private void TileGridControl_MouseDown(object sender, MouseEventArgs e)
{
//this.Focus();
if (!this.ctrlPressed)
{
foreach (TileGridItem selItem in this.selectedItems.Values)
{
selItem.IsSelected = false;
}
selectedItems.Clear();
}
double scaledValue = GetScaledScrollBarValue();
Point worldCoordinates = new Point(e.Location.X - rowHeaderWidth, e.Location.Y + (int)(scaledValue * (double)this.vScrollFactor) - (colHeaderHeight + colHeaderSpacer));
if (worldCoordinates.X < 0 || worldCoordinates.Y < 0)
{
return;
}
Point tileCoordinates = new Point(worldCoordinates.X / tileSize, worldCoordinates.Y / tileSize);
TileGridItem clickedItem = this.GetItemAtTilePos(tileCoordinates);
if (clickedItem != null)
{
clickedItem.IsSelected = !clickedItem.IsSelected;
if (clickedItem.IsSelected)
{
this.selectedItems.Add(clickedItem.Row, clickedItem);
}
else
{
this.selectedItems.Remove(clickedItem.Row);
}
}
}
private void ReDrawItem(TileGridItem item)
{
if (itemImage == null)
{
return;
}
using (Graphics graphics = Graphics.FromImage(itemImage))
{
DrawItem(graphics, item, new Point(0, 0));
}
}
private void DrawItem(Graphics graphics, TileGridItem item, Point offset)
{
Rectangle tile = new Rectangle(item.Col * tileSize + offset.X, item.Row * tileSize + offset.Y, item.ColSpan * tileSize, item.RowSpan * tileSize);
Color tileColor = item.IsSelected ? item.SelectedColor : item.BackColor;
SolidBrush tileBrush = new SolidBrush(tileColor);
graphics.FillRectangle(tileBrush, tile);
tileBrush.Color = item.ForeColor;
graphics.DrawLine(new Pen(tileBrush), new Point(tile.Left, tile.Bottom - 1), new Point(tile.Right - 1, tile.Bottom - 1));
graphics.DrawString(item.Text, this.Font, tileBrush, new PointF(10f + tile.X, 10f + tile.Y));
}