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Implemented scroll acceleration

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Mark Qvist 2026-05-06 13:41:46 +02:00
parent 2fda909da7
commit 137b64e677
1 changed files with 22 additions and 3 deletions
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25
nomadnet/vendor/Scrollable.py vendored
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@ -9,8 +9,10 @@
# GNU General Public License for more details
# http://www.gnu.org/licenses/gpl-3.0.txt
import time
import urwid
from urwid.widget import BOX, FIXED, FLOW
from collections import deque
# Scroll actions
SCROLL_LINE_UP = 'line up'
@ -354,6 +356,10 @@ class ScrollBar(urwid.WidgetDecoration):
self._sb_maxrow = 0
self._sb_dragging = False
self._sb_drag_offset = 0
self._accel = 1
self._sevt_interval = 0
self._sevt_start = 0
self._sfreq_deque = deque(maxlen=5)
def render(self, size, focus=False):
maxcol, maxrow = size
@ -505,12 +511,25 @@ class ScrollBar(urwid.WidgetDecoration):
handled = ow.mouse_event(ow_size, event, button, col, row, focus)
if not handled and hasattr(ow, 'set_scrollpos'):
step = 3
self._sevt_interval = time.time()-self._sevt_start
if self._sevt_interval > 0.3: self._sevt_start = 0; self._accel = 1; self._sfreq_deque.clear()
if self._sevt_start == 0: self._sevt_start = time.time()
if self._sevt_interval > 0:
sevt_freq = 1/self._sevt_interval
self._sfreq_deque.append(sevt_freq)
freq_smth = sum(self._sfreq_deque)/len(self._sfreq_deque)
if len(self._sfreq_deque) >= self._sfreq_deque.maxlen:
if freq_smth > 25.0: self._accel = max(self._accel, 3)
elif freq_smth > 12.0: self._accel = max(self._accel, 2)
else: self._accel = max(self._accel, 1)
# import RNS; RNS.log(f"a={self._accel} s={RNS.prettyfrequency(freq_smth)} f={RNS.prettyfrequency(sevt_freq)}", RNS.LOG_CRITICAL)
step = self._accel
if button == 4: # scroll wheel up
pos = ow.get_scrollpos(ow_size)
newpos = pos - step
if newpos < 0:
newpos = 0
if newpos < 0: newpos = 0
ow.set_scrollpos(newpos)
return True
elif button == 5: # scroll wheel down