-# gzv.py - an user interface to generate-zooming-video
+# -*- coding: utf-8; -*-
+# gzv.py - an user interface to select people in a picture
#
# Copyright (C) 2008 Lincoln de Sousa <lincoln@minaslivre.org>
#
_ = lambda x:x
+class Point(object):
+ def __init__(self, x, y):
+ self.x = x
+ self.y = y
+
+ @staticmethod
+ def pythagorean(p1, p2):
+ return math.sqrt((p2.x - p1.x)**2 + (p2.y - p1.y)**2)
+
class Ball(object):
DEFAULT_WIDTH = 10
- def __init__(self, x, y, r, name='', position=0):
+ def __init__(self, x, y, r, name='', position=0, selected=False):
self.position = position
- self.x = int(x)
- self.y = int(y)
+ self.selected = selected
+ self.p = Point(int(x), int(y))
self.radius = int(r)
self.name = name
def save_to_file(self, path):
target = open(path, 'w')
for i in self:
- target.write('%d,%d %d %s\n' % (i.x, i.y, i.radius, i.name))
+ target.write('%d,%d %d %s\n' % (i.p.x, i.p.y, i.radius, i.name))
target.close()
class GladeLoader(object):
self.dialog.set_transient_for(parent)
def get_project(self):
- if not self.dialog.run():
+ # This '1' was defined in the glade file
+ if not self.dialog.run() == 1:
return None
fname = self.wid('image').get_filename()
self.evtbox.connect('button-press-event', self.button_press)
self.evtbox.connect('button-release-event', self.button_release)
self.evtbox.connect('motion-notify-event', self.motion_notify)
+ self.evtbox.connect('motion-notify-event', self.ball_motion)
+
+ # making it possible to grab motion events when the mouse is
+ # over the widget.
+ self.evtbox.set_events(gtk.gdk.POINTER_MOTION_MASK)
self.model = gtk.ListStore(int, str)
self.treeview = self.wid('treeview')
self.treeview.set_model(self.model)
+ self.treeview.connect('button-press-event', self.select_fp)
self.draw = self.wid('draw')
self.draw.connect_after('expose-event', self.expose_draw)
self.load_balls_to_treeview()
self.setup_treeview()
+ self.new_ball = False
+ self.move_ball = None
+
# drawing stuff
- self.selecting = False
self.start_x = -1
self.start_y = -1
+ self.last_x = -1
+ self.last_y = -1
self.radius = Ball.DEFAULT_WIDTH
+ def show(self):
+ self.window.show_all()
+
def setup_treeview(self):
self.model.connect('rows-reordered', self.on_rows_reordered)
project = proj.get_project()
proj.destroy()
- # This '1' was defined in the glade file
if project:
self.load_project(project)
self.balls.save_to_file(self.project.focus_points_file)
fc.destroy()
-
def load_project(self, project):
self.project = project
self.balls = self.load_balls_from_file(project.focus_points_file)
self.image = project.image
- # loading the picture image and getting some useful
- # information to draw it in the widget's background
+ # I'm loading a pixbuf first because I need to get its
+ # dimensions this with a pixbuf is easier than with an image.
try:
- self.draw.set_from_file(project.image)
+ pixbuf = gtk.gdk.pixbuf_new_from_file(project.image)
except gobject.GError:
msg = _("Couldn't recognize the image file format.")
dialog = gtk.MessageDialog(self.window,
dialog.destroy()
return self.unload_project()
+ self.draw.set_from_pixbuf(pixbuf)
self.load_balls_to_treeview()
+ self.set_widgets_sensitivity(True)
def unload_project(self):
self.project = None
self.image = None
self.balls = BallManager()
self.draw.queue_draw()
+ self.set_widgets_sensitivity(False)
+
+ def set_widgets_sensitivity(self, sensitive):
+ for i in 'toolbutton1', 'toolbutton5', 'scrolledwindow1', \
+ 'hbox2', 'imagemenuitem3':
+ self.wid(i).set_sensitive(sensitive)
def load_balls_to_treeview(self):
self.model.clear()
del model[path]
self.draw.queue_draw()
+ def select_fp(self, treeview, event):
+ path, column, x, y = \
+ self.treeview.get_path_at_pos(int(event.x), int(event.y))
+ if path:
+ model = self.treeview.get_model()
+ ball = self.balls[model[path][0]]
+
+ # making sure that only one ball is selected
+ for i in self.balls:
+ i.selected = False
+ ball.selected = True
+
+ # available space to the image
+ w = self.evtbox.get_allocation().width
+ h = self.evtbox.get_allocation().height
+
+ # point begining from the left image border
+ wib = self.point_with_border(ball)
+
+ #self.wid('viewport').get_vadjustment().value = wib.x # + (w / 2)
+ #self.wid('viewport').get_hadjustment().value = wib.y # + (h / 2)
+
+ self.draw.queue_draw()
+
+ def select_fp_from_image(self, ball):
+ selection = self.treeview.get_selection()
+ selection.select_path(str(ball.position))
+
+ # making sure that only one ball is selected
+ for i in self.balls:
+ i.selected = False
+ ball.selected = True
+
+ self.draw.queue_draw()
+
def save_fp_list(self, *args):
assert self.project is not None
self.balls.save_to_file(self.project.focus_points_file)
+ def move_fp_up(self, *args):
+ selection = self.treeview.get_selection()
+ model, path = selection.get_selected()
+ if not path:
+ return
+
+ pos = model[path][0]
+ newpos = max(pos - 1, 0)
+ self.balls.insert(newpos, self.balls.pop(pos))
+
+ # normalizing the position of elements.
