Created
June 27, 2009 04:55
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Animated Gtk+ StatusIcon
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#!/usr/bin/env python | |
""" | |
Animated Gtk+ StatusIcon | |
Given an icon name or path, animates the icon in a number of ways, rotating, | |
shrinking, saturating it, etc. | |
Inspiration from: | |
http://groups.google.com/group/sage-devel/browse_thread/thread/f9aeba22ac171082 | |
""" | |
import math | |
import os | |
import sys | |
import gobject | |
import gtk | |
class AnimatedTrayIcon(gtk.StatusIcon): | |
__gsignals__ = { | |
"animation-finished" : ( | |
gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, []), | |
} | |
DEFAULT_TIME = 2 | |
def __init__(self, icon_path=None, icon_name=None): | |
gtk.StatusIcon.__init__(self) | |
if icon_name: | |
#always set from path, it seems to get better results..... | |
try: | |
icon_path = gtk.icon_theme_get_default().lookup_icon(icon_name, 48, gtk.ICON_LOOKUP_FORCE_SVG).get_filename() | |
except AttributeError: | |
icon_path = gtk.icon_theme_get_default().lookup_icon("image-missing", 48, gtk.ICON_LOOKUP_FORCE_SVG).get_filename() | |
if not icon_path: | |
raise Exception("Invalid Icon") | |
self._icon_path = icon_path | |
self._repeat = False | |
def _animation_finished(self): | |
self.emit("animation-finished") | |
def _update_animating_pixbuf(self): | |
self.set_from_file(self._icon_path) | |
if self.props.storage_type == gtk.IMAGE_PIXBUF: | |
self._pixbuf = self.get_pixbuf() | |
else: | |
raise Exception("Not Supported") | |
self._w = self._pixbuf.get_width() | |
self._h = self._pixbuf.get_height() | |
# (re)Set various animation parameters. | |
def _initialize_animation(self, seconds=DEFAULT_TIME): | |
self._update_animating_pixbuf() | |
if seconds < 0: | |
seconds=self.DEFAULT_TIME | |
self._repeat = True | |
else: | |
self._repeat = False | |
self._t = seconds | |
self._fps = 24.0 | |
self._dt_ms = int(1000 / self._fps) | |
self._frames = int(self._t * self._fps) | |
# Transform the icon via self.* and a given function. Afterwards, | |
# restore the original icon. Note: This is not re-entrant, so | |
# multiple simultaneous calls may be entertaining. | |
def _start_animation(self, func): | |
self.i = 0 | |
def advance_frame(): | |
self.set_from_pixbuf(func(self.i)) | |
if self.i < self._frames: | |
self.i += 1 | |
return True | |
elif self._repeat: | |
self.i = 0 | |
return True | |
else: | |
self._animation_finished() | |
return False | |
gobject.timeout_add(self._dt_ms, advance_frame) | |
def set_from_first_frame(self): | |
self.set_from_file(self._icon_path) | |
def is_animating(self): | |
return self.i < self._frames or self._repeat | |
def stop_animation(self): | |
self._repeat = False | |
def toggle_blinking(self): | |
if self.get_blinking(): | |
self.set_blinking(False) | |
else: | |
self.set_blinking(True) | |
def blink(self, seconds=DEFAULT_TIME): | |
if not self.get_blinking(): | |
self.set_blinking(True) | |
gobject.timeout_add(int(seconds * 1000), self.toggle_blinking) | |
def squeeze_vertically(self, seconds=DEFAULT_TIME): | |
self._initialize_animation(seconds) | |
def func(f): | |
h = max( 1, int( self._h * ( 1.0 - math.sin( f / (self._fps / math.pi) )**2 ) ) ) | |
return self._pixbuf.scale_simple(self._w, h, gtk.gdk.INTERP_BILINEAR) | |
self._start_animation(func) | |
def squeeze_horizontally(self, seconds=DEFAULT_TIME): | |
self._initialize_animation(seconds) | |
def func(f): | |
w = max( 1, int( self._w * ( 1.0 - math.sin( f / (self._fps / math.pi) )**2 ) ) ) | |
return self._pixbuf.scale_simple(w, self._h, gtk.gdk.INTERP_BILINEAR) | |
self._start_animation(func) | |
def rotate_horizontally(self, seconds=DEFAULT_TIME): | |
self._initialize_animation(seconds) | |
self._flipped = False | |
self._last_w = self._w | |
def func(f): | |
scale = ( 1.0 - math.sin( f / (self._fps / math.pi) )**2 ) | |
new_w = max( 1, int( self._w * scale ) ) | |
new = self._pixbuf.copy() | |
new.fill(0) | |
if self._last_w != 1 and new_w == 1: | |
self._flipped = not self._flipped | |
if self._flipped: | |
source = self._pixbuf.flip(horizontal=True) | |
else: | |
source = self._pixbuf | |
source.composite( | |
dest=new, | |
dest_x=0, | |
dest_y=0, | |
dest_width=self._w, | |
dest_height=self._h, | |
offset_x=(self._w/2) - (new_w/2), | |
offset_y=0, | |
scale_x=scale, | |
scale_y=1.0, | |
interp_type=gtk.gdk.INTERP_BILINEAR, | |
overall_alpha=255) | |
self._last_w = new_w | |
return new | |
self._start_animation(func) | |
def shrink(self, seconds=DEFAULT_TIME): | |
self._initialize_animation(seconds) | |
def func(f): | |
x = max( 1, int( self._w * ( 1.0 - math.sin( f / (self._fps / math.pi) )**2 ) ) ) | |
return self._pixbuf.scale_simple(x, x, gtk.gdk.INTERP_BILINEAR) | |
self._start_animation(func) | |
def saturate(self, seconds=DEFAULT_TIME, amplitude=0.8): | |
self._initialize_animation(seconds) | |
self._pixbuf_mod = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB, True, 8, self._w, self._h) | |
phase = math.asin( 1.0 / amplitude - 1.0 ) | |
def func(f): | |
sat = amplitude * ( 1.0 + math.sin( 1.0 * f / (self._fps / math.pi) + phase ) ) | |
self._pixbuf.saturate_and_pixelate(self._pixbuf_mod, sat, False) | |
return self._pixbuf_mod | |
self._start_animation(func) | |
if __name__ == '__main__': | |
def on_stop_clicked(btn, _ti): | |
_ti.stop_animation() | |
def on_animation_finished(_ti): | |
_ti.set_from_icon_name("dialog-error") | |
_ti.blink() | |
#ti = AnimatedTrayIcon(icon_path="/home/john/Desktop/conduit.svg") | |
ti = AnimatedTrayIcon(icon_name="go-home") | |
ti.set_from_icon_name("dialog-information") | |
ti.connect("animation-finished", on_animation_finished) | |
w = gtk.Window() | |
w.connect('delete-event', lambda *a: gtk.main_quit() ) | |
hb = gtk.HBox() | |
for name in ("blink", "rotate_horizontally", "squeeze_horizontally", "squeeze_vertically", "shrink", "saturate"): | |
func = getattr(ti, name) | |
btn = gtk.Button(name) | |
btn.connect("clicked", lambda b,f: f(-1), func) | |
hb.pack_start(btn) | |
btn = gtk.Button("STOP") | |
btn.connect("clicked", on_stop_clicked, ti) | |
hb.pack_start(btn) | |
w.add(hb) | |
w.show_all() | |
gtk.main() | |
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