두 개의 바를 사용하여 최대값, 최소값 조정하는 슬라이더 PyQt5 예제

두 개의 바를 사용하여 최대값, 최소값 조정하는 슬라이더 PyQt5  예제입니다.

 

2024. 8. 9 최초작성

from PyQt5.QtWidgets import QApplication, QWidget, QHBoxLayout, QVBoxLayout, QLabel from PyQt5.QtCore import Qt, pyqtSignal, QRectF from PyQt5.QtGui import QPainter, QColor, QPen class RangeSlider(QWidget):     valueChanged = pyqtSignal(int, int)     def __init__(self, values, parent=None):         super().__init__(parent)         self.values = values         self.first_position = 0         self.second_position = len(values) - 1         self.moving = None         self.handle_radius = 10         self.padding = self.handle_radius + 2  # 패딩 추가         self.setMinimumHeight(2 * (self.handle_radius + self.padding))     def mousePressEvent(self, event):         if event.buttons() & Qt.LeftButton:             x = event.pos().x()             distance_first = abs(self.positionToX(self.first_position) - x)             distance_second = abs(self.positionToX(self.second_position) - x)             if distance_first < distance_second:                 self.moving = "first"             else:                 self.moving = "second"     def mouseMoveEvent(self, event):         if event.buttons() & Qt.LeftButton:             x = event.pos().x()             position = self.xToPosition(x)             if self.moving == "first" and position < self.second_position:                 self.first_position = position             elif self.moving == "second" and position > self.first_position:                 self.second_position = position             self.update()             self.valueChanged.emit(self.values[self.first_position], self.values[self.second_position])     def mouseReleaseEvent(self, event):         self.moving = None     def paintEvent(self, event):         painter = QPainter(self)         painter.setRenderHint(QPainter.Antialiasing)         # 그리기 영역 조정         draw_area = self.width() - 2 * self.padding         start_x = self.padding         end_x = self.width() - self.padding         # Draw the line         pen = QPen(QColor(200, 200, 200))         pen.setWidth(4)         painter.setPen(pen)         painter.drawLine(start_x, self.height() // 2, end_x, self.height() // 2)         # Draw the handles         painter.setBrush(QColor(255, 255, 255))         painter.drawEllipse(QRectF(self.positionToX(self.first_position) - self.handle_radius,                             self.height() // 2 - self.handle_radius,                             self.handle_radius * 2, self.handle_radius * 2))         painter.drawEllipse(QRectF(self.positionToX(self.second_position) - self.handle_radius,                             self.height() // 2 - self.handle_radius,                             self.handle_radius * 2, self.handle_radius * 2))     def positionToX(self, position):         draw_area = self.width() - 2 * self.padding         return int(position * draw_area / (len(self.values) - 1)) + self.padding     def xToPosition(self, x):         draw_area = self.width() - 2 * self.padding         adjusted_x = max(self.padding, min(x, self.width() - self.padding)) - self.padding         return min(max(round(adjusted_x * (len(self.values) - 1) / draw_area), 0), len(self.values) - 1) class PriceRangeWidget(QWidget):     def __init__(self):         super().__init__()         self.values = [20, 35, 50, 75, 100, 150, 200, 250]  # 사전 정의된 값 리스트         self.initUI()     def initUI(self):         layout = QVBoxLayout()         layout.setContentsMargins(20, 20, 20, 20)         layout.setSpacing(10)         self.range_slider = RangeSlider(self.values)         self.range_slider.valueChanged.connect(self.updateLabels)         self.min_label = QLabel(f'최소: {self.values[0]}만원')         self.max_label = QLabel(f'최대: {self.values[-1]}만원')         font = self.min_label.font()         font.setPointSize(12)         self.min_label.setFont(font)         self.max_label.setFont(font)         layout.addWidget(self.min_label)         layout.addWidget(self.range_slider)         layout.addWidget(self.max_label)         self.setLayout(layout)         self.setWindowTitle('가격 범위 설정')         self.setMinimumSize(400, 150)     def updateLabels(self, min_val, max_val):         self.min_label.setText(f'최소: {min_val}만원')         self.max_label.setText(f'최대: {max_val}만원') if __name__ == '__main__':     import sys     app = QApplication(sys.argv)     ex = PriceRangeWidget()     ex.show()     sys.exit(app.exec_())