Use the nk_font_atlas's allocator for stb_truetype memory management by default

And allow the consumer to customize by redefining STBTT_malloc/STBTT_free

Author: 2asoft

nuklear.h

@@ -5701,18 +5701,6 @@ template<typename T> struct nk_alignof{struct Big {T x; char c;}; enum {
 #define NK_ALIGNOF(t) ((char*)(&((struct {char c; t _h;}*)0)->_h) - (char*)0)
 #endif
 
-#ifdef NK_IMPLEMENTATION
-#define STB_RECT_PACK_IMPLEMENTATION
-#define STB_TRUETYPE_IMPLEMENTATION
-#endif
-
-#ifndef STBTT_malloc
-static nk_handle fictional_handle = {0};
-
-#define STBTT_malloc(x,u) nk_malloc( fictional_handle, 0, x )
-#define STBTT_free(x,u) nk_mfree( fictional_handle , x)
-#endif
-
 #endif /* NK_NUKLEAR_H_ */
 
 #ifdef NK_IMPLEMENTATION
@@ -6043,6 +6031,32 @@ NK_LIB void nk_draw_property(struct nk_command_buffer *out, const struct nk_styl
 NK_LIB void nk_do_property(nk_flags *ws, struct nk_command_buffer *out, struct nk_rect property, const char *name, struct nk_property_variant *variant, float inc_per_pixel, char *buffer, int *len, int *state, int *cursor, int *select_begin, int *select_end, const struct nk_style_property *style, enum nk_property_filter filter, struct nk_input *in, const struct nk_user_font *font, struct nk_text_edit *text_edit, enum nk_button_behavior behavior);
 NK_LIB void nk_property(struct nk_context *ctx, const char *name, struct nk_property_variant *variant, float inc_per_pixel, const enum nk_property_filter filter);
 
+#ifdef NK_INCLUDE_FONT_BAKING
+
+#define STB_RECT_PACK_IMPLEMENTATION
+#define STB_TRUETYPE_IMPLEMENTATION
+
+/* Allow consumer to define own STBTT_malloc/STBTT_free, and use the font atlas' allocator otherwise */
+#ifndef STBTT_malloc
+static void*
+nk_stbtt_malloc(nk_size size, void *user_data) {
+struct nk_allocator *alloc = (struct nk_allocator *) user_data;
+return alloc->alloc(alloc->userdata, 0, size);
+}
+
+static void
+nk_stbtt_free(void *ptr, void *user_data) {
+struct nk_allocator *alloc = (struct nk_allocator *) user_data;
+alloc->free(alloc->userdata, ptr);
+}
+
+#define STBTT_malloc(x,u) nk_stbtt_malloc(x,u)
+#define STBTT_free(x,u) nk_stbtt_free(x,u)
+
+#endif // STBTT_malloc
+
+#endif // NK_INCLUDE_FONT_BAKING
+
 #endif
 
 
@@ -16419,7 +16433,9 @@ nk_font_bake_pack(struct nk_font_baker *baker,
  /* setup font baker from temporary memory */
  for (config_iter = config_list; config_iter; config_iter = config_iter->next) {
  it = config_iter;
- do {if (!stbtt_InitFont(&baker->build[i++].info, (const unsigned char*)it->ttf_blob, 0))
+ struct stbtt_fontinfo *font_info = &baker->build[i++].info;
+ font_info->userdata = alloc;
+ do {if (!stbtt_InitFont(font_info, (const unsigned char*)it->ttf_blob, 0))
  return nk_false;
  } while ((it = it->n) != config_iter);
  }
@@ -29154,6 +29170,7 @@ nk_tooltipfv(struct nk_context *ctx, const char *fmt, va_list args)
 /// - [yy]: Minor version with non-breaking API and library changes
 /// - [zz]: Bug fix version with no direct changes to API
 ///
+/// - 2020/09/05 (4.05.0) - Use the nk_font_atlas allocator for stb_truetype memory management.
 /// - 2020/09/04 (4.04.1) - Replace every boolean int by nk_bool
 /// - 2020/09/04 (4.04.0) - Add nk_bool with NK_INCLUDE_STANDARD_BOOL
 /// - 2020/06/13 (4.03.1) - Fix nk_pool allocation sizes.

