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10.1 Introduction
10.1 Introduction
Text that is to be rendered as part of an SVG document fragment is specified using the 'text' element. The characters to be drawn are expressed as XML character data [XML10] inside the 'text' element.
Text that is to be rendered as part of an SVG document fragment is specified using the ‘text’ element. The characters to be drawn are expressed as XML character data ([XML10], section 2.4) inside the ‘text’ element.
SVG's 'text' elements are rendered like other graphics elements. Thus, coordinate system transformations, painting, clipping and masking features apply to 'text' elements in the same way as they apply to shapes such as paths and rectangles.
SVG's ‘text’ elements are rendered like other graphics elements. Thus, coordinate system transformations, painting, clipping and masking features apply to ‘text’ elements in the same way as they apply to shapes such as paths and rectangles.
Each 'text' element causes a single string of text to be rendered. SVG performs no automatic line breaking or word wrapping. To achieve the effect of multiple lines of text, use one of the following methods:
Each ‘text’ element causes a single string of text to be rendered. SVG performs no automatic line breaking or word wrapping. To achieve the effect of multiple lines of text, use one of the following methods:
The author or authoring package needs to pre-compute the line breaks and use multiple 'text' elements (one for each line of text).
The author or authoring package needs to pre-compute the line breaks and use multiple ‘text’ elements (one for each line of text).
The author or authoring package needs to pre-compute the line breaks and use a single 'text' element with one or more 'tspan' child elements with appropriate values for attributes x, y, dx and dy to set new start positions for those characters which start new lines. (This approach allows user text selection across multiple lines of text -- see Text selection and clipboard operations.)
The author or authoring package needs to pre-compute the line breaks and use a single ‘text’ element with one or more ‘tspan’ child elements with appropriate values for attributes ‘x’, ‘y’, ‘dx’ and ‘dy’ to set new start positions for those characters which start new lines. (This approach allows user text selection across multiple lines of text -- see Text selection and clipboard operations.)
Express the text to be rendered in another XML namespace such as XHTML [XHTML] embedded inline within a 'foreignObject' element. (Note: the exact semantics of this approach are not completely defined at this time.)
Express the text to be rendered in another XML namespace such as XHTML [XHTML] embedded inline within a ‘foreignObject’ element. (Note: the exact semantics of this approach are not completely defined at this time.)
The text strings within 'text' elements can be rendered in a straight line or rendered along the outline of a 'path' element. SVG supports the following international text processing features for both straight line text and text on a path:
The text strings within ‘text’ elements can be rendered in a straight line or rendered along the outline of a ‘path’ element. SVG supports the following international text processing features for both straight line text and text on a path:
horizontal and vertical orientation of text
horizontal and vertical orientation of text
left-to-right or bidirectional text (i.e., languages which intermix right-to-left and left-to-right text, such as Arabic and Hebrew)
left-to-right or bidirectional text (i.e., languages which intermix right-to-left and left-to-right text, such as Arabic and Hebrew)
when SVG fonts are used, automatic selection of the correct glyph corresponding to the current form for Arabic and Han text
when SVG fonts are used, automatic selection of the correct glyph corresponding to the current form for Arabic and Han text
(The layout rules for straight line text are described in Text layout. The layout rules for text on a path are described in Text on a path layout rules.)
(The layout rules for straight line text are described in Text layout. The layout rules for text on a path are described in Text on a path layout rules.)
Because SVG text is packaged as XML character data [XML10]:
Because SVG text is packaged as XML character data:
Text data in SVG content is readily accessible to the visually impaired (see Accessibility Support)
Text data in SVG content is readily accessible to the visually impaired (see Accessibility Support)
In many viewing scenarios, the user will be able to search for and select text strings and copy selected text strings to the system clipboard (see Text selection and clipboard operations)
In many viewing scenarios, the user will be able to search for and select text strings and copy selected text strings to the system clipboard (see Text selection and clipboard operations)
XML-compatible Web search engines will find text strings in SVG content with no additional effort over what they need to do to find text strings in other XML documents
XML-compatible Web search engines will find text strings in SVG content with no additional effort over what they need to do to find text strings in other XML documents
Multi-language SVG content is possible by substituting different text strings based on the user's preferred language.
Multi-language SVG content is possible by substituting different text strings based on the user's preferred language.
For accessibility reasons, it is recommended that text which is included in a document have appropriate semantic markup to indicate its function. See SVG accessibility guidelines for more information.
For accessibility reasons, it is recommended that text which is included in a document have appropriate semantic markup to indicate its function. See SVG accessibility guidelines for more information.