implement play/pause

lua/playing.lua

@@ -107,7 +107,11 @@ return function(opts)
   controls:Image {
     src = "//lua/img/prev.png",
   }
-  local play_pause_img = controls:Image {
+  local play_pause_btn = controls:Button {}
+  play_pause_btn:onClicked(function()
+    playback.playing:set(not playback.playing:get())
+  end)
+  local play_pause_img = play_pause_btn:Image {
     src = "//lua/img/pause.png",
   }
   controls:Image {

src/lua/include/property.hpp

@@ -26,6 +26,8 @@ class Property {
   Property(const LuaValue&);
   Property(const LuaValue&, std::function<bool(const LuaValue&)>);
 
+  auto Get() -> const LuaValue& { return value_; }
+
   auto IsTwoWay() -> bool { return cb_.has_value(); }
 
   auto PushValue(lua_State& s) -> int;

src/lua/property.cpp

@@ -221,7 +221,7 @@ auto Property::PopValue(lua_State& s) -> bool {
       }
       break;
     case LUA_TBOOLEAN:
-      new_val = lua_toboolean(&s, 2);
+      new_val = static_cast<bool>(lua_toboolean(&s, 2));
       break;
     case LUA_TSTRING:
       new_val = lua_tostring(&s, 2);

src/ui/include/ui_fsm.hpp

@@ -136,6 +136,7 @@ class Lua : public UiState {
  private:
   auto PushLuaScreen(lua_State*) -> int;
   auto PopLuaScreen(lua_State*) -> int;
+  auto SetPlaying(const lua::LuaValue&) -> bool;
 
   std::shared_ptr<lua::Property> battery_pct_;
   std::shared_ptr<lua::Property> battery_mv_;

src/ui/ui_fsm.cpp

@@ -7,6 +7,7 @@
 #include "ui_fsm.hpp"
 
 #include <memory>
+#include <variant>
 
 #include "lua.h"
 #include "lua.hpp"
@@ -179,7 +180,8 @@ void Lua::entry() {
     queue_position_ = std::make_shared<lua::Property>(0);
     queue_size_ = std::make_shared<lua::Property>(0);
 
-    playback_playing_ = std::make_shared<lua::Property>(false);
+    playback_playing_ = std::make_shared<lua::Property>(
+        false, [&](const lua::LuaValue& val) { return SetPlaying(val); });
     playback_track_ = std::make_shared<lua::Property>();
     playback_position_ = std::make_shared<lua::Property>();
 
@@ -250,6 +252,18 @@ auto Lua::PopLuaScreen(lua_State* s) -> int {
   return 0;
 }
 
+auto Lua::SetPlaying(const lua::LuaValue& val) -> bool {
+  bool current_val = std::get<bool>(playback_playing_->Get());
+  if (!std::holds_alternative<bool>(val)) {
+    return false;
+  }
+  bool new_val = std::get<bool>(val);
+  if (current_val != new_val) {
+    events::Audio().Dispatch(audio::TogglePlayPause{});
+  }
+  return true;
+}
+
 void Lua::exit() {
   lv_group_set_default(NULL);
 }