Use tables and css to create the diffstat graph, fix scaling

There was no need to use image-files for the graphs, so lets drop them.
At the same time, fix scaling of the graphs so that the full width is
used only if atleast 100 LOC are changed in one of the files.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

1 files changed, 19 insertions, 2 deletions

diff --git a/cgit.css b/cgit.css
index 53c93f2..87fd00a 100644
--- a/cgit.css
+++ b/cgit.css
@@ -255,67 +255,84 @@ table.diffstat th {
         padding: 0.1em 1em 0.1em 0.1em;
         font-size: 100%;
 }
 
 table.diffstat td {
         padding: 0.2em 0.2em 0.1em 0.1em;
         font-size: 100%;
         border: none;
 }
 
 table.diffstat td span.modechange {
         padding-left: 1em;
         color: red;
 }
 
 table.diffstat td.add a {
         color: green;
 }
 
 table.diffstat td.del a {
         color: red;
 }
 
 table.diffstat td.upd a {
         color: blue;
 }
 
 table.diffstat td.graph {
         width: 75%;
         vertical-align: center;
 }
 
-table.diffstat td.graph img {
+table.diffstat td.graph table {
         border: none;
-        height: 8pt;
+}
+
+table.diffstat td.graph td {
+        padding: 0px;
+        border: 0px;
+        height: 7pt;
+}
+
+table.diffstat td.graph td.add {
+        background-color: #5c5;
+}
+
+table.diffstat td.graph td.rem {
+        background-color: #c55;
+}
+
+table.diffstat td.graph td.none {
+        background-color: none;
 }
 
 div.diffstat-summary {
         color: #888;
         padding-top: 0.5em;
 }
 
 table.diff td {
         font-family: monospace;
         white-space: pre;
 }
 
 table.diff td div.head {
         font-weight: bold;
         padding-top: 1em;
 }
 
 table.diff td div.hunk {
         color: #009;
 }
 
 table.diff td div.add {
         color: green;
 }
 
 table.diff td div.del {
         color: red;
 }
 
 .sha1 {
         font-family: courier;
         font-size: 90%;