[BATIK-1024] Text decoration in text tag is not painted properly when using different font sizes

• Type: Bug
• Status: Open
• Resolution: Unresolved
• Affects Version/s: 1.8
• Component/s: GVT Text
• Environment: Operating System: Linux; Platform: PC
• Assignee: Batik Developer's Mailing list
• Reporter: Mario Ganzeboom
• Created: 04/Oct/12 11:04
• Updated: 04/Oct/12 12:18

Description

While testing a custom text editing component for the application I'm working on using Batik, I found that underline, overline and line-through text decorations aren't positioned correctly when different font sizes are used.

I observed this behaviour when using a text tag embedded with tspan tags.

Steps to reproduce:
1. Do a fresh checkout of the trunk sources (at time of writing: 1378739)
2. Download this bug report's SVG attachment.
3. Start the Squiqqle browser from the checked out sources.
4. Load the attachment in the Squiqqle browser.

Actual results:
As the attachment shows, both text tags contain two words displayed in a different font size. Both have underline, overline and line-through decorations. For the first word the y-position and thickness of the lines is calculated correctly. However, for the second word (which is in a different font size) the lines are positioned on the same y value and have the same thickness.

Expected results:
The 'line' text decorations should have been positioned on different y values, each corresponding to their font size. Dito for the line thickness.