add customizable options for text dialog (with using css)

data/yad.1

@@ -881,7 +881,13 @@ Show cursor in read-only mode.
 .B \-\-show-uri
 Make links in text clickable. Links opens with \fIxdg-open\fP command.
 .TP
-.B \-\-uri-color
+.B \-\-fore=\fICOLOR\fP
+Set default color for text.
+.TP
+.B \-\-back=\fICOLOR\fP
+Set default color for background.
+.TP
+.B \-\-uri-color=\fICOLOR\fP
 Set color for links. Default is \fIblue\fP.
 .TP
 .B \-\-lang=LANGUAGE
@@ -893,6 +899,7 @@ Set used theme to \fITHEME\fP. This option works only if yad builds with gtksour
 .B \-\-listen
 Listen data from stdin even if filename was specified.
 
+If \fIfontname\fP option is specified for text dialog, the description of font must be in CSS style (not in a Pango style).
 Sending FormFeed character to text dialog clears it. This symbol may be sent as \fIecho \-e '\\f'\fP.
 Pressing \fICtrl+S\fP popups the search entry in text dialog.
 

src/option.c

@@ -601,6 +601,10 @@ static GOptionEntry text_options[] = {
     N_("Set justification (left, right, center or fill)"), N_("TYPE") },
   { "margins", 0, 0, G_OPTION_ARG_INT, &options.text_data.margins,
     N_("Set text margins"), N_("SIZE") },
+  { "fore", 0, 0, G_OPTION_ARG_STRING, &options.text_data.fore,
+    N_("Use specified color for text"), N_("COLOR") },
+  { "back", 0, 0, G_OPTION_ARG_STRING, &options.text_data.back,
+    N_("Use specified color for background"), N_("COLOR") },
   { "show-cursor", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &options.text_data.hide_cursor,
     N_("Show cursor in read-only mode"), NULL },
   { "show-uri", 0, 0, G_OPTION_ARG_NONE, &options.text_data.uri,
@@ -1707,6 +1711,8 @@ yad_options_init (void)
   options.text_data.justify = GTK_JUSTIFY_LEFT;
   options.text_data.margins = 0;
   options.text_data.hide_cursor = TRUE;
+  options.text_data.fore = NULL;
+  options.text_data.back = NULL;
 #ifndef STANDALONE
   options.text_data.uri_color = g_settings_get_string (settings, "uri-color");
 #else

src/text.c

@@ -449,6 +449,30 @@ text_create_widget (GtkWidget * dlg)
   if (options.text_data.wrap)
     gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (text_view), GTK_WRAP_WORD_CHAR);
 
+  if (options.common_data.font || options.text_data.fore || options.text_data.back)
+    {
+      GtkCssProvider *provider;
+      GtkStyleContext *context;
+      GString *css;
+
+      css = g_string_new ("textview, textview text {\n");
+      if (options.common_data.font)
+        g_string_append_printf (css, " font: %s;\n", options.common_data.font);
+      if (options.text_data.fore)
+        g_string_append_printf (css, " color: %s;\n", options.text_data.fore);
+      if (options.text_data.back)
+        g_string_append_printf (css, " background-color: %s;\n", options.text_data.back);
+      g_string_append (css, "}\n");
+
+      provider = gtk_css_provider_new ();
+      gtk_css_provider_load_from_data (provider, css->str, -1, NULL);
+      context = gtk_widget_get_style_context (text_view);
+      gtk_style_context_add_provider (context, GTK_STYLE_PROVIDER (provider),
+                                      GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
+
+      g_string_free (css, TRUE);
+    }
+
 #ifdef HAVE_SOURCEVIEW
   if (options.source_data.theme)
     {

src/yad.h

@@ -439,6 +439,8 @@ typedef struct {
   gboolean hide_cursor;
   gchar *uri_color;
   gboolean formatted;
+  gchar *fore;
+  gchar *back;
 } YadTextData;
 
 #ifdef HAVE_SOURCEVIEW