add demo

Author: ladyada

adafruit_button.py

@@ -53,7 +53,7 @@ class Button():
     ROUNDRECT = const(1)
     SHADOWRECT = const(2)
     SHADOWROUNDRECT = const(3)
-    def __init__(self, *, x, y, width, height, style=RECT,
+    def __init__(self, *, x, y, width, height, name=None, style=RECT,
                  fill_color=0xFFFFFF, outline_color=0x0,
                  label=None, label_font=None, label_color=0x0,
                  selected_fill=None, selected_outline=None,
@@ -65,6 +65,7 @@ def __init__(self, *, x, y, width, height, style=RECT,
         self._font = label_font
         self._selected = False
         self.group = displayio.Group()
+        self.name = name
 
         self.fill_color = fill_color
         self.outline_color = outline_color
@@ -101,7 +102,7 @@ def __init__(self, *, x, y, width, height, style=RECT,
                 self.group.append(self.shadow)
             self.group.append(self.body)
 
-        if label:   # button with text label
+        if label and (label_color is not None):   # button with text label
             if not label_font:
                 raise RuntimeError("Please provide label font")
             dims = label_font.text_bounding_box(label)

examples/display_button_simpletest.py

@@ -0,0 +1,112 @@
+import time
+import board
+import displayio
+import os
+from adafruit_display_text.text_area import TextArea
+from adafruit_bitmap_font import bitmap_font
+from adafruit_display_shapes.rect import Rect
+from adafruit_button import Button
+import adafruit_touchscreen
+
+# These pins are used as both analog and digital! XL, XR and YU must be analog
+# and digital capable. YD just need to be digital
+ts = adafruit_touchscreen.Touchscreen(board.TOUCH_XL, board.TOUCH_XR,
+                                      board.TOUCH_YD, board.TOUCH_YU,
+                                      calibration=((5200, 59000), (5800, 57000)),
+                                      size=(320, 240))
+
+# the current working directory (where this file is)
+cwd = ("/"+__file__).rsplit('/', 1)[0]
+fonts =  [file for file in os.listdir(cwd+"/fonts/")
+          if (file.endswith(".bdf") and not file.startswith("._"))]
+for i, filename in enumerate(fonts):
+    fonts[i] = cwd+"/fonts/"+filename
+print(fonts)
+THE_FONT = "/fonts/Chicago-12.bdf"
+DISPLAY_STRING = "Button Text"
+
+# Make the display context
+splash = displayio.Group(max_size=20)
+board.DISPLAY.show(splash)
+BUTTON_WIDTH = 80
+BUTTON_HEIGHT = 40
+BUTTON_MARGIN = 20
+
+##########################################################################
+# Make a background color fill
+
+color_bitmap = displayio.Bitmap(320, 240, 1)
+color_palette = displayio.Palette(1)
+color_palette[0] = 0x404040
+bg_sprite = displayio.TileGrid(color_bitmap,
+                               pixel_shader=color_palette,
+                               position=(0, 0))
+print(bg_sprite.position)
+splash.append(bg_sprite)
+
+##########################################################################
+
+# Load the font
+font = bitmap_font.load_font(THE_FONT)
+
+buttons = []
+# Default button styling:
+button_0 = Button(x=BUTTON_MARGIN, y=BUTTON_MARGIN,
+                  width=BUTTON_WIDTH, height=BUTTON_HEIGHT,
+                  label="button0", label_font=font)
+buttons.append(button_0)
+
+# a button with no indicators at all
+button_1 = Button(x=BUTTON_MARGIN*2+BUTTON_WIDTH, y=BUTTON_MARGIN,
+                  width=BUTTON_WIDTH, height=BUTTON_HEIGHT,
+                  fill_color=None, outline_color=None)
+buttons.append(button_1)
+
+# various colorings
+button_2 = Button(x=BUTTON_MARGIN*3+2*BUTTON_WIDTH, y=BUTTON_MARGIN,
+                  width=BUTTON_WIDTH, height=BUTTON_HEIGHT,
+                  label="button2", label_font=font, label_color=0x0000FF,
+                  fill_color=0x00FF00, outline_color=0xFF0000)
+buttons.append(button_2)
+
+# Transparent button with text
+button_3 = Button(x=BUTTON_MARGIN, y=BUTTON_MARGIN*2+BUTTON_HEIGHT,
+                  width=BUTTON_WIDTH, height=BUTTON_HEIGHT,
+                  label="button3", label_font=font, label_color=0x0,
+                  fill_color=None, outline_color=None)
+buttons.append(button_3)
+
+# a roundrect
+button_4 = Button(x=BUTTON_MARGIN, y=BUTTON_MARGIN*2+BUTTON_HEIGHT,
+                  width=BUTTON_WIDTH, height=BUTTON_HEIGHT,
+                  label="button4", label_font=font, style=Button.ROUNDRECT)
+buttons.append(button_4)
+
+# a shadowrect
+button_5 = Button(x=BUTTON_MARGIN*2+BUTTON_WIDTH, y=BUTTON_MARGIN*2+BUTTON_HEIGHT,
+                  width=BUTTON_WIDTH, height=BUTTON_HEIGHT,
+                  label="button5", label_font=font, style=Button.SHADOWRECT)
+buttons.append(button_5)
+
+# a shadowroundrect
+button_6 = Button(x=BUTTON_MARGIN*3+2*BUTTON_WIDTH, y=BUTTON_MARGIN*2+BUTTON_HEIGHT,
+                  width=BUTTON_WIDTH, height=BUTTON_HEIGHT,
+                  label="button5", label_font=font, style=Button.SHADOWROUNDRECT)
+buttons.append(button_6)
+
+
+
+for b in buttons:
+    splash.append(b.group)
+
+
+while True:
+    p = ts.touch_point
+    if p:
+        print(p)
+        for i, b in enumerate(buttons):
+            if b.contains(p):
+                print("Button %d pressed" % i)
+                b.selected = True
+            else:
+                b.selected = False