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9c762b9650
CMYK data describes which inks a printer should use to print a color. If a screen should display a color that's supposed to look similar to what the printer produces, it results in a color very different to what Color::from_cmyk() produces. (It's also printer-dependent.) There are many ICC profiles describing printing processes. It doesn't matter too much which one we use -- most of them look somewhat similar, and they all look dramatically better than Color::from_cmyk(). This patch adds a function to download a zip file that Adobe offers on their web site. They even have a page for redistribution: https://www.adobe.com/support/downloads/iccprofiles/icc_eula_win_dist.html (That one leads to a broken download though, so this downloads the end-user version.) In case we have to move off this download at some point, there are also a whole bunch of profiles at https://www.color.org/registry/index.xalter that "may be used, embedded, exchanged, and shared without restriction". The adobe zip contains a whole bunch of other useful and fun profiles, so I went with it. For now, this only unzips the USWebCoatedSWOP.icc file though, and installs it in ${CMAKE_BINARY_DIR}/Root/res/icc/Adobe/CMYK/. In Serenity builds, this will make it to /res/icc/Adobe/CMYK in the disk image. And in lagom build, after #23016 this is the lagom res staging directory that tools can install via Core::ResourceImplementation. `pdf` and `MacPDF` already do that, `TestPDF` now does it too. The final piece is that LibPDF then loads the profile from there and uses it for DeviceCMYK color conversions. (Doing file access from the bowels of a library is a bit weird, especially in a system that has sandboxing built in. But LibGfx does that in FontDatabase too already, and LibPDF uses that, so it's not a new problem.)
31 lines
706 B
CMake
31 lines
706 B
CMake
set(SOURCES
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ColorSpace.cpp
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CommonNames.cpp
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Document.cpp
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DocumentParser.cpp
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Encoding.cpp
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Encryption.cpp
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Filter.cpp
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Fonts/CFF.cpp
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Fonts/PDFFont.cpp
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Fonts/PS1FontProgram.cpp
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Fonts/SimpleFont.cpp
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Fonts/TrueTypeFont.cpp
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Fonts/Type0Font.cpp
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Fonts/Type1Font.cpp
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Fonts/Type1FontProgram.cpp
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Fonts/Type3Font.cpp
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Function.cpp
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Interpolation.cpp
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ObjectDerivatives.cpp
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Page.cpp
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Parser.cpp
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Reader.cpp
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Renderer.cpp
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Value.cpp
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)
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serenity_lib(LibPDF pdf)
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target_link_libraries(LibPDF PRIVATE LibCompress LibCore LibIPC LibGfx LibTextCodec LibCrypto)
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include(${SerenityOS_SOURCE_DIR}/Meta/CMake/download_icc_profiles.cmake)
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