1 files changed, 70 insertions, 0 deletions
diff --git a/src/drivers/OpenGL/Fl_OpenGL_Graphics_Driver_line_style.cxx b/src/drivers/OpenGL/Fl_OpenGL_Graphics_Driver_line_style.cxx
new file mode 100644
index 000000000..c9606f95d
--- /dev/null
+++ b/src/drivers/OpenGL/Fl_OpenGL_Graphics_Driver_line_style.cxx
@@ -0,0 +1,70 @@
+//
+// "$Id$"
+//
+// Line style code for the Fast Light Tool Kit (FLTK).
+//
+// Copyright 1998-2016 by Bill Spitzak and others.
+//
+// This library is free software. Distribution and use rights are outlined in
+// the file "COPYING" which should have been included with this file.  If this
+// file is missing or damaged, see the license at:
+//
+//     http://www.fltk.org/COPYING.php
+//
+// Please report all bugs and problems on the following page:
+//
+//     http://www.fltk.org/str.php
+//
+
+#ifndef FL_CFG_GFX_OPENGL_LINE_STYLE_CXX
+#define FL_CFG_GFX_OPENGL_LINE_STYLE_CXX
+
+/**
+  \file opengl_line_style.cxx
+  \brief Line style drawing utility hiding different platforms.
+*/
+
+#include "Fl_OpenGL_Graphics_Driver.h"
+#include <FL/gl.h>
+
+extern int fl_line_width_;
+
+// OpenGL implementation does not support custom patterns
+// OpenGL implementation does not support cap and join types
+
+void Fl_OpenGL_Graphics_Driver::line_style(int style, int width, char* dashes) {
+
+  // save line width in global variable for X11 clipping
+  // FIXME: what does this code do?
+  if (width == 0) fl_line_width_ = 1;
+  else fl_line_width_ = width>0 ? width : -width;
+
+  if (width<1) width = 1;
+
+  if (style==FL_SOLID) {
+    glLineStipple(1, 0xFFFF);
+    glDisable(GL_LINE_STIPPLE);
+  } else {
+    switch (style) {
+      case FL_DASH:
+        glLineStipple(width, 0x0F0F); // ....****....****
+        break;
+      case FL_DOT:
+        glLineStipple(width, 0x5555); // .*.*.*.*.*.*.*.*
+        break;
+      case FL_DASHDOT:
+        glLineStipple(width, 0x2727); // ..*..***..*..***
+        break;
+      case FL_DASHDOTDOT:
+        glLineStipple(width, 0x5757); // .*.*.***.*.*.***
+        break;
+    }
+    glEnable(GL_LINE_STIPPLE);
+  }
+}
+
+#endif // FL_CFG_GFX_OPENGL_LINE_STYLE_CXX
+
+//
+// End of "$Id$".
+//