HtmlRichTextBox.cs
上传用户：jsz11269
上传日期：2017-01-14
资源大小：450k
文件大小：63k
- using System;
- using System.Collections.Generic;
- using System.Text;
- using System.Runtime.InteropServices;
- using System.Drawing;
- using System.Collections;
- using System.Windows.Forms;
- namespace myWorkPad
- {
- public class HtmlRichTextBox : ExtendedRichTextBox.RichTextBoxPrintCtrl
- {
- private int updating = 0;
- private int oldEventMask = 0;
- /// <summary>
- /// Maintains performance while updating.
- /// </summary>
- /// <remarks>
- /// <para>
- /// It is recommended to call this method before doing
- /// any major updates that you do not wish the user to
- /// see. Remember to call EndUpdate when you are finished
- /// with the update. Nested calls are supported.
- /// </para>
- /// <para>
- /// Calling this method will prevent redrawing. It will
- /// also setup the event mask of the underlying richedit
- /// control so that no events are sent.
- /// </para>
- /// </remarks>
- public void BeginUpdate()
- {
- // Deal with nested calls.
- ++updating;
- if (updating > 1)
- return;
- // Prevent the control from raising any events.
- oldEventMask = SendMessage(new HandleRef(this, Handle),
- EM_SETEVENTMASK, 0, 0);
- // Prevent the control from redrawing itself.
- SendMessage(new HandleRef(this, Handle),
- WM_SETREDRAW, 0, 0);
- }
- /// <summary>
- /// Resumes drawing and event handling.
- /// </summary>
- /// <remarks>
- /// This method should be called every time a call is made
- /// made to BeginUpdate. It resets the event mask to it's
- /// original value and enables redrawing of the control.
- /// </remarks>
- public void EndUpdate()
- {
- // Deal with nested calls.
- --updating;
- if (updating > 0)
- return;
- // Allow the control to redraw itself.
- SendMessage(new HandleRef(this, Handle),
- WM_SETREDRAW, 1, 0);
- // Allow the control to raise event messages.
- SendMessage(new HandleRef(this, Handle),
- EM_SETEVENTMASK, 0, oldEventMask);
- }
- /// <summary>
- /// Returns true when the control is performing some
- /// internal updates, specially when is reading or writing
- /// HTML text
- /// </summary>
- public bool InternalUpdating
- {
- get
- {
- return (updating != 0);
- }
- }
- #region Win32 Apis
- // Constants from the Platform SDK.
- private const int EM_FORMATRANGE = 1081;
- private const int WM_USER = 0x0400;
- private const int EM_GETCHARFORMAT = WM_USER + 58;
- private const int EM_SETCHARFORMAT = WM_USER + 68;
- private const int EM_SETEVENTMASK = 1073;
- private const int EM_GETPARAFORMAT = 1085;
- private const int EM_SETPARAFORMAT = 1095;
- private const int EM_SETTYPOGRAPHYOPTIONS = 1226;
- private const int WM_SETREDRAW = 11;
- private const int TO_ADVANCEDTYPOGRAPHY = 1;
- // Defines for EM_SETCHARFORMAT/EM_GETCHARFORMAT
- private const Int32 SCF_SELECTION = 0x0001;
- private const Int32 SCF_WORD = 0x0002;
- private const Int32 SCF_ALL = 0x0004;
- public const int LF_FACESIZE = 32;
- // Defines for STRUCT_CHARFORMAT member dwMask
- public const UInt32 CFM_BOLD = 0x00000001;
- public const UInt32 CFM_ITALIC = 0x00000002;
- public const UInt32 CFM_UNDERLINE = 0x00000004;
- public const UInt32 CFM_STRIKEOUT = 0x00000008;
- public const UInt32 CFM_PROTECTED = 0x00000010;
- public const UInt32 CFM_LINK = 0x00000020;
- public const UInt32 CFM_SIZE = 0x80000000;
- public const UInt32 CFM_COLOR = 0x40000000;
- public const UInt32 CFM_FACE = 0x20000000;
- public const UInt32 CFM_OFFSET = 0x10000000;
- public const UInt32 CFM_CHARSET = 0x08000000;
- public const UInt32 CFM_SUBSCRIPT = CFE_SUBSCRIPT | CFE_SUPERSCRIPT;
- public const UInt32 CFM_SUPERSCRIPT = CFM_SUBSCRIPT;
- // Defines for STRUCT_CHARFORMAT member dwEffects
- public const UInt32 CFE_BOLD = 0x00000001;
- public const UInt32 CFE_ITALIC = 0x00000002;
- public const UInt32 CFE_UNDERLINE = 0x00000004;
- public const UInt32 CFE_STRIKEOUT = 0x00000008;
- public const UInt32 CFE_PROTECTED = 0x00000010;
- public const UInt32 CFE_LINK = 0x00000020;
- public const UInt32 CFE_AUTOCOLOR = 0x40000000;
- public const UInt32 CFE_SUBSCRIPT = 0x00010000; /* Superscript and subscript are */
- public const UInt32 CFE_SUPERSCRIPT = 0x00020000; /* mutually exclusive */