+ for index, item in enumerate(self.balls):
+ item.position = index
+
+ self.load_balls_to_treeview()
+ selection.select_path(str(newpos))
+
+ def move_fp_down(self, *args):
+ selection = self.treeview.get_selection()
+ model, path = selection.get_selected()
+ if not path:
+ return
+
+ pos = model[path][0]
+ newpos = min(pos + 1, len(self.balls))
+ self.balls.insert(newpos, self.balls.pop(pos))
+
+ # normalizing the position of elements.
+ for index, item in enumerate(self.balls):
+ item.position = index
+
+ self.load_balls_to_treeview()
+ selection.select_path(str(newpos))
+
def expose_draw(self, draw, event):
if not self.image:
return
- self.draw_current_ball()
for i in self.balls:
self.draw_ball(i)
+
+ if self.start_x < 0:
+ return False
+
+ if self.new_ball:
+ ball = Ball(self.start_x, self.start_y, self.radius)
+ self.draw_ball(ball)
+
return False
+ def point_with_border(self, ball):
+ iw, ih = self.draw.size_request()
+ w = self.draw.get_allocation().width
+ h = self.draw.get_allocation().height
+
+ x = ((w / 2) - (iw / 2)) + ball.p.x
+ y = ((h / 2) - (ih / 2)) + ball.p.y
+ return Point(x, y)
+
+ def point_without_border(self, point):
+ iw, ih = self.draw.size_request()
+ w = self.draw.get_allocation().width
+ h = self.draw.get_allocation().height
+
+ x = point.x - ((w / 2) - (iw / 2))
+ y = point.y - ((h / 2) - (ih / 2))
+ return Point(x, y)
+
def draw_ball(self, ball):
ctx = self.draw.window.cairo_create()
- ctx.arc(ball.x, ball.y, ball.radius, 0, 64*math.pi)
- ctx.set_source_rgba(0.5, 0.0, 0.0, 0.4)
+ ctx.arc(self.point_with_border(ball).x,
+ self.point_with_border(ball).y,
+ ball.radius, 0, 64*math.pi)
+ ctx.set_source_rgba(0.0, 0.0, 0.5, 0.4)
ctx.fill()
- def draw_current_ball(self):
- if self.start_x < 0:
- return
- ball = Ball(self.start_x, self.start_y, self.radius)
- self.draw_ball(ball)
+ if ball.selected:
+ ctx.set_source_rgba(0.0, 0.5, 0.0, 0.4)
+ ctx.set_line_width(5)
+ ctx.arc(self.point_with_border(ball).x,
+ self.point_with_border(ball).y,
+ ball.radius+1, 0, 64*math.pi)
+ ctx.stroke()
def button_press(self, widget, event):
+ self.new_ball = True
+
+ self.last_x = event.x
+ self.last_y = event.y
+
if event.button == 1:
- self.selecting = True
- self.start_x = event.x
- self.start_y = event.y
- self.last_x = event.x
+ for i in self.balls:
+ p1 = Point(event.x, event.y)
+ p2 = self.point_with_border(i)
+ if Point.pythagorean(p1, p2) < i.radius:
+ self.last_x = event.x - i.p.x
+ self.last_y = event.y - i.p.y
+ self.select_fp_from_image(i)
+
+ self.new_ball = False
+ self.move_ball = i
+ break
+
+ self.start_x = self.point_without_border(event).x
+ self.start_y = self.point_without_border(event).y
def button_release(self, widget, event):
+ self.move_ball = None
+
if event.button == 1:
- self.selecting = False
self.finish_drawing()
def motion_notify(self, widget, event):
+ if not self.new_ball:
+ return
+
self.draw.queue_draw()
if event.x > self.last_x:
self.last_x = event.x
- def finish_drawing(self):
- position = len(self.balls)
- ball = Ball(self.start_x, self.start_y, self.radius, '', position)
- self.balls.append(ball)
- self.model.append([position, ''])
- self.treeview.set_cursor(str(position), self.fpcolumn, True)
+ def ball_motion(self, widget, event):
+ if not self.move_ball:
+ return
+
+ self.move_ball.p.x = self.point_without_border(event).x
+ self.move_ball.p.y = self.point_without_border(event).y
+
+ self.draw.queue_draw()
- # returning to the standard radius
+ def finish_drawing(self):
+ if self.new_ball:
+ position = len(self.balls)
+ ball = Ball(self.start_x, self.start_y, self.radius, '', position)
+ self.balls.append(ball)
+ self.model.append([position, ''])
+ self.treeview.set_cursor(str(position), self.fpcolumn, True)
+ self.new_ball = False
+
+ # reseting to the default coordenades
+ self.start_x = -1
+ self.start_y = -1
self.radius = Ball.DEFAULT_WIDTH
if __name__ == '__main__':
- Gzv().window.show_all()
+ Gzv().show()
gtk.main()
projects / cascardo / movie.git / blobdiff