How can I retrieve gtk style context information from textview widget class without a textview widget?
Hi,
I would like to use the style information from the textview widget in another
context. I want
to retrieve the text foreground color and the background color as it would be
used in a textview widget
and use this style information for rendering inside a drawing area. I figured
out that I can modify the
style by adding a style class with gtk_style_context_add_class (), but the
textview background
color seems to be specific to the textview widget.
In the adwaita scheme css:
GtkTextView {
background-color: #f6f6f6; }
GtkTextView:backdrop {
background-color: #f6f6f6; }
Is there a way to retrieve this information of the background-color similar to
the class mechanism?
I would need the same style context as if I was in a textview widget.
Friedrich
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: How can I retrieve gtk style context information from textview widget class without a textview widget?
Hi, Le 12/06/2015 14:04, Friedrich Beckmann wrote: I would like to use the style information from the textview widget in another context. I want to retrieve the text foreground color and the background color as it would be used in a textview widget and use this style information for rendering inside a drawing area. […] […] Is there a way to retrieve this information of the background-color similar to the class mechanism? I would need the same style context as if I was in a textview widget. Don't take my words as gospel, but there's something: First, realize that you can't reliably achieve the same look as the theme by simply picking background and foreground colors: the theme might be using gradients, images and whatnot. If you want to paint it like a text view, you should probably use the GTK rendering functions, like gtk_render_background() and gtk_render_layout(). Then, if you don't have an actual GtkTextView to get the style context from, you'll need to create it yourself faking the one a true text view would have. You can probably do that relatively easily with gtk_style_context_new() and then setting an appropriate widget path with gtk_style_context_set_path() -- and possibly appropriate classes, as you already figured out. Regards, Colomban https://developer.gnome.org/gtk3/stable/GtkStyleContext.html#gtk-render-background https://developer.gnome.org/gtk3/stable/GtkStyleContext.html#gtk-render-layout https://developer.gnome.org/gtk3/stable/GtkStyleContext.html#gtk-style-context-new https://developer.gnome.org/gtk3/stable/GtkStyleContext.html#gtk-style-context-set-path ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: How can I retrieve gtk style context information from textview widget class without a textview widget?
On 15-06-12 05:04 AM, Friedrich Beckmann wrote:
Hi,
I would like to use the style information from the textview widget in another
context. I want
to retrieve the text foreground color and the background color as it would be
used in a textview widget
and use this style information for rendering inside a drawing area. I figured
out that I can modify the
style by adding a style class with gtk_style_context_add_class (), but the
textview background
color seems to be specific to the textview widget.
In the adwaita scheme css:
GtkTextView {
background-color: #f6f6f6; }
GtkTextView:backdrop {
background-color: #f6f6f6; }
Is there a way to retrieve this information of the background-color similar to
the class mechanism?
I would need the same style context as if I was in a textview widget.
Friedrich
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
I don't have a complete solution for you, but you can get the background
color from gtk_style_context_get_background_color().
For example...
GtkWidget *win = NULL;
GdkRGBA color1;
GdkRGBA color2;
GtkStyleContext *context1;
...
...
gtk_widget_show_all (win);
context1 = gtk_widget_get_style_context (win);
gtk_style_context_get_background_color(context1, GTK_STATE_NORMAL, color1);
printf(%f\n%f\n%f\n, ( color1.red ), ( color1.green), ( color1.blue));
The colors are decimal numbers between 0.0 and 1.0. To change the
background color...
color2.red = 1.0;
color2.green = 0.1;
color2.blue = 0.1;
color2.alpha = 1.0;
gtk_widget_override_background_color (win, GTK_STATE_NORMAL, color2);
jim...
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: How can I retrieve gtk style context information from textview widget class without a textview widget?
Thank you for the hint! Then, if you don't have an actual GtkTextView to get the style context from, you'll need to create it yourself faking the one a true text view would have. You can probably do that relatively easily with gtk_style_context_new() and then setting an appropriate widget path with gtk_style_context_set_path() ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
