internal DomParagraphElement CreateMergedParagrahp(bool includeSelectionOnly)
{
DomParagraphElement p = new DomParagraphElement();
p.OwnerDocument = this.OwnerDocument;
p.StyleIndex = this.StyleIndex;
DomStringElement myStr = new DomStringElement();
myStr.OwnerDocument = this.OwnerDocument;
//p.Elements.AddRaw( myStr );
foreach (DomElement element in this.Elements)
{
if (includeSelectionOnly)
{
if (this.OwnerDocument.IsSelected(element) == false)
{
continue;
}
}
if (element is DomCharElement)
{
DomCharElement c = (DomCharElement)element;
if (myStr.CanMerge(c))
{
myStr.Merge(c);
}
else
{
if (myStr.HasContent)
{
p.Elements.AddRaw(myStr);
myStr = new DomStringElement();
}
myStr.OwnerDocument = this.OwnerDocument;
myStr.Merge(c);
}
}
else
{
if (myStr.HasContent)
{
p.Elements.AddRaw(myStr);
myStr = new DomStringElement();
}
if (!(element is DomParagraphFlagElement))
{
p.Elements.AddRaw(element);
}
}
}
if (myStr.HasContent)
{
p.Elements.AddRaw(myStr);
}
if (p.Elements.EOFElement != null)
{
p.Elements.EOFElement = null;
}
return(p);
}
/// <summary>
/// 合并一个字符元素对象
/// </summary>
/// <param name="c">字符元素对象</param>
internal void Merge(DomCharElement c)
{
if (myText.Length == 0)
{
this.StyleIndex = c.StyleIndex;
}
this.OwnerDocument = c.OwnerDocument;
myText.Append(c.ToString());
this.Elements.AddRaw(c);
}
/// <summary>
/// 判断对象能否合并一个字符元素对象
/// </summary>
/// <param name="c">字符元素对象</param>
/// <returns>能否合并</returns>
internal bool CanMerge(DomCharElement c)
{
if (c != null)
{
if (myText.Length == 0)
{
return(true);
}
return(this.StyleIndex == c.StyleIndex);
}
return(false);
}
/// <summary>
/// 将对象拆分成若干个字符元素对象
/// </summary>
/// <returns>拆分所得的字符元素对象列表</returns>
internal DomElementList SplitChars()
{
DomElementList list = new DomElementList();
string txt = myText.ToString();
foreach (char c in txt)
{
DomCharElement NewChar = this.OwnerDocument.CreateChar(c, this.StyleIndex);
if (NewChar != null)
{
NewChar.StyleIndex = this.StyleIndex;
NewChar.Parent = this.Parent;
list.Add(NewChar);
}
}
return(list);
}
/// <summary>
/// 刷新状态
/// </summary>
/// <returns>操作是否成功</returns>
public bool RefreshState()
{
if (this.Count == 0)
{
return(false);
}
DocumentControler controler = null;
foreach (DomElement element in this)
{
if (element.OwnerDocument != null)
{
controler = element.OwnerDocument.DocumentControler;
break;
}
}
//XTextParagraphFlagElement pe = this.LastElement as XTextParagraphFlagElement ;
//if( pe != null )
//{
// pe.RefreshSize2( this.SafeGet( this.Count - 2 ));
//}
DomLineBreakElement lb = this.LastElement as DomLineBreakElement;
if (lb != null)
{
lb.RefreshSize2(this.SafeGet(this.Count - 2));
}
// if( this.Count == 1 )
// {
// XTextElement element = this[ 0 ];
// this.intHeight = element.Height + LineHeighFix + this.LineSpacing ;
// element.Left = this.intMargin ;
// element.Top = 0 ;
// return true ;
// }
this._ContentHeight = -1;
float contentWidth = 0;
float lineHeight = 10;
foreach (DomElement element in this)
{
