Figured I should have added more details.
The reason I'm interested in getting the style property is because only
with this information I can perform some drawing operations on my custom
widgets. For example, if I need to draw a line with arbitrary thickness I
need to get the 'foreground-color' property and use
Cairo::move_to/line_to/stroke functions myself because
Gtk::StyleContext::render_line always draws a 1 pixel line!
Following code snippet attempts to read the foreground color property of a
Gtk::Button.
* Glib::RefPtr <Gtk::StyleContext> refStyleContext =
m_oBtn2.get_style_context(); int nColor; Gdk::RGBA oColor =
refStyleContext->get_color(Gtk::STATE_FLAG_NORMAL);
refStyleContext->get_style_property("color", nColor); std::cout << "From
direct API:" << oColor.to_string() << std::endl; std::cout << "From
get_style_property:" << nColor << std::endl;*
And the results are,
*From direct API:rgb(76,76,76)(Icontheme:8824): Gtk-WARNING **:
/build/gtk+3.0-2Ut_nl/gtk+3.0-3.18.9/./gtk/gtkstylecontext.c:1781: widget
class 'gtkmm__GtkButton' has no style property named 'color'From
get_style_property:0*
As you can see, the foreground color property is correctly returned by the
call to *Gtk::StyleContext::get_color()* function however the call to
*Gtk::StyleContext::get_style_property* only results in a warning.
Is 'color' really not a valid style property? On using GtkInspector I could
see that there is a property by name 'color'.
I did some digging and found the function *_gtk_style_context_peek_property*
which is apparently used by all other internal functions to fetch style
property values. How to access this function, because it looks like a
private function that is not wrapped by GTKMM? Is there any other API that
could be used to do the same job.
My search for property names ended in GQuarks and hashtable with no
results! Any pointers in the right direction would be much appreciated.
On Tue, Feb 18, 2020 at 6:20 PM Gowthami S D <gowthami...@skanray.com>
wrote:
> please help me..How to fetch the custom style properties through gtkmm..If
> you people send me the sample code it will be more helpful.
>
> On Tue, Feb 18, 2020 at 5:30 PM <gtkmm-list-requ...@gnome.org> wrote:
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>> 1. Fetching gtkmm custom css style properties (Gowthami S D)
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>> ----------------------------------------------------------------------
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>> Message: 1
>> Date: Mon, 17 Feb 2020 17:42:52 +0530
>> From: Gowthami S D <gowthami...@skanray.com>
>> To: gtkmm-list@gnome.org
>> Subject: Fetching gtkmm custom css style properties
>> Message-ID:
>> <CAJ3regXZSNXAT9Lm5sTQmZnM9FfP7udKcdmydbEHMx=
>> cdvs...@mail.gmail.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>> Hello Sir,
>> Can you send me the sample examples for the get_style_properties_value API
>> in gtkmm3.0.I had done R and D about this API but I got only the class
>> references and one line explanation.
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> Thanks and Regards
>> Gowthami
>>
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