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.
20 from ConfigParser import ConfigParser
27 def __init__(self, x, y, r, name='', position=0):
28 self.position = position
34 class BallManager(list):
35 def __init__(self, *args, **kwargs):
36 super(BallManager, self).__init__(*args, **kwargs)
38 def save_to_file(self, path):
39 target = open(path, 'w')
41 target.write('%d,%d %d %s\n' % (i.x, i.y, i.radios, i.name))
44 class GladeLoader(object):
45 def __init__(self, fname, root=''):
46 self.ui = gtk.glade.XML(fname, root)
47 self.ui.signal_autoconnect(self)
49 def get_widget(self, wname):
50 return self.ui.get_widget(wname)
57 def gtk_widget_show(self, widget, *args):
61 def gtk_widget_hide(self, widget, *args):
65 def gtk_main_quit(self, *args):
68 def gtk_main(self, *args):
71 class Project(object):
72 def __init__(self, image, width, height):
76 self.focus_points_file = ''
78 def save_to_file(self, path):
79 bn = os.path.basename(path)
80 name = os.path.splitext(bn)[0]
83 cp.set('Project', 'image', self.image)
84 cp.set('Project', 'width', self.width)
85 cp.set('Project', 'height', self.height)
87 cp.write(open(path, 'w'))
94 image = cp.get('Project', 'image')
95 width = cp.getint('Project', 'width')
96 height = cp.getint('Project', 'height')
97 x = cp.getint('Project', 'height')
99 proj = Project(image, width, height)
100 proj.focus_points_file = cp.get('Project', 'focus_points')
104 class NewProject(GladeLoader):
105 def __init__(self, parent=None):
106 super(NewProject, self).__init__('gzv.glade', 'new-project')
107 self.dialog = self.wid('new-project')
109 self.dialog.set_transient_for(parent)
111 def get_project(self):
112 fname = self.wid('image').get_filename()
113 width = self.wid('width').get_text()
114 height = self.wid('height').get_text()
115 return Project(fname, width, height)
118 self.dialog.destroy()
120 class Gzv(GladeLoader):
122 super(Gzv, self).__init__('gzv.glade', 'main-window')
123 self.window = self.wid('main-window')
124 self.window.connect('delete-event', lambda *x: gtk.main_quit())
126 self.evtbox = self.wid('eventbox')
127 self.evtbox.connect('button-press-event', self.button_press)
128 self.evtbox.connect('button-release-event', self.button_release)
129 self.evtbox.connect('motion-notify-event', self.motion_notify)
131 self.model = gtk.ListStore(int, str)
132 self.treeview = self.wid('treeview')
133 self.treeview.set_model(self.model)
135 self.draw = self.wid('draw')
136 self.draw.connect('expose-event', self.expose_draw)
138 # Starting with an empty project with no image loaded
142 # This attr may be overriten, if so, call the method (load_balls_to_treeview)
143 self.balls = BallManager()
145 self.load_balls_to_treeview()
146 self.setup_treeview()
149 self.ball_width = Ball.DEFAULT_WIDTH
150 self.selecting = False
154 def setup_treeview(self):
155 self.model.connect('rows-reordered', self.on_rows_reordered)
157 renderer = gtk.CellRendererText()
158 column = gtk.TreeViewColumn(_('Position'), renderer, text=0)
159 self.treeview.append_column(column)
161 renderer = gtk.CellRendererText()
162 renderer.connect('edited', self.on_cell_edited)
163 renderer.set_property('editable', True)
164 column = gtk.TreeViewColumn(_('Name'), renderer, text=1)
165 self.treeview.append_column(column)
167 def on_rows_reordered(self, *args):
170 def on_cell_edited(self, *args):
173 def new_project(self, button):
174 proj = NewProject(self.window)
176 # This '1' was defined in the glade file
177 if proj.dialog.run() == 1:
178 self.load_project(proj.get_project())
181 def open_project(self, *args):
182 fc = gtk.FileChooserDialog(_('Choose a gzv project'), self.window,
183 buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL,
184 gtk.STOCK_OK, gtk.RESPONSE_OK))
185 if fc.run() == gtk.RESPONSE_OK:
186 proj_file = fc.get_filename()
187 self.load_project(Project.parse_file(proj_file))
190 def load_project(self, project):
191 self.balls = self.load_balls_from_file(project.focus_points_file)
192 self.image = project.image
193 self.load_balls_to_treeview()
194 self.draw.queue_draw()
196 def load_balls_to_treeview(self):
197 model = self.treeview.get_model()
199 model.append([i.position, i.name])
201 def load_balls_from_file(self, fname):
202 balls = BallManager()
203 if not os.path.exists(fname):
206 for index, line in enumerate(file(fname)):
209 pos, radios, name = line.split()
210 x, y = pos.split(',')
211 balls.append(Ball(int(x), int(y), int(radios), name, index))
214 def expose_draw(self, draw, event):
218 # loading the picture image and getting some useful
219 # information to draw it in the widget's background
220 img = gtk.gdk.pixbuf_new_from_file(self.image)
221 pixels = img.get_pixels()
222 rowstride = img.get_rowstride()
223 width = img.get_width()
224 height = img.get_height()
225 gc = draw.style.black_gc
227 # sets the correct size of the eventbox, to show the scrollbar
229 self.evtbox.set_size_request(width, height)
231 # drawing the picture in the background of the drawing area,
232 # this is really important.
233 draw.window.draw_rgb_image(gc, 0, 0, width, height,
234 'normal', pixels, rowstride,
237 # this call makes the ball being drown be shown correctly.
238 self.draw_current_ball()
240 # drawing other balls stored in the self.balls list.
241 ctx = draw.window.cairo_create()
244 ctx.set_line_width(10.0)
245 ctx.set_source_rgba (0.5, 0.0, 0.0, 0.4)
248 ctx.arc(i.x, i.y, i.radios, 0, 64*math.pi)
253 def draw_current_ball(self):
256 ctx = self.draw.window.cairo_create()
257 ctx.arc(self.start_x, self.start_y, self.ball_width, 0, 64*math.pi)
258 ctx.set_source_rgba (0.5, 0.0, 0.0, 0.4)
261 def button_press(self, widget, event):
262 if event.button == 1:
263 self.selecting = True
264 self.start_x = event.x
265 self.start_y = event.y
266 self.last_x = event.x
268 def button_release(self, widget, event):
269 if event.button == 1:
270 self.selecting = False
271 self.finish_drawing()
273 def motion_notify(self, widget, event):
274 self.draw.queue_draw()
276 if event.x > self.last_x:
281 self.last_x = event.x
283 def finish_drawing(self):
284 self.draw_current_ball()
285 self.ball_width = Ball.DEFAULT_WIDTH
287 if __name__ == '__main__':
288 Gzv().window.show_all()