Java - Changing Font Size in HTML JTextPane with CSS Styling

Question

Java - Changing Font Size in HTML JTextPane with CSS Styling

When utilizing the following code snippet:

Action sizeAction = new StyledEditorKit.FontSizeAction(String.valueOf(size), size);

The button associated with the action adds the HTML tags:

<FONT SIZE="5"> My text here </FONT>

Utilizing these tags leads to an incorrect representation of font size when other functions are performed. Instead, I aim to use a style tag to adjust the font size, such as:

<FONT STYLE="font-size: 16pt;"> My text here </FONT>

Is there a way to modify the TAGS inserted by the FONTSIZE action?

java html css action font-size

Answer 1

Answer №1

Discovered an improved solution for resolving the issue! Simply introduce a new Action and modify the method of adding attributes.

class TextSizeAction extends HTMLEditorKit.TextSizeAction {
    private int fontSize;

    public TextSizeAction(int fontSize) {
        super("text-size-" + fontSize, fontSize);
        this.fontSize = fontSize;
    }

    @Override
    public void actionPerformed(ActionEvent event) {
        JEditorPane textEditor = getEditor(event);
        if (fontSize > 0) {
           MutableAttributeSet attribute = new SimpleAttributeSet();
           attribute.addAttribute(StyleConstants.FontSize, fontSize + "pt");
           setCharacterAttributes(textEditor, attribute, false);
        } else UIManager.getLookAndFeel().provideErrorFeedback(textEditor);   
    }
}

Answer 2

Discovered an improved solution for resolving the issue! Simply introduce a new Action and modify the method of adding attributes.

class TextSizeAction extends HTMLEditorKit.TextSizeAction {
    private int fontSize;

    public TextSizeAction(int fontSize) {
        super("text-size-" + fontSize, fontSize);
        this.fontSize = fontSize;
    }

    @Override
    public void actionPerformed(ActionEvent event) {
        JEditorPane textEditor = getEditor(event);
        if (fontSize > 0) {
           MutableAttributeSet attribute = new SimpleAttributeSet();
           attribute.addAttribute(StyleConstants.FontSize, fontSize + "pt");
           setCharacterAttributes(textEditor, attribute, false);
        } else UIManager.getLookAndFeel().provideErrorFeedback(textEditor);   
    }
}

Java - Changing Font Size in HTML JTextPane with CSS Styling

Answer №1

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