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From: Tilen Jez on 24 Jan 2007 17:47
Hi,

wxScrolledWindow::DoPrepareDC() does not properly "prepare" the y-
coordinate of the scrolled position in wxMac 2.8.0. The x-coordinate
is set properly. Also, wxMac 2.6.3 works as expected.

Given that the scrollbars are moved from the default position, the
following will draw a circle at the correct (scrolled) x-coordinate
and not correct (device coordinate) y-coordinate position on wxMac
(it behaves as expected under wxMSW):

wxClientDC dc(wxGetApp().scrolledWindow);
wxGetApp().scrolledWindow->DoPrepareDC(dc);
dc.DrawCircle(100, 100, 50);

However the following will work correctly on both platforms:

wxClientDC dc(wxGetApp().scrolledWindow);
scrolledWindow->CalcScrolledPosition(100, 100, &x, &y);
dc.DrawCircle(x, y, 50);

Can I safely use CalcScrolledPosition() and not bother with
DoPrepareDC() at all on all platforms, or are there more things to
take care of in scrolled position?

Best Regards,
Tilen


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From: "Stefan Csomor" on 25 Jan 2007 03:15
Hi

It would be best not to use wxClientDC but wxPaintDC anyway, but I'll
check whether I can fix things with a wxClientDC as well, I had to
resort to a deferred creation that only happens at the moment you first
draw on a wxClientDC, because it is a expensive operation such an
out-of-order draw, so I guess the transformation matrix wasn't up to
date. Is this a 2.8.0 download or does it also happen with CVS HEAD ?

Thanks,

Stefan

> -----Original Message-----
> From: Tilen Jez [mailto:tilen.jez(a)ambitiongroup.com]
> Sent: Mittwoch, 24. Januar 2007 23:47
> To: wx-users(a)lists.wxwidgets.org
> Subject: wxScrolledWindow problems in wxMac 2.8.0
>
> Hi,
>
> wxScrolledWindow::DoPrepareDC() does not properly "prepare" the y-
> coordinate of the scrolled position in wxMac 2.8.0. The x-coordinate
> is set properly. Also, wxMac 2.6.3 works as expected.
>
> Given that the scrollbars are moved from the default position, the
> following will draw a circle at the correct (scrolled) x-coordinate
> and not correct (device coordinate) y-coordinate position on wxMac
> (it behaves as expected under wxMSW):
>
> wxClientDC dc(wxGetApp().scrolledWindow);
> wxGetApp().scrolledWindow->DoPrepareDC(dc);
> dc.DrawCircle(100, 100, 50);
>
> However the following will work correctly on both platforms:
>
> wxClientDC dc(wxGetApp().scrolledWindow);
> scrolledWindow->CalcScrolledPosition(100, 100, &x, &y);
> dc.DrawCircle(x, y, 50);
>
> Can I safely use CalcScrolledPosition() and not bother with
> DoPrepareDC() at all on all platforms, or are there more things to
> take care of in scrolled position?
>
> Best Regards,
> Tilen
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org
> For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org



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From: Tilen Jez on 25 Jan 2007 04:19
Hi,

Thanks for looking into this.

I have tried this with 2.8.0 download and 2.8.1 download dated
January 9th, but not with CVS HEAD. I would like to stick to the
stable release if at all possible.

Best Regards,
Tilen


On Jan 25, 2007, at 9:15 AM, Stefan Csomor wrote:

> Hi
>
> It would be best not to use wxClientDC but wxPaintDC anyway, but I'll
> check whether I can fix things with a wxClientDC as well, I had to
> resort to a deferred creation that only happens at the moment you
> first
> draw on a wxClientDC, because it is a expensive operation such an
> out-of-order draw, so I guess the transformation matrix wasn't up to
> date. Is this a 2.8.0 download or does it also happen with CVS HEAD ?
>
> Thanks,
>
> Stefan
>
>> -----Original Message-----
>> From: Tilen Jez [mailto:tilen.jez(a)ambitiongroup.com]
>> Sent: Mittwoch, 24. Januar 2007 23:47
>> To: wx-users(a)lists.wxwidgets.org
>> Subject: wxScrolledWindow problems in wxMac 2.8.0
>>
>> Hi,
>>
>> wxScrolledWindow::DoPrepareDC() does not properly "prepare" the y-
>> coordinate of the scrolled position in wxMac 2.8.0. The x-coordinate
>> is set properly. Also, wxMac 2.6.3 works as expected.
>>
>> Given that the scrollbars are moved from the default position, the
>> following will draw a circle at the correct (scrolled) x-coordinate
>> and not correct (device coordinate) y-coordinate position on wxMac
>> (it behaves as expected under wxMSW):
>>
>> wxClientDC dc(wxGetApp().scrolledWindow);
>> wxGetApp().scrolledWindow->DoPrepareDC(dc);
>> dc.DrawCircle(100, 100, 50);
>>
>> However the following will work correctly on both platforms:
>>
>> wxClientDC dc(wxGetApp().scrolledWindow);
>> scrolledWindow->CalcScrolledPosition(100, 100, &x, &y);
>> dc.DrawCircle(x, y, 50);
>>
>> Can I safely use CalcScrolledPosition() and not bother with
>> DoPrepareDC() at all on all platforms, or are there more things to
>> take care of in scrolled position?
>>
>> Best Regards,
>> Tilen
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org
>> For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org
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>
>


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From: "Stefan Csomor" on 25 Jan 2007 03:57
Hi Tilen

Yes, WX_2_8_BRANCH has been created after the 2.8.1 drop

Best,

Stefan

> -----Original Message-----
> From: Tilen Jez [mailto:tilen.jez(a)ambitiongroup.com]
> Sent: Donnerstag, 25. Januar 2007 10:20
> To: wx-users(a)lists.wxwidgets.org
> Subject: Re: wxScrolledWindow problems in wxMac 2.8.0
>
> Hi,
>
> Thanks for looking into this.
>
> I have tried this with 2.8.0 download and 2.8.1 download dated
> January 9th, but not with CVS HEAD. I would like to stick to the
> stable release if at all possible.
>
> Best Regards,
> Tilen
>
>
> On Jan 25, 2007, at 9:15 AM, Stefan Csomor wrote:
>
> > Hi
> >
> > It would be best not to use wxClientDC but wxPaintDC anyway, but
> I'll
> > check whether I can fix things with a wxClientDC as well, I had to
> > resort to a deferred creation that only happens at the moment you
> > first
> > draw on a wxClientDC, because it is a expensive operation such an
> > out-of-order draw, so I guess the transformation matrix wasn't up
> to
> > date. Is this a 2.8.0 download or does it also happen with CVS
> HEAD ?
> >
> > Thanks,
> >
> > Stefan
> >
> >> -----Original Message-----
> >> From: Tilen Jez [mailto:tilen.jez(a)ambitiongroup.com]
> >> Sent: Mittwoch, 24. Januar 2007 23:47
> >> To: wx-users(a)lists.wxwidgets.org
> >> Subject: wxScrolledWindow problems in wxMac 2.8.0
> >>
> >> Hi,
> >>
> >> wxScrolledWindow::DoPrepareDC() does not properly "prepare" the y-
> >> coordinate of the scrolled position in wxMac 2.8.0. The x-
> coordinate
> >> is set properly. Also, wxMac 2.6.3 works as expected.
> >>
> >> Given that the scrollbars are moved from the default position, the
> >> following will draw a circle at the correct (scrolled) x-
> coordinate
> >> and not correct (device coordinate) y-coordinate position on wxMac
> >> (it behaves as expected under wxMSW):
> >>
> >> wxClientDC dc(wxGetApp().scrolledWindow);
> >> wxGetApp().scrolledWindow->DoPrepareDC(dc);
> >> dc.DrawCircle(100, 100, 50);
> >>
> >> However the following will work correctly on both platforms:
> >>
> >> wxClientDC dc(wxGetApp().scrolledWindow);
> >> scrolledWindow->CalcScrolledPosition(100, 100, &x, &y);
> >> dc.DrawCircle(x, y, 50);
> >>
> >> Can I safely use CalcScrolledPosition() and not bother with
> >> DoPrepareDC() at all on all platforms, or are there more things to
> >> take care of in scrolled position?
> >>
> >> Best Regards,
> >> Tilen
> >>
> >>
> >> ------------------------------------------------------------------
> ---
> >> To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org
> >> For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org
> >
> >
> >
> > -------------------------------------------------------------------
> --
> > To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org
> > For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org
> >
> >
>
>
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From: Tilen Jez on 25 Jan 2007 07:26
Hi Stefan,

Just to let you know that the same problem is present in CVS HEAD.

