Hyperref 框不遵循倾斜

2024-5-22 • tag-icon

tikz-pgf hyperref

Hyperref 框不遵循倾斜

当我沿着平面将文本放置在 3D 图形中时，hyperref框不会调整。图片中的问题文本被放置为

        \node [yz slant style, anchor=west, black] at (0,1,3) 
                {\href{http://tex.stackexchange.com}{TeX.SE}};

如果我删除它，yz slant style那么一切就会像第一个链接显示的那样正常工作，但是文本并没有按照我想要的平面对齐。

有办法解决这个问题吗？

在此处输入图片描述

参考：

倾斜的文本基于：如何计算 xslant 和 yslant

笔记：

下面的代码看起来比实际更吓人——大部分代码都在设置倾斜度，因此可以忽略不计。但这对于说明问题是必不可少的。

代码：

\documentclass{article}
\usepackage{xcolor}
\usepackage{tikz}
\usepackage[colorlinks=false, pdfborder={0 0 1}, allbordercolors=cyan]{hyperref}

\begin{document}

%% https://tex.stackexchange.com/a/51388/4301
\newcommand*\elevation{14}
\newcommand*\anglerot{-50}
\pgfmathsetmacro\xc{cos(\anglerot)}  
\pgfmathsetmacro\xs{sin(\anglerot)}   
\pgfmathsetmacro\yc{cos(\elevation)} 
\pgfmathsetmacro\ys{sin(\elevation)} 
\newcommand*\axexthreed{\xs*1cm,-\xc*1cm} 
\newcommand*\axeythreed{\yc*1cm,-\ys*1cm}
\newcommand*\axezthreed{0cm,1cm} 

\newcommand*{\CoordX}{3}%
\newcommand*{\CoordY}{4}%
\newcommand*{\CoordZ}{5}%

%% https://tex.stackexchange.com/a/170255/4301
\tikzset{yz slant style/.style={red, yslant=-tan(\elevation), xscale=cos(\elevation)}}
%\tikzset{xy slant style/.style={blue, xslant=-tan(\elevation+\anglerot), rotate=-\elevation, yscale=cos(\anglerot)}}
%\tikzset{xz slant style/.style={orange, yslant=-cot(\anglerot), xscale=sin(-\anglerot)}}


\begin{tikzpicture}[x = {(\axexthreed)},
                    y = {(\axeythreed)},
                    z = {(\axezthreed)},
                    ]

    %% Draw Axes:
    \draw[gray, thick, -latex] (-1,0,0) -- (\CoordX,0,0) node[black, left=6pt ] {$x$}; 
    \draw[gray, thick, -latex] (0,-1,0) -- (0,\CoordY,0) node[black, right=6pt] {$y$}; 
    \draw[gray, thick, -latex] (0,0,-1) -- (0,0,\CoordZ) node[black, above=6pt] {$z$};       

    %% Place text in yz plane
        \node [anchor=west] at (0,1,4) 
                {\href{http://tex.stackexchange.com}{TeX.SE (no slant)}};
                
        \node [yz slant style, anchor=west, black] at (0,1,3) %  ??? How get this border to work ???
                {\href{http://tex.stackexchange.com}{TeX.SE (slant)}};
\end{tikzpicture}
\end{document}

答案1

关于 pdfTeX：这是 TikZ 的一个限制。转换是使用原始命令而不是 pdfTeX 原语完成的\pdftransformmatrix。后者不包括翻译，因为它可以通过移动框来实现。但是，Tikz 的基本系统层命令需要包括翻译在内的整个矩阵，因此修复意味着至少在较低层进行重新设计。

内部结构：

pdfTeX 提供：

\pdfsetmatrix{<a> <b> <c> <d>}

pdfTeX 将其转换为等效的

\pdfliteral{<a> <b> <c> <d> 0 0 cm}

通知 pdfTeX 有关转换的信息，从而可以纠正链接和锚点位置。

TikZ在系统层定义\pgf@transformcm：

\def\pgfsys@transformcm#1#2#3#4#5#6{%
  \pgfsysprotocol@literalbuffered{#1 #2 #3 #4}%
  \pgf@sys@bp{#5}% <x>: horizontal translation in bp
  \pgf@sys@bp{#6}% <y>: vertical translation in bp
  \pgfsysprotocol@literal{cm}%
}

