Add ImageLoader

BatteryWidget/BatteryWidget.csproj

@@ -45,6 +45,7 @@
   <ItemGroup>
     <Compile Include="Battery.cs" />
     <Compile Include="BatteryGraph.cs" />
+    <Compile Include="ImageLoader.cs" />
     <Compile Include="WidgetForm.cs">
       <SubType>Form</SubType>
     </Compile>
@@ -61,6 +62,7 @@
     <Compile Include="Properties\Resources.Designer.cs">
       <AutoGen>True</AutoGen>
       <DependentUpon>Resources.resx</DependentUpon>
+      <DesignTime>True</DesignTime>
     </Compile>
     <None Include="app.config" />
     <None Include="Properties\Settings.settings">
@@ -75,10 +77,14 @@
   </ItemGroup>
   <ItemGroup>
     <Content Include="icon.ico" />
+    <None Include="Resources\yellow.png" />
+    <None Include="Resources\red.png" />
+    <None Include="Resources\power.png" />
+    <None Include="Resources\green.png" />
+    <None Include="Resources\gray.png" />
+    <None Include="Resources\close.png" />
   </ItemGroup>
-  <ItemGroup>
-    <Folder Include="Resources\" />
-  </ItemGroup>
+  <ItemGroup />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.

BatteryWidget/ImageLoader.cs

@@ -0,0 +1,52 @@
+using System;
+using System.Drawing;
+using System.IO;
+using System.Resources;
+using BatteryWidget.Properties;
+
+namespace BatteryWidget {
+
+    public static class ImageLoader {
+
+        private const int IMAGES_COUNT = 5;
+        private const string PATH = "res" + Path.PathSeparator;
+
+        public static enum ImageName {
+            Gray,
+            Red,
+            Yellow,
+            Green,
+            Power
+        } 
+
+        private static Image[] cache = new Image[(int) ImageName.Power + 1];
+
+        public static Image getImage(ImageName name) {
+            int index = (int) name;
+
+            // Check cache availability
+            if (cache[index] != null) return cache[index];
+
+            // Try to load image from file
+            string resName = name.ToString().ToLower();
+            Image img = null;
+            try {
+                img = loadImage(resName);
+            } catch (Exception) {
+                ResourceManager rm = Resources.ResourceManager;
+                img = (Image) rm.GetObject(resName);
+            }
+
+            cache[index] = img;
+
+            return img;
+        }
+
+        private static Image loadImage(string name) {
+            string filename = PATH + name;
+            using (FileStream fs = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read)) {
+                return new Bitmap(fs);
+            }
+        }
+    }
+}

BatteryWidget/Properties/Resources.Designer.cs

@@ -9,8 +9,9 @@
 //------------------------------------------------------------------------------
 
 namespace BatteryWidget.Properties {
-
-
+    using System;
+    
+    
     /// <summary>
     ///   A strongly-typed resource class, for looking up localized strings, etc.
     /// </summary>
@@ -22,29 +23,29 @@ namespace BatteryWidget.Properties {
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
     internal class Resources {
-
+        
         private static global::System.Resources.ResourceManager resourceMan;
-
+        
         private static global::System.Globalization.CultureInfo resourceCulture;
-
+        
         [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
         internal Resources() {
         }
-
+        
         /// <summary>
         ///   Returns the cached ResourceManager instance used by this class.
         /// </summary>
         [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
         internal static global::System.Resources.ResourceManager ResourceManager {
             get {
-                if ((resourceMan == null)) {
+                if (object.ReferenceEquals(resourceMan, null)) {
                     global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("BatteryWidget.Properties.Resources", typeof(Resources).Assembly);
                     resourceMan = temp;
                 }
                 return resourceMan;
             }
         }
-
+        
         /// <summary>
         ///   Overrides the current thread's CurrentUICulture property for all
         ///   resource lookups using this strongly typed resource class.
@@ -58,5 +59,65 @@ namespace BatteryWidget.Properties {
                 resourceCulture = value;
             }
         }
+        
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap close {
+            get {
+                object obj = ResourceManager.GetObject("close", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap gray {
+            get {
+                object obj = ResourceManager.GetObject("gray", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap green {
+            get {
+                object obj = ResourceManager.GetObject("green", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap power {
+            get {
+                object obj = ResourceManager.GetObject("power", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap red {
+            get {
+                object obj = ResourceManager.GetObject("red", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap yellow {
+            get {
+                object obj = ResourceManager.GetObject("yellow", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
     }
 }

BatteryWidget/Properties/Resources.resx

@@ -46,7 +46,7 @@
     
     mimetype: application/x-microsoft.net.object.binary.base64
     value   : The object must be serialized with 
-            : System.Serialization.Formatters.Binary.BinaryFormatter
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
             : and then encoded with base64 encoding.
     
     mimetype: application/x-microsoft.net.object.soap.base64
@@ -60,6 +60,7 @@
             : and then encoded with base64 encoding.
     -->
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
       <xsd:complexType>
         <xsd:choice maxOccurs="unbounded">
@@ -68,9 +69,10 @@
               <xsd:sequence>
                 <xsd:element name="value" type="xsd:string" minOccurs="0" />
               </xsd:sequence>
-              <xsd:attribute name="name" type="xsd:string" />
+              <xsd:attribute name="name" use="required" type="xsd:string" />
               <xsd:attribute name="type" type="xsd:string" />
               <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
             </xsd:complexType>
           </xsd:element>
           <xsd:element name="assembly">
@@ -85,9 +87,10 @@
                 <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
                 <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
               </xsd:sequence>
-              <xsd:attribute name="name" type="xsd:string" msdata:Ordinal="1" />
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
               <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
               <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
             </xsd:complexType>
           </xsd:element>
           <xsd:element name="resheader">
@@ -114,4 +117,23 @@
   <resheader name="writer">
     <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </resheader>
+  <assembly alias="System.Windows.Forms" name="System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
+  <data name="close" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\close.png;System.Drawing.Bitmap, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
+  <data name="gray" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\gray.png;System.Drawing.Bitmap, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
+  <data name="green" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\green.png;System.Drawing.Bitmap, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
+  <data name="power" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\power.png;System.Drawing.Bitmap, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
+  <data name="red" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\red.png;System.Drawing.Bitmap, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
+  <data name="yellow" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\yellow.png;System.Drawing.Bitmap, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
 </root>