bar label position支持 insideX

bar label position支持
‘insideLeft’，‘insideRight’，‘insideTop’‘insideBottom’

doc/example/bar10.html

@@ -124,7 +124,7 @@ option = {
                     borderColor: 'tomato',
                     borderWidth: 6,
                     label : {
-                        show: true, position: 'inside'
+                        show: true, position: 'insideTop'
                     }
                 }
             },

doc/example/bar4.html

@@ -104,35 +104,35 @@ option = {
             name:'直接访问',
             type:'bar',
             stack: '总量',
-            itemStyle : { normal: {label : {show: true, position: 'inside'}}},
+            itemStyle : { normal: {label : {show: true, position: 'insideRight'}}},
             data:[320, 302, 301, 334, 390, 330, 320]
         },
         {
             name:'邮件营销',
             type:'bar',
             stack: '总量',
-            itemStyle : { normal: {label : {show: true, position: 'inside'}}},
+            itemStyle : { normal: {label : {show: true, position: 'insideRight'}}},
             data:[120, 132, 101, 134, 90, 230, 210]
         },
         {
             name:'联盟广告',
             type:'bar',
             stack: '总量',
-            itemStyle : { normal: {label : {show: true, position: 'inside'}}},
+            itemStyle : { normal: {label : {show: true, position: 'insideRight'}}},
             data:[220, 182, 191, 234, 290, 330, 310]
         },
         {
             name:'视频广告',
             type:'bar',
             stack: '总量',
-            itemStyle : { normal: {label : {show: true, position: 'inside'}}},
+            itemStyle : { normal: {label : {show: true, position: 'insideRight'}}},
             data:[150, 212, 201, 154, 190, 330, 410]
         },
         {
             name:'搜索引擎',
             type:'bar',
             stack: '总量',
-            itemStyle : { normal: {label : {show: true, position: 'inside'}}},
+            itemStyle : { normal: {label : {show: true, position: 'insideRight'}}},
             data:[820, 832, 901, 934, 1290, 1330, 1320]
         }
     ]

doc/example/bar9.html

@@ -81,7 +81,7 @@ var dataStyle = {
     normal: {
         label : {
             show: true,
-            position: 'inside',
+            position: 'insideLeft',
             formatter: '{c}%'
         }
     }

src/chart/bar.js

@@ -843,6 +843,43 @@ define(function (require) {
             barShape.highlightStyle.textColor = barShape.highlightStyle.color;
             
             barShape = this.addLabel(barShape, serie, data, name, orient);
+            if (barShape.style.textPosition == 'insideLeft'
+                || barShape.style.textPosition == 'insideRight'
+                || barShape.style.textPosition == 'insideTop'
+                || barShape.style.textPosition == 'insideBottom'
+            ) {
+                var gap = 5;
+                switch (barShape.style.textPosition) {
+                    case 'insideLeft' : 
+                        barShape.style.textX = barShape.style.x + gap;
+                        barShape.style.textY = barShape.style.y + barShape.style.height / 2;
+                        barShape.style.textAlign = 'left';
+                        barShape.style.textBaseline = 'middle';
+                        break;
+                    case 'insideRight' : 
+                        barShape.style.textX = barShape.style.x + barShape.style.width - gap;
+                        barShape.style.textY = barShape.style.y + barShape.style.height / 2;
+                        barShape.style.textAlign = 'right';
+                        barShape.style.textBaseline = 'middle';
+                        break;
+                    case 'insideTop' : 
+                        barShape.style.textX = barShape.style.x + barShape.style.width / 2;
+                        barShape.style.textY = barShape.style.y + gap / 2;
+                        barShape.style.textAlign = 'center';
+                        barShape.style.textBaseline = 'top';
+                        break;
+                    case 'insideBottom' : 
+                        barShape.style.textX = barShape.style.x + barShape.style.width / 2;
+                        barShape.style.textY = barShape.style.y + barShape.style.height - gap / 2;
+                        barShape.style.textAlign = 'center';
+                        barShape.style.textBaseline = 'bottom';
+                        break;
+                }
+                barShape.style.textPosition = 'specific';
+                barShape.style.textColor = barShape.style.textColor || '#fff';
+            }
+            
+            
 
             if (this.deepQuery([data, serie, this.option],'calculable')) {
                 this.setCalculable(barShape);