CSSでblend-modeを使ってみよう！

by Emi MATSUDA

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CSSͰblend-modeΛ࢖ͬͯΈΑ͏ʂ 2019.11.29(fri) 18:00~ tambourine inc. enginner : MATSUDA Emi

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ϑϩϯτଆͰɺը૾Λ৮Δඞཁ͕͋Δ৔߹

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ϑϩϯτଆͰɺը૾Λ৮Δඞཁ͕͋Δ৔߹ • Ϩεϙϯγϒ Πϝʔδ • τϦϛϯά • ϦαΠζ • มܗ

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ϑϩϯτଆͰɺը૾Λ৮Δඞཁ͕͋Δ৔߹ • Ϩεϙϯγϒ Πϝʔδɿpictureཁૉɺsrcsetଐੑ • τϦϛϯάɿobject-ﬁtʢclip͸ফ໓ʣϓϩύςΟ • ϦαΠζɿwidthͱ͔max-widthͱ͔ͷϓϩύςΟ • มܗɿtransformϓϩύςΟ

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͜ͳ͍ͩґཔ͞Εͨ΍ͭ • ʛɾωɾʣ{ ϩΰɺޫΒͤͯɻ

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͜ͳ͍ͩґཔ͞Εͨ΍ͭ • ʛɾωɾʣ{ ϩΰɺޫΒͤͯɻ • …ɻ } ʢɾωɾ

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͜ͳ͍ͩґཔ͞Εͨ΍ͭ • ౉͞Εͨϩΰ

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͜ͳ͍ͩґཔ͞Εͨ΍ͭ • ౉͞Εͨϩΰ • ࠇഎܠ͖ͭpng

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͜ͳ͍ͩґཔ͞Εͨ΍ͭ • ౉͞Εͨϩΰ • ࠇഎܠ͖ͭpng • …ɻ } ʢɾωɾ

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CSSͰͳΜͱ͔͢Δͧɻ

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ը૾ʹରͯ͠௚઀ޮՌΛ༩͑Δ

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ը૾ʹରͯ͠௚઀ޮՌΛ༩͑Δ • ﬁlterϓϩύςΟ • blend-modeϓϩύςΟ

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ը૾ʹରͯ͠௚઀ޮՌΛ༩͑Δ • ﬁlterϓϩύςΟɿը૾શମʹରͯ͠ޮՌΛ༩͑Δ • blend-modeϓϩύςΟɿ৭ͷॏͳΓʹޮՌΛ༩͑Δ

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ը૾ʹରͯ͠௚઀ޮՌΛ༩͑Δ • ﬁlterϓϩύςΟɿը૾શମʹରͯ͠ޮՌΛ༩͑Δ • blend-modeϓϩύςΟɿ৭ͷॏͳΓʹޮՌΛ༩͑Δ

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ը૾ʹରͯ͠௚઀ޮՌΛ༩͑Δ • ཁ͸ɺPhotoshopͷίϨ

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blend-modeϓϩύςΟͱ͸ • background-blend-mode • mix-blend-mode

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blend-modeϓϩύςΟͱ͸ • background-blend-modeɿཁૉͷഎܠը૾ɾഎܠ৭ΛϒϨ ϯυ͢Δͱ͖ʹ࢖͏ • mix-blend-modeɿޙΖʹ͋Δཁૉͱͷը૾ɾഎܠ৭Λϒ Ϩϯυ͢Δͱ͖ʹ࢖͏

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blend-modeϓϩύςΟͱ͸ • background-blend-modeɿཁૉͷഎܠը૾ɾഎܠ৭ΛϒϨ ϯυ͢Δͱ͖ʹ࢖͏ • mix-blend-modeɿޙΖʹ͋Δཁૉͱͷը૾ɾഎܠ৭Λϒ Ϩϯυ͢Δͱ͖ʹ࢖͏

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blend-modeϓϩύςΟͱ͸ • demo • https://jsﬁddle.net/4ghyzvcp/53/

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͜ͳ͍ͩґཔ͞Εͨ΍ͭ • ౉͞Εͨϩΰ • ࠇഎܠ͖ͭpng

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͜ͳ͍ͩґཔ͞Εͨ΍ͭ • ౉͞Εͨϩΰ • demo • https://jsﬁddle.net/xnza8hbk/9/

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஫ҙ఺ • ࢖͑Δͱ͜ΖΛΘ͖·͑Α͏ɻ • https://caniuse.com/#search=mix-blend-mode

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஫ҙ఺ • ׬੒͍ͯ͠ͳ͍ը૾ͷ୅ΘΓʹ࢖͏ͷ͸NG • ͲΜͳ؀ڥͰ΋ɺ৘ใ͸ਖ਼͘͠఻͑Δ౒ྗΛɻ • ϓϥεΞϧϑΝͷ૷০ʹ࢖͏ͳΒ͍͍͔ͳʔɻ͘Β͍ɻ

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·ͱΊ • ͓࢓ࣄ͸͍ΖΜͳཁٻʹԠ͑ͳ͍ͱ͍͚ͳ͍ • ը૾ΛCSSͰ͍͡Δ͜ͱ͸Մೳ • ͪΐͬͱͨ͠ΤϑΣΫτՃ͑ΔͷͰ͋Ε͹ɺCSS͸ศར • ΍Γ͗͢͸Α͘ͳ͍

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͓ΘΓ • ͋Γ͕ͱ͏͍͟͝·ͨ͠ɻ