Re: Drag-And-Drop Image Fun
Any further hints would be IMMENSELY appreciated! You could try setting the dragdata[image] to text of image 1 Only thing is this would override the whole text-image workaround. image 1 doesn't necessarily need to be PNG, any format will work. Rev will convert to the native format for the appropriate platform when dragging (PICT for MacOS, Bitmap for Windows). Tuviah Snyder [EMAIL PROTECTED] http://www.runrev.com/ Runtime Revolution Limited - Software at the Speed of Thought ___ use-revolution mailing list [EMAIL PROTECTED] http://lists.runrev.com/mailman/listinfo/use-revolution
Drag-And-Drop Image Fun
Greetings, I hope you will all tolerate the ignorance of a relatively new user. I am using REV1.1.1 on Windows XP pro I didn't read any of the threads about drag-and-drop connected with fields. However, after reading this thread on drag-and-drop for images (that has some bugs), it isn't exactly clear to me what the goal is. I can think of two possible cases with each using 2 possible "images": 1. simply dragging an image OR dragging some text (or other object) that represents an image and then dropping it into a "target", whereupon the actual image is displayed; 2. same as previous description except the Image (or its "reference") get COPIED and you drag the copy and drop it. For both cases, if a valid "targit" is not hit, then the start condtions are reset (i.e a dragged object gets returned to its start location.) It seems to me that perhaps the routine that Rev already has for cloning by holding down the Ctrl key and dragging an object combined with the grab command could be modified for this. (Sorry, but I don't know how to "access" the scripts in the REV stacks, nor do I have an idea where to look for it even if I knew how to access it.) Just by doing a couple of tests, I see that images can be grabbed and the intersect function used to determine if the target was reached. I put several empty image objects on a card, put 2 image objects with JPG files in them on the card, made a list (using a script) of all the image objects to use as valid targits, then grabbed an image and dropped it different places. If it intersected with a valid targit, the targit image object was resized to the size of the source image, then the imageData put into it. If a valid targit wasn't hit, then the source image was returned to its "home" location. This worked fine in a card script, so I could grab any of the images on the card. I was able to do it within the script limits of the unlicensed version. So, while the new function in REV2 would be more convenient to script, it looks like you are limited to only PNG files. If I could figure out how to do a drag-and-drop of an image, then I'm sure any of you experienced programmers could write with ease a good script to do it and get around the PNG limitiation. (Sorry if this is a little long winded. I don't make many posts, so I think my word count per month is still far below many other people's. LOL) Dan J. http://Game.37.com/ <--- Free Games http://newJoke.com/ <--- J O K E S ! ! !
Re: Drag-And-Drop Image Fun
Hello, Tuviah! Thank you so much for the feedback! - This was driving me insane! On Thursday, May 29, 2003, at 09:10 PM, Tuviah M Snyder wrote: Just tested it and there seems to be a bug where dragging and dropping images within Rev does not work. Will fix for 2.1. This is how it was supposed to work: (snip) I think you were probably typing a bit too fast :-D ... The code for the target image should have been: on dragenter if text is among the items of keys(the dragData) then set the acceptDrop to true end if end dragenter on dragdrop if text is among the items of keys(the dragData) then put base64decode(the dragdata[text]) into me end if pass dragdrop end dragdrop It works like a charm - for all types of images, not just PNG! However, it only works if dragging WITHIN Rev - not if you want to drag your picture to another app... The other apps now think we are dragging 'text'... Any further hints would be IMMENSELY appreciated! Many thanks, -- Igor de Oliveira Couto -- [EMAIL PROTECTED] -- ___ use-revolution mailing list [EMAIL PROTECTED] http://lists.runrev.com/mailman/listinfo/use-revolution
Re: Drag-And-Drop Image Fun
Dear Robert, Thank you for your reply: On Wednesday, May 28, 2003, at 10:59 PM, Robert Brenstein wrote: I think if you search list archives for DragDrop you will find an example of dragging a text or text field. I have been able to successfully work with drag-and-drop with text, but not with PICTURES. My original posting, in regards to the 2 problems I encountered with drag-and-drop: PROBLEM 1: I'm having trouble dragging IMAGE information. I want to allow the user to drag an image onto an 'imageWell' object. I'M STARTING THE DRAG INSIDE REVOLUTION, and the dragSource is an image object. The imageWell is another image object, and should accept the drag if there is image information in the dragged object (the dragData). Upon drop, the imageWell should display the image. My problem is that the documentation is a bit unclear as to WHAT exactly it is that I should be putting into the dragData[image]. The documentation merely states the the dragData[image] should contain 'an image in PNG format'. So, here is what I tried: a) Make new stack. Place a ',png' image in it (our 'source'), and place an 'empty' image object somewhere else in the card (our 'target' object) - which will be our 'imageWell'. b) In the source image, as per instructions in the language guide, I added the following script: on mouseDown set the dragData[image] to me end mouseDown c) In the target image, I added the following script: on dragEnter if dragData[image' is not empty then set the showBorder of me to true end dragEnter on dragLeave set the showBorder of me to false end