fix more compiler warnings

Author: igagis

src/agg/include/agg/agg_image_filters.h

@@ -60,7 +60,7 @@ namespace agg
                 double x = double(i) / double(image_subpixel_scale);
                 double y = filter.calc_weight(x);
                 m_weight_array[pivot + i] = 
-                m_weight_array[pivot - i] = (int16)iround(y * image_filter_scale);
+                m_weight_array[pivot - i] = (int16)iround(y * int(image_filter_scale));
             }
             unsigned end = (diameter() << image_subpixel_shift) - 1;
             m_weight_array[0] = m_weight_array[end];

src/agg/include/agg/agg_span_gradient.h

@@ -49,7 +49,7 @@ namespace agg
         enum downscale_shift_e
         {
             downscale_shift = interpolator_type::subpixel_shift - 
-                              gradient_subpixel_shift
+                              int(gradient_subpixel_shift)
         };
 
         //--------------------------------------------------------------------

src/agg/src/agg_arrowhead.cpp

@@ -66,7 +66,7 @@ namespace agg
             m_cmd[3] = path_cmd_line_to;
             m_cmd[4] = path_cmd_line_to;
             m_cmd[5] = path_cmd_line_to;
-            m_cmd[7] = path_cmd_end_poly | path_flags_close | path_flags_ccw;
+            m_cmd[7] = unsigned(path_cmd_end_poly) | unsigned(path_flags_close) | unsigned(path_flags_ccw);
             m_cmd[6] = path_cmd_stop;
             return;
         }
@@ -87,7 +87,7 @@ namespace agg
             m_cmd[1] = path_cmd_line_to;
             m_cmd[2] = path_cmd_line_to;
             m_cmd[3] = path_cmd_line_to;
-            m_cmd[4] = path_cmd_end_poly | path_flags_close | path_flags_ccw;
+            m_cmd[4] = unsigned(path_cmd_end_poly) | unsigned(path_flags_close) | unsigned(path_flags_ccw);
             m_cmd[5] = path_cmd_stop;
             return;
         }

src/agg/src/agg_rounded_rect.cpp

@@ -152,7 +152,7 @@ namespace agg
             else return path_cmd_line_to;
 
         case 8:
-            cmd = path_cmd_end_poly | path_flags_close | path_flags_ccw;
+            cmd = unsigned(path_cmd_end_poly) | unsigned(path_flags_close) | unsigned(path_flags_ccw);
             m_status++;
             break;
         }

src/agg/src/agg_vcgen_contour.cpp

@@ -152,7 +152,7 @@ namespace agg
             case end_poly:
                 if(!m_closed) return path_cmd_stop;
                 m_status = stop;
-                return path_cmd_end_poly | path_flags_close | path_flags_ccw;
+                return unsigned(path_cmd_end_poly) | unsigned(path_flags_close) | unsigned(path_flags_ccw);
 
             case stop:
                 return path_cmd_stop;

src/agg/src/agg_vcgen_dash.cpp

@@ -257,7 +257,7 @@ namespace agg
                     }else if(m_status == stop){ // if looped
                         // this is the case when the whole closed path is covered by a single continuous dash,
                         // so we need to close the dash-path
-                        cmd = path_cmd_end_poly | path_flags_close;
+                        cmd = unsigned(path_cmd_end_poly) | unsigned(path_flags_close);
                     }
                     return cmd;
                 }

src/agg/src/agg_vcgen_stroke.cpp

@@ -195,11 +195,11 @@ namespace agg
 
             case end_poly1:
                 m_status = m_prev_status;
-                return path_cmd_end_poly | path_flags_close | path_flags_ccw;
+                return unsigned(path_cmd_end_poly) | unsigned(path_flags_close) | unsigned(path_flags_ccw);
 
             case end_poly2:
                 m_status = m_prev_status;
-                return path_cmd_end_poly | path_flags_close | path_flags_cw;
+                return unsigned(path_cmd_end_poly) | unsigned(path_flags_close) | unsigned(path_flags_cw);
 
             case stop:
                 cmd = path_cmd_stop;