private void DrawBorder(Graphics g)
{
if (SelectedIndex != -1)
{
Rectangle tabRect = GetTabRect(SelectedIndex);
Rectangle clipRect = ClientRectangle;
Point[] points = new Point[6];
IntPtr upDownButtonHandle = UpDownButtonHandle;
bool hasUpDown = upDownButtonHandle != IntPtr.Zero;
if (hasUpDown)
{
if (NativeMethods.IsWindowVisible(upDownButtonHandle))
{
NativeMethods.RECT upDownButtonRect = new NativeMethods.RECT();
NativeMethods.GetWindowRect(upDownButtonHandle, ref upDownButtonRect);
Rectangle upDownRect = Rectangle.FromLTRB(upDownButtonRect.Left, upDownButtonRect.Top, upDownButtonRect.Right, upDownButtonRect.Bottom);
upDownRect = RectangleToClient(upDownRect);
tabRect.X = tabRect.X > upDownRect.X ? upDownRect.X : tabRect.X;
tabRect.Width = tabRect.Right > upDownRect.X ? upDownRect.X - tabRect.X : tabRect.Width;
}
}
switch (Alignment)
{
case TabAlignment.Top:
points[0] = new Point(
tabRect.X,
tabRect.Bottom);
points[1] = new Point(clipRect.X, tabRect.Bottom);
points[2] = new Point(clipRect.X, clipRect.Bottom - 1);
points[3] = new Point(clipRect.Right - 1, clipRect.Bottom - 1);
points[4] = new Point(clipRect.Right - 1, tabRect.Bottom);
points[5] = new Point(tabRect.Right, tabRect.Bottom);
break;
case TabAlignment.Bottom:
points[0] = new Point(tabRect.X, tabRect.Y);
points[1] = new Point(clipRect.X, tabRect.Y);
points[2] = new Point(clipRect.X, clipRect.Y);
points[3] = new Point(clipRect.Right - 1, clipRect.Y);
points[4] = new Point(clipRect.Right - 1, tabRect.Y);
points[5] = new Point(tabRect.Right, tabRect.Y);
break;
case TabAlignment.Left:
points[0] = new Point(tabRect.Right, tabRect.Y);
points[1] = new Point(tabRect.Right, clipRect.Y);
points[2] = new Point(clipRect.Right - 1, clipRect.Y);
points[3] = new Point(clipRect.Right - 1, clipRect.Bottom - 1);
points[4] = new Point(tabRect.Right, clipRect.Bottom - 1);
points[5] = new Point(tabRect.Right, tabRect.Bottom);
break;
case TabAlignment.Right:
points[0] = new Point(tabRect.X, tabRect.Y);
points[1] = new Point(tabRect.X, clipRect.Y);
points[2] = new Point(clipRect.X, clipRect.Y);
points[3] = new Point(clipRect.X, clipRect.Bottom - 1);
points[4] = new Point(tabRect.X, clipRect.Bottom - 1);
points[5] = new Point(tabRect.X, tabRect.Bottom);
break;
}
using (Pen pen = new Pen(_borderColor))
{
g.DrawLines(pen, points);
}
}
}
private void DrawTabPagesMouseMove(Graphics g)
{
Rectangle tabRect;
Point cusorPoint = PointToClient(MousePosition);
bool hover;
bool selected;
bool hasSetClip = false;
bool alignHorizontal = (Alignment == TabAlignment.Top || Alignment == TabAlignment.Bottom);
LinearGradientMode mode = alignHorizontal ? LinearGradientMode.Vertical : LinearGradientMode.Horizontal;
if (alignHorizontal)
{
IntPtr upDownButtonHandle = UpDownButtonHandle;
bool hasUpDown = upDownButtonHandle != IntPtr.Zero;
if (hasUpDown)
{
if (NativeMethods.IsWindowVisible(upDownButtonHandle))
{
NativeMethods.RECT upDownButtonRect = new NativeMethods.RECT();
NativeMethods.GetWindowRect(upDownButtonHandle, ref upDownButtonRect);
Rectangle upDownRect = Rectangle.FromLTRB(upDownButtonRect.Left,
upDownButtonRect.Top,
upDownButtonRect.Right,
upDownButtonRect.Bottom
);
upDownRect = RectangleToClient(upDownRect);
switch (Alignment)
{
case TabAlignment.Top:
upDownRect.Y = 0;
break;
case TabAlignment.Bottom:
upDownRect.Y = ClientRectangle.Height - DisplayRectangle.Height;
break;
}
upDownRect.Height = ClientRectangle.Height;
g.SetClip(upDownRect, CombineMode.Exclude);
hasSetClip = true;
}
}
}
for (int index = 0; index < base.TabCount; index++)
{
TabPage page = TabPages[index];
tabRect = GetTabRect(index);
hover = tabRect.Contains(cusorPoint);
selected = SelectedIndex == index;
Color baseColor = _baseColor;
Color borderColor = _borderColor;
if (selected)
{
baseColor = GetColor(_baseColor, 0, -45, -30, -14);
}
else if (hover)
{
baseColor = GetColor(_baseColor, 0, 35, 24, 9);
}
RenderTabBackgroundInternal(g,
tabRect,
baseColor,
borderColor,
.45F,
mode
);
bool hasImage = DrawTabImage(g, page, tabRect);
DrawtabText(g, page, tabRect, hasImage);//写入text
if (this.SelectedIndex == index)
{
if (this.TabCount != 1)
{
if (ShowClose)
{ ////再画一个矩形框
using (Pen p = new Pen(Color.White))
{
tabRect.Offset(tabRect.Width - (CLOSE_SIZE + 3), 5);
tabRect.Width = CLOSE_SIZE;
tabRect.Height = CLOSE_SIZE;
g.DrawRectangle(p, tabRect);
}
//画关闭符号
using (Pen p = new Pen(Color.Brown, 2)) //鼠标指向关闭键时，颜色Color.Brown为早红
{
//画"\"线
Point p1 = new Point(tabRect.X + 3, tabRect.Y + 3);
Point p2 = new Point(tabRect.X + tabRect.Width - 3, tabRect.Y + tabRect.Height - 3);
g.DrawLine(p, p1, p2);
//画"/"线
Point p3 = new Point(tabRect.X + 3, tabRect.Y + tabRect.Height - 3);
Point p4 = new Point(tabRect.X + tabRect.Width - 3, tabRect.Y + 3);
g.DrawLine(p, p3, p4);
}
}
}
}
// DrawtabText(g, page, tabRect, hasImage);放在这里不行
}
if (hasSetClip)
{
g.ResetClip();
}
}