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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# ImageProcessor.py por:
# Flavio Danesse <fdanesse@gmail.com>
# CeibalJAM! - Uruguay
# Basado en código de: Keshav Sharma <keshav7890@gmail.com> & Vaibhav Sharma
import gtk, pygtk, gobject, sys, StringIO, logging, random, gst, pygame, time, platform
if 'olpc' in platform.platform():
from PIL import Image,ImageEnhance,ImageFont,ImageFilter,ImageOps, ImageDraw
else:
import Image,ImageEnhance,ImageFont,ImageFilter,ImageOps, ImageDraw
def pixbuftoImage(pb):
width,height = pb.get_width(),pb.get_height()
return Image.fromstring("RGB",(width,height),pb.get_pixels() )
def imagetopixbuf(im):
file1 = StringIO.StringIO()
im.save(file1, "ppm")
contents = file1.getvalue()
file1.close()
loader = gtk.gdk.PixbufLoader("pnm")
loader.write(contents, len(contents))
pixbuf = loader.get_pixbuf()
loader.close()
return pixbuf
class ImageProcessor(gtk.DrawingArea):
__gsignals__ = {'expose-event' : ('override')}
def __init__(self):
gtk.DrawingArea.__init__(self)
self.pixbuf = None
self.pixbufs_stack = []
self.temp_pixbuf_index = 0
self.zoom = 1
self.temp_pixbuf = None
self.tamanio = (0,0)
def reset(self):
self.pixbuf = None
self.pixbufs_stack = []
self.temp_pixbuf_index = 0
self.zoom = 1
self.temp_pixbuf = None
self.tamanio = (0,0)
def set_pixbuf( self , pixbuf ):
self.reset()
self.pixbuf = pixbuf
self.tamanio = (self.pixbuf.get_width(), self.pixbuf.get_height())
pixbuf = self.pixbuf.copy()
self.add_pixbuf_stack(pixbuf)
self.window.invalidate_rect( self.get_allocation(), True )
self.window.process_updates( True )
def add_pixbuf_stack(self, pixbuf):
if self.pixbufs_stack:
if self.temp_pixbuf_index != self.pixbufs_stack.index(self.pixbufs_stack[-1]):
self.pixbufs_stack = self.pixbufs_stack[0:self.temp_pixbuf_index+1]
self.pixbufs_stack.append(pixbuf)
self.temp_pixbuf_index = self.pixbufs_stack.index(pixbuf)
else:
self.pixbufs_stack.append(pixbuf)
while len(self.pixbufs_stack) > 10:
self.pixbufs_stack.remove(self.pixbufs_stack[0])
self.temp_pixbuf_index = self.pixbufs_stack.index(pixbuf)
else:
self.pixbufs_stack.append(pixbuf)
while len(self.pixbufs_stack) > 10:
self.pixbufs_stack.remove(self.pixbufs_stack[0])
self.temp_pixbuf_index = self.pixbufs_stack.index(pixbuf)
def do_expose_event(self, event):
ctx = self.window.cairo_create()
ctx.rectangle(event.area.x, event.area.y, event.area.width, event.area.height)
ctx.clip()
self.draw(ctx)
def draw(self, ctx):
if not self.pixbufs_stack: return
x, y, w, h = self.get_allocation()
# Actualizar según zoom
width, height = self.tamanio
self.set_size_request(width, height)
self.temp_pixbuf = self.pixbufs_stack[self.temp_pixbuf_index]
pixbuf = self.temp_pixbuf.scale_simple(width, height, gtk.gdk.INTERP_TILES)
rect = self.parent.get_allocation()
if rect.width > width:
x = int(((rect.width - x) - width) / 2)
if rect.height > height:
y = int(((rect.height - y) - height) / 2)
ctx.set_source_pixbuf(pixbuf, x, y)
ctx.paint()
def set_zoom(self, zoom):
if not self.pixbufs_stack: return
self.zoom = zoom
if self.zoom <= 0.2: self.zoom = 0.2
self.tamanio = (int(self.temp_pixbuf.get_width() * self.zoom), int(self.temp_pixbuf.get_height() * self.zoom))
self.window.invalidate_rect(self.get_allocation(), True)
self.window.process_updates(True)
def set_angulo(self, angulo):
if not self.pixbufs_stack: return
if angulo > 0:
rotacion = gtk.gdk.PIXBUF_ROTATE_COUNTERCLOCKWISE
else:
rotacion = gtk.gdk.PIXBUF_ROTATE_CLOCKWISE
pixbuf = self.temp_pixbuf.copy().rotate_simple(rotacion)
self.tamanio = (int(pixbuf.get_width() * self.zoom), int(pixbuf.get_height() * self.zoom))
self.add_pixbuf_stack(pixbuf)
self.window.invalidate_rect(self.get_allocation(), True)
self.window.process_updates(True)
