use comphelper::rng::uniform_*_distribution everywhere

and automatically seed from time on first use

coverity#1242393 Don't call rand
coverity#1242404 Don't call rand
coverity#1242410 Don't call rand and additionally allow 0xFF as a value
coverity#1242409 Don't call rand
coverity#1242399 Don't call rand
coverity#1242372 Don't call rand
coverity#1242377 Don't call rand
coverity#1242378 Don't call rand
coverity#1242379 Don't call rand
coverity#1242382 Don't call rand
coverity#1242383 Don't call rand
coverity#1242402 Don't call rand
coverity#1242397 Don't call rand
coverity#1242390 Don't call rand
coverity#1242389 Don't call rand
coverity#1242388 Don't call rand
coverity#1242386 Don't call rand
coverity#1242384 Don't call rand
coverity#1242394 Don't call rand

Change-Id: I241feab9cb370e091fd6ccaba2af941eb95bc7cf

2 files changed, 15 insertions, 10 deletions

diff --git a/drawinglayer/source/primitive2d/polygonprimitive2d.cxx b/drawinglayer/source/primitive2d/polygonprimitive2d.cxx
index 79a5e9e10c54..4a2944be5bb0 100644
--- a/drawinglayer/source/primitive2d/polygonprimitive2d.cxx
+++ b/drawinglayer/source/primitive2d/polygonprimitive2d.cxx
@@ -25,9 +25,9 @@
 #include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
 #include <drawinglayer/geometry/viewinformation2d.hxx>
 #include <basegfx/polygon/b2dlinegeometry.hxx>
+#include <boost/math/special_functions/next.hpp>
 #include <com/sun/star/drawing/LineCap.hpp>
-
-
+#include <comphelper/random.hxx>
 
 using namespace com::sun::star;
 
@@ -212,10 +212,16 @@ namespace drawinglayer
     } // end of namespace primitive2d
 } // end of namespace drawinglayer
 
-
-
 namespace drawinglayer
 {
+    namespace tools
+    {
+        double getRandomColorRange()
+        {
+            return comphelper::rng::uniform_real_distribution(0.0, boost::math::nextafter(1.0, DBL_MAX));
+        }
+    }
+
     namespace primitive2d
     {
         Primitive2DSequence PolygonStrokePrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& /*rViewInformation*/) const
@@ -271,7 +277,7 @@ namespace drawinglayer
                         const basegfx::B2DPolyPolygon aNewPolyPolygon(aAreaPolyPolygon.getB2DPolygon(b));
                         static bool bTestByUsingRandomColor(false);
                         const basegfx::BColor aColor(bTestByUsingRandomColor
-                            ? basegfx::BColor(rand() / 32767.0, rand() / 32767.0, rand() / 32767.0)
+                            ? basegfx::BColor(tools::getRandomColorRange(), tools::getRandomColorRange(), tools::getRandomColorRange())
                             : getLineAttribute().getColor());
                         const Primitive2DReference xRef(new PolyPolygonColorPrimitive2D(aNewPolyPolygon, aColor));
                         aRetval[b] = xRef;
diff --git a/drawinglayer/source/texture/texture.cxx b/drawinglayer/source/texture/texture.cxx
index e1f8f92a3a5a..89953e624395 100644
--- a/drawinglayer/source/texture/texture.cxx
+++ b/drawinglayer/source/texture/texture.cxx
@@ -18,12 +18,11 @@
  */
 
 #include <drawinglayer/texture/texture.hxx>
+#include <drawinglayer/tools/converters.hxx>
 #include <basegfx/numeric/ftools.hxx>
 #include <basegfx/tools/gradienttools.hxx>
 #include <basegfx/matrix/b2dhommatrixtools.hxx>
 
-
-
 namespace drawinglayer
 {
     namespace texture
@@ -45,9 +44,9 @@ namespace drawinglayer
         void GeoTexSvx::modifyBColor(const basegfx::B2DPoint& /*rUV*/, basegfx::BColor& rBColor, double& /*rfOpacity*/) const
         {
             // base implementation creates random color (for testing only, may also be pure virtual)
-            rBColor.setRed((rand() & 0x7fff) / 32767.0);
-            rBColor.setGreen((rand() & 0x7fff) / 32767.0);
-            rBColor.setBlue((rand() & 0x7fff) / 32767.0);
+            rBColor.setRed(tools::getRandomColorRange());
+            rBColor.setGreen(tools::getRandomColorRange());
+            rBColor.setBlue(tools::getRandomColorRange());
         }
 
         void GeoTexSvx::modifyOpacity(const basegfx::B2DPoint& rUV, double& rfOpacity) const