[Webkit-unassigned] [Bug 29785] New: [Gtk][Layout tests] Generate results for transforms tests

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=29785

           Summary: [Gtk][Layout tests] Generate results for transforms
                    tests
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: WebKit Gtk
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: zandobersek at gmail.com


Created an attachment (id=40194)
 --> (https://bugs.webkit.org/attachment.cgi?id=40194)
Comparisment of Gtk and Mac render trees

Currently, 5 tests in transforms/ directory need to have results generated:
transforms/no_transform_hit_testing.html
transforms/2d/compound-transforms-vs-containers.html
transforms/2d/transform-borderbox.html
transforms/2d/transform-origin-borderbox.html
transforms/2d/zoom-menulist.html

Attached is the comparisment of Mac and Gtk render trees.

Analysis: Beacuse of the differences in the metrics, RenderText objects are 2
pixels higher in the Gtk's generated results. Subsequently the parents are also
higher, making their siblings being pushed down the y axis for an even number
of pixels.

Noticable difference appears between generated results for test
transforms/2d/zoom-menulist.html:

-       RenderBlock (anonymous) at (0,58) size 784x66
?                                     ^^           ^^
+       RenderBlock (anonymous) at (0,63) size 784x79
?                                     ^^           ^^
-         RenderMenuList {SELECT} at (6,6) size 185x54 [bgcolor=#FFFFFF]
[border: (3px solid #000000)]
?                                                ^^ ^^                 
------------------------------
+         RenderMenuList {SELECT} at (6,6) size 136x67 [bgcolor=#FFFFFF]
?                                                ^^ ^^
-           RenderBlock (anonymous) at (3,3) size 179x48
?                                       ^ ^        ^ ---
+           RenderBlock (anonymous) at (4,4) size 111x59
?                                       ^ ^        ^^^^
-             RenderText at (24,3) size 65x39
?                            ^^ ^       ^ --
+             RenderText at (0,0) size 80x59
?                            ^ ^       ^^^
-               text run at (24,3) width 65: "One"
?                            ^^ ^        ^^
+               text run at (0,0) width 80: "One"
?                            ^ ^        ^^

I recon this has something to do with Mac port's rendering of menu lists, or
perhaps the menu list isn't even zoomed at all on the Gtk side.
A separate bug should be opened for this issue, adding generated results to
this test only when the bug is resolved, whichever way it goes.

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