int offset)
Converts an offset within a subregion into an x co-ordinate. | | static int | subregionOffsetToX(LineInfo info, int offset)
Converts an offset within a subregion into an x co-ordinate. | | int | xToSubregionOffset(int physicalLine, int subregion, int x, boolean round)
Converts an x co-ordinate within a subregion into an offset from the
start of that subregion. | | static int | xToSubregionOffset(LineInfo info, int x, boolean round)
Converts an x co-ordinate within a subregion into an offset from the
start of that subregion. |
| getAbovePosition | | int getAbovePosition(int physicalLine, int offset, int x, boolean ignoreWrap)(Code) | |
Parameters:
physicalLine - The physical line number
Parameters:
offset - The offset
Parameters:
x - The location
Parameters:
ignoreWrap - If true, behave as if soft wrap is off even if itis on |
| getBelowPosition | | int getBelowPosition(int physicalLine, int offset, int x, boolean ignoreWrap)(Code) | |
Parameters:
physicalLine - The physical line number
Parameters:
offset - The offset
Parameters:
x - The location
Parameters:
ignoreWrap - If true, behave as if soft wrap is off even if itis on |
| getLineInfo | | LineInfo getLineInfo(int screenLine)(Code) | | |
| getLineInfosForPhysicalLine | | LineInfo[] getLineInfosForPhysicalLine(int physicalLine)(Code) | | |
| getLineSubregionCount | | int getLineSubregionCount(int physicalLine)(Code) | | |
| getMaxHorizontalScrollWidth | | int getMaxHorizontalScrollWidth()(Code) | | Returns the max line width of the textarea.
It will check all lines the first invalid line.
the max line width |
| getScreenLineOfOffset | | int getScreenLineOfOffset(int line, int offset)(Code) | |
Parameters:
line - physical line number of document
Parameters:
offset - number of characters from the left of the line. number of pixels from the left of the textArea where thecursor should be |
| getSubregionEndOffset | | int getSubregionEndOffset(int line, int offset)(Code) | | Returns the end offset of the specified subregion of the specified
physical line.
Parameters:
line - The physical line number
Parameters:
offset - An offset |
| getSubregionOfOffset | | static int getSubregionOfOffset(int offset, LineInfo[] lineInfos)(Code) | | Returns the subregion containing the specified offset. A subregion
is a subset of a physical line. Each screen line corresponds to one
subregion. Unlike the
ChunkCache.getScreenLineOfOffset(int,int) method,
this method works with non-visible lines too.
Parameters:
offset - the offset
Parameters:
lineInfos - a lineInfos array. Usualy the array is the result ofChunkCache.getLineInfosForPhysicalLine(int) call the subregion of the offset, or -1 if the offset was not in one of the given lineInfos |
| getSubregionStartOffset | | int getSubregionStartOffset(int line, int offset)(Code) | | Returns the start offset of the specified subregion of the specified
physical line.
Parameters:
line - The physical line number
Parameters:
offset - An offset |
| invalidateAll | | void invalidateAll()(Code) | | |
| invalidateChunksFrom | | void invalidateChunksFrom(int screenLine)(Code) | | |
| invalidateChunksFromPhys | | void invalidateChunksFromPhys(int physicalLine)(Code) | | |
| needFullRepaint | | boolean needFullRepaint()(Code) | | The needFullRepaint variable becomes true when the number of screen
lines in a physical line changes.
|
| recalculateVisibleLines | | void recalculateVisibleLines()(Code) | | Recalculate visible lines.
This is called when the TextArea geometry is changed or when the font is changed.
|
| scrollDown | | void scrollDown(int amount)(Code) | | |
| scrollUp | | void scrollUp(int amount)(Code) | | |
| subregionOffsetToX | | int subregionOffsetToX(int physicalLine, int offset)(Code) | | Converts an offset within a subregion into an x co-ordinate.
Parameters:
physicalLine - The physical line
Parameters:
offset - The offset |
| subregionOffsetToX | | static int subregionOffsetToX(LineInfo info, int offset)(Code) | | Converts an offset within a subregion into an x co-ordinate.
Parameters:
info - The line info object
Parameters:
offset - The offset |
| xToSubregionOffset | | int xToSubregionOffset(int physicalLine, int subregion, int x, boolean round)(Code) | | Converts an x co-ordinate within a subregion into an offset from the
start of that subregion.
Parameters:
physicalLine - The physical line number
Parameters:
subregion - The subregion; if -1, then this is the lastsubregion.
Parameters:
x - The x co-ordinate
Parameters:
round - Round up to next character if x is past the middle of acharacter? |
| xToSubregionOffset | | static int xToSubregionOffset(LineInfo info, int x, boolean round)(Code) | | Converts an x co-ordinate within a subregion into an offset from the
start of that subregion.
Parameters:
info - The line info object
Parameters:
x - The x co-ordinate
Parameters:
round - Round up to next character if x is past the middle of acharacter? |
|
|