- Issue #64, #65

  Added `TextRangeLegacy` to allow transparent hosting on otherwise incompatible versions of N++

Author: oleg-shilo

src/NppPlugin.Host/NppPlugin.Host.csproj

@@ -10,7 +10,7 @@
     <RootNamespace>NppPlugin.Host</RootNamespace>
     <AssemblyName>NppPlugin.Host</AssemblyName>
     <OutputPath>bin\Debug\</OutputPath>
-    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
     <UpgradeBackupLocation>
@@ -27,6 +27,7 @@
     <OutputPath>bin\x86\Debug\</OutputPath>
     <PlatformTarget>x86</PlatformTarget>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DefineConstants>TRACE</DefineConstants>
@@ -36,6 +37,7 @@
     <ErrorReport>prompt</ErrorReport>
     <PlatformTarget>x86</PlatformTarget>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
     <DebugSymbols>true</DebugSymbols>
@@ -46,6 +48,7 @@
     <PlatformTarget>x64</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
     <OutputPath>bin\x64\Release\</OutputPath>
@@ -56,6 +59,7 @@
     <PlatformTarget>x64</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
     <DebugSymbols>true</DebugSymbols>
@@ -66,6 +70,7 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x86'">
     <OutputPath>bin\x86\Release\</OutputPath>
@@ -76,6 +81,7 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />

src/NppPlugin.Host/PluginInfrastructure/GatewayDomain.cs

@@ -223,6 +223,18 @@ public CharacterRange(IntPtr cpmin, IntPtr cpmax)
         public IntPtr cpMax;
     }
 
+    [StructLayout(LayoutKind.Sequential)]
+    public struct CharacterRangeLegacy
+    {
+        public CharacterRangeLegacy(int cpmin, int cpmax)
+        {
+            cpMin = cpmin; cpMax = cpmax;
+        }
+
+        public int cpMin;
+        public int cpMax;
+    }
+
     public class Cells
     {
         char[] charactersAndStyles;
@@ -235,6 +247,67 @@ public Cells(char[] charactersAndStyles)
         public char[] Value { get { return charactersAndStyles; } }
     }
 
+    public class TextRangeLegacy : IDisposable
+    {
+        Sci_TextRange _sciTextRange;
+        IntPtr _ptrSciTextRange;
+        bool _disposed = false;
+
+        public TextRangeLegacy(CharacterRangeLegacy chrRange, int stringCapacity)
+        {
+            _sciTextRange.chrg = chrRange;
+            _sciTextRange.lpstrText = Marshal.AllocHGlobal(stringCapacity);
+        }
+
+        public TextRangeLegacy(int cpmin, int cpmax, int stringCapacity)
+        {
+            _sciTextRange.chrg.cpMin = cpmin;
+            _sciTextRange.chrg.cpMax = cpmax;
+            _sciTextRange.lpstrText = Marshal.AllocHGlobal(stringCapacity);
+        }
+
+        [StructLayout(LayoutKind.Sequential)]
+        struct Sci_TextRange
+        {
+            public CharacterRangeLegacy chrg;
+            public IntPtr lpstrText;
+        }
+
+        public IntPtr NativePointer { get { _initNativeStruct(); return _ptrSciTextRange; } }
+
+        public string lpstrText { get { _readNativeStruct(); return Marshal.PtrToStringAnsi(_sciTextRange.lpstrText); } }
+
+        public CharacterRangeLegacy chrg { get { _readNativeStruct(); return _sciTextRange.chrg; } set { _sciTextRange.chrg = value; _initNativeStruct(); } }
+
+        void _initNativeStruct()
+        {
+            if (_ptrSciTextRange == IntPtr.Zero)
+                _ptrSciTextRange = Marshal.AllocHGlobal(Marshal.SizeOf(_sciTextRange));
+            Marshal.StructureToPtr(_sciTextRange, _ptrSciTextRange, false);
+        }
+
+        void _readNativeStruct()
+        {
+            if (_ptrSciTextRange != IntPtr.Zero)
+                _sciTextRange = (Sci_TextRange)Marshal.PtrToStructure(_ptrSciTextRange, typeof(Sci_TextRange));
+        }
+
+        public void Dispose()
+        {
+            if (!_disposed)
+            {
+                if (_sciTextRange.lpstrText != IntPtr.Zero) Marshal.FreeHGlobal(_sciTextRange.lpstrText);
+                if (_ptrSciTextRange != IntPtr.Zero) Marshal.FreeHGlobal(_ptrSciTextRange);
+                _disposed = true;
+            }
+        }
+
+        ~TextRangeLegacy()
+        {
+            Dispose();
+        }
+    }
+
     public class TextRange : IDisposable
     {
         Sci_TextRange _sciTextRange;

src/NppPlugin.Host/PluginInfrastructure/IScintillaGateway.cs

@@ -806,6 +806,8 @@ public interface IScintillaGateway
         /// </summary>
         int GetTextRange(TextRange tr);
 
+        int GetTextRangeLegacy(TextRangeLegacy tr);
+
         /// <summary>Draw the selection in normal style or with selection highlighted. (Scintilla feature 2163)</summary>
         void HideSelection(bool normal);
 

src/NppPlugin.Host/PluginInfrastructure/NppPluginNETBase.cs

@@ -31,6 +31,16 @@ public partial class PluginBase
         public static NppData nppData;
         public static FuncItems _funcItems = new FuncItems();
 
+        static public int[] GetNppVersion()
+        {
+            IntPtr version = Win32.SendMessage(Editor.Handle, (uint)NppMsg.NPPM_GETNPPVERSION, 0, 0);
+
+            int major = unchecked((short)((long)version >> 16));
+            int minor = unchecked((short)(long)version);
+
+            return new[] { major, minor };
+        }
+
         public static void SetCommand(int index, string commandName, NppFuncItemDelegate functionPointer)
         {
             SetCommand(index, commandName, functionPointer, new ShortcutKey(), false);

src/NppPlugin.Host/PluginInfrastructure/ScintillaGateway.cs

@@ -1652,6 +1652,12 @@ public int GetTextRange(TextRange tr)
             return (int)res;
         }
 
+        public int GetTextRangeLegacy(TextRangeLegacy tr)
+        {
+            IntPtr res = Win32.SendMessage(scintilla, SciMsg.SCI_GETTEXTRANGE, Unused, tr.NativePointer);
+            return (int)res;
+        }
+
         /// <summary>Draw the selection in normal style or with selection highlighted. (Scintilla feature 2163)</summary>
         public void HideSelection(bool normal)
         {

src/NppPlugin.Host/Properties/AssemblyInfo.cs

@@ -32,5 +32,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.2.0")]
-[assembly: AssemblyFileVersion("1.0.2.0")]
+[assembly: AssemblyVersion("1.0.3.0")]
+[assembly: AssemblyFileVersion("1.0.3.0")]