[Webkit-unassigned] [Bug 25742] New: Fix RenderThemeChromiumWin::paintTextFieldInternal() not to hide background image.

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue May 12 16:40:18 PDT 2009


           Summary: Fix RenderThemeChromiumWin::paintTextFieldInternal() not
                    to hide background image.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Windows Vista
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: tyoshino at google.com
                CC: brettw at chromium.org, dglazkov at chromium.org

Fix RenderThemeChromiumWin::paintTextFieldInternal().

We shouldn't paint the content area of text fields when o->style() has
background image or transparent background color. paintTextFieldInternal() is
used for painting inner area of HTML option elements by Chromium.

When we pass fillContentArea = true to ChromiumBridge::paintTextField, it hides
the background image rendered by RenderBoxModelObject. So, we should set
fillContentArea = false in such case.

Besides, when background-color:transparent is specified for CSS property,
o->style().backgroundColor returns black color with alpha channel == 0. But
since ThemeEngine for Windows behind ChromiumBridge::paintTextField cannot
recognize alpha channel, it fills the rect with black. I made workaround to set
fillContentArea = false when alpha channel == 0 to avoid this.

And more, I'd like to fallback the color passed to ChromiumBridge to white when
o->style()->backgroundColor() is invalid.

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