forecast tab and multiple fixes

Author: lixas

images/condition/unknown.png

@@ -0,0 +1,20 @@
+import lvgl as lv
+from lib.imagetools import get_png_info, open_png
+import gc
+
+class pageBase():
+    def __init__(self):
+        gc.collect()
+        decoder = lv.img.decoder_create()
+        decoder.info_cb = get_png_info
+        decoder.open_cb = open_png
+        gc.collect()
+
+    def get_img(self, path):
+        gc.collect()
+        with open(path ,'rb') as f:
+            png_data = f.read()
+        return lv.img_dsc_t({
+            'data_size': len(png_data),
+            'data': png_data
+        })