On Thu, Mar 18, 2010 at 7:31 PM, Alan W. Irwin
wrote:
> On 2010-03-18 17:55-0400 Hezekiah M. Carty wrote:
>
>> On Thu, Mar 18, 2010 at 5:34 PM, Alan W. Irwin
>> wrote:
>>>
>>> On 2010-03-18 16:26-0400 Hezekiah M. Carty wrote:
>>>
[...] From what I have read so
far, having nicely wi
Hi, Hez,
On Mar 18, 2010, at 21:16 , Hezekiah M. Carty wrote:
> The checkerboard background seems to be a semi-standard approach for
> viewing transparent images (Gimp uses something similar). I'm not
> sure it is a good idea for our interactive devices though, as it makes
> it very difficult to
On 2010-03-18 20:13-0400 Hazen Babcock wrote:
> So, while I agree that we should support this feature I don't think it
> is going to be that cool for most linux users for a while yet.
Although, I don't have any of the transparency troubles you mentioned for
your X server, I do have some mediocre
Alan W. Irwin wrote:
>
> For my two X servers
>
> display -immutable test.png.2
>
> gives me (a), i.e., a semi-transparent view where I can see the desktop
> underneath the image.
This is slightly off topic, but this effect really doesn't seem to work
that well on Gnome, at least for me.
This
On 2010-03-18 17:55-0400 Hezekiah M. Carty wrote:
> On Thu, Mar 18, 2010 at 5:34 PM, Alan W. Irwin
> wrote:
>> On 2010-03-18 16:26-0400 Hezekiah M. Carty wrote:
>>
>>>
>>> [...] From what I have read so
>>> far, having nicely window-manager independent transparent backgrounds
>>> for the xcairo (
On Thu, Mar 18, 2010 at 5:34 PM, Alan W. Irwin
wrote:
> On 2010-03-18 16:26-0400 Hezekiah M. Carty wrote:
>
>>
>> [...] From what I have read so
>> far, having nicely window-manager independent transparent backgrounds
>> for the xcairo (and xwin and possiblt qtwidget) devices would require
>> pull
On 2010-03-18 16:26-0400 Hezekiah M. Carty wrote:
> The fix for pngcairo is fairly straightforward. The pngcairo device
> was using an RGB surface rather than an ARGB surface, so the Cairo
> drawing routines were treating it like it does not support
> transparency (which it didn't). Changing the
On Mon, Mar 15, 2010 at 10:15 PM, Alan W. Irwin
wrote:
> On 2010-03-15 20:38-0400 Hazen Babcock wrote:
>
>> The problem is that we currently do not allow any choices. The cairo driver
>> is explicitly starting with a non-transparent white background. It is not as
>> clear to me exactly what the Qt
On 2010-03-15 21:44-0700 David MacMahon wrote:
> I'm no expert on the PLplot devices, but my understanding is that the xcairo
> device is a cairo "widget" or "surface" drawn in a "regular" X window that
> has its own background. If that's the case, then perhaps we would need to
> create the wi
Hi, Alan,
On Mar 15, 2010, at 17:49 , Alan W. Irwin wrote:
> On 2010-03-15 15:49-0700 David MacMahon wrote:
>
>> Using a very recent ImageMagick (6.6.0), "display" gives me the
>> checkerboard background without the "-immutable" option and a
>> black background with that option when looking a
On 2010-03-15 20:38-0400 Hazen Babcock wrote:
> The problem is that we currently do not allow any choices. The cairo driver
> is explicitly starting with a non-transparent white background. It is not as
> clear to me exactly what the Qt driver is doing when it starts a new page,
> though I don'
On 2010-03-15 15:49-0700 David MacMahon wrote:
>
> On Mar 15, 2010, at 14:32 , Alan W. Irwin wrote:
>
>> Then "display -immutable test_transparent.png"
>>
>> really does show the desktop underneath the plot which indeed is a
>> really cool-looking effect.
>
> Using a very recent ImageMagick (6.6.
David MacMahon wrote:
>
>> (Without that -immutable option, display replaces a transparent
>> background
>> with a checkerboard background which apparently is something of an
>> industry
>> standard to signal you really do have a transparent background.)
>
> I agree that this *can be* a reall
On Mar 15, 2010, at 14:32 , Alan W. Irwin wrote:
> Then "display -immutable test_transparent.png"
>
> really does show the desktop underneath the plot which indeed is a
> really cool-looking effect.
