Bug 52051 – [GTK] Port scrollbar painting to GtkStyleContext

• Component: WebKitGTK
• Status: RESOLVED FIXED

[Carlos Garcia Campos]

We should use GtkStyleContext API to paint the scrollbars when using gtk3

[Carlos Garcia Campos]

Created attachment 78218 [details]
Use GtkStyleContext API to paint scrollbars

[WebKit Review Bot]

Attachment 78218 [details] did not pass style-queue:

Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/JavaScriptCore/ChangeLog', u'Source/JavaScriptCore/wtf/gobject/GTypedefs.h', u'WebCore/ChangeLog', u'WebCore/platform/gtk/RenderThemeGtk.h', u'WebCore/platform/gtk/RenderThemeGtk3.cpp', u'WebCore/platform/gtk/ScrollbarThemeGtk.cpp', u'WebCore/platform/gtk/ScrollbarThemeGtk.h', u'WebCore/platform/gtk/ScrollbarThemeGtk2.cpp', u'WebCore/platform/gtk/ScrollbarThemeGtk3.cpp']" exit_code: 1
WebCore/platform/gtk/ScrollbarThemeGtk3.cpp:62:  Use 0 instead of NULL.  [readability/null] [5]
WebCore/platform/gtk/ScrollbarThemeGtk3.cpp:166:  Use 0 instead of NULL.  [readability/null] [5]
WebCore/platform/gtk/ScrollbarThemeGtk3.cpp:178:  Use 0 instead of NULL.  [readability/null] [5]
Total errors found: 3 in 8 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[Martin Robinson]

Comment on attachment 78218 [details]
Use GtkStyleContext API to paint scrollbars

View in context: https://bugs.webkit.org/attachment.cgi?id=78218&action=review

Great. Please fix the two minor issues before landing this.

> WebCore/platform/gtk/ScrollbarThemeGtk3.cpp:46
> +    m_context = static_cast<RenderThemeGtk*>(RenderTheme::defaultTheme().get())->gtkScrollbarStyle();

You should use a an initialization field here.
ScrollbarThemeGtk::ScrollbarThemeGtk()
    : m_context(static_cast<RenderThemeGtk*>(RenderTheme::defaultTheme().get())->gtkScrollbarStyle())

> WebCore/platform/gtk/ScrollbarThemeGtk3.cpp:53
> +    gtk_style_context_get_style(m_context,

I think we should ASSERT(m_context) before here.

[Carlos Garcia Campos]

Committed r75259: <http://trac.webkit.org/changeset/75259>

[WebKit Review Bot]

http://trac.webkit.org/changeset/75259 might have broken GTK Linux 64-bit Debug