check_colors.py Test/demo program for any nano-gui displays.

Fill the screen with stripes of all colors.
Frame the screen.

gui/demos/check_colors.py

@@ -1,8 +1,13 @@
-from color_setup import ssd  # Create a display instance
+# check_colors.py Test/demo program for any nano-gui displays
+
+# Released under the MIT License (MIT). See LICENSE.
+# Copyright (c) 2021 Ihor Nehrutsa
+
+from color_setup import *  # Create a display instance
 from gui.core.colors import *
 from gui.core.nanogui import refresh
 
-refresh(ssd, True)  # Initialise and clear display.
+refresh(ssd, clear=True)  # Initialise and clear display.
 # Uncomment for ePaper displays
 # ssd.wait_until_ready()
 # ssd.fill(0)
@@ -10,11 +15,19 @@ refresh(ssd, True)  # Initialise and clear display.
 # Fill the display with stripes of all colors
 COLORS = 16
 dh = ssd.height // COLORS
-dw = ssd.width // COLORS
 for c in range(0, COLORS):
     h = dh * c
-    w = dw * c
-    ssd.fill_rect(w, 0, w + dw, ssd.height - 1, c)  
-    #ssd.fill_rect(0, h, ssd.width - 1, h + dh, c)  
+    ssd.fill_rect(0, h, ssd.width, h + dh, c)
+if dh * COLORS < ssd.height:
+    ssd.fill_rect(0, dh * COLORS, ssd.width, ssd.height - dh * COLORS, BLACK)  # Fill in the remaining blank area at the bottom
+
+# half frame at the top of the screen
+ssd.line(0, 0, ssd.width - 1, 0, WHITE)  # top line from left to right
+ssd.line(0, 0, 0, ssd.height // 2, WHITE)  # left line from top to middle
+ssd.line(ssd.width - 1, 0, ssd.width - 1, ssd.height // 2, WHITE)  # right line from top to middle
+# half frame at the bottom of the screen
+ssd.line(0, ssd.height//2, 0, ssd.height-1, MAGENTA)  # left line from middle to bottom
+ssd.line(ssd.width - 1, ssd.height//2, ssd.width - 1, ssd.height-1, MAGENTA)  # right line from middle to bottom
+ssd.line(0, ssd.height-1, ssd.width - 1, ssd.height-1, MAGENTA)  #  bottom line from left to right
 
 ssd.show()