实例介绍
自定义winform大部分控件,并附有测试用例,
winform 自定义空,按钮,多选框,单选框,提示框

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.ComponentModel;
using System.Drawing.Text;
namespace TX.Framework.WindowUI.Controls
{
[ToolboxBitmap(typeof(TabControl))]
public class TXTabControl : TabControl
{
#region Fields
private UpDownButtonNativeWindow _upDownButtonNativeWindow;
private Color _BaseTabolor = SkinManager.CurrentSkin.DefaultControlColor.First;
private Color _BackColor = SkinManager.CurrentSkin.BaseColor;
private Color _BorderColor = SkinManager.CurrentSkin.BorderColor;
private Color _HeightLightTabColor = SkinManager.CurrentSkin.HeightLightControlColor.First;
private Color _CheckedTabColor = SkinManager.CurrentSkin.FocusedControlColor.First;
private int _TabCornerRadius = 3;
private int _TabMargin = 0;
private Font _CaptionFont = SystemFonts.DefaultFont;
private Color _CaptionForceColor = SystemColors.ControlText;
private const string UpDownButtonClassName = "msctls_updown32";
private EnumTabStyle _TabStyle = EnumTabStyle.AnglesWing;
private static readonly object EventPaintUpDownButton = new object();
#endregion
#region Constructors
public TXTabControl()
: base()
{
SetStyles();
base.Appearance = TabAppearance.Buttons;
}
#endregion
#region Events
public event UpDownButtonPaintEventHandler PaintUpDownButton
{
add { base.Events.AddHandler(EventPaintUpDownButton, value); }
remove { base.Events.RemoveHandler(EventPaintUpDownButton, value); }
}
#endregion
#region Properties
[Category("TXProperties")]
[DefaultValue(typeof(Font), "DefaultFont")]
[Description("标题栏的字体")]
public Font CaptionFont
{
get { return this._CaptionFont; }
set
{
if (value != null)
{
this._CaptionFont = value;
}
else
{
this._CaptionFont = SystemFonts.CaptionFont; ;
}
base.Invalidate();
}
}
[Category("TXProperties")]
[DefaultValue(typeof(Color), "ControlText")]
[Description("标题栏的字体颜色")]
public Color CaptionForceColor
{
get { return this._CaptionForceColor; }
set
{
this._CaptionForceColor = value;
base.Invalidate();
}
}
[Category("TXProperties")]
[Description("标签的基本背景色")]
public Color BaseTabColor
{
get { return _BaseTabolor; }
set
{
_BaseTabolor = value;
base.Invalidate(true);
}
}
[Category("TXProperties")]
[Description("标签按钮的展现方式")]
[DefaultValue(TabAppearance.Buttons)]
public new TabAppearance Appearance
{
get { return base.Appearance; }
set
{
base.Appearance = value;
base.Invalidate(true);
}
}
[Category("TXProperties")]
[Description("标签之间的间距")]
[DefaultValue(0)]
public int TabMargin
{
get { return this._TabMargin; }
set
{
this._TabMargin = value > 0 ? value : 0;
base.Invalidate(true);
}
}
[Category("TXProperties")]
[Description("标签按钮的边框样式")]
[DefaultValue(EnumTabStyle.AnglesWing)]
public EnumTabStyle TabStyle
{
get { return this._TabStyle; }
set
{
this._TabStyle = value;
base.Invalidate();
}
}
[Browsable(true)]
[Category("TXProperties")]
[Description("基本背景色")]
public override Color BackColor
{
get { return _BackColor; }
set
{
_BackColor = value;
base.Invalidate(true);
}
}
[Category("TXProperties")]
[Description("边框色")]
public Color BorderColor