contentWidth = contentWidth + this.Spacing + element.Width;
element.WidthFix = 0;
float eh = element.Height;
//if (element is XTextCharElement)
//{
// XTextCharElement chr = (XTextCharElement)element;
// eh = Math.Max(eh, chr._FontHeight);
//}
if (eh > lineHeight)
{
lineHeight = eh;
}
element.OwnerLine = this;
}//foreach
contentWidth -= this.Spacing;
this.Height = ( float )Math.Ceiling(lineHeight + LineHeighFix);
// if( EOF != null )
// EOF.Height = this.intHeight ;
bool CanFix = true;
if (this.Count == 1)
{
CanFix = false;
}
else
{
if (this.HasLineEndElement)// this.OwnerDocument.IsNewLine( this.LastElement ) || this.LastElement is XTextEOF )
{
CanFix = false;
}
else if (this.OwnerContentElement.PrivateLines.LastLine == this)
{
CanFix = false;
}
}
DocumentContentAlignment align = this.Align;
// 元素空白平均修正量
float fix = 0;
// 总空白量
float Blank = this.Width - this.PaddingLeft - contentWidth;
if (Blank < 0)
{
return(false);
}
if (CanFix)
{
// 计算由于元素分组而损失的空白区域个数
// 文档中连续的英文和数字字符之间没有修正空白,制表符和书签也拒绝修正空白
// 由于存在拒绝修正空白,导致空白分摊的元素减少,此处就修正这种空白分摊元素
// 减少而带来的影响
int GroupFix = 0;
for (int iCount = 0; iCount < this.Count; iCount++)
{
DomCharElement c = this[iCount] as DomCharElement;
if (c != null)
{
if (c.CharValue == '\t')
{
GroupFix++;
}
else if (iCount < this.Count - 1)
{
if (controler.IsEnglishLetterOrDigit(c.CharValue))
{
DomCharElement c2 = this[iCount + 1] as DomCharElement;
if (c2 != null &&
controler.IsEnglishLetterOrDigit(c2.CharValue))
{
GroupFix++;
}
}
}
}
}
if (GroupFix > this.Count - 2)
{
GroupFix = 0;
}
if (this.Count > 1)
{
fix = (int)Math.Ceiling(Blank / (this.Count - 1.0 - GroupFix));
}
if (fix < 0)
{
fix = 0;
}
align = DocumentContentAlignment.Justify;
}
else
{
fix = 0;
}
float leftCount = 0;
if (align == DocumentContentAlignment.Left)
{
leftCount = this.PaddingLeft;
}
else if (align == DocumentContentAlignment.Center)
{
leftCount = this.PaddingLeft + (this.Width - this.PaddingLeft - contentWidth) / 2;
}
else if (align == DocumentContentAlignment.Right)
{
leftCount = this.PaddingLeft + (this.Width - this.PaddingLeft - contentWidth);
}
else
{
leftCount = this.PaddingLeft;
}
//foreach( XTextElement element in this )
for (int iCount = 0; iCount < this.Count; iCount++)
{
DomElement element = this[iCount];
element.Left = leftCount;
float ctf = ContentTopFix;
//if (this.AdditionHeight < 0)
//{
// ctf = ctf + this.AdditionHeight;
//}
switch (this.VerticalAlign)
{
case VerticalAlignStyle.Top:
element.Top = ContentTopFix;
break;
case VerticalAlignStyle.Middle:
element.Top = ContentTopFix + (lineHeight - element.Height) / 2.0f;
break;
case VerticalAlignStyle.Bottom:
element.Top = ctf + lineHeight - element.Height;
break;
case VerticalAlignStyle.Justify:
element.Top = ContentTopFix + (lineHeight - element.Height) / 2.0f;
break;
default:
element.Top = ctf + lineHeight - element.Height;
break;
}//switch
//bool IsTab = false ;
bool FixFlag = true;
// TAB制表符不接收修正空隙
if (element is DomCharElement)
{
DomCharElement c = ( DomCharElement )element;
if (c.CharValue == '\t')
{
