[BATIK-871] setOpaque(false) not honoured

• Type: Bug
• Status: Resolved
• Resolution: Incomplete
• Affects Version/s: 1.7
• Component/s: GVT
• Environment: Operating System: All; Platform: All
• Assignee: Batik Developer's Mailing list
• Reporter: James D
• Created: 05/Dec/08 03:59
• Updated: 09/Dec/08 02:26
• Resolved: 09/Dec/08 02:26

Description

JSVGCanvas and JSVGComponent ignore setOpaque() and always draw a background

I think it's becuase
AbstractJGVTComponent.paintComponent
always does this...

g2d.setComposite(AlphaComposite.SrcOver);
g2d.setPaint(getBackground());
g2d.fillRect(visRect.x, visRect.y,
visRect.width, visRect.height);

but perhaps this should be wrapped in a isOpaque check?

if{isOpqaue())
{
g2d.setComposite(AlphaComposite.SrcOver);
g2d.setPaint(getBackground());
g2d.fillRect(visRect.x, visRect.y,
visRect.width, visRect.height);
}

current workaround (which maybe processor heavy) is to set the component background to a color with a alpha channel set to 0 (e.g. setBackground(new Color(0,0,0,0));