Scrollview convenience function

[devomage]

i couldnt find an *easy* way to retrieve the top/bottom local position of a scrollview.

any chance there is something hidden that returns these values?

hack of the SetDragAmount method:

1. public Vector3 GetScrollviewPosition(int x, int y)
2. {
3.         // (0, 0) is the top-left corner, (1, 1) is the bottom-right.
4.         //float x = 0;
5.         //float y = 1;
6.  
7.         UIPanel mPanel = scrollview.panel;
8.  
9.         //DisableSpring();
10.  
11.         Bounds b = scrollview.bounds;
12.         if (b.min.x == b.max.x || b.min.y == b.max.y) return Vector3.zero;
13.  
14.         Vector4 clip = mPanel.finalClipRegion;
15.  
16.         float hx = clip.z * 0.5f;
17.         float hy = clip.w * 0.5f;
18.         float left = b.min.x + hx;
19.         float right = b.max.x - hx;
20.         float bottom = b.min.y + hy;
21.         float top = b.max.y - hy;
22.  
23.         if (mPanel.clipping == UIDrawCall.Clipping.SoftClip)
24.         {
25.                 left -= mPanel.clipSoftness.x;
26.                 right += mPanel.clipSoftness.x;
27.                 bottom -= mPanel.clipSoftness.y;
28.                 top += mPanel.clipSoftness.y;
29.         }
30.  
31.         // Calculate the offset based on the scroll value
32.         float ox = Mathf.Lerp(left, right, x);
33.         float oy = Mathf.Lerp(top, bottom, y);
34.  
35.         // Update the position
36.         //if (!updateScrollbars)
37.         //{
38.         Vector3 pos = scrollview.transform.localPosition;
39.         //if (canMoveHorizontally) pos.x += clip.x - ox;
40.         pos.y += clip.y - oy;//if (canMoveVertically)
41.         return pos;
42.         //}
43. }
44.  

edit:  is there a way to detect scrollbar "dragstart".  there isnt a tandem event to onDragFinished...  id prefer not to use uicamera for this.

[ArenMook]

Scroll view uses a panel, panel derives from a rect that has bounds like any widget. UIRect.localCorners tells you the local coordinates.

OnDragStart/OnDragEnd events are sent to whatever you are dragging.