private void HandleSelectedSceneDragging()
{
switch (Event.current.type)
{
#region Handles clicking on the edge to be draggable
case EventType.mouseUp:
if (Event.current.button == 0)
{
_dragging = DraggingEdge.None;
Repaint();
}
break;
case EventType.mouseDown:
var mousePos = mousePositionInWorld;
var dataRect = _asset[_selectedSceneIndex].rectangle;
if (Mathf.Abs(mousePos.x - dataRect.x) < _cClickableEdgeDistance)
_dragging = DraggingEdge.Left;
else
{
if (Mathf.Abs(mousePos.x - (dataRect.x + dataRect.width)) < _cClickableEdgeDistance)
_dragging = DraggingEdge.Right;
else
{
if (Mathf.Abs(mousePos.y - dataRect.y) < _cClickableEdgeDistance)
_dragging = DraggingEdge.Top;
else
{
if (Mathf.Abs(mousePos.y - (dataRect.y - dataRect.height)) < _cClickableEdgeDistance)
_dragging = DraggingEdge.Bottom;
else
_dragging = DraggingEdge.None;
}
}
}
break;
#endregion
#region Draw the edge being dragged (if any)
case EventType.repaint:
if (_dragging == DraggingEdge.None)
return;
Rect rect = GetRectWithScreenOffset(_asset[_selectedSceneIndex]);
switch (_dragging)
{
case DraggingEdge.Left:
_vertexCache[0] = new Vector3(rect.x + 1, rect.y + 1);
_vertexCache[1] = new Vector3(rect.x + _cClickableEdgeDistance - 1, rect.y + 1);
_vertexCache[2] = new Vector3(rect.x + _cClickableEdgeDistance - 1, rect.yMax - 1);
_vertexCache[3] = new Vector3(rect.x + 1, rect.yMax - 1);
break;
case DraggingEdge.Top:
_vertexCache[0] = new Vector3(rect.x + 1, rect.y + 1);
_vertexCache[1] = new Vector3(rect.x + rect.width, rect.y + 1);
_vertexCache[2] = new Vector3(rect.x + rect.width, rect.y + _cClickableEdgeDistance - 1);
_vertexCache[3] = new Vector3(rect.x + 1, rect.y + _cClickableEdgeDistance - 1);
break;
case DraggingEdge.Right:
_vertexCache[0] = new Vector3(rect.x + rect.width - _cClickableEdgeDistance + 1, rect.y + 1);
_vertexCache[1] = new Vector3(rect.x + rect.width, rect.y + 1);
_vertexCache[2] = new Vector3(rect.x + rect.width, rect.yMax - 1);
_vertexCache[3] = new Vector3(rect.x + rect.width - _cClickableEdgeDistance + 1, rect.yMax - 1);
break;
case DraggingEdge.Bottom:
_vertexCache[0] = new Vector3(rect.x + 1, rect.yMax - _cClickableEdgeDistance + 1);
_vertexCache[1] = new Vector3(rect.xMax, rect.yMax - _cClickableEdgeDistance + 1);
_vertexCache[2] = new Vector3(rect.xMax, rect.yMax - 1);
_vertexCache[3] = new Vector3(rect.x + 1, rect.yMax - 1);
break;
}
Handles.DrawSolidRectangleWithOutline(_vertexCache, Color.cyan * .7f, Color.clear);
break;
#endregion
}
HandleDragSnappingScene();
HandleResizeDraggingScene();
}
/// <summary>
/// Handles various event types concerning the cells in the window
/// containing the map preview and layout.
/// </summary>
private void HandleMap()
{
int i;
Rect rectWithOffset = new Rect();
// I chose the method of a switch with loops in each to avoid
// unnecessary Begin/EndGUI() calls
switch (Event.current.type)
{
case EventType.MouseMove:
_hoverSceneIndex = -1;
for (i = 0; i < _asset.Count; i++)
{
rectWithOffset = GetRectWithScreenOffset(_asset[i].rectangle);
if (rectWithOffset.Contains(Event.current.mousePosition))
{
_hoverSceneIndex = i;
Repaint();
break;
}
}
break;
case EventType.mouseDown:
// The left button has been clicked so deselect the current scene if it exists
if (Event.current.button == 0)
_selectedSceneIndex = -1;
else break;
for (i = 0; i < _asset.Count; i++)
{
rectWithOffset = GetRectWithScreenOffset(_asset[i].rectangle);
if (rectWithOffset.Contains(Event.current.mousePosition))
{
if (Event.current.type == EventType.MouseDown && Event.current.button == 0)
{
_selectedSceneIndex = i;
_dragging = DraggingEdge.None;
Selection.activeObject = _asset;
if (Event.current.clickCount == 2)
{
if (_projectSceneCollection.SceneExists(_asset[i].name) &&
EditorUtility.DisplayDialog("Open Scene",
"Are you sure you want to open the scene?", "Yes", "No"))
{
EditorApplication.OpenScene(_projectSceneCollection.GetRelativeScenePath(_asset[i].name));
}
}
else
{
Repaint();
}
}
}
}
break;
case EventType.repaint:
if (_hoverSceneIndex >= _asset.Count)
_hoverSceneIndex = -1;
Handles.BeginGUI();
for (i = 0; i < _asset.Count; i++)
{
if (i == _selectedSceneIndex ||
i == _hoverSceneIndex)
continue;
DrawScene(_asset[i], Color.white);
}
if (_hoverSceneIndex >= 0)
DrawScene(_asset[_hoverSceneIndex], Color.yellow);
if (_selectedSceneIndex >= 0)
DrawScene(_asset[_selectedSceneIndex], Color.red);
Handles.EndGUI();
break;
}
}