Bug fix in stamp creation from image selection (was crashing the program).Fix: was crashing when saving a JPEG file previously opened for a JPEG, if the opriginal JPEG had some mal-formatted EXIF data.Fix: pasting to the left, right, top or bottom of current selection did not work correctly.Fix: incorrect paste of 24 bit images (was pasted with transparent white color).Updated Firefox add-on to work with the latest release of Firefox.Correction - copying an image of irregular shape or with transparent areas would turn into solid background color on the target image.to convert all but red pixels on an image to white (or whatever you want) New option under Image - Color Substitution, to replace pixel color if the original color does not match the source color.Fix: Color substitution was not remembering transparency (alpha) and not applying it when doing auto-replacement on each capture.Fix: transparent background color setting on the Edit ribbon tab was not remembered when switching between images, if the drawing toolbar was not visible at the same time (which is the default setting).The idea behind this is that browsers that support FileReader support DataTransfer too: 'FileReader' in windowĬombining the code above into self-invoking anonymous function… var isAdvancedUpload = function() ', files.length ) : files.name) ĭroppedFiles = e.originalEvent.dataTransfer. The trick here is to check the availability of FileReader API right when the document loads. “Oops just kidding drag and drop isn’t supported.”. This one is a bit tricky because there is no bullet-proof way to detect the availability of the object before user’s first interaction with the drag & drop interface. Next we need to check the FormData interface, which is for forming a programmatic object of the selected file(s) so they can be sent to the server via Ajax: return 'FormData' in window Return ('draggable' in div) || ('ondragstart' in div & 'ondrop' in div) This test is from there: var div = document.createElement('div') Modernizr is a library you can trust all about feature detection. Drag & drop file upload relies on a number of different JavaScript API’s, so we’ll need to check on all of them.įirst, drag & drop events themselves. We can’t 100% rely on browsers supporting drag and drop. box_dragndrop will be shown if a browser supports drag and drop file upload functionality. The input and label also serve as an alternative for selecting files in the standard way (or the only way if drag and drop isn’t supported). In that post I also described the purpose of attribute. I wrote about styling these together in my post about customizing file inputs. input and label are the functional parts of the form.box_error will be shown depending on what happens. box_uploading element will be visible during the Ajax process of file upload (and the others will still be hidden). We’ll hide those states until we need them. It’s just a normal, functional, albeit with some extra HTML elements for potential states. This markup doesn’t have anything specifically to do with drag and drop.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |