examples: Add marker.py.

examples/marker.py

@@ -0,0 +1,50 @@
+import time
+
+import explorer
+from picovector import ANTIALIAS_NONE, HALIGN_CENTER, PicoVector
+
+vector = PicoVector(explorer.display)
+
+FONT_SIZE = 70
+
+vector.set_antialiasing(ANTIALIAS_NONE)
+vector.set_font("marker.af", FONT_SIZE)
+vector.set_font_size(FONT_SIZE)
+vector.set_font_line_height(70)
+vector.set_font_align(HALIGN_CENTER)
+
+BG = explorer.display.create_pen(0, 150, 190)
+FG = explorer.display.create_pen(0, 100, 126)
+BLACK = explorer.BLACK
+
+
+text = """Permanent
+marker"""
+
+x, y, w, h = vector.measure_text(text)
+
+x = int((320 - w) / 2)
+y = int((240 - h) / 2) + (FONT_SIZE // 2)
+
+explorer.display.set_layer(1)
+explorer.display.set_pen(BG)
+explorer.display.clear()
+
+explorer.display.set_pen(FG)
+vector.text(text, x, y + 4)
+explorer.display.set_pen(BLACK)
+vector.text(text, x, y)
+
+
+explorer.display.set_layer(0)
+
+GRADIENT_WIDTH = 320 * 4
+
+rgb = [explorer.display.create_pen_hsv(x / GRADIENT_WIDTH, 1.0, 1.0) for x in range(GRADIENT_WIDTH)]
+
+while True:
+    o = time.ticks_ms() // 10
+    for x in range(320):
+        explorer.display.set_pen(rgb[(x + o) % GRADIENT_WIDTH])
+        explorer.display.line(x, 0, x, 240)
+    explorer.display.update()