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from electrum.i18n import _
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import QSlider, QToolTip
import threading
class FeeSlider(QSlider):
def __init__(self, window, config, callback):
QSlider.__init__(self, Qt.Horizontal)
self.config = config
self.window = window
self.callback = callback
self.dyn = False
self.lock = threading.RLock()
self.update()
self.valueChanged.connect(self.moved)
self._active = True
def moved(self, pos):
with self.lock:
if self.dyn:
fee_rate = self.config.depth_to_fee(pos) if self.config.use_mempool_fees() else self.config.eta_to_fee(pos)
else:
fee_rate = self.config.static_fee(pos)
tooltip = self.get_tooltip(pos, fee_rate)
QToolTip.showText(QCursor.pos(), tooltip, self)
self.setToolTip(tooltip)
self.callback(self.dyn, pos, fee_rate)
def get_tooltip(self, pos, fee_rate):
mempool = self.config.use_mempool_fees()
target, estimate = self.config.get_fee_text(pos, self.dyn, mempool, fee_rate)
if self.dyn:
return _('Target') + ': ' + target + '\n' + _('Current rate') + ': ' + estimate
else:
return _('Fixed rate') + ': ' + target + '\n' + _('Estimate') + ': ' + estimate
def update(self):
with self.lock:
self.dyn = self.config.is_dynfee()
mempool = self.config.use_mempool_fees()
maxp, pos, fee_rate = self.config.get_fee_slider(self.dyn, mempool)
self.setRange(0, maxp)
self.setValue(pos)
tooltip = self.get_tooltip(pos, fee_rate)
self.setToolTip(tooltip)
def activate(self):
self._active = True
self.setStyleSheet('')
def deactivate(self):
self._active = False
# TODO it would be nice to find a platform-independent solution
# that makes the slider look as if it was disabled
self.setStyleSheet(
"""
QSlider::groove:horizontal {
border: 1px solid #999999;
height: 8px;
background: qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 #B1B1B1, stop:1 #B1B1B1);
margin: 2px 0;
}
QSlider::handle:horizontal {
background: qlineargradient(x1:0, y1:0, x2:1, y2:1, stop:0 #b4b4b4, stop:1 #8f8f8f);
border: 1px solid #5c5c5c;
width: 12px;
margin: -2px 0;
border-radius: 3px;
}
"""
)
def is_active(self):
return self._active