\NeedsTeXFormat{LaTeX2e}[2011/06/27]

\ProvidesPackage{tikz-flowchart}

[2019/08/20 v1.0.01 draw flowchart using TikZ]

\RequirePackage{tikz}

\RequirePackage{xifthen}

\RequirePackage{kvoptions}

\SetupKeyvalOptions{

family=flowchart,

prefix=flowchart@,

setkeys=\kvsetkeys

}

\DeclareBoolOption[false]{debug}

\DeclareDefaultOption{}

\kvsetkeys{flowchart}{}

\ProcessKeyvalOptions*

\usetikzlibrary{

arrows.meta, % 箭头形状

shapes.geometric, % 几何形状

chains, % 链式布局

calc, % 坐标计算

}

\pgfkeys{

/flowchart/.is family,

/flowchart/.search also={/tikz},

}

\def\flowchartset{\pgfqkeys{/flowchart}}

\flowchartset{

free color/.store in = \freecolor, % 自由连线颜色

norm color/.store in = \normcolor, % 常规连线颜色

cong color/.store in = \congcolor, % 关联连线颜色

proc fill color/.store in = \procfillcolor, % 顺序处理框填充颜色

test fill color/.store in = \testfillcolor, % 判断框填充颜色

io fill color/.store in = \iofillcolor, % 输入/输出框填充颜色

term fill color/.store in = \termfillcolor, % 开始/结束框填充颜色

proc text width/.store in = \proctxtwd, % 顺序处理框宽度

test text width/.store in = \testtxtwd, % 判断框宽度

io text width/.store in = \iotxtwd, % 输入/输出框宽度

term text width/.store in = \termtxtwd, % 开始/结束宽度

chain direction/.store in = \chaindir, % 结点自动布置方向

minimum node distance/.store in = \minnodedis, % 最小结点间距

maximum node distance/.store in = \maxnodedis, % 最大结点间距

border line width/.store in = \bdlinewd, % 各类流程框边框宽度

flow line width/.store in = \flowlinewd, % 各类流程线线条宽度

stealth length/.store in = \stealthlen, % 箭头长度

stealth width/.store in = \stealthwd, % 箭头宽度

}

\flowchartset{

free color = green, % 自由连线颜色(默认取green)

norm color = blue, % 常规连线颜色(默认取blue)

cong color = red, % 关联连线颜色(默认取red)

proc fill color = white, % 顺序处理框填充颜色(默认取白色)

test fill color = white, % 判断框填充颜色(默认取白色)

io fill color = white, % 输入/输出框填充颜色(默认取白色)

term fill color = white, % 开始/结束框填充颜色(默认取白色)

proc text width = 8em, % 顺序处理框宽度(默认取8em)

test text width = 5em, % 判断框宽度(默认取5em)

io text width = 6em, % 输入/输出框宽度(默认取6em)

term text width = 3em, % 开始/结束宽度(默认取3em)

chain direction = below, % 结点自动布置方向(默认取below)

minimum node distance = 6mm, % 最小结点间距(默认取6mm)

maximum node distance = 60mm, % 最大结点间距(默认取60mm)

border line width = \pgflinewidth, % 各类流程框边框宽度(默认取当前线条宽度)

flow line width = \pgflinewidth, % 各类流程线线条宽度(默认取当前线条宽度)

stealth length = 1.5mm, % 箭头长度(默认取1.5mm)

stealth width = 1.0mm, % 箭头宽度(默认取1.0mm)

