Add support for HEX-defined colors

engine/src/main/java/com/bartlomiejpluta/base/engine/gui/render/NanoVGColor.java

@@ -29,6 +29,21 @@ public class NanoVGColor implements Color, Disposable {
       color.a(alpha);
    }
 
+   @Override
+   public void setRGB(int hex) {
+      color.r(((hex & 0xFF0000) >> 2 * 8) / 255f);
+      color.g(((hex & 0x00FF00) >> 8) / 255f);
+      color.b(((hex & 0x0000FF)) / 255f);
+   }
+
+   @Override
+   public void setRGBA(long hex) {
+      color.r(((hex & 0xFF000000L) >> 3 * 8) / 255f);
+      color.g(((hex & 0x00FF0000L) >> 2 * 8) / 255f);
+      color.b(((hex & 0x0000FF00L) >> 8) / 255f);
+      color.a(((hex & 0x000000FFL)) / 255f);
+   }
+
    @Override
    public void setRed(float value) {
       color.r(value);
@@ -37,13 +52,11 @@ public class NanoVGColor implements Color, Disposable {
    @Override
    public void setGreen(float value) {
       color.g(value);
-
    }
 
    @Override
    public void setBlue(float value) {
       color.b(value);
-
    }
 
    @Override
@@ -51,6 +64,26 @@ public class NanoVGColor implements Color, Disposable {
       color.a(value);
    }
 
+   @Override
+   public void setRed(int value) {
+      color.r(value / 255f);
+   }
+
+   @Override
+   public void setGreen(int value) {
+      color.g(value / 255f);
+   }
+
+   @Override
+   public void setBlue(int value) {
+      color.b(value / 255f);
+   }
+
+   @Override
+   public void setAlpha(int value) {
+      color.a(value / 255f);
+   }
+
    @Override
    public float getRed() {
       return color.r();