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Only re-render the gutter when we render new lines

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Nathan Sobo
2012-05-29 15:12:11 -06:00
parent 3e26386f98
commit 0ef4c7e172
2 changed files with 19 additions and 11 deletions
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9
src/app/editor.coffee
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@@ -306,15 +306,13 @@ class Editor extends View
renderFrom = Math.max(0, firstVisibleScreenRow - @lineOverdraw)
renderTo = Math.min(@getLastScreenRow(), lastVisibleScreenRow + @lineOverdraw)
@gutter.renderLineNumbers(renderFrom, renderTo)
if firstVisibleScreenRow < @firstRenderedScreenRow
@removeLineElements(Math.max(@firstRenderedScreenRow, renderTo + 1), @lastRenderedScreenRow)
@lastRenderedScreenRow = renderTo
newLines = @buildLineElements(renderFrom, Math.min(@firstRenderedScreenRow - 1, renderTo))
@insertLineElements(renderFrom, newLines)
@firstRenderedScreenRow = renderFrom
adjustPadding = true
renderedLines = true
if lastVisibleScreenRow > @lastRenderedScreenRow
if 0 <= @firstRenderedScreenRow < renderFrom
@@ -324,9 +322,10 @@ class Editor extends View
newLines = @buildLineElements(startRowOfNewLines, renderTo)
@insertLineElements(startRowOfNewLines, newLines)
@lastRenderedScreenRow = renderTo
adjustPadding = true
renderedLines = true
if adjustPadding
if renderedLines
@gutter.renderLineNumbers(renderFrom, renderTo)
paddingTop = @firstRenderedScreenRow * @lineHeight
@visibleLines.css('padding-top', paddingTop)
@gutter.lineNumbers.css('padding-top', paddingTop)