Cleanup: remove window_manager & editor includes from BLF

Remove the need to include the window manager & editor functions
in low level font rendering code.

- The default font size is now set when changed in the preferences.
- Flushing cache is set as a callback.

2 files changed, 23 insertions, 12 deletions

diff --git a/source/blender/blenfont/intern/blf_default.c b/source/blender/blenfont/intern/blf_default.c
index 2bac0bf8904..57eeaa6768d 100644
--- a/source/blender/blenfont/intern/blf_default.c
+++ b/source/blender/blenfont/intern/blf_default.c
@@ -29,8 +29,6 @@
 
 #include "BLF_api.h"
 
-#include "UI_interface.h"
-
 #include "blf_internal.h"
 
 /* call BLF_default_set first! */
@@ -39,12 +37,19 @@
 /* Default size and dpi, for BLF_draw_default. */
 static int global_font_default = -1;
 static int global_font_dpi = 72;
+/* Keep in sync with `UI_style_get()->widgetlabel.points` */
+static int global_font_size = 11;
 
 void BLF_default_dpi(int dpi)
 {
   global_font_dpi = dpi;
 }
 
+void BLF_default_size(int size)
+{
+  global_font_size = size;
+}
+
 void BLF_default_set(int fontid)
 {
   if ((fontid == -1) || blf_font_id_is_valid(fontid)) {
@@ -62,8 +67,7 @@ int BLF_set_default(void)
 {
   ASSERT_DEFAULT_SET;
 
-  const uiStyle *style = UI_style_get();
-  BLF_size(global_font_default, style->widgetlabel.points, global_font_dpi);
+  BLF_size(global_font_default, global_font_size, global_font_dpi);
 
   return global_font_default;
 }
@@ -71,9 +75,7 @@ int BLF_set_default(void)
 void BLF_draw_default(float x, float y, float z, const char *str, const size_t str_len)
 {
   ASSERT_DEFAULT_SET;
-
-  const uiStyle *style = UI_style_get();
-  BLF_size(global_font_default, style->widgetlabel.points, global_font_dpi);
+  BLF_size(global_font_default, global_font_size, global_font_dpi);
   BLF_position(global_font_default, x, y, z);
   BLF_draw(global_font_default, str, str_len);
 }
diff --git a/source/blender/blenfont/intern/blf_font.c b/source/blender/blenfont/intern/blf_font.c
index a2c778fcf16..d536a0b8486 100644
--- a/source/blender/blenfont/intern/blf_font.c
+++ b/source/blender/blenfont/intern/blf_font.c
@@ -50,8 +50,6 @@
 
 #include "BLF_api.h"
 
-#include "UI_interface.h"
-
 #include "GPU_batch.h"
 #include "GPU_matrix.h"
 
@@ -72,6 +70,9 @@ static FT_Library ft_lib;
 static SpinLock ft_lib_mutex;
 static SpinLock blf_glyph_cache_mutex;
 
+/* May be set to #UI_widgetbase_draw_cache_flush. */
+static void (*blf_draw_cache_flush)(void) = NULL;
+
 /* -------------------------------------------------------------------- */
 /** \name FreeType Utilities (Internal)
  * \{ */
@@ -255,10 +256,10 @@ void blf_batch_draw(void)
 
   GPU_blend(GPU_BLEND_ALPHA);
 
-#ifndef BLF_STANDALONE
   /* We need to flush widget base first to ensure correct ordering. */
-  UI_widgetbase_draw_cache_flush();
-#endif
+  if (blf_draw_cache_flush != NULL) {
+    blf_draw_cache_flush();
+  }
 
   GPUTexture *texture = blf_batch_cache_texture_load();
   GPU_vertbuf_data_len_set(g_batch.verts, g_batch.glyph_len);
@@ -1167,6 +1168,14 @@ void blf_font_exit(void)
   blf_batch_draw_exit();
 }
 
+/**
+ * Optional cache flushing function, called before #blf_batch_draw.
+ */
+void BLF_cache_flush_set_fn(void (*cache_flush_fn)(void))
+{
+  blf_draw_cache_flush = cache_flush_fn;
+}
+
 /** \} */
 
 /* -------------------------------------------------------------------- */