{
get { return _BorderColor; }
set
{
_BorderColor = value;
base.Invalidate(true);
}
}
[Category("TXProperties")]
[Description("标签的高亮背景色")]
public Color HeightLightTabColor
{
get { return _HeightLightTabColor; }
set
{
_HeightLightTabColor = value;
base.Invalidate(true);
}
}
[Category("TXProperties")]
[Description("标签的选中背景色")]
public Color CheckedTabColor
{
get { return this._CheckedTabColor; }
set
{
this._CheckedTabColor = value;
base.Invalidate(true);
}
}
[Category("TXProperties")]
[Description("标签的上面圆角半径值")]
public int TabCornerRadius
{
get { return this._TabCornerRadius; }
set
{
this._TabCornerRadius = value > 0 ? value : 0;
base.Invalidate(true);
}
}
internal IntPtr UpDownButtonHandle
{
get { return FindUpDownButton(); }
}
#endregion
#region Protected Methods
protected virtual void OnPaintUpDownButton(
UpDownButtonPaintEventArgs e)
{
Graphics g = e.Graphics;
Rectangle rect = e.ClipRectangle;
Color upButtonBaseColor = SkinManager.CurrentSkin.DefaultControlColor.First;
Color upButtonBorderColor = this._BorderColor;
Color upButtonArrowColor = Color.Green;
Color downButtonBaseColor = SkinManager.CurrentSkin.DefaultControlColor.First;
Color downButtonBorderColor = this._BorderColor;
Color downButtonArrowColor = Color.Green;
Rectangle upButtonRect = rect;
upButtonRect.X = 2;
upButtonRect.Y = 2;
upButtonRect.Width = rect.Width / 2 - 4;
upButtonRect.Height -= 4;
Rectangle downButtonRect = rect;
downButtonRect.X = upButtonRect.Right;
downButtonRect.Y = 2;
downButtonRect.Width = rect.Width / 2 - 4;
downButtonRect.Height -= 4;
if (Enabled)
{
if (e.MouseOver)
{
if (e.MousePress)
{
if (e.MouseInUpButton)
{
upButtonBaseColor = SkinManager.CurrentSkin.HeightLightControlColor.First;
}
else
{
downButtonBaseColor = SkinManager.CurrentSkin.HeightLightControlColor.First;
}
}
else
{
if (e.MouseInUpButton)
{
upButtonBaseColor = SkinManager.CurrentSkin.DefaultControlColor.First;
}
else
{
downButtonBaseColor = SkinManager.CurrentSkin.DefaultControlColor.First;
}
}
}
}
else
{
upButtonBaseColor = SystemColors.Control;
upButtonBorderColor = SystemColors.ControlDark;
upButtonArrowColor = SystemColors.ControlDark;
downButtonBaseColor = SystemColors.Control;
downButtonBorderColor = SystemColors.ControlDark;
downButtonArrowColor = SystemColors.ControlDark;
}
GDIHelper.FillPath(g, new RoundRectangle(rect, new CornerRadius()), this._BackColor, this._BackColor);
RenderButton(
g,
upButtonRect,
upButtonBaseColor,
upButtonBorderColor,
upButtonArrowColor,
ArrowDirection.Left);
RenderButton(
g,
downButtonRect,
downButtonBaseColor,
downButtonBorderColor,
downButtonArrowColor,
ArrowDirection.Right);
UpDownButtonPaintEventHandler handler =
base.Events[EventPaintUpDownButton] as UpDownButtonPaintEventHandler;
if (handler != null)
{
handler(this, e);
}
}
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
base.Invalidate();
}
protected override void OnMouseLeave(EventArgs e)
{
base.OnMouseLeave(e);
base.Invalidate();
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
DrawTabContrl(e.Graphics);
}
protected override void OnHandleCreated(EventArgs e)
