/// <summary>
/// Show the tool tip UI.
/// </summary>
/// <param name="info">The tool tip to show.</param>
/// <param name="pointerPos">Where to position the UI in UI space (apply offset before calling).</param>
private void ShowToolTip(ToolTipInfo info, Vector2 pointerPos)
{
bool positionToolTip = false;
if (_currentToolTip != info || _hover)
{
// Changing or new tool tip.
positionToolTip = true;
}
else
{
// Validate positioning: is the cursor over the tooltip?
RectTransform ttui = ToolTipUI;
if (ttui != null)
{
Rect rect = GetGlobalRect(ttui);
positionToolTip = rect.Contains(pointerPos);
}
}
if (positionToolTip)
{
Text ttx = ToolTipUIText;
if (ttx != null)
{
_currentToolTip = info;
ttx.text = info.ToolTip;
RectTransform ttui = ToolTipUI;
if (ttui != null)
{
ResizeToolTip(ttui, ttx, info);
PositionToolTip(ttui, info, pointerPos);
ttui.gameObject.SetActive(true);
}
}
}
_hover = false;
}
protected int PopulateScrollRect(ScrollRect scroll, GameObject template, IEnumerable <FileSystemEntry> items,
FileIconSet icons, int targetWidth, bool startHorizontal)
{
if (scroll == null)
{
return(0);
}
ClearScrollRect(scroll);
if (template == null)
{
return(0);
}
// We modify the template width because it's the the simplest way to implement this feature.
if (targetWidth > 0)
{
// Resize the icon.
RectTransform rect = template.transform as RectTransform;
if (rect != null)
{
var sd = rect.sizeDelta;
sd.x = targetWidth;
rect.sizeDelta = sd;
}
}
GridLayoutGroup layoutGrid = scroll.content.GetComponent <GridLayoutGroup>();
if (layoutGrid != null)
{
layoutGrid.startAxis = (startHorizontal) ? GridLayoutGroup.Axis.Horizontal : GridLayoutGroup.Axis.Vertical;
}
// Create and position each item.
int itemCount = 0;
// Dodgy way to simulate many items for testing.
foreach (FileSystemEntry item in items)
{
// Create item
GameObject itemUI = GameObject.Instantiate(template);
Text itemText = itemUI.GetComponentInChildren <Text>();
FileEntryComponent entry = itemUI.GetComponent <FileEntryComponent>();
Sprite sprite = (icons != null) ? icons.GetIcon(item) : null;
ToolTipInfo toolTip = itemUI.GetComponentInChildren <ToolTipInfo>();
// We are only allowed to modify an empty tool tip.
if (toolTip != null && toolTip.ToolTip.Length > 0)
{
toolTip = null;
}
// Ensure tag
if (entry == null)
{
entry = itemUI.AddComponent <FileEntryComponent>();
}
entry.Entry = item;
// We expect the item to have two images; an icon image and an disabled highlight.
// We can expect that the highlight is disabled, to hide it for now, and must come
// first because of Unity uGUI draw order/hierarchy constraints.
// For simplicity, we assume the first image is the highlight, the second image is
// the icon. The icon image is optional.
foreach (Image image in itemUI.GetComponentsInChildren <Image>())
{
if (entry.Highlight == null)
{
entry.Highlight = image;
}
else if (entry.Icon == null)
{
// All done if we are here.
entry.Icon = image;
break;
}
}
// Set text.
if (itemText != null)
{
itemText.text = item.Name;
if (toolTip != null)
{
toolTip.ToolTip = item.Name;
}
}
if (entry.Highlight)
{
entry.Highlight.enabled = false;
}
// Set image
if (entry.Icon != null && sprite != null)
{
entry.Icon.sprite = sprite;
}
itemUI.transform.SetParent(scroll.content, false);
++itemCount;
}
return(itemCount);
}
