Hi Gonzalo, On 12 Aug 2011, at 16:25, Gonzalo Odiard <gonz...@laptop.org> wrote:
> Gary, > We are looking if this can land one of this in 0.94 > I am proposing land the first version, already reviewed by Simon and Sasha, > and improve it later with your suggestion. > In fact, I think what you are proposing is simpler than what I did. > Is this a good alternative for you? +1, with the understanding that we do try to land the improved version at some point and not let it fall off our radar :) --Gary > Gonzalo > > On Thu, Aug 11, 2011 at 2:24 PM, Gary Martin <garycmar...@googlemail.com> > wrote: > Hi Gonzalo, > > On 5 Aug 2011, at 20:47, Gonzalo Odiard wrote: > > > I have prepared a few videos to show the change in the startup animation I > > am proposing > > In all the videos, at the right is one XO with the patch and the left is > > another without the patch, > > the method to compare the times is not very scientific, but I have tried to > > start the activities at the same time :) > > > > In the first test, I used alpha and scale cairo operations to modify to > > render only one time the icon > > you can see the zoom effect at the start and a little improvement in > > startup time: > > > > http://www.youtube.com/watch?v=dE7eXjsQm_g > > > > http://www.youtube.com/watch?v=nHqcdsAFvgE > > > > http://www.youtube.com/watch?v=g4qMB4eayU4 > > Fab! That's a good 2 or 3 seconds shaved off activity start time, a very > important metric, even given we loose the original pulse design (i.e. pulsing > between grey+white & user colours provides better contrast; the monochrome to > colour also suggests an activity bundle starting up and becoming a users own > activity). > > Are these two test machines XO-1, or XO-1.5s? > > Regarding the zoom effect, it's great it is finally showing up ;-) but I > wonder if the timing is different, it feels very slow/smooth/linear, is it > using the same zoom maths as on previous Sugars? I'll need to have a tinker > to see/check how it used to be. > > > If you want test in your system, you can download > > http://dev.laptop.org/~gonzalo/alpha-pulsingicon/files_animation.zip > > and copy the files in the directory pulse in the following directories: > > icon.py -> /usr/lib/python/python2.7/site-packages/sugar/graphics/ > > launcher.py and pulsingicon.py -> > > /usr/lib/python/python2.7/site-packages/jarabe/view/ > > > > The patches are: > > http://dev.laptop.org/~gonzalo/alpha-pulsingicon/Add-alpha-and-scale-functionality-to-the-icon-can-be-used-in-the-launcher-to-do-the-animation---v2.patch > > http://dev.laptop.org/~gonzalo/alpha-pulsingicon/0001-Do-startup-animation-of-the-activity-icon-using-scal.patch > > > > You can see the effect is different, and may be is not so good like the > > original. > > > > I did another try using two buffers, with the different colors, and > > changing the alpha > > to obtain a similar effect. The code is a lot more complex, and is a little > > slower obviously. > > > > http://www.youtube.com/watch?v=9rLaE0TKZXw > > > > http://www.youtube.com/watch?v=-Q2RliMTLRM > > > > http://www.youtube.com/watch?v=SHBCSnrGsjA > > I do find these more visible as the grey/white stage of the pulse is > guaranteed to provide some contrast even if the user has chosen a fill/stroke > combination with low contrast. However, the cost seems rather high with only > about 1sec launch time improvement and twice as much code to maintain. > > Quick question about your second version (I couldn't quite grok my way > through the patch). Are you 1) fading both the grey and the colour versions > of the image so that as one becomes opaque, the other becomes transparent; or > 2) drawing one in the background always as an opaque fill, and then just > pulsing the other over the top from opaque to transparent? In my code (non > Sugar) I find the latter choice keeps code to a minimum, is more efficient, > and visually looks cleaner (avoids the white background leaking through > during part of the cycle). > > Here's a quick video if I didn't describe the above effect well enough > (middle is alpha fading both images, right is the simple case of a single > fade in/out for comparison, and left is using the monochrome image as an > opaque background fill while drawing the colour image over the top with an > alpha puse): > > http://youtu.be/LLsqjGWBMfQ > > Regards, > --Gary > > > The patchs are: > > > > http://dev.laptop.org/~gonzalo/alpha-pulsingicon/0001-Add-alpha-to-icon-and-secondary-buffer-to-implement-.patch > > > > http://dev.laptop.org/~gonzalo/alpha-pulsingicon/0001-Do-startup-animation-using-alpha-scale-and-a-seconda.patch > > > > If you want test in one XO can use the files in the directory > > pulse-doublebuf in the files_animation.zip > > > > I want include this in 0.94, thoughts? > > > > Gonzalo > > > > _______________________________________________ > > Sugar-devel mailing list > > Sugar-devel@lists.sugarlabs.org > > http://lists.sugarlabs.org/listinfo/sugar-devel > >
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