Continuation of Last time
Custom widgets I will summarize this site roughly in Japanese.
Burning_widget.py
#!/usr/bin/python3
# -*- coding: utf-8 -*-
import sys
from PyQt5.QtWidgets import (QWidget, QSlider, QApplication,
QHBoxLayout, QVBoxLayout)
from PyQt5.QtCore import QObject, Qt, pyqtSignal
from PyQt5.QtGui import QPainter, QFont, QColor, QPen
class Communicate(QObject):
updateBW = pyqtSignal(int)
class BurningWidget(QWidget):
def __init__(self):
super().__init__()
self.initUI()
def initUI(self):
#Set minimum size for burning widget
self.setMinimumSize(1, 30)
#Set the position where the color arrives
self.value = 75
#Scale setting
self.num = [75, 150, 225, 300, 375, 450, 525, 600, 675]
def setValue(self, value):
self.value = value
def paintEvent(self, e):
qp = QPainter()
qp.begin(self)
self.drawWidget(qp)
qp.end()
def drawWidget(self, qp):
#Font settings
font = QFont('Serif', 7, QFont.Light)
qp.setFont(font)
#Burning widget sizing
size = self.size()
w = size.width()
h = size.height()
step = int(round(w / 10.0))
#The entire area to be colored
till = int(((w / 750.0) * self.value))
#Area colored in red
full = int(((w / 750.0) * 700))
#Color setting for areas colored in red
if self.value >= 700:
qp.setPen(QColor(255, 255, 255))
qp.setBrush(QColor(255, 255, 184))
qp.drawRect(0, 0, full, h)
qp.setPen(QColor(255, 175, 175))
qp.setBrush(QColor(255, 175, 175))
qp.drawRect(full, 0, till-full, h)
#Color settings other than the area colored in red
else:
qp.setPen(QColor(255, 255, 255))
qp.setBrush(QColor(255, 255, 184))
qp.drawRect(0, 0, till, h)
#Burning widget background
pen = QPen(QColor(20, 20, 20), 1,
Qt.SolidLine)
qp.setPen(pen)
qp.setBrush(Qt.NoBrush)
qp.drawRect(0, 0, w-1, h-1)
j = 0
#Write a scale
for i in range(step, 10*step, step):
qp.drawLine(i, 0, i, 5)
metrics = qp.fontMetrics()
fw = metrics.width(str(self.num[j]))
qp.drawText(i-fw/2, h/2, str(self.num[j]))
j = j + 1
class Example(QWidget):
def __init__(self):
super().__init__()
self.initUI()
def initUI(self):
sld = QSlider(Qt.Horizontal, self)
sld.setFocusPolicy(Qt.NoFocus)
sld.setRange(1, 750)
sld.setValue(75)
sld.setGeometry(30, 40, 150, 30)
self.c = Communicate()
self.wid = BurningWidget()
self.c.updateBW[int].connect(self.wid.setValue)
#Calling the changeValue function when moving the slider
sld.valueChanged[int].connect(self.changeValue)
hbox = QHBoxLayout()
hbox.addWidget(self.wid)
vbox = QVBoxLayout()
vbox.addStretch(1)
vbox.addLayout(hbox)
self.setLayout(vbox)
self.setGeometry(300, 300, 390, 210)
self.setWindowTitle('Burning widget')
self.show()
def changeValue(self, value):
#Send the current value of the slider
self.c.updateBW.emit(value)
self.wid.repaint()
if __name__ == '__main__':
app = QApplication(sys.argv)
ex = Example()
sys.exit(app.exec_())
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