dragLeave on dragDrop put dragData[image] into me end dragDrop This doesn't work. It appears that dragData[image] is empty, as there is no change in the appearance of the target image. So I tried changing mouseDown handler of the source image, so that what is stored is the 'imageData': on mouseDown set the dragData[image] to the imageData of me end mouseDown No change - except that it does something nasty to Revolution (changes cursors, slows it down) and I have to quite and re-launch... I cannot find any other hints in the documentation as to what it is that I should be doing. Could anyone shed some light? PROBLEM 2: In MacOS X, when a user drags an item, there is usually quite a bit of visual feedback given to the user. When a user is dragging something, there is usually a transparent image right underneath the cursor, giving the user some visual hint as to WHAT is being dragged. It seems to me that in RunRev, the only visual feedback we can give the user is by changing the cursor image... Is that correct? - or would there be a way to drag a custom 'transparent image', like in OS X, while dragging between windows and applications? Any suggestions or hints on either problem much appreciated. -- Igor de Oliveira Couto -- [EMAIL PROTECTED] -- ___ use-revolution mailing list [EMAIL PROTECTED] http://lists.runrev.com/mailman/listinfo/use-revolution
Re: Drag-And-Drop Image Fun
I have been able to successfully work with drag-and-drop with text, but not with PICTURES. My original posting, in regards to the 2 problems I encountered with drag-and-drop: Hi Igor I've asked on this list to jan Schenkel to write a nioce code for drag 'n drop for text, from one fld to another. I gave us a wonderful code, with a fantastic user interface. Perhaps he could do the same with image ? Hey Jan, are you ready ??? -- Greetings. Yves COPPE Email : [EMAIL PROTECTED] ___ use-revolution mailing list [EMAIL PROTECTED] http://lists.runrev.com/mailman/listinfo/use-revolution
Re: Drag-And-Drop Image Fun
--- Yves COPPE [EMAIL PROTECTED] wrote: I have been able to successfully work with drag-and-drop with text, but not with PICTURES. My original posting, in regards to the 2 problems I encountered with drag-and-drop: Hi Igor I've asked on this list to jan Schenkel to write a nioce code for drag 'n drop for text, from one fld to another. I gave us a wonderful code, with a fantastic user interface. Perhaps he could do the same with image ? Hey Jan, are you ready ??? -- Greetings. Yves COPPE Eep, why is everyone looking at me for examples ? *hides under his desk* Seriously now, apart from a simple test stack to check a few things, I haven't used the new drag'n'drop features all that much ; the stack for drag'n'drop between list fields doesn't use the standard messages ; and graphics/multimedia isn't really my field. However, here's my take on things (UNTESTED) : - since it wants .PNG formatted image data, you'll need to convert both its imageData _and_ its maskData/alphaData into that format - you might want to look at the 'export' command in the dictionary ; it allows you to export to a file or even a container in a certain format (aha!) - you can then stuff this in the dragData[image] and give it a whirl. As for visual interaction, that's a whole different ballpark. If you're only dragging between image controls on the same card, then here's another UNTESTED idea : - temporarily create a new image control of the same size as the source, - set its imageData to the imageData of the source and its alphaData too - tinker its blendLevel so its more translucent And either : - in the card script, trap the dragMove message and set the location of the temp image to something around the mouseLoc - or start a 'send in 5 milliseconds' cycle to accomplish the same movement of the temp image Hope this gets you closer to a solution. Jan Schenkel. = As we grow older, we grow both wiser and more foolish at the same time. (La Rochefoucauld) __ Do you Yahoo!? Yahoo! Calendar - Free online calendar with sync to Outlook(TM). http://calendar.yahoo.com ___ use-revolution mailing list [EMAIL PROTECTED] http://lists.runrev.com/mailman/listinfo/use-revolution
Re: Drag-And-Drop Image Fun
However, here's my take on things (UNTESTED) : - since it wants .PNG formatted image data, you'll need to convert both its imageData _and_ its maskData/alphaData into that format - you might want to look at the 'export' command in the dictionary ; it allows you to export to a file or even a container in a certain format (aha!) - you can then stuff this in the dragData[image] and give it a whirl. Just tested it and there seems to be a bug where dragging and dropping images within Rev does not work. Will fix for 2.1. This is how it was supposed to work: source image: on mousedown set the dragdata[image] to the text of me -- where me is an image end mousedown target image: on dragenter if image is among the items of the keys(the dragdata) then --if image is one of the available drag types set the acceptdrops to true end if end dragenter on dragdrop if image is among the items of the keys(the dragdata) then put the dragdata[image] into me end if pass dragdrop end dragdrop The workaround is: on mousedown set the dragdata[text] to base64encode(the text of me) --base64encode binary data as text end mousedown target image: on dragenter if text is among the items of the keys(the dragdata) then set the acceptdrops to true end if end dragenter on dragdrop if text is among the items of the keys(the dragdata) then put base64decode(the dragdata[image]) into me end if pass dragdrop end dragdrop Tuviah Snyder [EMAIL PROTECTED] http://www.runrev.com/ Runtime Revolution Limited - Software at the Speed of Thought ___ use-revolution mailing list [EMAIL PROTECTED] http://lists.runrev.com/mailman/listinfo/use-revolution
