WIP start on an updated main menu ui

lib/luavgl/src/style.c

@@ -18,6 +18,7 @@ typedef enum {
 
 enum {
   LV_STYLE_SIZE = _LV_STYLE_LAST_BUILT_IN_PROP + 1,
+  LV_STYLE_MARGIN_ALL,
   LV_STYLE_PAD_ALL,
   LV_STYLE_PAD_VER,
   LV_STYLE_PAD_HOR,
@@ -61,6 +62,10 @@ static const struct style_map_s {
     {"transform_pivot_x",  LV_STYLE_TRANSFORM_PIVOT_X,  STYLE_TYPE_INT                       },
     {"transform_pivot_y",  LV_STYLE_TRANSFORM_PIVOT_Y,  STYLE_TYPE_INT                       },
 #endif
+    {"margin_top",         LV_STYLE_MARGIN_TOP,         STYLE_TYPE_INT                       },
+    {"margin_bottom",      LV_STYLE_MARGIN_BOTTOM,      STYLE_TYPE_INT                       },
+    {"margin_left",        LV_STYLE_MARGIN_LEFT,        STYLE_TYPE_INT                       },
+    {"margin_right",       LV_STYLE_MARGIN_RIGHT,       STYLE_TYPE_INT                       },
     {"pad_top",            LV_STYLE_PAD_TOP,            STYLE_TYPE_INT                       },
     {"pad_bottom",         LV_STYLE_PAD_BOTTOM,         STYLE_TYPE_INT                       },
     {"pad_left",           LV_STYLE_PAD_LEFT,           STYLE_TYPE_INT                       },
@@ -134,6 +139,7 @@ static const struct style_map_s {
 
   /* styles combined */
     {"size",               LV_STYLE_SIZE,               STYLE_TYPE_SPECIAL | STYLE_TYPE_INT  },
+    {"margin_all",         LV_STYLE_MARGIN_ALL,         STYLE_TYPE_SPECIAL | STYLE_TYPE_INT  },
     {"pad_all",            LV_STYLE_PAD_ALL,            STYLE_TYPE_SPECIAL | STYLE_TYPE_INT  },
     {"pad_ver",            LV_STYLE_PAD_VER,            STYLE_TYPE_SPECIAL | STYLE_TYPE_INT  },
     {"pad_hor",            LV_STYLE_PAD_HOR,            STYLE_TYPE_SPECIAL | STYLE_TYPE_INT  },
@@ -417,6 +423,13 @@ static int luavgl_set_style_kv(lua_State *L, style_set_cb_t cb, void *args)
       cb(LV_STYLE_HEIGHT, value, args);
       break;
 
+    case LV_STYLE_MARGIN_ALL:
+      cb(LV_STYLE_MARGIN_TOP, value, args);
+      cb(LV_STYLE_MARGIN_BOTTOM, value, args);
+      cb(LV_STYLE_MARGIN_LEFT, value, args);
+      cb(LV_STYLE_MARGIN_RIGHT, value, args);
+      break;
+
     case LV_STYLE_PAD_ALL:
       cb(LV_STYLE_PAD_TOP, value, args);
       cb(LV_STYLE_PAD_BOTTOM, value, args);

lua/images.lua

@@ -0,0 +1,13 @@
+local lvgl = require("lvgl")
+
+return {
+  play = lvgl.ImgData("//lua/img/play.png"),
+  pause = lvgl.ImgData("//lua/img/pause.png"),
+  next = lvgl.ImgData("//lua/img/next.png"),
+  prev = lvgl.ImgData("//lua/img/prev.png"),
+  shuffle = lvgl.ImgData("//lua/img/shuffle.png"),
+  repeat_src = lvgl.ImgData("//lua/img/repeat.png"), -- repeat is a reserved word
+  queue = lvgl.ImgData("//lua/img/queue.png"),
+  files = lvgl.ImgData("//lua/img/files.png"),
+  settings = lvgl.ImgData("//lua/img/settings.png"),
+}

lua/main_menu.lua

@@ -7,23 +7,94 @@ local playing = require("playing")
 local styles = require("styles")
 local filesystem = require("filesystem")
 local screen = require("screen")
+local font = require("font")
+local theme = require("theme")
+local img = require("images")
+local playback = require("playback")
 
 return widgets.MenuScreen:new {
   createUi = function(self)
     widgets.MenuScreen.createUi(self)
 
