FS#10984 - multifont! 2 major additions:

1) seperate UI font for the remote and main displays
2) allow individual skins to load additional fonts for use in the skin (Uo to 7 extra in this first version) see CustomWPS for info on how to load a font in the skins.

Code should always use FONT_UI+screen_number to get the correct user font


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24644 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 139 insertions, 0 deletions

diff --git a/apps/gui/skin_engine/skin_fonts.c b/apps/gui/skin_engine/skin_fonts.c
new file mode 100644
index 0000000000..1d3ef84271
--- /dev/null
+++ b/apps/gui/skin_engine/skin_fonts.c
@@ -0,0 +1,139 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: skin_tokens.c 24526 2010-02-05 23:58:53Z jdgordon $
+ *
+ * Copyright (C) 2010 Jonathan Gordon
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "config.h"
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "file.h"
+#include "settings.h"
+#include "font.h"
+#include "skin_buffer.h"
+#include "skin_fonts.h"
+#define FONT_SIZE 10000
+
+
+static struct skin_font {
+    struct font font;
+    int font_id;
+    char name[MAX_PATH];
+    char *buffer;
+    int ref_count; /* how many times has this font been loaded? */
+} font_table[MAXUSERFONTS];
+
+/* need this to know if we should be closing font fd's on the next init */
+static bool first_load = true;
+
+void skin_font_init(void)
+{
+    int i;
+    for(i=0;i<MAXUSERFONTS;i++)
+    {
+        if (!first_load)
+            font_unload(font_table[i].font_id);
+        font_table[i].font_id = -1;
+        font_table[i].name[0] = '\0';
+        font_table[i].buffer = NULL;
+        font_table[i].ref_count = 0;
+    }
+}
+
+/* load a font into the skin buffer. return the font id. */
+int skin_font_load(char* font_name)
+{
+    int i;
+    struct font *pf;
+    struct skin_font *font = NULL;
+    char filename[MAX_PATH];
+    
+    if (!strcmp(font_name, global_settings.font_file))
+        return FONT_UI;
+#ifdef HAVE_REMOTE_LCD
+    if (!strcmp(font_name, global_settings.remote_font_file))
+        return FONT_UI_REMOTE;
+#endif
+    for(i=0;i<MAXUSERFONTS;i++)
+    {
+        if (font_table[i].font_id >= 0 && !strcmp(font_table[i].name, font_name))
+        {
+            font_table[i].ref_count++;
+            return font_table[i].font_id;
+        }
+        else if (!font && font_table[i].font_id == -1)
+        {
+            font = &font_table[i];
+        }
+    }
+    if (!font)
+        return -1; /* too many fonts loaded */
+    
+    pf = &font->font;
+    if (!font->buffer)
+    {
+        pf->buffer_start = skin_buffer_alloc(FONT_SIZE);
+        if (!pf->buffer_start)
+            return -1;
+        font->buffer = pf->buffer_start;
+    }
+    else
+    {
+        pf->buffer_start = font->buffer;
+    }
+    pf->buffer_size = FONT_SIZE;
+    
+    snprintf(filename, MAX_PATH, FONT_DIR "/%s.fnt", font_name);
+    strcpy(font->name, font_name);
+    
+    pf->fd = -1;
+    font->font_id = font_load(pf, filename);
+    
+    if (font->font_id < 0)
+        return -1;
+    font->ref_count = 1;    
+    
+    return font->font_id;
+}
+
+/* unload a skin font. If a font has been loaded more than once it wont actually
+ * be unloaded untill all references have been unloaded */
+void skin_font_unload(int font_id)
+{
+    int i;
+    for(i=0;i<MAXUSERFONTS;i++)
+    {
+        if (font_table[i].font_id == font_id)
+        {
+            if (--font_table[i].ref_count == 0)
+            {
+                font_unload(font_id);
+                font_table[i].font_id = -1;
+                font_table[i].name[0] = '\0';
+            }                
+            return;
+        }
+    }
+}
+    
+    
+            
+    
+