590 lines
15 KiB
C#
590 lines
15 KiB
C#
using System;
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using System.Collections;
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using System.ComponentModel;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Data;
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using System.Windows.Forms;
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using System.Drawing.Design;
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using System.ComponentModel.Design;
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using System.Runtime.InteropServices;
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using System.Diagnostics;
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using System.IO;
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using Toolbox.Library.Forms;
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using System.Windows.Forms;
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namespace FlatTabControl
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{
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/// <summary>
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/// Summary description for FlatTabControl.
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/// </summary>
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[ToolboxBitmap(typeof(System.Windows.Forms.TabControl))] //,
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//Designer(typeof(Designers.FlatTabControlDesigner))]
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public class FlatTabControl : System.Windows.Forms.TabControl
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{
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/// <summary>
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/// Required designer variable.
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/// </summary>
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private System.ComponentModel.Container components = null;
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private SubClass scUpDown = null;
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private bool bUpDown; // true when the button UpDown is required
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private ImageList leftRightImages = null;
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private const int nMargin = 5;
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private Color mBackColor = Color.Empty;
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private Color mShadowColor = Color.Empty;
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public FlatTabControl()
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{
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myBackColor = FormThemes.BaseTheme.FormBackColor;
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// This call is required by the Windows.Forms Form Designer.
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InitializeComponent();
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// double buffering
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this.SetStyle(ControlStyles.UserPaint, true);
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this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
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this.SetStyle(ControlStyles.DoubleBuffer, true);
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this.SetStyle(ControlStyles.ResizeRedraw, true);
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this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
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bUpDown = false;
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this.ControlAdded += new ControlEventHandler(FlatTabControl_ControlAdded);
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this.ControlRemoved += new ControlEventHandler(FlatTabControl_ControlRemoved);
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this.SelectedIndexChanged += new EventHandler(FlatTabControl_SelectedIndexChanged);
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leftRightImages = new ImageList();
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//leftRightImages.ImageSize = new Size(16, 16); // default
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System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(FlatTabControl));
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Bitmap updownImage = ((System.Drawing.Bitmap)(resources.GetObject("TabIcons.bmp")));
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if (updownImage != null)
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{
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updownImage.MakeTransparent(Color.White);
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leftRightImages.Images.AddStrip(updownImage);
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}
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Refresh();
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}
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protected override void OnSizeChanged(EventArgs e)
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{
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FindUpDown();
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UpdateUpDown();
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base.OnSizeChanged(e);
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}
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/// <summary>
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/// Clean up any resources being used.
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/// </summary>
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protected override void Dispose( bool disposing )
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{
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if( disposing )
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{
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if(components != null)
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{
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components.Dispose();
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}
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leftRightImages.Dispose();
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}
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base.Dispose( disposing );
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}
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protected override void OnPaint(PaintEventArgs e)
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{
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base.OnPaint(e);
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DrawControl(e.Graphics);
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}
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internal void DrawControl(Graphics g)
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{
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if (!Visible)
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return;
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Rectangle TabControlArea = this.ClientRectangle;
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Rectangle TabArea = this.DisplayRectangle;
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//----------------------------
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// fill client area
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Brush br = new SolidBrush(mBackColor); //(SystemColors.Control); UPDATED
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g.FillRectangle(br, TabControlArea);
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br.Dispose();
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//----------------------------
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//----------------------------
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// draw border
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int nDelta = SystemInformation.Border3DSize.Width;
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Pen border = new Pen(mShadowColor);
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TabArea.Inflate(nDelta, nDelta);
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g.DrawRectangle(border, TabArea);
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border.Dispose();
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//----------------------------
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//----------------------------
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// clip region for drawing tabs
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Region rsaved = g.Clip;
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Rectangle rreg;
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int nWidth = TabArea.Width + nMargin;
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if (bUpDown)
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{
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// exclude updown control for painting
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if (Win32.IsWindowVisible(scUpDown.Handle))
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{
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Rectangle rupdown = new Rectangle();
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Win32.GetWindowRect(scUpDown.Handle, ref rupdown);
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Rectangle rupdown2 = this.RectangleToClient(rupdown);
