jm2l/jm2l/badge.py

# -*- coding: utf8 -*-
from pyramid.httpexceptions import HTTPNotFound, HTTPForbidden
from pyramid.response import Response
import cStringIO as StringIO
from pyramid.view import view_config
from .models import DBSession, User
from reportlab.pdfgen import canvas
from reportlab.pdfbase import pdfmetrics
from reportlab.pdfbase.ttfonts import TTFont
from reportlab.lib.units import mm
import qrcode
import subprocess
from .upload import MediaPath
# Create PDF container
EXPIRATION_TIME = 300 # seconds
WIDTH = 85 * mm
HEIGHT = 60 * mm
ICONSIZE = 10 * mm

def JM2L_Logo(canvas, Offset=(0,0)):
    OffX, OffY = Offset
    logoobject = canvas.beginText()
    logoobject.setFont('Logo', 32)
    logoobject.setFillColorRGB(.83,0,.33)
    logoobject.setTextOrigin(OffX+5, OffY+17)
    logoobject.textLines("JM2L")
    canvas.drawText(logoobject)
    
    yearobject = canvas.beginText()
    yearobject.setFont("Helvetica-Bold", 10)
    yearobject.setFillColorRGB(1,1,1)
    yearobject.setTextRenderMode(0)
    yearobject.setTextOrigin(OffX+12 , OffY+35)
    yearobject.setWordSpace(13)
    yearobject.textLines("2 0 1 5")
    canvas.drawText(yearobject)

def Tiers_Logo(canvas, DispUser, StartPos=None, Offset=(0,0)):
    Border = 0
    OffX, OffY = Offset
    if StartPos is None:
        StartPos = ( 30 * mm, 2 )
    StartX, StartY = StartPos
    MaxX, MaxY = 34*mm, 18*mm
    num = 0
    canvas.setStrokeColorRGB(0.5,0.5,0.5)
    Logos = filter(lambda x:x.ThumbLinks, DispUser.tiers)[:3]
    # Should We compute a better positionning for logos ?
    DicPos = {}
    DicPos[1] = { 0:(1./2, 1./2) }
    DicPos[2] = { 0:(1./3, 1./2),   1:(2./3, 1./2) }
    DicPos[3] = { 0:(1./2, 1./4),   1:(1./3, 3./4),   2:(2./3, 3./4) }
    DicPos[4] = { 0:(1./3, 1./4),   1:(2./3, 1./4),   2:(1./3, 3./4), 
                  3:(2./3, 3./4) }
    DicPos[5] = { 0:(1./3, 1./4),      1:(2./3, 1./4),      2:(1./6, 3./4),
                  3:(3./6, 3./4),      4:(5./6, 3./4) }
    DicPos[6] = { 0:(1./6, 1./4),      1:(3./6, 1./4),      2:(5./6, 1./4),
                  3:(1./6, 3./4),      4:(3./6, 3./4),      5:(5./6, 3./4) }
    DicPos[7] = { 0:(1./6, 1./4),      1:(3./6, 1./4),      2:(5./6, 1./4),
                  3:(1./8, 3./4),      4:(3./8, 3./4),      5:(5./8, 3./4),
                  6:(7./8, 3./4) }
    DicPos[8] = { 0:(1./8, 1./4),      1:(3./8, 1./4),      2:(5./8, 1./4),
                  3:(7./8, 1./4),      4:(1./8, 3./4),      5:(3./8, 3./4),
                  6:(5./8, 3./4),      7:(7./8, 3./4) }
    # draw overall border
    # canvas.roundRect(StartX, StartY, MaxX, MaxY, radius=2, stroke=True)
    for tiers in Logos:
        FileName = tiers.ThumbLinks.pop().split("/")[-1]
        ImagePath = "jm2l/upload/images/tiers/%s/%s" % (tiers.slug, FileName)        
        PosX = OffX+StartX + DicPos[len(Logos)][num][0] * MaxX - (ICONSIZE+Border)/2
        PosY = OffY+StartY + DicPos[len(Logos)][num][1] * MaxY - (ICONSIZE+Border)/2
        canvas.setLineWidth(.1)
        if len(Logos)>1:
            size = ICONSIZE
        else:
            size = ICONSIZE*1.5
        canvas.drawImage(ImagePath, 
            PosX, PosY, size, size,\
            preserveAspectRatio=True, 
            anchor='c',
            mask='auto'
            )
        # draw icon border
        # canvas.roundRect(PosX, PosY, ICONSIZE, ICONSIZE, radius=2, stroke=True)
        num+=1

