/// <summary>
///
/// </summary>
/// <param name="G"></param>
/// <param name="Item"></param>
/// <param name="Selected"></param>
private void DrawImage(Graphics G, ListViewItem Item, bool Selected)
{
ImageList imageList = Item.ImageList;
Size imageSize = imageList.ImageSize;
Rectangle imageRect = Item.GetBounds(ItemBoundsPortion.Icon);
if (imageRect.Width > imageSize.Width)
{
imageRect.X += (imageRect.Width - imageSize.Width) / 2;
imageRect.Width = imageSize.Width;
}
if (imageRect.Height > imageSize.Height)
{
imageRect.Y += (imageRect.Height - imageSize.Height) / 2;
imageRect.Height = imageSize.Height;
}
int imageIndex =
Item.ImageIndex != -1 ?
Item.ImageIndex :
imageList.Images.IndexOfKey(Item.ImageKey);
if (Selected)
{
IntPtr hIcon = ListViewNativeMethods.ImageList_GetIcon(
imageList.Handle,
imageIndex,
(int)ListViewNativeMethods.ImageListDrawFlags.ILD_SELECTED);
G.DrawIcon(Icon.FromHandle(hIcon), imageRect);
ListViewNativeMethods.DestroyIcon(hIcon);
}
else
{
Image image = imageList.Images[imageIndex];
G.DrawImage(
image,
imageRect,
0,
0,
image.Width,
image.Height,
GraphicsUnit.Pixel);
}
}
/// <summary>
///
/// </summary>
/// <param name="Column"></param>
/// <returns></returns>
private int ColumnAtIndex(int Column)
{
ListViewNativeMethods.HDITEM hd = new ListViewNativeMethods.HDITEM();
hd.mask = HDI_ORDER;
for (int i = 0; i < ColumnCount; i++)
{
if (ListViewNativeMethods.SendMessage(HeaderWnd, HDM_GETITEMA, Column, ref hd) != IntPtr.Zero)
{
return(hd.iOrder);
}
}
return(0);
}
/// <summary>
///
/// </summary>
/// <param name="Msg"></param>
private void WmNcPaint(ref Message Msg)
{
base.WndProc(ref Msg);
if (base.BorderStyle == BorderStyle.None)
{
return;
}
IntPtr hDC = ListViewNativeMethods.GetWindowDC(Msg.HWnd);
if (hDC == IntPtr.Zero)
{
throw new Win32Exception();
}
try
{
Color backColor = BackColor;
Color borderColor = this._BorderColor;
Rectangle bounds = new Rectangle(0, 0, Width, Height);
using (Graphics g = Graphics.FromHdc(hDC))
{
using (Region region = new Region(bounds))
{
region.Exclude(AbsoluteClientRectangle);
using (Brush brush = new SolidBrush(backColor))
{
g.FillRegion(brush, region);
}
}
ControlPaint.DrawBorder(
g,
bounds,
borderColor,
ButtonBorderStyle.Solid);
}
}
finally
{
ListViewNativeMethods.ReleaseDC(Msg.HWnd, hDC);
}
Msg.Result = IntPtr.Zero;
}
/// <summary>
///
/// </summary>
/// <returns></returns>
private Rectangle HeaderEndRect()
{
ListViewNativeMethods.RECT rect = new ListViewNativeMethods.RECT();
IntPtr headerWnd = HeaderWnd;
ListViewNativeMethods.SendMessage(headerWnd, HDM_GETITEMRECT, ColumnAtIndex(ColumnCount - 1), ref rect);
int left = rect.Right;
ListViewNativeMethods.GetWindowRect(headerWnd, ref rect);
ListViewNativeMethods.OffsetRect(ref rect, -rect.Left, -rect.Top);
rect.Left = left;
return(Rectangle.FromLTRB(rect.Left, rect.Top, rect.Right, rect.Bottom));
}
/// <summary>
///
/// </summary>
/// <param name="Msg"></param>
protected override void WndProc(ref Message Msg)
{
base.WndProc(ref Msg);
if (Msg.Msg == 0xF || Msg.Msg == 0x47)
{
IntPtr hdc = ListViewNativeMethods.GetDC(Msg.HWnd);
try
{
using (Graphics g = Graphics.FromHdc(hdc))
{
Rectangle bounds = this._Owner.HeaderEndRect();
Color baseColor = this._Owner.HeadColor;
Color borderColor = this._Owner.HeadColor;
Color innerBorderColor = Color.FromArgb(150, 255, 255, 255);
if (this._Owner.ColumnCount > 0)
{
bounds.X--;
bounds.Width++;
