public TabButton(TabButton button)
{
Text = button.Text;
ImageIndex = button.ImageIndex;
ActiveForeColor = button.ActiveForeColor;
ActiveBackColor = button.ActiveBackColor;
ActiveFontFamily = button.ActiveFontFamily;
ActiveFontStyle = button.ActiveFontStyle;
InactiveForeColor = button.InactiveForeColor;
InactiveBackColor = button.InactiveBackColor;
InactiveFontFamily = button.InactiveFontFamily;
InactiveFontStyle = button.InactiveFontStyle;
}
/// <summary>
/// コレクションから index 番目のボタンを削除します。
/// </summary>
/// <param name="index">削除するボタンのインデックス。</param>
public void RemoveAt(int index)
{
if (index < 0 || index >= Count)
{
throw new ArgumentOutOfRangeException("index");
}
TabButton button = this[index];
button.parent = null;
button.imageList = null;
innerList.RemoveAt(index);
parent.UpdateButtons();
}
protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
if (e.Button == MouseButtons.Left)
{
TabButton button = GetButtonAt(new Point(e.X, e.Y));
if (button != null && focused != null && focused != button)
{
buttons.InsertBefore(focused, button);
}
}
focused = null;
}
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
if (e.Button == MouseButtons.Left)
{
TabButton button = GetButtonAt(new Point(e.X, e.Y));
if (button != null)
{
focused = button;
SetSelected(focused);
}
}
}
/// <summary>
/// コレクション内の index 番目に button を挿入します。
/// </summary>
/// <param name="index">0 から始まるコレクション内インデックス。</param>
/// <param name="button">index 番目に挿入されるボタン。</param>
public void Insert(int index, TabButton button)
{
if (index < 0 || index > Count)
{
throw new ArgumentOutOfRangeException("index");
}
if (button.parent != null)
{
throw new ArgumentException("このボタンは既に他のタブコントロールに登録されています。");
}
innerList.Insert(index, button);
button.parent = parent;
button.imageList = parent.ImageList;
parent.UpdateButtons();
}
/// <summary>
/// コレクションの末尾に button を追加します。
/// </summary>
/// <param name="button"></param>
/// <returns></returns>
public int Add(TabButton button)
{
if (button == null)
{
throw new ArgumentNullException("button");
}
if (button.parent != null)
{
throw new ArgumentException("このボタンは既に他のタブコントロールに登録されています。");
}
int index = innerList.Add(button);
button.parent = parent;
button.imageList = parent.ImageList;
parent.UpdateButtons();
return(index);
}
private void SetSelected(TabButton button)
{
if (selected != null)
{
Region region = new Region(selected.Bounds);
region.Union(button.Bounds);
selected = button;
Invalidate(region);
}
else
{
selected = button;
Invalidate(selected.Bounds);
}
Update();
OnSelectedChanged(selected);
}
/// <summary>
/// button の位置を target の前に移動します。
/// </summary>
/// <param name="target"></param>
/// <param name="button"></param>
public void InsertBefore(TabButton target, TabButton button)
{
if (target == button)
{
return;
}
if (target.parent == null)
{
throw new ArgumentException("target に親が存在しません。");
}
if (button.parent == null)
{
throw new ArgumentException("button に親が存在しません");
}
if (target.parent != button.parent)
{
throw new ArgumentException("target と button の親が違います。");
}
int newIndex;
if (target.Index < button.Index)
{
newIndex = target.Index;
}
else
{
newIndex = target.Index - 1;
}
innerList.Remove(button);
innerList.Insert(newIndex, button);
parent.UpdateButtons();
}
/// <summary>
/// 指定したボタンのサイズを返します。
/// </summary>
/// <param name="g"></param>
/// <param name="button"></param>
/// <returns></returns>
private Size GetButtonSize(Graphics g, TabButton button)
{
Font tempFont = new Font(
button.IsSelected ? button.ActiveFontFamily : button.InactiveFontFamily, Font.Size,
button.IsSelected ? button.ActiveFontStyle : button.InactiveFontStyle);
Size itemSize = g.MeasureString(button.Text, tempFont).ToSize();
tempFont.Dispose();
// ちょっとずれるので適当に調整
itemSize.Width += 8;
itemSize.Height += 5;
// アイコンが存在すればアイコンサイズを足す
if (button.ImageIndex != -1 && imageList != null)
{
Size imageSize = imageList.ImageSize;
itemSize.Width += imageSize.Width;
itemSize.Height = Math.Max(itemSize.Height, imageSize.Height);
}
return(itemSize);
}
public int IndexOf(TabButton button)
{
return(innerList.IndexOf(button));
}
public bool Contains(TabButton button)
{
return(innerList.Contains(button));
}
private void DrawButton(Graphics g, TabButton button)
{
StringFormat format = StringFormat.GenericDefault;
format.Alignment = StringAlignment.Center;
format.LineAlignment = StringAlignment.Center;
format.FormatFlags = StringFormatFlags.NoWrap;
Rectangle bounds = button.Bounds;
Size imgSize = (imageList != null) ? imageList.ImageSize : new Size(0, 0);
int margin = (button.ImageIndex != -1) ? 5 : 0;
Rectangle imageRect = new Rectangle(bounds.X + margin, bounds.Y + bounds.Height / 2 - imgSize.Height / 2, imgSize.Width, imgSize.Height);
Rectangle textRect = new Rectangle(imageRect.Right, bounds.Y, bounds.Width - imageRect.Width - margin, bounds.Height);
// 境界線を描画
DrawButtonBorder(g, button);
// ホットな背景色を描画
if (hotTrack && button.Equals(hot))
{
Rectangle rc = button.Bounds;
Size size = SystemInformation.Border3DSize;
rc.Width -= 2;
rc.Height -= 2;
using (Brush b = new SolidBrush(Color.FromArgb(50, HotTrackColor)))
g.FillRectangle(b, rc);
using (Pen pen = new Pen(HotTrackColor))
g.DrawRectangle(pen, rc);
}
else
{
// 通常の背景色を描画
using (Brush brush = new SolidBrush(button.IsSelected ?
button.ActiveBackColor : button.InactiveBackColor))
{
Rectangle rc = button.Bounds;
Size border = SystemInformation.Border3DSize;
rc.Inflate(-border.Width, -border.Height);
g.FillRectangle(brush, rc);
}
}
// アイコンを描画
if (imageList != null &&
button.ImageIndex >= 0 && button.ImageIndex < imageList.Images.Count)
{
g.DrawImage(imageList.Images[button.ImageIndex], imageRect);
}
// テキストを描画
Brush foreBrush = new SolidBrush(button.IsSelected ?
button.ActiveForeColor : button.InactiveForeColor);
Font textFont = button.IsSelected ?
new Font(button.ActiveFontFamily, Font.Size, button.ActiveFontStyle) :
new Font(button.InactiveFontFamily, Font.Size, button.InactiveFontStyle);
g.DrawString(button.Text, textFont, foreBrush, textRect, format);
textFont.Dispose();
foreBrush.Dispose();
}