- public const byte CFU_UNDERLINENONE = 0x00;
- public const byte CFU_UNDERLINE = 0x01;
- public const byte CFU_UNDERLINEWORD = 0x02; /* (*) displayed as ordinary underline */
- public const byte CFU_UNDERLINEDOUBLE = 0x03; /* (*) displayed as ordinary underline */
- public const byte CFU_UNDERLINEDOTTED = 0x04;
- public const byte CFU_UNDERLINEDASH = 0x05;
- public const byte CFU_UNDERLINEDASHDOT = 0x06;
- public const byte CFU_UNDERLINEDASHDOTDOT = 0x07;
- public const byte CFU_UNDERLINEWAVE = 0x08;
- public const byte CFU_UNDERLINETHICK = 0x09;
- public const byte CFU_UNDERLINEHAIRLINE = 0x0A; /* (*) displayed as ordinary underline */
- public const int CFM_SMALLCAPS = 0x0040; /* (*) */
- public const int CFM_ALLCAPS = 0x0080; /* Displayed by 3.0 */
- public const int CFM_HIDDEN = 0x0100; /* Hidden by 3.0 */
- public const int CFM_OUTLINE = 0x0200; /* (*) */
- public const int CFM_SHADOW = 0x0400; /* (*) */
- public const int CFM_EMBOSS = 0x0800; /* (*) */
- public const int CFM_IMPRINT = 0x1000; /* (*) */
- public const int CFM_DISABLED = 0x2000;
- public const int CFM_REVISED = 0x4000;
- public const int CFM_BACKCOLOR = 0x04000000;
- public const int CFM_LCID = 0x02000000;
- public const int CFM_UNDERLINETYPE = 0x00800000; /* Many displayed by 3.0 */
- public const int CFM_WEIGHT = 0x00400000;
- public const int CFM_SPACING = 0x00200000; /* Displayed by 3.0 */
- public const int CFM_KERNING = 0x00100000; /* (*) */
- public const int CFM_STYLE = 0x00080000; /* (*) */
- public const int CFM_ANIMATION = 0x00040000; /* (*) */
- public const int CFM_REVAUTHOR = 0x00008000;
- // Font Weights
- public const short FW_DONTCARE = 0;
- public const short FW_THIN = 100;
- public const short FW_EXTRALIGHT = 200;
- public const short FW_LIGHT = 300;
- public const short FW_NORMAL = 400;
- public const short FW_MEDIUM = 500;
- public const short FW_SEMIBOLD = 600;
- public const short FW_BOLD = 700;
- public const short FW_EXTRABOLD = 800;
- public const short FW_HEAVY = 900;
- public const short FW_ULTRALIGHT = FW_EXTRALIGHT;
- public const short FW_REGULAR = FW_NORMAL;
- public const short FW_DEMIBOLD = FW_SEMIBOLD;
- public const short FW_ULTRABOLD = FW_EXTRABOLD;
- public const short FW_BLACK = FW_HEAVY;
- // PARAFORMAT mask values
- public const UInt32 PFM_STARTINDENT = 0x00000001;
- public const UInt32 PFM_RIGHTINDENT = 0x00000002;
- public const UInt32 PFM_OFFSET = 0x00000004;
- public const UInt32 PFM_ALIGNMENT = 0x00000008;
- public const UInt32 PFM_TABSTOPS = 0x00000010;
- public const UInt32 PFM_NUMBERING = 0x00000020;
- public const UInt32 PFM_OFFSETINDENT = 0x80000000;
- // PARAFORMAT numbering options
- public const UInt16 PFN_BULLET = 0x0001;
- // PARAFORMAT alignment options
- public const UInt16 PFA_LEFT = 0x0001;
- public const UInt16 PFA_RIGHT = 0x0002;
- public const UInt16 PFA_CENTER = 0x0003;
- // It makes no difference if we use PARAFORMAT or
- // PARAFORMAT2 here, so I have opted for PARAFORMAT2.
- [StructLayout(LayoutKind.Sequential)]
- public struct PARAFORMAT
- {
- public int cbSize;
- public uint dwMask;
- public short wNumbering;
- public short wReserved;
- public int dxStartIndent;
- public int dxRightIndent;
- public int dxOffset;
- public short wAlignment;
- public short cTabCount;
- [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
- public int[] rgxTabs;
- // PARAFORMAT2 from here onwards.
- public int dySpaceBefore;
- public int dySpaceAfter;
- public int dyLineSpacing;
- public short sStyle;
- public byte bLineSpacingRule;
- public byte bOutlineLevel;
- public short wShadingWeight;
- public short wShadingStyle;
- public short wNumberingStart;
- public short wNumberingStyle;
- public short wNumberingTab;
- public short wBorderSpace;
- public short wBorderWidth;
- public short wBorders;
- }
- [StructLayout(LayoutKind.Sequential)]
- public struct CHARFORMAT
- {
- public int cbSize;
- public UInt32 dwMask;
- public UInt32 dwEffects;
- public Int32 yHeight;
- public Int32 yOffset;
- public Int32 crTextColor;
- public byte bCharSet;
- public byte bPitchAndFamily;
- [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
- public char[] szFaceName;
- // CHARFORMAT2 from here onwards.