{
base.OnHandleCreated(e);
if (UpDownButtonHandle != IntPtr.Zero)
{
if (_upDownButtonNativeWindow == null)
{
_upDownButtonNativeWindow = new UpDownButtonNativeWindow(this);
}
}
}
protected override void OnCreateControl()
{
base.OnCreateControl();
if (UpDownButtonHandle != IntPtr.Zero)
{
if (_upDownButtonNativeWindow == null)
{
_upDownButtonNativeWindow = new UpDownButtonNativeWindow(this);
}
}
}
protected override void OnHandleDestroyed(EventArgs e)
{
base.OnHandleDestroyed(e);
if (_upDownButtonNativeWindow != null)
{
_upDownButtonNativeWindow.Dispose();
_upDownButtonNativeWindow = null;
}
}
protected override void OnControlAdded(ControlEventArgs e)
{
base.OnControlAdded(e);
if (UpDownButtonHandle != IntPtr.Zero)
{
if (_upDownButtonNativeWindow == null)
{
_upDownButtonNativeWindow = new UpDownButtonNativeWindow(this);
}
}
}
protected override void OnSizeChanged(EventArgs e)
{
base.OnSizeChanged(e);
if (UpDownButtonHandle != IntPtr.Zero)
{
if (_upDownButtonNativeWindow == null)
{
_upDownButtonNativeWindow = new UpDownButtonNativeWindow(this);
}
}
}
#endregion
#region Help Methods
private IntPtr FindUpDownButton()
{
return Win32.FindWindowEx(
base.Handle,
IntPtr.Zero,
UpDownButtonClassName,
null);
}
private void SetStyles()
{
this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
this.SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
this.SetStyle(ControlStyles.DoubleBuffer, true);
base.SetStyle(
ControlStyles.UserPaint |
ControlStyles.ResizeRedraw |
ControlStyles.SupportsTransparentBackColor, true);
base.UpdateStyles();
}
private void DrawTabContrl(Graphics g)
{
g.SmoothingMode = SmoothingMode.AntiAlias;
g.InterpolationMode = InterpolationMode.HighQualityBilinear;
g.TextRenderingHint = TextRenderingHint.AntiAlias;
DrawDrawBackgroundAndHeader(g);
DrawTabPages(g);
DrawBorder(g);
}
private void DrawDrawBackgroundAndHeader(Graphics g)
{
int x = 0;
int y = 0;
int width = 0;
int height = 0;
switch (Alignment)
{
case TabAlignment.Top:
x = 0;
y = 0;
width = ClientRectangle.Width;
height = ClientRectangle.Height - DisplayRectangle.Height;
break;
case TabAlignment.Bottom:
x = 0;
y = DisplayRectangle.Height;
width = ClientRectangle.Width;
height = ClientRectangle.Height - DisplayRectangle.Height;
break;
case TabAlignment.Left:
x = 0;
y = 0;
width = ClientRectangle.Width - DisplayRectangle.Width;
height = ClientRectangle.Height;
break;
case TabAlignment.Right:
x = DisplayRectangle.Width;
y = 0;
width = ClientRectangle.Width - DisplayRectangle.Width;
height = ClientRectangle.Height;
break;
}
Rectangle headerRect = new Rectangle(x, y, width, height);
//Color backColor = Enabled ? _BackColor : SystemColors.Control;
using (SolidBrush brush = new SolidBrush(this._BackColor))
{
g.FillRectangle(brush, ClientRectangle);
g.FillRectangle(brush, headerRect);
}
}
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 (Win32.IsWindowVisible(upDownButtonHandle))
{
RECT upDownButtonRect = new RECT();
Win32.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 = _BaseTabolor;