package.json

@@ -1,6 +1,6 @@
 {
  "name": "nuklear",
- "version": "4.03.1",
+ "version": "4.05.0",
  "repo": "Immediate-Mode-UI/Nuklear",
  "description": "A small ANSI C gui toolkit",
  "keywords": ["gl", "ui", "toolkit"],

src/CHANGELOG

@@ -8,6 +8,7 @@
 /// - [yy]: Minor version with non-breaking API and library changes
 /// - [zz]: Bug fix version with no direct changes to API
 ///
+/// - 2020/09/05 (4.05.0) - Use the nk_font_atlas allocator for stb_truetype memory management.
 /// - 2020/09/04 (4.04.1) - Replace every boolean int by nk_bool
 /// - 2020/09/04 (4.04.0) - Add nk_bool with NK_INCLUDE_STANDARD_BOOL
 /// - 2020/06/13 (4.03.1) - Fix nk_pool allocation sizes.

src/nuklear.h

@@ -5480,16 +5480,4 @@ template<typename T> struct nk_alignof{struct Big {T x; char c;}; enum {
 #define NK_ALIGNOF(t) ((char*)(&((struct {char c; t _h;}*)0)->_h) - (char*)0)
 #endif
 
-#ifdef NK_IMPLEMENTATION
-#define STB_RECT_PACK_IMPLEMENTATION
-#define STB_TRUETYPE_IMPLEMENTATION
-#endif
-
-#ifndef STBTT_malloc
-static nk_handle fictional_handle = {0};
-
-#define STBTT_malloc(x,u) nk_malloc( fictional_handle, 0, x )
-#define STBTT_free(x,u) nk_mfree( fictional_handle , x)
-#endif
-
 #endif /* NK_NUKLEAR_H_ */

src/nuklear_font.c

@@ -190,7 +190,9 @@ nk_font_bake_pack(struct nk_font_baker *baker,
  /* setup font baker from temporary memory */
  for (config_iter = config_list; config_iter; config_iter = config_iter->next) {
  it = config_iter;
- do {if (!stbtt_InitFont(&baker->build[i++].info, (const unsigned char*)it->ttf_blob, 0))
+ struct stbtt_fontinfo *font_info = &baker->build[i++].info;
+ font_info->userdata = alloc;
+ do {if (!stbtt_InitFont(font_info, (const unsigned char*)it->ttf_blob, 0))
  return nk_false;
  } while ((it = it->n) != config_iter);
  }

src/nuklear_internal.h

@@ -324,5 +324,31 @@ NK_LIB void nk_draw_property(struct nk_command_buffer *out, const struct nk_styl
 NK_LIB void nk_do_property(nk_flags *ws, struct nk_command_buffer *out, struct nk_rect property, const char *name, struct nk_property_variant *variant, float inc_per_pixel, char *buffer, int *len, int *state, int *cursor, int *select_begin, int *select_end, const struct nk_style_property *style, enum nk_property_filter filter, struct nk_input *in, const struct nk_user_font *font, struct nk_text_edit *text_edit, enum nk_button_behavior behavior);
 NK_LIB void nk_property(struct nk_context *ctx, const char *name, struct nk_property_variant *variant, float inc_per_pixel, const enum nk_property_filter filter);
 
+#ifdef NK_INCLUDE_FONT_BAKING
+
+#define STB_RECT_PACK_IMPLEMENTATION
+#define STB_TRUETYPE_IMPLEMENTATION
+
+/* Allow consumer to define own STBTT_malloc/STBTT_free, and use the font atlas' allocator otherwise */
+#ifndef STBTT_malloc
+static void*
+nk_stbtt_malloc(nk_size size, void *user_data) {
+struct nk_allocator *alloc = (struct nk_allocator *) user_data;
+return alloc->alloc(alloc->userdata, 0, size);
+}
+
+static void
+nk_stbtt_free(void *ptr, void *user_data) {
+struct nk_allocator *alloc = (struct nk_allocator *) user_data;
+alloc->free(alloc->userdata, ptr);
+}
+
+#define STBTT_malloc(x,u) nk_stbtt_malloc(x,u)
+#define STBTT_free(x,u) nk_stbtt_free(x,u)
+
+#endif // STBTT_malloc
+
+#endif // NK_INCLUDE_FONT_BAKING
+
 #endif