pyqt多个html页面,如何在PyQt中使项目视图呈现丰富(html)文本？

import sys

from PyQt4.QtCore import *

from PyQt4.QtGui import *

__data__ = [

"Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.",

"Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.",

"Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.",

"Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."

]

def get_html_box(text):

return '''

titolo {0} 88/88/8888, 88:88

'''.format(text)

class HTMLDelegate(QStyledItemDelegate):

def paint(self, painter, option, index):

model = index.model()

record = model.listdata[index.row()]

doc = QTextDocument(self)

doc.setHtml(get_html_box(record))

doc.setTextWidth(option.rect.width())

painter.save()

ctx = QAbstractTextDocumentLayout.PaintContext()

ctx.clip = QRectF(0, option.rect.top(), option.rect.width(), option.rect.height())

dl = doc.documentLayout()

dl.draw(painter, ctx)

painter.restore()

def sizeHint(self, option, index):

model = index.model()

record = model.listdata[index.row()]

doc = QTextDocument(self)

doc.setHtml(get_html_box(record))

doc.setTextWidth(option.rect.width())

return QSize(doc.idealWidth(), doc.size().height())

class MyListModel(QAbstractListModel):

def __init__(self, parent=None, *args):

super(MyListModel, self).__init__(parent, *args)

self.listdata = __data__

def rowCount(self, parent=QModelIndex()):

return len(self.listdata)

def data(self, index, role=Qt.DisplayRole):

return index.isValid() and QVariant(self.listdata[index.row()]) or QVariant()

class MyWindow(QWidget):

def __init__(self, *args):

super(MyWindow, self).__init__(*args)

# listview

self.lv = QListView()

self.lv.setModel(MyListModel(self))

self.lv.setItemDelegate(HTMLDelegate(self))

self.lv.setResizeMode(QListView.Adjust)

# layout

layout = QVBoxLayout()

layout.addWidget(self.lv)

self.setLayout(layout)

if __name__ == "__main__":

app = QApplication(sys.argv)

w = MyWindow()

w.show()

sys.exit(app.exec_())

元素的大小和位置没有正确计算我想,也许是因为我完全不了解原始代码中与样式相关的部分.

有人能帮我吗？

解决方法:

代码不符合所需的目标绘图区域(option.rect)：

ctx.clip = QRectF(0, option.rect.top(), option.rect.width(), option.rect.height())

上面剪辑了绘制到指定区域的QTextDocument部分.你真的想要翻译画家,使它开始在矩形的topLeft()绘画,然后延伸指定的宽度和高度.由于documentLayout()假设画家位于原点(即应该绘制的位置),这就是修复：

def paint(self, painter, option, index):

model = index.model()

record = model.listdata[index.row()]

doc = QTextDocument(self)

doc.setHtml(get_html_box(record))

doc.setTextWidth(option.rect.width())

ctx = QAbstractTextDocumentLayout.PaintContext()

painter.save()

painter.translate(option.rect.topLeft());

painter.setClipRect(option.rect.translated(-option.rect.topLeft()))

dl = doc.documentLayout()

dl.draw(painter, ctx)

painter.restore()

标签：python,pyqt,qlistview,qstyleditemdelegate

来源： https://codeday.me/bug/20190621/1258275.html