Files
pallectrum/electrum/gui/qt/fee_slider.py

108 lines
3.4 KiB
Python

import threading
from typing import Callable, Optional
from PyQt6.QtGui import QCursor
from PyQt6.QtCore import Qt
from PyQt6.QtWidgets import QSlider, QToolTip, QComboBox, QWidget
from electrum.i18n import _
from electrum.fee_policy import FeeMethod, FeePolicy
from electrum.network import Network
class FeeComboBox(QComboBox):
def __init__(self, fee_slider: 'FeeSlider'):
QComboBox.__init__(self)
self.fee_slider = fee_slider
self.addItems([x.name_for_GUI() for x in FeeMethod.slider_values()])
index = FeeMethod.slider_index_of_method(self.fee_slider.fee_policy.method)
self.setCurrentIndex(index)
self.currentIndexChanged.connect(self.on_fee_type)
self.help_msg = '\n'.join([
_('Feerate: the fee slider uses static feerate values'),
_('ETA: fee rate is based on average confirmation time estimates'),
_('Mempool based: fee rate is targeting a depth in the memory pool')
]
)
def on_fee_type(self, x):
method = FeeMethod.slider_values()[x]
self.fee_slider.fee_policy.set_method(method)
self.fee_slider.update(is_initialized=True)
class FeeSlider(QSlider):
def __init__(
self,
*,
parent: Optional[QWidget],
network: Network,
fee_policy: FeePolicy,
callback: Callable[[Optional[int]], None],
):
QSlider.__init__(self, Qt.Orientation.Horizontal, parent=parent)
self.network = network
self.callback = callback
self.fee_policy = fee_policy
self.lock = threading.RLock()
self.update(is_initialized=False)
self.valueChanged.connect(self.moved)
self._active = True
@property
def dyn(self) -> bool:
return self.fee_policy.use_dynamic_estimates
def get_policy(self) -> FeePolicy:
return self.fee_policy
def moved(self, pos):
with self.lock:
self.fee_policy.set_value_from_slider_pos(pos)
fee_rate = self.fee_policy.fee_per_kb(self.network)
tooltip = self.fee_policy.get_tooltip(self.network)
QToolTip.showText(QCursor.pos(), tooltip, self)
self.setToolTip(tooltip)
self.callback(fee_rate)
def update(self, *, is_initialized: bool = True):
with self.lock:
pos = self.fee_policy.get_slider_pos()
maxp = self.fee_policy.get_slider_max()
self.setRange(0, maxp)
self.setValue(pos)
if is_initialized:
self.moved(pos)
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