feat(color): allow LVGL Lua objects to remain fixed in place within scrolling containers (#7175)

radio/src/lua/lua_lvgl_widget.cpp

@@ -654,6 +654,8 @@ void LvglWidgetObjectBase::parseParam(lua_State *L, const char *key)
     getSizeFunction = ::getRef(L, LUA_REGISTRYINDEX);
   } else if (!strcmp(key, "pos")) {
     getPosFunction = ::getRef(L, LUA_REGISTRYINDEX);
+  } else if (!strcmp(key, "floating")) {
+    floating = getLuaBool(L);
   }
 }
 
@@ -746,6 +748,7 @@ void LvglWidgetObjectBase::refresh()
   setSize(w, h);
   setColor(color.flags);
   setOpacity(opacity.value);
+  setFloating(floating);
 }
 
 void LvglWidgetObjectBase::create(lua_State *L, int index)
@@ -777,6 +780,17 @@ void LvglSimpleWidgetObject::setSize(coord_t w, coord_t h)
   if (lvobj) lv_obj_set_size(lvobj, w, h);
 }
 
+void LvglSimpleWidgetObject::setFloating(bool isFloating)
+{
+  floating = isFloating;
+  if (lvobj) {
+    if (floating)
+      lv_obj_add_flag(lvobj, LV_OBJ_FLAG_FLOATING);
+    else
+      lv_obj_clear_flag(lvobj, LV_OBJ_FLAG_FLOATING);
+  }
+}
+
 void LvglSimpleWidgetObject::show()
 {
   if (!isVisible()) lv_obj_clear_flag(lvobj, LV_OBJ_FLAG_HIDDEN);
@@ -867,6 +881,7 @@ void LvglWidgetLabel::build(lua_State *L)
   setOpacity(opacity.value);
   setFont(font.flags);
   setAlign(align.flags);
+  setFloating(floating);
 }
 
 //-----------------------------------------------------------------------------
@@ -922,6 +937,7 @@ void LvglWidgetLineBase::refresh()
 {
   setColor(color.flags);
   setOpacity(opacity.value);
+  setFloating(floating);
   setLine();
   lv_obj_set_style_line_rounded(lvobj, rounded, LV_PART_MAIN);
   if (dashGap > 0 && dashWidth > 0) {
@@ -1112,6 +1128,7 @@ void LvglWidgetLine::build(lua_State *L)
     setLine();
     setColor(color.flags);
     setOpacity(opacity.value);
+    setFloating(floating);
   }
 }
 
@@ -1399,8 +1416,9 @@ void LvglWidgetTriangle::build(lua_State *L)
     setPos(x, y);
     LvglSimpleWidgetObject::setSize(w,h);
 
-    // Set color
+    // Set properties
     setColor(color.flags);
+    setFloating(floating);
   }
 }
 
@@ -1468,6 +1486,17 @@ void LvglWidgetObject::setSize(coord_t w, coord_t h)
   if (window) window->setSize(w, h);
 }
 
+void LvglWidgetObject::setFloating(bool isFloating)
+{
+  floating = isFloating;
+  if (window) {
+    if (floating)
+      lv_obj_add_flag(window->getLvObj(), LV_OBJ_FLAG_FLOATING);
+    else
+      lv_obj_clear_flag(window->getLvObj(), LV_OBJ_FLAG_FLOATING);
+  }
+}
+
 bool LvglWidgetObject::setFlex()
 {
   if (customPad) {
@@ -1602,6 +1631,7 @@ void LvglWidgetBox::build(lua_State *L)
   setPosAndSize();
   setColor(color.flags);
   setOpacity(opacity.value);
+  setFloating(floating);
 }
 
 //-----------------------------------------------------------------------------
@@ -1944,6 +1974,7 @@ void LvglWidgetArc::build(lua_State *L)
   setBgColor(bgColor.flags);
   setOpacity(opacity.value);
   setBgOpacity(bgOpacity.value);
+  setFloating(floating);
 }
 
 //-----------------------------------------------------------------------------
@@ -1991,6 +2022,7 @@ void LvglWidgetImage::build(lua_State *L)
 {
   window = new StaticImage(lvglManager->getCurrentParent(), {x, y, w, h},
                            filename.chars(), fillFrame);
+  setFloating(floating);
 }
 
 //-----------------------------------------------------------------------------
@@ -2009,6 +2041,7 @@ void LvglWidgetQRCode::parseParam(lua_State *L, const char *key)
 void LvglWidgetQRCode::build(lua_State *L)
 {
   window = new QRCode(lvglManager->getCurrentParent(), x, y, w, data, colorToRGB(color.flags), colorToRGB(bgColor));
+  setFloating(floating);
 }
 
 //-----------------------------------------------------------------------------