支持的 HTML 子集

Tag	描述	注释
a	锚点或链接	支持 href and name 属性。
address	Address
b	Bold
big	Larger font
blockquote	Indented paragraph
body	Document body	支持 bgcolor attribute, which can be a Qt color name 或 #RRGGBB color specification.
br	Line break
center	Centered paragraph
cite	Inline citation	如同 i .
code	Code	如同 tt .
dd	Definition data
dfn	Definition	如同 i .
div	Document division	支持标准 块属性 .
dl	Definition list	支持标准 块属性 .
dt	Definition term	支持标准 块属性 .
em	Emphasized	如同 i .
font	Font size, family, and/or color	支持下列属性： size , face ，和 color (Qt color names or #RRGGBB ).
h1	Level 1 heading	支持标准 块属性 .
h2	Level 2 heading	支持标准 块属性 .
h3	Level 3 heading	支持标准 块属性 .
h4	Level 4 heading	支持标准 块属性 .
h5	Level 5 heading	支持标准 块属性 .
h6	Level 6 heading	支持标准 块属性 .
head	文档 Header 头
hr	Horizontal line	支持 width attribute, which can be specified as an absolute or relative ( % ) value.
html	HTML 文档
i	Italic
img	图像	支持 src , source (for Qt 3 compatibility), width ，和 height 属性。
kbd	User-entered text
meta	Meta-information	If a text encoding is specified using the meta tag, it is picked up by Qt::codecForHtml(). Likewise, if an encoding is specified to QTextDocument::toHtml (), the encoding is stored using a meta tag, for example: <meta http-equiv="Content-Type" content="text/html; charset=EUC-JP" />
li	List item
nobr	Non-breakable text
ol	Ordered list	支持标准 列表属性 .
p	Paragraph	Left-aligned by default. Supports the standard 块属性 .
pre	Preformated text
qt	Qt rich-text document	同义词 html . Provided for compatibility with earlier versions of Qt.
s	Strikethrough
samp	Sample code	如同 tt .
small	Small font
span	Grouped elements
strong	Strong	如同 b .
sub	Subscript
sup	Superscript
table	Table	支持下列属性： border , bgcolor (Qt color names or #RRGGBB ), cellspacing , cellpadding , width (absolute or relative), and height .
tbody	表格本体	什么都不做。
td	表数据单元格	支持标准 表单元格属性 .
tfoot	Table footer	什么都不做。
th	Table header cell	支持标准 表单元格属性 .
thead	Table header	若 thead tag is specified, it is used when printing tables that span multiple pages.
title	文档标题	The value specified using the title tag is available through QTextDocument::metaInformation ().
tr	Table row	支持 bgcolor attribute, which can be a Qt color name 或 #RRGGBB color specification.
tt	Typewrite font
u	Underlined
ul	Unordered list	支持标准 列表属性 .
var	变量	如同 i .

块属性

The following attributes are supported by the div , dl , dt , h1 , h2 , h3 , h4 , h5 , h6 , p tags:

• align ( left , right , center , justify )
• dir ( ltr , rtl )

列表属性

The following attribute is supported by the ol and ul tags:

• type ( 1 , a , A , square , disc , circle )

表单元格属性

The following attributes are supported by the td and th tags:

• width (absolute, relative, or no-value)
• bgcolor (Qt color names or #RRGGBB )
• colspan
• rowspan
• align ( left , right , center , justify )
• valign ( top , middle , bottom )