def QRCode(DispUser):
    qr = qrcode.QRCode(
        version=1,
        error_correction=qrcode.constants.ERROR_CORRECT_L,
        box_size=10,
        border=2,
    )
    # Data of QR code
    qr.add_data('http://jm2l.linux-azur.org/user/%s' % DispUser.slug)
    qr.make(fit=True)

    return qr.make_image()

def one_badge(c, DispUser, Offset=(0,0)):
    # Logo on Top
    JM2L_Logo(c, Offset)
    OffX, OffY = Offset
    
    c.rect(OffX-3, OffY-3, WIDTH+6, HEIGHT+6, fill=0, stroke=1)
    if DispUser.Staff:
        # Staff
        c.setFillColorRGB(.83,0,.33)
        c.rect(OffX-3, OffY+HEIGHT-30, WIDTH+6, 33, fill=1, stroke=0)
        c.setFillColorRGB(1,1,1)
        c.setFont('Liberation', 30)
        c.drawCentredString(OffX+WIDTH/2, OffY+HEIGHT-24, "STAFF")
    elif DispUser.is_Intervenant:
        # Intervenant
        c.setFillColorRGB(.21,.67,.78)
        c.rect(OffX-3, OffY+HEIGHT-30, WIDTH+6, 33, fill=1, stroke=0)
        c.setFillColorRGB(1,1,1)
        c.setFont('Liberation', 30)
        c.drawCentredString(OffX+WIDTH/2, OffY+HEIGHT-24, "Intervenant")
    elif DispUser.is_crew:
        # Benevole
        c.setFillColorRGB(.18,.76,.23)
        c.rect(OffX-3, OffY+HEIGHT-30, WIDTH+6, 33, fill=1, stroke=0)
        c.setFillColorRGB(1,1,1)
        c.setFont('Liberation', 30)
        c.drawCentredString(OffX+WIDTH/2, OffY+HEIGHT-24, "Bénévole")
    else:
        # Visiteur
        c.setFillColorRGB(.8,.8,.8)
        c.rect(OffX-3, OffY+HEIGHT-30, WIDTH+6, 33, fill=1, stroke=0)
        c.setFillColorRGB(1,1,1)
        c.setFont('Liberation', 30)
        c.drawCentredString(OffX+WIDTH/2, OffY+HEIGHT-24, "Visiteur")

    c.restoreState()
    
    c.setFont('Liberation', 18)
    c.setStrokeColorRGB(0,0,0)
    c.setFillColorRGB(0,0,0)
    # Feed Name and SurName
    if DispUser.prenom and DispUser.nom and len(DispUser.prenom) + len(DispUser.nom)>18:
        if DispUser.pseudo:
            c.drawCentredString(OffX+WIDTH/2, OffY+HEIGHT/2 + 0 * mm , "%s" % DispUser.prenom )
            #c.setFont('Courier', 17)
            c.drawCentredString(OffX+WIDTH/2, OffY+HEIGHT/2 - 8 * mm , "%s" % DispUser.nom )
        else:
            c.drawCentredString(OffX+WIDTH/2, OffY+HEIGHT/2 + 4 * mm , "%s" % DispUser.prenom )
            #c.setFont('Courier', 17)
            c.drawCentredString(OffX+WIDTH/2, OffY+HEIGHT/2 - 8 * mm , "%s" % DispUser.nom )            
    else:
        c.drawCentredString(OffX+WIDTH/2, OffY+HEIGHT/2 + 0 * mm , "%s %s" % (DispUser.prenom, DispUser.nom) )

    if DispUser.pseudo:
        c.setFont("Helvetica-Oblique", 18)
        c.drawCentredString(OffX+WIDTH/2, OffY+HEIGHT/2 + 10 * mm , "%s" % DispUser.pseudo )
    
