- Added < and > options to move the timeline

- Fixed issue with wrong week numbers

lib/gantt-editor.adp

@@ -198,9 +198,11 @@ function launchGanttEditor(debug){
             { icon: gifPath+'link_add.png', tooltip: 'Add dependency', id: 'buttonAddDependency', hidden: true}, 
             { icon: gifPath+'link_break.png', tooltip: 'Break dependency', id: 'buttonBreakDependency', hidden: true}, 
             '->', 
+            { icon: gifPath+'resultset_previous.png', tooltip: 'Zoom in time axis', id: 'buttonZoomLeft'}, 
             { icon: gifPath+'zoom_in.png', tooltip: 'Zoom in time axis', id: 'buttonZoomIn'}, 
             { icon: gifPath+'zoom.png', tooltip: 'Center', id: 'buttonZoomCenter'}, 
-            { icon: gifPath+'zoom_out.png', tooltip: 'Zoom out of time axis', id: 'buttonZoomOut'}, 
+            { icon: gifPath+'zoom_out.png', tooltip: 'Zoom out of time axis', id: 'buttonZoomOut'},
+	    { icon: gifPath+'resultset_next.png', tooltip: 'Zoom in time axis', id: 'buttonZoomRight'}, 
             '->', 
             { text: 'Configuration', icon: gifPath+'wrench.png', menu: configMenu}, 
             { text: 'Help', icon: gifPath+'help.png', menu: helpMenu}

www/controller/GanttZoomController.js

@@ -54,7 +54,9 @@ Ext.define('GanttEditor.controller.GanttZoomController', {
         me.control({
             '#buttonZoomIn': { click: me.onButtonZoomIn },
             '#buttonZoomOut': { click: me.onButtonZoomOut },
-            '#buttonZoomCenter': { click: me.onButtonZoomCenter }
+            '#buttonZoomCenter': { click: me.onButtonZoomCenter },
+            '#buttonZoomLeft': { click: me.onButtonZoomLeft },
+            '#buttonZoomRight': { click: me.onButtonZoomRight }
         });
 
         // Catch scroll events
@@ -271,6 +273,62 @@ Ext.define('GanttEditor.controller.GanttZoomController', {
         if (me.debug) console.log('GanttEditor.controller.GanttZoomController.onButtonZoomOut: Finished');
     },
 
+    /**
+     * Zoom Right - The user has pressed the (<) button.
+     */
+    onButtonZoomRight: function() {
+        var me = this;
+        if (me.debug) console.log('GanttEditor.controller.GanttZoomController.onButtonZoomRight: Starting');
+
+        var ganttBarPanel = me.getGanttBarPanel();
+        var panelBox = ganttBarPanel.getBox();
+        var panelWidth = panelBox.width;
+
+        var startTime = ganttBarPanel.axisStartDate.getTime();
+        var endTime = ganttBarPanel.axisEndDate.getTime();
+
+	var diffTime = endTime - startTime;
+	startTime = startTime + (diffTime / 2.0);
+	endTime = endTime + (diffTime / 2.0);
+        ganttBarPanel.axisStartDate = new Date(startTime);
+        ganttBarPanel.axisEndDate = new Date(endTime);
+        me.getGanttBarPanel().needsRedraw = true;
+
+	// Persist changes
+	me.senchaPreferenceStore.setPreference('axisStartTime', startTime);
+	me.senchaPreferenceStore.setPreference('axisEndTime', endTime);
+
+        if (me.debug) console.log('GanttEditor.controller.GanttZoomController.onButtonZoomRight: Finished');
+    },
+
+    /**
+     * Zoom Left - The user has pressed the (<) button.
+     */
+    onButtonZoomLeft: function() {
+        var me = this;
+        if (me.debug) console.log('GanttEditor.controller.GanttZoomController.onButtonZoomLeft: Starting');
+
+        var ganttBarPanel = me.getGanttBarPanel();
+        var panelBox = ganttBarPanel.getBox();
+        var panelWidth = panelBox.width;
+
+        var startTime = ganttBarPanel.axisStartDate.getTime();
+        var endTime = ganttBarPanel.axisEndDate.getTime();
+
+	var diffTime = endTime - startTime;
+	startTime = startTime - (diffTime / 2.0);
+	endTime = endTime - (diffTime / 2.0);
+        ganttBarPanel.axisStartDate = new Date(startTime);
+        ganttBarPanel.axisEndDate = new Date(endTime);
+        me.getGanttBarPanel().needsRedraw = true;
+
+	// Persist changes
+	me.senchaPreferenceStore.setPreference('axisStartTime', startTime);
+	me.senchaPreferenceStore.setPreference('axisEndTime', endTime);
+
+        if (me.debug) console.log('GanttEditor.controller.GanttZoomController.onButtonZoomLeft: Finished');
+    },
+
     /**
      * Zoom towards a task selected by the user.
      * Set the scroll bar so that the task is shown in