That’s good to know! Then it must have been something else I was struggling with - perhaps it had to do with getting a snapshot of the content of a browser widget…? That would still present problems in certain (all?) platforms, right?
tors 8 aug. 2024 kl. 14:39 skrev Mark Waddingham via use-livecode < use-livecode@lists.runrev.com>: > On 2024-08-08 10:22, Jimmieson, Phil via use-livecode wrote: > > Hi folks, > > I’m experimenting with converting one of my LiveCode iPad Apps into a > > web version, to see how well it works, but there’s an issue that seems > > to be a deal-breaker. My iPad app takes a screenshot of the LiveCode > > stack when the user navigates away from the main card, so that the > > image can be used elsewhere in the app. This works fine on iPad, but I > > noticed that the web version of the app generates a javascript > > exception when I try to leave the main card. On checking the > > dictionary, I noticed that the export snapshot command is not listed as > > being supported on web. Is this correct? If so, is there an alternative > > that will work for web? > > So 'export snapshot from screen' is not supported - this is the form > which takes the pixel data from the actual (composited) screen buffer. > > However, there is an alternate form which is entirely internal to the > engine: > > export snapshot from [ rect <rect> of ] <object> > > To use the internal form for a card you can do: > > export snapshot from this card > > Or if you want a portion of the card: > > export snapshot from rect 0,0,100,100 of this card > > Further there is an `at size <width>,<height>` clause which allows you > to specify the size you want the resulting image. > > The difference here is that the internal form replicates the same > process that the engine uses to render objects to a window - it renders > the given rectangle of the object into a rect of the specified size (or > the size of the rect/object if 'at size' is not specified). > > In contrast, the 'external' form has to ask the OS for the given > rectangle of the actual screen's framebuffer. > > Hope this helps, > > Mark. > > -- > Mark Waddingham ~ m...@livecode.com ~ http://www.livecode.com/ > LiveCode: Build Amazing Things _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
