[NETBEANS-2649] Output tab name truncated

• Type: Bug
• Status: Open
• Priority: Trivial
• Resolution: Unresolved
• Affects Version/s: 8.2, 11.0
• Component/s: platform - Window System

Environment

Windows 10, JDK 11

• Assignee: Unassigned
• Reporter: Rangi Keen
• Created: 06/Jun/19 19:29
• Updated: 07/Jun/19 14:15

Description

When running NetBeans with JDK 11 (specifically AdoptOpenJDK 11.0.3+7) on Windows 10, the Output tab name is truncated and appears as "Outp..." rather than "Output".

The problem appears to be related to text antialiasing not being used in the offscreen graphics while it is used when actually rendering the tab contents. The widths of some characters, notably the wider capital letters such as "O", differ when "LCD HRGB antialiasing" (and perhaps others) is used.

Adding the following to BasicScrollingTabDisplayerUI.getOffscreenGraphics() appears to resolve the issue:

public static Graphics2D getOffscreenGraphics() {
    ...
    Graphics2D graphics = (Graphics2D) result.getGraphics();
    graphics.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
    UIManager.getDefaults().get(RenderingHints.KEY_TEXT_ANTIALIASING));
    return graphics;
}