/// <summary>
/// Selects the tab at the specified index.
/// </summary>
/// <param name="i">The index of the tab to be selected.</param>
private void SelectTab(int i)
{
if (mSelectedTab != i && i >= 0 && i < mTabPages.Count)
{
if (mSelectedTab >= 0 && mSelectedTab < mTabPages.Count)
{
mTabPages[mSelectedTab].DeselectTab();
//this.Controls.Remove(mTabPages[mSelectedTab]);
mTabPages[mSelectedTab].Visible = false;
}
if (TabInView(i))
{
mSelectedTab = i;
//this.Controls.Add(mTabPages[i]);
mTabPages[i].Visible = true;
mTabPages[i].SelectTab();
}
else
{
DynamicTabPage tab = mTabPages[i];
mTabPages.RemoveAt(i);
mTabPages.Insert(0, tab);
mSelectedTab = 0;
//this.Controls.Add(mTabPages[0]);
mTabPages[0].Visible = true;
mTabPages[0].SelectTab();
}
OnSelectedIndexChanged(this, new EventArgs());
Invalidate();
}
}
/// <summary>
/// Called when a tab page has been removed.
/// </summary>
/// <param name="index">The index of the removed tab page.</param>
/// <param name="page">The tab page being removed.</param>
internal void OnTabPageRemoved(int index, DynamicTabPage page)
{
page.TextChanged -= new EventHandler(this.DynamicTabControl_TextChanged);
if (index == mSelectedTab)
{
page.DeselectTab();
this.Controls.Remove(page);
if (mSelectedTab < mTabPages.Count)
{
//this.Controls.Add(mTabPages[mSelectedTab]);
mTabPages[mSelectedTab].Visible = true;
mTabPages[mSelectedTab].SelectTab();
}
else
{
mSelectedTab = mTabPages.Count - 1;
if (mSelectedTab >= 0)
{
//this.Controls.Add(mTabPages[mSelectedTab]);
mTabPages[mSelectedTab].Visible = true;
mTabPages[mSelectedTab].SelectTab();
}
}
OnSelectedIndexChanged(this, new EventArgs());
}
else if (index < mSelectedTab)
{
--mSelectedTab;
OnSelectedIndexChanged(this, new EventArgs());
}
Invalidate();
}
/// <summary>
/// Called to draw a tab.
/// </summary>
/// <param name="offX">The X offset of the tab.</param>
/// <param name="size">The size of the tab in pixels.</param>
/// <param name="graphics">The GDI+ graphics object.</param>
/// <param name="text">The text to be displayed on the tab.</param>
/// <param name="fmt">The format of the text.</param>
/// <param name="clip">The clipping region.</param>
/// <param name="selectedTab">The currently selected tab.</param>
private void DrawTab(int offX, SizeF size, Graphics graphics, string text, StringFormat fmt, bool clip, bool selectedTab, DynamicTabPage tabPage)
{
Rectangle tabRect = new Rectangle(offX, 3, (int)size.Width + SLIDEWIDTH, TABHEIGHT);
Point[] points =
{
new Point(tabRect.Left, tabRect.Bottom),
new Point(tabRect.Left + CURVEOFFSETX, tabRect.Bottom - CURVEOFFSETY),
new Point(tabRect.Left + SLIDEWIDTH, tabRect.Top),
new Point(tabRect.Right - 2, tabRect.Top),
new Point(tabRect.Right, tabRect.Top + 2),
new Point(tabRect.Right, tabRect.Bottom),
};
if (clip)
{
graphics.Clip = new Region(new Rectangle(tabRect.Left + SLIDEWIDTH / 2 + 1, tabRect.Top, tabRect.Width, tabRect.Height + 1));
}
else
{
graphics.Clip = new Region();
}
graphics.FillPolygon(tabPage.TabBackgroundColor, points);
graphics.DrawPolygon(SystemPens.ControlDark, points);
RectangleF rect = new RectangleF((float)(tabRect.Left + CURVEOFFSETX), (float)tabRect.Top, (float)(tabRect.Right - tabRect.Left - CURVEOFFSETX), (float)tabRect.Bottom - (float)tabRect.Top);
graphics.DrawString(text, selectedTab ? mBoldFont : this.Font, tabPage.TabForegroundColor, rect, fmt);
if (selectedTab)
{
graphics.DrawLine(SystemPens.Window, tabRect.Left + 1, tabRect.Bottom, tabRect.Right - 1, tabRect.Bottom);
}
}