Color borderColor = _BorderColor;
Blend blend = new Blend();
blend.Positions = new float[] { 0f, 0.3f, 0.5f, 0.7f, 1.0f };
blend.Factors = new float[] { 0.1f, 0.3f, 0.5f, 0.8f, 1.0f };
if (selected)
{
baseColor = this._CheckedTabColor;
}
else if (hover)
{
baseColor = this._HeightLightTabColor;
blend.Positions = new float[] { 0f, 0.3f, 0.6f, 0.8f, 1f };
blend.Factors = new float[] { .2f, 0.4f, 0.6f, 0.5f, .4f };
}
Rectangle exRect = new Rectangle(tabRect.Left, tabRect.Bottom, tabRect.Width, 1);
g.SetClip(exRect, CombineMode.Exclude);
CornerRadius cr = new CornerRadius(this._TabCornerRadius, this._TabCornerRadius, 0, 0);
tabRect.X = this._TabMargin; tabRect.Width -= this._TabMargin;
tabRect.Y ;
tabRect.Height--;
RoundRectangle roundRect = new RoundRectangle(tabRect, cr);
GDIHelper.InitializeGraphics(g);
switch (this._TabStyle)
{
case EnumTabStyle.AnglesWing:
cr = new CornerRadius(this._TabCornerRadius);
tabRect.X = this._TabCornerRadius;tabRect.Width-=this._TabCornerRadius*2;
roundRect = new RoundRectangle(tabRect, cr);
using (GraphicsPath path = roundRect.ToGraphicsAnglesWingPath())
{
using (LinearGradientBrush brush = new LinearGradientBrush(roundRect.Rect, baseColor, this._BackColor, LinearGradientMode.Vertical))
{
brush.Blend = blend;
g.FillPath(brush, path);
}
}
using (GraphicsPath path = roundRect.ToGraphicsAnglesWingPath())
{
using (Pen pen = new Pen(this._BorderColor, 1))
{
g.DrawPath(pen, path);
}
}
break;
case EnumTabStyle.Default:
GDIHelper.FillPath(g, roundRect, baseColor, this._BackColor, blend);
GDIHelper.DrawPathBorder(g, roundRect, this._BorderColor);
break;
}
g.ResetClip();
if (this.Alignment == TabAlignment.Top)
{
Image img = null;
Size imgSize = Size.Empty;
if (this.ImageList != null && page.ImageIndex >= 0)
{
img = this.ImageList.Images[page.ImageIndex];
imgSize = img.Size;
}
GDIHelper.DrawImageAndString(g, tabRect, img, imgSize, page.Text, this._CaptionFont, this._CaptionForceColor);
}
else
{
bool hasImage = DrawTabImage(g, page, tabRect);
DrawtabText(g, page, tabRect, hasImage);
}
}
if (hasSetClip)
{
g.ResetClip();
}
}
private void DrawtabText(
Graphics g, TabPage page, Rectangle tabRect, bool hasImage)
{
Rectangle textRect = tabRect;
RectangleF newTextRect;
StringFormat sf;
switch (Alignment)
{
case TabAlignment.Top:
case TabAlignment.Bottom:
if (hasImage)
{
textRect.X = tabRect.X _TabCornerRadius / 2 tabRect.Height - 2;
textRect.Width = tabRect.Width - _TabCornerRadius - tabRect.Height;
}
TextRenderer.DrawText(
g,
page.Text,
page.Font,
textRect,
page.ForeColor);
break;
case TabAlignment.Left:
if (hasImage)
{
textRect.Height = tabRect.Height - tabRect.Width 2;
}
g.TranslateTransform(textRect.X, textRect.Bottom);
g.RotateTransform(270F);
sf = new StringFormat(StringFormatFlags.NoWrap);
sf.Alignment = StringAlignment.Center;
sf.LineAlignment = StringAlignment.Center;
sf.Trimming = StringTrimming.Character;
newTextRect = textRect;
newTextRect.X = 0;
newTextRect.Y = 0;
newTextRect.Width = textRect.Height;
newTextRect.Height = textRect.Width;
using (Brush brush = new SolidBrush(page.ForeColor))
