void Form_FormClosed(object sender, FormClosedEventArgs e)
{
if (sender is BaseForm)
{
var form = (BaseForm)sender;
if (TaskBar != null)
{
TabItem ti = TaskBar.GetItemByTag(form);
if (ti != null)
{
TaskBar.Items.Remove(ti);
}
}
if (form == SelectedForm)
{
SelectedForm = null;
}
if (Forms.Contains(form))
{
Forms.Remove(form);
}
}
}
protected override void DrawItemBackground(TabItemPaintEventArgs e)
{
//base.DrawItemBackground(e);
TaskBar taskBar = e.GetBar <TaskBar>();
Color backColor = e.Bar.ItemBackColor;
switch (e.Status)
{
case UIControlStatus.Selected:
case UIControlStatus.Focused:
if (taskBar.IsActive)
{
backColor = taskBar.SelectedItemBackColor;
}
else
{
backColor = taskBar.InactiveSelectedItemBackColor;
}
break;
case UIControlStatus.Hover:
backColor = taskBar.HoverItemBackColor;
break;
}
if (!backColor.IsEmpty)
{
GraphicsPath path = PaintHelper.GetRoundRectangle(e.Bounds, taskBar.TabRounded, taskBar.TabRounded, 0, 0);
//if (e.Status == UIControlStatus.Hover)
//{
// LinearGradientBrush backBrush = new LinearGradientBrush(e.Bounds, backColor, backColor, 90.0f);
// ColorBlend cb = new ColorBlend(3);
// cb.Colors = new Color[] { PaintHelper.GetLightColor(backColor), backColor, backColor };
// cb.Positions = new float[] { 0.0f, 0.5f, 1.0f };
// backBrush.InterpolationColors = cb;
// e.Graphics.FillPath(backBrush, path);
//}
//else
//{
SolidBrush backBrush = new SolidBrush(backColor);
e.Graphics.FillPath(backBrush, path);
//}
//
if ((e.Status == UIControlStatus.Normal || e.Status == UIControlStatus.Hover) &&
e.Bounds.Height > 10)
{
Rectangle rectShadow = e.Bounds;
rectShadow.Y = rectShadow.Bottom - 6;
rectShadow.Height = 5;
var brush = new LinearGradientBrush(rectShadow, Color.Transparent,
PaintHelper.AdjustColorSLess(PaintHelper.GetDarkColor(backColor), 20), 90.0f);
rectShadow.Y++;//规避一个Gdi+错误, 会导致第一行有一个很深的线
//e.Graphics.FillRectangle(Brushes.Red, rectShadow);
e.Graphics.FillRectangle(brush, rectShadow);
}
}
}
void Form_Activated(object sender, EventArgs e)
{
if (sender is Form && TaskBar != null)
{
Form form = (Form)sender;
TaskBar.SelectByTag(form);
}
}
void Form_TextChanged(object sender, EventArgs e)
{
if (sender is Form && TaskBar != null)
{
Form form = (Form)sender;
TabItem item = TaskBar.GetItemByTag(form);
if (item != null)
{
item.Text = form.Text;
}
}
}