1 # gzv.py - an user interface to generate-zooming-video
3 # Copyright (C) 2008 Lincoln de Sousa <lincoln@minaslivre.org>
5 # This program is free software: you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation, either version 3 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
21 from ConfigParser import ConfigParser
28 def __init__(self, x, y, r, name='', position=0):
29 self.position = position
35 class BallManager(list):
36 def __init__(self, *args, **kwargs):
37 super(BallManager, self).__init__(*args, **kwargs)
39 def save_to_file(self, path):
40 target = open(path, 'w')
42 target.write('%d,%d %d %s\n' % (i.x, i.y, i.radius, i.name))
45 class GladeLoader(object):
46 def __init__(self, fname, root=''):
47 self.ui = gtk.glade.XML(fname, root)
48 self.ui.signal_autoconnect(self)
50 def get_widget(self, wname):
51 return self.ui.get_widget(wname)
58 def gtk_widget_show(self, widget, *args):
62 def gtk_widget_hide(self, widget, *args):
66 def gtk_main_quit(self, *args):
69 def gtk_main(self, *args):
72 class Project(object):
73 def __init__(self, image, width, height):
77 self.focus_points_file = ''
79 def save_to_file(self, path):
80 if not self.focus_points_file:
81 bn = os.path.basename(path)
82 name = os.path.splitext(bn)[0]
83 self.focus_points_file = \
84 os.path.join(os.path.dirname(path), name + '_fpf')
87 cp.add_section('Project')
88 cp.set('Project', 'image', self.image)
89 cp.set('Project', 'width', self.width)
90 cp.set('Project', 'height', self.height)
91 cp.set('Project', 'focus_points', self.focus_points_file)
93 cp.write(open(path, 'w'))
100 image = cp.get('Project', 'image')
101 width = cp.getint('Project', 'width')
102 height = cp.getint('Project', 'height')
103 x = cp.getint('Project', 'height')
105 proj = Project(image, width, height)
106 proj.focus_points_file = cp.get('Project', 'focus_points')
110 class NewProject(GladeLoader):
111 def __init__(self, parent=None):
112 super(NewProject, self).__init__('gzv.glade', 'new-project')
113 self.dialog = self.wid('new-project')
115 self.dialog.set_transient_for(parent)
117 def get_project(self):
118 if not self.dialog.run():
121 fname = self.wid('image').get_filename()
122 width = self.wid('width').get_text()
123 height = self.wid('height').get_text()
124 return Project(fname, width, height)
127 self.dialog.destroy()
129 class Gzv(GladeLoader):
131 super(Gzv, self).__init__('gzv.glade', 'main-window')
132 self.window = self.wid('main-window')
133 self.window.connect('delete-event', lambda *x: gtk.main_quit())
135 self.evtbox = self.wid('eventbox')
136 self.evtbox.connect('button-press-event', self.button_press)
137 self.evtbox.connect('button-release-event', self.button_release)
138 self.evtbox.connect('motion-notify-event', self.motion_notify)
140 self.model = gtk.ListStore(int, str)
141 self.treeview = self.wid('treeview')
142 self.treeview.set_model(self.model)
144 self.draw = self.wid('draw')
145 self.draw.connect_after('expose-event', self.expose_draw)
147 # Starting with an empty project with no image loaded
151 # This attr may be overriten, if so, call the method (load_balls_to_treeview)
152 self.balls = BallManager()
154 self.load_balls_to_treeview()
155 self.setup_treeview()
158 self.selecting = False
161 self.radius = Ball.DEFAULT_WIDTH
163 def setup_treeview(self):
164 self.model.connect('rows-reordered', self.on_rows_reordered)
166 renderer = gtk.CellRendererText()
167 column = gtk.TreeViewColumn(_('Position'), renderer, text=0)
168 column.set_property('visible', False)
169 self.treeview.append_column(column)
171 renderer = gtk.CellRendererText()
172 renderer.connect('edited', self.on_cell_edited)
173 renderer.set_property('editable', True)
174 self.fpcolumn = gtk.TreeViewColumn(_('Name'), renderer, text=1)