这相当于（<x>并<y>作为转换为 bp 的结果）：

\pdfliteral{#1 #2 #3 #4 <x> <y> cm}

但内容\pdfliteral是不是由 pdfTeX 解析，因此 pdfTeX 不知道该转换。

翻译组件<x破坏<y>了乐趣，因为 pdfTeX\pdftransformmatrix只能处理零值。

无论如何，pdfTeX 不直接支持任意链接形状。

答案2

倾斜、歪斜、剪切、旋转的超链接是没有问题的，至少如果使用 Acrobat Reader 来显示的话：

为此，我们定义了一个href={<url>}选项，将任何四边形的 TikZ 节点转换为超链接。

我们还将hyperref条目添加/QuadPoints [...]到LinkPDF 注释中。根据 PDF 规范，/QuadPoints [...]定义任意数量的四边形的角坐标，这些四边形只需完全内接在通常的水平链接矩形内，并进一步确定超链接的鼠标敏感区域。即使任意形状区域可以变成超链接这样，只需将多个四边形叠加即可。

（跑pdflatex／lualatex两次。）

\documentclass{article}

\usepackage{luatex85} %for LuaLaTeX compatibility
\usepackage{xcolor}
\usepackage{tikz}
\usepackage[colorlinks=false, pdfborder={0 0 1}, allbordercolors=cyan]{hyperref}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% href={<URL>} for TikZ nodes
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usetikzlibrary{calc}
\tikzset{
    href/.style={
        alias=hrefnode,
        append after command={
            let \p1 = (hrefnode.south west),
                \p2 = (hrefnode.south east),
                \p3 = (hrefnode.north east),
                \p4 = (hrefnode.north west)
                in
            node [inner sep=0pt, outer sep=0pt,at=(\p1)] {\pdfsavepos%
              \writeAux{}{%
                \string\expandafter\string\xdef\string\csname\space hrefnd\thehrefnd.x1\string\endcsname{%
                  \noexpand\hypercalcbp{\noexpand\number\pdflastxpos sp}}%
                \string\expandafter\string\xdef\string\csname\space hrefnd\thehrefnd.y1\string\endcsname{%
                  \noexpand\hypercalcbp{\noexpand\number\pdflastypos sp}}}%
            }
            node [inner sep=0pt, outer sep=0pt,at=(\p2)] {\pdfsavepos%
              \writeAux{}{%
                \string\expandafter\string\xdef\string\csname\space hrefnd\thehrefnd.x2\string\endcsname{%
                  \noexpand\hypercalcbp{\noexpand\number\pdflastxpos sp}}%
                \string\expandafter\string\xdef\string\csname\space hrefnd\thehrefnd.y2\string\endcsname{%
                  \noexpand\hypercalcbp{\noexpand\number\pdflastypos sp}}}%
            }
            node [inner sep=0pt, outer sep=0pt,at=(\p3)] {\pdfsavepos%
              \writeAux{}{%
                \string\expandafter\string\xdef\string\csname\space hrefnd\thehrefnd.x3\string\endcsname{%
                  \noexpand\hypercalcbp{\noexpand\number\pdflastxpos sp}}%
                \string\expandafter\string\xdef\string\csname\space hrefnd\thehrefnd.y3\string\endcsname{%
                  \noexpand\hypercalcbp{\noexpand\number\pdflastypos sp}}}%
            }
            node [inner sep=0pt, outer sep=0pt,at=(\p4)] {\pdfsavepos%
              \writeAux{}{%
                \string\expandafter\string\xdef\string\csname\space hrefnd\thehrefnd.x4\string\endcsname{%
                  \noexpand\hypercalcbp{\noexpand\number\pdflastxpos sp}}%
                \string\expandafter\string\xdef\string\csname\space hrefnd\thehrefnd.y4\string\endcsname{%
                  \noexpand\hypercalcbp{\noexpand\number\pdflastypos sp}}}%
            }
            {[local bounding box=link rect] (\p1)--(\p2)--(\p3)--(\p4)--cycle}
            node [inner sep=0pt, outer sep=0pt,anchor=center,at=(link rect.center)] {%
              {\edef\QuadPoints{/QuadPoints [%
                  \csname hrefnd\thehrefnd.x1\endcsname\space\csname hrefnd\thehrefnd.y1\endcsname\space
                  \csname hrefnd\thehrefnd.x2\endcsname\space\csname hrefnd\thehrefnd.y2\endcsname\space
                  \csname hrefnd\thehrefnd.x3\endcsname\space\csname hrefnd\thehrefnd.y3\endcsname\space
                  \csname hrefnd\thehrefnd.x4\endcsname\space\csname hrefnd\thehrefnd.y4\endcsname%
                ]}%
              \href{#1}{%
                % upscale a bit to ensure /QuadPoints lie within /Rect (link bounding box)
                \tikz[scale=1.01] \useasboundingbox (\p1)--(\p2)--(\p3)--(\p4)--cycle;%
              }}%
              \stepcounter{hrefnd}%
            }
        }
    }
}
\makeatletter
  %patch hyperref
  \let\Hy@setpdfborderOrig\Hy@setpdfborder
  \def\Hy@setpdfborder{
    \QuadPoints
    \Hy@setpdfborderOrig
  }
  \def\writeAux{\protected@write\@mainaux}
  \def\QuadPoints{}
\makeatother
\newcounter{hrefnd}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\begin{document}