{
g.DrawString(
page.Text,
page.Font,
brush,
newTextRect,
sf);
}
g.ResetTransform();
break;
case TabAlignment.Right:
if (hasImage)
{
textRect.Y = tabRect.Y _TabCornerRadius / 2 tabRect.Width - 2;
textRect.Height = tabRect.Height - _TabCornerRadius - tabRect.Width;
}
g.TranslateTransform(textRect.Right, textRect.Y);
g.RotateTransform(90F);
sf = new StringFormat(StringFormatFlags.NoWrap);
sf.Alignment = StringAlignment.Center;
sf.LineAlignment = StringAlignment.Center;
sf.Trimming = StringTrimming.Character;
newTextRect = textRect;
newTextRect.X = 0;
newTextRect.Y = 0;
newTextRect.Width = textRect.Height;
newTextRect.Height = textRect.Width;
using (Brush brush = new SolidBrush(page.ForeColor))
{
g.DrawString(
page.Text,
page.Font,
brush,
newTextRect,
sf);
}
g.ResetTransform();
break;
}
}
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 (Win32.IsWindowVisible(upDownButtonHandle))
{
RECT upDownButtonRect = new RECT();
Win32.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;
}
}
int margin = 0;
if (this._TabStyle == EnumTabStyle.AnglesWing)
{
margin = this._TabCornerRadius / 2;
}
switch (Alignment)
{
case TabAlignment.Top:
points[0] = new Point(
tabRect.X this._TabMargin margin,
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 - margin,
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);
}
}
}
internal void RenderArrowInternal(
Graphics g,
Rectangle dropDownRect,
ArrowDirection direction,
Brush brush)
{
Point point = new Point(
dropDownRect.Left (dropDownRect.Width / 2),
dropDownRect.Top (dropDownRect.Height / 2));
Point[] points = null;
switch (direction)
{
case ArrowDirection.Left:
points = new Point[] {
new Point(point.X 2, point.Y - 6),
new Point(point.X 2, point.Y 6),
new Point(point.X - 4, point.Y) };
break;
case ArrowDirection.Up:
points = new Point[] {
new Point(point.X - 4, point.Y 2),
new Point(point.X 4, point.Y 2),
new Point(point.X, point.Y - 2) };
break;
case ArrowDirection.Right:
points = new Point[] {
new Point(point.X - 2, point.Y - 6),
new Point(point.X - 2, point.Y 6),
new Point(point.X 4, point.Y) };
break;
default:
points = new Point[] {
new Point(point.X - 4, point.Y - 2),
new Point(point.X 4, point.Y - 2),
new Point(point.X, point.Y 2) };
break;
}
g.FillPolygon(brush, points);
}
internal void RenderButton(
Graphics g,
Rectangle rect,
Color baseColor,
Color borderColor,
Color arrowColor,
ArrowDirection direction)
{
CornerRadius cr = new CornerRadius();
switch (direction)
{
case ArrowDirection.Left:
cr = new CornerRadius(2, 0, 2, 0);
break;
case ArrowDirection.Right:
cr = new CornerRadius(0, 2, 0, 2);
break;
}
RoundRectangle roundRect = new RoundRectangle(rect, cr);
GDIHelper.FillPath(g, roundRect, baseColor, baseColor);
GDIHelper.DrawPathBorder(g, roundRect);
using (SolidBrush brush = new SolidBrush(arrowColor))
{
RenderArrowInternal(
g,
rect,
direction,
brush);
}
}
internal void RenderTabBackgroundInternal(
Graphics g,
Rectangle rect,
Color baseColor,
Color borderColor,
float basePosition,
LinearGradientMode mode)
{
using (GraphicsPath path = CreateTabPath(rect))
