Merge pull request #709 from ryuukk/rounding

Round layout widget position to nearest 0

Author: RobLoach

src/nuklear_internal.h

@@ -118,6 +118,7 @@ NK_LIB int nk_ifloord(double x);
 NK_LIB int nk_ifloorf(float x);
 NK_LIB int nk_iceilf(float x);
 NK_LIB int nk_log10(double n);
+NK_LIB float nk_roundf(float x);
 
 /* util */
 enum {NK_DO_NOT_STOP_ON_NEW_LINE, NK_STOP_ON_NEW_LINE};

src/nuklear_layout.c

@@ -601,7 +601,7 @@ nk_layout_widget_space(struct nk_rect *bounds, const struct nk_context *ctx,
     panel_space = nk_layout_row_calculate_usable_space(&ctx->style, layout->type,
                                             layout->bounds.w, layout->row.columns);
 
-    #define NK_FRAC(x) (x - (float)(int)x) /* will be used to remove fookin gaps */
+    #define NK_FRAC(x) (x - (float)(int)nk_roundf(x)) /* will be used to remove fookin gaps */
     /* calculate the width of one item inside the current layout space */
     switch (layout->row.type) {
     case NK_LAYOUT_DYNAMIC_FIXED: {

src/nuklear_math.c

@@ -197,6 +197,11 @@ nk_log10(double n)
     if (neg) exp = -exp;
     return exp;
 }
+NK_LIB float
+nk_roundf(float x)
+{
+    return (x >= 0.0) ? nk_ifloorf(x + 0.5) : nk_iceilf(x - 0.5);
+}
 NK_API struct nk_rect
 nk_get_null_rect(void)
 {