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词条 Block Elements
释义

  1. Character table

  2. Font coverage

  3. Compact table

  4. History

  5. Related symbols

  6. See also

  7. References

{{Infobox Unicode block
|blockname = Block Elements
|rangestart = 2580
|rangeend = 259F
|script1 = Common
|symbols = Block fills
|1_0_0 = 22
|3_2 = 10
|note = [1][2]
}}

Block Elements is a Unicode block containing square block symbols of various fill and shading. Used along with block elements are box-drawing characters, shade characters, and terminal graphic characters. These can be used for filling regions of the screen and portraying drop shadows.

Character table

CodeResultDescription
U+2580▀Upper half block
U+2581▁Lower one eighth block
U+2582▂Lower one quarter block
U+2583▃Lower three eighths block
U+2584▄Lower half block
U+2585▅Lower five eighths block
U+2586▆Lower three quarters block
U+2587▇Lower seven eighths block
U+2588█Full block
U+2589▉Left seven eighths block
U+258A▊Left three quarters block
U+258B▋Left five eighths block
U+258C▌Left half block
U+258D▍Left three eighths block
U+258E▎Left one quarter block
U+258F▏Left one eighth block
U+2590▐Right half block
U+2591░Light shade
U+2592▒Medium shade
U+2593▓Dark shade
U+2594▔Upper one eighth block
U+2595▕Right one eighth block
U+2596▖Quadrant lower left
U+2597▗Quadrant lower right
U+2598▘Quadrant upper left
U+2599▙Quadrant upper left and lower left and lower right
U+259A▚Quadrant upper left and lower right
U+259B▛Quadrant upper left and upper right and lower left
U+259C▜Quadrant upper left and upper right and lower right
U+259D▝Quadrant upper right
U+259E▞Quadrant upper right and lower left
U+259F▟Quadrant upper right and lower left and lower right

Font coverage

Font sets like Code2000 and the DejaVu family—include coverage for each of the glyphs in the Block Elements range,[3] Unifont also contains all the glyphs.[4] Among the fonts in widespread use,[5][6] full implementation is provided by Segoe UI Symbol and significant partial implementation of this range is provided by Arial Unicode MS and Lucida Sans Unicode, which include coverage for 69% (22 out of 32) and 66% (21 out of 32) of the symbols, respectively.[3]

The glyphs in Block Elements each share the same character width in most supported fonts, allowing them to be used graphically in row and column arrangements. However, the block doesn't contain a space character of its own and ASCII space may or may not render at the same width as Block Elements glyphs. This fatal flaw tends to discourage their use, as rendering across platforms and browsers is rarely consistent. A common workaround for this is using light shade instead of a space.

Compact table

{{Unicode chart Block Elements}}

History

The following Unicode-related documents record the purpose and process of defining specific characters in the Block Elements block:

Version Final code points Count L2 ID WG2 ID Document
1.0.0 U+2580..2595 22 (to be determined)
3.2U+2596..259F10[https://www.unicode.org/L2/L2000/00159-ucsterminal.txt L2/00-159]}}title=Supplemental Terminal Graphics for Unicode|date=2000-03-31|first=Frank da|last=Cruz}}
[https://www.unicode.org/L2/L2000/00329-TerminalSumForm.pdf L2/00-329]}} [https://unicode.org/wg2/docs/n2265.doc N2265] title=Proposal for Terminal Graphic Symbols in the BMP|date=2000-09-19|first=Ken|last=Whistler}}
1. ^{{cite web|url=https://www.unicode.org|title=Unicode character database|work=The Unicode Standard|accessdate=2016-07-09}}
2. ^{{cite web|url=https://www.unicode.org/versions/enumeratedversions.html|title=Enumerated Versions of The Unicode Standard|work=The Unicode Standard|accessdate=2016-07-09}}
3. ^1 {{cite web | url=https://www.fileformat.info/info/unicode/block/block_elements/fontsupport.htm | title=Font Support for Unicode Block 'Block Elements' | accessdate=2016-03-13}}
4. ^{{cite web|url=http://unifoundry.com/unifont.html |title=GNU Unifont Glyphs |publisher=Unifoundry.com |date= |accessdate=2013-11-12}}
5. ^{{cite web | url=http://www.fonts.com.hk/modules.php?name=Content&pa=showpage&pid=246 | title=Mac OS X 10.5 bundled with Arial Unicode MS | accessdate=2008-09-17 | deadurl=yes | archiveurl=https://archive.is/20130107171616/http://www.fonts.com.hk/modules.php?name=Content&pa=showpage&pid=246 | archivedate=2013-01-07 | df= }}
6. ^{{cite web | url=http://www.ampsoft.net/webdesign-l/WindowsMacFonts.html | title=Common fonts to all versions of Windows & Mac equivalents | accessdate=2008-09-17}}

Related symbols

  • {{unichar|220E|End of Proof}} in the Mathematical Operators Unicode block.
  • {{unichar|25A0|Black square}} in the Geometric Shapes Unicode block.

See also

  • Unicode symbols
  • Dingbat
  • Box Drawing, a Unicode block
  • Geometric Shapes, a Unicode block
  • Box-drawing character
  • Code page 437, the character set of the original IBM PC
  • Semigraphics (or pseudographics)
  • Tombstone (typography)

References

{{reflist}}

1 : Unicode blocks
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