
import time
from . import lcdconfig

class LCD_0inch96(lcdconfig.RaspberryPi):

    width = 160
    height = 80
    def command(self, cmd):
        self.GPIO.output(self.DC_PIN, self.GPIO.LOW)
        self.spi_writebyte([cmd])
        
    def data(self, val):
        self.GPIO.output(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(0x11)
        time.sleep(0.1)
        self.command(0x21) 
        self.command(0x21) 

        self.command(0xB1) 
        self.data(0x05)
        self.data(0x3A)
        self.data(0x3A)

        self.command(0xB2)
        self.data(0x05)
        self.data(0x3A)
        self.data(0x3A)

        self.command(0xB3) 
        self.data(0x05)  
        self.data(0x3A)
        self.data(0x3A)
        self.data(0x05)
        self.data(0x3A)
        self.data(0x3A)

        self.command(0xB4)
        self.data(0x03)

        self.command(0xC0)
        self.data(0x62)
        self.data(0x02)
        self.data(0x04)

        self.command(0xC1)
        self.data(0xC0)

        self.command(0xC2)
        self.data(0x0D)
        self.data(0x00)

        self.command(0xC3)
        self.data(0x8D)
        self.data(0x6A)   

        self.command(0xC4)
        self.data(0x8D) 
        self.data(0xEE) 

        self.command(0xC5)
        self.data(0x0E)    

        self.command(0xE0)
        self.data(0x10)
        self.data(0x0E)
        self.data(0x02)
        self.data(0x03)
        self.data(0x0E)
        self.data(0x07)
        self.data(0x02)
        self.data(0x07)
        self.data(0x0A)
        self.data(0x12)
        self.data(0x27)
        self.data(0x37)
        self.data(0x00)
        self.data(0x0D)
        self.data(0x0E)
        self.data(0x10)

        self.command(0xE1)
        self.data(0x10)
        self.data(0x0E)
        self.data(0x03)
        self.data(0x03)
        self.data(0x0F)
        self.data(0x06)
        self.data(0x02)
        self.data(0x08)
        self.data(0x0A)
        self.data(0x13)
        self.data(0x26)
        self.data(0x36)
        self.data(0x00)
        self.data(0x0D)
        self.data(0x0E)
        self.data(0x10)

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

        self.command(0x36)
        self.data(0xA8)

        self.command(0x29) 
  
    def SetWindows(self, Xstart, Ystart, Xend, Yend):
        #set the X coordinates
        Xstart=Xstart+1
        Xend=Xend+1
        Ystart=Ystart+26
        Yend=Yend+26
        self.command(0x2A)
        self.data(0x00)               #Set the horizontal starting point to the high octet
        self.data(Xstart & 0xff)      #Set the horizontal starting point to the low octet
        self.data(0x00)               #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(0x00)
        self.data((Ystart & 0xff))
        self.data(0x00)
        self.data((Yend - 1) & 0xff )

        self.command(0x2C)    
        
    def ShowImage(self,Image):
        """Set buffer to value of Python Imaging Library image."""
        """Write display buffer to physical display"""
        imwidth, imheight = Image.size
        if imwidth != self.width or imheight != self.height:
            if imwidth != self.height or imheight != self.width:
                raise ValueError('Image must be same dimensions as display \
                ({0}x{1}).' .format(self.height,self.width))
            else:
                img = self.np.asarray(Image)
                pix = self.np.zeros((self.width,self.hight,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))               
        else:       
            img = self.np.asarray(Image)
            pix = self.np.zeros((self.height,self.width,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.SetWindows ( 0, 0, self.width, self.height)
        self.digital_write(self.DC_PIN,self.GPIO.HIGH)

        for i in range(0,len(pix),4096):#The length is 160*160*2 Actually 160*80*2 So take 2
            self.spi_writebyte(pix[i:i+4096])
	
        
    def clear(self):
        """Clear contents of image buffer"""
        _buffer = [0xff]*(self.width * self.height )
        self.SetWindows ( 0, 0, self.width, self.height)
        self.digital_write(self.DC_PIN,self.GPIO.HIGH)
        for i in range(0,len(_buffer),4096):
            self.spi_writebyte(_buffer[i:i+4096])		
