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# -*- coding: utf-8 -*-
# This file is part of emesene.
#
# Emesene is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# emesene is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with emesene; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import pygtk
import gtk
import gtk.gdk
import cairo
import gobject
''' A set of useful cairo related methods '''
def set_context_color(context, color = gtk.gdk.color_parse('#000000')):
r = float(color.red) / 65535
g = float(color.green) / 65535
b = float(color.blue) / 65535
context.set_source_rgb(r,g,b)
def image_surface_from_pixbuf( pixbuf=None):
if pixbuf is not None:
return cairo.ImageSurface.create_for_data(
pixbuf.get_pixels_array(),
cairo.FORMAT_ARGB32,
pixbuf.get_width(),
pixbuf.get_height(),
pixbuf.get_rowstride())
else:
return cairo.ImageSurface(cairo.FORMAT_ARGB32, 1, 1)
def resize_image_surface(surface, new_width, new_height):
new_surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, new_width, new_height)
cr = cairo.Context(new_surface)
cr.set_source_surface(surface, 0, 0)
cr.paint()
return new_surface
class avatarHolder( gtk.Widget ):
"""avatarHolderWidget """
#note: i should think up a better name than avatarHolder
#cellKeyPosition, is a Anchor Type constant
#refer to http://www.pygtk.org/docs/pygtk/gtk-constants.html#gtk-anchor-type-constants
__gproperties__ = {
'pixbuf': (gtk.gdk.Pixbuf, 'Pixbuf',
'Pixbuf',gobject.PARAM_READWRITE),
'crossFade' : (bool,'animate by crossfade if true','',True, gobject.PARAM_READWRITE),
'dimention' : (gobject.TYPE_FLOAT,'cell dimensions',
'height width of cell',0.0, 96.0,32.0, gobject.PARAM_READWRITE),
'radius_factor' : (gobject.TYPE_FLOAT,'radius of pixbuf',
'0.0 to 0.5 with 0.1 = 10% of dimention',0.0, 0.5,0.11, gobject.PARAM_READWRITE),
'keyPositin' : (object,'position of avatar',
'corresponds to position of key in numpad', gobject.PARAM_READWRITE),
}
__gsignals__ = { 'size_request' : 'override', 'expose-event' : 'override' }
def __init__(self, cellDimention = 96, crossFade = True, cellRadius = 0.05, cellKeyPosition = gtk.ANCHOR_CENTER):
gobject.GObject.__init__(self)
gtk.Widget.__init__(self)
self.set_flags(self.flags() | gtk.NO_WINDOW )
self._pixbuf = None
self._dimention = cellDimention
self._radius_factor = cellRadius
self._keyPosition = cellKeyPosition
# variables related to animation
self._crossFade = crossFade
self.inAnimation = False
self.duration = 1500 # milliseconds
self.fps = 24 # frames per second
self.totalFrames = 0
self.currentFrame = 0
self.transitionPixbuf = None
def do_get_property(self, property):
if property.name == 'pixbuf':
return self._pixbuf
elif property.name == 'dimention':
return self._dimention
elif property.name == 'radius-factor':
return self._radius_factor
elif property.name == 'keyPosition':
return self._keyPosition
elif property.name == 'crossFade':
return self._crossFade
else:
raise AttributeError, 'unknown property %s' % property.name
def do_set_property(self, property, value):
if property.name == 'pixbuf':
if self.__shouldReplace(value):
if self._crossFade and not (self._pixbuf == None) and not (value == None) :
self.transitionPixbuf = value
if self.fps < 1: self.fps = 24 # reset fps if not valid fps
timeBetweenFrames = 1000 / self.fps
self.totalFrames = self.duration / timeBetweenFrames
self.currentFrame = 1
gobject.timeout_add( timeBetweenFrames, self.animate_callback)
self.inAnimation = True
else:
self._pixbuf = value
elif property.name == 'dimention':
self._dimention = value
elif property.name == 'radius-factor':
self._radius_factor = value
elif property.name == 'keyPosition':
self._keyPosition = value
elif property.name == 'crossFade':
self._crossFade = value
else:
raise AttributeError, 'unknown property %s' % property.name