}
this._Owner.RenderBackgroundInternal(
g,
bounds,
baseColor,
borderColor,
innerBorderColor,
0.45f,
true,
LinearGradientMode.Vertical);
}
}
finally
{
ListViewNativeMethods.ReleaseDC(Msg.HWnd, hdc);
}
}
}
/// <summary>
///
/// </summary>
/// <param name="e"></param>
private void DrawSubItemDetails(DrawListViewSubItemEventArgs e)
{
Rectangle bounds = e.Bounds;
ListViewItemStates itemState = e.ItemState;
Graphics g = e.Graphics;
ListViewItem item = e.Item;
bool bSelected =
(itemState & ListViewItemStates.Selected) != 0;
bool bDrawImage = false;
bool bFistItem = false;
int imageIndex = -1;
if (e.ColumnIndex == 0)
{
bFistItem = true;
if (item.ImageList != null)
{
if (item.ImageIndex != -1)
{
imageIndex = item.ImageIndex;
}
else if (!string.IsNullOrEmpty(item.ImageKey))
{
imageIndex =
item.ImageList.Images.IndexOfKey(item.ImageKey);
}
if (imageIndex != -1)
{
bDrawImage = true;
}
}
}
Rectangle backRect = bounds;
Rectangle imageRect = Rectangle.Empty;
if (bDrawImage)
{
imageRect = item.GetBounds(ItemBoundsPortion.Icon);
backRect = item.GetBounds(ItemBoundsPortion.Label);
backRect.X += 2;
backRect.Width -= 2;
}
if (bSelected &&
(base.FullRowSelect ||
(!base.FullRowSelect && bFistItem)))
{
backRect.Height--;
Color baseColor = this._SelectedColor;
Color borderColor = this._SelectedColor;
Color innerBorderColor = Color.FromArgb(150, 255, 255, 255);
RenderBackgroundInternal(
g,
backRect,
baseColor,
borderColor,
innerBorderColor,
0.45f,
false,
LinearGradientMode.Vertical);
if (!base.FullRowSelect && bFistItem)
{
backRect.Width--;
using (Pen pen = new Pen(borderColor))
{
g.DrawRectangle(pen, backRect);
}
backRect.Width++;
}
else
{
Point[] points = new Point[4];
points[0] = new Point(backRect.X, backRect.Y);
points[1] = new Point(backRect.Right, backRect.Y);
points[2] = new Point(backRect.Right, backRect.Bottom);
points[3] = new Point(backRect.X, backRect.Bottom);
using (Pen pen = new Pen(borderColor))
{
if (bFistItem)
{
g.DrawLine(pen, points[0], points[1]);
g.DrawLine(pen, points[0], points[3]);
g.DrawLine(pen, points[2], points[3]);
}
if (e.ColumnIndex == ColumnCount - 1)
{
points[1].X--;
points[2].X--;
g.DrawLine(pen, points[0], points[1]);
g.DrawLine(pen, points[1], points[2]);
g.DrawLine(pen, points[2], points[3]);
}
else
{
g.DrawLine(pen, points[0], points[1]);
g.DrawLine(pen, points[2], points[3]);
}
}
}
}
else
{
Color backColor = e.ItemIndex % 2 == 0 ?
this._RowBackColor1 : this._RowBackColor2;
using (SolidBrush brush = new SolidBrush(backColor))
{
g.FillRectangle(brush, backRect);
}
}
TextFormatFlags flags = GetFormatFlags(e.Header.TextAlign);
if (bDrawImage)
{
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
if (bSelected)
{
IntPtr hIcon = ListViewNativeMethods.ImageList_GetIcon(
item.ImageList.Handle,
imageIndex,
(int)ListViewNativeMethods.ImageListDrawFlags.ILD_SELECTED);
g.DrawIcon(Icon.FromHandle(hIcon), imageRect);
ListViewNativeMethods.DestroyIcon(hIcon);
}
else
{
Image image = item.ImageList.Images[imageIndex];
g.DrawImage(
image,
imageRect,
0,
0,
image.Width,
image.Height,
GraphicsUnit.Pixel);
}
Rectangle textRect = new Rectangle(
imageRect.Right + 3,
bounds.Y,
bounds.Width - imageRect.Right - 3,
bounds.Height);
TextRenderer.DrawText(
g,
item.Text,
item.Font,
textRect,
item.ForeColor,
flags);
}
else
{
bounds.X += 3;
TextRenderer.DrawText(
g,
e.SubItem.Text,
e.SubItem.Font,
bounds,
e.SubItem.ForeColor,
flags);
}
}
