[Webkit-unassigned] [Bug 218519] New: Can't paste image data (like image/png) from the clipboard in WebKitGtk browsers.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=218519

            Bug ID: 218519
           Summary: Can't paste image data (like image/png) from the
                    clipboard in WebKitGtk browsers.
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKitGTK
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: miikka.veijonen at gmail.com
                CC: bugs-noreply at webkitgtk.org

I'm unable to paste any images from my clipboard into browser windows using WebKitGtk (like Epiphany or WebKitGtk MiniBrowser).

I've verified that the data certainly is in the clipboard because following commands:
xclip -selection clipboard -t image/png -o > image.png
xclip -selection clipboard -t image/bmp -o > image.bmp
outputs proper bitmap or PNG files. And I'm also able to paste the data in Gimp, Firefox, LibreOffice and Chromium. Only the WebKitGtk based browser does not work properly so I assume the problem is with my WebKitGtk. I compiled webkitgtk-2.30.2 and Epiphany from git (2020-10-29) manually but the problem still exists in Epiphany and in the MiniBrowser.

Could there be some library I'm missing or something?

I found one bug that could relate: https://bugs.webkit.org/show_bug.cgi?id=211519 but in there there is broken image area when the data has been pasted. With my problem the browser does nothing when I hit Ctrl+V (like in chat/email window or in imgur.com).

I compiled WebKitGtk with the following arguments:
cmake .. -DCMAKE_BUILD_TYPE=Release -DPORT=GTK -DENABLE_MINIBROWSER=ON -DCMAKE_EXE_LINKER_FLAGS="-Wl,--as-needed -Wl,-z,now -pthread" -DCMAKE_MODULE_LINKER_FLAGS="-Wl,--as-needed -Wl,-z,now -pthread" -DCMAKE_SHARED_LINKER_FLAGS="-Wl,--as-needed -Wl,-z,now -pthread" -DUSE_WOFF2=false -DENABLE_MEDIA_SOURCE=OFF -DPYTHON_EXECUTABLE=/usr/bin/python3:
-- Enabled features:
--  ENABLE_ACCELERATED_2D_CANVAS .................. OFF
--  ENABLE_BUBBLEWRAP_SANDBOX                       ON
--  ENABLE_DRAG_SUPPORT ........................... ON
--  ENABLE_GLES2                                    OFF
--  ENABLE_GRAPHICS_CONTEXT_GL .................... ON
--  ENABLE_GTKDOC                                   OFF
--  ENABLE_INTROSPECTION .......................... ON
--  ENABLE_MEDIA_SOURCE                             OFF
--  ENABLE_MINIBROWSER ............................ ON
--  ENABLE_QUARTZ_TARGET                            OFF
--  ENABLE_SHAREABLE_RESOURCE ..................... ON
--  ENABLE_SPELLCHECK                               ON
--  ENABLE_TOUCH_EVENTS ........................... ON
--  ENABLE_VIDEO                                    ON
--  ENABLE_WAYLAND_TARGET ......................... ON
--  ENABLE_WEBDRIVER                                ON
--  ENABLE_WEB_AUDIO .............................. ON
--  ENABLE_WEB_CRYPTO                               ON
--  ENABLE_X11_TARGET ............................. ON
--  USE_GTK4                                        OFF
--  USE_LIBHYPHEN ................................. ON
--  USE_LIBNOTIFY                                   ON
--  USE_LIBSECRET ................................. ON
--  USE_OPENJPEG                                    ON
--  USE_SYSTEMD ................................... ON
--  USE_WOFF2                                       false
--  USE_WPE_RENDERER .............................. ON
-- Configuring done
-- Generating done

Distro: openSUSE Leap 15.2
DE: KDE/Plasma 5.18.5

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