A bunch of new features for the bar type tags (%pb, %pv, %bl, etc):

* the bar orientation (horiz/vert) is now chosen based on the width and heigt values (or can be forced).
* the fill direction can now be inverted (fill right to left, or top to bottom is considered inverted)
* It can now draw a slider type bar instead of a fill type (or indeed a slider with a fill type)

To configure the new bar, any (or all) of the following params can be used after the bmp filename (order makes no difference either):
invert - cause the bar to fill in the inverted direction
vertical - draw a vertical bar (not needed if the height > width)
horizontal - draw a horizontal bar (this is obviously the default)
nofill - dont draw the filling bar (this still draws the outline, obviously pointless without the slider param)
slider - draw an image for the slider. The next param MUST be the label of the image to draw. No option to use a subimage here, so the whole image needs to be the image you want on the slider. 

example: %pb(0,0,-,-,-,nofill, slider, slider_image, invert) - draw a boring horizontal progressbar which doesnt fill and only draws the image "slider_image" which moves right to left.

the slider type might need some tweaking. let us know how it goes


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27821 a1c6a512-1295-4272-9138-f99709370657

apps/gui/scrollbar.c

@@ -88,6 +88,12 @@ void gui_scrollbar_draw(struct screen * screen, int x, int y,
     int infill;
 #endif
 
+    if (flags & INVERTFILL)
+    {
+        min_shown = items - max_shown;
+        max_shown = items;
+    }
+
     inner_x  = x + 1;
     inner_y  = y + 1;
     inner_wd = width  - 2;
@@ -178,11 +184,18 @@ void gui_bitmap_scrollbar_draw(struct screen * screen, struct bitmap *bm, int x,
     int start;
     int size;
     int inner_len;
+    int startx = 0, starty = 0;
 
     screen->set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
 
     /* clear pixels in progress bar */
     screen->fillrect(x, y, width, height);
+    
+    if (flags & INVERTFILL)
+    {
+        min_shown = items - max_shown;
+        max_shown = items;
+    }
 
     if (flags & HORIZONTAL)
         inner_len = width;
@@ -196,19 +209,23 @@ void gui_bitmap_scrollbar_draw(struct screen * screen, struct bitmap *bm, int x,
     if (flags & HORIZONTAL) {
         x += start;
         width = size;
+        if (flags & INVERTFILL)
+            startx = start;
     } else {
         y += start;
         height = size;
+        if (flags & INVERTFILL)
+            starty = start;
     }
 
 #if LCD_DEPTH > 1
     if (bm->format == FORMAT_MONO)
 #endif
-        screen->mono_bitmap_part(bm->data, 0, 0,
+        screen->mono_bitmap_part(bm->data, startx, starty,
                                  bm->width, x, y, width, height);
 #if LCD_DEPTH > 1
     else
-        screen->transparent_bitmap_part((fb_data *)bm->data, 0, 0,
+        screen->transparent_bitmap_part((fb_data *)bm->data, startx, starty,
                                         STRIDE(screen->screen_type, 
                                             bm->width, bm->height), 
                                         x, y, width, height);

apps/gui/scrollbar.h

@@ -28,12 +28,13 @@
 enum orientation {
     VERTICAL          = 0x0000,   /* Vertical orientation     */
     HORIZONTAL        = 0x0001,   /* Horizontal orientation   */
+    INVERTFILL        = 0x0002,   /* Invert the fill direction */
 #ifdef HAVE_LCD_COLOR
-    FOREGROUND        = 0x0002,   /* Do not clear background pixels */
+    FOREGROUND        = 0x0020,   /* Do not clear background pixels */
-    INNER_FILL        = 0x0004,   /* Fill inner part even if FOREGROUND */
+    INNER_FILL        = 0x0040,   /* Fill inner part even if FOREGROUND */
-    INNER_BGFILL      = 0x0008,   /* Fill inner part with background
+    INNER_BGFILL      = 0x0080,   /* Fill inner part with background
                                      color even if FOREGROUND */
-    INNER_FILL_MASK   = 0x000c,
+    INNER_FILL_MASK   = 0x00c0,
 #endif
 };
 

apps/gui/skin_engine/skin_display.c

@@ -129,7 +129,10 @@ void draw_progressbar(struct gui_wps *gwps, int line, struct progressbar *pb)
     struct wps_state *state = gwps->state;
     struct mp3entry *id3 = state->id3;
     int y = pb->y, height = pb->height;
-    unsigned long length, elapsed;
+    unsigned long length, end;
+    int flags = HORIZONTAL;
+    
+    int drawn_length, drawn_end;
     
     if (height < 0)
         height = font_get(vp->font)->height;
@@ -148,39 +151,62 @@ void draw_progressbar(struct gui_wps *gwps, int line, struct progressbar *pb)
         int minvol = sound_min(SOUND_VOLUME);
         int maxvol = sound_max(SOUND_VOLUME);
         length = maxvol-minvol;
-        elapsed = global_settings.volume-minvol;
+        end = global_settings.volume-minvol;
     }
     else if (pb->type == SKIN_TOKEN_BATTERY_PERCENTBAR)
     {
         length = 100;
-        elapsed = battery_level();
+        end = battery_level();
     }
 #if CONFIG_TUNER
     else if (in_radio_screen() || (get_radio_status() != FMRADIO_OFF))
     {
         int min = fm_region_data[global_settings.fm_region].freq_min;
-        elapsed = radio_current_frequency() - min;
+        end = radio_current_frequency() - min;
         length = fm_region_data[global_settings.fm_region].freq_max - min;
     }
 #endif
     else if (id3 && id3->length)
     {
         length = id3->length;
-        elapsed = id3->elapsed + state->ff_rewind_count;
+        end = id3->elapsed + state->ff_rewind_count;
     }
     else
     {
         length = 1;
-        elapsed = 0;
+        end = 0;
+    }
+    
+    if (pb->nofill)
+    {
+        drawn_length = 1;
+        drawn_end = 0;
+    }
+    else
+    {
+        drawn_length = length;
+        drawn_end = end;
+    }
+    
+    if (!pb->horizontal)
+    {
+        /* we want to fill upwards which is technically inverted. */
+        flags = VERTICAL|INVERTFILL;
+    }
+    
+    if (pb->invert_fill_direction)
+    {
+        flags ^= INVERTFILL;
     }
 
