[sw] Add svpaint.

Author: egorpugin

src/viewer/scrollview.h

@@ -89,7 +89,7 @@ struct SVEvent {
 // The SVEventHandler class is used for Event handling: If you register your
 // class as SVEventHandler to a ScrollView Window, the SVEventHandler will be
 // called whenever an appropriate event occurs.
-class SVEventHandler {
+class TESS_API SVEventHandler {
 public:
   virtual ~SVEventHandler();
 

src/viewer/svmnode.h

@@ -35,7 +35,7 @@ namespace tesseract {
 
 class ScrollView;
 
-class SVMenuNode {
+class TESS_API SVMenuNode {
 public:
   // Creating the (empty) root menu node.
   SVMenuNode();

sw.cpp

@@ -15,14 +15,10 @@ void build(Solution &s)
 
         libtesseract += "TESS_API"_api;
         libtesseract += "include/.*"_rr;
-        libtesseract += "src/.*"_rr;
+        libtesseract += "src/.+/.*"_rr;
         libtesseract -= "src/lstm/.*\\.cc"_rr;
         libtesseract -= "src/training/.*"_rr;
 
-        libtesseract -=
-            "src/tesseract.cpp",
-            "src/svpaint.cpp";
-
         libtesseract.Public += "include"_idir;
         libtesseract.Protected +=
             "src/opencl"_id,
@@ -121,6 +117,13 @@ void build(Solution &s)
         tesseract += libtesseract;
     }
 
+    auto &svpaint = tess.addExecutable("svpaint");
+    {
+        svpaint += cppstd;
+        svpaint += "src/svpaint.cpp";
+        svpaint += libtesseract;
+    }
+
     auto &training = tess.addDirectory("training");
 
     //