fix(mac scroll x reverse fix): mac scroll x reverse fix and scroll optimization

src/controllers/handler.js

@@ -63,7 +63,9 @@ export default function luckysheetHandler() {
     if(browser.mobilecheck()){
         mobileinit();
     }
-
+    
+    const os = browser.detectOS(), isMac = os=="Mac"?true:false, scrollNum = isMac?1:3;
+    
     //滚动监听
     $("#luckysheet-cell-main").scroll(function () {
         
@@ -100,41 +102,18 @@ export default function luckysheetHandler() {
         let rowscroll = 0;
 
         //一次滚动三行或三列
-        if(event.deltaX != 0){
-            let col_ed;
-            
-            if(event.deltaX < 0){
-                col_ed = col_st + 3;
-                
-                if(col_ed >= visibledatacolumn_c.length){
-                    col_ed = visibledatacolumn_c.length - 1;
-                }
-            }
-            else{
-                col_ed = col_st - 3;
-                
-                if(col_ed < 0){
-                    col_ed = 0;
-                }
-            }
-
-            colscroll = col_ed == 0 ? 0 : visibledatacolumn_c[col_ed - 1];
-
-            $("#luckysheet-scrollbar-x").scrollLeft(colscroll);
-        }
-
         if(event.deltaY != 0){
             let row_ed;
 
             if(event.deltaY < 0){
-                row_ed = row_st + 3;
+                row_ed = row_st + scrollNum;
                 
                 if(row_ed >= visibledatarow_c.length){
                     row_ed = visibledatarow_c.length - 1;
                 }
             }
             else{
-                row_ed = row_st - 3;
+                row_ed = row_st - scrollNum;
                 
                 if(row_ed < 0){
                     row_ed = 0;
@@ -145,6 +124,28 @@ export default function luckysheetHandler() {
 
             $("#luckysheet-scrollbar-y").scrollTop(rowscroll);
         }
+        else if(event.deltaX != 0){
+            let col_ed;
+            
+            if((isMac && event.deltaX >0 ) || (!isMac && event.deltaX < 0)){
+                col_ed = col_st + scrollNum;
+                
+                if(col_ed >= visibledatacolumn_c.length){
+                    col_ed = visibledatacolumn_c.length - 1;
+                }
+            }
+            else{
+                col_ed = col_st - scrollNum;
+                
+                if(col_ed < 0){
+                    col_ed = 0;
+                }
+            }
+
+            colscroll = col_ed == 0 ? 0 : visibledatacolumn_c[col_ed - 1];
+
+            $("#luckysheet-scrollbar-x").scrollLeft(colscroll);
+        }
     });
 
     $("#luckysheet-scrollbar-x").scroll(function(){

src/global/browser.js

@@ -125,6 +125,29 @@ const browser = {
         }
 
         return _this.luckysheetrefreshfixednum;
+    },
+    detectOS() {
+        var userAgent = navigator.userAgent;
+        var isWin = (navigator.platform == "Win32") || (navigator.platform == "Windows");
+        var isMac = (navigator.platform == "Mac68K") || (navigator.platform == "MacPPC") || (navigator.platform == "Macintosh") || (navigator.platform == "MacIntel");
+        if (isMac) return "Mac";
+        var isUnix = (navigator.platform == "X11") && !isWin && !isMac;
+        if (isUnix) return "Unix";
+        var isLinux = (String(navigator.platform).indexOf("Linux") > -1);
+        if (isLinux) return "Linux";
+        if (isWin) {
+            var isWin2K = userAgent.indexOf("Windows NT 5.0") > -1 || userAgent.indexOf("Windows 2000") > -1;
+            if (isWin2K) return "Win2000";
+            var isWinXP = userAgent.indexOf("Windows NT 5.1") > -1 || userAgent.indexOf("Windows XP") > -1;
+            if (isWinXP) return "WinXP";
+            var isWin2003 = userAgent.indexOf("Windows NT 5.2") > -1 || userAgent.indexOf("Windows 2003") > -1;
+            if (isWin2003) return "Win2003";
+            var isWinVista= userAgent.indexOf("Windows NT 6.0") > -1 || userAgent.indexOf("Windows Vista") > -1;
+            if (isWinVista) return "WinVista";
+            var isWin7 = userAgent.indexOf("Windows NT 6.1") > -1 || userAgent.indexOf("Windows 7") > -1;
+            if (isWin7) return "Win7";
+        }
+        return "other";
     }
 };