[EMAIL PROTECTED] wrote: > On Mon, Aug 21, 2006 at 05:33:26PM +0100, Essien Ita Essien wrote: > >> Carsten Haitzler (The Rasterman) wrote: >> >>> On Mon, 21 Aug 2006 16:11:52 +0200 Simon TRENY <[EMAIL PROTECTED]> babbled: >>> >>> >>> >>>> On Mon, 21 Aug 2006 14:36:05 +0100, >>>> Essien Ita Essien <[EMAIL PROTECTED]> wrote : >>>> >>>> >>>> >>>>> Carsten Haitzler (The Rasterman) wrote: >>>>> >>>>> >>>>>> On Mon, 21 Aug 2006 13:55:45 +0100 Essien Ita Essien >>>>>> <[EMAIL PROTECTED]> babbled: >>>>>> >>>>>> no attachment :) >>>>>> >>>>>> but - note the livethumb uses a BUFFER canvas - it sets the >>>>>> resolution of the BUFFER canvas to be higher than the output. make >>>>>> this resolution high enough (eg 800x600) and evas will scale that >>>>>> 800x600 "buffer" canvas down to the size of the output of the >>>>>> preview. that is how the livethumb works. >>>>>> >>>>>> >> uhh... i'm going to have to bug you once more. *brainbox* <----- >> buffer_overflow ;) >> >> I've been staring at e_livethumb.c and e_widget_preview , >> e_int_config_theme.c, where it is used and trying to develop an >> understanding of the relationships so far, i'm missing a tiny link. >> >> As I understand (from a day+ of Esmart/Evas/Ecore_Evas induction), when >> I'm creating an evas esmart object, I create all my individual evas >> objects, poke them into the esmart data and write call backs that >> manipulate. In my initializer, I take an evas, add the esmart object to >> it and this action results in an Evas_Object that is linked to my evas >> and is an instance of my esmart. Once I manipulate this new evas object, >> i'm well and happy. >> >> *please correct me if i'm wrong at any step* >> >> Now, for using the buffer canvas, I don't seem to see how to relate the >> ecore_evas_object_image_new() that i create to the rest of the esmart >> objects. Normally, in the examples I've seen and the minientrance code I >> sent, I had a *clip* member that was an evas_rectangle (honestly, I'm >> not sure what that clip is used for :) ), but when I created by >> background object and main object, i set their clip to the internal clip >> object, and in the clip_set callback, i set the passed in clip to the >> internal clip. This is how I seem to see that all the objects in my evas >> get linked together. >> > > A clip makes objects only show up within the bounds of the clip object. > E.g clipping A to B below will result in C: > > +--------------+ > | | > +---+---+ | +---+ > | A | B | | C | > +---+---+ | +---+ > | | > +--------------+
ahh... i c. i suspected, but didn't want to assume anything :) > > >> >> Looking at e_livethumb, I see that the ecore_evas_object_image is >> created and a smart member is set on it (that's where I first start >> getting confused.) >> > > "Smart members" are the sub objects of a smart objects. You tell evas > that each of your 100 little pieces that make up the smartobj are > members, and it does some stuff for you (keeps them layered together, > etc). > So this means that instead of manually building the evas_smart by going the normal route, i can dynamically assemble a quick and dirty evas_smart object using the smart_member_add() then? cool. > >> Next, in e_livethumb_thum_set(), I was expecting that i'd see the thumb >> member being somehow linked to the buffer canvas (evas_obj), but its not >> happening. Instead the thumb is being sized on its own. >> >> So my question really is how do these hook up together, when using the >> buffer canvas. I'm sure i'm missign something small, but i just can't >> seem to see it. :) >> > > The buffer canvas is a fullblown evas of its own. Its contents are being > displayed in an image on your primary evas. What you'll want to do is > add you smart object to the BUFFER evas. The buffer canvas will have a > fixed size that you set. The rendered version of that gets scaled to the > size of the image object. > with all the help i've gotten on this so far, I now have a perfect understanding of things. My missing link was how to obtain the evas from the buffer canvas. CodeWarrior's examples cleared this up more than nicely :) thx > > > ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ enlightenment-devel mailing list enlightenment-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/enlightenment-devel
