SwiftとCoreTextと文字組み

Transcript

1. !.FMPOTXJGU
   ழࣂେࢤ೔ຊܦࡁ৽ฉࣾ
   4XJGUͱ$PSF5FYUͱจࣈ૊Έ
   

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2. 2
   ழࣂେࢤʢ*LBJ5BJTIJʣ
   ೔ຊܦࡁ৽ฉࣾͷΤϯδχΞ
   ࢴ໘ϏϡʔΞʔΞϓϦͷ։ൃ
   4XJGU/PEFKT1ZUIPO
   ϝϩϯ೿
   ࣗݾ঺հ
   

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3. จࣈ૊Έ͍ͯ͠·͔͢ʁ
   3
   

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4. 4
   ग़యIUUQPFDOFUTZPLV[BJNFMPO
   ΞʔϧεɾϑΣϘϦοτ
   ʢผ໊ʣϚεΫϝϩϯ
   ໢ϝϩϯͷ୅ද඼छͰ͢ɻՌൽ͸྘৭Ͱશ໘
   ʹඒ͍͠໢໨໛༷͕Ͱ͍ͯ·͢ɻ
   

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5. 5
   ग़యIUUQPFDOFUTZPLV[BJNFMPO
   ΞʔϧεɾϑΣϘϦοτ
   ʢผ໊ʣϚεΫϝϩϯ
   ໢ϝϩϯͷ୅ද඼छͰ͢ɻՌൽ͸྘৭Ͱશ໘
   ʹඒ͍͠໢໨໛༷͕Ͱ͍ͯ·͢ɻ
   

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6. 6
   ग़యIUUQPFDOFUTZPLV[BJNFMPO
   ΞʔϧεɾϑΣϘϦοτ
   ʢผ໊ʣϚεΫϝϩϯ
   ໢ϝϩϯͷ୅ද඼छͰ͢ɻՌൽ͸྘৭Ͱશ໘
   ʹඒ͍͠໢໨໛༷͕Ͱ͍ͯ·͢ɻ
   

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7. 7
   ग़యIUUQPFDOFUTZPLV[BJNFMPO
   ΞʔϧεɾϑΣϘϦοτ
   ʢผ໊ʣϚεΫϝϩϯ
   ໢ϝϩϯͷ୅ද඼छͰ͢ɻՌൽ͸྘৭Ͱશ໘
   ʹඒ͍͠໢໨໛༷͕Ͱ͍ͯ·͢ɻ
   ʢผ໊ʣ
   

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8. ΞʔϧεɾϑΣϘϦοτ
   ໢ϝϩϯͷ୅ද඼छͰ͢ɻՌൽ͸྘৭Ͱશ໘
   ʹඒ͍͠໢໨໛༷͕Ͱ͍ͯ·͢ɻ
   ʢผ໊ʣϚεΫϝϩϯ
   8
   ग़యIUUQPFDOFUTZPLV[BJNFMPO
   ʢผ໊ʣ
   ʢผ໊ʣ
   

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9. 9
   ग़యIUUQPFDOFUTZPLV[BJNFMPO
   ΞʔϧεɾϑΣϘϦοτ
   ໢ϝϩϯͷ୅ද඼छͰ͢ɻՌൽ͸྘৭Ͱશ໘
   ʹඒ͍͠໢໨໛༷͕Ͱ͍ͯ·͢ɻ
   ʢผ໊ʣϚεΫϝϩϯ
   

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11. ߦ಄ͷׅހΛͭΊΔฤ
    $PSF5FYUΛ࢖ͬͨඳը
    11
    

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12. 12
    /4"UUSJCVUFE4USJOH͔Β$55ZQFTFUUFSΛੜ੒

    

    Ұߦͷ௕͞ %PVCMF
    Λ͋ͨ͑ͯɺվߦ͢Δ·Ͱͷจࣈ਺
    ΛಘΔ
    var typesetter = CTTypesetterCreateWithAttributedString(

    attributedText)
    let count = CTTypesetterSuggestLineBreak(

    typesetter, 0, Double(lineWidth))
    $PSF5FYUΛ࢖ͬͨඳըʕߦ಄ͷׅހΛͭΊΔฤ
    ໢ϝϩϯͷ୅ද඼छͰ͢ɻՌൽ͸྘৭Ͱશ໘ʹ

    ʹ
    20 21
    19
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    16
    15
    14
    13
    12
    11
    10
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    5
    4
    3
    2
    1
    

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13. 13
    $55ZQFTFUUFS͔ΒҰߦ෼ͷ$5-JOFΛੜ੒

    

    ߦ಄͕࢝ΊׅހͳΒɺӈʹدͤΔ෼ͷ௕͞ΛಘΔ
    let ctline = CTTypesetterCreateLine(

    typesetter, CFRangeMake(0, count))
    let offsetX = fontSize / 2 // ͱΓ͋͑ͣϑΥϯταΠζͷ൒෼ʹ
    $PSF5FYUΛ࢖ͬͨඳըʕߦ಄ͷׅހΛͭΊΔฤ
    ʢ
    

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14. 14
    ӈʹدͤΔ෼Λઃఆͯ͠ɺ$5-JOFΛඳը

    

    ߦ਺෼͘Γ͔͑͢
    CGContextSetTextPosition(context, offsetX, offsetY)

    CTLineDraw(ctline, context)
    $PSF5FYUΛ࢖ͬͨඳըʕߦ಄ͷׅހΛͭΊΔฤ
    ʢผ໊ʣϚεΫϝϩϯ
    ʢผ໊ʣϚεΫϝϩϯ
    

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15. 15
    /4"UUSJCVUFE4USJOHΑΓ΋̏ഒ͘Β͍஗͍
    จࣈ͕ଟ͘ͳΔͱɺNT NT
    Λ௒͑Δ
    ͜ͱ΋
    ಛʹ$55ZQFTFUUFS$SFBUF8JUI"UUSJCVUFE4USJOH͕ॏ͍
    ͸͍ͭ͜ͷ࣌ؒ
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    ύϑΥʔϚϯε
    

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16. HJUIVCDPNJLBJU,FSO-BCFM
    16
    ߦ಄Ґஔௐ੔ɺࠨɾதԝɾӈɾۉ౳ἧ͑ɺ

    ྡ઀͢Δ໿෺ͷִؒΛௐ੔ɺ۟ಡ఺ͷ௥͍ग़͠ͳͲ
    ϥΠϒϥϦΛ͍ͭͬͯ͘·͢
    

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17. $PSF5FYU͸4XJGUͰͲ͏มԽ
    17
    ͓·͚
    

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18. 18
    4XJGU 4XJGU
    $PSF(SBQIJDT
    

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19. 19
    4XJGU 4XJGU
    $PSF(SBQIJDT
    

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20. 20
    $PSF5FYU
    4XJGU 4XJGU
    

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