fix/edits to vector font handling

- don't overwrite the font path with "<builtin>" when the font file cant be found, it caused bad problems when loading files on someone elses systems when paths couldn't be found blender would silently clobber paths (tsk tsk).

- when fonts are freed their temp data is now freed too.

- assigning a new filepath to a font now refreshes the object data.

source/blender/blenkernel/BKE_font.h

@@ -73,11 +73,14 @@ typedef struct EditFont {
 
 void BKE_vfont_builtin_register(void *mem, int size);
 
+void BKE_vfont_free_data(struct VFont *vf);
 void BKE_vfont_free(struct VFont *sc); 
 void BKE_vfont_free_global_ttf(void);
 struct VFont *BKE_vfont_builtin_get(void);
 struct VFont *BKE_vfont_load(struct Main *bmain, const char *name);
-struct TmpFont *BKE_vfont_find_tmpfont(struct VFont *vfont);
+
+struct TmpFont *BKE_vfont_tmpfont_find(struct VFont *vfont);
+void            BKE_vfont_tmpfont_remove(struct VFont *vfont);
 
 struct chartrans *BKE_vfont_to_curve(struct Main *bmain, struct Scene *scene, struct Object *ob, int mode);
 

source/blender/blenkernel/intern/depsgraph.c

@@ -2846,6 +2846,18 @@ void DAG_id_tag_update(ID *id, short flag)
 				}
 			}
 		}
+		else if (idtype == ID_VF) {
+			/* this is weak still, should be done delayed as well */
+			for (ob = bmain->object.first; ob; ob = ob->id.next) {
+				if (ob->type == OB_FONT) {
+					Curve *cu = ob->data;
+
+					if (ELEM4((struct VFont *)id, cu->vfont, cu->vfontb, cu->vfonti, cu->vfontbi)) {
+						ob->recalc |= (flag & OB_RECALC_ALL);
+					}
+				}
+			}
+		}
 		else {
 			/* disable because this is called on various ID types automatically.
 			 * where printing warning is not useful. for now just ignore */

source/blender/blenkernel/intern/font.c

@@ -63,26 +63,34 @@
 static ListBase ttfdata = {NULL, NULL};
 
 /* The vfont code */
-void BKE_vfont_free(struct VFont *vf)
-{
-	if (vf == NULL) return;
 
+void BKE_vfont_free_data(struct VFont *vf)
+{
 	if (vf->data) {
 		while (vf->data->characters.first) {
 			VChar *che = vf->data->characters.first;
-			
+
 			while (che->nurbsbase.first) {
 				Nurb *nu = che->nurbsbase.first;
 				if (nu->bezt) MEM_freeN(nu->bezt);
 				BLI_freelinkN(&che->nurbsbase, nu);
 			}
-	
+
 			BLI_freelinkN(&vf->data->characters, che);
 		}
 
 		MEM_freeN(vf->data);
 		vf->data = NULL;
 	}
+
+	BKE_vfont_tmpfont_remove(vf);
+}
+
+void BKE_vfont_free(struct VFont *vf)
+{
+	if (vf == NULL) return;
+
+	BKE_vfont_free_data(vf);
 	
 	if (vf->packedfile) {
 		freePackedFile(vf->packedfile);
@@ -115,34 +123,54 @@ static PackedFile *get_builtin_packedfile(void)
 	}
 }
 
-void BKE_vfont_free_global_ttf(void)
+static void vfont_tmpfont_free(struct TmpFont *tf)
 {
-	struct TmpFont *tf;
-
-	for (tf = ttfdata.first; tf; tf = tf->next) {
-		if (tf->pf) freePackedFile(tf->pf);  /* NULL when the font file can't be found on disk */
-		tf->pf = NULL;
-		tf->vfont = NULL;
+	if (tf->pf) {
+		freePackedFile(tf->pf);  /* NULL when the font file can't be found on disk */
 	}
-	BLI_freelistN(&ttfdata);
+	MEM_freeN(tf);
 }
 
-struct TmpFont *BKE_vfont_find_tmpfont(VFont *vfont)
+void BKE_vfont_free_global_ttf(void)
+{
+	struct TmpFont *tf, *tf_next;
+
+	for (tf = ttfdata.first; tf; tf = tf_next) {
+		tf_next = tf->next;
+		vfont_tmpfont_free(tf);
+	}
+	ttfdata.first = ttfdata.last = NULL;
+}
+
+struct TmpFont *BKE_vfont_tmpfont_find(VFont *vfont)
 {
 	struct TmpFont *tmpfnt = NULL;
 	
 	if (vfont == NULL) return NULL;
 	
 	/* Try finding the font from font list */
-	tmpfnt = ttfdata.first;
-	while (tmpfnt) {
-		if (tmpfnt->vfont == vfont)
+	for (tmpfnt = ttfdata.first; tmpfnt; tmpfnt = tmpfnt->next) {
+		if (tmpfnt->vfont == vfont) {
 			break;
-		tmpfnt = tmpfnt->next;
+		}
 	}
+
 	return tmpfnt;
 }
 
