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Add GDK_DPI_SCALE env var

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This is very useful for hidpi where the dpi is scaled to make
non-dpi aware apps larger. In that case a dpi aware gtk+ using
GDK_SCALE will be getting huge fonts. You can the set GDK_DPI_SCALE
to compensate for this.
This commit is contained in:
Alexander Larsson
2013-06-20 18:43:42 +02:00
parent e8b38fedbd
commit ae43f9facb
1 changed files with 10 additions and 0 deletions
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10
gtk/gtksettings.c
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@ -2810,6 +2810,8 @@ settings_update_resolution (GtkSettings *settings)
GtkSettingsPrivate *priv = settings->priv;
gint dpi_int;
gdouble dpi;
const char *scale_env;
double scale;
g_object_get (settings,
"gtk-xft-dpi", &dpi_int,
@ -2820,6 +2822,14 @@ settings_update_resolution (GtkSettings *settings)
else
dpi = -1.;
scale_env = g_getenv ("GDK_DPI_SCALE");
if (scale_env)
{
scale = g_ascii_strtod (scale_env, NULL);
if (scale != 0 && dpi > 0)
dpi *= scale;
}
gdk_screen_set_resolution (priv->screen, dpi);
}