As of Jan. 11, 2017, MacOSMath is already merged back to iosMath. Check out this link. This repo is here only for reference, and will not be updated.
Great iOS LaTeX rendering engine (iosMath) ported to Mac OS!
MacOSMath
is a library for displaying beautifully rendered math equations
in Mac applications. It typesets formulae written using the LaTeX in a
NSTextField
equivalent class. It uses the same typesetting rules as LaTeX
and so the equations are rendered exactly as LaTeX would render them. It is based on Kostub's iosMath library. All credits go to Kostub, he did all the hard work and makes iosMath better and better. I only ported it to Mac platform and reformatted code a little bit. Also, part of this readme (actually, most of it), is based on his original one. Please do check out iosMath.
Here is a screenshot of Quadratic Formula this library renders:
As of Jan. 7, 2017, Chinese characters support is added into this project.
例子 (Examples):
下面的例子无任何实际含义或不规范,仅用于演示程序功能使用 (The following examples do not have any meaning or is not writing standard, and is only used to illustrate functionality of this program):
To display Chinese characters, set the font to xits-math-cn.otf, which has Chinese font extension. You can also use your own otf font with Chinese characters. Here is an example:
self.mathLabel.font = [MTFont xitsFontAndChineseExtensionWithSize:20.0f];
self.mathLabel.latex = @"中文";
MacOSMath
works on OS X 10.8+, and uses advanced memory management (aka. Manual Retain Release). It depends on the following Apple frameworks:
- Foundation.framework
- Cocoa.framework
- CoreGraphics.framework
- QuartzCore.framework
- CoreText.framework
The library provides a class MTMathUILabel
which is a NSView
that
supports rendering math equations. To display an equation simply create
an MTMathUILabel
as follows:
#import "MTMathUILabel.h"
MTMathULabel *label = [[MTMathUILabel alloc] init];
label.latex = @"x = \\frac{-b \\pm \\sqrt{b^2-4ac}}{2a}";
In storyboard (or nib file), drag and place a NSView
to NSWindow
, and change its class in Identity Inspector to MTMathUILabel
as will render the quadratic formula example shown above. Or you can create a MTMathUILabel
programmatically.
This is a list of formula types that the library currently supports:
- Simple algebraic equations
- Fractions and continued fractions
- Exponents and subscripts
- Trigonometric formulae
- Square roots and n-th roots
- Calculus symbos - limits, derivatives, integrals
- Big operators (e.g. product, sum)
- Big delimiters (using \left and \right)
- Greek alphabet
- Combinatorics (\binom, \choose etc.)
- Geometry symbols (e.g. angle, congruence etc.)
- Ratios, proportions, percents
- Math spacing
- Overline and underline
- Math accents
- Matrices
- Equation alignment
- Most commonly used math symbols
MTMathUILabel
supports some advanced configuration options:
You can change the mode of the MTMathUILabel
between Display Mode
(equivalent to $$
or \[
in LaTeX) and Text Mode (equivalent to $
or \(
in LaTeX). The default style is Display. To switch to Text
simply:
label.labelMode = kMTMathUILabelModeText;
The default alignment of the equations is left. This can be changed to center or right as follows:
label.textAlignment = kMTTextAlignmentCenter;
The default font-size is 20pt. You can change it as follows:
label.fontSize = 30;
The default font is XITS Math. This can be changed as:
label.font = [MTFont latinModernFontWithSize:20];
This project has 3 fonts bundled with it, but you can use any OTF math font.
The default color of the rendered equation is black. You can change it to any other color as follows:
label.textColor = [NSColor redColor];
It is also possible to set different colors for different parts of the
equation. Just access the displayList
field and set the textColor
on the underlying displays that you want to change the color of.
The MTMathUILabel
has top, bottom, left and right padding for finer
control of placement of the equation in relation to the view. However,
if you use auto-layout it is preferable to use constraints instead.
If you need to set it you can do as follows:
label.paddingRight = 20;
label.paddingTop = 10;
If the LaTeX text given to MTMathUILabel
is
invalid or if it contains commands that aren't currently supported then
an error message will be displayed instead of the label.
This error can be programmatically retrieved as label.error
. If you
prefer not to display anything then set:
label.displayErrorInline = NO;
Note this is not a complete implementation of LaTeX math mode. There are some important pieces that are missing and will be included in future updates. This includes:
- Support for explicit big delimiters (bigl, bigr etc.)
- Support for specifing fonts such as
\cal
or\rm
- Addition of missing plain TeX commands
For people who wants to render math equation on iOS, even those who don't, I recommend to check Kostub's:
- iosMath: Beautiful math equation rendering on iOS.
It is the original project, and MacOSMath is just a ported version for Mac.
There are also other wonderful libraries written by Kostub:
- MathEditor: A WYSIWYG editor for math equations on iOS.
- MathSolver: A library for solving math equations.
MacOSMath is available under the MIT license, the same as iosMath. See the LICENSE file for more info.
This distribution contains the following fonts. These fonts are licensed as follows:
- Latin Modern Math: [GUST Font License](./MacOSMath/Rendering\ Engine/font/GUST-FONT-LICENSE.txt)
- Tex Gyre Termes: [GUST Font License](./MacOSMath/Rendering\ Engine/font/GUST-FONT-LICENSE.txt)
- XITS Math: [Open Font License](./MacOSMath/Rendering\ Engine/font/OFL.txt)