Image not displayed correctly in Help Window -> Map View

[raykiddy]

The image at the start of this Help information is not being displayed correctly. Either the image is bad, or it is being set to the wrong height.

[Klumbumbus]

There are also some problems on the help start page (Help) in the JOSM Help Browser

• icons with wrong aspect ratio (same problem like OP)
• svg do not work at all

[simon04]

For displaying SVG, this might be the way to go: ​http://stackoverflow.com/a/16073804, override javax.swing.text.html.HTMLEditorKit.HTMLFactory#create for kind==HTML.Tag.IMG.

For the correct height, the simplest version would be to drop the width information thus showing the image in full width+height (see below). We also might implement a better computation when considering SVG images.

src/org/openstreetmap/josm/tools/WikiReader.java

@@ -142 +142 @@
                 // add a border="0" attribute to images, otherwise the internal help browser
                 // will render a thick  border around images inside an <a> element
                 b += line.replaceAll("<img ", "<img border=\"0\" ")
+                         .replaceAll("width=\"(\\d+)\"", "")
                          .replaceAll("<span class=\"icon\">.</span>", "")
                          .replaceAll("href=\"/", "href=\"" + baseurl + "/")
                          .replaceAll(" />", ">")