{
using (LinearGradientBrush brush = new LinearGradientBrush(
rect, Color.Transparent, Color.Transparent, mode))
{
Color[] colors = new Color[4];
colors[0] = GetColor(baseColor, 0, 35, 24, 9);
colors[1] = GetColor(baseColor, 0, 13, 8, 3);
colors[2] = baseColor;
colors[3] = GetColor(baseColor, 0, 68, 69, 54);
ColorBlend blend = new ColorBlend();
blend.Positions =
new float[] { 0.0f, basePosition, basePosition 0.05f, 1.0f };
blend.Colors = colors;
brush.InterpolationColors = blend;
g.FillPath(brush, path);
}
if (baseColor.A > 80)
{
Rectangle rectTop = rect;
if (mode == LinearGradientMode.Vertical)
{
rectTop.Height = (int)(rectTop.Height * basePosition);
}
else
{
rectTop.Width = (int)(rect.Width * basePosition);
}
using (SolidBrush brushAlpha =
new SolidBrush(Color.FromArgb(80, 255, 255, 255)))
{
g.FillRectangle(brushAlpha, rectTop);
}
}
rect.Inflate(-1, -1);
using (GraphicsPath path1 = CreateTabPath(rect))
{
using (Pen pen = new Pen(Color.FromArgb(255, 255, 255)))
{
if (Multiline)
{
g.DrawPath(pen, path1);
}
else
{
g.DrawLines(pen, path1.PathPoints);
}
}
}
using (Pen pen = new Pen(borderColor))
{
if (Multiline)
{
g.DrawPath(pen, path);
}
{
g.DrawLines(pen, path.PathPoints);
}
}
}
}
private bool DrawTabImage(Graphics g, TabPage page, Rectangle rect)
{
bool hasImage = false;
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;
Rectangle destRect = Rectangle.Empty;
Rectangle srcRect = new Rectangle(Point.Empty, image.Size);
switch (Alignment)
{
case TabAlignment.Top:
case TabAlignment.Bottom:
destRect = new Rectangle(
rect.X _TabCornerRadius / 2 2,
rect.Y 2,
rect.Height - 4,
rect.Height - 4);
break;
case TabAlignment.Left:
destRect = new Rectangle(
rect.X 2,
rect.Bottom - (rect.Width - 4) - _TabCornerRadius / 2 - 2,
rect.Width - 4,
rect.Width - 4);
break;
case TabAlignment.Right:
destRect = new Rectangle(
rect.X 2,
rect.Y _TabCornerRadius / 2 2,
rect.Width - 4,
rect.Width - 4);
break;
}
g.DrawImage(
image,
destRect,
srcRect,
GraphicsUnit.Pixel);
}
}
return hasImage;
}
private GraphicsPath CreateTabPath(Rectangle rect)
{
GraphicsPath path = new GraphicsPath();
switch (Alignment)
{
case TabAlignment.Top:
rect.X ;
rect.Width -= 2;
path.AddLine(
rect.X,
rect.Bottom,
rect.X,
rect.Y _TabCornerRadius / 2);
path.AddArc(
rect.X,
rect.Y,
_TabCornerRadius,
_TabCornerRadius,
180F,
90F);
path.AddArc(
rect.Right - _TabCornerRadius,
rect.Y,
_TabCornerRadius,
_TabCornerRadius,
270F,
90F);
path.AddLine(
rect.Right,
rect.Y _TabCornerRadius / 2,
rect.Right,
rect.Bottom);
break;
case TabAlignment.Bottom:
rect.X ;
rect.Width -= 2;
path.AddLine(
rect.X,
rect.Y,
rect.X,
rect.Bottom - _TabCornerRadius / 2);
path.AddArc(
rect.X,
rect.Bottom - _TabCornerRadius,
_TabCornerRadius,
_TabCornerRadius,
180,
-90);
path.AddArc(
rect.Right - _TabCornerRadius,
rect.Bottom - _TabCornerRadius,
_TabCornerRadius,
_TabCornerRadius,
90,
-90);
path.AddLine(
rect.Right,
rect.Bottom - _TabCornerRadius / 2,
rect.Right,
rect.Y);
break;
case TabAlignment.Left:
rect.Y ;
rect.Height -= 2;
path.AddLine(
rect.Right,
rect.Y,
