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/*
* This file is part of gitg
*
* Copyright (C) 2019 - Alberto Fanjul
*
* gitg is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* gitg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with gitg. If not, see <http://www.gnu.org/licenses/>.
*/
namespace Gitg
{
public class FontManager: Object
{
private Settings d_font_settings;
private Settings d_global_settings;
private Gtk.CssProvider css_provider;
public FontManager (Gtk.TextView text_view, bool plugin) {
if (plugin) {
d_font_settings = try_settings(Gitg.Config.APPLICATION_ID + ".preferences.interface");
d_global_settings = try_settings("org.gnome.desktop.interface");
} else {
d_font_settings = new Settings(Gitg.Config.APPLICATION_ID + ".preferences.interface");
d_global_settings = new Settings("org.gnome.desktop.interface");
}
css_provider = new Gtk.CssProvider();
if (d_font_settings != null) {
d_font_settings.changed["use-default-font"].connect((s, k) => {
update_font_settings();
});
d_font_settings.changed["monospace-font-name"].connect((s, k) => {
update_font_settings();
});
}
if (d_global_settings != null) {
d_global_settings.changed["monospace-font-name"].connect((s, k) => {
update_font_settings();
});
}
text_view.get_style_context().add_provider(css_provider, Gtk.STYLE_PROVIDER_PRIORITY_SETTINGS);
update_font_settings();
}
private Settings? try_settings(string schema_id)
{
var source = SettingsSchemaSource.get_default();
if (source == null)
{
return null;
}
if (source.lookup(schema_id, true) != null)
{
return new Settings(schema_id);
}
return null;
}
private string pango_font_description_to_css(Pango.FontDescription fd)
{
string font_to_css = "";
var family = fd.get_family();
font_to_css += @"font-family:\"$family\";";
var style = fd.get_style();
var style_txt = "";
switch(style)
{
case Pango.Style.NORMAL:
style_txt = "normal";
break;
case Pango.Style.OBLIQUE:
style_txt = "oblique";
break;
case Pango.Style.ITALIC:
style_txt = "italic";
break;
default:
break;
}
if (style_txt != "")
font_to_css += @"font-style:$style_txt;";
var variant = fd.get_variant();
var variant_txt = "";
switch(variant)
{
case Pango.Variant.NORMAL:
variant_txt = "normal";
break;
case Pango.Variant.SMALL_CAPS:
variant_txt = "small-caps";
break;
default:
break;
}
if (variant_txt != "")
font_to_css += @"font-variant:$variant_txt;";
var weight = fd.get_weight();
var weight_txt = "";
switch(weight)
{
case Pango.Weight.SEMILIGHT:
case Pango.Weight.NORMAL:
weight_txt = "normal";
break;
case Pango.Weight.BOLD:
weight_txt = "bold";
break;
default:
weight_txt = @"$((weight / 100) * 100)";
break;
}
if (weight_txt != "")
font_to_css += @"font-weight:$weight_txt;";
var stretch = fd.get_stretch();
var stretch_txt = "";
switch(stretch)
{
case Pango.Stretch.ULTRA_CONDENSED:
stretch_txt = "ultra-condensed";
break;
case Pango.Stretch.CONDENSED:
stretch_txt = "condensed";
break;
case Pango.Stretch.SEMI_CONDENSED:
stretch_txt = "semi-condensed";
break;
case Pango.Stretch.NORMAL:
stretch_txt = "normal";
break;
case Pango.Stretch.SEMI_EXPANDED:
stretch_txt = "semi-expanded";
break;
case Pango.Stretch.EXPANDED:
stretch_txt = "expanded";
break;
case Pango.Stretch.EXTRA_EXPANDED:
stretch_txt = "extra-expanded";
break;
case Pango.Stretch.ULTRA_EXPANDED:
stretch_txt = "ultra-expanded";
break;
default:
break;
}
if (stretch_txt != "")
font_to_css += @"font-stretch:$stretch_txt;";
var size_txt = (fd.get_size()/Pango.SCALE).to_string();
font_to_css += @"font-size:$(size_txt)pt;";
return font_to_css;
}
private void update_font_settings()
{
var fname = d_font_settings.get_string("monospace-font-name");
if (d_font_settings.get_boolean("use-default-font") && d_global_settings != null) {
fname = d_global_settings.get_string("monospace-font-name");
}
var font_desc = Pango.FontDescription.from_string(fname);
var css = "textview { %s }".printf(pango_font_description_to_css(font_desc));
try
{
css_provider.load_from_data(css);
}
catch(Error e)
{
warning("Error applying font: %s", e.message);
}
}
}
}
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