reworks text viewer plugin. (FS#11209)

new text viewer plugin: text_viewer.rock.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26571 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 119 insertions, 0 deletions

diff --git a/apps/plugins/text_viewer/tv_preferences.c b/apps/plugins/text_viewer/tv_preferences.c
new file mode 100644
index 0000000000..cd3560db93
--- /dev/null
+++ b/apps/plugins/text_viewer/tv_preferences.c
@@ -0,0 +1,119 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 Gilles Roux
+ *               2003 Garrett Derner
+ *               2010 Yoshihisa Uchida
+ *
+ * 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 "plugin.h"
+#include "tv_preferences.h"
+
+static struct tv_preferences prefs;
+static bool is_initialized = false;
+static int listner_count = 0;
+
+#define TV_MAX_LISTNERS 4
+static void (*listners[TV_MAX_LISTNERS])(const struct tv_preferences *oldp);
+
+static void tv_notify_change_preferences(const struct tv_preferences *oldp,
+                                         const struct tv_preferences *newp)
+{
+    int i;
+
+    /*
+     * the following items do not check.
+     *   - alignment
+     *   - scroll_mode
+     *   - page_mode
+     *   - font
+     *   - autoscroll_speed
+     */
+    if ((oldp == NULL)                                 ||
+        (oldp->word_mode      != newp->word_mode)      ||
+        (oldp->line_mode      != newp->line_mode)      ||
+        (oldp->view_mode      != newp->view_mode)      ||
+        (oldp->scrollbar_mode != newp->scrollbar_mode) ||
+        (oldp->encoding       != newp->encoding)       ||
+#ifdef HAVE_LCD_BITMAP
+        (oldp->header_mode    != newp->header_mode)    ||
+        (oldp->footer_mode    != newp->footer_mode)    ||
+        (rb->strcmp(oldp->font_name, newp->font_name)) ||
+#endif
+        (rb->strcmp(oldp->file_name, newp->file_name)))
+    {
+        for (i = listner_count - 1; i >= 0; i--)
+            listners[i](oldp);
+    }
+}
+
+const struct tv_preferences *tv_get_preferences(void)
+{
+    return &prefs;
+}
+
+void tv_set_preferences(const struct tv_preferences *new_prefs)
+{
+    struct tv_preferences *oldp = NULL;
+    struct tv_preferences old_prefs;
+
+    if (!is_initialized)
+        is_initialized = true;
+    else
+    {
+        old_prefs = prefs;
+        oldp      = &old_prefs;
+    }
+    rb->memcpy(&prefs, new_prefs, sizeof(struct tv_preferences));
+    tv_notify_change_preferences(oldp, &prefs);
+}
+
+void tv_copy_preferences(struct tv_preferences *copy_prefs)
+{
+    rb->memcpy(copy_prefs, &prefs, sizeof(struct tv_preferences));
+}
+
+void tv_set_default_preferences(struct tv_preferences *p)
+{
+    p->word_mode = WRAP;
+    p->line_mode = NORMAL;
+    p->view_mode = NARROW;
+    p->alignment = LEFT;
+    p->scroll_mode = PAGE;
+    p->page_mode = NO_OVERLAP;
+    p->scrollbar_mode = SB_OFF;
+    rb->memset(p->font_name, 0, MAX_PATH);
+#ifdef HAVE_LCD_BITMAP
+    p->header_mode = HD_BOTH;
+    p->footer_mode = FT_BOTH;
+    rb->strlcpy(p->font_name, rb->global_settings->font_file, MAX_PATH);
+    p->font = rb->font_get(FONT_UI);
+#else
+    p->header_mode = HD_NONE;
+    p->footer_mode = FT_NONE;
+#endif
+    p->autoscroll_speed = 1;
+    /* Set codepage to system default */
+    p->encoding = rb->global_settings->default_codepage;
+    p->file_name[0] = '\0';
+}
+
+void tv_add_preferences_change_listner(void (*listner)(const struct tv_preferences *oldp))
+{
+    if (listner_count < TV_MAX_LISTNERS)
+        listners[listner_count++] = listner;
+}