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, selected=False):
29 self.position = position
30 self.selected = selected
36 class BallManager(list):
37 def __init__(self, *args, **kwargs):
38 super(BallManager, self).__init__(*args, **kwargs)
40 def save_to_file(self, path):
41 target = open(path, 'w')
43 target.write('%d,%d %d %s\n' % (i.x, i.y, i.radius, i.name))
46 class GladeLoader(object):
47 def __init__(self, fname, root=''):
48 self.ui = gtk.glade.XML(fname, root)
49 self.ui.signal_autoconnect(self)
51 def get_widget(self, wname):
52 return self.ui.get_widget(wname)
59 def gtk_widget_show(self, widget, *args):
63 def gtk_widget_hide(self, widget, *args):
67 def gtk_main_quit(self, *args):
70 def gtk_main(self, *args):
73 class Project(object):
74 def __init__(self, image, width, height):
78 self.focus_points_file = ''
80 def save_to_file(self, path):
81 if not self.focus_points_file:
82 bn = os.path.basename(path)
83 name = os.path.splitext(bn)[0]
84 self.focus_points_file = \
85 os.path.join(os.path.dirname(path), name + '_fpf')
88 cp.add_section('Project')
89 cp.set('Project', 'image', self.image)
90 cp.set('Project', 'width', self.width)
91 cp.set('Project', 'height', self.height)
92 cp.set('Project', 'focus_points', self.focus_points_file)
94 cp.write(open(path, 'w'))
101 image = cp.get('Project', 'image')
102 width = cp.getint('Project', 'width')
103 height = cp.getint('Project', 'height')
104 x = cp.getint('Project', 'height')
106 proj = Project(image, width, height)
107 proj.focus_points_file = cp.get('Project', 'focus_points')
111 class NewProject(GladeLoader):
112 def __init__(self, parent=None):
113 super(NewProject, self).__init__('gzv.glade', 'new-project')
114 self.dialog = self.wid('new-project')
116 self.dialog.set_transient_for(parent)
118 def get_project(self):
119 # This '1' was defined in the glade file
120 if not self.dialog.run() == 1:
123 fname = self.wid('image').get_filename()
124 width = self.wid('width').get_text()
125 height = self.wid('height').get_text()
126 return Project(fname, width, height)
129 self.dialog.destroy()
131 class Gzv(GladeLoader):
133 super(Gzv, self).__init__('gzv.glade', 'main-window')
134 self.window = self.wid('main-window')
135 self.window.connect('delete-event', lambda *x: gtk.main_quit())
137 self.evtbox = self.wid('eventbox')
138 self.evtbox.connect('button-press-event', self.button_press)
139 self.evtbox.connect('button-release-event', self.button_release)
140 self.evtbox.connect('motion-notify-event', self.motion_notify)
142 self.model = gtk.ListStore(int, str)
143 self.treeview = self.wid('treeview')
144 self.treeview.set_model(self.model)
145 self.treeview.connect('button-press-event', self.select_fp)
147 self.draw = self.wid('draw')
148 self.draw.connect_after('expose-event', self.expose_draw)
150 # Starting with an empty project with no image loaded
154 # This attr may be overriten, if so, call the method (load_balls_to_treeview)
155 self.balls = BallManager()
157 self.load_balls_to_treeview()
158 self.setup_treeview()
163 self.radius = Ball.DEFAULT_WIDTH
165 def setup_treeview(self):
166 self.model.connect('rows-reordered', self.on_rows_reordered)
168 renderer = gtk.CellRendererText()
169 column = gtk.TreeViewColumn(_('Position'), renderer, text=0)
170 column.set_property('visible', False)
171 self.treeview.append_column(column)
173 renderer = gtk.CellRendererText()
174 renderer.connect('edited', self.on_cell_edited)
175 renderer.set_property('editable', True)
176 self.fpcolumn = gtk.TreeViewColumn(_('Name'), renderer, text=1)
177 self.treeview.append_column(self.fpcolumn)
179 def on_rows_reordered(self, *args):
182 def on_cell_edited(self, renderer, path, value):
183 self.balls[int(path)].name = value
184 self.load_balls_to_treeview()
186 def new_project(self, button):
187 proj = NewProject(self.window)
188 project = proj.get_project()
192 self.load_project(project)
194 def open_project(self, *args):
195 fc = gtk.FileChooserDialog(_('Choose a gzv project'), self.window,
196 buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL,
197 gtk.STOCK_OK, gtk.RESPONSE_OK))
198 if fc.run() == gtk.RESPONSE_OK:
199 proj_file = fc.get_filename()
200 self.load_project(Project.parse_file(proj_file))
203 def save_project(self, *args):
204 fc = gtk.FileChooserDialog(_('Save project'), self.window,
205 action=gtk.FILE_CHOOSER_ACTION_SAVE,
206 buttons=(gtk.STOCK_CANCEL,
210 if fc.run() == gtk.RESPONSE_OK:
211 self.project.save_to_file(fc.get_filename())
212 self.balls.save_to_file(self.project.focus_points_file)
216 def load_project(self, project):
217 self.project = project
218 self.balls = self.load_balls_from_file(project.focus_points_file)
219 self.image = project.image
221 # I'm loading a pixbuf first because I need to get its
222 # dimensions this with a pixbuf is easier than with an image.
