From a398c2846aa86650aa386a68cb51929477b6aa23 Mon Sep 17 00:00:00 2001
From: Jonathan Gordon <rockbox@jdgordon.info>
Date: Mon, 21 Jun 2010 06:04:19 +0000
Subject: Touchregion support for the Base Skin and FM Skins. display obviously
 needs to be in stylus mode for this to work. Just about all screens should be
 mostly useable if your sbs has the next/prev/select/cancel/menu regions
 defined. Plenty of room to add new action abilities if they are wanted.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27004 a1c6a512-1295-4272-9138-f99709370657
---
 apps/gui/skin_engine/skin_engine.h       |   3 +-
 apps/gui/skin_engine/skin_touchsupport.c | 116 +++++++++++++++++++++++++++++++
 2 files changed, 118 insertions(+), 1 deletion(-)
 create mode 100644 apps/gui/skin_engine/skin_touchsupport.c

(limited to 'apps/gui/skin_engine')

diff --git a/apps/gui/skin_engine/skin_engine.h b/apps/gui/skin_engine/skin_engine.h
index 380b854d24..69991ab587 100644
--- a/apps/gui/skin_engine/skin_engine.h
+++ b/apps/gui/skin_engine/skin_engine.h
@@ -40,7 +40,8 @@ enum skinnable_screens {
 
 
 #ifdef HAVE_TOUCHSCREEN
-int wps_get_touchaction(struct wps_data *data);
+int skin_get_touchaction(struct wps_data *data, int* edge_offset);
+void skin_disarm_touchregions(struct wps_data *data);
 #endif
 
 /* Do a update_type update of the skinned screen */
diff --git a/apps/gui/skin_engine/skin_touchsupport.c b/apps/gui/skin_engine/skin_touchsupport.c
new file mode 100644
index 0000000000..9c0cda779a
--- /dev/null
+++ b/apps/gui/skin_engine/skin_touchsupport.c
@@ -0,0 +1,116 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2009 - 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 "action.h"
+#include "skin_engine.h"
+#include "wps_internals.h"
+
+/** Disarms all touchregions. */
+void skin_disarm_touchregions(struct wps_data *data)
+{
+    struct skin_token_list *regions = data->touchregions;
+    while (regions)
+    {
+        ((struct touchregion *)regions->token->value.data)->armed = false;
+        regions = regions->next;
+    }
+}
+
+/* Get the touched action.
+ * egde_offset is a percentage value for the position of the touch
+ * inside the bar for regions which arnt WPS_TOUCHREGION_ACTION type.
+ */
+int skin_get_touchaction(struct wps_data *data, int* edge_offset)
+{
+    int returncode = ACTION_NONE;
+    short x,y;
+    short vx, vy;
+    int type = action_get_touchscreen_press(&x, &y);
+    static int last_action = ACTION_NONE;
+    struct touchregion *r;
+    bool repeated = (type == BUTTON_REPEAT);
+    bool released = (type == BUTTON_REL);
+    bool pressed = (type == BUTTON_TOUCHSCREEN);
+    struct skin_token_list *regions = data->touchregions;
+
+    while (regions)
+    {
+        r = (struct touchregion *)regions->token->value.data;
+        /* make sure this region's viewport is visible */
+        if (r->wvp->hidden_flags&VP_DRAW_HIDDEN)
+        {
+            regions = regions->next;
+            continue;
+        }
+        /* check if it's inside this viewport */
+        if (viewport_point_within_vp(&(r->wvp->vp), x, y))
+        {   /* reposition the touch inside the viewport since touchregions
+             * are relative to a preceding viewport */
+            vx = x - r->wvp->vp.x;
+            vy = y - r->wvp->vp.y;
+            /* now see if the point is inside this region */
+            if (vx >= r->x && vx < r->x+r->width &&
+                vy >= r->y && vy < r->y+r->height)
+            {
+                /* reposition the touch within the area */
+                vx -= r->x;
+                vy -= r->y;
+                
+
+                switch(r->type)
+                {
+                    case WPS_TOUCHREGION_ACTION:
+                        if (r->armed && ((repeated && r->repeat) || (released && !r->repeat)))
+                        {
+                            last_action = r->action;
+                            returncode = r->action;
+                        }
+                        if (pressed)
+                            r->armed = true;
+                        break;
+                    default:
+                        if (edge_offset)
+                        {
+                            if(r->width > r->height)
+                                *edge_offset = vx*100/r->width;
+                            else
+                                *edge_offset = vy*100/r->height;
+                        }
+                        returncode = r->type;
+                        break;
+                }
+            }
+        }
+        regions = regions->next;
+    }
+
+    /* On release, all regions are disarmed. */
+    if (released)
+        skin_disarm_touchregions(data);
+    
+    if (returncode != ACTION_NONE)
+        return returncode;
+        
+    last_action = ACTION_TOUCHSCREEN;
+    return ACTION_TOUCHSCREEN;
+}
-- 
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