h1or4dme8/osu-lazer
1
0
Fork 0
mirror of https://github.com/ppy/osu.git synced 2024-11-06 06:57:39 +08:00
Code Issues Releases Wiki Activity

Add scrolling points so items can be dragged beyond the list.

Browse Source
This commit is contained in:
smoogipooo 2017-09-04 14:58:28 +09:00
parent 2ed20f5a6f
commit 04c3801fcc
1 changed files with 57 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

73
osu.Game/Overlays/Music/PlaylistList.cs
View File

@ -137,46 +137,87 @@ namespace osu.Game.Overlays.Music
{
if (draggedItem == null)
return base.OnDrag(state);
return true;
}
// Mouse position in the position space of the items container
Vector2 itemsPos = items.ToLocalSpace(state.Mouse.NativeState.Position);
protected override bool OnDragEnd(InputState state)
{
var handled = draggedItem != null || base.OnDragEnd(state);
draggedItem = null;
int src = (int)draggedItem.Depth;
return handled;
}
protected override void Update()
{
base.Update();
if (draggedItem == null)
return;
var mouseState = GetContainingInputManager().CurrentState.Mouse;
updateScrollPosition(mouseState);
updateDragPosition(mouseState);
}
private void updateScrollPosition(IMouseState mouseState)
{
const float start_offset = 10;
const double max_power = 50;
const double exp_base = 1.05;
var localPos = ToLocalSpace(mouseState.Position);
if (localPos.Y < start_offset)
{
var power = Math.Min(max_power, Math.Abs(start_offset - localPos.Y));
ScrollBy(-(float)Math.Pow(exp_base, power));
}
else if (localPos.Y > DrawHeight - start_offset)
{
var power = Math.Min(max_power, Math.Abs(DrawHeight - start_offset - localPos.Y));
ScrollBy((float)Math.Pow(exp_base, power));
}
}
private void updateDragPosition(IMouseState mouseState)
{
var itemsPos = items.ToLocalSpace(mouseState.Position);
int srcIndex = (int)draggedItem.Depth;
// Find the last item with position < mouse position. Note we can't directly use
// the item positions as they are being transformed
float heightAccumulator = 0;
int dst = 0;
for (; dst < items.Count; dst++)
int dstIndex = 0;
for (; dstIndex < items.Count; dstIndex++)
{
// Using BoundingBox here takes care of scale, paddings, etc...
heightAccumulator += items[dst].BoundingBox.Height;
heightAccumulator += items[dstIndex].BoundingBox.Height;
if (heightAccumulator > itemsPos.Y)
break;
}
dst = MathHelper.Clamp(dst, 0, items.Count - 1);
dstIndex = MathHelper.Clamp(dstIndex, 0, items.Count - 1);
if (src == dst)
return true;
if (srcIndex == dstIndex)
return;
if (src < dst)
if (srcIndex < dstIndex)
{
for (int i = src + 1; i <= dst; i++)
for (int i = srcIndex + 1; i <= dstIndex; i++)
items.ChangeChildDepth(items[i], i - 1);
}
else
{
for (int i = dst; i < src; i++)
for (int i = dstIndex; i < srcIndex; i++)
items.ChangeChildDepth(items[i], i + 1);
}
items.ChangeChildDepth(draggedItem, dst);
return true;
items.ChangeChildDepth(draggedItem, dstIndex);
}
protected override bool OnDragEnd(InputState state) => draggedItem != null || base.OnDragEnd(state);
private class ItemSearchContainer : FillFlowContainer<PlaylistItem>, IHasFilterableChildren
{