CSS 特性

The following table lists the CSS properties supported by Qt's 富文本 引擎：

特性	值	描述
background-color	<color>	Background color for elements
background-image	<uri>	Background image for elements
color	<color>	Text foreground color
font-family	<family name>	Font family name
font-size	[ small | medium | large | x-large | xx-large ] | <size>pt | <size>px	Font size relative to the document font, or specified in points or pixels
font-style	[ normal | italic | oblique ]
font-weight	[ normal | bold | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 ]	Specifies the font weight used for text, where normal and bold are mapped to the corresponding QFont weights. Numeric values are 8 times the equivalent QFont weight values.
text-decoration	none | [ underline || overline || line-through ]	额外文本效果
font	[ [ <'font-style'> || <'font-weight'> ]? <'font-size'> <'font-family'> ]	Font shorthand property
text-indent	<length>px	First line text indentation in pixels
white-space	normal | pre | nowrap | pre-wrap	Declares how whitespace in HTML is handled.
margin-top	<length>px	Top paragraph margin in pixels
margin-bottom	<length>px	Bottom paragraph margin in pixels
margin-left	<length>px	Left paragraph margin in pixels
margin-right	<length>px	Right paragraph margin in pixels
padding-top	<length>px	Top table cell padding in pixels
padding-bottom	<length>px	Bottom table cell padding in pixels
padding-left	<length>px	Left table cell padding in pixels
padding-right	<length>px	Right table cell padding in pixels
padding	<length>px	Shorthand for setting all the padding properties at once.
vertical-align	baseline | sub | super | middle | top | bottom	Vertical text alignment. For vertical alignment in text table cells only middle, top, and bottom apply.
border-collapse	collapse | separate	Border Collapse mode for text tables. If set to collapse, cell-spacing will not be applied.
border-color	<color>	Border color for text tables and table cells.
border-top-color	<color>	Top border color for table cells.
border-bottom-color	<color>	Bottom border color for table cells.
border-left-color	<color>	Left border color for table cells.
border-right-color	<color>	Right border color for table cells.
border-style	none | dotted | dashed | dot-dash | dot-dot-dash | solid | double | groove | ridge | inset | outset	Border style for text tables and table cells.
border-top-style	<border-style>	Top border style for table cells.
border-bottom-style	<border-style>	Bottom border style for table cells.
border-left-style	<border-style>	Left border style for table cells.
border-right-style	<border-style>	Right border style for table cells.
border-width	<width>px	Width of table or cell border
border-top-width	<length>px	Top border width for table cells.
border-bottom-width	<length>px	Bottom border width for table cells.
border-left-width	<length>px	Left border width for table cells.
border-right-width	<length>px	Right border width for table cells.
border-top	<width>px <border-style> <border-color>	Shorthand for setting top border width, style and color
border-bottom	<width>px <border-style> <border-color>	Shorthand for setting bottom border width, style and color
border-left	<width>px <border-style> <border-color>	Shorthand for setting left border width, style and color
border-right	<width>px <border-style> <border-color>	Shorthand for setting right border width, style and color
border-top	<width>px <border-style> <border-color>	Shorthand for setting top border width, style and color
border-bottom	<width>px <border-style> <border-color>	Shorthand for setting bottom border width, style and color
border	<width>px <border-style> <border-color>	Shorthand for setting all four border's width, style and color
background	[ <'background-color'> || <'background-image'> ]	Background shorthand property
page-break-before	[ auto | always ]	Make it possible to enforce a page break before the paragraph/table
page-break-after	[ auto | always ]	Make it possible to enforce a page break after the paragraph/table
float	[ left | right | none ]	Specifies where an image or a text will be placed in another element. Note that the float property is only supported for tables and images.
text-transform	[ uppercase | lowercase ]	Select the transformation that will be performed on the text prior to displaying it.
font-kerning	[ normal | none ]	Enables or disables kerning between text characters.
font-variant	small-caps	Perform the smallcaps transformation on the text prior to displaying it.
word-spacing	<width>px	Specifies an alternate spacing between each word.
line-height	<number>[% | px | pt | cm]	Specifies the height of a line. It can be one of the following: fixed line height in pixels, points, or centimeters. a percentage of the current font size.

Qt 的特定 CSS 属性

Besides the standard CSS properties listed earlier, the following Qt-specific properties can also be used to style a text block:

特性	值	描述
-qt-block-indent	<number>	Indents the text block by the specified no. spaces.
-qt-list-indent	<number>	Indents the list items by the specified no. of spaces.
-qt-list-number-prefix	<string>	Prefixes the given string to list number in an HTML ordered list.
-qt-list-number-suffix	<string>	Suffixes the given string to list number in an HTML ordered list.
-qt-paragraph-type	empty	Hides the text block.
-qt-table-type	root | frame	root renders the text blocks inline without borders and indentation, whereas frame renders them on a new line with a frame around.
-qt-user-state	<number>	Adds it as user data for the text block.

支持的 CSS 选择器

All CSS 2.1 selector classes are supported except pseudo-class selectors such as :first-child , :visited and :hover .