
import time
from . import lcdconfig

class LCD_2inch4(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(0x11);'''Sleep out'''
	
        self.command(0xCF);
        self.data(0x00);
        self.data(0xC1);
        self.data(0X30);
        self.command(0xED);
        self.data(0x64);
        self.data(0x03);
        self.data(0X12);
        self.data(0X81);
        self.command(0xE8);
        self.data(0x85);
        self.data(0x00);
        self.data(0x79);
        self.command(0xCB);
        self.data(0x39);
        self.data(0x2C);
        self.data(0x00);
        self.data(0x34);
        self.data(0x02);
        self.command(0xF7);
        self.data(0x20);
        self.command(0xEA);
        self.data(0x00);
        self.data(0x00);
        self.command(0xC0);'''Power control'''
        self.data(0x1D);'''VRH[5:0]'''
        self.command(0xC1);'''Power control'''
        self.data(0x12);'''SAP[2:0];BT[3:0]'''
        self.command(0xC5);'''VCM control'''
        self.data(0x33);
        self.data(0x3F);
        self.command(0xC7);'''VCM control'''
        self.data(0x92);
        self.command(0x3A);'''Memory Access Control'''
        self.data(0x55);
        self.command(0x36);'''Memory Access Control'''
        self.data(0x08);
        self.command(0xB1);
        self.data(0x00);
        self.data(0x12);
        self.command(0xB6);'''Display Function Control'''
        self.data(0x0A);
        self.data(0xA2);

        self.command(0x44);
        self.data(0x02);

        self.command(0xF2);'''3Gamma Function Disable'''
        self.data(0x00);
        self.command(0x26);'''Gamma curve selected'''
        self.data(0x01);
        self.command(0xE0);'''Set Gamma'''
        self.data(0x0F);
        self.data(0x22);
        self.data(0x1C);
        self.data(0x1B);
        self.data(0x08);
        self.data(0x0F);
        self.data(0x48);
        self.data(0xB8);
        self.data(0x34);
        self.data(0x05);
        self.data(0x0C);
        self.data(0x09);
        self.data(0x0F);
        self.data(0x07);
        self.data(0x00);
        self.command(0XE1);'''Set Gamma'''
        self.data(0x00);
        self.data(0x23);
        self.data(0x24);
        self.data(0x07);
        self.data(0x10);
        self.data(0x07);
        self.data(0x38);
        self.data(0x47);
        self.data(0x4B);
        self.data(0x0A);
        self.data(0x13);
        self.data(0x06);
        self.data(0x30);
        self.data(0x38);
        self.data(0x0F);
        self.command(0x29);'''Display on'''

  
    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(0x78) 
            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(0x08) 
            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.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])	
        
