ClearLastFont in graphics (for use global fontmanagers outside graphics)

cell/model/DrawingObjects/Graphics.js

@@ -479,6 +479,12 @@ CGraphics.prototype =
         this.m_oFontManager.m_pFont = null;
     },
 
+    ClearLastFont : function()
+    {
+        this.m_oLastFont    = new AscCommon.CFontSetup();
+        this.m_oLastFont2   = null;
+    },
+
     // images
     drawImage2 : function(img,x,y,w,h,alpha,srcRect)
     {

common/Charts/charts.js

@@ -479,6 +479,14 @@ ChartPreviewManager.prototype.getChartPreviews = function(chartType) {
 				for(var i = 0; i < nStylesCount; ++i)
 					arr.push(this.createChartPreview(chartType, i));
 			}
+
+			if (Asc['editor'] && AscCommon.c_oEditorId.Spreadsheet === Asc['editor'].getEditorId()) {
+				var api_sheet = Asc['editor'];
+				var _graphics = api_sheet.wb.getWorksheet().shapeCtx;
+				if (_graphics.ClearLastFont)
+					_graphics.ClearLastFont();
+			}
+
 		}
 		var group = this.previewGroups[chartType];
 		var objectGroup = [];

word/Drawing/Graphics.js

@@ -480,6 +480,12 @@ CGraphics.prototype =
         this.m_oFontManager.m_pFont = null;
     },
 
+    ClearLastFont : function()
+    {
+        this.m_oLastFont    = new AscCommon.CFontSetup();
+        this.m_oLastFont2   = null;
+    },
+
     // images
     drawImage2 : function(img,x,y,w,h,alpha,srcRect)
     {