224 pixbuf = gtk.gdk.pixbuf_new_from_file(project.image)
225 except gobject.GError:
226 msg = _("Couldn't recognize the image file format.")
227 dialog = gtk.MessageDialog(self.window,
231 dialog.set_markup(msg)
234 return self.unload_project()
236 self.draw.set_from_pixbuf(pixbuf)
237 self.load_balls_to_treeview()
239 def unload_project(self):
242 self.balls = BallManager()
243 self.draw.queue_draw()
245 def load_balls_to_treeview(self):
248 self.model.append([i.position, i.name])
250 def load_balls_from_file(self, fname):
251 balls = BallManager()
252 if not os.path.exists(fname):
255 for index, line in enumerate(file(fname)):
258 pos, radius, name = line.split(None, 2)
259 x, y = pos.split(',')
260 balls.append(Ball(x, y, radius, name.strip(), index))
263 def remove_fp(self, *args):
264 selection = self.treeview.get_selection()
265 model, path = selection.get_selected()
267 position = model[path][0]
269 if i.position == int(position):
272 self.draw.queue_draw()
274 def select_fp(self, treeview, event):
275 path, column, x, y = \
276 self.treeview.get_path_at_pos(int(event.x), int(event.y))
278 model = self.treeview.get_model()
279 ball = self.balls[model[path][0]]
281 # making sure that only one ball is selected
286 self.draw.queue_draw()
288 def save_fp_list(self, *args):
289 assert self.project is not None
291 # if the project has no
292 if self.project and not self.project.focus_points_file:
293 fc = gtk.FileChooserDialog(_('Save the focus points file'),
295 action=gtk.FILE_CHOOSER_ACTION_SAVE,
296 buttons=(gtk.STOCK_CANCEL,
300 if fc.run() == gtk.RESPONSE_OK:
301 self.project.focus_points_file = fc.get_filename()
307 self.balls.save_to_file(self.project.focus_points_file)
309 def expose_draw(self, draw, event):
313 self.draw_current_ball()
318 def draw_ball(self, ball):
319 ctx = self.draw.window.cairo_create()
320 ctx.arc(ball.x, ball.y, ball.radius, 0, 64*math.pi)
321 ctx.set_source_rgba(0.0, 0.0, 0.5, 0.4)
325 ctx.set_source_rgba(0.0, 0.5, 0.0, 0.4)
326 ctx.set_line_width(5)
327 ctx.arc(ball.x, ball.y, ball.radius+1, 0, 64*math.pi)
330 def draw_current_ball(self):
333 ball = Ball(self.start_x, self.start_y, self.radius)
336 def button_press(self, widget, event):
337 if event.button == 1:
338 self.start_x = event.x
339 self.start_y = event.y
340 self.last_x = event.x
342 def button_release(self, widget, event):
343 if event.button == 1:
344 self.finish_drawing()
346 def motion_notify(self, widget, event):
347 self.draw.queue_draw()
349 if event.x > self.last_x:
354 self.last_x = event.x
356 def finish_drawing(self):
357 position = len(self.balls)
358 ball = Ball(self.start_x, self.start_y, self.radius, '', position)
359 self.balls.append(ball)
360 self.model.append([position, ''])
361 self.treeview.set_cursor(str(position), self.fpcolumn, True)
363 # reseting to the default coordenades
366 self.radius = Ball.DEFAULT_WIDTH
368 if __name__ == '__main__':
369 Gzv().window.show_all()