example(micropython): updated MicroPython examples according to LVGL changes (#4031)

examples/widgets/bar/lv_example_bar_4.py

@@ -1,30 +1,20 @@
-#
-# get an icon
-#
-def get_icon(filename,xres,yres):
-    try:
-        sdl_filename = "../../assets/" + filename + "_" + str(xres) + "x" + str(yres) + "_argb8888.fnt"
-        print("file name: ", sdl_filename)
-        with open(sdl_filename,'rb') as f:
-            icon_data = f.read()
-    except:
-        print("Could not find image file: " + filename)
-        return None
+# Create an image from the png file
+try:
+    with open('../../assets/img_strip.png','rb') as f:
+        png_data = f.read()
+except:
+    print("Could not find img_strip.png")
+    sys.exit()
 
-    icon_dsc = lv.img_dsc_t(
-        {
-            "header": {"always_zero": 0, "w": xres, "h": yres, "cf": lv.COLOR_FORMAT.NATIVE_ALPHA},
-            "data": icon_data,
-            "data_size": len(icon_data),
-        }
-    )
-    return icon_dsc
+img_skew_strip_dsc = lv.img_dsc_t({
+  'data_size': len(png_data),
+  'data': png_data
+})
 
 #
 # Bar with stripe pattern and ranged value
 #
 
-img_skew_strip_dsc = get_icon("img_skew_strip",80,20)
 style_indic = lv.style_t()
 
 style_indic.init()

examples/widgets/bar/test.py

@@ -1,64 +0,0 @@
-#!/opt/bin/lv_micropython -i
-import lvgl as lv
-
-default_group = lv.group_create()
-default_group.set_default()
-
-lv.sdl_window_create(480, 320)
-sdl_indev = lv.sdl_mouse_create()
-sdl_indev.set_group(default_group)
-
-def set_value(bar, v):
-    bar.set_value(v, lv.ANIM.OFF)
-
-def event_cb(e):
-    dsc = lv.obj_draw_part_dsc_t.__cast__(e.get_param())
-    if dsc.part != lv.PART.INDICATOR:
-        return
-
-    obj= e.get_target_obj()
-
-    label_dsc = lv.draw_label_dsc_t()
-    label_dsc.init()
-    # label_dsc.font = LV_FONT_DEFAULT;
-
-    value_txt = str(obj.get_value())
-    txt_size = lv.point_t()
-    lv.txt_get_size(txt_size, value_txt, label_dsc.font, label_dsc.letter_space, label_dsc.line_space, lv.COORD.MAX, label_dsc.flag)
-
-    txt_area = lv.area_t()
-    # If the indicator is long enough put the text inside on the right
-    if dsc.draw_area.get_width() > txt_size.x + 20:
-        txt_area.x2 = dsc.draw_area.x2 - 5
-        txt_area.x1 = txt_area.x2 - txt_size.x + 1
-        label_dsc.color = lv.color_white()
-    # If the indicator is still short put the text out of it on the right*/
-    else:
-        txt_area.x1 = dsc.draw_area.x2 + 5
-        txt_area.x2 = txt_area.x1 + txt_size.x - 1
-        label_dsc.color = lv.color_black()
-
-    txt_area.y1 = dsc.draw_area.y1 + (dsc.draw_area.get_height() - txt_size.y) // 2
-    txt_area.y2 = txt_area.y1 + txt_size.y - 1
-
-    dsc.draw_ctx.label(label_dsc, txt_area, value_txt, None)
-
-#
-# Custom drawer on the bar to display the current value
-#
-
-bar = lv.bar(lv.scr_act())
-bar.add_event(event_cb, lv.EVENT.DRAW_PART_END, None)
-bar.set_size(200, 20)
-bar.center()
-
-a = lv.anim_t()
-a.init()
-a.set_var(bar)
-a.set_values(0, 100)
-a.set_custom_exec_cb(lambda a,val: set_value(bar,val))
-a.set_time(2000)
-a.set_playback_time(2000)
-a.set_repeat_count(lv.ANIM_REPEAT_INFINITE)
-lv.anim_t.start(a)
-