private void DrawTabPages(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);
}
if (hasSetClip)
{
g.ResetClip();
}
}
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);
}
}
}
/// <summary>
/// 这个是描绘tab page的方法，我尝试一下描绘其他东西
/// </summary>
/// <param name="g"></param>
private void DrawTabPages(Graphics g)
{
Rectangle tabRect;
Point cusorPoint = PointToClient(MousePosition);
bool hover;
bool selected;
bool hasSetClip = false;
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,
LinearGradientMode.Vertical);
bool hasImage = false;
g.InterpolationMode = InterpolationMode.HighQualityBilinear;
if (ImageList != null)
{
Image image = null;
if (page.ImageIndex != -1)
{
image = ImageList.Images[page.ImageIndex];
}
else if (page.ImageKey != null)
{
image = ImageList.Images[page.ImageKey];
}
if (image != null)
{
hasImage = true;
g.DrawImage(
image,
new Rectangle(
tabRect.X + Radius / 2 + 2,
tabRect.Y + 2,
tabRect.Height - 4,
tabRect.Height - 4),
0,
0,
image.Width,
image.Height,
GraphicsUnit.Pixel);
}
}
Rectangle textRect = tabRect;
textRect.Width = tabRect.Width - 16;
textRect.X = tabRect.X + 4;
if (hasImage)
{
textRect.X = tabRect.X + Radius / 2 + tabRect.Height - 7;
textRect.Width = tabRect.Width - Radius - tabRect.Height;
}
/*
* 绘制关闭图标
* 标签为NoClosePageName的不绘制关闭按钮
*/
if (page.Name != NoClosePageName)
{
Bitmap oImage = CSharpWin.Properties.Resources.close;
Bitmap OImageSelected = CSharpWin.Properties.Resources.clear;
// g.DrawImage(oImage,new PointF(textRect.X+20,textRect.Height-20));
Rectangle closeRect = new Rectangle(tabRect.X + tabRect.Width - 12 - 7,
tabRect.Y + tabRect.Height - 12 - 6, 16, 16);
//Rectangle closeRect = new Rectangle(tabRect.X + tabRect.Width - 12 - 9, tabRect.Y + tabRect.Height - 12 - 6, 16, 16);
if (closeRect.Contains(cusorPoint))
{
g.DrawImage(OImageSelected, closeRect, 0, 0, 16, 16, GraphicsUnit.Pixel);
}
else
{
g.DrawImage(oImage, closeRect, 0, 0, 16, 16, GraphicsUnit.Pixel);
}
}
/*绘制结束*/
/*
* 绘制文字
*/
TextRenderer.DrawText(
g,
page.Text,
page.Font,
textRect,
page.ForeColor);
}
if (hasSetClip)
{
g.ResetClip();
}
}