}

\tikzset{

start chain = going \chaindir, % 结点自动布置方向(默认取below)

node distance = \minnodedis and \maxnodedis, % 结点间距

every join/.style = {norm}, % 默认自动连接线的连线样式

% 流程框样式的基础样式

base/.style = {line width = \bdlinewd, % 边框线宽

draw, % 绘制边框

on chain, % 沿布局方向绘制

on grid, % 沿网格布局

align=center, % 内容居中对齐

minimum height=2ex, % 流程框最小高度

},

% 顺序处理框样式

proc/.style={base, % 基础样式

rectangle, % 矩形边框

text width=\proctxtwd, % 最大文本宽度(超过会自动换行)

fill=\procfillcolor, % 填充色

},

% 判断框样式

test/.style={base, % 基础样式

diamond, % 菱形边框

aspect=2.5, % 长高比例

text width=\testtxtwd, % 最大文本宽度(超过会自动换行)

fill=\testfillcolor, % 填充色

},

% 输入/输出框样式

io/.style={base, % 基础样式

trapezium, % 平行四边形

trapezium left angle=70, % 平行四边形左倾角

trapezium right angle=110, % 平行四边形右倾角

text width=\iotxtwd, % 最大文本宽度(超过会自动换行)

fill=\iofillcolor, % 填充色

},

% 开始/结束框样式

term/.style={proc, % 基于proc样式

rounded corners=1.0mm, % 为矩形添加圆角属性

text width=\termtxtwd, % 最大文本宽度(超过会自动换行)

fill=\termfillcolor, % 填充色

},

% 流程连接点样式

connector/.style = {draw, % 绘制边框

circle, % 圆形

node distance=3cm, % 节点间距

},

% 绕接连线点样式(不相交的两个交汇路径)

connect/.style args={(#1) to (#2) over (#3) by #4}{

insert path={

let \p1=($(#1)-(#3)$), \n1={veclen(\x1,\y1)},

\n2={atan2(\y1,\x1)}, \n3={abs(#4)}, \n4={#4>0 ?-180:180} in

(#1) -- ($(#1)!\n1-\n3!(#3)$) arc (\n2:\n2+\n4:\n3) -- (#2)

}

},

% coord结点样式(用于布置流程线连接点)

coord/.style={coordinate, % 笛卡尔坐标系

%on chain, % 沿布局方向绘制

%on grid, % 沿网格布局

node distance=6mm and 25mm, % 节点间距

},

% nmark结点样式(用于布置调试坐标标记点)

nmark/.style={draw, % 绘制边框

cyan, % 青色

circle, % 圆形

font={\sffamily\bfseries}, % 字体

},

% -------------------------------------------------

% 无箭头连线样式

lnorm/.style={line width = \flowlinewd, % 线宽

draw, % 绘制

\normcolor, % 颜色

},

lfree/.style={line width = \flowlinewd,

draw,

\freecolor,

},

lcong/.style={line width = \flowlinewd,

draw,

\congcolor,

},

% 流程线实心交点样式

dotnorm/.style={draw, % 绘制

fill = \normcolor, % 填充颜色

\normcolor, % 颜色

},

dotfree/.style={draw,

fill = \freecolor,

\freecolor,

},

dotcong/.style={draw,

fill = \congcolor,

\congcolor,

},

% 流程线空心交点样式

cdotnorm/.style={draw, % 绘制

\normcolor, % 颜色

},

cdotfree/.style={draw,

\freecolor,

},

cdotcong/.style={draw,

\congcolor,

},

% 带箭头连线样式

norm/.style={line width = \flowlinewd, % 线宽

-{Stealth[length=\stealthlen, % 箭头长度

width=\stealthwd, % 箭头宽度

]

},

draw, % 绘制

\normcolor, % 颜色

},

free/.style={line width = \flowlinewd,

-{Stealth[length=\stealthlen,

width=\stealthwd,

]

},

draw,

\freecolor,

},

cong/.style={line width = \flowlinewd,

-{Stealth[length=\stealthlen,

width=\stealthwd,

]

},

draw,

\congcolor,

},

% 斜体字样式

it/.style={font={\small\itshape}},

}

% 设置一个用于调试的标记符号图层，注意确保这一图层位于顶层

\pgfdeclarelayer{marx}

\pgfsetlayers{main,marx}

\newcommand{\cmark}[2][]{%

\begin{pgfonlayer}{marx}

\node [nmark] at (c#2#1) {#2};

\end{pgfonlayer}{marx}

}

\newcommand{\cmark}[2][]{\relax}