- public short wWeight;
- public short sSpacing;
- public Int32 crBackColor;
- public uint lcid;
- public uint dwReserved;
- public short sStyle;
- public short wKerning;
- public byte bUnderlineType;
- public byte bAnimation;
- public byte bRevAuthor;
- public byte bReserved1;
- }
- [DllImport("user32", CharSet = CharSet.Auto)]
- private static extern int SendMessage(HandleRef hWnd,
- int msg,
- int wParam,
- int lParam);
- [DllImport("user32", CharSet = CharSet.Auto)]
- private static extern int SendMessage(HandleRef hWnd,
- int msg,
- int wParam,
- ref PARAFORMAT lp);
- [DllImport("user32", CharSet = CharSet.Auto)]
- private static extern int SendMessage(HandleRef hWnd,
- int msg,
- int wParam,
- ref CHARFORMAT lp);
- #endregion
- //----------------------------
- // New, version 1.1
- public void SetSuperScript(bool bSet)
- {
- CHARFORMAT cf = this.CharFormat;
- if (bSet)
- {
- cf.dwMask |= CFM_SUPERSCRIPT;
- cf.dwEffects |= CFE_SUPERSCRIPT;
- }
- else
- {
- cf.dwEffects &= ~CFE_SUPERSCRIPT;
- }
- this.CharFormat = cf;
- }
- public void SetSubScript(bool bSet)
- {
- CHARFORMAT cf = this.CharFormat;
- if (bSet)
- {
- cf.dwMask |= CFM_SUBSCRIPT;
- cf.dwEffects |= CFE_SUBSCRIPT;
- }
- else
- {
- cf.dwEffects &= ~CFE_SUBSCRIPT;
- }
- this.CharFormat = cf;
- }
- public bool IsSuperScript()
- {
- CHARFORMAT cf = this.CharFormat;
- return ((cf.dwEffects & CFE_SUPERSCRIPT) == CFE_SUPERSCRIPT);
- }
- public bool IsSubScript()
- {
- CHARFORMAT cf = this.CharFormat;
- return ((cf.dwEffects & CFE_SUBSCRIPT) == CFE_SUBSCRIPT);
- }
- //----------------------------
- public PARAFORMAT ParaFormat
- {
- get
- {
- PARAFORMAT pf = new PARAFORMAT();
- pf.cbSize = Marshal.SizeOf(pf);
- // Get the alignment.
- SendMessage(new HandleRef(this, Handle),
- EM_GETPARAFORMAT,
- SCF_SELECTION, ref pf);
- return pf;
- }
- set
- {
- PARAFORMAT pf = value;
- pf.cbSize = Marshal.SizeOf(pf);
- // Set the alignment.
- SendMessage(new HandleRef(this, Handle),
- EM_SETPARAFORMAT,
- SCF_SELECTION, ref pf);
- }
- }
- public PARAFORMAT DefaultParaFormat
- {
- get
- {
- PARAFORMAT pf = new PARAFORMAT();
- pf.cbSize = Marshal.SizeOf(pf);
- // Get the alignment.
- SendMessage(new HandleRef(this, Handle),
- EM_GETPARAFORMAT,
- SCF_ALL, ref pf);
- return pf;
- }
- set
- {
- PARAFORMAT pf = value;
- pf.cbSize = Marshal.SizeOf(pf);
- // Set the alignment.
- SendMessage(new HandleRef(this, Handle),
- EM_SETPARAFORMAT,
- SCF_ALL, ref pf);
- }
- }
- public CHARFORMAT CharFormat
- {
- get
- {
- CHARFORMAT cf = new CHARFORMAT();
- cf.cbSize = Marshal.SizeOf(cf);
- // Get the alignment.
- SendMessage(new HandleRef(this, Handle),
- EM_GETCHARFORMAT,
- SCF_SELECTION, ref cf);
- return cf;
- }
- set
- {
- CHARFORMAT cf = value;
- cf.cbSize = Marshal.SizeOf(cf);
- // Set the alignment.
- SendMessage(new HandleRef(this, Handle),
- EM_SETCHARFORMAT,
- SCF_SELECTION, ref cf);
- }
- }
- public CHARFORMAT DefaultCharFormat
- {
- get
- {
- CHARFORMAT cf = new CHARFORMAT();
- cf.cbSize = Marshal.SizeOf(cf);
- // Get the alignment.
- SendMessage(new HandleRef(this, Handle),
- EM_GETCHARFORMAT,
- SCF_ALL, ref cf);
- return cf;
- }
- set
- {
- CHARFORMAT cf = value;
- cf.cbSize = Marshal.SizeOf(cf);
- // Set the alignment.
