Accessibility

Enable a screen reader

1. Download and enable your preferred screen reader:

   Windows

   macOS

   • NVDA: use the NVDA 2019.3 or later version for compatibility with 64-bit Java applications such as CLion.

     Download, install and enable NVDA.

   • JAWS: use the JAWS 12.0.1158 64-bit or later version for compatibility with 64-bit Java applications such as CLion.

     Download the version you need and restart your computer to enable the JAWS screen reader.

   VoiceOver

2. Ensure you have installed Java Access Bridge and the proper Java version for your screen reader, as follows:

   • To enable Java Access Bridge, open the command prompt and type [JRE_HOME]\bin\jabswitch -enable, where [JRE_HOME] is the directory of the JRE on your machine. For Java version 1.8, Java Access Bridge is part of JDK and you don't need to download it separately. Use control panel to enable the Java Access Bridge.

   • If your screen reader is 32-bit, install the 32-bit JRE version 1.7 or later. If your screen reader is 64-bit, install the 64-bit JRE version 1.7 or later.

   Your computer may have multiple versions of some important components of Java Access Bridge and they may not be compatible across versions. You need to verify that your Java Access Bridge configuration is correct.

   If your screen reader is 32-bit, ensure that C:\Windows\SysWOW64\WindowsAccessBridge-32.DLL is present and has a version number of 7.x.x.x or later. The file's description should read "Java(TM) Platform SE 7".

3. CLion automatically shows a prompt suggesting to enable the screen reader support if its installation was detected.

   In the dialog that opens, press Enable when you first launch CLion.

   The screen reader support can also be activated later or manually for already installed and configured versions of CLion.

Install and set up CLion

1. Download and install CLion.

   note

   For Windows and macOS, when CLion detects a screen reader on the first launch, it displays a dialog where you can enable a screen reader for CLion.

2. To enable screen reader support before the initial launch of CLion, do the following:

   • Open the configuration directory that contains personal settings, such as, keymaps, color schemes, and so on.

     Windows

     macOS

     Syntax

     %APPDATA%\JetBrains\<product><version>

     Example

     C:\Users\JohnS\AppData\Roaming\JetBrains\CLion2022.2

     Syntax

     ~/Library/Application Support/JetBrains/<product><version>

     Example

     ~/Library/Application Support/JetBrains/CLion2022.2

   • Create a file called idea.properties.

   • Add the ide.support.screenreaders.enabled=true property to the file you have created.

3. Launch CLion. The Support screen readers option located in Settings / Preferences | Appearance & Behavior | Appearance will be enabled.

   note

   When the Support screen readers option is enabled, CLion disables tooltips for icons in the main toolbar, switches controls to a keyboard, and adapts some controls for screen readers.

Adjust colors for red-green color vision deficiency

You can adjust IDE and editor colors if you have red-green color vision deficiency. In this case, code notifications such as errors that are usually highlighted in red or strings that are usually green, will be displayed with neutral colors. The color of the progress bar in the test runner will also get adjusted, so it can be easily recognized.

1. Press Ctrl+Alt+S to open the IDE settings and select Appearance & Behavior | Appearance.

2. Select Adjust colors for red-green vision deficiency and save your changes.

   Before

   After

   

   

Add the contrast color for scrollbars

You can make scrollbars in the editor more visible.

1. Press Ctrl+Alt+S to open the IDE settings and select Appearance & Behavior | Appearance.

2. From the options on the right, under Accessibility section, select Use contrast scrollbars.

   Before

   After

   

   

   note

   To configure the editor vertical scrollbar color and opacity, use the color scheme settings.

Configure colors for code elements, editor, scrollbar, hyperlinks, and so on

You can adjust colors for code elements, errors, elements of the editor, and tool windows. You can also configure a color for the vertical scrollbar in the editor.

1. Press Ctrl+Alt+S to open the IDE settings and select Editor | Color Scheme | General.

2. From the options list on the right, select an element for which you want to adjust the color. For example, you can select Code and adjust colors for injected language fragments or matched braces, and so on. Click OK to save the changes.

You can also adjust colors for the debugger, consoles and other parts of the IDE: select the appropriate node in the list of options located in Settings/Preferences | Editor | Color Scheme.

Override the default UI fonts

You can override the default fonts of the UI elements.

1. Press Ctrl+Alt+S to open the IDE settings and select Appearance & Behavior | Appearance.

2. From the options on the right, select Use custom font. From the list of fonts, select the one you need and in the Size field, specify the font's size.

