[Webkit-unassigned] [Bug 40139] New: [GTK] Widgets do not support CSS transformations

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=40139

           Summary: [GTK] Widgets do not support CSS transformations
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Gtk
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mrobinson at webkit.org


GTK+ themes require painting onto a GdkDrawable. In the common case this is the GdkPixmap of the widget window. Because this happens at a lower level than the GraphicsContext, nothing except the widget text honors the transformation matrix.

One approach to fixing this is to detect situations in which the GraphicsContext has a rotational transformation matrix and, in those cases, render onto an intermediary GdxPixbuf surface and then copy that to the graphics context.

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