FS#8457 - convert the list drawing code to use viewports. This does not include any of the customizability which was in the patch, so unless any bugs show up users should not notice any difference.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16527 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 129 insertions, 0 deletions

diff --git a/apps/gui/charcell/list.c b/apps/gui/charcell/list.c
new file mode 100644
index 0000000000..3d699e84dd
--- /dev/null
+++ b/apps/gui/charcell/list.c
@@ -0,0 +1,129 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2007 by Jonathan Gordon
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+/* This file contains the code to draw the list widget on BITMAP LCDs. */
+
+#include "config.h"
+#include "lcd.h"
+#include "font.h"
+#include "button.h"
+#include "sprintf.h"
+#include "string.h"
+#include "settings.h"
+#include "kernel.h"
+#include "system.h"
+
+#include "list.h"
+#include "screen_access.h"
+#include "scrollbar.h"
+#include "statusbar.h"
+#include "textarea.h"
+#include "lang.h"
+#include "sound.h"
+#include "misc.h"
+#include "talk.h"
+
+void list_draw(struct screen *display, struct viewport *parent,
+               struct gui_synclist *gui_list)
+{
+    (void)parent;
+    int text_pos;
+    bool draw_icons = (gui_list->callback_get_item_icon != NULL &&
+                       global_settings.show_icons);
+    bool draw_cursor;
+    int i;
+    int lines;
+    int start, end;
+    
+    display->set_viewport(NULL);
+    lines = display->nb_lines;
+    
+    gui_textarea_clear(display);
+    start = 0;
+    end = display->nb_lines;
+    gui_list->last_displayed_start_item[display->screen_type] = 
+                                gui_list->start_item[display->screen_type];
+
+    gui_list->last_displayed_selected_item = gui_list->selected_item;
+
+    /* Adjust the position of icon, cursor, text for the list */
+    draw_cursor = true;
+    if(draw_icons)
+        text_pos = 2; /* here it's in chars */
+    else
+        text_pos = 1;
+
+    for (i = start; i < end; i++)
+    {
+        unsigned char *s;
+        char entry_buffer[MAX_PATH];
+        unsigned char *entry_name;
+        int current_item = gui_list->start_item[display->screen_type] + i;
+
+        /* When there are less items to display than the
+         * current available space on the screen, we stop*/
+        if(current_item >= gui_list->nb_items)
+            break;
+        s = gui_list->callback_get_item_name(current_item,
+                                             gui_list->data,
+                                             entry_buffer);
+        entry_name = P2STR(s);
+
+
+        if(gui_list->show_selection_marker &&
+           current_item >= gui_list->selected_item &&
+           current_item <  gui_list->selected_item + gui_list->selected_size)
+        {/* The selected item must be displayed scrolling */
+            display->puts_scroll(text_pos, i, entry_name);
+
+            if (draw_cursor)
+            {
+                screen_put_icon_with_offset(display, 0, i,
+                                           (draw_scrollbar || SHOW_LIST_TITLE)?
+                                                   SCROLLBAR_WIDTH: 0,
+                                           0, Icon_Cursor);
+            }
+        }
+        else
+        {/* normal item */
+            if(gui_list->scroll_all)
+            {
+                display->puts_scroll(text_pos, i, entry_name);
+            }
+            else
+            {
+                display->puts(text_pos, i, entry_name);
+            }
+        }
+        /* Icons display */
+        if(draw_icons)
+        {
+            enum themable_icons icon;
+            icon = gui_list->callback_get_item_icon(current_item,
+                                                    gui_list->data);
+            if(icon > Icon_NOICON)
+            {
+                screen_put_icon(display, 1, i, icon);
+            }
+        }
+    }
+
+    display->update_viewport();
+    gui_textarea_update(display);
+}