split used+cache up into used+shared+buffer+cache

fix #4475

Author: binarynoise

sysmonitor@orcus/files/sysmonitor@orcus/3.2/applet.js

@@ -117,6 +117,8 @@ MyApplet.prototype = {
                 ["mem_graph_width", this.on_cfg_changed_graph_width],
                 ["mem_color_0", this.on_cfg_changed_color, 1],
                 ["mem_color_1", this.on_cfg_changed_color, 1],
+                ["mem_color_2", this.on_cfg_changed_color, 1],
+                ["mem_color_3", this.on_cfg_changed_color, 1],
                 ["swap_enabled", this.on_cfg_changed_graph_enabled, 2],
                 ["swap_override_graph_width", this.on_cfg_changed_graph_width, 2],
                 ["swap_graph_width", this.on_cfg_changed_graph_width],

sysmonitor@orcus/files/sysmonitor@orcus/3.2/providers.js

@@ -71,16 +71,20 @@ MemData.prototype = {
     },
 
     getDim: function() {
-        return 2;
+        return 4;
     },
 
     getData: function() {
         GTop.glibtop_get_mem(this.gtop);
-        let used = this.gtop.used / this.gtop.total;
-        let cached = (this.gtop.buffer + this.gtop.cached) / this.gtop.total;
-        this.text = Math.round((this.gtop.used - this.gtop.cached - this.gtop.buffer) / (1024 * 1024))
-            + " / " + Math.round(this.gtop.total / (1024 * 1024)) + _(" MB");
-        return [used-cached, cached];
+        let total = this.gtop.total;
+        let cached = this.gtop.cached - this.gtop.shared;
+        let shared = this.gtop.shared ;
+        let buffer = this.gtop.buffer;
+        let used =  this.gtop.used - this.gtop.cached - this.gtop.buffer;
+        
+        this.text = Math.round((used + shared) / (1024 * 1024))
+            + " / " + Math.round(total / (1024 * 1024)) + _(" MB");
+        return [used, shared, buffer, cached].map(e => e / this.gtop.total);
     },
 
     getText: function() {

sysmonitor@orcus/files/sysmonitor@orcus/3.2/settings-schema.json

@@ -45,7 +45,7 @@
         "mem_c": {
             "type": "section",
             "title": "Colors",
-            "keys": ["mem_color_0", "mem_color_1"]
+            "keys": ["mem_color_0", "mem_color_1", "mem_color_2", "mem_color_3"]
         },
         "swap": {
             "type": "page",
@@ -247,8 +247,18 @@
         "description": "Used color"
     },
     "mem_color_1": {
+        "type": "colorchooser",
+        "default": "rgb(117,78,210)",
+        "description": "Shared color"
+    },
+    "mem_color_2": {
         "type": "colorchooser",
         "default": "rgb(52,101,164)",
+        "description": "Buffer color"
+    },
+    "mem_color_3": {
+        "type": "colorchooser",
+        "default": "rgb(220,182,48)",
         "description": "Cached color"
     },
     "swap_enabled": {