什么是scaledSize (Legend.FontSpec)

Question

我正在尝试在ZedGraph上设置图例的字体大小。但是，大小从来没有出现在我设置的位置。

这个值从何而来？我已经检查了我的代码(我从其他人手中接管了项目，这是一个大项目，所以很难找到它)，并在ZedGraph对象的其他地方查找某种缩放项，但找不到如何设置此值。它是以某种方式自动计算的吗？

我也在网上找过答案，但一无所获。

Answer 1

这是Size的设置器：

set
{
    if ( value != _size )
    {
        Remake( _scaledSize / _size * value, _size, ref _scaledSize,
                    ref _font );
        _size = value;
    }
}
//...

/// <summary>
/// Recreate the font based on a new scaled size.  The font
/// will only be recreated if the scaled size has changed by
/// at least 0.1 points.
/// </summary>
/// <param name="scaleFactor">
/// The scaling factor to be used for rendering objects.  This is calculated and
/// passed down by the parent <see cref="GraphPane"/> object using the
/// <see cref="PaneBase.CalcScaleFactor"/> method, and is used to proportionally adjust
/// font sizes, etc. according to the actual size of the graph.
/// </param>
/// <param name="size">The unscaled size of the font, in points</param>
/// <param name="scaledSize">The scaled size of the font, in points</param>
/// <param name="font">A reference to the <see cref="Font"/> object</param>
private void Remake( float scaleFactor, float size, ref float scaledSize, ref Font font )
{
    float newSize = size * scaleFactor;

    float oldSize = ( font == null ) ? 0.0f : font.Size;

    // Regenerate the font only if the size has changed significantly
    if ( font == null ||
            Math.Abs( newSize - oldSize ) > 0.1 ||
            font.Name != this.Family ||
            font.Bold != _isBold ||
            font.Italic != _isItalic ||
            font.Underline != _isUnderline )
    {
        FontStyle style = FontStyle.Regular;
        style = ( _isBold ? FontStyle.Bold : style ) |
                    ( _isItalic ? FontStyle.Italic : style ) |
                     ( _isUnderline ? FontStyle.Underline : style );

        scaledSize = size * (float)scaleFactor;
        font = new Font( _family, scaledSize, style, GraphicsUnit.World );
    }
}

有趣的代码行是：

scaledSize = size * (float)scaleFactor;
font = new Font( _family, scaledSize, style, GraphicsUnit.World );

这意味着您的大小是使用PaneBase.CalcScaleFactor缩放的。你应该看看这最后一个

Answer 2

ZedGraph会根据窗格的大小自动缩放所有字体。

这是通过GraphPane.IsFontScaled属性控制的。将其设置为false，您的字体应保持您设置的大小。