- SendMessage(new HandleRef(this, Handle),
- EM_SETCHARFORMAT,
- SCF_ALL, ref cf);
- }
- }
- #region COLORREF helper functions
- // convert COLORREF to Color
- private Color GetColor(int crColor)
- {
- byte r = (byte)(crColor);
- byte g = (byte)(crColor >> 8);
- byte b = (byte)(crColor >> 16);
- return Color.FromArgb(r, g, b);
- }
- // convert COLORREF to Color
- private int GetCOLORREF(int r, int g, int b)
- {
- int r2 = r;
- int g2 = (g << 8);
- int b2 = (b << 16);
- int result = r2 | g2 | b2;
- return result;
- }
- private int GetCOLORREF(Color color)
- {
- int r = color.R;
- int g = color.G;
- int b = color.B;
- return GetCOLORREF(r, g, b);
- }
- #endregion
- #region "Get HTML text"
- // format states
- private enum ctformatStates
- {
- nctNone = 0, // none format applied
- nctNew = 1, // new format
- nctContinue = 2, // continue with previous format
- nctReset = 3 // reset format (close this tag)
- }
- private enum uMyREType
- {
- U_MYRE_TYPE_TAG,
- U_MYRE_TYPE_EMO,
- U_MYRE_TYPE_ENTITY,
- }
- private struct cMyREFormat
- {
- public uMyREType nType;
- public int nLen;
- public int nPos;
- public string strValue;
- }
- public string GetHTML(bool bHTML, bool bParaFormat)
- {
- //------------------------
- // working variables
- CHARFORMAT cf;
- PARAFORMAT pf;
- ctformatStates bold = ctformatStates.nctNone;
- ctformatStates bitalic = ctformatStates.nctNone;
- ctformatStates bstrikeout = ctformatStates.nctNone;
- ctformatStates bunderline = ctformatStates.nctNone;
- ctformatStates super = ctformatStates.nctNone;
- ctformatStates sub = ctformatStates.nctNone;
- ctformatStates bacenter = ctformatStates.nctNone;
- ctformatStates baleft = ctformatStates.nctNone;
- ctformatStates baright = ctformatStates.nctNone;
- ctformatStates bnumbering = ctformatStates.nctNone;
- string strFont = "";
- Int32 crFont = 0;
- Color color = new Color();
- int yHeight = 0;
- int i = 0;
- //-------------------------
- //-------------------------
- // to store formatting
- ArrayList colFormat = new ArrayList();
- cMyREFormat mfr;
- //-------------------------
- //-------------------------
- // ok, lets go
- int nStart, nEnd;
- string strHTML = "";
- this.HideSelection = true;
- this.BeginUpdate();
- nStart = this.SelectionStart;
- nEnd = this.SelectionLength;
- try
- {
- //--------------------------------
- // replace entities
- if (bHTML)
- {
- char[] ch = { '&', '<', '>', '"', ''' };
- string[] strreplace = { "&", "<", ">", """, "'" };
- for (i = 0; i < ch.Length; i++)
- {
- char[] ch2 = { ch[i] };
- int n = this.Find(ch2, 0);
- while (n != -1)
- {
- mfr = new cMyREFormat();
- mfr.nPos = n;
- mfr.nLen = 1;
- mfr.nType = uMyREType.U_MYRE_TYPE_ENTITY;
- mfr.strValue = strreplace[i];
- colFormat.Add(mfr);
- n = this.Find(ch2, n + 1);
- }
- }
- }
- //--------------------------------
- string strT = "";
- int k = this.TextLength;
- char[] chtrim = { ' ', 'x0000' };
- //--------------------------------
- // this is an inefficient method to get text format
- // but RichTextBox doesn't provide another method to
- // get something like an array of charformat and paraformat
- //--------------------------------
- for (i = 0; i < k; i++)
- {
- // select one character
- this.Select(i, 1);
- string strChar = this.SelectedText;
- if (bHTML)
- {
- //-------------------------
- // get format for this character
- cf = this.CharFormat;
- pf = this.ParaFormat;
- string strfname = new string(cf.szFaceName);
- strfname = strfname.Trim(chtrim);
- //-------------------------
- //-------------------------
- // new font format ?
- if ((strFont != strfname) || (crFont != cf.crTextColor) || (yHeight != cf.yHeight))
- {
- if (strFont != "")
- {
- // close previous <font> tag
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "</font>";
- colFormat.Add(mfr);
- }
- //-------------------------
- // save this for cache
- strFont = strfname;
- crFont = cf.crTextColor;
- yHeight = cf.yHeight;
- //-------------------------
- //-------------------------
- // font size should be translate to
- // html size (Approximately)
- int fsize = yHeight / (20 * 5);
- //-------------------------
- //-------------------------
- // color object from COLORREF
- color = GetColor(crFont);
- //-------------------------
- //-------------------------
- // add <font> tag
- mfr = new cMyREFormat();
- string strcolor = string.Concat("#", (color.ToArgb() & 0x00FFFFFF).ToString("X6"));
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "<font face="" + strFont + "" color="" + strcolor + "" size="" + fsize + "">";
- colFormat.Add(mfr);
- //-------------------------
- }
- //-------------------------
- // are we in another line ?
- if ((strChar == "r") || (strChar == "n"))
- {
- // yes?
