wpf 在嵌套样式中设置 RenderTransform

Setting RenderTransform in a nested style

提问by Grault

I'm using .Net 3.5 on Windows 8, with the default Aero theme.

我在 Windows 8 上使用 .Net 3.5，默认 Aero 主题。

This was supposed to be an answer to Scale Checkbox without scaling contentbut it didn't work as easily as I expected. I'm trying to:

这应该是不缩放内容的 Scale Checkbox的答案，但它并没有像我预期的那样容易。我试图：

1. scale the box in a checkbox control
2. in a style, so I can apply the change to all checkboxes (or only some)
3. independently of its text, with no need to compensate.

1. 缩放复选框控件中的框
2. 以一种样式，因此我可以将更改应用于所有复选框（或仅某些）
3. 独立于其文本，无需补偿。

I have a UserControlwith this Resources:

我有一个带有此资源的UserControl：

<UserControl.Resources>
    <ResourceDictionary>
        <!-- ... -->

        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="../Resources/CheckBoxStyle.xaml" />
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
</UserControl.Resources>

Resources/CheckBoxStyle.xamlis this:

资源/CheckBoxStyle.xaml是这样的：

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:primitives="clr-namespace:System.Windows.Controls.Primitives;assembly=PresentationFramework">
    <Style TargetType="{x:Type CheckBox}">
        <Style.Resources>
            <Style TargetType="{x:Type BulletDecorator}">
                <Setter Property="RenderTransform">
                    <Setter.Value>
                        <ScaleTransform ScaleX="2" ScaleY="2"/>
                    </Setter.Value>
                </Setter>
            </Style>
        </Style.Resources>
    </Style>
</ResourceDictionary>

The primitivesnamespaceis in case whatever I settle on needs to know what BulletDecorator is.

该primitives命名空间是什么我看中需要知道BulletDecorator是什么情况。

I found BulletDecoratorin the Aero theme for .Net 3.5 from here, behind the "Default WPF Themes" link, per this answer.

我从这里找到了 .Net 3.5 的 Aero 主题中的BulletDecorator，在“默认 WPF 主题”链接后面，根据这个答案。

I'm seeing no difference in the size of my checkbox boxes. I don't think I grabbed the wrong element type from the theme, but what else could be happening?

我发现复选框的大小没有区别。我不认为我从主题中获取了错误的元素类型，但还会发生什么？

Edit 1:

编辑1：

BulletDecorator contains the checkbox's content anyway, so I tried dropping requirement #3. Now I have a huge box and huge text, and want to shrink the text back down. Here is CheckBoxStyle.xaml:

BulletDecorator 无论如何都包含复选框的内容，所以我尝试删除要求 #3。现在我有一个巨大的盒子和巨大的文本，并且想要缩小文本。这是CheckBoxStyle.xaml：

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:primitives="clr-namespace:System.Windows.Controls.Primitives;assembly=PresentationFramework">
    <Style TargetType="{x:Type CheckBox}">
        <Style.Resources>
            <Style TargetType="{x:Type ContentControl}">
                <Setter Property="Template">
                    <Setter.Value>
                        <ControlTemplate TargetType="{x:Type ContentControl}">
                            <ContentPresenter>
                                <ContentPresenter.LayoutTransform>
                                    <ScaleTransform ScaleX="0.5" ScaleY="0.5" />
                                </ContentPresenter.LayoutTransform>
                            </ContentPresenter>
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
            </Style>
        </Style.Resources>
        <Setter Property="LayoutTransform">
            <Setter.Value>
                <ScaleTransform ScaleX="2" ScaleY="2"/>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>

回答by Grault

I found a solution, although it's not perfect. A better answer would still be accepted.

我找到了一个解决方案，虽然它并不完美。更好的答案仍然会被接受。

I used Snoopto determine that the element I'm concerned with is already a ContentPresenter. It contains a TextBlock, but for some reason that can't be styled (and it's shown in parentheses in Snoop's hierarchy). Here's my resulting CheckBoxStyle.xaml:

我使用Snoop来确定我关心的元素已经是一个 ContentPresenter。它包含一个 TextBlock，但由于某种原因无法设置样式（并且它显示在 Snoop 层次结构的括号中）。这是我生成的CheckBoxStyle.xaml：

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:primitives="clr-namespace:System.Windows.Controls.Primitives;assembly=PresentationFramework">
    <Style TargetType="{x:Type CheckBox}">
        <Style.Resources>
            <Style TargetType="{x:Type ContentPresenter}">
                <Setter Property="LayoutTransform">
                    <Setter.Value>
                        <ScaleTransform ScaleX="0.5" ScaleY="0.5" />
                    </Setter.Value>
                </Setter>
            </Style>
        </Style.Resources>
        <Setter Property="LayoutTransform">
            <Setter.Value>
                <ScaleTransform ScaleX="2" ScaleY="2"/>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>