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  How to draw a playing card : Canvas vs JPanel  (Read 3171 times)
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Offline horizonttc

Junior Newbie

« Posted 2007-07-09 07:45:10 »

I wonder which class btw Canvas and JPanel is better to draw a playing cards?

Offline keldon85

Senior Devvie

Medals: 1

« Reply #1 - Posted 2007-07-09 08:46:42 »

Either! Although a Canvas belogns to java.awt, while JPanel is part of javax.swing.

Offline Markus_Persson

JGO Wizard

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« Reply #2 - Posted 2007-07-09 08:53:53 »

I'd suggest JComponent over JPanel, actually.

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Offline keldon85

Senior Devvie

Medals: 1

« Reply #3 - Posted 2007-07-09 09:06:40 »

I'd suggest JComponent over JPanel, actually.

For what reason? Less overhead maybe?

Offline horizonttc

Junior Newbie

« Reply #4 - Posted 2007-07-09 09:15:15 »

Thanks for all quick answers Smiley

A playing card simply need to display an image and response to mouse event. I just want to use the right tool for the job. I consider JPanel  a bit wasted for drawing a card. Can you give me technical proof of your choice ?
Offline broumbroum

Junior Devvie

« Reply #5 - Posted 2007-07-09 23:46:28 »

you might get better perf' with a simple Canvas than Components over a Panel. Canvas can be added to any Container including the Panel.
Canvas has an opaque property and gets directly to VRAM buffers. While JPanels may have a simplier approach and Double Buffering, its still a good idea to try an impl. of Canvas because of all the constraints you can encounter with Layout etc. BTW cards game don't use much VRAM since it is pretty statical to display a game-card !!! LOL 

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