/// <summary>
/// On mouse down
/// </summary>
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
Focus();
if (Canvas == null || _pixels.Count <= 0)
{
return;
}
Point origin = GetOrigin();
Rectangle rect = new Rectangle(origin.X * ImageScale + AutoScrollPosition.X, origin.Y * ImageScale + AutoScrollPosition.Y, Canvas.Width * ImageScale, Canvas.Height * ImageScale);
if (rect.Contains(e.Location) == false)
{
return;
}
int x = (e.Location.X - rect.X) / ImageScale / SnapSize.Width * SnapSize.Width;
int y = (e.Location.Y - rect.Y) / ImageScale / SnapSize.Height * SnapSize.Height;
Rectangle selection = new Rectangle(new Point(x, y), SnapSize);
int cols = Canvas.Width / SnapSize.Width;
int col = selection.X / SnapSize.Width;
int row = selection.Y / SnapSize.Height;
int tileID = (row * cols) + col;
int count = _pixels.Count / (SnapSize.Width * SnapSize.Height);
if (tileID >= count)
{
return;
}
_selection = selection;
if (e.Button == MouseButtons.Right)
{
_source = tileID;
TileSelectionChanged?.Invoke();
return;
}
if (_source == -1)
{
_source = tileID;
TileSelectionChanged?.Invoke();
}
else
{
_target = tileID;
SwapTiles();
}
UpdateBackBuffer();
}
/// <summary>
/// Mouse down override
/// </summary>
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
Focus();
if (Image == null || !AllowSelection)
{
return;
}
if (e.Button != MouseButtons.Left)
{
return;
}
Point snap = GetSnappedPoint(e.Location);
if (new Rectangle(0, 0, Image.Width, Image.Height).Contains(snap) == false)
{
return;
}
int cols = Image.Width / SnapSize.Width;
int col = snap.X / SnapSize.Width;
int row = snap.Y / SnapSize.Height;
int tileID = (row * cols) + col;
if (tileID >= TileCount)
{
return;
}
_selection = new Rectangle(snap, SnapSize);
_tileID = tileID;
TileSelectionChanged?.Invoke();
}