有没有办法让我测量 WPF flowdoc 中块/部分的高度？

发布于 2024-11-30 23:38:33 字数 660 浏览 0 评论 0原文

所以我正在逐段构建一个流程文档，我想知道是否有一种方法可以测量给定时间块的高度。

我的代码看起来像这样：

section s = new section();

block b1 = new Block(new Run("Text here"));//add height to total block height
block b2 = new Block(new Run("Text here"));//add height to total block height
block b3 = new Block(new Run("Text here"));//add height to total block height
block b4 = new Block(new Run("Text here"));//add height to total block height

s.blocks.add(b1);s.Blocks.Add(b2)...;s.blocks.add(b4)
//measure section here

FlowDocument f = new FlowDocument;

f.Blocks.Add(s);

我可以在添加每个段落后测量它，并保持运行计数，

或者

我可以在添加所有块后测量整个部分。

是否可以？

谢谢！

原文

So I am building a flowdocument paragraph by paragraph, and I was wondering if there was a way that I could measure the height of a block at a given time.

my code looks something like this:

section s = new section();

block b1 = new Block(new Run("Text here"));//add height to total block height
block b2 = new Block(new Run("Text here"));//add height to total block height
block b3 = new Block(new Run("Text here"));//add height to total block height
block b4 = new Block(new Run("Text here"));//add height to total block height

s.blocks.add(b1);s.Blocks.Add(b2)...;s.blocks.add(b4)
//measure section here

FlowDocument f = new FlowDocument;

f.Blocks.Add(s);

I could either measure each paragraph after it is added, and keep a running tally,

I could measure the whole section, after all the blocks have been added to it.

is it possible?

thanks!

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遥远的她 2024-12-07 23:38:33

FlowDocument 模型基于 FrameworkContentElement 而不是 FrameworkElement，不会继承 Visibility、Height 和 Width 设置等优点。

我发现强制测量的唯一方法（仅当没有其他方法时）是使用 BlockUIContainer 将 UIElements 注入文档中。然后可以在运行时测量指定的 UIElement。老实说，这是一个有点丑陋的黑客，但到目前为止我还没有找到其他方法。

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握住我的手 2024-12-07 23:38:33

你可以这样做。

Block b1 = new Block(new Run("Text here"));
double width = .0;

Rect r = b1.ElementStart.GetCharacterRect(LogicalDirection.Forward);

//add height to total block height
width += r.Height;

甚至可以使用相同的方法来获取 Section 的高度。我仍在寻找一种更快的解决方案，但这个效果很好。如果我发现任何其他情况，我会随时通知您。 :)

You could do it like this.

Block b1 = new Block(new Run("Text here"));
double width = .0;

Rect r = b1.ElementStart.GetCharacterRect(LogicalDirection.Forward);

//add height to total block height
width += r.Height;

The same method can be used to get the height of even the Section. I'm still searching for a faster solution though, but this one works just fine. I'll keep you posted if I find anything else. :)

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