RichView TRVStyle ParaStyles

RichView TRVStyle ParaStyles
  
    One 、ParaStyles
    This is a TRVStyle One of the key attributes of : A collection of paragraph styles .   
    ParaSytle Defines paragraph attributes ,ParaSytle yes TParaInfos Set ,TParaInfo yes TCustomRVParaInfo Subclasses of , Inheritance relationships TObject → TPersistent → TCollectionItem → TCustomRVInfo

property ParaStyles : TParaInfos;

    It is a paragraph style , Used to define paragraph attributes in a document .

See ：
TParaInfos (collection of paragraph styles);
TParaInfo (item in collection of paragraph styles).

    Two 、ITEM
    stay TRVStyle in ,ParaStyles With ParaStyles[0] The form . Such as ：ParaStyles[0], Is the first text style in the collection .ParaStyles[N]  among N Value   0..n-1.

    3、 ... and 、 attribute
    Alignment                  //   Paragraph alignment ,Type TRVAlignment; 
    LastLineAlignment          //   Align the next line of paragraphs ,Type TRVLastLineAlignment;
    FirstIndent                //   Indent the first line of the paragraph , use LeftIndent Summarize ;
    LeftIndent                 //   Left edge indent ; Use TRVStyle The unit of ;     
    RightIndent                //   Indent of the right edge ;
    SpaceBefore                //   Space above paragraph ;
    SpaceAfter                 //   The space below the paragraph ;
    Border                     //   Borders around paragraphs ;      TRvBordes
    Background                 //   Paragraph background ;
    Tabs                       //   Set of tab stops ;
    LineSpacing                //   Row spacing ;   
    BiDiMode                   //   Default text orientation ;
    Options                    //   Protect , packing
    OutlineLevel               //   Allow to define the title .

    Four 、 Related properties
    1、LineSpacingType
TRvLineSpacingType(rvlsPercent,rvlsSpaceBetween,rvlsLineHeightAtLeast,rvlsLineHeightExact)
    
    2、TRVAlignment
type
  TRVAlignment = (rvaLeft, rvaRight, rvaCenter, rvaJustify, rvaDistribute);
rvaLeft       Align paragraphs to the left .
rvaRight       Align paragraphs to the right .
rvaCenter     Center paragraph .
rvaJustify     All lines of the paragraph ( Except for the last line ) By adding spaces between words ( That is, increase the width of space characters ) To align left and right .
              The last line is based on LastLineAlignment Property .
rvaDistribute All lines of the paragraph ( Except for the last line ) Align left and right by adding spaces between all characters .
              The last line is based on LastLineAlignment Property .

    3、TRVLastLineAlignment
type
  TRVLastLineAlignment =(rvllaDefault, rvllaLeft, rvllaRight, rvllaCenter, rvllaJustify);

rvllaDefault   If the paragraph is aligned from left to right , The line is aligned to the left , Otherwise, the rows are aligned to the right .
rvllaLeft       This line is aligned to the left .
rvllaRight     This line is aligned to the right .
rvllaCenter     This line is centered .
rvllaJustify   This line is based on “ alignment ” Property .

     4、Bordes

type TBorderStyle = bsNone..bsSingle;
       bsNone      Borderless r
       bsSingle    3D Or topic themed
Related settings ：  

Border.Color                        //   Color  
Border.Width                        //   wide   
Border.InternalWidth                //   Inside width  
Border.Style                        //   In frame type           
Border.VisibleBorders.Left          //   Whether to display the left box
Border.VisibleBorders.Top
Border.VisibleBorders.Right
Border.VisibleBorders.Bottom
Border.BorderOffsets.Left          //   The space between the paragraph content and the border .
Border.BorderOffsets.Top
Border.BorderOffsets.Right
Border.BorderOffsets.Bottom

    5、 ... and 、ParaStyles The default value is
    TRVStyle in ,ParaStyles The default value is （2 individual ）：
Paragraph Style   //   paragraph style
Centered          //   Central

    6、 ... and 、 Build your own ParaStyles

  RVStyle1.ParaStyles.Clear;
  with RVStyle1.ParaStyles.Add do begin
    StyleName := 'Paragraph 1';
    Alignment := rvaLeft;                  //   Paragraph alignment ( left, right, center, justify or distribute)
    LastLineAlignment:=rvaLeft;            //   Align the next line of paragraphs （ Align left , Right alignment , Align center , Align or assign );
    FirstIndent:=0;                        //   Indent the first line of the paragraph 
    LeftIndent:=0;                         //   Left edge indent ;
    RightIndent:=0;                        //   Indent of the right edge ;
    SpaceBefore:=5;                        //   Space above paragraph ;
    SpaceAfter:=5;                         //   The space below the paragraph ;
    Border:=：bsNone;                      //   no border 
  end; 
  with RVStyle1.ParaStyles.Add do begin
    StyleName := 'Paragraph 2';
    Alignment := rvaCenter;                //   Paragraph alignment ( left, right, center, justify or distribute)
    LastLineAlignment:=rvaLeft;            //   Align the next line of paragraphs （ Align left , Right alignment , Align center , Align or assign );
    FirstIndent:=0;                        //   Indent the first line of the paragraph 
    LeftIndent:=0;                         //   Left edge indent ;
    RightIndent:=0;                        //   Indent of the right edge ;
    SpaceBefore:=5;                        //   Space above paragraph ;
    SpaceAfter:=5;                         //   The space below the paragraph ;
    Border:=：bsSingle;                    //   There's a border 
    Border.VisibleBorders.Top:=True;       //   Whether the border displays 
    Border.VisibleBorders.Left:=False;
    Border.VisibleBorders.Right:=False;
    Border.VisibleBorders.Bottom:=True;
  end;