+/* assumes a VFont's tmpfont can't be in the database more then once */
+void BKE_vfont_tmpfont_remove(VFont *vfont)
+{
+	struct TmpFont *tmpfnt;
+
+	tmpfnt = BKE_vfont_tmpfont_find(vfont);
+
+	if (tmpfnt) {
+		vfont_tmpfont_free(tmpfnt);
+		BLI_remlink(&ttfdata, tmpfnt);
+	}
+}
+
 static VFontData *vfont_get_data(Main *bmain, VFont *vfont)
 {
 	struct TmpFont *tmpfnt = NULL;
@@ -151,7 +179,7 @@ static VFontData *vfont_get_data(Main *bmain, VFont *vfont)
 	if (vfont == NULL) return NULL;
 	
 	/* Try finding the font from font list */
-	tmpfnt = BKE_vfont_find_tmpfont(vfont);
+	tmpfnt = BKE_vfont_tmpfont_find(vfont);
 
 	/* And then set the data */
 	if (!vfont->data) {
@@ -194,7 +222,11 @@ static VFontData *vfont_get_data(Main *bmain, VFont *vfont)
 			if (!pf) {
 				printf("Font file doesn't exist: %s\n", vfont->name);
 
+				/* DON'T DO THIS
+				 * missing file shouldn't modifty path! - campbell */
+#if 0
 				strcpy(vfont->name, FO_BUILTIN_NAME);
+#endif
 				pf = get_builtin_packedfile();
 			}
 		}

source/blender/blenlib/intern/freetypefont.c

@@ -296,7 +296,7 @@ static int objchr_to_ftvfontdata(VFont *vfont, FT_ULong charcode)
 	struct TmpFont *tf;
 
 	/* Find the correct FreeType font */
-	tf = BKE_vfont_find_tmpfont(vfont);
+	tf = BKE_vfont_tmpfont_find(vfont);
 
 	/* What, no font found. Something strange here */
 	if (!tf) return FALSE;

source/blender/makesrna/intern/rna_vfont.c

@@ -32,19 +32,37 @@
 
 #include "DNA_vfont_types.h"
 
+#include "WM_types.h"
+
+
 #ifdef RNA_RUNTIME
 
+#include "BKE_font.h"
+#include "BKE_depsgraph.h"
+#include "DNA_object_types.h"
+
+#include "WM_api.h"
+
 /* matching fnction in rna_ID.c */
 static int rna_VectorFont_filepath_editable(PointerRNA *ptr)
 {
-	VFont *vf = (VFont *)ptr->data;
+	VFont *vf = ptr->id.data;
 	if (strcmp(vf->name, FO_BUILTIN_NAME) == 0) {
 		return 0;
 	}
-
 	return 1;
 }
 
+static void rna_VectorFont_reload_update(Main *UNUSED(bmain), Scene *UNUSED(scene), PointerRNA *ptr)
+{
+	VFont *vf = ptr->id.data;
+	BKE_vfont_free_data(vf);
+
+	/* update */
+	WM_main_add_notifier(NC_GEOM | ND_DATA, NULL);
+	DAG_id_tag_update(&vf->id, OB_RECALC_OB | OB_RECALC_DATA);
+}
+
 #else
 
 void RNA_def_vfont(BlenderRNA *brna)
@@ -61,6 +79,7 @@ void RNA_def_vfont(BlenderRNA *brna)
 	RNA_def_property_string_sdna(prop, NULL, "name");
 	RNA_def_property_editable_func(prop, "rna_VectorFont_filepath_editable");
 	RNA_def_property_ui_text(prop, "File Path", "");
+	RNA_def_property_update(prop, NC_GEOM | ND_DATA, "rna_VectorFont_reload_update");
 
 	prop = RNA_def_property(srna, "packed_file", PROP_POINTER, PROP_NONE);
 	RNA_def_property_pointer_sdna(prop, NULL, "packedfile");

source/blender/windowmanager/intern/wm_files.c

@@ -380,6 +380,8 @@ void WM_read_file(bContext *C, const char *filepath, ReportList *reports)
 		/* assume automated tasks with background, don't write recent file list */
 		const int do_history = (G.background == FALSE) && (CTX_wm_manager(C)->op_undo_depth == 0);
 
+		BKE_vfont_free_global_ttf();
+
 		/* put aside screens to match with persistent windows later */
 		/* also exit screens and editors */
 		wm_window_match_init(C, &wmbase); 
@@ -489,7 +491,7 @@ int WM_read_homefile(bContext *C, ReportList *UNUSED(reports), short from_memory
 	char tstr[FILE_MAX];
 	int success = 0;
 	
-	BKE_vfont_free_global_ttf(); /* still weird... what does it here? */
+	BKE_vfont_free_global_ttf();
 		
 	G.relbase_valid = 0;
 	if (!from_memory) {