image ssd and nju

gfxlcd/demos/ili_image.py

@@ -15,6 +15,5 @@ LED = 6
 RPi.GPIO.setup(LED, RPi.GPIO.OUT)
 RPi.GPIO.output(LED, 1)
 
-image_file = Image.open("japan_temple_240x320.jpg")
-image_file = image_file.convert('RGB')
+image_file = Image.open("assets/japan_temple_240x320.jpg")
 lcd_tft.draw_image(0, 0, image_file)

gfxlcd/demos/nju_image.py

@@ -0,0 +1,20 @@
+import RPi.GPIO
+import sys
+import random
+sys.path.append("../../")
+from gfxlcd.driver.nju6450.gpio import GPIO
+from gfxlcd.driver.nju6450.nju6450 import NJU6450
+RPi.GPIO.setmode(RPi.GPIO.BCM)
+
+from PIL import Image
+
+lcd_nju = NJU6450(122, 32, GPIO())
+lcd_nju.init()
+lcd_nju.auto_flush = False
+
+image_file = Image.open("assets/dsp2017_122_29.png")
+# lcd_nju.threshold = 50
+# lcd_nju.transparency_color = [110, 57]
+lcd_nju.draw_image(0, 0, image_file)
+
+lcd_nju.flush(True)

gfxlcd/demos/ssd_image.py

@@ -0,0 +1,23 @@
+import RPi.GPIO
+import sys
+sys.path.append("../../")
+from gfxlcd.driver.ssd1306.spi import SPI
+from gfxlcd.driver.ssd1306.ssd1306 import SSD1306
+RPi.GPIO.setmode(RPi.GPIO.BCM)
+from PIL import Image
+
+lcd_oled = SSD1306(128, 64, SPI())
+lcd_oled.init()
+lcd_oled.auto_flush = False
+
+image_file = Image.open("assets/dsp2017_101_64.png")
+
+lcd_oled.threshold = 50
+
+lcd_oled.threshold = 0
+# lcd_oled.transparency_color = [110, 57] #110 #[110, 57]
+# lcd_oled.threshold = 255
+
+lcd_oled.draw_image(10, 0, image_file)
+
+lcd_oled.flush(True)

gfxlcd/drawing/page.py

@@ -113,3 +113,26 @@ class Page(Pixel, metaclass=abc.ABCMeta):
     def flush(self, force=None):
         """flush buffer to the screen"""
         pass
+
+    def draw_image(self, pos_x, pos_y, image):
+        """draw a PIL image"""
+        image_file = image.convert('L')
+        width, height = image_file.size
+        offset_x = 0
+        offset_y = 0
+        for stream in list(image_file.getdata()):
+            if stream > self.options['threshold'] and not self._is_transparent(stream):
+                self.draw_pixel(pos_x + offset_x, pos_y + offset_y)
+            offset_x += 1
+            if offset_x > width - 1:
+                offset_x = 0
+                offset_y += 1
+
+    def _is_transparent(self, color):
+        """check if color is a transparency color"""
+        if type(self.options['transparency_color']) == int and color == self.options['transparency_color']:
+            return True
+        elif type(self.options['transparency_color']) == list and color in self.options['transparency_color']:
+            return True
+
+        return False

gfxlcd/drawing/pixel.py

@@ -12,6 +12,28 @@ class Pixel(object):
         self.options['background_color'] = {
             'R': 0, 'G': 0, 'B': 0,
         }
+        self.options['threshold'] = 50
+        self.options['transparency_color'] = None
+
+    @property
+    def threshold(self):
+        """get threshold for B&W conversion"""
+        return self.options['threshold']
+
+    @threshold.setter
+    def threshold(self, threshold):
+        """set B&W threshold for conversion """
+        self.options['threshold'] = threshold
+
+    @property
+    def transparency_color(self):
+        """get transparency color"""
+        return self.options['transparency_color']
+
+    @transparency_color.setter
+    def transparency_color(self, transparency_color):
+        """set transparency color """
+        self.options['transparency_color'] = transparency_color
 
     def draw_pixel(self, pos_x, pos_y):
         """dummy fuction"""