Using a very recent ImageMagick (6.6.0), "display" gives me the
checkerboard background without
On 2010-03-14 11:32-0700 Alan W. Irwin wrote:
> On 2010-03-14 10:50-0500 Hezekiah M. Carty wrote:
>> Revision 10866 should fix this. If the background color has an alpha
>> value < 1.0 then a white surface is drawn before the transparent
>> background color. This produces good looking results fo
Alan W. Irwin wrote:
> On 2010-03-13 13:16-0800 Alan W. Irwin wrote:
>
>> On 2010-03-13 14:45-0500 Hazen Babcock wrote:
>>
>>> Alan W. Irwin wrote:
Hazen, will you have a look at this issue, please? This transparent
background issue does not appear for, e.g., -dev pscairo so it appears
On 2010-03-14 10:50-0500 Hezekiah M. Carty wrote:
Hmm. after updating to get your fix and "make cairo" I still get the same
(bad) result (with page 1 still visible underneath) for
examples/c/x02c -dev xcairo -bg FF_0.1
examples/c/x02c -dev qtwidget -bg FF_01
On Sun, Mar 14, 2010 at 9:54 AM, Hezekiah M. Carty
wrote:
> On Sat, Mar 13, 2010 at 5:12 PM, Alan W. Irwin
> wrote:
>> On 2010-03-13 13:16-0800 Alan W. Irwin wrote:
>>
>>> On 2010-03-13 14:45-0500 Hazen Babcock wrote:
>>>
Alan W. Irwin wrote:
>
> Hazen, will you have a look at this i
On Sat, Mar 13, 2010 at 5:12 PM, Alan W. Irwin
wrote:
> On 2010-03-13 13:16-0800 Alan W. Irwin wrote:
>
>> On 2010-03-13 14:45-0500 Hazen Babcock wrote:
>>
>>> Alan W. Irwin wrote:
Hazen, will you have a look at this issue, please? This transparent
background issue does not appear
On 2010-03-13 13:16-0800 Alan W. Irwin wrote:
> On 2010-03-13 14:45-0500 Hazen Babcock wrote:
>
>> Alan W. Irwin wrote:
>>> Hazen, will you have a look at this issue, please? This transparent
>>> background issue does not appear for, e.g., -dev pscairo so it appears this
>>> issue may be specific
On 2010-03-13 14:45-0500 Hazen Babcock wrote:
> Alan W. Irwin wrote:
>> Hazen, will you have a look at this issue, please? This transparent
>> background issue does not appear for, e.g., -dev pscairo so it appears this
>> issue may be specific within the cairo devices to just -dev xcairo although
Alan W. Irwin wrote:
> On 2010-03-10 00:43-0800 David MacMahon wrote:
>
>> I just ran this...
>>
>> x02c -dev xcairo -bg ff_0.3
>>
>> ...and noticed on the second plot I can "see through" to the first
>> plot. I don't think I have any other non-cairo, alpha-capable
>> drivers built so I can't
On Mar 10, 2010, at 11:05 , Alan W. Irwin wrote:
> There are already
> some neat transparent background effects being deployed on the desktop
> (e.g., if you move a KDE GUI it becomes transparent so you can see
> underneath it) that show this is possible.
I think this might be a property of the
On 2010-03-10 10:15-0800 David MacMahon wrote:
> I'm not really sure how to interpret alpha for the background of a GUI
> window. What's behind the background to see through too? For graphics files
> (e.g. .png or .svg) they might be overlaid on something else so background
> transparency the
Thanks for confirming this, Alan!
On Mar 10, 2010, at 8:09 , Alan W. Irwin wrote:
> -dev qtwidget does not have this problem, and neither does -dev
> svg. (For
> the latter, you must use the familying option -fam which will
> generate two
> files corresponding to the two pages.)
I don't know
On 2010-03-10 00:43-0800 David MacMahon wrote:
> I just ran this...
>
> x02c -dev xcairo -bg ff_0.3
>
> ...and noticed on the second plot I can "see through" to the first
> plot. I don't think I have any other non-cairo, alpha-capable
> drivers built so I can't tell if it's cairo-related or m
I just ran this...
x02c -dev xcairo -bg ff_0.3
...and noticed on the second plot I can "see through" to the first
plot. I don't think I have any other non-cairo, alpha-capable
drivers built so I can't tell if it's cairo-related or more general.
Here are the devices I have available...
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