/// <summary>
/// Handles when the mouse moves.
/// </summary>
/// <param name="e">The <see cref="System.Windows.Forms.MouseEventArgs"/> instance containing the event data.</param>
/// <param name="camera">The <see cref="ICamera2D"/> describing the current view.</param>
/// <returns>True if the <see cref="TransBoxManager"/> handled the event; otherwise false.</returns>
public bool HandleMouseMove(MouseEventArgs e, ICamera2D camera)
{
if (_transBoxes.Count == 0)
{
return(false);
}
var worldPos = camera.ToWorld(e.Position());
_lastWorldPos = worldPos;
// Update what transbox is under the cursor
if (SelectedTransBox != null)
{
UnderCursor = SelectedTransBox;
}
else
{
UnderCursor = FindBoxAt(worldPos);
}
// Update position
if (SelectedTransBox != null)
{
SelectedTransBox.CursorMoved(_lastWorldPos);
}
return(SelectedTransBox != null);
}
/// <summary>
/// Handles when a mouse button is pressed down.
/// </summary>
/// <param name="e">The <see cref="System.Windows.Forms.MouseEventArgs"/> instance containing the event data.</param>
/// <param name="camera">The <see cref="ICamera2D"/> describing the current view.</param>
/// <returns>True if the <see cref="TransBoxManager"/> handled the event; otherwise false.</returns>
public bool HandleMouseDown(MouseEventArgs e, ICamera2D camera)
{
if (e.Button == DragButton)
{
var worldPos = camera.ToWorld(e.Position());
UnderCursor = FindBoxAt(worldPos);
SelectedTransBox = UnderCursor;
_lastWorldPos = worldPos;
if (SelectedTransBox != null)
{
_selectedTransBoxButton = e.Button;
}
else
{
_selectedTransBoxButton = MouseButtons.None;
}
}
return(SelectedTransBox != null);
}
/// <summary>
/// Recreates the <see cref="ITransBox"/>es for the current selection.
/// </summary>
/// <param name="camera">The camera describing the view area.</param>
void UpdateTransBoxes(ICamera2D camera)
{
SelectedTransBox = null;
UnderCursor = null;
// Clear the old boxes
_transBoxes.Clear();
if (_items.Count <= 0)
{
// Nothing selected
return;
}
else if (_items.Count == 1)
{
// Only one selected
var item = _items.FirstOrDefault();
if (item == null)
{
Debug.Fail("How did this happen?");
Clear(camera);
return;
}
var transBoxes = TransBox.SurroundEntity(this, item, camera);
_transBoxes.AddRange(transBoxes);
}
else
{
// Multiple selected
var min = new Vector2(Items.Min(x => x.Position.X), Items.Min(x => x.Position.Y));
var max = new Vector2(Items.Max(x => x.Max.X), Items.Max(x => x.Max.Y));
var center = min + ((max - min) / 2f).Round();
var tb = new MoveManyTransBox(this, _items, center, camera);
_transBoxes.Add(tb);
}
}
/// <summary>
/// Recreates the <see cref="ITransBox"/>es for the current selection.
/// </summary>
/// <param name="camera">The camera describing the view area.</param>
void UpdateTransBoxes(ICamera2D camera)
{
SelectedTransBox = null;
UnderCursor = null;
// Clear the old boxes
_transBoxes.Clear();
if (_items.Count <= 0)
{
// Nothing selected
return;
}
else if (_items.Count == 1)
{
// Only one selected
var item = _items.FirstOrDefault();
if (item == null)
{
Debug.Fail("How did this happen?");
Clear(camera);
return;
}
var transBoxes = TransBox.SurroundEntity(this, item, camera);
_transBoxes.AddRange(transBoxes);
}
else
{
// Multiple selected
var min = new Vector2(Items.Min(x => x.Position.X), Items.Min(x => x.Position.Y));
var max = new Vector2(Items.Max(x => x.Max.X), Items.Max(x => x.Max.Y));
var center = min + ((max - min) / 2f).Round();
var tb = new MoveManyTransBox(this, _items, center, camera);
_transBoxes.Add(tb);
}
}
/// <summary>
/// Handles when the mouse moves.
/// </summary>
/// <param name="e">The <see cref="System.Windows.Forms.MouseEventArgs"/> instance containing the event data.</param>
/// <param name="camera">The <see cref="ICamera2D"/> describing the current view.</param>
/// <returns>True if the <see cref="TransBoxManager"/> handled the event; otherwise false.</returns>
public bool HandleMouseMove(MouseEventArgs e, ICamera2D camera)
{
if (_transBoxes.Count == 0)
return false;
var worldPos = camera.ToWorld(e.Position());
_lastWorldPos = worldPos;
// Update what transbox is under the cursor
if (SelectedTransBox != null)
UnderCursor = SelectedTransBox;
else
UnderCursor = FindBoxAt(worldPos);
// Update position
if (SelectedTransBox != null)
SelectedTransBox.CursorMoved(_lastWorldPos);
return SelectedTransBox != null;
}
/// <summary>
/// Handles when a mouse button is pressed down.
/// </summary>
/// <param name="e">The <see cref="System.Windows.Forms.MouseEventArgs"/> instance containing the event data.</param>
/// <param name="camera">The <see cref="ICamera2D"/> describing the current view.</param>
/// <returns>True if the <see cref="TransBoxManager"/> handled the event; otherwise false.</returns>
public bool HandleMouseDown(MouseEventArgs e, ICamera2D camera)
{
if (e.Button == DragButton)
{
var worldPos = camera.ToWorld(e.Position());
UnderCursor = FindBoxAt(worldPos);
SelectedTransBox = UnderCursor;
_lastWorldPos = worldPos;
if (SelectedTransBox != null)
_selectedTransBoxButton = e.Button;
else
_selectedTransBoxButton = MouseButtons.None;
}
return SelectedTransBox != null;
}