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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# widgets.py
#
# Copyright 2012 Santiago Daniel Francis <francis@sugarlabs.org>
#
# 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 3 of the License.
#
# 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 Street, Fifth Floor, Boston,
# MA 02110-1301, USA.
#
#import tempfile
import gobject
import gtk
class ImageEditor(gtk.Notebook):
__gsignals__ = {"get-image-from-galery": (gobject.SIGNAL_RUN_LAST,
gobject.TYPE_PYOBJECT,
(gobject.TYPE_STRING,)),
"load-toolbar": (gobject.SIGNAL_RUN_LAST,
gobject.TYPE_PYOBJECT,
tuple())}
position = 0
def __init__(self):
super(ImageEditor, self).__init__()
self.set_show_border(True)
self.toolbar = None
drag_label = gtk.Label("Drag here an image")
drag_label.drag_dest_set(gtk.DEST_DEFAULT_MOTION |
gtk.DEST_DEFAULT_HIGHLIGHT |
gtk.DEST_DEFAULT_DROP,
[("text/plain",
0,
80)],
gtk.gdk.ACTION_COPY)
drag_label.connect("drag_data_received", self.image_received)
drag_label.show()
self.append_page(drag_label)
self.scrolled_window = gtk.ScrolledWindow()
self.scrolled_window.set_policy(gtk.POLICY_AUTOMATIC,
gtk.POLICY_AUTOMATIC)
self.image_widget = gtk.Image()
self.image_widget.show()
self.scrolled_window.add_with_viewport(self.image_widget)
self.scrolled_window.show()
self.append_page(self.scrolled_window)
self.set_show_tabs(False)
def change_width(self, widget):
if self.link_values_button.get_active():
# Cross multiplication : Rule of three
# self.width - self.height
# new_value - (new_height)
new_value = widget.get_value()
new_height = int(round(new_value *\
float(self.height) /\
float(self.width)))
self.height_entry.set_value(new_height)
self.rescale_image()
def change_height(self, widget):
if self.link_values_button.get_active():
new_value = widget.get_value()
new_width = int(round(new_value *\
float(self.width) /\
float(self.height)))
self.width_entry.set_value(new_width)
self.rescale_image()
def image_received(self,
widget,
context,
x,
y,
selection,
targetType,
time):
self.image = self.emit("get-image-from-galery", selection.data)
self.toolbar = self.emit("load-toolbar")
self.main_pixbuf = self.image.render_to_preview()
self.pixbuf = self.image.render_to_preview()
self.image_widget.set_from_pixbuf(self.pixbuf)
self.set_current_page(1)
self.toolbar.set_sensitive(True)
#self.width_entry.set_value(self.image.width)
#self.height_entry.set_value(self.image.height)
#self.link_values_button.set_active(True)
#self.width = self.image.width
#self.height = self.image.height
def link_unlink(self, widget):
active = widget.get_active()
widget.set_icon_name("link" if active else "unlink")
if active:
self.width = self.width_entry.get_value()
self.height = self.height_entry.get_value()
def rescale_image(self):
width = self.width_entry.get_value()
height = self.height_entry.get_value()
self.pixbuf = self.main_pixbuf.scale_simple(int(width
if self.position ==\
0 or self.position == 180
else height),
int(height
if self.position ==\
90 or self.position == 270
else width),
gtk.gdk.INTERP_TILES)
self.pixbuf = self.pixbuf.rotate_simple(self.position)
self.image_widget.set_from_pixbuf(self.pixbuf)
def rotate_image(self, widget=None):
self.position += 90
self.position = 0 if self.position == 360 else self.position
self.pixbuf = self.pixbuf.rotate_simple(90)
self.image_widget.set_from_pixbuf(self.pixbuf)
"""
class ImageEditor(gtk.Notebook):
def clear(self):
self.filechooser.unselect_all()