- // then, we need to reset paragraph format
- // and character format
- if (bParaFormat)
- {
- bnumbering = ctformatStates.nctNone;
- baleft = ctformatStates.nctNone;
- baright = ctformatStates.nctNone;
- bacenter = ctformatStates.nctNone;
- }
- // close previous tags
- // is italic? => close it
- if (bitalic != ctformatStates.nctNone)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "</i>";
- colFormat.Add(mfr);
- bitalic = ctformatStates.nctNone;
- }
- // is bold? => close it
- if (bold != ctformatStates.nctNone)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "</b>";
- colFormat.Add(mfr);
- bold = ctformatStates.nctNone;
- }
- // is underline? => close it
- if (bunderline != ctformatStates.nctNone)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "</u>";
- colFormat.Add(mfr);
- bunderline = ctformatStates.nctNone;
- }
- // is strikeout? => close it
- if (bstrikeout != ctformatStates.nctNone)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "</s>";
- colFormat.Add(mfr);
- bstrikeout = ctformatStates.nctNone;
- }
- // is super? => close it
- if (super != ctformatStates.nctNone)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "</sup>";
- colFormat.Add(mfr);
- super = ctformatStates.nctNone;
- }
- // is sub? => close it
- if (sub != ctformatStates.nctNone)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "</sub>";
- colFormat.Add(mfr);
- sub = ctformatStates.nctNone;
- }
- }
- // now, process the paragraph format,
- // managing states: none, new, continue {with previous}, reset
- if (bParaFormat)
- {
- // align to center?
- if (pf.wAlignment == PFA_CENTER)
- {
- if (bacenter == ctformatStates.nctNone)
- bacenter = ctformatStates.nctNew;
- else
- bacenter = ctformatStates.nctContinue;
- }
- else
- {
- if (bacenter != ctformatStates.nctNone)
- bacenter = ctformatStates.nctReset;
- }
- if (bacenter == ctformatStates.nctNew)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "<p align="center">";
- colFormat.Add(mfr);
- }
- else if (bacenter == ctformatStates.nctReset)
- bacenter = ctformatStates.nctNone;
- //---------------------
- //---------------------
- // align to left ?
- if (pf.wAlignment == PFA_LEFT)
- {
- if (baleft == ctformatStates.nctNone)
- baleft = ctformatStates.nctNew;
- else
- baleft = ctformatStates.nctContinue;
- }
- else
- {
- if (baleft != ctformatStates.nctNone)
- baleft = ctformatStates.nctReset;
- }
- if (baleft == ctformatStates.nctNew)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "<p align="left">";
- colFormat.Add(mfr);
- }
- else if (baleft == ctformatStates.nctReset)
- baleft = ctformatStates.nctNone;
- //---------------------
- //---------------------
- // align to right ?
- if (pf.wAlignment == PFA_RIGHT)
- {
- if (baright == ctformatStates.nctNone)
- baright = ctformatStates.nctNew;
- else
- baright = ctformatStates.nctContinue;
- }
- else
- {
- if (baright != ctformatStates.nctNone)
- baright = ctformatStates.nctReset;
- }
- if (baright == ctformatStates.nctNew)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "<p align="right">";
- colFormat.Add(mfr);
- }
- else if (baright == ctformatStates.nctReset)
- baright = ctformatStates.nctNone;
- //---------------------
- //---------------------
- // bullet ?
- if (pf.wNumbering == PFN_BULLET)
- {
- if (bnumbering == ctformatStates.nctNone)
- bnumbering = ctformatStates.nctNew;
- else
- bnumbering = ctformatStates.nctContinue;
- }
- else
- {
- if (bnumbering != ctformatStates.nctNone)
- bnumbering = ctformatStates.nctReset;
- }
- if (bnumbering == ctformatStates.nctNew)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "<li>";
- colFormat.Add(mfr);
- }
- else if (bnumbering == ctformatStates.nctReset)
- bnumbering = ctformatStates.nctNone;
- //---------------------
- }
- //---------------------
- // bold ?
- if ((cf.dwEffects & CFE_BOLD) == CFE_BOLD)
- {
- if (bold == ctformatStates.nctNone)
- bold = ctformatStates.nctNew;
- else
- bold = ctformatStates.nctContinue;
- }
- else
- {
- if (bold != ctformatStates.nctNone)
- bold = ctformatStates.nctReset;
- }
- if (bold == ctformatStates.nctNew)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "<b>";
- colFormat.Add(mfr);
- }
- else if (bold == ctformatStates.nctReset)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "</b>";
- colFormat.Add(mfr);
- bold = ctformatStates.nctNone;
- }
- //---------------------
- //---------------------
- // Italic
- if ((cf.dwEffects & CFE_ITALIC) == CFE_ITALIC)
- {
- if (bitalic == ctformatStates.nctNone)
- bitalic = ctformatStates.nctNew;
- else
- bitalic = ctformatStates.nctContinue;
- }
- else
- {
- if (bitalic != ctformatStates.nctNone)
- bitalic = ctformatStates.nctReset;
- }
- if (bitalic == ctformatStates.nctNew)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "<i>";
- colFormat.Add(mfr);
- }
- else if (bitalic == ctformatStates.nctReset)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "</i>";
- colFormat.Add(mfr);
- bitalic = ctformatStates.nctNone;
- }
- //---------------------
- //---------------------
- // strikeout
- if ((cf.dwEffects & CFM_STRIKEOUT) == CFM_STRIKEOUT)
- {
- if (bstrikeout == ctformatStates.nctNone)
- bstrikeout = ctformatStates.nctNew;
- else
- bstrikeout = ctformatStates.nctContinue;
- }
- else
- {
- if (bstrikeout != ctformatStates.nctNone)
- bstrikeout = ctformatStates.nctReset;
- }
- if (bstrikeout == ctformatStates.nctNew)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "<s>";
- colFormat.Add(mfr);
- }
- else if (bstrikeout == ctformatStates.nctReset)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "</s>";
- colFormat.Add(mfr);
- bstrikeout = ctformatStates.nctNone;
- }
- //---------------------
- //---------------------
- // underline ?
