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  1. Core ReactOS
  2. CORE-13468

[font/freetype] Vertically Writing (tategaki) support

    XMLWordPrintable

    Details

    • Type: New Feature
    • Status: Open
    • Priority: Minor
    • Resolution: Unresolved
    • Fix Version/s: None
    • Component/s: Win32SS
    • Labels:

      Description

      We have to implement "TATEGAKI" for Asian font support. This word "tategaki" means vertically writing in Japanese.

      Please see the screenshot Tategaki.png and the test program Tategaki.zip. Tategaki are usually used in Asian.

      The tategaki font name begins by "@". For example, The font name "@MS Gothic" indicates a rotated font of "MS Gothic". Usually tategaki are used with font rotation. However arbitary font rotation will be later work.

      Keywords are: FT_HAS_VERTICAL and FT_LOAD_VERTICAL_LAYOUT.

      If FT_HAS_VERTICAL(face) is true, the face has vertical text layout. Then, you can use "@" plus font name. If you loads a glyph with FT_LOAD_VERTICAL_LAYOUT, the loaded glyph might have special layout (especially Asian-specific characters of class Tu or class Tr). In tategaki font (with @), the characters of class U and class Tr should spin 90 degrees counterclockwise. The character of class R has no difference in rendering. See freetype documents for details. See VerticalOrientation-17.txt for character classification.

      The tategaki font names should be enumerated with "@", by EnumFontFamiliesEx function.

        Attachments

        1. add-tategaki-tests.patch
          11 kB
        2. add-tategaki-tests.patch
          11 kB
        3. aoview20060317src.zip
          184 kB
        4. generate_vert_font_table.py
          2 kB
        5. generate_vert_font_table.py
          1 kB
        6. metrics2.png
          metrics2.png
          2 kB
        7. result.txt
          11 kB
        8. Tategaki.png
          Tategaki.png
          5 kB
        9. Tategaki.zip
          81 kB
        10. tategaki-after.txt
          100 kB
        11. tategaki-before.txt
          100 kB
        12. TategakiTest.sfd
          23 kB
        13. TategakiTest.sfd
          24 kB
        14. TategakiTest.ttf
          5 kB
        15. TategakiTest.ttf
          5 kB
        16. TategakiTest.zip
          28 kB
        17. TategakiTest.zip
          27 kB
        18. tategaki-wip.patch
          16 kB
        19. VerticalOrientation-17.txt
          13 kB

          Activity

            People

            • Assignee:
              bug zilla Bug Zilla
              Reporter:
              katayama_hirofumi_mz Katayama Hirofumi MZ
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              Dates

              • Created:
                Updated: