[gitg] Show hunk on the gutter using dots

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 29df9f6a156eee74182384e27eee61fb6cf80f56
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Mon Dec 21 08:48:52 2015 +0100

    Show hunk on the gutter using dots

 libgitg/gitg-diff-view-lines-renderer.vala |   23 ++++++++++++++++++++---
 1 files changed, 20 insertions(+), 3 deletions(-)
---
diff --git a/libgitg/gitg-diff-view-lines-renderer.vala b/libgitg/gitg-diff-view-lines-renderer.vala
index bc23e7b..e69f621 100644
--- a/libgitg/gitg-diff-view-lines-renderer.vala
+++ b/libgitg/gitg-diff-view-lines-renderer.vala
@@ -35,6 +35,7 @@ class Gitg.DiffViewLinesRenderer : Gtk.SourceGutterRendererText
        {
                int start;
                int end;
+               int hunk_line;
                Ggit.DiffHunk hunk;
                string[] line_infos;
        }
@@ -84,11 +85,17 @@ class Gitg.DiffViewLinesRenderer : Gtk.SourceGutterRendererText
        protected override void query_data(Gtk.TextIter start, Gtk.TextIter end, 
Gtk.SourceGutterRendererState state)
        {
                var line = start.get_line();
+               bool is_hunk = false;
                HunkInfo? info = null;
 
                foreach (var i in d_hunks_list)
                {
-                       if (line >= i.start && line <= i.end)
+                       if (line == i.hunk_line)
+                       {
+                               is_hunk = true;
+                               break;
+                       }
+                       else if (line >= i.start && line <= i.end)
                        {
                                info = i;
                                break;
@@ -97,7 +104,14 @@ class Gitg.DiffViewLinesRenderer : Gtk.SourceGutterRendererText
 
                if (info == null || (line - info.start) >= info.line_infos.length)
                {
-                       set_text("", -1);
+                       if (is_hunk && style != Style.SYMBOL)
+                       {
+                               set_text("...", -1);
+                       }
+                       else
+                       {
+                               set_text("", -1);
+                       }
                }
                else
                {
@@ -140,10 +154,12 @@ class Gitg.DiffViewLinesRenderer : Gtk.SourceGutterRendererText
 
        private void calculate_num_digits()
        {
-               var num_digits = 0;
+               int num_digits;
 
                if (style == Style.OLD || style == Style.NEW)
                {
+                       num_digits = 3;
+
                        foreach (var info in d_hunks_list)
                        {
                                var oldn = info.hunk.get_old_start() + info.hunk.get_old_lines();
@@ -258,6 +274,7 @@ class Gitg.DiffViewLinesRenderer : Gtk.SourceGutterRendererText
 
                info.start = buffer_line_start;
                info.end = buffer_line_end;
+               info.hunk_line = buffer_line_start - 1;
                info.hunk = hunk;
                info.line_infos = precalculate_line_strings(hunk, lines);