Ich habe mir versuchsweise ein Programm mit 4 Fortschrittsbalken für jede Mausbewegungsrichtung geschrieben. Dabei kommt es dazu, dass die Fortschrittsbalken bei Mausbewegungen schnell gen 100 % wandern, aber manche Balken über mehrere Sekunden bei 99 % verharren, wenn man die Maus (zu) schnell im Kreis bewegt. Bei langsamerer Mausbewegung erreichen alle Balken mühelos 100 %.
Wie kann man das Problem beheben?
main.py
Code: Alles auswählen
import sys
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QCursor
from PyQt5.QtWidgets import QApplication, QMainWindow
from PyQt5.uic import loadUi
class MainWindow(QMainWindow):
def __init__(self, parent=None):
super().__init__(parent)
loadUi("mainwindow.ui", self)
self.showMaximized()
self.setMouseTracking(True)
self.centralWidget().setAttribute(Qt.WA_TransparentForMouseEvents)
self._old_x = QCursor.pos().x()
self._old_y = QCursor.pos().y()
def _update_bar(self, progress_bar, delta):
current_value = progress_bar.value()
new_value = current_value + delta
progress_bar.setValue(new_value)
def mouseMoveEvent(self, event):
new_x = event.x()
new_y = event.y()
if new_x > self._old_x:
self._update_bar(self.progressBar_x_plus, new_x - self._old_x)
if new_x < self._old_x:
self._update_bar(self.progressBar_x_minus, self._old_x - new_x)
if new_y > self._old_y:
self._update_bar(self.progressBar_y_plus, new_y - self._old_y)
if new_y < self._old_y:
self._update_bar(self.progressBar_y_minus, self._old_y - new_y)
self._old_x = new_x
self._old_y = new_y
def main():
app = QApplication(sys.argv)
main_window = MainWindow()
main_window.show()
sys.exit(app.exec_())
if __name__ == "__main__":
main()
mainwindow.ui
Code: Alles auswählen
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>MainWindow</class>
<widget class="QMainWindow" name="MainWindow">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>800</width>
<height>300</height>
</rect>
</property>
<property name="windowTitle">
<string>Mauszeiger</string>
</property>
<widget class="QWidget" name="centralwidget">
<layout class="QGridLayout" name="gridLayout_2">
<item row="0" column="0">
<layout class="QGridLayout" name="gridLayout">
<item row="0" column="0">
<widget class="QLabel" name="label_x_plus">
<property name="text">
<string>X+</string>
</property>
<property name="alignment">
<set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
</property>
</widget>
</item>
<item row="0" column="1">
<widget class="QProgressBar" name="progressBar_x_plus">
<property name="maximum">
<number>1000</number>
</property>
<property name="value">
<number>0</number>
</property>
</widget>
</item>
<item row="1" column="0">
<widget class="QLabel" name="label_x_minus">
<property name="text">
<string>X-</string>
</property>
<property name="alignment">
<set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
</property>
</widget>
</item>
<item row="1" column="1">
<widget class="QProgressBar" name="progressBar_x_minus">
<property name="maximum">
<number>1000</number>
</property>
<property name="value">
<number>0</number>
</property>
</widget>
</item>
<item row="2" column="0">
<widget class="QLabel" name="label_y_plus">
<property name="text">
<string>Y+</string>
</property>
<property name="alignment">
<set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
</property>
</widget>
</item>
<item row="2" column="1">
<widget class="QProgressBar" name="progressBar_y_plus">
<property name="maximum">
<number>1000</number>
</property>
<property name="value">
<number>0</number>
</property>
</widget>
</item>
<item row="3" column="0">
<widget class="QLabel" name="label_y_minus">
<property name="text">
<string>Y-</string>
</property>
<property name="alignment">
<set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
</property>
</widget>
</item>
<item row="3" column="1">
<widget class="QProgressBar" name="progressBar_y_minus">
<property name="maximum">
<number>1000</number>
</property>
<property name="value">
<number>0</number>
</property>
</widget>
</item>
</layout>
</item>
</layout>
</widget>
<widget class="QMenuBar" name="menubar">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>800</width>
<height>28</height>
</rect>
</property>
</widget>
<widget class="QStatusBar" name="statusbar"/>
</widget>
<resources/>
<connections/>
</ui>
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