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Start refactoring the presenter to accommodate LinesYardstick

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This commit is contained in:
Antonio Scandurra
2015-09-18 11:29:08 +02:00
parent 96d4bdb173
commit 63db59e9ab
1 changed files with 31 additions and 19 deletions
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50
src/text-editor-presenter.coffee
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@@ -88,7 +88,7 @@ class TextEditorPresenter
@updateHiddenInputState() if @shouldUpdateHiddenInputState
@updateContentState() if @shouldUpdateContentState
@updateDecorations() if @shouldUpdateDecorations
@updateTilesState() if @shouldUpdateLinesState or @shouldUpdateLineNumbersState
@updateVisibleTilesState() if @shouldUpdateLinesState or @shouldUpdateLineNumbersState
@updateCursorsState() if @shouldUpdateCursorsState
@updateOverlaysState() if @shouldUpdateOverlaysState
@updateLineNumberGutterState() if @shouldUpdateLineNumberGutterState
@@ -340,38 +340,50 @@ class TextEditorPresenter
@tileForRow(@model.getScreenLineCount()), @tileForRow(@endRow)
)
getTilesCount: ->
Math.ceil(
(@getEndTileRow() - @getStartTileRow() + 1) / @tileSize
)
updateTilesState: ->
updateVisibleTilesState: ->
return unless @startRow? and @endRow? and @lineHeight?
visibleTiles = {}
zIndex = @getTilesCount() - 1
for startRow in [@getStartTileRow()..@getEndTileRow()] by @tileSize
endRow = Math.min(@model.getScreenLineCount(), startRow + @tileSize)
@updateTilesState([@startRow..@endRow])
tile = @state.content.tiles[startRow] ?= {}
tile.top = startRow * @lineHeight - @scrollTop
updateTilesState: (screenRows) ->
visibleTiles = {}
startRow = screenRows[0]
endRow = screenRows[screenRows.length - 1]
screenRowIndex = screenRows.length - 1
zIndex = 0
for tileStartRow in [@tileForRow(endRow)..@tileForRow(startRow)] by -@tileSize
tileEndRow = Math.min(@model.getScreenLineCount(), tileStartRow + @tileSize)
rowsWithinTile = []
while screenRowIndex >= 0
currentScreenRow = screenRows[screenRowIndex]
break if currentScreenRow < tileStartRow
rowsWithinTile.push(currentScreenRow)
screenRowIndex--
continue if rowsWithinTile.length is 0
tile = @state.content.tiles[tileStartRow] ?= {}
tile.top = tileStartRow * @lineHeight - @scrollTop
tile.left = -@scrollLeft
tile.height = @tileSize * @lineHeight
tile.display = "block"
tile.zIndex = zIndex
tile.highlights ?= {}
gutterTile = @lineNumberGutter.tiles[startRow] ?= {}
gutterTile.top = startRow * @lineHeight - @scrollTop
gutterTile = @lineNumberGutter.tiles[tileStartRow] ?= {}
gutterTile.top = tileStartRow * @lineHeight - @scrollTop
gutterTile.height = @tileSize * @lineHeight
gutterTile.display = "block"
gutterTile.zIndex = zIndex
@updateLinesState(tile, startRow, endRow) if @shouldUpdateLinesState
@updateLineNumbersState(gutterTile, startRow, endRow) if @shouldUpdateLineNumbersState
@updateLinesState(tile, tileStartRow, tileEndRow) if @shouldUpdateLinesState
@updateLineNumbersState(gutterTile, tileStartRow, tileEndRow) if @shouldUpdateLineNumbersState
visibleTiles[startRow] = true
zIndex--
visibleTiles[tileStartRow] = true
zIndex++
if @mouseWheelScreenRow? and @model.tokenizedLineForScreenRow(@mouseWheelScreenRow)?
mouseWheelTile = @tileForRow(@mouseWheelScreenRow)