remove nested view for pre tag

Author: ranfdev

src/draw_ctx.rs

@@ -1,4 +1,3 @@
-use crate::common::MARGIN;
 use crate::config;
 
 use glib::IsA;
@@ -90,12 +89,23 @@ impl DrawCtx {
         tag_a.set_foreground(Some("blue"));
         tag_a.set_underline(gtk::pango::Underline::Low);
 
+        let tag_pre = DrawCtx::create_tag(
+            "pre",
+            self.config
+                .fonts
+                .preformatted
+                .as_ref()
+                .unwrap_or(&config::Fonts::default_preformatted()),
+        );
+        tag_pre.set_wrap_mode(gtk::WrapMode::None);
+
         tag_table.add(&tag_h1);
         tag_table.add(&tag_h2);
         tag_table.add(&tag_h3);
         tag_table.add(&tag_q);
         tag_table.add(&tag_p);
         tag_table.add(&tag_a);
+        tag_table.add(&tag_pre);
         tag_table
     }
     pub fn create_tag(name: &str, config: &crate::config::Font) -> gtk::TextTag {
@@ -133,39 +143,14 @@ impl DrawCtx {
     }
 
     pub fn insert_preformatted(&self, text_iter: &mut gtk::TextIter, line: &str) {
-        let nested_view = {
-            let text_view = gtk::TextView::new();
-            let text_buffer = text_view.buffer();
-
-            let tag_pre = DrawCtx::create_tag(
-                "pre",
-                self.config
-                    .fonts
-                    .preformatted
-                    .as_ref()
-                    .unwrap_or(&config::Fonts::default_preformatted()),
-            );
-            tag_pre.set_wrap_mode(gtk::WrapMode::None);
-
-            text_buffer.tag_table().add(&tag_pre);
-            text_buffer.insert(&mut text_buffer.end_iter(), line);
-            text_buffer.apply_tag_by_name(
-                "pre",
-                text_buffer.iter_at_line_index(0, 0).as_ref().unwrap(),
-                &text_buffer.end_iter(),
-            );
-            text_view
-        };
-
-        let scrolled_window = gtk::ScrolledWindow::new();
-        scrolled_window.set_child(Some(&nested_view));
-        scrolled_window.set_vscrollbar_policy(gtk::PolicyType::Never);
-        self.insert_widget(text_iter, &scrolled_window);
+        let start = text_iter.offset();
+        self.text_buffer.insert(text_iter, line);
+        self.text_buffer.apply_tag_by_name(
+            "pre",
+            &self.text_buffer.iter_at_offset(start),
+            text_iter,
+        );
 
-        let text_view = self.text_view.clone();
-        self.text_view.connect_width_request_notify(move |_| {
-            scrolled_window.set_width_request(text_view.allocated_width() - MARGIN * 2)
-        });
         self.text_buffer.insert(text_iter, "\n");
     }
     pub fn insert_paragraph(&self, text_iter: &mut gtk::TextIter, line: &str) {