175 self.treeview.append_column(self.fpcolumn)
177 def on_rows_reordered(self, *args):
180 def on_cell_edited(self, renderer, path, value):
181 self.balls[int(path)].name = value
182 self.load_balls_to_treeview()
184 def new_project(self, button):
185 proj = NewProject(self.window)
186 project = proj.get_project()
189 # This '1' was defined in the glade file
191 self.load_project(project)
193 def open_project(self, *args):
194 fc = gtk.FileChooserDialog(_('Choose a gzv project'), self.window,
195 buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL,
196 gtk.STOCK_OK, gtk.RESPONSE_OK))
197 if fc.run() == gtk.RESPONSE_OK:
198 proj_file = fc.get_filename()
199 self.load_project(Project.parse_file(proj_file))
202 def save_project(self, *args):
203 fc = gtk.FileChooserDialog(_('Save project'), self.window,
204 action=gtk.FILE_CHOOSER_ACTION_SAVE,
205 buttons=(gtk.STOCK_CANCEL,
209 if fc.run() == gtk.RESPONSE_OK:
210 self.project.save_to_file(fc.get_filename())
211 self.balls.save_to_file(self.project.focus_points_file)
215 def load_project(self, project):
216 self.project = project
217 self.balls = self.load_balls_from_file(project.focus_points_file)
218 self.image = project.image
220 # loading the picture image and getting some useful
221 # information to draw it in the widget's background
223 self.draw.set_from_file(project.image)
224 except gobject.GError:
225 msg = _("Couldn't recognize the image file format.")
226 dialog = gtk.MessageDialog(self.window,
230 dialog.set_markup(msg)
233 return self.unload_project()
235 self.load_balls_to_treeview()
237 def unload_project(self):
240 self.balls = BallManager()
241 self.draw.queue_draw()
243 def load_balls_to_treeview(self):
246 self.model.append([i.position, i.name])
248 def load_balls_from_file(self, fname):
249 balls = BallManager()
250 if not os.path.exists(fname):
253 for index, line in enumerate(file(fname)):
256 pos, radius, name = line.split(None, 2)
257 x, y = pos.split(',')
258 balls.append(Ball(x, y, radius, name.strip(), index))
261 def remove_fp(self, *args):
262 selection = self.treeview.get_selection()
263 model, path = selection.get_selected()
265 position = model[path][0]
267 if i.position == int(position):
271 def save_fp_list(self, *args):
272 assert self.project is not None
274 # if the project has no
275 if self.project and not self.project.focus_points_file:
276 fc = gtk.FileChooserDialog(_('Save the focus points file'),
278 action=gtk.FILE_CHOOSER_ACTION_SAVE,
279 buttons=(gtk.STOCK_CANCEL,
283 if fc.run() == gtk.RESPONSE_OK:
284 self.project.focus_points_file = fc.get_filename()
290 self.balls.save_to_file(self.project.focus_points_file)
292 def expose_draw(self, draw, event):
296 self.draw_current_ball()
301 def draw_ball(self, ball):
302 ctx = self.draw.window.cairo_create()
303 ctx.arc(ball.x, ball.y, ball.radius, 0, 64*math.pi)
304 ctx.set_source_rgba(0.5, 0.0, 0.0, 0.4)
307 def draw_current_ball(self):
310 ball = Ball(self.start_x, self.start_y, self.radius)
313 def button_press(self, widget, event):
314 if event.button == 1:
315 self.selecting = True
316 self.start_x = event.x
317 self.start_y = event.y
318 self.last_x = event.x
320 def button_release(self, widget, event):
321 if event.button == 1:
322 self.selecting = False
323 self.finish_drawing()
325 def motion_notify(self, widget, event):
326 self.draw.queue_draw()
328 if event.x > self.last_x:
333 self.last_x = event.x
335 def finish_drawing(self):
336 position = len(self.balls)
337 ball = Ball(self.start_x, self.start_y, self.radius, '', position)
338 self.balls.append(ball)
339 self.model.append([position, ''])
340 self.treeview.set_cursor(str(position), self.fpcolumn, True)
342 # returning to the standard radius
343 self.radius = Ball.DEFAULT_WIDTH
345 if __name__ == '__main__':
346 Gzv().window.show_all()