    # Put QR code to user profile 
    c.drawInlineImage(QRCode(DispUser), \
            OffX+WIDTH - 20 * mm -5, OffY+5, \
            20 * mm, 20 * mm, \
            preserveAspectRatio=True, \
            anchor='s')
    
    Tiers_Logo(c, DispUser, None, Offset)   
    

@view_config(route_name='badge_user', http_cache = (EXPIRATION_TIME, {'public':True}))
def badge_user(request):
    isoutpng = request.params.get('png')
    user_slug = request.matchdict.get('user_slug', None)
    if user_slug is None or len(user_slug)==0:
        raise HTTPNotFound(u"Cet utilisateur n'a pas été reconnu")
    # Query database
    DispUser = User.by_slug(user_slug)
    if DispUser is None:
        raise HTTPNotFound()

    # Ok let's generate a PDF Badge
    
    # Register LiberationMono font
    ttfFile = "jm2l/static/fonts/LiberationMono-Regular.ttf"
    pdfmetrics.registerFont(TTFont("Liberation", ttfFile))
    # Import font
    ttfFile_Logo = "jm2l/static/fonts/PWTinselLetters.ttf"
    pdfmetrics.registerFont(TTFont("Logo", ttfFile_Logo))

    pdf = StringIO.StringIO()
    out_img = StringIO.StringIO()
  
    c = canvas.Canvas( pdf, pagesize=(WIDTH, HEIGHT) )
    c.translate(mm, mm)
    
    # Feed some metadata
    c.setCreator("linux-azur.org")
    c.setTitle("Badge")

    c.saveState()
    
    one_badge(c, DispUser)

    c.showPage()
    c.save()
    pdf.seek(0)
    if isoutpng:
        OutPDF = MediaPath().get_mediapath("badge", DispUser.uid, 'badge.pdf')
        OutPNG = MediaPath().get_mediapath("badge", DispUser.uid, 'badge.png')
        # Let's generate a png file for website
        with open( OutPDF ,'wb') as pdff:
            pdff.write(pdf.read())
    
        Command = ["convert","-density","150x150", OutPDF, OutPNG]
        subprocess.call(Command)
        
        with open( OutPNG, 'rb') as pngfile:
            out_img.write(pngfile.read())
        
        out_img.seek(0)
        return Response(app_iter=out_img, content_type = 'image/png' )
    else:
        return Response(app_iter=pdf, content_type = 'application/pdf' )


@view_config(route_name='all_badges')
def planche_badge(request):
    if request.user is None:
        # Don't answer to users that aren't logged
        raise HTTPForbidden(u'Vous devez vous identifier pour obtenir une réponse.')
    # Query database about selected Year.
    Users = DBSession.query(User)
    #            .join(User_Event)\
    #            .filter(User_Event.year_uid == year)

    # Register LiberationMono font
    ttfFile = "jm2l/static/fonts/LiberationMono-Regular.ttf"
    pdfmetrics.registerFont(TTFont("Liberation", ttfFile))
    # Import font
    ttfFile_Logo = "jm2l/static/fonts/PWTinselLetters.ttf"
    pdfmetrics.registerFont(TTFont("Logo", ttfFile_Logo))
    
    pdf = StringIO.StringIO()

    FULLWIDTH = 210 * mm
    FULLHEIGHT = 297 * mm

    c = canvas.Canvas( pdf, pagesize=(FULLWIDTH, FULLHEIGHT) )
    c.translate(mm, mm)
    
    # Feed some metadata
    c.setCreator("linux-azur.org")
    c.setTitle("Badge")
    t=0
    ListUser = filter(lambda x: x.is_Intervenant or x.Staff or x.is_crew, Users)
    for num, DispUser in enumerate(ListUser):
        c.saveState()
        Offsets = (((num-t)%2)*(WIDTH+40)+40, ((num-t)/2)*(HEIGHT+25)+40)
        one_badge(c, DispUser, Offsets)
        if num%8==7:
            t=num+1
            c.showPage()

    c.showPage()
    c.save()
    pdf.seek(0)
    return Response(app_iter=pdf, content_type = 'application/pdf' )