- if ((cf.dwEffects & CFE_UNDERLINE) == CFE_UNDERLINE)
- {
- if (bunderline == ctformatStates.nctNone)
- bunderline = ctformatStates.nctNew;
- else
- bunderline = ctformatStates.nctContinue;
- }
- else
- {
- if (bunderline != ctformatStates.nctNone)
- bunderline = ctformatStates.nctReset;
- }
- if (bunderline == ctformatStates.nctNew)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "<u>";
- colFormat.Add(mfr);
- }
- else if (bunderline == ctformatStates.nctReset)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "</u>";
- colFormat.Add(mfr);
- bunderline = ctformatStates.nctNone;
- }
- //---------------------
- //---------------------
- // superscript ?
- if ((cf.dwEffects & CFE_SUPERSCRIPT) == CFE_SUPERSCRIPT)
- {
- if (super == ctformatStates.nctNone)
- super = ctformatStates.nctNew;
- else
- super = ctformatStates.nctContinue;
- }
- else
- {
- if (super != ctformatStates.nctNone)
- super = ctformatStates.nctReset;
- }
- if (super == ctformatStates.nctNew)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "<sup>";
- colFormat.Add(mfr);
- }
- else if (super == ctformatStates.nctReset)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "</sup>";
- colFormat.Add(mfr);
- super = ctformatStates.nctNone;
- }
- //---------------------
- //---------------------
- // subscript ?
- if ((cf.dwEffects & CFE_SUBSCRIPT) == CFE_SUBSCRIPT)
- {
- if (sub == ctformatStates.nctNone)
- sub = ctformatStates.nctNew;
- else
- sub = ctformatStates.nctContinue;
- }
- else
- {
- if (sub != ctformatStates.nctNone)
- sub = ctformatStates.nctReset;
- }
- if (sub == ctformatStates.nctNew)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "<sub>";
- colFormat.Add(mfr);
- }
- else if (sub == ctformatStates.nctReset)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "</sub>";
- colFormat.Add(mfr);
- sub = ctformatStates.nctNone;
- }
- //---------------------
- }
- strT += strChar;
- }
- if (bHTML)
- {
- // close pending tags
- if (bold != ctformatStates.nctNone)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "</b>";
- colFormat.Add(mfr);
- //strT += "</b>";
- }
- if (bitalic != ctformatStates.nctNone)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "</i>";
- colFormat.Add(mfr);
- //strT += "</i>";
- }
- if (bstrikeout != ctformatStates.nctNone)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "</s>";
- colFormat.Add(mfr);
- //strT += "</s>";
- }
- if (bunderline != ctformatStates.nctNone)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "</u>";
- colFormat.Add(mfr);
- //strT += "</u>";
- }
- if (super != ctformatStates.nctNone)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "</sup>";
- colFormat.Add(mfr);
- //strT += "</sup>";
- }
- if (sub != ctformatStates.nctNone)
- {
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "</sub>";
- colFormat.Add(mfr);
- //strT += "</sub>";
- }
- if (strFont != "")
- {
- // close pending font format
- mfr = new cMyREFormat();
- mfr.nPos = i;
- mfr.nLen = 0;
- mfr.nType = uMyREType.U_MYRE_TYPE_TAG;
- mfr.strValue = "</font>";
- colFormat.Add(mfr);
- }
- }
- //--------------------------
- // now, reorder the formatting array
- k = colFormat.Count;
- for (i = 0; i < k - 1; i++)
- {
- for (int j = i + 1; j < k; j++)
- {
- mfr = (cMyREFormat)colFormat[i];
- cMyREFormat mfr2 = (cMyREFormat)colFormat[j];
- if (mfr2.nPos < mfr.nPos)
- {
- colFormat.RemoveAt(j);
- colFormat.Insert(i, mfr2);
- j--;
- }
- else if ((mfr2.nPos == mfr.nPos) && (mfr2.nLen < mfr.nLen))
- {
- colFormat.RemoveAt(j);
- colFormat.Insert(i, mfr2);
- j--;
- }
- }
- }
- //--------------------------
- //--------------------------
- // apply format by replacing and inserting HTML tags
- // stored in the Format Array
- int nAcum = 0;
- for (i = 0; i < k; i++)
