QGridLayout中的QScrollArea
QGridLayout中的QScrollArea
提问于 2020-12-29 13:41:54
在PySide6中(与PySide2和PyQt5相同)
我想把QMainWindow分成四个部分，每个部分都有一个用于显示image.Here的QScrollArea，这是最小的可重现示例。
from PySide6.QtCore import *
from PySide6.QtGui import *
from PySide6.QtWidgets import *
import sys
import numpy as np
class MainWindow(QMainWindow):
def __init__(self):
super(MainWindow, self).__init__()
self.setupUi()
def setupUi(self, *args,**kwargs):
self.mainWindow = MainWindow
self.resize(800,600)
self.load()
def load(self):
internalWidget = QWidget()
gridLayout = QGridLayout(internalWidget)
internalWidget.setLayout(gridLayout)
self.setCentralWidget(internalWidget)
# row, column, rowSpan, columnSpan
config = [
[0, 0, 1, 1],
[0, 1, 1, 1],
[1, 0, 1, 1],
[1, 1, 1, 1],
]
for row, column, rowSpan, columnSpan in config:
# create scrollArea
scrollArea = QScrollArea()
scrollArea.setSizePolicy(QSizePolicy.Expanding,QSizePolicy.Expanding)
scrollArea.setViewportMargins(0,0,0,0)
scrollArea.setWidgetResizable(True)
gridLayout.setContentsMargins(0,0,0,0)
#########################random pixmap#####################################
arr = np.random.randint(0,255,(200+row*200,200+column*100))# random a image
if [row, column, rowSpan, columnSpan] == [0, 1, 1, 1]:
arr = np.random.randint(0,255,(1000,1000))
image = QImage(arr[:], arr.shape[1], arr.shape[0], arr.shape[1] * 3, QImage.Format_RGB888)
pixmap = QPixmap.fromImage(image)
###########################################################################
label = QLabel()
label.setPixmap(pixmap)
scrollArea.setWidget(label)
scrollArea.setAlignment(Qt.AlignCenter)
label.show()
gridLayout.addWidget(scrollArea, row, column, rowSpan, columnSpan, alignment=Qt.AlignCenter)
scrollArea.show()
if __name__ == "__main__":
app = QApplication(sys.argv)
window = MainWindow()
window.show()
sys.exit(app.exec_())但当我运行它时，只有当图像足够大时，QScrollArea才能填充QGridLayout网格。如果图像小于栅格，则QScrollArea将变为与图像相同的大小(小于栅格)。
快照：
如何在不调整图像大小的情况下让每个QScrollArea始终填充网格？(并不是说每个QScrollArea的大小不同)
回答 1
Stack Overflow用户
发布于 2020-12-29 14:24:56
如果您希望每个QScrollArea占用相同的空间，则在每行和每列中设置相同的拉伸因子：
import random
import sys
from PySide6.QtCore import QSize, Qt
from PySide6.QtGui import QColor, QPixmap
from PySide6.QtWidgets import (
QApplication,
QGridLayout,
QLabel,
QMainWindow,
QScrollArea,
QWidget,
)
class MainWindow(QMainWindow):
def __init__(self):
super(MainWindow, self).__init__()
self.setupUi()
def setupUi(self):
self.resize(800, 600)
self.load()
def load(self):
internalWidget = QWidget()
gridLayout = QGridLayout(internalWidget)
gridLayout.setContentsMargins(0, 0, 0, 0)
self.setCentralWidget(internalWidget)
config = [
[0, 0],
[0, 1],
[1, 0],
[1, 1],
]
for row, column in config:
scrollArea = QScrollArea(widgetResizable=True)
scrollArea.setViewportMargins(0, 0, 0, 0)
pixmap = QPixmap(QSize(*random.sample(range(0, 500), 2)))
pixmap.fill(QColor(*random.sample(range(0, 255), 3)))
label = QLabel(alignment=Qt.AlignCenter)
label.setPixmap(pixmap)
scrollArea.setWidget(label)
gridLayout.addWidget(scrollArea, row, column)
gridLayout.setColumnStretch(0, 1)
gridLayout.setColumnStretch(1, 1)
gridLayout.setRowStretch(0, 1)
gridLayout.setRowStretch(1, 1)
if __name__ == "__main__":
app = QApplication(sys.argv)
window = MainWindow()
window.show()
sys.exit(app.exec_())页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/65487773
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