beginings of a working touchscreen interface for the WPS. 2 new tags:

%T|x|y|width|height|action| <- setup a region (relative to the current viewport) where if pressed the "action" will be done (currently play/stop/prev/next/menu/browse work, suggestions for others to add and better names welcome)
%Tl<timeout> <- used as a conditional to say if the touchscreen was touched in the last <timeout>, use this to enable/disable button viewports or something... same syntax as other timeout tags

cabbiev2 for the mr500 has been modified to demonstrate the new tags. press the pause/play button to pause playback. press the rockbox logo to get back to the menu. pretty icons needed to make this more usable :)



git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20753 a1c6a512-1295-4272-9138-f99709370657

apps/gui/gwps-common.c

@@ -1292,6 +1292,13 @@ static const char *get_token_value(struct gui_wps *gwps,
                                           token->value.i * TIMEOUT_UNIT))
                 return "v";
             return NULL;
+        case WPS_TOKEN_LASTTOUCH:
+#ifdef HAVE_TOUCHSCREEN
+            if (TIME_BEFORE(current_tick, token->value.i * TIMEOUT_UNIT +
+                                          touchscreen_last_touch()))
+                return "t";
+#endif
+            return NULL;
 
         case WPS_TOKEN_SETTING:
         {

apps/gui/gwps.c

@@ -293,7 +293,38 @@ void gwps_draw_statusbars(void)
 {
     viewportmanager_set_statusbar(wpsbars);
 }
-
+#ifdef HAVE_TOUCHSCREEN
+static int wps_get_touchaction(struct wps_data *data)
+{
+    short x,y;
+    short vx, vy;
+    int type = action_get_touchscreen_press(&x, &y);
+    int i;
+    struct touchregion *r;
+    if (type != BUTTON_REL)
+        return ACTION_TOUCHSCREEN;
+    for (i=0; i<data->touchregion_count; i++)
+    {
+        r = &data->touchregion[i];
+        /* make sure this region's viewport is visible */
+        if (r->wvp->hidden_flags&VP_DRAW_HIDDEN)
+            continue;
+        /* reposition the touch inside the viewport */    
+        vx = x - r->wvp->vp.x;
+        vy = y - r->wvp->vp.y;
+        /* check if its inside this viewport */
+        if (vx >= 0 && vx < r->wvp->vp.x + r->wvp->vp.width &&
+            vy >= 0 && vy < r->wvp->vp.y + r->wvp->vp.height)
+        {
+            /* 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)
+                return r->action;
+        }
+    }
+    return ACTION_TOUCHSCREEN;
+}
+#endif
 /* The WPS can be left in two ways:
  *      a)  call a function, which draws over the wps. In this case, the wps
  *          will be still active (i.e. the below function didn't return)
@@ -393,6 +424,10 @@ long gui_wps_show(void)
            playlist or if using the sleep timer. */
         if (!(audio_status() & AUDIO_STATUS_PLAY))
             exit = true;
+#ifdef HAVE_TOUCHSCREEN
+        if (button == ACTION_TOUCHSCREEN)
+            button = wps_get_touchaction(gui_wps[SCREEN_MAIN].data);
+#endif
 /* The iPods/X5/M5 use a single button for the A-B mode markers,
    defined as ACTION_WPSAB_SINGLE in their config files. */
 #ifdef ACTION_WPSAB_SINGLE

apps/gui/gwps.h

@@ -88,6 +88,8 @@ struct progressbar {
 };
 #endif
 
+
+
 struct align_pos {
     char* left;
     char* center;
@@ -297,6 +299,7 @@ enum wps_token_type {
 
     /* buttons */
     WPS_TOKEN_BUTTON_VOLUME,
+    WPS_TOKEN_LASTTOUCH,
 
     /* Setting option */
     WPS_TOKEN_SETTING,
@@ -363,6 +366,17 @@ struct wps_viewport {
     char label;
 };
 
+#ifdef HAVE_TOUCHSCREEN
+struct touchregion {
+    struct wps_viewport* wvp;/* The viewport this region is in */
+    short int x;             /* x-pos */
+    short int y;             /* y-pos */
+    short int width;         /* width */
+    short int height;        /* height */
+    int action;              /* action this button will return */
+};
+#define MAX_TOUCHREGIONS    12
+#endif
 /* wps_data
    this struct holds all necessary data which describes the
    viewable content of a wps */
@@ -399,6 +413,11 @@ struct wps_data
     bool full_line_progressbar;
 #endif
 
