[jira] [Closed] (NETBEANS-3355) SideBarFactory painting offset with large files

["Tomáš Procházka (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/NETBEANS-3355?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tomáš Procházka closed NETBEANS-3355.
-------------------------------------
    Resolution: Cannot Reproduce

Tested in NetBeans 12.2.

> SideBarFactory painting offset with large files
> -----------------------------------------------
>
>                 Key: NETBEANS-3355
>                 URL: https://issues.apache.org/jira/browse/NETBEANS-3355
>             Project: NetBeans
>          Issue Type: Bug
>    Affects Versions: 8.2, 11.0
>            Reporter: Benedikt Schlagberger
>            Priority: Major
>         Attachments: Bildschirmfoto von 2019-11-07 19-34-21.png
>
>
> When painting in the sidebar using the {{SideBarFactory}}, the painted Graphic is offset for large files. To reproduce, create a NetBeans plugin project and add the following class:
> {code:java}
> package com.mycompany.sidebar_test;
> import java.awt.Color;
> import java.awt.Dimension;
> import java.awt.Graphics;
> import javax.swing.JComponent;
> import javax.swing.text.JTextComponent;
> import org.netbeans.spi.editor.SideBarFactory;
> public class MySidebarFactory implements SideBarFactory {
>     @Override
>     public JComponent createSideBar(JTextComponent jtc) {
>         return new MySidebar();
>     }
>     private class MySidebar extends JComponent {
>         @Override
>         protected void paintComponent(Graphics g) {
>             g.setColor(Color.BLUE);
>             g.fillRect(0, 0, 10, 1000); // Paint blue rectangle starting at the top of the sidebar with height of 1000px 
>         }
>         @Override
>         public Dimension getPreferredSize() {
>             Dimension dimension = new Dimension(this.getParent().getSize());
>             dimension.width = 10;
>             return dimension;
>         }
>     }
> }
> {code}
> Register the {{SideBarFactory}} using the following {{layers.xml}}:
> {code:xml}
> <?xml version="1.0" encoding="UTF-8"?>
> <!DOCTYPE filesystem PUBLIC "-//NetBeans//DTD Filesystem 1.2//EN" "http://www.netbeans.org/dtds/filesystem-1_2.dtd">
> <filesystem>
>     <folder name="Editors">
>         <folder name="SideBar">
>             <file name="com-mycompany-sidebar_test-MySidebarFactory.instance">
>                 <attr name="location" stringvalue="West"/>
>             </file>
>         </folder>
>     </folder>
> </filesystem>
> {code}
> Now start the plugin and open a project containing a large file for example the [StrBuilder.java|https://raw.githubusercontent.com/apache/commons-lang/master/src/main/java/org/apache/commons/lang3/text/StrBuilder.java] from the apache commons lib.
> The painting is offset by a large amount as you can see in the attached screenshot (blue rectangle should start in line 1, not 2150). When shortening the file and re-opening it, the marker moves, so I suppose this is related to the file size.



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