- {
- mfr = (cMyREFormat)colFormat[i];
- strHTML += strT.Substring(nAcum, mfr.nPos - nAcum) + mfr.strValue;
- nAcum = mfr.nPos + mfr.nLen;
- }
- if (nAcum < strT.Length)
- strHTML += strT.Substring(nAcum);
- //--------------------------
- }
- catch
- {
- //MessageBox.Show(ex.Message);
- }
- finally
- {
- //--------------------------
- // finish, restore
- this.SelectionStart = nStart;
- this.SelectionLength = nEnd;
- this.EndUpdate();
- this.HideSelection = false;
- //--------------------------
- }
- return strHTML;
- }
- #endregion
- #region "Add HTML text"
- public void AddHTML(string strHTML)
- {
- CHARFORMAT cf;
- PARAFORMAT pf;
- cf = this.DefaultCharFormat; // to apply character formatting
- pf = this.DefaultParaFormat; // to apply paragraph formatting
- char[] chtrim = { ' ', 'x0000' };
- this.HideSelection = true;
- this.BeginUpdate();
- try
- {
- // process text
- while (strHTML.Length > 0)
- {
- string strData = strHTML;
- reinit:
- // looking for start tags
- int nStart = strHTML.IndexOf('<');
- if (nStart >= 0)
- {
- if (nStart > 0)
- {
- // tag is not the first character, so
- // we need to add text to control and continue
- // looking for tags at the begining of the text
- strData = strHTML.Substring(0, nStart);
- strHTML = strHTML.Substring(nStart);
- }
- else
- {
- // ok, get tag value
- int nEnd = strHTML.IndexOf('>', nStart);
- if (nEnd > nStart)
- {
- if ((nEnd - nStart) > 0)
- {
- string strTag = strHTML.Substring(nStart, nEnd - nStart + 1);
- strTag = strTag.ToLower();
- if (strTag == "<b>")
- {
- cf.dwMask |= CFM_WEIGHT | CFM_BOLD;
- cf.dwEffects |= CFE_BOLD;
- cf.wWeight = FW_BOLD;
- }
- else if (strTag == "<i>")
- {
- cf.dwMask |= CFM_ITALIC;
- cf.dwEffects |= CFE_ITALIC;
- }
- else if (strTag == "<u>")
- {
- cf.dwMask |= CFM_UNDERLINE | CFM_UNDERLINETYPE;
- cf.dwEffects |= CFE_UNDERLINE;
- cf.bUnderlineType = CFU_UNDERLINE;
- }
- else if (strTag == "<s>")
- {
- cf.dwMask |= CFM_STRIKEOUT;
- cf.dwEffects |= CFE_STRIKEOUT;
- }
- else if (strTag == "<sup>")
- {
- cf.dwMask |= CFM_SUPERSCRIPT;
- cf.dwEffects |= CFE_SUPERSCRIPT;
- }
- else if (strTag == "<sub>")
- {
- cf.dwMask |= CFM_SUBSCRIPT;
- cf.dwEffects |= CFE_SUBSCRIPT;
- }
- else if ((strTag.Length > 2) && (strTag.Substring(0, 2) == "<p"))
- {
- if (strTag.IndexOf("align="left"") > 0)
- {
- pf.dwMask |= PFM_ALIGNMENT;
- pf.wAlignment = (short)PFA_LEFT;
- }
- else if (strTag.IndexOf("align="right"") > 0)
- {
- pf.dwMask |= PFM_ALIGNMENT;
- pf.wAlignment = (short)PFA_RIGHT;
- }
- else if (strTag.IndexOf("align="center"") > 0)
- {
- pf.dwMask |= PFM_ALIGNMENT;
- pf.wAlignment = (short)PFA_CENTER;
- }
- }
- else if ((strTag.Length > 5) && (strTag.Substring(0, 5) == "<font"))
- {
- string strFont = new string(cf.szFaceName);
- strFont = strFont.Trim(chtrim);
- int crFont = cf.crTextColor;
- int yHeight = cf.yHeight;
- int nFace = strTag.IndexOf("face=");
- if (nFace > 0)
- {
- int nFaceEnd = strTag.IndexOf('"', nFace + 6);
- if (nFaceEnd > nFace)
- strFont = strTag.Substring(nFace + 6, nFaceEnd - nFace - 6);
- }
- int nSize = strTag.IndexOf("size=");
- if (nSize > 0)
- {
- int nSizeEnd = strTag.IndexOf('"', nSize + 6);
- if (nSizeEnd > nSize)
- {
- yHeight = int.Parse(strTag.Substring(nSize + 6, nSizeEnd - nSize - 6));
- yHeight *= (20 * 5);
- }
- }
- int nColor = strTag.IndexOf("color=");
- if (nColor > 0)
- {
- int nColorEnd = strTag.IndexOf('"', nColor + 7);
- if (nColorEnd > nColor)
- {
- if (strTag.Substring(nColor + 7, 1) == "#")
- {
- string strCr = strTag.Substring(nColor + 8, nColorEnd - nColor - 8);
- int nCr = Convert.ToInt32(strCr, 16);
- Color color = Color.FromArgb(nCr);
- crFont = GetCOLORREF(color);
- }
- else
- {
- crFont = int.Parse(strTag.Substring(nColor + 7, nColorEnd - nColor - 7));