%% https://tex.stackexchange.com/a/51388/4301
\newcommand*\elevation{14}
\newcommand*\anglerot{-50}
\pgfmathsetmacro\xc{cos(\anglerot)}  
\pgfmathsetmacro\xs{sin(\anglerot)}   
\pgfmathsetmacro\yc{cos(\elevation)} 
\pgfmathsetmacro\ys{sin(\elevation)} 
\newcommand*\axexthreed{\xs*1cm,-\xc*1cm} 
\newcommand*\axeythreed{\yc*1cm,-\ys*1cm}
\newcommand*\axezthreed{0cm,1cm} 

\newcommand*{\CoordX}{3}%
\newcommand*{\CoordY}{4}%
\newcommand*{\CoordZ}{5}%

%% https://tex.stackexchange.com/a/170255/4301
\tikzset{yz slant style/.style={red, yslant=-tan(\elevation), xscale=cos(\elevation)}}
\tikzset{xy slant style/.style={blue, xslant=-tan(\elevation+\anglerot), rotate=-\elevation, yscale=cos(\anglerot)}}
\tikzset{xz slant style/.style={orange, yslant=-cot(\anglerot), xscale=sin(-\anglerot)}}


\begin{tikzpicture}[x = {(\axexthreed)},
                    y = {(\axeythreed)},
                    z = {(\axezthreed)},
                    ]

    %% Draw Axes:
    \draw[gray, thick, -latex] (-1,0,0) -- (\CoordX,0,0) node[black, left=6pt ] {$x$}; 
    \draw[gray, thick, -latex] (0,-1,0) -- (0,\CoordY,0) node[black, right=6pt] {$y$}; 
    \draw[gray, thick, -latex] (0,0,-1) -- (0,0,\CoordZ) node[black, above=6pt] {$z$};       

    %% Place text in various planes
    \node [yz slant style,anchor=west,black,href={http://tex.stackexchange.com}] at (0,1,3) {TeX.SE (slant)};
    \node [xy slant style,anchor=north west,black,href={http://tex.stackexchange.com}] at (1.5,1,0) {TeX.SE (slant)};
    \node [xz slant style,anchor=south west,rotate=90,black,href={http://tex.stackexchange.com}] at (1.5,0,1) {TeX.SE (slant)};
\end{tikzpicture}
\end{document}

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