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nWidth = rupdown2.X;
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}
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}
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rreg = new Rectangle(TabArea.Left, TabControlArea.Top, nWidth - nMargin, TabControlArea.Height);
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g.SetClip(rreg);
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// draw tabs
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for (int i = 0; i < this.TabCount; i++)
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DrawTab(g, this.TabPages[i], i);
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g.Clip = rsaved;
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//----------------------------
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//----------------------------
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// draw background to cover flat border areas
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if (this.SelectedTab != null)
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{
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TabPage tabPage = this.SelectedTab;
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tabPage.BackColor = Toolbox.Library.Forms.FormThemes.BaseTheme.TabPageActive;
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Color color = tabPage.BackColor;
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border = new Pen(color);
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TabArea.Offset(1, 1);
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TabArea.Width -= 2;
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TabArea.Height -= 2;
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g.DrawRectangle(border, TabArea);
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TabArea.Width -= 1;
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TabArea.Height -= 1;
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g.DrawRectangle(border, TabArea);
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border.Dispose();
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}
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//----------------------------
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}
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private const int WM_SETREDRAW = 11;
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[DllImport("user32.dll")]
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public static extern int SendMessage(IntPtr hWnd, Int32 wMsg, bool wParam, Int32 lParam);
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private void UpdateTabColor()
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{
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foreach (TabPage tpCheck in TabPages)
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{
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tpCheck.BackColor = Toolbox.Library.Forms.FormThemes.BaseTheme.TabPageInactive;
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tpCheck.ForeColor = Toolbox.Library.Forms.FormThemes.BaseTheme.DisabledItemColor;
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}
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if (SelectedTab != null)
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{
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SelectedTab.BackColor = Toolbox.Library.Forms.FormThemes.BaseTheme.TabPageActive;
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SelectedTab.ForeColor = Toolbox.Library.Forms.FormThemes.BaseTheme.TextForeColor;
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}
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this.Refresh();
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}
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internal void DrawTab(Graphics g, TabPage tabPage, int nIndex)
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{
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Rectangle recBounds = this.GetTabRect(nIndex);
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RectangleF tabTextArea = (RectangleF)this.GetTabRect(nIndex);
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bool bSelected = (this.SelectedIndex == nIndex);
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Point[] pt = new Point[7];
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if (this.Alignment == TabAlignment.Top)
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{
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pt[0] = new Point(recBounds.Left, recBounds.Bottom);
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pt[1] = new Point(recBounds.Left, recBounds.Top + 3);
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pt[2] = new Point(recBounds.Left + 3, recBounds.Top);
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pt[3] = new Point(recBounds.Right - 3, recBounds.Top);
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pt[4] = new Point(recBounds.Right, recBounds.Top + 3);
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pt[5] = new Point(recBounds.Right, recBounds.Bottom);
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pt[6] = new Point(recBounds.Left, recBounds.Bottom);
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}
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else
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{
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pt[0] = new Point(recBounds.Left, recBounds.Top);
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pt[1] = new Point(recBounds.Right, recBounds.Top);
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pt[2] = new Point(recBounds.Right, recBounds.Bottom - 3);
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pt[3] = new Point(recBounds.Right - 3, recBounds.Bottom);
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pt[4] = new Point(recBounds.Left + 3, recBounds.Bottom);
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pt[5] = new Point(recBounds.Left, recBounds.Bottom - 3);
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pt[6] = new Point(recBounds.Left, recBounds.Top);
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}
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//----------------------------
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// fill this tab with background color
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Brush br = new SolidBrush(tabPage.BackColor);
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g.FillPolygon(br, pt);
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br.Dispose();
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//----------------------------
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//----------------------------
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// draw border
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//g.DrawRectangle(SystemPens.ControlDark, recBounds);
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g.DrawPolygon(new Pen(Color.FromArgb(30,30,30)), pt);
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if (bSelected)
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{
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//----------------------------
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// clear bottom lines
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Pen pen = new Pen(tabPage.BackColor);
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switch (this.Alignment)
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{
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case TabAlignment.Top:
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g.DrawLine(pen, recBounds.Left + 1, recBounds.Bottom, recBounds.Right - 1, recBounds.Bottom);
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g.DrawLine(pen, recBounds.Left + 1, recBounds.Bottom+1, recBounds.Right - 1, recBounds.Bottom+1);
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break;
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case TabAlignment.Bottom:
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g.DrawLine(pen, recBounds.Left + 1, recBounds.Top, recBounds.Right - 1, recBounds.Top);
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g.DrawLine(pen, recBounds.Left + 1, recBounds.Top-1, recBounds.Right - 1, recBounds.Top-1);
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g.DrawLine(pen, recBounds.Left + 1, recBounds.Top-2, recBounds.Right - 1, recBounds.Top-2);
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break;
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}
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pen.Dispose();
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//----------------------------
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}
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//----------------------------
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//----------------------------
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// draw tab's icon
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if ((tabPage.ImageIndex >= 0) && (ImageList != null) && (ImageList.Images[tabPage.ImageIndex] != null))
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{
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int nLeftMargin = 8;
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int nRightMargin = 2;
