Drag and drop to reorder HTML lists
Try this: HTML5 Sortable. It is a jQuery plugin to create sortable lists and grids using native HTML5 drag and drop API.
user-interface
How to scroll to a specific element in ScrollRect with Unity UI?
I am going to give you a code snippet of mine because I feel like being helpful. Hope this helps! protected ScrollRect scrollRect; protected RectTransform contentPanel; public void SnapTo(RectTransform target) { Canvas.ForceUpdateCanvases(); contentPanel.anchoredPosition = (Vector2)scrollRect.transform.InverseTransformPoint(contentPanel.position) – (Vector2)scrollRect.transform.InverseTransformPoint(target.position); }
Formatting MM/DD/YYYY dates in textbox in VBA
I never suggest using Textboxes or Inputboxes to accept dates. So many things can go wrong. I cannot even suggest using the Calendar Control or the Date Picker as for that you need to register the mscal.ocx or mscomct2.ocx and that is very painful as they are not freely distributable files. Here is what I … Read more
Why are Tk GUI’s considered ugly? [closed]
I think part of the reason is that Tk is surprisingly powerful and easy to use but it doesn’t do much hand-holding. Since it is so easy, people with little experience in UI design can get something to work in very short order. But, without a lot of experience they rely on defaults and shortest-path-to-a-solution … Read more
In GTK/Linux, what’s the correct way to get the DPI scale factor?
I haven’t seen a dpi getter in GTK, but with some lines of code from open sources and some changes, I usually ask the X-server with this code-snippet to get the dpi values for the x and y direction. For the displayname you can pass the value(s) you want via argv[]. If you name it … Read more
Vertically centering a view in Android
I track the answer on Google groups, here it is © Romain Guy: Well, first of all RelativeLayout ignores layout_gravity. Then you need to know that gravity means “apply gravity to the content of this view” whereas layout_gravity means “apply gravity to this view within its parent.” So on a TextView, gravity will align the … Read more
How to set the min and max height or width of a Frame?
There is no single magic function to force a frame to a minimum or fixed size. However, you can certainly force the size of a frame by giving the frame a width and height. You then have to do potentially two more things: when you put this window in a container you need to make … Read more
Get HWND on windows with Qt5 (from WId)
In Qt5 winEvent was replaced by nativeEvent: bool winEvent(MSG* pMsg, long* result) is now bool nativeEvent(const QByteArray & eventType, void * message, long *result) And in EcWin7::winEvent you have to cast void to MSG: bool EcWin7::winEvent(void * message, long * result) { MSG* msg = reinterpret_cast<MSG*>(message); if (msg->message == mTaskbarMessageId) { … I was able … Read more
Is it safe to construct Swing/AWT widgets NOT on the Event Dispatch Thread?
Sun has changed the rules in 2004 — before, you were allowed to create the components outside the EDT and only had to move into the EDT once the component had been realized. The new rule now reads: To avoid the possibility of deadlock, you must take extreme care that Swing components and models are … Read more
Given a background color, how to get a foreground color that makes it readable on that background color?
Here’s one I did in both Java and Javascript. It’s loosely based off this one in javascript. I took the Luminance formula from here. The sweet-spot of the threshold from my eye was about 140. Java version: public class Color { private float CalculateLuminance(ArrayList<Integer> rgb){ return (float) (0.2126*rgb.get(0) + 0.7152*rgb.get(1) + 0.0722*rgb.get(2)); } private ArrayList<Integer> … Read more