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Factor position translation into a single method on LineMap

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This commit is contained in:
Nathan Sobo
2012-02-29 12:36:04 -07:00
parent 634b90d17a
commit c53438d0e5
1 changed files with 19 additions and 26 deletions
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45
src/atom/line-map.coffee
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@@ -100,34 +100,10 @@ class LineMap
@screenLineCount() - 1
screenPositionForBufferPosition: (bufferPosition) ->
bufferPosition = Point.fromObject(bufferPosition)
bufferDelta = new Point
screenDelta = new Point
for lineFragment in @lineFragments
nextDelta = bufferDelta.add(lineFragment.bufferDelta)
break if nextDelta.isGreaterThan(bufferPosition)
bufferDelta = nextDelta
screenDelta = screenDelta.add(lineFragment.screenDelta)
remainingBufferColumn = bufferPosition.column - bufferDelta.column
additionalScreenColumn = Math.max(0, Math.min(remainingBufferColumn, lineFragment.lengthForClipping()))
new Point(screenDelta.row, screenDelta.column + additionalScreenColumn)
@translatePosition('bufferDelta', 'screenDelta', bufferPosition)
bufferPositionForScreenPosition: (screenPosition) ->
screenPosition = Point.fromObject(screenPosition)
bufferDelta = new Point
screenDelta = new Point
for lineFragment in @lineFragments
nextDelta = screenDelta.add(lineFragment.screenDelta)
break if nextDelta.isGreaterThan(screenPosition)
screenDelta = nextDelta
bufferDelta = bufferDelta.add(lineFragment.bufferDelta)
column = bufferDelta.column + (screenPosition.column - screenDelta.column)
new Point(bufferDelta.row, column)
@translatePosition('screenDelta', 'bufferDelta', screenPosition)
screenRangeForBufferRange: (bufferRange) ->
start = @screenPositionForBufferPosition(bufferRange.start)
@@ -139,6 +115,23 @@ class LineMap
end = @bufferPositionForScreenPosition(screenRange.end)
new Range(start, end)
translatePosition: (sourceDeltaType, targetDeltaType, sourcePosition) ->
sourcePosition = Point.fromObject(sourcePosition)
sourceDelta = new Point
targetDelta = new Point
for lineFragment in @lineFragments
nextSourceDelta = sourceDelta.add(lineFragment[sourceDeltaType])
break if nextSourceDelta.isGreaterThan(sourcePosition)
sourceDelta = nextSourceDelta
targetDelta = targetDelta.add(lineFragment[targetDeltaType])
unless lineFragment.isAtomic
targetDelta.column += Math.max(0, sourcePosition.column - sourceDelta.column)
targetDelta
clipScreenPosition: (screenPosition, options) ->
wrapBeyondNewlines = options.wrapBeyondNewlines ? false
wrapAtSoftNewlines = options.wrapAtSoftNewlines ? false