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Image img = ImageList.Images[tabPage.ImageIndex];
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Rectangle rimage = new Rectangle(recBounds.X + nLeftMargin, recBounds.Y + 1, img.Width, img.Height);
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// adjust rectangles
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float nAdj = (float)(nLeftMargin + img.Width + nRightMargin);
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rimage.Y += (recBounds.Height - img.Height) / 2;
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tabTextArea.X += nAdj;
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tabTextArea.Width -= nAdj;
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// draw icon
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g.DrawImage(img, rimage);
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}
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//----------------------------
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//----------------------------
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// draw string
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StringFormat stringFormat = new StringFormat();
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stringFormat.Alignment = StringAlignment.Center;
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stringFormat.LineAlignment = StringAlignment.Center;
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br = new SolidBrush(tabPage.ForeColor);
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g.DrawString(tabPage.Text, Font, br, tabTextArea, stringFormat);
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//----------------------------
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}
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internal void DrawIcons(Graphics g)
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{
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if ((leftRightImages == null) || (leftRightImages.Images.Count != 4))
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return;
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//----------------------------
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// calc positions
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Rectangle TabControlArea = this.ClientRectangle;
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Rectangle r0 = new Rectangle();
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Win32.GetClientRect(scUpDown.Handle, ref r0);
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Brush br = new SolidBrush(mBackColor);
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g.FillRectangle(br, r0);
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br.Dispose();
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Pen border = new Pen(mShadowColor);
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Rectangle rborder = r0;
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rborder.Inflate(-1, -1);
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g.DrawRectangle(border, rborder);
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border.Dispose();
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int nMiddle = (r0.Width / 2);
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int nTop = (r0.Height - 16) / 2;
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int nLeft = (nMiddle - 16) / 2;
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Rectangle r1 = new Rectangle(nLeft, nTop, 16, 16);
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Rectangle r2 = new Rectangle(nMiddle+nLeft, nTop, 16, 16);
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//----------------------------
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//----------------------------
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// draw buttons
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Image img = leftRightImages.Images[1];
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if (img != null)
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{
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if (this.TabCount > 0)
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{
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Rectangle r3 = this.GetTabRect(0);
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if (r3.Left < TabControlArea.Left)
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g.DrawImage(img, r1);
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else
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{
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img = leftRightImages.Images[3];
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if (img != null)
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g.DrawImage(img, r1);
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}
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}
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}
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img = leftRightImages.Images[0];
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if (img != null)
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{
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if (this.TabCount > 0)
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{
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Rectangle r3 = this.GetTabRect(this.TabCount - 1);
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if (r3.Right > (TabControlArea.Width - r0.Width))
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g.DrawImage(img, r2);
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else
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{
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img = leftRightImages.Images[2];
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if (img != null)
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g.DrawImage(img, r2);
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}
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}
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}
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//----------------------------
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}
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protected override void OnCreateControl()
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{
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base.OnCreateControl();
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FindUpDown();
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}
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private void FlatTabControl_ControlAdded(object sender, ControlEventArgs e)
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{
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FindUpDown();
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UpdateUpDown();
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UpdateTabColor();
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}
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private void FlatTabControl_ControlRemoved(object sender, ControlEventArgs e)
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{
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FindUpDown();
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UpdateUpDown();
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}
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private void FlatTabControl_SelectedIndexChanged(object sender, EventArgs e)
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{
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UpdateUpDown();
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Invalidate(); // we need to update border and background colors
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}
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private void FindUpDown()
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{
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bool bFound = false;
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// find the UpDown control
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IntPtr pWnd = Win32.GetWindow(this.Handle, Win32.GW_CHILD);
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while (pWnd != IntPtr.Zero)
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{
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//----------------------------
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// Get the window class name
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char[] className = new char[33];
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int length = Win32.GetClassName(pWnd, className, 32);
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string s = new string(className, 0, length);
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//----------------------------
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if (s == "msctls_updown32")
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{
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bFound = true;
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if (!bUpDown)
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{
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//----------------------------
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// Subclass it
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this.scUpDown = new SubClass(pWnd, true);
