[geary/wip/765516-gtk-widget-conversation-viewer: 84/174] Re-enable message view zoom.

[Michael Gratton <mjog src gnome org>]

commit 7ac27e4a40fc804252c4be12ebc631d84124ca7d
Author: Michael James Gratton <mike vee net>
Date:   Sun Jul 10 21:56:55 2016 +1000

    Re-enable message view zoom.

 src/client/application/geary-controller.vala       |   12 ++++----
 .../conversation-viewer/conversation-viewer.vala   |   30 ++++++++++++++++++++
 2 files changed, 36 insertions(+), 6 deletions(-)
---
diff --git a/src/client/application/geary-controller.vala b/src/client/application/geary-controller.vala
index 00fda2d..f0aa50c 100644
--- a/src/client/application/geary-controller.vala
+++ b/src/client/application/geary-controller.vala
@@ -2604,23 +2604,23 @@ public class GearyController : Geary.BaseObject {
             debug("Unable to revoke operation: %s", err.message);
         }
     }
-    
+
     private void on_zoom_in() {
-        //main_window.conversation_viewer.web_view.zoom_in();
+        this.main_window.conversation_viewer.zoom_in();
     }
 
     private void on_zoom_out() {
-        //main_window.conversation_viewer.web_view.zoom_out();
+        this.main_window.conversation_viewer.zoom_out();
     }
 
     private void on_zoom_normal() {
-        //main_window.conversation_viewer.web_view.zoom_level = 1.0f;
+        this.main_window.conversation_viewer.zoom_reset();
     }
-    
+
     private void on_search() {
         main_window.search_bar.give_search_focus();
     }
-    
+
     private void on_conversation_list() {
         main_window.conversation_list_view.grab_focus();
     }
diff --git a/src/client/conversation-viewer/conversation-viewer.vala 
b/src/client/conversation-viewer/conversation-viewer.vala
index b6e7df8..427b760 100644
--- a/src/client/conversation-viewer/conversation-viewer.vala
+++ b/src/client/conversation-viewer/conversation-viewer.vala
@@ -312,6 +312,36 @@ public class ConversationViewer : Gtk.Stack {
     }
 
     /**
+     * Increases the magnification level used for displaying messages.
+     */
+    public void zoom_in() {
+        message_view_iterator().foreach((msg_view) => {
+                msg_view.web_view.zoom_in();
+                return true;
+            });
+    }
+
+    /**
+     * Decreases the magnification level used for displaying messages.
+     */
+    public void zoom_out() {
+        message_view_iterator().foreach((msg_view) => {
+                msg_view.web_view.zoom_out();
+                return true;
+            });
+    }
+
+    /**
+     * Resets magnification level used for displaying messages to the default.
+     */
+    public void zoom_reset() {
+        message_view_iterator().foreach((msg_view) => {
+                msg_view.web_view.zoom_level = 1.0f;
+                return true;
+            });
+    }
+
+    /**
      * Sets the currently visible page of the stack.
      */
     private new void set_visible_child(Gtk.Widget widget) {