1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
# coloredtheorem
A colorful boxed theorem environment, combining `tcolorbox` and breakable boxes. It supports full `tcolorbox` customization, automatic numbering, `\label{...}` and `\ref{…}`, and `\listof…`
<!--
--------
<picture>
<source
media="(prefers-color-scheme: dark)"
srcset="
https://api.star-history.com/svg?repos=joaomlourenco/coloredtheorem&type=Date&theme=dark
"
/>
<source
media="(prefers-color-scheme: light)"
srcset="
https://api.star-history.com/svg?repos=joaomlourenco/coloredtheorem&type=Date
"
/>
<img
width="500"
alt="Star History Chart"
src="https://api.star-history.com/svg?repos=joaomlourenco/coloredtheorem&type=Date"
/>
</picture>
--------
-->
## About
* **Package:** coloredtheorem — A colorful boxed theorem environment
* **Copyright:** 2024 © João M. Lourenço <joao.lourenco@fct.unl.pt>
* **CTAN:** https://ctan.org/pkg/coloredtheorem
* **Repository:** https://github.com/joaomlourenco/coloredtheorem
* **License:** The LaTeX Project Public License 1.3c
## Introduction
The `coloredtheorem` package is a simple environment that allows to write stuff inside
boxes from `tcolorbox`. If necessary the boxes gracefully overflow to the next page.
This package takes no options and includes `tcolorbox` if necessary. You may include
`tcolorbox` with your own favourite options prior to including this package.
Akin to `\newtheorem` from the `amsmath` package, the user should start by defining a
new _theorem/box_ group and customize its aspect. Each new environment will have its
own counter/numbering. Notice that `\label{...}` and `\ref{...}` work as expected.
There is also a command to generate the corresponding _\listof..._
## Usage
* `\usepackage{coloredtheorem}`
* Load Load the `coloredtheorem` package. This package will load `tcolorbox` if necessary.
* `\cthnewtheorem{<envname>}{<Name>}[<tcolorbox options>]`
* Create a new boxed algorithm-like environment.
* `<envname>` is the suffix for the new environment being defined, e.g., `algoritm`. The effective environment name will be `cth<envname>`, e.g., `cthalgorithm`.
* `<Name>` is the (printable) name or the new environment being defined, e.g., _Algorithm_.
* `<tcolorbox options>` default options for the environment being defined (this argument is optional). These options are passed straight to the `tcolorbox` environment, so anything valid for `tcolorbox` is also valid here.
* `\begin{<envname>}{<Caption>}[<tcolorbox options>]<Contents>\end{<envname>}`
* Create a new _algorithm-like_ box with the given contents.
∗ `<AltCaption>` is the alternative caption for the `\cthlistof<envname>s` (see below).
* `<envname>` is the sffix for environment name, e.g., `algorithm`.
* `<Caption>` is the caption/title of the box. If the caption is left empty, this box will not be listed with the `\cthlistof<envname>s` (see below).
* `<tcolorbox options>` options to be passed to the `tcolorbox` environment, which will override the defaults given in `\cthnewalgorithm` (this argument is optional).
* `<Contents>` the contents to by typeset inside the colored environment.
* `\listof<envname>s`
* `<envname>` is the environment name suffix, e.g., `\cthlistofalgorithms`. Please
notice that there is a ‘s’ (plural) after `<envname>`.
## Example
Let’s start by creating two new environments, one for _algorithms_ and another for _examples_, both defaulting to a gray frame, the former with a yellowish background and the latter with a lighter gray background.
```latex
\cthnewtheorem{algorithm}{Algorithm}[coltitle=black, colback=yellow!10,
colframe=black!15]
\cthnewtheorem{example}{Example}[coltitle=black, colback=black!5,
colframe=black!30]
```
The box with Algorithm 1, which uses the default visual that was given when creating the environment with `\cthnewtheorem` and gracefully overflows onto the next page, was created with:
```latex
\begin{cthalgorithm}{Advance a counter to the next value in a domain
$\omega \in \mathbb{N}$.}
Algorithm body here!
\end{cthalgorithm}
```
<img width="650" alt="image" src="https://github.com/joaomlourenco/coloredtheorem/assets/2064643/fa9cacce-89cc-4973-ac16-41a6e21dfded">
_(page break here)_
<img width="650" alt="image" src="https://github.com/joaomlourenco/coloredtheorem/assets/2064643/bc976d1a-2d7d-4f62-b651-4b23124d8d76">
The box Example 1, which uses the default visual for the environment (as given to `\cthnewtheorem...`), was created with:
```latex
\begin{cthexample}{This is an example!}
Example body here!
\end{cthexample}
```
<img width="650" alt="image" src="https://github.com/joaomlourenco/coloredtheorem/assets/2064643/69bd5bbd-8da8-418f-805d-0837c62cfb2c">
Now, let’s create a new box for Algorithm 1, but with a different customized visual, which will affect only this entry! Notice that the customization argument is passed straight to the `tcolorbox` environment, so anything valid for `tcolorbox` is also valid here. Algorithm 2 was created with the following code:
```latex
\begin{cthalgorithm}
{Advance a counter to the next value in a domain $\omega \in
\mathbb{N}$, but now with a customized visual. Also, notice
that this algorithm breaks the page boundaries.}
[coltitle=white, colback=green!10, colframe=green!70!black,
colbacktitle=\sffamily\bfseries\large, fonttitle=red!50!white]
Algorithm body here!
\end{cthalgorithm}
```
<img width="650" alt="image" src="https://github.com/joaomlourenco/coloredtheorem/assets/2064643/977c371c-1ecb-43ca-9351-c4befc23f7e9">
_(page break here)_
<img width="650" alt="image" src="https://github.com/joaomlourenco/coloredtheorem/assets/2064643/c51ac463-c335-4132-9445-cb726ee616a1">
And now and example with no caption and a different visual... this example will not go into the` \listofexamples` below!
<img width="766" alt="image" src="https://github.com/joaomlourenco/coloredtheorem/assets/2064643/ab888abf-56ba-459d-aa94-2db9816d0a09">
Now let’s print the lists of algorithms and examples. Remember to add the prefix `cthth` to the `listof`, i.e., `\cthlistofalgorithms` and `\cthlistofexamples`!
## List of Algorithms
<img width="766" alt="image" src="https://github.com/joaomlourenco/coloredtheorem/assets/2064643/d2c4077e-ec5f-4b3d-8b24-a5713a8f3c29">
## List of Examples
<img width="767" alt="image" src="https://github.com/joaomlourenco/coloredtheorem/assets/2064643/483b6caf-f4f8-4e1c-83ff-f54101dad5f5">
|