+    
     if (pb->have_bitmap_pb)
         gui_bitmap_scrollbar_draw(display, &pb->bm,
                                 pb->x, y, pb->width, pb->bm.height,
-                                length, 0, elapsed, HORIZONTAL);
+                                drawn_length, 0, drawn_end, flags);
     else
         gui_scrollbar_draw(display, pb->x, y, pb->width, height,
-                           length, 0, elapsed, HORIZONTAL);
+                           drawn_length, 0, drawn_end, flags);
 
     if (pb->type == SKIN_TOKEN_PROGRESSBAR)
     {
@@ -201,6 +227,41 @@ void draw_progressbar(struct gui_wps *gwps, int line, struct progressbar *pb)
         {
             presets_draw_markers(display, pb->x, y, pb->width, height);
         }
+#endif
+    }
+    
+    if (pb->slider)
+    {
+        int x = pb->x, y = pb->y;
+        int width = pb->width;
+        int height = pb->height;
+        struct gui_img *img = pb->slider;
+            
+        if (flags&VERTICAL)
+        {
+            y += pb->height*end/length;
+            height = img->bm.height;
+        }
+        else
+        {
+            x += pb->width*end/length;
+            width = img->bm.width;
+        }
+#if LCD_DEPTH > 1
+        if(img->bm.format == FORMAT_MONO) {
+#endif
+            display->mono_bitmap_part(img->bm.data,
+                                      0, 0,
+                                      img->bm.width, x,
+                                      y, width, height);
+#if LCD_DEPTH > 1
+        } else {
+            display->transparent_bitmap_part((fb_data *)img->bm.data,
+                                             0, 0,
+                                             STRIDE(display->screen_type,
+                                             img->bm.width, img->bm.height),
+                                             x, y, width, height);
+        }
 #endif
     }
 }

apps/gui/skin_engine/skin_parser.c

@@ -540,6 +540,7 @@ static int parse_progressbar_tag(struct skin_element* element,
     struct skin_token_list *item;
     struct viewport *vp = &curr_vp->vp;
     struct skin_tag_parameter *param = element->params;
+    int curr_param = 0;
     
     if (element->params_count == 0 && 
         element->tag->type != SKIN_TOKEN_PROGRESSBAR)
@@ -554,6 +555,7 @@ static int parse_progressbar_tag(struct skin_element* element,
     pb->have_bitmap_pb = false;
     pb->bm.data = NULL; /* no bitmap specified */
     pb->follow_lang_direction = follow_lang_direction > 0;
+    pb->invert_fill_direction = false;
     
     if (element->params_count == 0)
     {
@@ -614,6 +616,41 @@ static int parse_progressbar_tag(struct skin_element* element,
     if (!isdefault(param))
         pb->bm.data = param->data.text;
         
+    curr_param = 5;
+    pb->invert_fill_direction = false;
+    pb->nofill = false;
+    pb->slider = NULL;
+    pb->horizontal = pb->width > pb->height;
+    while (curr_param < element->params_count)
+    {
+        param++;
+        if (!strcmp(param->data.text, "invert"))
+            pb->invert_fill_direction = true;
+        else if (!strcmp(param->data.text, "nofill"))
+            pb->nofill = true;
+        else if (!strcmp(param->data.text, "slider"))
+        {
+            if (curr_param+1 < element->params_count)
+            {
+                curr_param++;
+                param++;
+                pb->slider = find_image(param->data.text, wps_data);
+                if (!pb->slider)
+                    return -1;
+            }
+        }
+        else if (!strcmp(param->data.text, "vertical"))
+        {
+            pb->horizontal = false;
+            if (isdefault(&element->params[3]))
+                pb->height = vp->height - pb->x;
+        }
+        else if (!strcmp(param->data.text, "horizontal"))
+            pb->horizontal = true;
+            
+        curr_param++;
+    }
+        
         
     if (token->type == SKIN_TOKEN_VOLUME)
         token->type = SKIN_TOKEN_VOLUMEBAR;

apps/gui/skin_engine/wps_internals.h

@@ -106,6 +106,11 @@ struct progressbar {
     /*progressbar image*/
     struct bitmap bm;
     bool have_bitmap_pb;
+    
+    bool invert_fill_direction;
+    bool nofill;
+    struct gui_img *slider;
+    bool horizontal;
 };
 #endif
 

lib/skin_parser/tag_table.c

@@ -22,7 +22,7 @@
 #include "tag_table.h"
 
 #include <string.h>
-#define BAR_PARAMS "*|iiiis"
+#define BAR_PARAMS "*|iiiisN"
 /* The tag definition table */
 static const struct tag_info legal_tags[] = 
 {