/// <summary>
/// 绘制项的边框
/// </summary>
/// <param name="g"></param>
/// <param name="bounds"></param>
internal virtual void DrawItemBorder(Graphics g, Rectangle bounds, SEListViewItem item)
{
if (item.Hovered || item.Selected)
{
using (Pen pWhite128 = new Pen(Color.FromArgb(128, Theme.ItemBorderColor)))
{
ImageListViewUtility.DrawRoundedRectangle(g, pWhite128, bounds.Left, bounds.Top, bounds.Width - 1, bounds.Height - 1, _radius);
}
}
}
/// <summary>
/// 绘制项
/// </summary>
/// <param name="g"></param>
/// <param name="item"></param>
/// <param name="state"></param>
/// <param name="bounds"></param>
internal virtual void DrawItem(Graphics g, SEListViewItem item)
{
Rectangle bounds = LayoutManager.GetItemBounds(item);
g.SetClip(bounds);
DrawItemBackground(g, bounds);
// Paint background Selected
if ((LayoutManager.Focused && ((item.State & ListViewItemState.Selected) == ListViewItemState.Selected)) ||
(LayoutManager.Focused == false && ((item.State & ListViewItemState.Selected) == ListViewItemState.Selected) && ((item.State & ListViewItemState.Hovered) == ListViewItemState.Hovered)))
{
using (Brush bSelected = new LinearGradientBrush(bounds, Theme.SelectedColorStart, Theme.SelectedColorEnd, LinearGradientMode.Vertical))
{
ImageListViewUtility.FillRoundedRectangle(g, bSelected, bounds, 4);
}
}
// Paint background unfocused
else if (LayoutManager.Focused == false && ((item.State & ListViewItemState.Selected) == ListViewItemState.Selected))
{
using (Brush bGray64 = new LinearGradientBrush(bounds, Theme.UnFocusedColorStart, Theme.UnFocusedColorEnd, LinearGradientMode.Vertical))
{
ImageListViewUtility.FillRoundedRectangle(g, bGray64, bounds, 4);
}
}
// Paint background Hovered
//如果正处于框选状态，不绘制Hover状态，减小闪烁
if (LayoutManager.MouseSelecting == false && (item.State & ListViewItemState.Hovered) == ListViewItemState.Hovered)
{
using (Brush bHovered = new LinearGradientBrush(bounds, Theme.HoverColorStart, Theme.HoverColorEnd, LinearGradientMode.Vertical))
{
ImageListViewUtility.FillRoundedRectangle(g, bHovered, bounds, 4);
}
}
DrawItemBorder(g, bounds, item);
// Focus rectangle
if (LayoutManager.Focused && ((item.State & ListViewItemState.Focused) == ListViewItemState.Focused))
{
ControlPaint.DrawFocusRectangle(g, bounds);
}
DrawItemContent(g, bounds, item);
}
