# text2fit.py

# text2fit.py

from appuifw import *
from graphics import *
import e32,key_codes

lock=e32.Ao_lock()


def draw(rect):
    try: canvas.blit(img)
    except: pass

def exit(pos):
    app_lock.signal()

def redraw():
    global xm,ym
    ym,xm,zm=(sens.x/2.0,sens.y/2.0,sens.z/2.0) ### Z axis is not needed

img=Image.new((640,360))
app.directional_pad=False
canvas=Canvas(redraw_callback=draw)
app.body=canvas
app.orientation='landscape'
app.screen='full'

canvas.bind(key_codes.EButton1Down,exit)

width=canvas.size[0]-20
img.clear(0x555555ff)

setfont=(u"dense",30,None)

txtEntry=[u'This is a "measure_text" wrap method example whereas...']
words=[u'blahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblah',
        u'should',u'appear',u'segmented',u'to',u'stay',u'within',u'the',u'given',u'boundary.']

def text_wrap(txtEntry=None):
    global linewrap
    w2=word[:]
    try:
        if linewrap:
            pass
    except:
        linewrap=[u'']
        try:
            txtEntry=''.join(txtEntry)
            txtEntry=txtEntry.split() # needed to be converted to a string
            for line in txtEntry:
                active=linewrap[0]+line
                fits=canvas.measure_text(active,font=setfont)[1]
                if fits > width:
                    while 1:
                        fits=canvas.measure_text(line,font=setfont)[1]
                        kb=canvas.measure_text(line,font=setfont,maxwidth=width)[2]
                        if fits > width:
                            linewrap.insert(0,line[:kb])
                            line=line[kb:]
                        else:
                            break
                    linewrap.insert(0,line+' ')
                else: # fits entire entry
                    linewrap[0]+=line+' '
        except:
            pass

    active=linewrap[0]+w2
    fits=canvas.measure_text(active,font=setfont)[1]
    if fits > width:
        while 1:
            fits=canvas.measure_text(w2,font=setfont)[1]
            kb=canvas.measure_text(w2,font=setfont,maxwidth=width)[2]
            if fits > width:
                linewrap.insert(0,w2[:kb])
                w2=w2[kb:]
            else:
                break
        linewrap.insert(0,w2+' ')
    else: # fits entire entry
        linewrap[0]+=w2+' '

    y=40
    LnWr=linewrap[:]
    LnWr.reverse()
    img.clear(0x555555ff)
    for line in LnWr:
        img.text((10,y),line,font=setfont,fill=0xffffff) # text on blue img
        y += 36

### demo

for word in words:
    text_wrap(txtEntry)
canvas.blit(img)


e32.ao_yield()

app_lock=e32.Ao_lock()
app_lock.wait()