Button Driver: Add button_status support with data - allows for reading the /immediate/ value of the touchscreen

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22933 a1c6a512-1295-4272-9138-f99709370657

apps/plugin.c

@@ -668,6 +668,8 @@ static const struct plugin_api rockbox_api = {
     appsversion,
     /* new stuff at the end, sort into place next time
        the API gets incompatible */
+       
+    button_status_wdata,
 };
 
 int plugin_load(const char* plugin, const void* parameter)

apps/plugin.h

@@ -836,6 +836,8 @@ struct plugin_api {
     const char *appsversion;
     /* new stuff at the end, sort into place next time
        the API gets incompatible */
+       
+    int (*button_status_wdata)(int *pdata);
 };
 
 /* plugin header */

firmware/drivers/button.c

@@ -86,6 +86,7 @@ static int button_read(void);
 
 #ifdef HAVE_TOUCHSCREEN
 static int last_touchscreen_touch;
+static int lastdata = 0;
 #endif    
 #if defined(HAVE_HEADPHONE_DETECTION)
 static struct timeout hp_detect_timeout; /* Debouncer for headphone plug/unplug */
@@ -304,6 +305,7 @@ static void button_tick(void)
         }
     }
     lastbtn = btn & ~(BUTTON_REL | BUTTON_REPEAT);
+    lastdata = data;
 }
 
 #ifdef HAVE_ADJUSTABLE_CPU_FREQ
@@ -575,6 +577,14 @@ int button_status(void)
     return lastbtn;
 }
 
+#ifdef HAVE_BUTTON_DATA
+int button_status_wdata(int *pdata)
+{
+    *pdata = lastdata;
+    return lastbtn;
+}
+#endif
+
 void button_clear_queue(void)
 {
     queue_clear(&button_queue);

firmware/export/button.h

@@ -37,6 +37,9 @@ long button_get (bool block);
 long button_get_w_tmo(int ticks);
 intptr_t button_get_data(void);
 int button_status(void);
+#ifdef HAVE_BUTTON_DATA
+int button_status_wdata(int *pdata);
+#endif
 void button_clear_queue(void);
 #ifdef HAVE_LCD_BITMAP
 void button_set_flip(bool flip); /* turn 180 degrees */