internal void OnMoveStart(Vector2 location)
{
// Start moving selected keyframes
_isMovingSelection = true;
_movedKeyframes = false;
var viewRect = _editor._mainPanel.GetClientArea();
_movingSelectionStart = PointToKeyframes(location, ref viewRect);
if (_movingSelectionOffsets == null || _movingSelectionOffsets.Length != _editor._points.Count)
{
_movingSelectionOffsets = new Vector2[_editor._points.Count];
}
for (int i = 0; i < _movingSelectionOffsets.Length; i++)
{
_movingSelectionOffsets[i] = _editor._points[i].Point - _movingSelectionStart;
}
_editor.OnEditingStart();
}
/// <inheritdoc />
public override bool OnMouseDown(Vector2 location, MouseButton button)
{
if (base.OnMouseDown(location, button))
{
// Clear flags
_isMovingSelection = false;
_isMovingTangent = false;
_rightMouseDown = false;
_leftMouseDown = false;
return(true);
}
// Cache data
_isMovingSelection = false;
_isMovingTangent = false;
_mousePos = location;
if (button == MouseButton.Left)
{
_leftMouseDown = true;
_leftMouseDownPos = location;
}
if (button == MouseButton.Right)
{
_rightMouseDown = true;
_rightMouseDownPos = location;
_movingViewLastPos = location;
}
// Check if any node is under the mouse
var underMouse = GetChildAt(location);
if (underMouse is KeyframePoint keyframe)
{
if (_leftMouseDown)
{
// Check if user is pressing control
if (Root.GetKey(KeyboardKeys.Control))
{
// Add to selection
keyframe.IsSelected = true;
_editor.UpdateTangents();
}
// Check if node isn't selected
else if (!keyframe.IsSelected)
{
// Select node
_editor.ClearSelection();
keyframe.IsSelected = true;
_editor.UpdateTangents();
}
// Start moving selected nodes
StartMouseCapture();
_isMovingSelection = true;
_movedKeyframes = false;
var viewRect = _editor._mainPanel.GetClientArea();
_movingSelectionStart = PointToKeyframes(location, ref viewRect);
if (_movingSelectionOffsets == null || _movingSelectionOffsets.Length != _editor._points.Count)
{
_movingSelectionOffsets = new Vector2[_editor._points.Count];
}
for (int i = 0; i < _movingSelectionOffsets.Length; i++)
{
_movingSelectionOffsets[i] = _editor._points[i].Point - _movingSelectionStart;
}
_editor.OnEditingStart();
Focus();
Tooltip?.Hide();
return(true);
}
}
else if (underMouse is TangentPoint tangent && tangent.Visible)
{
if (_leftMouseDown)
{
// Start moving tangent
StartMouseCapture();
_isMovingTangent = true;
_movedKeyframes = false;
_movingTangent = tangent;
_editor.OnEditingStart();
Focus();
Tooltip?.Hide();
return(true);
}
}