Display RGB hex instead of HSV

client/src/main.c

@@ -97,12 +97,45 @@ uint32_t add_hex_region(ClientContext* context) {
 
 #define COLOR_PICK_CONTAINER_ID 0x03
 
-void rgb_string_set(ClientContext* context, float r, float g, float b) {
+void hsv_to_rgb(vec3 hsv, vec3 rgb) {
+  float C = hsv[1] * hsv[2];
+  float H = hsv[0]*6;
+  float X = C * (1 - fabs((H - 2 * floor( H / 2 )) - 1));
+  vec4 temp = {0, 0, 0, 0};
+  if(0 <= H && H <= 1) {
+    temp[0] = C;
+    temp[1] = X;
+  } else if(1 <= H && H  <= 2) {
+    temp[0] = X;
+    temp[1] = C;
+  } else if(2 <= H && H <= 3) {
+    temp[1] = C;
+    temp[2] = X;
+  } else if(3 <= H && H <= 4) {
+    temp[1] = X;
+    temp[2] = C;
+  } else if(4 <= H && H <= 5) {
+    temp[0] = X;
+    temp[2] = C;
+  } else if(5 <= H && H <= 6) {
+    temp[0] = C;
+    temp[2] = X;
+  }
+
+  float m = hsv[2] - C;
+   rgb[0] = temp[0] + m;
+   rgb[1] = temp[1] + m;
+   rgb[2] = temp[2] + m;
+}
+
+void rgb_string_set(ClientContext* context, vec3 hsv) {
+  vec3 rgb;
+  hsv_to_rgb(hsv, rgb);
   char temp[10];
   snprintf(temp, 10, "#%02x%02x%02x",
-      (uint)(r*255),
-      (uint)(g*255),
-      (uint)(b*255));
+      (uint)(rgb[0]*255),
+      (uint)(rgb[1]*255),
+      (uint)(rgb[2]*255));
   update_ui_string(temp, COLOR_PICK_CONTAINER_ID, 0, 0, context->ui, context->render);
 }
 
@@ -157,7 +190,7 @@ void sv_square_pick(ClientContext* context, float s, float v) {
       4*sizeof(vec4),
       context->render);
 
-  rgb_string_set(context, select->color[0][0], select->color[0][1], select->color[0][2]);
+  rgb_string_set(context, select->color[0]);
 }
 
 void sv_square_button_callback(void* ptr, float x, float y, int button, int action, int mods) {
@@ -216,7 +249,7 @@ void hue_bar_set(ClientContext* context, float y) {
       4*sizeof(vec4),
       context->render);
 
-  rgb_string_set(context, select->color[0][0], select->color[0][1], select->color[0][2]);
+  rgb_string_set(context, select->color[0]);
 }
 
 void hue_bar_scroll_callback(void* ptr, double x, double y) {