python - pyside 通过样式表设置背景图像不起作用

Question

我正在尝试通过 pyside 设置 QGridLayout 小部件的背景图像(位于与应用程序相同的文件夹中)，但无济于事我已经查看了有关样式表的所有图、文档和论坛帖子，但仍然我不知道我做错了什么。

from PySide.QtCore import *
from PySide.QtGui import *
import sys

class Main(QWidget):

    def __init__(self, parent=None):
        super(Main, self).__init__(parent)

        j = 0
        pos =  [(0, 0), (0, 1), (0, 2), (0, 3),
                (1, 0), (1, 1), (1, 2), (1, 3),
                (2, 0), (2, 1), (2, 2), (2, 3),
                (3, 0), (3, 1), (3, 2), (3, 3),
                (4, 0), (4, 1), (4, 2), (4, 3),
                (5, 0), (5, 1), (5, 2), (5, 3)]

        grid  = QGridLayout(self)
        items = ["one", "Two", 'Three','four','five']

        for e in items:
            picture = ImageLabel("Book.png", self)
            picture.name = e
            picture.setFixedSize(128,128)
            picture.mousepos = str(picture.pos())
            picture.imageClicked.connect(self.anotherSlot)
            grid.addWidget(picture, pos[j][0], pos[j][1])
            j = j + 1
            picture.setToolTip('This is' + str(e) + ' widget')
            picture.imageHovered.connect(self.Item_Hovered)

        self.setStyleSheet("QGridLayout {background-image: url(./image.jpg) }");


    def anotherSlot(self):
        sender = self.sender()
        print "I clicked item " + str(sender.name)

    def Item_Hovered(self):
        sender = self.sender()
        print "I'm Hovering over " + str(sender.name)

class ImageLabel(QLabel):

    imageClicked = Signal(str) # can be other types (list, dict, object...)
    imageHovered = Signal(str)
    imageLeave   = Signal(str)

    def __init__(self, image, parent=None):
        super(ImageLabel, self).__init__(parent)        
        self.setPixmap(image)
        # self.setMouseTracking(True)

    def mousePressEvent(self, event):
        print "from ImageLabel.mousePressEvent()"
        self.imageClicked.emit("Image Clicked")

    def enterEvent(self, event):
        print "from ImageLabel.enterEvent()"
        self.imageHovered.emit("Hovering")

    def leaveEvent(self, event):
        print "from ImageLabel.leaveEvent()"
        self.imageLeave.emit("Hovering No More")


a = QApplication([])
m = Main()
m.show()
sys.exit(a.exec_())

如有任何建议，我们将不胜感激。

Answer 1

即使它有效，你也不会得到预期的结果，我实现正确背景绘制的唯一方法是重写paintEvent

tile = QtGui.QPixmap("x.png")

def paintEvent(self, pe):
    painter = QtGui.QPainter(self)
    painter.drawTiledPixmap(self.rect(), tile)
    super(Console, self).paintEvent(pe)

Console 是我的类 class Console(QtGui.QMainWindow):该示例适用于整个窗口。

我不确定 Painter 构造函数是否可以从 paintEvent 中移走

更新:看起来需要在每个paintEvent上创建QPainter

我找到了一种最简单的方法，无需覆盖 paintEvent

palette = QtGui.QPalette()
palette.setBrush(QtGui.QPalette.Background, tile)
self.setPalette(palette)