51 lines
1.2 KiB
C#
51 lines
1.2 KiB
C#
using System.Drawing;
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using System.Windows.Forms;
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namespace LibationWinForms
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{
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public abstract class DataGridViewImageButtonColumn : DataGridViewButtonColumn
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{
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private DataGridViewImageButtonCell _cellTemplate;
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public override DataGridViewCell CellTemplate
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{
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get => GetCellTemplate();
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set
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{
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if (value is DataGridViewImageButtonCell cellTemplate)
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_cellTemplate = cellTemplate;
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}
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}
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protected abstract DataGridViewImageButtonCell NewCell();
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private DataGridViewImageButtonCell GetCellTemplate()
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{
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if (_cellTemplate is null)
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return NewCell();
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else
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return _cellTemplate;
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}
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public override object Clone()
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{
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var clone = (DataGridViewImageButtonColumn)base.Clone();
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clone._cellTemplate = _cellTemplate;
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return clone;
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}
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}
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public class DataGridViewImageButtonCell : DataGridViewButtonCell
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{
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protected void DrawButtonImage(Graphics graphics, Image image, Rectangle cellBounds)
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{
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var w = image.Width;
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var h = image.Height;
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var x = cellBounds.Left + (cellBounds.Width - w) / 2;
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var y = cellBounds.Top + (cellBounds.Height - h) / 2;
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graphics.DrawImage(image, new Rectangle(x, y, w, h));
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}
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}
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}
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