/// <summary>
/// 绘制元素
/// </summary>
/// <param name="g">图形绘制对象</param>
/// <param name="ClipRectangle">剪切矩形</param>
protected virtual void DrawContent(DomLineBreakElement element, DocumentPaintEventArgs args)
{
if (_LineBreakIcon == null)
{
_LineBreakIcon = ( Bitmap )WriterResources.linebreak.Clone();
_LineBreakIcon.MakeTransparent(System.Drawing.Color.White);
}
System.Drawing.RectangleF rect = element.AbsBounds;
if (args.RenderStyle == DocumentRenderStyle.Paint)
{
System.Drawing.Size size = _LineBreakIcon.Size;
size = this.Document.PixelToDocumentUnit(size);
args.Graphics.DrawImage(_LineBreakIcon, rect.Left, rect.Bottom - size.Height);
//WriterUtils.DrawParagraphFlag( g , rect );
}
}
/// <summary>
/// 刷新元素大小
/// </summary>
/// <param name="g">参数</param>
protected virtual void RefreshSize(DomLineBreakElement element, System.Drawing.Graphics g)
{
float h = this.Document.DefaultStyle.DefaultLineHeight;
// XTextElement e = myOwnerDocument.Content.GetPreElement( this );
// if( e != null && e.Height > 0 && e.OwnerLine == this.OwnerLine )
// {
// h = e.Height ;
// }
// h = Math.Max( h , myOwnerDocument.PixelToDocumentUnit( 10 ));
element.Height = h;
element.Width = this.Document.PixelToDocumentUnit(10);
element.SizeInvalid = false;
// this.intHeight = ( int ) Math.Ceiling( myOwnerDocument.BodyFont.GetHeight( g ));// size.Height );
// this.intWidth = ( int ) ( intHeight * 0.8 );
//// System.Drawing.SizeF size = g.MeasureString( "H" , myOwnerDocument.BodyFont , 1000 , System.Drawing.StringFormat.GenericTypographic );
//// this.Width = ( int ) Math.Ceiling( size.Height );
//// this.Height = ( int ) Math.Ceiling( size.Height );
// this.bolSizeInvalid = false ;
}
/// <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);
}
