Basic Style Dictionary
This example code is bare-bones to show you what this framework can do. If you have the style-dictionary module installed globally, you can cd
into this directory and run:
style-dictionary build
You should see something like this output:
Copying starter files...
Source style dictionary starter files created!
Running `style-dictionary build` for the first time to generate build artifacts.
scss
✔︎ build/scss/_variables.scss
android
✔︎ build/android/font_dimens.xml
✔︎ build/android/colors.xml
ios
✔︎ build/ios/StyleDictionaryColor.h
✔︎ build/ios/StyleDictionaryColor.m
✔︎ build/ios/StyleDictionarySize.h
✔︎ build/ios/StyleDictionarySize.m
ios-swift
✔︎ build/ios-swift/StyleDictionary.swift
ios-swift-separate-enums
✔︎ build/ios-swift/StyleDictionaryColor.swift
✔︎ build/ios-swift/StyleDictionarySize.swift
Good for you! You have now built your first style dictionary! Moving on, take a look at what we have built. This should have created a build directory and it should look like this:
├── README.md
├── config.json
├── properties/
│ ├── color/
│ ├── base.json
│ ├── font.json
│ ├── size/
│ ├── font.json
├── build/
│ ├── android/
│ ├── font_dimens.xml
│ ├── colors.xml
│ ├── scss/
│ ├── _variables.scss
│ ├── ios/
│ ├── StyleDictionaryColor.h
│ ├── StyleDictionaryColor.m
│ ├── StyleDictionarySize.h
│ ├── StyleDictionarySize.m
│ ├── ios-swift/
│ ├── StyleDictionary.swift
│ ├── StyleDictionaryColor.swift
│ ├── StyleDictionarySize.swift
If you open config.json
you will see there are 3 platforms defined: scss, android, ios. Each platform has a transformGroup, buildPath, and files. The buildPath and files of the platform should match up to the files what were built. The files built should look like these:
Android
<resources>
<dimen name="size_font_small">12.00sp</dimen>
<dimen name="size_font_medium">16.00sp</dimen>
<dimen name="size_font_large">32.00sp</dimen>
<dimen name="size_font_base">16.00sp</dimen>
</resources>
<resources>
<color name="color_base_gray_light">#ffcccccc</color>
<color name="color_base_gray_medium">#ff999999</color>
<color name="color_base_gray_dark">#ff111111</color>
<color name="color_base_red">#ffff0000</color>
<color name="color_base_green">#ff00ff00</color>
<color name="color_font_base">#ffff0000</color>
<color name="color_font_secondary">#ff00ff00</color>
<color name="color_font_tertiary">#ffcccccc</color>
</resources>
SCSS
$color-base-gray-light: #cccccc;
$color-base-gray-medium: #999999;
$color-base-gray-dark: #111111;
$color-base-red: #ff0000;
$color-base-green: #00ff00;
$color-font-base: #ff0000;
$color-font-secondary: #00ff00;
$color-font-tertiary: #cccccc;
$size-font-small: 0.75rem;
$size-font-medium: 1rem;
$size-font-large: 2rem;
$size-font-base: 1rem;
iOS
#import "StyleDictionaryColor.h"
@implementation StyleDictionaryColor
+ (UIColor *)color:(StyleDictionaryColorName)colorEnum{
return [[self values] objectAtIndex:colorEnum];
}
+ (NSArray *)values {
static NSArray* colorArray;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
colorArray = @[
[UIColor colorWithRed:0.800f green:0.800f blue:0.800f alpha:1.000f],
[UIColor colorWithRed:0.600f green:0.600f blue:0.600f alpha:1.000f],
[UIColor colorWithRed:0.067f green:0.067f blue:0.067f alpha:1.000f],
[UIColor colorWithRed:1.000f green:0.000f blue:0.000f alpha:1.000f],
[UIColor colorWithRed:0.000f green:1.000f blue:0.000f alpha:1.000f],
[UIColor colorWithRed:1.000f green:0.000f blue:0.000f alpha:1.000f],
[UIColor colorWithRed:0.000f green:1.000f blue:0.000f alpha:1.000f],
[UIColor colorWithRed:0.800f green:0.800f blue:0.800f alpha:1.000f]
];
});
return colorArray;
}
@end
Pretty nifty! This shows a few things happening:
- The build system does a deep merge of all the property JSON files defined in the
source
attribute of config.json
. This allows you to split up the property JSON files however you want. There are 2 JSON files with color
as the top level key, but they get merged properly. - The build system resolves references to other style properties.
{size.font.medium.value}
gets resolved properly. - The build system handles references to property values in other files as well as you can see in
properties/color/font.json
.
Now let's make a change and see how that affects things. Open up properties/color/base.json
and change "#111111"
to "#000000"
. After you make that change, save the file and re-run the build command style-dictionary build
. Open up the build files and take a look.
Huzzah!
Now go forth and create! Take a look at all the built-in transforms and formats.