ThemeBuilder

The ThemeBuilder is a tool that allows you to create custom themes based on Bootstrap or predefined DevExtreme themes. It consists of a UI version (illustrated below) and a command-line interface (CLI).

DevExtreme ThemeBuilder UI: Main View

Get Started

Once you open the ThemeBuilder, a theme configuration wizard appears. You can choose whether to create a new theme or import an existing DevExtreme or Bootstrap theme.

Create a New Theme

New themes are based on predefined DevExtreme themes. Follow these steps to create a new theme in the wizard:

  1. Click Choose a Base Theme.

  2. Select a base theme: Generic or Material.

  3. Select a color scheme and change basic appearance settings.

  4. If the appearance on the preview meets you requirements, click Export to export the theme. Otherwise, click Advanced Settings to navigate to the main view for additional customization.

Import an Existing Theme

You can import an existing theme from DevExtreme metadata saved beforehand or from Bootstrap variables. Follow the steps below to do that in the wizard:

  1. Click Import a Theme.

  2. Choose whether to import a theme from DevExtreme metadata or Bootstrap variables.

  3. To import DevExtreme metadata, upload a .json file with the metadata or paste the metadata in the text area.

    To import Bootstrap variables, upload a variables.less for Bootstrap 3 or _variables.scss file for Bootstrap 4. The ThemeBuilder uses colors from the variables to create a theme that is consistent with the Bootstrap theme.

After you import a theme, the wizard navigates to the main view for additional theme customization.

Customize the Theme

After you create or import a theme, the ThemeBuilder navigates you to the main view where you can customize the theme.

DevExtreme ThemeBuilder UI: Main View

The main view consists of the following elements:

  • Settings list (left-hand menu)
    Contains all customization settings divided into groups:

    • Basic Settings - settings used by multiple widgets

    • Typography Settings - settings that configure fonts

    • Specific widgets or widget groups - settings used by an individual widget or widget group

    The settings list also contains a search box to search for a widget or widget group.

  • Toolbar (top panel)
    Contains the theme switcher and Import and Export buttons.

  • Preview area
    Displays DevExtreme components in the customized theme. Updates automatically when you change a setting or switch between themes.

Postpone Customization

To return to customization later, save the theme's metadata beforehand. Click Export on the toolbar to open the Theme Export popup dialog. In this dialog, select the Export Metadata tab and click Save to File. A .json file with metadata is saved on your computer. Alternatively, you can copy the metadata from the text area at the bottom:

DevExtreme ThemeBuilder UI: Theme Export popup dialog

To continue customization, click Import on the toolbar. In the appeared Theme Import dialog, click Upload File and select the .json file that you exported previously. If you have copied the metadata rather than exported it as a .json file, paste it in the text area and click Upload Metadata:

DevExtreme ThemeBuilder UI: Theme Import popup dialog

Export the Resulting Theme

Click Export to open the Theme Export popup dialog. In this dialog, enter the color scheme name. If you want to export the theme as a color swatch, check the check box as well.

Click Save to File to save a file named dx.[base-theme-name].[color-scheme-name].css (for example, dx.material.brown.css) on your computer. Alternatively, you can copy the CSS from the text area at the bottom:

DevExtreme ThemeBuilder UI: Theme Export popup dialog

Finally, register the exported theme. If you exported a color swatch, apply it as described in Color Swatches.

NOTE
We periodically remove and remap unused constants to optimize our predefined themes. This can cause compatibility issues when you upgrade custom themes. We recommend saving your theme's metadata to enable you to fix these issues. Refer to the Postpone Customization topic for more information.

ThemeBuilder CLI

The ThemeBuilder CLI allows you to generate themes programmatically or at build time. This tool is part of the DevExtreme CLI.