dmonde/lib/ressources.py

#from __future__ import unicode_literals
# -*- coding: utf-8 -*-
"""controle l'acces aux ressources variables (sons, images, sauvegardes)"""
import os
from PyQt4.QtGui import QPixmap

#le repertoire de l'application
ppal = os.path.abspath(os.path.join(os.path.dirname(os.path.realpath(__file__)), os.pardir))

def repApp():
    return ppal

def repRessources():
    return ["ressources\\commun", \
            "ressources\\dd35", \
            "parties\\Partie1\\ressources"]

class Ressource(object):
    """classe de base des ressources utilisees"""
    def __init__(self, cheminR):
        self._cheminR = cheminR

    def chemin(self):
        """renvoie le chemin absolu vers le fichier"""
        return os.path.join(repApp(), self._cheminR)

    def nom(self):
        #on vire l'extension
        nom = ""
        for car in reversed(self._cheminR):
            if car in ["\\", "/"]:
                break
            else:
                nom = car + nom
        nom = os.path.splitext(nom)[0]
        return nom

    def repR(self):
        """renvoie le repertoire, presente de maniere relative"""
        return os.path.dirname(self._cheminR)
        
    def extension(self):
        return os.path.splitext(self._cheminR)[1]

    def definition(self):
        return self._cheminR
                
    def existe(self):
        return os.path.isfile(self.chemin())

    def estValide(self):
        return self.existe()

class Image(Ressource):
    """classe de base des ressources utilisees"""
    def __init__(self, cheminR):
        super(Image, self).__init__(cheminR)

    def pix(self, l = 0, h = 0):
        pix = QPixmap(self.chemin())
        if not pix.isNull():
            if l > 0 and h > 0:
                pix.scaled(l, h)
            elif l > 0 and h == 0:
                pix.scaledToWidth(l)
            elif l == 0 and h > 0:
                pix.scaledToHeigth(l)                
        return pix

    def estValide(self):
        return self.existe() and \
               self.extension() in [".png", ".jpg", ".gif"]



r = Image("ressources\\commun\\orc.png")
print r.repR()