diff options
| -rw-r--r-- | content_scripts/scroller.coffee | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/content_scripts/scroller.coffee b/content_scripts/scroller.coffee index 1e5bac65..ab9be22c 100644 --- a/content_scripts/scroller.coffee +++ b/content_scripts/scroller.coffee @@ -97,13 +97,13 @@ CoreScroller = @keyIsDown = false @time += 1 - # Calibration fudge factors for continuous scrolling. The calibration value starts at 1.0. We then - # increase it (until it exceeds @maxCalibration) if we guess that the scroll is too slow, or decrease it - # (until it is less than @minCalibration) if we guess that the scroll is too fast. The cutoff point for - # which guess we make is @calibrationBoundary. We require: 0 < @minCalibration <= 1 <= @maxCalibration. - @minCalibration = 0.5 # Controls how much we're willing to slow scrolls down; smaller => more slow down. - @maxCalibration = 1.6 # Controls how much we're willing to speed scrolls up; bigger => more speed up. - @calibrationBoundary = 150 # Boundary between scrolls which are considered too slow, and those too fast. + # Calibration fudge factors for continuous scrolling. The calibration value starts at 1.0. We then + # increase it (until it exceeds @maxCalibration) if we guess that the scroll is too slow, or decrease it + # (until it is less than @minCalibration) if we guess that the scroll is too fast. The cutoff point for + # which guess we make is @calibrationBoundary. We require: 0 < @minCalibration <= 1 <= @maxCalibration. + minCalibration: 0.5 # Controls how much we're willing to slow scrolls down; smaller => more slow down. + maxCalibration: 1.6 # Controls how much we're willing to speed scrolls up; bigger => more speed up. + calibrationBoundary: 150 # Boundary between scrolls which are considered too slow, and those too fast. # Scroll element by a relative amount (a number) in some direction. scroll: (element, direction, amount) -> @@ -150,8 +150,8 @@ CoreScroller = # distinct keypresses. For continuous scrolls, some scrolls are too slow, and others too fast. Here, we # speed up the slower scrolls, and slow down the faster scrolls. if isMyKeyStillDown() and 50 <= totalElapsed and @minCalibration <= calibration <= @maxCalibration - calibration *= 1.05 if 1.05 * calibration * amount <= @calibrationBoundary # Speed up slow scrolls. - calibration *= 0.95 if @calibrationBoundary <= 0.95 * calibration * amount # Slow down fast scrolls. + calibration *= 1.05 if 1.05 * calibration * amount < @calibrationBoundary # Speed up slow scrolls. + calibration *= 0.95 if @calibrationBoundary < 0.95 * calibration * amount # Slow down fast scrolls. # Calculate the initial delta, rounding up to ensure progress. Then, adjust delta to account for the # current scroll state. |