# text2fit.py + rotate ^ 2016.05

# text2fit.py + rotate ^ 2016.05

from appuifw import *
import e32,audio,appuifw,os,sys,key_codes,time,math,random,graphics,sensor,copy
from graphics import *

class cv():
    pixel=-1,-1
    xyz=(0,0,0)
    x=0
    y=0
    light=0
    evt=None
    tmp=0
    sw=0
    init=1
    padx,pady=0,0
    up=-1
    ori='portrait'
cv=cv()

def quit():
    app_lock.signal()
app_lock = e32.Ao_lock()
app.exit_key_handler = quit

def draw(rect):
    if img:
        canvas.blit(img)

def e_callback(event):
    cv.pixel = event['pos']

img=None
def show_cv():
    global canvas, img
    app.screen = 'large'
    app.directional_pad = False
    app.orientation=cv.ori
    app.body = canvas = Canvas(redraw_callback=draw, event_callback=e_callback)
    img = Image.new(canvas.size)
    cv.init=1
show_cv()

def z_ori():
    if cv.ori is 'portrait': cv.ori='landscape'
    else: cv.ori='portrait'
    show_cv()
    demo()

def z_fit(a,b,c):
    pl=canvas.measure_text(a,font=b)[1] # pixel length
    cl=canvas.measure_text(a,font=b,maxwidth=c)[2] # chr length
    ### note: maxwidth is not generic
    return cl,pl
def text2wrap(prev,new=None,gap=20,setfont=(u"dense",30)):
    if type(prev) in [int,tuple]:
        color=prev
        if new:
            if gap is not 20:
                setfont=gap
            gap=new
        y=40
        for gen in wrapped:
            img.text((gap,y),u''+gen,font=setfont,fill=color)
            y += 36
    else:
        ww=canvas.size[0]-gap*2
        if type(prev) != list: prev=[]
        def wrap_gen(line):
            tmp=''
            if prev: tmp=prev.pop(-1)+' '
            while 1:
                cl,pl=z_fit(tmp+line,setfont,ww)
                if pl > ww:
                    if tmp:
                        prev.append(tmp)
                        tmp=''
                    else:
                        prev.append(line[:cl])
                        line=line[cl:]
                else:
                    break
            prev.append(tmp+line)

        if ' ' in new: new=new.split()
        else: new=[new]
        for data in new: wrap_gen(u''+data)
        _gv = globals()
        _gv['wrapped']=prev[:]
#

appuifw.app.menu=[(u'Rotate Display',z_ori)]

def demo():
    img.clear(0x5555ff)

    o1st_entry='This is a "measure_text" wrap method example whereas...'
    o2nd_entry=['blahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblahblah',
            'should','appear','segmented','to','stay','within','the','given','boundary.']
    #
    text2wrap('',o1st_entry)
    for divided in o2nd_entry:
        text2wrap(wrapped,divided)
    text2wrap(0xffffff)
    draw(())
demo()

app_lock.wait()