Add Screen::drawBorder(string), duplicates DF's interfacest::drawborder()

library/include/modules/Screen.h

@@ -98,6 +98,9 @@ namespace DFHack
         /// Fills a rectangle with one pen. Possibly more efficient than a loop over paintTile.
         DFHACK_EXPORT bool fillRect(const Pen &pen, int x1, int y1, int x2, int y2);
 
+        /// Draws a standard dark gray window border with a title string
+        DFHACK_EXPORT bool drawBorder(const std::string &title);
+
         /// Wipes the screen to full black
         DFHACK_EXPORT bool clear();
 

library/modules/Screen.cpp

@@ -151,6 +151,27 @@ bool Screen::fillRect(const Pen &pen, int x1, int y1, int x2, int y2)
     return true;
 }
 
+bool Screen::drawBorder(const std::string &title)
+{
+    if (!gps) return false;
+
+    int dimx = gps->dimx, dimy = gps->dimy;
+    Pen border(0xDB, 8);
+    Pen text(0, 0, 7);
+
+    for (int x = 0; x < dimx; x++)
+    {
+        doSetTile(border, x * dimy + 0);
+        doSetTile(border, x * dimy + dimy - 1);
+    }
+    for (int y = 0; y < dimy; y++)
+    {
+        doSetTile(border, 0 * dimy + y);
+        doSetTile(border, (dimx - 1) * dimy + y);
+    }
+    return paintString(text, (dimx - title.length()) / 2, 0, title);
+}
+
 bool Screen::clear()
 {
     if (!gps) return false;