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this.scUpDown.SubClassedWndProc += new SubClass.SubClassWndProcEventHandler(scUpDown_SubClassedWndProc);
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//----------------------------
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bUpDown = true;
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}
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break;
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}
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pWnd = Win32.GetWindow(pWnd, Win32.GW_HWNDNEXT);
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}
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if ((!bFound) && (bUpDown))
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bUpDown = false;
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}
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private void UpdateUpDown()
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{
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if (bUpDown)
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{
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if (Win32.IsWindowVisible(scUpDown.Handle))
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{
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Rectangle rect = new Rectangle();
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Win32.GetClientRect(scUpDown.Handle, ref rect);
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Win32.InvalidateRect(scUpDown.Handle, ref rect, true);
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}
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}
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}
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#region scUpDown_SubClassedWndProc Event Handler
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private int scUpDown_SubClassedWndProc(ref Message m)
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{
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switch (m.Msg)
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{
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case Win32.WM_PAINT:
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{
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//------------------------
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// redraw
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IntPtr hDC = Win32.GetWindowDC(scUpDown.Handle);
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Graphics g = Graphics.FromHdc(hDC);
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DrawIcons(g);
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g.Dispose();
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Win32.ReleaseDC(scUpDown.Handle, hDC);
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//------------------------
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// return 0 (processed)
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m.Result = IntPtr.Zero;
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//------------------------
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// validate current rect
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Rectangle rect = new Rectangle();
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Win32.GetClientRect(scUpDown.Handle, ref rect);
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Win32.ValidateRect(scUpDown.Handle, ref rect);
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//------------------------
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}
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return 1;
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}
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return 0;
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}
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#endregion
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#region Component Designer generated code
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/// <summary>
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/// Required method for Designer support - do not modify
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/// the contents of this method with the code editor.
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/// </summary>
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private void InitializeComponent()
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{
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this.SuspendLayout();
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//
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// FlatTabControl
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//
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this.Selected += new System.Windows.Forms.TabControlEventHandler(this.FlatTabControl_Selected);
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this.ResumeLayout(false);
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}
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#endregion
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#region Properties
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[Editor(typeof(TabpageExCollectionEditor), typeof(UITypeEditor))]
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public new TabPageCollection TabPages
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{
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get
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{
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return base.TabPages;
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}
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}
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new public TabAlignment Alignment
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{
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get {return base.Alignment;}
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set {
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TabAlignment ta = value;
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if ((ta != TabAlignment.Top) && (ta != TabAlignment.Bottom))
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ta = TabAlignment.Top;
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base.Alignment = ta;}
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}
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[Browsable(false)]
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new public bool Multiline
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{
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get {return base.Multiline;}
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set {base.Multiline = false;}
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}
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[Browsable(true)]
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new public Color myBackColor
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{
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get {return mBackColor;}
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set {mBackColor = value; this.Invalidate();}
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}
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#endregion
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#region TabpageExCollectionEditor
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internal class TabpageExCollectionEditor : CollectionEditor
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{
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public TabpageExCollectionEditor(System.Type type): base(type)
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{
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}
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protected override Type CreateCollectionItemType()
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{
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return typeof(TabPage);
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}
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}
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#endregion
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private void FlatTabControl_Selected(object sender, TabControlEventArgs e)
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{
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foreach (TabPage tpCheck in TabPages)
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{
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tpCheck.BackColor = Toolbox.Library.Forms.FormThemes.BaseTheme.TabPageInactive;
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tpCheck.ForeColor = Toolbox.Library.Forms.FormThemes.BaseTheme.DisabledItemColor;
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}
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if (SelectedTab != null)
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{
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SelectedTab.BackColor = Toolbox.Library.Forms.FormThemes.BaseTheme.TabPageActive;
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SelectedTab.ForeColor = Toolbox.Library.Forms.FormThemes.BaseTheme.TextForeColor;
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}
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}
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}
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//#endregion
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}
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