def set_image(self, path):
self.radios[-1].set_active(True)
self.saved_image_viewer.set_path(path)
def get_image_path(self):
current_page = self.get_current_page()
if current_page == 0:
return self.filechooser.get_filename()
elif current_page == 1:
return self.clipboardchooser.get_image_path()
else:
return self.saved_image_viewer.get_path()
def __init__(self):
gtk.Notebook.__init__(self)
self.filechooser = FileChooser()
self.filechooser.show()
radio1 = gtk.RadioButton(None, "From file")
radio1.show()
self.append_page(self.filechooser, radio1)
self.clipboardchooser = ClipboardChooser()
self.clipboardchooser.show()
radio2 = gtk.RadioButton(radio1, "From Clipboard")
radio2.show()
self.append_page(self.clipboardchooser, radio2)
self.saved_image_viewer = SavedImageViewer()
self.saved_image_viewer.show()
radio3 = gtk.RadioButton(radio1, "Saved Image")
radio3.show()
self.append_page(self.saved_image_viewer, radio3)
self.radios = [radio1, radio2, radio3]
num = 0
for i in self.radios:
i.connect("toggled", self.option_changed, num)
num += 1
self.connect('switch-page', self.change_radio)
def change_radio(self, widget, page, page_num):
self.radios[page_num].set_active(True)
def option_changed(self, widget, index):
if widget.get_active():
self.set_current_page(index)
class FileChooser(gtk.FileChooserWidget):
def __init__(self):
gtk.FileChooserWidget.__init__(self)
self.pixbuf = None
self.preview_vbox = gtk.VBox()
self.preview_image = gtk.Image()
self.preview_image.show()
self.preview_vbox.pack_start(self.preview_image)
self.preview_vbox.show()
self.set_preview_widget(self.preview_vbox)
self.connect("update-preview", self.update_preview_cb)
self.filter = gtk.FileFilter()
self.filter.add_mime_type("image/*")
self.set_filter(self.filter)
def update_preview_cb(self, widget):
filename = self.get_preview_filename()
self.pixbuf = gtk.gdk.pixbuf_new_from_file_at_size(filename, 128, 128)
self.preview_image.set_from_pixbuf(self.pixbuf)
return
class SavedImageViewer(gtk.ScrolledWindow):
def get_path(self):
return self.path
def set_path(self, path):
self.path = path
self.pixbuf = gtk.gdk.pixbuf_new_from_file(path)
self.image.set_from_pixbuf(self.pixbuf)
def __init__(self):
gtk.ScrolledWindow.__init__(self)
self.path = None
self.image = gtk.Image()
self.add_with_viewport(self.image)
self.image.show()
self.pixbuf = None
class ClipboardChooser(gtk.VBox):
def get_image_path(self):
if self.pixbuf != None:
path = tempfile.mktemp(".png")
self.pixbuf.save(path, 'png')
return path
def reload_image(self, widget):
clipboard = gtk.Clipboard()
self.pixbuf = clipboard.wait_for_image()
self.image.set_from_pixbuf(self.pixbuf)
def __init__(self):
super(ClipboardChooser, self).__init()
self.pixbuf = None
toolbar = gtk.Toolbar()
separator = gtk.SeparatorToolItem()
separator.set_draw(False)
separator.set_expand(True)
separator.show()
toolbar.insert(separator, -1)
button = gtk.ToolButton(gtk.STOCK_REFRESH)
button.set_tooltip_text("Refresh image from clipboard")
button.connect('clicked', self.reload_image)
button.show()
toolbar.insert(button, -1)
separator = gtk.SeparatorToolItem()
separator.set_draw(False)
separator.set_expand(True)
separator.show()
toolbar.insert(separator, -1)
toolbar.show()
self.pack_start(toolbar, False, True, 0)
self.sw = gtk.ScrolledWindow()
self.image = gtk.Image()
self.image.show()
self.sw.add_with_viewport(self.image)
self.sw.show()
self.pack_start(self.sw, True, True, 0)
"""
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