Re: gdiplus: Add support for horizontal string alignment to GdipDrawString

[Vincent Povirk]

This looks wrong to me. You're only adjusting the left coordinate, but
in case of a rotation in the world transform, you'll need to adjust
the top as well.

Also, I think you may still be able to use DT_CENTER and DT_RIGHT
rather than measuring the string beforehand. Creating a rectangle
something like the original is difficult, but DrawText probably only
needs to know the top-center or top-right point to do these other
alignments. So it should be able to align things properly if you give
it a rectangle where all corners are the point where it anchors the
text.

DrawText doesn't need the original rectangle because gdiplus does the
clipping and wrapping (and it already doesn't get the original
rectangle anyway).

Vincent Povirk



On Sat, Jun 6, 2009 at 2:19 PM, Stephan Rose<kermos(a)somrek.net> wrote:
> Adds support for horizontal string alignment to GdipDrawString without
> using DT_CENTER or DT_RIGHT.

gdiplus: Add support for horizontal string alignment to GdipDrawString

[Stephan Rose]

On Sun, 2009-06-07 at 19:53 -0500, Vincent Povirk wrote:
> This looks wrong to me. You're only adjusting the left coordinate, but
> in case of a rotation in the world transform, you'll need to adjust
> the top as well.
>
> Also, I think you may still be able to use DT_CENTER and DT_RIGHT
> rather than measuring the string beforehand. Creating a rectangle
> something like the original is difficult, but DrawText probably only
> needs to know the top-center or top-right point to do these other
> alignments. So it should be able to align things properly if you give
> it a rectangle where all corners are the point where it anchors the
> text.

Well it'd have to be top left and top right. Given those two, top center
will be determined by DrawText on it's own when given DT_CENTER
alignment. 

Ok I think that I'm really going to have to do is make a rotated test
app to see what happens. Only 'issue' here is that I am not even
remotely setup here at home for writing / compiling any kind of native
windows software. While I have a windows installation, use it like maybe
once every couple weeks for some occasional gaming.

Is there any easy way for me to do this under linux? MingW I suppose?

Thanks,

Stephan

gdiplus: Add support for horizontal string alignment to GdipDrawString

[Vincent Povirk]

On Sun, Jun 7, 2009 at 8:27 PM, Stephan Rose<kermos(a)somrek.net> wrote:
> Well it'd have to be top left and top right. Given those two, top center
> will be determined by DrawText on it's own when given DT_CENTER
> alignment.
>
> Ok I think that I'm really going to have to do is make a rotated test
> app to see what happens. Only 'issue' here is that I am not even
> remotely setup here at home for writing / compiling any kind of native
> windows software. While I have a windows installation, use it like maybe
> once every couple weeks for some occasional gaming.
>
> Is there any easy way for me to do this under linux? MingW I suppose?

Mingw should work. I've found sometimes that the mingw headers and
libraries have been inadequate, and I've had to compile with the
switches used by "make crosstest". I think they'll be good enough in
this case.

Technically, you could also run the test case using native gdiplus in
Wine. In that case you could use winegcc. But I think you'll want to
set up mingw anyway so you can compile Wine tests for Windows.

Vincent Povirk