+    -- At the top, a card showing details about the current track. Hidden if
+    -- there is no track currently playing.
+    -- || Cool Song 0:01
+
+    local now_playing = lvgl.Button(self.root, {
+      flex = {
+        flex_direction = "row",
+        flex_wrap = "nowrap",
+        justify_content = "flex-start",
+        align_items = "center",
+        align_content = "flex-start",
+      },
+      w = lvgl.PCT(100),
+      h = lvgl.SIZE_CONTENT,
+      margin_all = 2,
+      pad_column = 4,
+      border_color = "#FFFFFF",
+      border_width = 1,
+    })
+
+    local play_pause = now_playing:Image { src = img.play }
+    local title = now_playing:Label {
+      flex_grow = 1,
+      h = lvgl.SIZE_CONTENT,
+      text = " ",
+      long_mode = 1,
+    }
+    local time_remaining = now_playing:Label {
+      text = " ",
+      text_font = font.fusion_10,
+    }
+
+    now_playing:onClicked(function() backstack.push(playing:new()) end)
+
+    local has_focus = false
+    local track_duration = nil
+
+    self.bindings = self.bindings + {
+      playback.playing:bind(function(playing)
+        if playing then
+          play_pause:set_src(img.play)
+        else
+          play_pause:set_src(img.pause)
+        end
+      end),
+      playback.track:bind(function(track)
+        if not track then
+          now_playing:add_flag(lvgl.FLAG.HIDDEN)
+          return
+        else
+          has_focus = true
+          now_playing:clear_flag(lvgl.FLAG.HIDDEN)
+        end
+        title:set { text = track.title }
+        if track.duration then
+          track_duration = track.duration
+        end
+      end),
+      playback.position:bind(function(pos)
+        if not pos then return end
+        if not track_duration then return end
+        local remaining = track_duration - pos
+        if remaining < 0 then remaining = 0 end
+        time_remaining:set {
+          text = string.format("%d:%02d", remaining // 60, remaining % 60)
+        }
+      end),
+    }
+
+    -- Next, a list showing the user's prefer's music source. This defaults to
+    -- a list of all available database indexes, but could also be the contents
+    -- of the SD card root.
+
     local list = lvgl.List(self.root, {
       w = lvgl.PCT(100),
       h = lvgl.PCT(100),
       flex_grow = 1,
     })
 
-    local now_playing = list:add_btn(nil, "Now Playing")
-    now_playing:onClicked(function()
-      backstack.push(playing:new())
-    end)
-    now_playing:add_style(styles.list_item)
-
     local indexes = database.indexes()
     for _, idx in ipairs(indexes) do
       local btn = list:add_btn(nil, tostring(idx))
@@ -34,21 +105,46 @@ return widgets.MenuScreen:new {
         })
       end)
       btn:add_style(styles.list_item)
+      if not has_focus then
+        has_focus = true
+        btn:focus()
+      end
     end
 
-    local files = list:add_btn(nil, "Files")
-    files:onClicked(function()
+    -- Finally, the bottom bar with icon buttons for other device features.
+
+    local bottom_bar = lvgl.Object(self.root, {
+      flex = {
+        flex_direction = "row",
+        flex_wrap = "nowrap",
+        justify_content = "space-evenly",
+        align_items = "center",
+        align_content = "flex-start",
+      },
+      w = lvgl.PCT(100),
+      h = lvgl.SIZE_CONTENT,
+      pad_top = 4,
+    })
+
+    local queue_btn = bottom_bar:Button {}
+    queue_btn:Image { src = img.queue }
+    theme.set_style(queue_btn, "icon_enabled")
+
+    local files_btn = bottom_bar:Button {}
+    files_btn:onClicked(function()
       backstack.push(require("file_browser"):new {
         title = "Files",
         iterator = filesystem.iterator(""),
       })
     end)
-    files:add_style(styles.list_item)
+    files_btn:Image { src = img.files }
+    theme.set_style(files_btn, "icon_enabled")
 
-    local settings = list:add_btn(nil, "Settings")
-    settings:onClicked(function()
+    local settings_btn = bottom_bar:Button {}
+    settings_btn:onClicked(function()
       backstack.push(require("settings"):new())
     end)
-    settings:add_style(styles.list_item)
+    settings_btn:Image { src = img.settings }
+    theme.set_style(settings_btn, "icon_enabled")
   end,
 }

lua/playing.lua

@@ -7,14 +7,7 @@ local queue = require("queue")
 local screen = require("screen")
 local theme = require("theme")
 
-local img = {
-  play = lvgl.ImgData("//lua/img/play.png"),
-  pause = lvgl.ImgData("//lua/img/pause.png"),
-  next = lvgl.ImgData("//lua/img/next.png"),
-  prev = lvgl.ImgData("//lua/img/prev.png"),
-  shuffle = lvgl.ImgData("//lua/img/shuffle.png"),
-  repeat_src = lvgl.ImgData("//lua/img/repeat.png"), -- repeat is a reserved word
-}
+local img = require("images")
 
 local format_time = function(time)
   time = math.floor(time)