1 files changed, 11 insertions, 11 deletions

diff --git a/generic/Color.c b/generic/Color.c
index 664b1e0..236b6db 100644
--- a/generic/Color.c
+++ b/generic/Color.c
@@ -448,18 +448,18 @@ InterpolateGradientColor(Tk_Window	tkwin,
 
   /*printf("pos1: %g, pos2: %g, interp_rel_pos: %g\n", pos1, pos2, interp_rel_pos);*/
   if (interp_rel_pos < gc1->control) {
-    tmp = interp_rel_pos * 100 / gc1->control;
-    rgb.red = gc1->rgb->red + (gc1->mid_rgb->red - gc1->rgb->red) * tmp / 100;
-    rgb.green = gc1->rgb->green + (gc1->mid_rgb->green - gc1->rgb->green) * tmp / 100;
-    rgb.blue = gc1->rgb->blue + (gc1->mid_rgb->blue - gc1->rgb->blue) * tmp / 100;
-    gc_interp->alpha = gc1->alpha + (gc1->mid_alpha - gc1->alpha) * tmp / 100;
+    tmp = interp_rel_pos * 100.0 / gc1->control;
+    rgb.red = (unsigned short) (gc1->rgb->red + (gc1->mid_rgb->red - gc1->rgb->red) * tmp / 100.0);
+    rgb.green = (unsigned short) (gc1->rgb->green + (gc1->mid_rgb->green - gc1->rgb->green) * tmp / 100.0);
+    rgb.blue = (unsigned short) (gc1->rgb->blue + (gc1->mid_rgb->blue - gc1->rgb->blue) * tmp / 100.0);
+    gc_interp->alpha = (unsigned char) (gc1->alpha + (gc1->mid_alpha - gc1->alpha) * tmp / 100.0);
   }
   else if (interp_rel_pos > gc1->control) {
-    tmp = (interp_rel_pos - gc1->control) * 100 / (100 - gc1->control);
-    rgb.red = gc1->mid_rgb->red + (gc2->rgb->red - gc1->mid_rgb->red)*tmp/100;
-    rgb.green = gc1->mid_rgb->green + (gc2->rgb->green - gc1->mid_rgb->green)*tmp/100;
-    rgb.blue = gc1->mid_rgb->blue + (gc2->rgb->blue - gc1->mid_rgb->blue)*tmp/100;
-    gc_interp->alpha = gc1->mid_alpha + (gc2->alpha - gc1->mid_alpha)*tmp/100;
+    tmp = (interp_rel_pos - gc1->control) * 100.0 / (100.0 - gc1->control);
+    rgb.red = (unsigned short) (gc1->mid_rgb->red + (gc2->rgb->red - gc1->mid_rgb->red)*tmp / 100.0);
+    rgb.green = (unsigned short) (gc1->mid_rgb->green + (gc2->rgb->green - gc1->mid_rgb->green)*tmp / 100.0);
+    rgb.blue = (unsigned short) (gc1->mid_rgb->blue + (gc2->rgb->blue - gc1->mid_rgb->blue)*tmp / 100.0);
+    gc_interp->alpha = (unsigned char) (gc1->mid_alpha + (gc2->alpha - gc1->mid_alpha)*tmp / 100.0);
   }
   else {
     rgb = *gc1->mid_rgb;
@@ -474,7 +474,7 @@ InterpolateGradientColor(Tk_Window	tkwin,
      */
     gc_interp->position = 0;
     if (interp_rel_pos < gc1->control) {
-      gc_interp->control = gc1->control-interp_rel_pos;
+      gc_interp->control = gc1->control - (int) interp_rel_pos;
       gc_interp->mid_rgb = Tk_GetColorByValue(tkwin, gc1->mid_rgb);
       gc_interp->mid_alpha = gc1->mid_alpha;
     }