   Click OK to save the changes.

Resize tool windows

You can resize the actual tool windows vertically or horizontally using shortcuts.

1. To resize vertically up or down, press Ctrl+Alt+Shift+Up or Ctrl+Alt+Shift+Down.

2. To resize horizontally left or right, press Ctrl+Alt+Shift+Left or Ctrl+Alt+Shift+Right.

Adjust text size in the editor

You can change font and a size of the text in the editor.

1. Press Ctrl+Alt+S to open the IDE settings and select Editor | General.

2. From the options on the right, select the Change font size (Zoom) with Ctrl+Mouse Wheel option to quickly change the text size (turning the mouse wheel) while you are working in the editor.

3. If you need to specify the exact font size, select Editor | Font.

4. From the options on the right, specify the font, its size, line spacing, and other available options. Click OK to save changes.

Customize shortcuts

You can configure custom shortcuts to actions that you frequently use.

1. Press Ctrl+Alt+S to open the IDE settings and select Keymap.

2. From the list of options on the right such as menus, actions, and tools, select the action you need.

3. Right-click the selected item and from the context menu, select an action you want to perform such as Add keyboard shortcut, Add mouse shortcut, or Add abbreviation.

4. In the dialog that opens, specify a shortcut. If you need, select the Second stroke option and specify an additional key for the shortcut. Click OK to save the changes.

   Click OK with the mouse. If you press Enter CLion will consider it a shortcut.

   note

   You can ignore a conflict and assign a shortcut to several actions. However, it is strongly recommended that you avoid binding two actions with the same shortcut, because the priority of these actions is not defined.

Customize smart keys behavior

You can configure the behavior of smart keys.

1. Press Ctrl+Alt+S to open the IDE settings and select Editor | General | Smart keys.

2. From the options on the right, select or clear the smart keys options, for example, you can clear the Insert paired brackets or the Insert paired quotes option that automatically inserts a closing bracket or a quote since it might not be useful when you use a screen reader. Click OK to save changes.

Disable automatic code completion

You can disable automatic code completion to avoid auto-inserting code elements when you work in the editor with a screen reader.

1. Press Ctrl+Alt+S to open the IDE settings and select Editor | General | Code completion.

2. Clear the Type-Matching Completion option. If you need, clear Basic Completion to disable basic completion as well.

Customize code folding

You can control the code folding behavior and specify what should or should not be folded.

1. Press Ctrl+Alt+S to open the IDE settings and select Editor | General | Code folding.

2. From the options on the right, select what should be collapsed by default.

Customize code style

You can configure spaces, tabs and indents.

1. Press Ctrl+Alt+S to open the IDE settings and select Editor | Code Style | [Language].

2. From the options on the right, click Tabs and Indents to configure tabs or Spaces to configure where and how to use spaces.

3. Click OK to save the changes.

Read gutter icons and line numbers in the editor

You can configure a screen reader to read line numbers, VCS annotations, debugger, and other icons that are located in the left gutter of your editor.

note

Make sure that the Support screen readers (requires restart) option is selected in Settings/Preferences | Appearance   Behavior | Appearance.

1. Open your file in the editor.

2. Press Alt + Shift + 6 and F simultaneously to focus on the gutter. CLion starts reading from the line where your caret is currently located.

3. Use the Up and Down arrow keys to move between lines. If you need to move to the next or previous gutter element in the line, use the Right and Left arrow keys respectively.

   While the focus is in the gutter, the screen reader can read the gutter icon tooltip if it is available.

   To access a tooltip, press the double shortcut Alt+Shift+6, T. To browse through the tooltip's content (symbol by symbol), use the Right and Left arrow keys.

4. Press Escape to switch the focus back to the editor.

Set a high contrast color theme

You can set a high contrast interface theme to work in CLion. The interface theme defines the appearance of windows, dialogs, and controls.

1. Press Ctrl+Alt+S to open the IDE settings and select Appearance & Behavior | Appearance.

2. In the UI Options area, from the Theme list, select High Contrast, and click OK to apply changes.

Set a high contrast color scheme

You can set a high contrast color scheme for your editor. CLion uses color schemes to help you define the preferred colors and fonts in the editor.

1. Press Ctrl+Alt+S to open the IDE settings and select Editor | Color Scheme.

2. On the Color Scheme page, from the Scheme list, select High Contrast.

3. Click OK to apply your changes.