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Thanks for that suggestion Tomasz. I did pretty much the same thing as that example. I was grateful that the text background was transparent, but it still can be hard to read when you are using candlestick charts that draw over the text.
I ended up putting the text in a separate panel just below the chart. Much easier to read and gets the job done. Even though the fractional blend would have been cooler, it probably would still be more difficult to read than the separate panel solution.
However, I am now experimenting with styleArea for the price chart and I am wishing I could make it semi-transparent so that I can see the grid lines through it. Perhaps you have an example of drawing an area price chart below the grid, or drawing the horizontal grid lines on top of the price chart?
Thanks,
Chris
--- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@xxx> wrote:
>
> Alpha? no, because that means fractional blend on each screen pixel separately -> SLOW
>
> You can however use Gfx functions to create all kinds of layered display with custom backgrounds like shown
> http://www.amibroker.com/kb/2008/04/21/big-symbol-text-in-the-background/
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: "ganamide" <ganamide@xxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Thursday, April 16, 2009 6:30 AM
> Subject: [amibroker] Alpha, Semi-Transparent , or Translucent Colors
>
>
> > Hi,
> >
> > I've been trying to draw the name of a symbol along with its one day percent gain/loss as background text in my charts, but I am
> > finding that it sometimes is difficult to read under the candlestick price data. I was wondering if it would be possible to
> > specify an alpha, or transparency, value to the colors of various things to facilitate this. For instance, if I could make my text
> > 50% transparent, I could draw it on top of the chart and see both layers better. I haven't been able to find anything in afl that
> > supports this, so I assume that it would need to be added. An AFL function such as ColorARGB( alpha, red, green, blue) or
> > ColorRGBA would be nice.
> >
> > Any thoughts on this?
> >
> > Thanks,
> > Chris
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