Re: gtkmm-list Digest, Vol 189, Issue 4
- From: Gowthami S D <gowthami sd skanray com>
- To: gtkmm-list gnome org
- Subject: Re: gtkmm-list Digest, Vol 189, Issue 4
- Date: Wed, 19 Feb 2020 12:03:44 +0530
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.
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.
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Today's Topics:
1. Fetching gtkmm custom css style properties (Gowthami S D)
----------------------------------------------------------------------
Message: 1
Date: Mon, 17 Feb 2020 17:42:52 +0530
From: Gowthami S D <gowthami sd skanray com>
To: gtkmm-list gnome org
Subject: Fetching gtkmm custom css style properties
Message-ID:
<CAJ3regXZSNXAT9Lm5sTQmZnM9FfP7udKcdmydbEHMx=cDvSP-w 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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