Best Regards,
Tilen

On Jan 25, 2007, at 9:57 AM, Stefan Csomor wrote:

> Hi Tilen
>
> Yes, WX_2_8_BRANCH has been created after the 2.8.1 drop
>
> Best,
>
> Stefan
>
>> -----Original Message-----
>> From: Tilen Jez [mailto:tilen.jez(a)ambitiongroup.com]
>> Sent: Donnerstag, 25. Januar 2007 10:20
>> To: wx-users(a)lists.wxwidgets.org
>> Subject: Re: wxScrolledWindow problems in wxMac 2.8.0
>>
>> Hi,
>>
>> Thanks for looking into this.
>>
>> I have tried this with 2.8.0 download and 2.8.1 download dated
>> January 9th, but not with CVS HEAD. I would like to stick to the
>> stable release if at all possible.
>>
>> Best Regards,
>> Tilen
>>
>>
>> On Jan 25, 2007, at 9:15 AM, Stefan Csomor wrote:
>>
>>> Hi
>>>
>>> It would be best not to use wxClientDC but wxPaintDC anyway, but
>> I'll
>>> check whether I can fix things with a wxClientDC as well, I had to
>>> resort to a deferred creation that only happens at the moment you
>>> first
>>> draw on a wxClientDC, because it is a expensive operation such an
>>> out-of-order draw, so I guess the transformation matrix wasn't up
>> to
>>> date. Is this a 2.8.0 download or does it also happen with CVS
>> HEAD ?
>>>
>>> Thanks,
>>>
>>> Stefan
>>>
>>>> -----Original Message-----
>>>> From: Tilen Jez [mailto:tilen.jez(a)ambitiongroup.com]
>>>> Sent: Mittwoch, 24. Januar 2007 23:47
>>>> To: wx-users(a)lists.wxwidgets.org
>>>> Subject: wxScrolledWindow problems in wxMac 2.8.0
>>>>
>>>> Hi,
>>>>
>>>> wxScrolledWindow::DoPrepareDC() does not properly "prepare" the y-
>>>> coordinate of the scrolled position in wxMac 2.8.0. The x-
>> coordinate
>>>> is set properly. Also, wxMac 2.6.3 works as expected.
>>>>
>>>> Given that the scrollbars are moved from the default position, the
>>>> following will draw a circle at the correct (scrolled) x-
>> coordinate
>>>> and not correct (device coordinate) y-coordinate position on wxMac
>>>> (it behaves as expected under wxMSW):
>>>>
>>>> wxClientDC dc(wxGetApp().scrolledWindow);
>>>> wxGetApp().scrolledWindow->DoPrepareDC(dc);
>>>> dc.DrawCircle(100, 100, 50);
>>>>
>>>> However the following will work correctly on both platforms:
>>>>
>>>> wxClientDC dc(wxGetApp().scrolledWindow);
>>>> scrolledWindow->CalcScrolledPosition(100, 100, &x, &y);
>>>> dc.DrawCircle(x, y, 50);
>>>>
>>>> Can I safely use CalcScrolledPosition() and not bother with
>>>> DoPrepareDC() at all on all platforms, or are there more things to
>>>> take care of in scrolled position?
>>>>
>>>> Best Regards,
>>>> Tilen
>>>>
>>>>
>>>> ------------------------------------------------------------------
>> ---
>>>> To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org
>>>> For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org
>>>
>>>
>>>
>>> -------------------------------------------------------------------
>> --
>>> To unsubscribe, e-mail: wx-users-unsubscribe(a)lists.wxwidgets.org
>>> For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org
>>>
>>>
>>
>>
>> ---------------------------------------------------------------------
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>> For additional commands, e-mail: wx-users-help(a)lists.wxwidgets.org
>
>
>
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>
>


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