private void OnPreviewMouseDown(object sender, MouseEventArgs mouseEventArgs)
{
if (mouseEventArgs.Button == MouseButtons.Left)
{
switch (m_previewMode)
{
case PreviewMode.Preview:
m_previewMouseDown = true;
m_previewGrip.X = mouseEventArgs.X;
m_previewGrip.Y = mouseEventArgs.Y;
break;
case PreviewMode.PickFirst:
{
Location pixelLocation = new Location(mouseEventArgs.X, mouseEventArgs.Y);
pixelLocation.X /= m_trackBarZoom.Value;
pixelLocation.Y /= m_trackBarZoom.Value;
pixelLocation.X -= (int)m_previewOffset.X;
pixelLocation.Y -= (int)m_previewOffset.Y;
m_swapTileIndex1 = m_tileSheet.GetTileIndex(pixelLocation);
m_previewMode = PreviewMode.PickSecond;
m_panelImage.Invalidate();
}
break;
case PreviewMode.PickSecond:
{
Cursor oldCursor = this.Cursor;
this.Cursor = Cursors.WaitCursor;
Location pixelLocation = new Location(mouseEventArgs.X, mouseEventArgs.Y);
pixelLocation.X /= m_trackBarZoom.Value;
pixelLocation.Y /= m_trackBarZoom.Value;
pixelLocation.X -= (int)m_previewOffset.X;
pixelLocation.Y -= (int)m_previewOffset.Y;
m_swapTileIndex2 = m_tileSheet.GetTileIndex(pixelLocation);
if (m_swapTileIndex1 != m_swapTileIndex2)
{
Command command = new TileSheetSwapTilesCommand(m_tileSheet, m_swapTileIndex1, m_swapTileIndex2);
CommandHistory.Instance.Do(command);
m_bitmapImageSource = LoadUnlockedBitmap(m_tileSheet.ImageSource);
}
this.Cursor = oldCursor;
m_previewMode = PreviewMode.PickFirst;
m_panelImage.Invalidate();
}
break;
}
}
}
