如何使用字符串值代替 WPF Tickbar 上的刻度? [英] How to use string values in place of ticks on WPF Tickbar?

问题描述

我希望自定义基本 WPF 的外观 TickBar.我想知道是否有一种使用控件模板的简单方法来做到这一点:

I wish to customize the appearance of the basic WPF TickBar. I was wondering if there was a simple way to do this using a control template:

我希望用数字代替刻度条上的刻度.我希望数字的位置与滑块的值相对应(很像链接中的图片).

I wish to have numbers in place of ticks along the tickbar. I want the position of the number to correspond to the value of a slider (much like the picture in the link).

我四处搜索，发现一个建议是创建一个继承自 TickBar 的类并覆盖它的 OnRender 方法.

I've searched around and one suggestion I found said to create a class that inherits from TickBar and override it's OnRender method.

我宁愿找到一个不涉及该问题的解决方案.我真的希望使用控制模板可以解决问题.因此，如果有这样的解决方案，我们将不胜感激！:)

I'd much rather find a solution that doesn't involve that. I was really hoping using a control template would do the trick. So, If there is one such solution, suggestions would be greatly appreciated! :)

推荐答案

好的，我有一个解决方案.我想我应该回答我的问题，以防其他人遇到和我一样的情况.:-)

Okay, I have a solution. I figured I should answer my question in the event some other fellow along the line runs into the same situation as I. :-)

Override OnRender 似乎是最明显的解决方案.我真的很希望使用某种模板...sigh ...嗯.无论如何，我遇到了 这个讨论 在 MSDN 的论坛上提供了一个答案，让我朝着正确的方向前进.

Override OnRender seems to be the most obvious solution. I was really hoping to use a template of sorts...sigh ...ah well. Anyways, I ran across this discussion on MSDN's forums which provided an answer to send me in the right direction.

简单，但需要几个星期才能使其更灵活，所以这是我的版本:

Simple, and it need a few tweeks to make it more flexible, so here's my version:

class CustomTickBar : TickBar
{
    protected override void OnRender(System.Windows.Media.DrawingContext dc)
    {
        double num = this.Maximum - this.Minimum;
        double y = this.ReservedSpace * 0.5;
        FormattedText formattedText = null;
        double x = 0;
        for(double i = 0; i <= num; i += this.TickFrequency)
        {
            formattedText = new FormattedText(i.ToString(), FlowDirection.LeftToRight, 
                new Typeface("Verdana"), 8, Brushes.Black);
            if(this.Minimum == i)
                x = 0;
            else
                x += this.ActualWidth / (num / this.TickFrequency) ;
            dc.DrawText(formattedText, new Point(x, 10)); 
        }
    }
}

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