rect.X _TabCornerRadius / 2,
rect.Y);
path.AddArc(
rect.X,
rect.Y,
_TabCornerRadius,
_TabCornerRadius,
270F,
-90F);
path.AddArc(
rect.X,
rect.Bottom - _TabCornerRadius,
_TabCornerRadius,
_TabCornerRadius,
180F,
-90F);
path.AddLine(
rect.X _TabCornerRadius / 2,
rect.Bottom,
rect.Right,
rect.Bottom);
break;
case TabAlignment.Right:
rect.Y ;
rect.Height -= 2;
path.AddLine(
rect.X,
rect.Y,
rect.Right - _TabCornerRadius / 2,
rect.Y);
path.AddArc(
rect.Right - _TabCornerRadius,
rect.Y,
_TabCornerRadius,
_TabCornerRadius,
270F,
90F);
path.AddArc(
rect.Right - _TabCornerRadius,
rect.Bottom - _TabCornerRadius,
_TabCornerRadius,
_TabCornerRadius,
0F,
90F);
path.AddLine(
rect.Right - _TabCornerRadius / 2,
rect.Bottom,
rect.X,
rect.Bottom);
break;
}
path.CloseFigure();
return path;
}
private Color GetColor(Color colorBase, int a, int r, int g, int b)
{
int a0 = colorBase.A;
int r0 = colorBase.R;
int g0 = colorBase.G;
int b0 = colorBase.B;
if (a a0 > 255) { a = 255; } else { a = Math.Max(a a0, 0); }
if (r r0 > 255) { r = 255; } else { r = Math.Max(r r0, 0); }
if (g g0 > 255) { g = 255; } else { g = Math.Max(g g0, 0); }
if (b b0 > 255) { b = 255; } else { b = Math.Max(b b0, 0); }
return Color.FromArgb(a, r, g, b);
}
#endregion
#region UpDownButtonNativeWindow
private class UpDownButtonNativeWindow : NativeWindow, IDisposable
{
private TXTabControl _owner;
private bool _bPainting;
public UpDownButtonNativeWindow(TXTabControl owner)
: base()
{
_owner = owner;
base.AssignHandle(owner.UpDownButtonHandle);
}
private bool LeftKeyPressed()
{
if (SystemInformation.MouseButtonsSwapped)
{
return (Win32.GetKeyState((int)KeyStatesMasks.VK_RBUTTON) < 0);
}
else
{
return (Win32.GetKeyState((int)KeyStatesMasks.VK_LBUTTON) < 0);
}
}
private void DrawUpDownButton()
{
bool mouseOver = false;
bool mousePress = LeftKeyPressed();
bool mouseInUpButton = false;
RECT rect = new RECT();
Win32.GetClientRect(base.Handle, ref rect);
Rectangle clipRect = Rectangle.FromLTRB(
rect.top, rect.left, rect.right, rect.bottom);
Point cursorPoint = new Point();
Win32.GetCursorPos(ref cursorPoint);
Win32.GetWindowRect(base.Handle, ref rect);
mouseOver = Win32.PtInRect(ref rect, cursorPoint);
cursorPoint.X -= rect.left;
cursorPoint.Y -= rect.top;
mouseInUpButton = cursorPoint.X < clipRect.Width / 2;
using (Graphics g = Graphics.FromHwnd(base.Handle))
{
UpDownButtonPaintEventArgs e =
new UpDownButtonPaintEventArgs(
g,
clipRect,
mouseOver,
mousePress,
mouseInUpButton);
_owner.OnPaintUpDownButton(e);
}
}
protected override void WndProc(ref Message m)
{
switch (m.Msg)
{
case (int)WindowMessages.WM_PAINT:
if (!_bPainting)
{
PAINTSTRUCT ps = new PAINTSTRUCT();
_bPainting = true;
Win32.BeginPaint(m.HWnd, ref ps);
DrawUpDownButton();
Win32.EndPaint(m.HWnd, ref ps);
_bPainting = false;
m.Result = Win32.TRUE;
}
else
{
base.WndProc(ref m);
}
break;
default:
base.WndProc(ref m);
break;
}
}
#region IDisposable 成员
public void Dispose()
{
_owner = null;
base.ReleaseHandle();
}
#endregion
}
#endregion
}
}
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