+#ifdef HAVE_TOUCHSCREEN
+    struct touchregion touchregion[MAX_TOUCHREGIONS];
+    short touchregion_count;
+#endif
+    
 #ifdef HAVE_REMOTE_LCD
     bool remote_wps;
 #endif

apps/gui/wps_parser.c

@@ -121,7 +121,7 @@ struct wps_tag {
     unsigned char refresh_type;
     const wps_tag_parse_func parse_func;
 };
-
+static int skip_end_of_line(const char *wps_bufptr);
 /* prototypes of all special parse functions : */
 static int parse_timeout(const char *wps_bufptr,
         struct wps_token *token, struct wps_data *wps_data);
@@ -156,7 +156,18 @@ static int parse_albumart_load(const char *wps_bufptr,
 static int parse_albumart_conditional(const char *wps_bufptr,
         struct wps_token *token, struct wps_data *wps_data);
 #endif /* HAVE_ALBUMART */
-
+#ifdef HAVE_TOUCHSCREEN
+static int parse_touchregion(const char *wps_bufptr,
+        struct wps_token *token, struct wps_data *wps_data);
+#else
+static int fulline_tag_not_supported(const char *wps_bufptr,
+        struct wps_token *token, struct wps_data *wps_data)
+{
+    (void)token; (void)wps_data;
+    return skip_end_of_line(wps_bufptr);
+}
+#define parse_touchregion fulline_tag_not_supported
+#endif        
 #ifdef CONFIG_RTC
 #define WPS_RTC_REFRESH WPS_REFRESH_DYNAMIC
 #else
@@ -338,6 +349,9 @@ static const struct wps_tag all_tags[] = {
 
     { WPS_TOKEN_SETTING,                  "St",  WPS_REFRESH_DYNAMIC, parse_setting },
     
+    { WPS_TOKEN_LASTTOUCH,                "Tl",  WPS_REFRESH_DYNAMIC, parse_timeout },
+    { WPS_NO_TOKEN,                       "T",   0,    parse_touchregion      },
+    
     { WPS_TOKEN_UNKNOWN,                  "",    0, NULL }
     /* the array MUST end with an empty string (first char is \0) */
 };
@@ -1142,6 +1156,70 @@ static int parse_albumart_conditional(const char *wps_bufptr,
 };
 #endif /* HAVE_ALBUMART */
 
+#ifdef HAVE_TOUCHSCREEN
+   
+struct touchaction {char* s; int action;};
+static struct touchaction touchactions[] = {
+    {"play", ACTION_WPS_PLAY }, {"stop", ACTION_WPS_STOP },
+    {"prev", ACTION_WPS_SKIPPREV }, {"next", ACTION_WPS_SKIPNEXT },
+    {"menu", ACTION_WPS_MENU }, {"browse", ACTION_WPS_BROWSE }
+};
+static int parse_touchregion(const char *wps_bufptr,
+        struct wps_token *token, struct wps_data *wps_data)
+{
+    (void)token;
+    unsigned i;
+    struct touchregion *region;
+    const char *ptr = wps_bufptr;
+    const char *action;
+    int x,y,w,h;
+    
+    /* format: %T|x|y|width|height|action|
+     * action is one of:
+     * play  -  play/pause playback
+     * stop  -  stop playback, exit the wps
+     * prev  -  prev track
+     * next  -  next track
+     * ffwd
+     * rwd
+     * menu  -  go back to the main menu
+     * browse - go back to the file/db browser
+    */
+
+    if ((wps_data->touchregion_count +1 >= MAX_TOUCHREGIONS) || (*ptr != '|'))
+        return WPS_ERROR_INVALID_PARAM;
+    ptr++;
+
+    if (!(ptr = parse_list("dddds", NULL, '|', ptr, &x, &y, &w, &h, &action)))
+        return WPS_ERROR_INVALID_PARAM;
+
+    /* Check there is a terminating | */
+    if (*ptr != '|')
+        return WPS_ERROR_INVALID_PARAM;
+        
+    /* should probably do some bounds checking here with the viewport... but later */
+    region = &wps_data->touchregion[wps_data->touchregion_count];
+    region->action = ACTION_NONE;
+    region->x = x;
+    region->y = y;
+    region->width = w;
+    region->height = h;
+    region->wvp = &wps_data->viewports[wps_data->num_viewports];
+    i = 0;
+    while ((region->action == ACTION_NONE) && 
+            (i < sizeof(touchactions)/sizeof(*touchactions)))
+    {
+        if (!strncmp(touchactions[i].s, action, strlen(touchactions[i].s)))
+            region->action = touchactions[i].action;
+        i++;
+    }
+    if (region->action == ACTION_NONE)
+        return WPS_ERROR_INVALID_PARAM;
+    wps_data->touchregion_count++;
+    return skip_end_of_line(wps_bufptr); 
+}               
+#endif        
+
 /* Parse a generic token from the given string. Return the length read */
 static int parse_token(const char *wps_bufptr, struct wps_data *wps_data)
 {

firmware/drivers/button.c

@@ -81,6 +81,9 @@ static int button_read(int *data);
 static int button_read(void);
 #endif
 