- }
- }
- }
- cf.szFaceName = new char[LF_FACESIZE];
- strFont.CopyTo(0, cf.szFaceName, 0, Math.Min(LF_FACESIZE - 1, strFont.Length));
- //cf.szFaceName = strFont.ToCharArray(0, Math.Min(strFont.Length, LF_FACESIZE));
- cf.crTextColor = crFont;
- cf.yHeight = yHeight;
- cf.dwMask |= CFM_COLOR | CFM_SIZE | CFM_FACE;
- cf.dwEffects &= ~CFE_AUTOCOLOR;
- }
- else if (strTag == "<li>")
- {
- if (pf.wNumbering != PFN_BULLET)
- {
- pf.dwMask |= PFM_NUMBERING;
- pf.wNumbering = (short)PFN_BULLET;
- }
- }
- else if (strTag == "</b>")
- {
- cf.dwEffects &= ~CFE_BOLD;
- cf.wWeight = FW_NORMAL;
- }
- else if (strTag == "</i>")
- {
- cf.dwEffects &= ~CFE_ITALIC;
- }
- else if (strTag == "</u>")
- {
- cf.dwEffects &= ~CFE_UNDERLINE;
- }
- else if (strTag == "</s>")
- {
- cf.dwEffects &= ~CFM_STRIKEOUT;
- }
- else if (strTag == "</sup>")
- {
- cf.dwEffects &= ~CFE_SUPERSCRIPT;
- }
- else if (strTag == "</sub>")
- {
- cf.dwEffects &= ~CFE_SUBSCRIPT;
- }
- else if (strTag == "</font>")
- {
- }
- else if (strTag == "</p>")
- {
- }
- else if (strTag == "</li>")
- {
- }
- //-------------------------------
- // now, remove tag from HTML
- int nStart2 = strHTML.IndexOf("<", nEnd + 1);
- if (nStart2 > 0)
- {
- // extract partial data
- strData = strHTML.Substring(nEnd + 1, nStart2 - nEnd - 1);
- strHTML = strHTML.Substring(nStart2);
- }
- else
- {
- // get remain text and finish
- if ((nEnd + 1) < strHTML.Length)
- strData = strHTML.Substring(nEnd + 1);
- else
- strData = "";
- strHTML = "";
- }
- //-------------------------------s
- //-------------------------------
- // have we any continuos tag ?
- if (strData.Length > 0)
- {
- // yes, ok, goto to reinit
- if (strData[0] == '<')
- goto reinit;
- }
- //-------------------------------
- }
- else
- {
- // we have not found any valid tag
- strHTML = "";
- }
- }
- else
- {
- // we have not found any valid tag
- strHTML = "";
- }
- }
- }
- else
- {
- // we have not found any tag
- strHTML = "";
- }
- if (strData.Length > 0)
- {
- //-------------------------------
- // replace entities
- strData = strData.Replace("&", "&");
- strData = strData.Replace("<", "<");
- strData = strData.Replace(">", ">");
- strData = strData.Replace("'", "'");
- strData = strData.Replace(""", """);
- //-------------------------------
- string strAux = strData; // use another copy
- while (strAux.Length > 0)
- {
- //-----------------------
- int nLen = strAux.Length;
- //-----------------------
- //-------------------------------
- // now, add text to control
- int nStartCache = this.SelectionStart;
- string strt = strAux.Substring(0, nLen);
- this.SelectedText = strt;
- strAux = strAux.Remove(0, nLen);
- this.SelectionStart = nStartCache;
- this.SelectionLength = strt.Length;
- //-------------------------------
- //-------------------------------
- // apply format
- this.ParaFormat = pf;
- this.CharFormat = cf;
- //-------------------------------
- // reposition to final
- this.SelectionStart = this.TextLength + 1;
- this.SelectionLength = 0;
- }
- // reposition to final
- this.SelectionStart = this.TextLength + 1;
- this.SelectionLength = 0;
- //-------------------------------
- // new paragraph requires to reset alignment
- if ((strData.IndexOf("rn", 0) >= 0) || (strData.IndexOf("n", 0) >= 0))
- {
- pf.dwMask = PFM_ALIGNMENT | PFM_NUMBERING;
- pf.wAlignment = (short)PFA_LEFT;
- pf.wNumbering = 0;
- }
- //-------------------------------
- }
- } // while (strHTML.Length > 0)
- }
- catch (Exception ex)
- {
- MessageBox.Show(ex.Message);
- }
- finally
- {
- // reposition to final
- this.SelectionStart = this.TextLength + 1;
- this.SelectionLength = 0;
- this.EndUpdate();
- this.HideSelection = false;
- }
- }
- #endregion
- }
- }
English
