[SOLVED] BGRABitmap and fpGUI Draw problem
lazarus / 39-Graphics

----------------------------------------------------------------------
lainz · 2016-07-20 21:46

Hi, I'm creating a theme like I did for Custom Drawn (everything is
the same and the method is similar).

The problem I have is when I call bmp.Draw(ACanvas, Rect(x, y, w, h))
there is a crash- The problem does not exist if I use the
Draw(ACanvas, 0, 0) but I need to use the rect method.

Any ideas?

The source is here (BGRAControls on GitHub), and the line in wich
crashes:
https://github.com/bgrabitmap/bgracontrols/blob/master/test/test_extra
/fpGUI%20theme/mystyle.pas#L552

----------------------------------------------------------------------
lainz · 2016-07-21 01:45

My fault, it's working

The parameter is a Rect and I used W and H instead of Right and
Bottom.

This is the working code:
Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i
bmp.Draw(ACanvas, Rect(x, y, x+w, y+h));

----------------------------------------------------------------------
Graeme · 2016-07-21 09:25

I had a brief look at your bitmap based theme. I've started some work
on such a theme as well. I like your idea of reading the images and
ini info out of a zip file. Makes much much easier deployment.

As for the hardcoded initial 96 dpi value. You can read the runtime
system dpi from fpgApplication.Screen_dpi.

----------------------------------------------------------------------
lainz · 2016-07-21 16:06

Quote from: Graeme on July 21, 2016, 11:25:07 amI had a brief look at
your bitmap based theme. I've started some work on such a theme as
well. I like your idea of reading the images and ini info out of a zip
file. Makes much much easier deployment.

As for the hardcoded initial 96 dpi value. You can read the runtime
system dpi from fpgApplication.Screen_dpi.

Ok I must think that fpgApplication.Screen_dpi is the current Windows
setting of DPI. I can use it but I also need to use 96 because is the
"Designed" DPI.

Try to run my demo changing Windows DPI settings (to 125% or 150%).
You will see that the controls and the form are scaled properly.

Also I need to add manifest (also if I don't use windows themes) for
the DPI-Aware setting that must be on in order to get a non-blurry
form.

----------------------------------------------------------------------
Graeme · 2016-07-22 10:28

As I mentioned on Github, I already have a High DPI branch where I
introduced a fpgApplication.DesignedDPI property for exactly that
reason.  I'll try and get that branch completed ASAP and merge it into
the main branches. That should make your life a lot easier.

----------------------------------------------------------------------
lainz · 2016-07-22 11:58

Thanks for your work.