import time
import lcdconfig


class LCD_2inch(lcdconfig.RaspberryPi):

    width = 240
    height = 320
    def command(self, cmd):
        self.digital_write(self.DC_PIN, self.GPIO.LOW)
        self.spi_writebyte([cmd])

    def data(self, val):
        self.digital_write(self.DC_PIN, self.GPIO.HIGH)
        self.spi_writebyte([val])
    def reset(self):
        """Reset the display"""
        self.GPIO.output(self.RST_PIN,self.GPIO.HIGH)
        time.sleep(0.01)
        self.GPIO.output(self.RST_PIN,self.GPIO.LOW)
        time.sleep(0.01)
        self.GPIO.output(self.RST_PIN,self.GPIO.HIGH)
        time.sleep(0.01)

    def Init(self):
        """Initialize dispaly"""
        self.module_init()
        self.reset()

        self.command(0x36)
        self.data(0x00)

        self.command(0x3A)
        self.data(0x05)

        self.command(0x21)

        self.command(0x2A)
        self.data(0x00)
        self.data(0x00)
        self.data(0x01)
        self.data(0x3F)

        self.command(0x2B)
        self.data(0x00)
        self.data(0x00)
        self.data(0x00)
        self.data(0xEF)

        self.command(0xB2)
        self.data(0x0C)
        self.data(0x0C)
        self.data(0x00)
        self.data(0x33)
        self.data(0x33)

        self.command(0xB7)
        self.data(0x35)

        self.command(0xBB)
        self.data(0x1F)

        self.command(0xC0)
        self.data(0x2C)

        self.command(0xC2)
        self.data(0x01)

        self.command(0xC3)
        self.data(0x12)

        self.command(0xC4)
        self.data(0x20)

        self.command(0xC6)
        self.data(0x0F)

        self.command(0xD0)
        self.data(0xA4)
        self.data(0xA1)

        self.command(0xE0)
        self.data(0xD0)
        self.data(0x08)
        self.data(0x11)
        self.data(0x08)
        self.data(0x0C)
        self.data(0x15)
        self.data(0x39)
        self.data(0x33)
        self.data(0x50)
        self.data(0x36)
        self.data(0x13)
        self.data(0x14)
        self.data(0x29)
        self.data(0x2D)

        self.command(0xE1)
        self.data(0xD0)
        self.data(0x08)
        self.data(0x10)
        self.data(0x08)
        self.data(0x06)
        self.data(0x06)
        self.data(0x39)
        self.data(0x44)
        self.data(0x51)
        self.data(0x0B)
        self.data(0x16)
        self.data(0x14)
        self.data(0x2F)
        self.data(0x31)
        self.command(0x21)

        self.command(0x11)

        self.command(0x29)


    def SetWindows(self, Xstart, Ystart, Xend, Yend):
        #set the X coordinates
        self.command(0x2A)
        self.data(Xstart>>8)        #Set the horizontal starting point to the high octet
        self.data(Xstart & 0xff)    #Set the horizontal starting point to the low octet
        self.data(Xend>>8)          #Set the horizontal end to the high octet
        self.data((Xend - 1) & 0xff)#Set the horizontal end to the low octet

        #set the Y coordinates
        self.command(0x2B)
        self.data(Ystart>>8)
        self.data((Ystart & 0xff))
        self.data(Yend>>8)
        self.data((Yend - 1) & 0xff )

        self.command(0x2C)

    def ShowImage(self,Image,Xstart=0,Ystart=0):
        """Set buffer to value of Python Imaging Library image."""
        """Write display buffer to physical display"""
        imwidth, imheight = Image.size
        if imwidth == self.height and imheight ==  self.width:
            img = self.np.asarray(Image)
            pix = self.np.zeros((self.width, self.height,2), dtype = self.np.uint8)
            #RGB888 >> RGB565
            pix[...,[0]] = self.np.add(self.np.bitwise_and(img[...,[0]],0xF8),self.np.right_shift(img[...,[1]],5))
            pix[...,[1]] = self.np.add(self.np.bitwise_and(self.np.left_shift(img[...,[1]],3),0xE0), self.np.right_shift(img[...,[2]],3))
            pix = pix.flatten().tolist()

            self.command(0x36)
            self.data(0x70)
            self.SetWindows ( 0, 0, self.height,self.width)
            self.digital_write(self.DC_PIN,self.GPIO.HIGH)
            for i in range(0,len(pix),4096):
                self.spi_writebyte(pix[i:i+4096])

        else :
            img = self.np.asarray(Image)
            pix = self.np.zeros((imheight,imwidth , 2), dtype = self.np.uint8)

            pix[...,[0]] = self.np.add(self.np.bitwise_and(img[...,[0]],0xF8),self.np.right_shift(img[...,[1]],5))
            pix[...,[1]] = self.np.add(self.np.bitwise_and(self.np.left_shift(img[...,[1]],3),0xE0), self.np.right_shift(img[...,[2]],3))

            pix = pix.flatten().tolist()

            self.command(0x36)
            self.data(0x00)
            self.SetWindows ( 0, 0, self.width, self.height)
            self.digital_write(self.DC_PIN,self.GPIO.HIGH)
            for i in range(0,len(pix),4096):
                self.spi_writebyte(pix[i:i+4096])

    def clear(self):
        """Clear contents of image buffer"""
        _buffer = [0xff]*(self.width * self.height * 2)
        self.SetWindows ( 0, 0, self.height, self.width)
        self.digital_write(self.DC_PIN,self.GPIO.HIGH)
        for i in range(0,len(_buffer),4096):
            self.spi_writebyte(_buffer[i:i+4096])