[gnome-calculator] Changed history style and added CSS classes. Bug 743499

[Robert Roth <robertroth src gnome org>]

commit 6a8edb043364af9a92e22a0ae648aab5abe4bc16
Author: Niels De Graef <nielsdegraef gmail com>
Date:   Wed Jun 8 01:18:06 2016 +0200

    Changed history style and added CSS classes. Bug 743499
    
    Signed-off-by: Niels De Graef <nielsdegraef gmail com>

 data/calculator.css   |   21 +++++++++++++++++++++
 data/history-entry.ui |   32 ++++++++++++++++++++++++++++++--
 src/math-history.vala |    4 ++--
 3 files changed, 53 insertions(+), 4 deletions(-)
---
diff --git a/data/calculator.css b/data/calculator.css
index 625cbd6..7e9f85e 100644
--- a/data/calculator.css
+++ b/data/calculator.css
@@ -22,3 +22,24 @@
 .bit-marker-label {
 }
 
+.history-entry {
+  background-color: @theme_bg_color;
+  border-bottom: 1px groove @borders;
+  font-size: 0.75em;
+  padding: 6px;
+}
+
+  .history-entry:last-child {
+    border-width: 0px;
+  }
+
+  .history-entry .equation-label {
+    /* word-spacing: 2px; Doesn't work (yet) in GTK */
+  }
+
+  .history-entry .equation-symbol {
+    font-weight: lighter;
+  }
+
+  .history-entry .answer-label {
+  }
diff --git a/data/history-entry.ui b/data/history-entry.ui
index 9c4c5f7..daed42f 100644
--- a/data/history-entry.ui
+++ b/data/history-entry.ui
@@ -14,6 +14,9 @@
             <property name="visible">True</property>
             <property name="can_focus">False</property>
             <signal name="button-press-event" handler="equation_clicked_cb" swapped="no"/>
+            <style>
+              <class name="equation-label"/>
+            </style>
             <child>
               <object class="GtkLabel" id="equation_label">
                 <property name="visible">True</property>
@@ -26,7 +29,25 @@
           <packing>
             <property name="left_attach">0</property>
             <property name="top_attach">0</property>
-            <property name="width">3</property>
+            <property name="width">4</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkLabel" id="equation_symbol">
+            <property name="label"> = </property>
+            <property name="visible">True</property>
+            <property name="can_focus">False</property>
+            <property name="events">GDK_BUTTON_PRESS_MASK | GDK_STRUCTURE_MASK</property>
+            <property name="xalign">0.0</property>
+            <property name="yalign">0.0</property>
+            <property name="max_width_chars">1</property>
+            <style>
+              <class name="equation-symbol"/>
+            </style>
+          </object>
+          <packing>
+            <property name="left_attach">4</property>
+            <property name="top_attach">0</property>
           </packing>
         </child>
         <child>
@@ -34,6 +55,9 @@
             <property name="visible">True</property>
             <property name="can_focus">False</property>
             <signal name="button-press-event" handler="answer_clicked_cb" swapped="no"/>
+            <style>
+              <class name="answer-label"/>
+            </style>
             <child>
               <object class="GtkLabel" id="answer_label">
                 <property name="visible">True</property>
@@ -47,11 +71,15 @@
             </child>
           </object>
           <packing>
-            <property name="left_attach">3</property>
+            <property name="left_attach">5</property>
             <property name="top_attach">0</property>
+            <property name="width">2</property>
           </packing>
         </child>
       </object>
     </child>
+    <style>
+      <class name="history-entry"/>
+    </style>
   </template>
 </interface>
diff --git a/src/math-history.vala b/src/math-history.vala
index 8a12637..d767f91 100644
--- a/src/math-history.vala
+++ b/src/math-history.vala
@@ -83,13 +83,13 @@ public class HistoryEntry : Gtk.ListBoxRow
         answer_label.set_tooltip_text (answer_nine_digits);
 
         equation_label.set_text (equation);
-        answer_label.set_text ("= " + answer_four_digits);
+        answer_label.set_text (answer_four_digits);
     }
 
     [GtkCallback]
     public bool answer_clicked_cb (Gtk.Widget widget, Gdk.EventButton eventbutton)
     {
-        var answer = answer_label.get_tooltip_text ();
+        var answer = answer_label.get_text ();
         if (answer != null)
             answer_clicked (answer);
         return true;