Python 如何设置像素贴图的最大宽度和高度?
我有一个显示图像的窗口,如下所示:Python 如何设置像素贴图的最大宽度和高度?,python,qt,pyqt,pyside,pixmap,Python,Qt,Pyqt,Pyside,Pixmap,我有一个显示图像的窗口,如下所示: import sys from PyQt4 import QtGui class Window(QtGui.QWidget): def __init__(self): super(Window, self).__init__() self.initUI() def initUI(self): pixmap = QtGui.QPixmap("image.jpg") pix
import sys
from PyQt4 import QtGui
class Window(QtGui.QWidget):
def __init__(self):
super(Window, self).__init__()
self.initUI()
def initUI(self):
pixmap = QtGui.QPixmap("image.jpg")
pixmapShow = QtGui.QLabel(self)
pixmapShow.setPixmap(pixmap)
grid = QtGui.QGridLayout()
grid.setSpacing(10)
grid.addWidget(pixmapShow, 0, 1)
self.setGeometry(400, 400, 400, 400)
self.setWindowTitle('Review')
self.show()
if __name__ == '__main__':
app = QtGui.QApplication(sys.argv)
ex = Window()
sys.exit(app.exec_())
如何设置显示像素贴图所允许的最大宽度和最大高度
- 如果图像宽于350像素或高于200像素,则应缩小图像,直到一维等于350像素,并保持纵横比
- 如果图像小于350x200,则不会发生缩放
class PixmapContainer(QtGui.QLabel):
def __init__(self, pixmap, parent=None):
super(PixmapContainer, self).__init__(parent)
self._pixmap = QtGui.QPixmap(pixmap)
self.setMinimumSize(1, 1) # needed to be able to scale down the image
def resizeEvent(self, event):
w = min(self.width(), self._pixmap.width())
h = min(self.height(), self._pixmap.height())
self.setPixmap(self._pixmap.scaled(w, h, QtCore.Qt.KeepAspectRatio))
那么在你的代码中,它是非常直截了当的:
def initUI(self):
pixmapShow = PixmapContainer("image.jpg")
pixmapShow.setMaximumSize(350, 200)
grid = QtGui.QGridLayout(self)
grid.setSpacing(10)
grid.addWidget(pixmapShow, 0, 1)
self.setGeometry(400, 400, 400, 400)
self.setWindowTitle('Review')
self.show()