FixFlag = false;
}
else if (iCount < this.Count - 1)
{
if (controler.IsEnglishLetterOrDigit(c.CharValue))
{
DomCharElement c2 = this[iCount + 1] as DomCharElement;
if (c2 != null &&
controler.IsEnglishLetterOrDigit(c2.CharValue))
{
FixFlag = false;
}
}
}
}
// // 出现拒绝修正情况,重新计算平均修正空隙
// if( CanFix && FixFlag == false )
// {
// if( iCount < this.Count - 2 )
// {
// Blank = ( this.intWidth - LeftCount - element.Width ) ;
// for( int iCount2 = iCount + 1 ; iCount2 < this.Count ; iCount2 ++ )
// {
// Blank -= this[ iCount ].Width ;
// }
// if( Blank > 0 )
// {
// fix = Blank / ( this.Count - iCount - 1.0 );
// }
// else
// fix = 0 ;
// }
// }
// else if( element is XTextNull )
// {
// // 若元素是没有实际意义的占位符合则不接收修正空隙
// FixFlag = false;
// }
if (CanFix && FixFlag)
{
if (Blank < fix)
{
fix = Blank;
}
element.WidthFix = fix + _Spacing;
Blank -= fix;
if (Blank <= 0)
{
fix = 0;
Blank = 0;
}
}
else
{
element.WidthFix = _Spacing;
}
leftCount = leftCount + element.Width + element.WidthFix;
}
//this.Height += this.LineSpacing ;
return(true);
}
/// <summary>
/// 绘制对象
/// </summary>
/// <param name="g">图形绘制对象</param>
/// <param name="ClipRectangle">剪切矩形</param>
protected virtual void DrawContent(DomCharElement chr, DocumentPaintEventArgs args)
{
DocumentContentStyle rs = chr.RuntimeStyle;
System.Drawing.RectangleF rect = chr.AbsBounds;
rect.Height = rect.Height * 1.5f;
rect.Width = rect.Width * 1.5f;
//if (chr.OwnerLine.AdditionHeight < 0)
{
rect.Height = Math.Max(
rect.Height,
chr.OwnerLine.Height + chr.OwnerLine.AdditionHeight);
}
//rect.Height = Math.Min(rect.Height, chr.OwnerLine.Height);
Color cc = rs.Color;
if (args.RenderStyle == DocumentRenderStyle.Paint)
{
HighlightInfo info = this.Document.HighlightManager[chr];
if (info != null && info.Color.A != 0)
{
// 设置高亮度文本值
cc = info.Color;
}
}
SolidBrush b = GraphicsObjectBuffer.GetSolidBrush(cc);
XFontValue font = rs.Font.Clone();
if (rs.Subscript || rs.Superscript)
{
font.Size = font.Size * 0.6f;
if (rs.Superscript)
{
args.Graphics.DrawString(chr.CharValue.ToString(),
font.Value,
b,
rect.Left,
rect.Top,
myMeasureFormat);
}
else
{
args.Graphics.DrawString(chr.CharValue.ToString(),
font.Value,
b,
rect.Left,
(int)Math.Floor(rect.Top + (rect.Height * 0.4)),
myMeasureFormat);
}
}
else
{
if ((rs.Underline || rs.Strikeout) && chr.CharValue == ' ')
{
// .NET框架存在一个BUG，不能为空格绘制下划线和删除线，因此在此进行替换绘制成不带下划线的下划线字母。
XFontValue font2 = rs.Font.Clone();
if (font2.Underline)
{
font2.Underline = false;
args.Graphics.DrawString(
"_",
font2.Value,
b,
rect.Left,
rect.Top,
myMeasureFormat);
}
else
{
font2.Strikeout = false;
args.Graphics.DrawString(
"-",
font2.Value,
b,
rect.Left,
rect.Top,
myMeasureFormat);
}
}
else
{
//InnerFormat.FormatFlags = InnerFormat.FormatFlags | StringFormatFlags.MeasureTrailingSpaces;
//InnerFormat.FormatFlags = StringFormatFlags.FitBlackBox | StringFormatFlags.MeasureTrailingSpaces ;
args.Graphics.DrawString(
chr.CharValue.ToString(),
rs.Font.Value,
b,
rect,
myMeasureFormat);
}
}
//if ( font.Underline )