+#ifdef HAVE_TOUCHSCREEN
+    int last_touchscreen_touch;
+#endif    
 #if defined(HAVE_HEADPHONE_DETECTION)
 static struct timeout hp_detect_timeout; /* Debouncer for headphone plug/unplug */
 /* This callback can be used for many different functions if needed -
@@ -406,7 +409,9 @@ void button_init(void)
     remote_filter_first_keypress = false;
 #endif    
 #endif
-
+#ifdef HAVE_TOUCHSCREEN
+    last_touchscreen_touch = 0xffff;
+#endif    
     /* Start polling last */
     tick_add_task(button_tick);
 }
@@ -522,7 +527,10 @@ static int button_read(void)
     if (btn && flipped)
         btn = button_flip(btn); /* swap upside down */
 #endif
-
+#ifdef HAVE_TOUCHSCREEN
+    if (btn & BUTTON_TOUCHSCREEN)
+        last_touchscreen_touch = current_tick;
+#endif        
     /* Filter the button status. It is only accepted if we get the same
        status twice in a row. */
 #ifndef HAVE_TOUCHSCREEN
@@ -536,7 +544,6 @@ static int button_read(void)
     return retval;
 }
 
-
 int button_status(void)
 {
     return lastbtn;
@@ -547,6 +554,12 @@ void button_clear_queue(void)
     queue_clear(&button_queue);
 }
 
+#ifdef HAVE_TOUCHSCREEN
+int touchscreen_last_touch(void)
+{
+    return last_touchscreen_touch;
+}
+#endif
 #endif /* SIMULATOR */
 
 #ifdef HAVE_WHEEL_ACCELERATION

firmware/export/button.h

@@ -68,6 +68,8 @@ int button_apply_acceleration(const unsigned int data);
 #define BUTTON_TOUCHSCREEN 0x08000000
 
 #ifdef HAVE_TOUCHSCREEN
+int touchscreen_last_touch(void);
+
 #if (!defined(BUTTON_TOPLEFT) || !defined(BUTTON_TOPMIDDLE) \
  || !defined(BUTTON_TOPRIGHT) || !defined(BUTTON_MIDLEFT) \
  || !defined(BUTTON_CENTER) || !defined(BUTTON_MIDRIGHT) \

uisimulator/sdl/button.c

@@ -36,6 +36,7 @@ static intptr_t button_data; /* data value from last message dequeued */
 #ifdef HAVE_TOUCHSCREEN
 #include "touchscreen.h"
 static int mouse_coords = 0;
+static int last_touchscreen_touch = 0xffff;
 #endif
 /* how long until repeat kicks in */
 #define REPEAT_START      6
@@ -1310,11 +1311,16 @@ void mouse_tick_task(void)
         }
         
         mouse_coords = (x<<16)|y;
+        last_touchscreen_touch = current_tick;
         button_event(BUTTON_TOUCHSCREEN, true);
         if (debug_wps)
             printf("Mouse at: (%d, %d)\n", x, y);
     }
 }
+int touchscreen_last_touch(void)
+{
+    return last_touchscreen_touch;
+}
 #endif
 void button_init(void)
 {

wps/cabbiev2.320x240x16.mrobe500.wps

@@ -0,0 +1,47 @@
+# cabbie 2.0 default
+# (C) 2007, Johannes Voggenthaler (Zinc Alloy)
+#derived from "cabbie" (C) Yohann Misquitta
+%wd
+%T|286|207|24|24|play|
+%T|0|207|84|24|menu|
+%X|wpsbackdrop-320x240x16.bmp|
+%xl|A|lock-320x240x16.bmp|91|207|2|
+%xl|B|battery-320x240x16.bmp|126|207|10|
+%xl|C|volume-320x240x16.bmp|177|207|10|
+%xl|D|shuffle-320x240x16.bmp|218|211|
+%xl|E|repeat-320x240x16.bmp|261|207|4|
+%xl|F|playmode-320x240x16.bmp|286|207|5|
+%Cl|16|32|s120|s120|
+%pb|pb-320x240x16.bmp|10|162|300|15|
+%?mh<%xdAa|%xdAb>
+%?bp<%?bc<%xdBa|%xdBb>|%?bl<|%xdBc|%xdBd|%xdBe|%xdBf|%xdBg|%xdBh|%xdBi|%xdBj>>
+%?pv<%xdCa|%xdCb|%xdCc|%xdCd|%xdCe|%xdCf|%xdCg|%xdCh|%xdCi|%xdCj>
+%?ps<%xdD>
+%?mm<|%xdEa|%xdEb|%xdEc|%xdEd>
+%?mp<%xdFa|%xdFc|%xdFb|%xdFd|%xdFe>
+%?C<%Vda%C|%Vdb>
+#NowPlaying
+
+%Vl|a|153|30|-|130|1|-|-|
+%s%al%?it<%it|%fn>
+%s%al%?ia<%ia|%?d2<%d2|(root)>>
+%s%al%?id<%id|%?d1<%d1|(root)>>
+#%s%al%iy
+
+%s%alNext Track:
+%s%al%?It<%It|%Fn>
+%s%al%Ia
+
+%Vl|b|0|30|-|130|1|-|-|
+%s%ac%?it<%it|%fn>
+%s%ac%?ia<%ia|%?d2<%d2|(root)>>
+%s%ac%?id<%id|%?d1<%d1|(root)>>
+%s%ac%iy
+
+%acNext Track:
+%s%ac%?It<%It|%Fn>
+%s%ac%Ia
+
+%V|0|180|-|20|1|-|-|
+%al   %pc%ac%pp of %pe%ar%pr   
+