如何使用 QGraphicsWebView？

发布于 2024-09-07 16:20:36 字数 670 浏览 2 评论 0原文

我想在委托内使用 QGraphicWebView 来渲染 QTableView 单元格，但我只是不知道如何处理 Paint() 方法所需的 QStyleOptionGraphicsItem 参数。如何构建它/我应该在哪里检索它？我正在使用此代码作为参考，所以paint()方法应该是这样的：

def paint(self, painter, option, index):
    web = QGraphicsWebView()
    web.setHtml(some_html_text)
    web.page().viewportSize().setWidth(option.rect.width())
    painter.save()
    painter.translate(option.rect.topLeft());
    painter.setClipRect(option.rect.translated(-option.rect.topLeft()))
    web.paint(painter, ??????) # what here?
    painter.restore()

有什么建议吗？

原文

I want to use a QGraphicWebView inside a delegate to render a QTableView cell, but I just don't know what to do with the QStyleOptionGraphicsItem parameter the paint() method requires. How to build it up / where should I retrieve it?
I'm using this code as reference, so the paint() method should be something like this:

def paint(self, painter, option, index):
    web = QGraphicsWebView()
    web.setHtml(some_html_text)
    web.page().viewportSize().setWidth(option.rect.width())
    painter.save()
    painter.translate(option.rect.topLeft());
    painter.setClipRect(option.rect.translated(-option.rect.topLeft()))
    web.paint(painter, ??????) # what here?
    painter.restore()

Any advice?

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

拔了角的鹿 2024-09-14 16:20:36

我假设您并不真正需要 QGraphicsWebView 并且 QWebView 就足够了。

请务必记住，您不需要自己调用 QWidget::paintEvent()。考虑到这一限制，您将需要使用一个辅助类，该类可以在绘画设备上渲染或使用给定的画家进行渲染。 QWebFrame 有一个这样的方法，其形式为渲染函数。根据您链接到的示例，以下内容应该有效：

class HTMLDelegate(QStyledItemDelegate):

    def paint(self, painter, option, index):
        model = index.model()
        record = model.listdata[index.row()]

        # don't instantiate every time, so move this out
        # to the class level
        web = QWebView() 
        web.setHtml(record)
        web.page().viewportSize().setWidth(option.rect.width())

        painter.save()
        painter.translate(option.rect.topLeft());
        painter.setClipRect(option.rect.translated(-option.rect.topLeft()))
        web.page().mainFrame().render(painter)
        painter.restore()

I'll assume that you don't really need QGraphicsWebView and that QWebView is sufficient.

It's important to keep in mind that you're not expected to call QWidget::paintEvent() yourself. Given that constraint, you'll want to use a helper class that can render on a paint device or render using a given painter. QWebFrame has one such method in the form of its render function. Based off of your linked-to example, the following should work:

class HTMLDelegate(QStyledItemDelegate):

    def paint(self, painter, option, index):
        model = index.model()
        record = model.listdata[index.row()]

        # don't instantiate every time, so move this out
        # to the class level
        web = QWebView() 
        web.setHtml(record)
        web.page().viewportSize().setWidth(option.rect.width())

        painter.save()
        painter.translate(option.rect.topLeft());
        painter.setClipRect(option.rect.translated(-option.rect.topLeft()))
        web.page().mainFrame().render(painter)
        painter.restore()

回复收藏 0 原文

~没有更多了~