Cleanup: split BLF default into own file

This avoids accidents using user-preferences in the main BLF API,
which could cause preferences to be used unintentionally
(such as stamping into renders or creating generated images).

As well as uses of BLF when preferences aren't loaded
such as animation playback.

1 files changed, 95 insertions, 0 deletions

diff --git a/source/blender/blenfont/intern/blf_default.c b/source/blender/blenfont/intern/blf_default.c
new file mode 100644
index 00000000000..bd06f14800c
--- /dev/null
+++ b/source/blender/blenfont/intern/blf_default.c
@@ -0,0 +1,95 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * The Original Code is Copyright (C) 2009 Blender Foundation.
+ * All rights reserved.
+ */
+
+/** \file
+ * \ingroup blf
+ *
+ * Default API, that uses Blender's user preferences for the default size.
+ */
+
+#include <ft2build.h>
+
+#include FT_FREETYPE_H
+#include FT_GLYPH_H
+
+#include "DNA_userdef_types.h"
+
+#include "BLI_assert.h"
+
+#include "BLF_api.h"
+
+#include "UI_interface.h"
+
+#include "blf_internal.h"
+
+/* call BLF_default_set first! */
+#define ASSERT_DEFAULT_SET BLI_assert(global_font_default != -1)
+
+/* Default size and dpi, for BLF_draw_default. */
+static int global_font_default = -1;
+static int global_font_dpi = 72;
+
+void BLF_default_dpi(int dpi)
+{
+  global_font_dpi = dpi;
+}
+
+void BLF_default_set(int fontid)
+{
+  if ((fontid == -1) || blf_font_id_is_valid(fontid)) {
+    global_font_default = fontid;
+  }
+}
+
+int BLF_default(void)
+{
+  ASSERT_DEFAULT_SET;
+  return global_font_default;
+}
+
+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);
+
+  return global_font_default;
+}
+
+void BLF_draw_default(float x, float y, float z, const char *str, size_t len)
+{
+  ASSERT_DEFAULT_SET;
+
+  const uiStyle *style = UI_style_get();
+  BLF_size(global_font_default, style->widgetlabel.points, global_font_dpi);
+  BLF_position(global_font_default, x, y, z);
+  BLF_draw(global_font_default, str, len);
+}
+
+/* same as above but call 'BLF_draw_ascii' */
+void BLF_draw_default_ascii(float x, float y, float z, const char *str, size_t len)
+{
+  ASSERT_DEFAULT_SET;
+
+  const uiStyle *style = UI_style_get();
+  BLF_size(global_font_default, style->widgetlabel.points, global_font_dpi);
+  BLF_position(global_font_default, x, y, z);
+  BLF_draw_ascii(global_font_default, str, len); /* XXX, use real length */
+}