Mattias Gaertner wrote:
There has to be a faster way to get data to the screen in a cross-platform fashion (I'm developing
on Linux but ultimately I'll be compiled for OSX and Win32).
Paint onto a memory image and then draw that.
As memory image you can use TBitmap which has comfortable fonts, but
is not the fastest.
So, taking into account your comment "is not the fastest" I thought I'd give a plain TBitmap a try.
It's by _far_ the fastest I've tried yet. So fast in fact that I really can't time it using
Millisecondsbetween(). Amazing.
I have 2 TBitmaps assigned globally. One I pre-prepare with my background (stuff, graticule and
other lines) every time there is a resize.
In the OnPaint() handler I copy the contents of the background TBitmap to the foreground TBitmap,
then draw a couple of thousand lines on it before copying it to the canvas of a panel (I'm using a
TPanel as the display component) using Panel.Canvas.Copy() to copy the canvas from the foreground
bitmap. I can't believe how fast it is.
Best of all, it requires no new components or packages :)
Regards,
Brad
--
Dolphins are so intelligent that within a few weeks they can
train Americans to stand at the edge of the pool and throw them
fish.
--
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