//{
// float fh = font.GetHeight(args.Graphics);
// Pen p = SolidBrushBuffer.GetPen(cc);
// args.Graphics.DrawLine(
// p,
// rect.Left ,
// rect.Top + fh ,
// rect.Right + chr.WidthFix,
// rect.Top + fh );
//}
}
/// <summary>
/// 重新计算对象大小
/// </summary>
/// <param name="g">图形绘制对象</param>
protected virtual void RefreshSize(DomCharElement chr, System.Drawing.Graphics g)
{
DocumentViewOptions opt = this.Document.Options.ViewOptions;
if (myMeasureFormat == null)
{
myMeasureFormat = new System.Drawing.StringFormat(
System.Drawing.StringFormat.GenericTypographic);
myMeasureFormat.FormatFlags = System.Drawing.StringFormatFlags.FitBlackBox
| System.Drawing.StringFormatFlags.MeasureTrailingSpaces
| StringFormatFlags.NoClip;
}
DomDocument document = chr.OwnerDocument;
if (_EnableCharSizeBuffer)
{
if (chr.CharValue != '\t')
{
if (charSizes != null)
{
if (charSizes.ContainsKey(chr.StyleIndex))
{
Dictionary <char, SizeF> sizes = charSizes[chr.StyleIndex];
if (sizes.ContainsKey(chr.CharValue))
{
// 从缓存区中获得字母大小
SizeF bsize = sizes[chr.CharValue];
chr.Width = bsize.Width;
chr.Height = bsize.Height;
chr._FontHeight = chr.RuntimeStyle.Font.GetHeight(g);
return;
}
}
}
} //if
} //if
DocumentContentStyle rs = chr.RuntimeStyle;
System.Drawing.SizeF size = System.Drawing.SizeF.Empty;
g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.SingleBitPerPixel;
//this.UseGDIFontSize = true;
if (opt.RichTextBoxCompatibility)
{
// 使用GDI模式计算字符大小
string key = rs.FontName + "|" + rs.FontSize + "|" + rs.FontStyle;
GDIFont font = null;
if (gdiFonts.ContainsKey(key))
{
font = gdiFonts[key];
}
else
{
font = new GDIFont(
rs.FontName,
//(int)( rs.FontSize * 1.3837 * 3 ),
(int)(GraphicsUnitConvert.Convert(
rs.FontSize,
GraphicsUnit.Point,
GraphicsUnit.Document)),
rs.Bold,
rs.Italic,
rs.Underline,
rs.Strikeout);
gdiFonts[key] = font;
}
Size[] sizes = font.MeasureCharactersSize(g, chr.CharValue.ToString());
size.Width = sizes[0].Width;
size.Height = sizes[0].Height;
if (chr.CharValue == ' ')
{
if (rs.FontName == "Times New Roman")
{
size.Width = size.Width * 1.28f;
}
}
}
else
{
if (chr.CharValue == ' ')
{
size = g.MeasureString(
" ",
rs.Font.Value,
10000,
System.Drawing.StringFormat.GenericDefault);
size.Width = size.Width * 0.57f;
}
else if (chr.CharValue == '\t')
{
}
else
{
size = g.MeasureString(
chr.CharValue.ToString(),
rs.Font.Value,
10000,
myMeasureFormat);
size.Width = size.Width;
}
}
chr.Width = size.Width;
chr.Height = size.Height + 1;
chr._FontHeight = rs.Font.GetHeight(g);
chr.Height = chr._FontHeight;// size.Height;
if (rs.Superscript)
{
chr.Height = chr.Height * 1.2f;
}
if (rs.Superscript || rs.Subscript)
{
chr.Width = chr.Width * 0.6f;
}
if (_EnableCharSizeBuffer)
{
if (charSizes != null)
{
Dictionary <char, SizeF> sizes2 = null;
if (charSizes.ContainsKey(chr.StyleIndex))
{
sizes2 = charSizes[chr.StyleIndex];
}
else
{
sizes2 = new Dictionary <char, SizeF>();
charSizes[chr.StyleIndex] = sizes2;
}
sizes2[chr.CharValue] = new SizeF(chr.Width, chr.Height);
}
}
}