On Tue, 22 Oct 2019 20:13:51 +0800 (CST) Jing <[email protected]> said:
> Hi Carsten, > Thanks for your reply. I want to dynamically display different images in my > GUI, the images are read from SD card. How to add this feature ？ Please > help，thanks. many ways. you can use a basic evas image object (evas_object_image_add) then set the file on it and query size, set min/max size hints so edje will do the right thing in sizing the object. swallow this object into the right swallow part name. efl, enlightenment, terminology, rage is full of code like this. you can use an elm image which will handle async loading for you and some other things if you want to pass off that handling to elementary. it all depends on your existing code and where you have started from. are you using a raw edje object. en elm layout (which wraps edje objects)? what other objects and code are you using? > At 2019-10-22 16:45:55, "Carsten Haitzler (The Rasterman)" > <[email protected]> wrote: > >On Tue, 22 Oct 2019 15:03:47 +0800 (CST) Jing <[email protected]> said: > > > >> Hi all， > >> I define a IMAGE part in my EDC file with a default image. And call > >> evas_object_image_file_set() to display a new image. But when other parts > >> receive a signal or event, this IMAGE part will return to display the > >> default png image, please advise how to fix this issue, many thanks. > > > >never do that. the image is owned/controlled by edje. you are not meant to > >modify the object of an edje part in any way. also don't rely on it always > >existing. it may be deleted and re-created. you do not own this object. the > >edje parent does. > > > >if you want to have an image you can control, then SWALLOW parts are for > >that. you provide an object to edje to "swallow into" the part. this means > >edje will do these things to the swallowed object: > > > >1. move + resize this object > >2. stack it (raise/lower etc.) > >3. take over layer controls (just don't mess with the layer to begin with) > >4. show/hide as needed > >5. set clipper > >6. apply any evas maps > >7. control pass/repeat events flags > > > >when the edje parent is deleted, child swallowed objects are orphaned (they > >are kicked out of the parent edje) and it's up to you to clean them up or > >re-use them as needed. > > > >so create an image and then swallow this image object into a SWALLOW part. > > > > > >-- > >------------- Codito, ergo sum - "I code, therefore I am" -------------- > >Carsten Haitzler - [email protected] -- ------------- Codito, ergo sum - "I code, therefore I am" -------------- Carsten Haitzler - [email protected] _______________________________________________ enlightenment-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/enlightenment-devel