def zoom_in(self):
if not self.pixbufs_stack: return
self.set_zoom(self.zoom + 0.2)
def zoom_out(self):
if not self.pixbufs_stack: return
self.set_zoom(self.zoom - 0.2)
def grey(self, value):
if not self.pixbufs_stack: return
im = pixbuftoImage(self.temp_pixbuf.copy())
im.convert("RGB")
r, g, b = im.split()
im = Image.merge("RGB", (g,g,g))
pixbuf = imagetopixbuf(im)
self.add_pixbuf_stack(pixbuf)
self.window.invalidate_rect(self.get_allocation(), True)
self.window.process_updates(True)
def image_undo(self):
if self.pixbufs_stack and self.temp_pixbuf_index > 0:
self.temp_pixbuf_index -= 1
pixbuf = self.pixbufs_stack[self.temp_pixbuf_index]
self.tamanio = (int(pixbuf.get_width() * self.zoom), int(pixbuf.get_height() * self.zoom))
self.window.invalidate_rect(self.get_allocation(), True)
self.window.process_updates(True)
def image_redo(self):
if self.pixbufs_stack and self.temp_pixbuf_index < len(self.pixbufs_stack)-1:
self.temp_pixbuf_index += 1
pixbuf = self.pixbufs_stack[self.temp_pixbuf_index]
self.tamanio = (int(pixbuf.get_width() * self.zoom), int(pixbuf.get_height() * self.zoom))
self.window.invalidate_rect(self.get_allocation(), True)
self.window.process_updates(True)
def image_Blur(self,value):
if not self.pixbufs_stack: return
im = pixbuftoImage(self.temp_pixbuf.copy())
im = im.filter(ImageFilter.BLUR)
pixbuf = imagetopixbuf(im)
self.add_pixbuf_stack(pixbuf)
self.window.invalidate_rect(self.get_allocation(), True)
self.window.process_updates(True)
def image_Transpose(self,value):
if not self.pixbufs_stack: return
im = pixbuftoImage(self.temp_pixbuf.copy())
im = im.transpose(Image.FLIP_LEFT_RIGHT)
pixbuf = imagetopixbuf(im)
self.add_pixbuf_stack(pixbuf)
self.window.invalidate_rect(self.get_allocation(), True)
self.window.process_updates(True)
def image_Contour(self,value):
if not self.pixbufs_stack: return
im = pixbuftoImage(self.temp_pixbuf.copy())
im = im.filter(ImageFilter.CONTOUR)
pixbuf = imagetopixbuf(im)
self.add_pixbuf_stack(pixbuf)
self.window.invalidate_rect(self.get_allocation(), True)
self.window.process_updates(True)
def image_Finedges(self,value):
if not self.pixbufs_stack: return
im = pixbuftoImage(self.temp_pixbuf.copy())
im = im.filter(ImageFilter.FIND_EDGES)
pixbuf = imagetopixbuf(im)
self.add_pixbuf_stack(pixbuf)
self.window.invalidate_rect(self.get_allocation(), True)
self.window.process_updates(True)
def image_Solarize(self,value):
if not self.pixbufs_stack: return
im = pixbuftoImage(self.temp_pixbuf.copy())
im = ImageOps.solarize(im, threshold=128)
pixbuf = imagetopixbuf(im)
self.add_pixbuf_stack(pixbuf)
self.window.invalidate_rect(self.get_allocation(), True)
self.window.process_updates(True)
def image_Sharpen(self,value):
if not self.pixbufs_stack: return
im = pixbuftoImage(self.temp_pixbuf.copy())
im = im.filter(ImageFilter.SHARPEN)
pixbuf = imagetopixbuf(im)
self.add_pixbuf_stack(pixbuf)
self.window.invalidate_rect(self.get_allocation(), True)
self.window.process_updates(True)
def image_Ambross(self,value):
if not self.pixbufs_stack: return
im = pixbuftoImage(self.temp_pixbuf.copy())
im = im.filter(ImageFilter.EMBOSS)
pixbuf = imagetopixbuf(im)
self.add_pixbuf_stack(pixbuf)
self.window.invalidate_rect(self.get_allocation(), True)
self.window.process_updates(True)
def image_Invert(self,value):
if not self.pixbufs_stack: return
im = pixbuftoImage(self.temp_pixbuf.copy())
im = ImageOps.invert(im)
pixbuf = imagetopixbuf(im)
self.add_pixbuf_stack(pixbuf)
self.window.invalidate_rect(self.get_allocation(), True)
self.window.process_updates(True)
def guardar_archivo(self, path):
if not self.pixbufs_stack or not path: return
path = "%s%s" % (path, ".png")
self.pixbufs_stack[self.temp_pixbuf_index].save(path, "png")
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