def animate_callback(self):
if self.currentFrame > self.totalFrames :
self.inAnimation = False
self._pixbuf = self.transitionPixbuf
return False
else:
self.currentFrame += 1
self.queue_draw()
return True
def set_from_pixbuf(self, pixbuf ):
self.set_property('pixbuf', pixbuf)
self.queue_draw()
def set_from_file(self,filename):
inputimage = open(filename)
imagebuf = inputimage.read()
try:
pixbufloader = gtk.gdk.PixbufLoader()
pixbufloader.write(imagebuf)
pixbufloader.close()
except:
return
pixbuf = pixbufloader.get_pixbuf()
self.set_property('pixbuf', pixbuf)
self.queue_draw()
def do_size_request(self,requisition):
requisition.width = self._dimention
requisition.height = self._dimention
def do_expose_event(self, evnt):
if not self._pixbuf: return
ctx = evnt.window.cairo_create()
cell_area = self.get_allocation()
if self.inAnimation :
self.__draw( ctx , cell_area , self._pixbuf, 1 - (float(self.currentFrame) / self.totalFrames))
self.__draw( ctx , cell_area , self.transitionPixbuf,(float(self.currentFrame) / self.totalFrames))
else:
self.__draw( ctx , cell_area , self._pixbuf, 1)
def __shouldReplace(self,pixbuf):
#checkEquivalence
if (self._pixbuf != None) and (pixbuf != None) and pixbuf.get_pixels() == self._pixbuf.get_pixels():
return False
else:
return True
def __draw (self,ctx, cell_area, pixbuf, alpha):
ctx.save()
ctx.set_antialias(cairo.ANTIALIAS_SUBPIXEL)
cell_x, cell_y, cell_width, cell_height = cell_area
pix_width = pixbuf.get_width()
pix_height = pixbuf.get_height()
ctx.translate(cell_x, cell_y)
if (pix_width > self._dimention) or (pix_height > self._dimention):
scale_factor = float(self._dimention) / max (pix_width,pix_height)
else:
scale_factor = 1
scale_width = pix_width* scale_factor
scale_height = pix_height* scale_factor
self.__translate_keyPostion( ctx, self._keyPosition,cell_width,cell_height,scale_width,scale_height)
scale_radius = self._dimention * self._radius_factor
self.__roundedrecMoonlight(ctx,0,0,scale_width,scale_height, scale_radius)
ctx.clip()
ctx.scale(scale_factor,scale_factor)
ctx.set_source_pixbuf(pixbuf,0,0)
ctx.paint_with_alpha (alpha)
ctx.restore()
def __translate_keyPostion(self,cr, key, w, h ,sw, sh):
if key in [gtk.ANCHOR_NORTH_WEST,gtk.ANCHOR_WEST,gtk.ANCHOR_SOUTH_WEST] : x = 0
elif key in [gtk.ANCHOR_NORTH,gtk.ANCHOR_CENTER,gtk.ANCHOR_SOUTH] : x = (w/2) - (sw/2)
else: x = w - sw
if key in [gtk.ANCHOR_NORTH_WEST,gtk.ANCHOR_NORTH,gtk.ANCHOR_NORTH_EAST] : y = 0
elif key in [gtk.ANCHOR_EAST,gtk.ANCHOR_CENTER,gtk.ANCHOR_WEST] : y = (h/2) - (sh/2)
else: y = h - sh
cr.translate( x, y)
def __roundedrecMoonlight(self, cr,x,y,w,h,radius=5):
# http://cairographics.org/cookbook/roundedrectangles/
# modified from mono moonlight aka mono silverlight
# test limits (without using multiplications)
# http://graphics.stanford.edu/courses/cs248-98-fall/Final/q1.html
ARC_TO_BEZIER = 0.55228475
if radius > (min(w,h)/2):
radius = (min(w,h)/2)
#approximate (quite close) the arc using a bezier curve
c = ARC_TO_BEZIER * radius
cr.new_path();
cr.move_to ( x + radius, y)
cr.rel_line_to ( w - 2 * radius, 0.0)
cr.rel_curve_to ( c, 0.0, radius, c, radius, radius)
cr.rel_line_to ( 0, h - 2 * radius)
cr.rel_curve_to ( 0.0, c, c - radius, radius, -radius, radius)
cr.rel_line_to ( -w + 2 * radius, 0)
cr.rel_curve_to ( -c, 0, -radius, -c, -radius, -radius)
cr.rel_line_to (0, -h + 2 * radius)
cr.rel_curve_to (0.0, -c, radius - c, -radius, radius, -radius)
cr.close_path ()
gobject.type_register( avatarHolder )
class inputBox( gtk.TextView ):
__gsignals__ = {
'message-send':(gobject.SIGNAL_RUN_LAST|gobject.SIGNAL_ACTION,
gobject.TYPE_NONE, ()),
'escape-pressed':(gobject.SIGNAL_RUN_LAST|gobject.SIGNAL_ACTION,
gobject.TYPE_NONE, ())
}
def __init__(self):
gobject.GObject.__init__(self)
gtk.binding_entry_add_signal(self, gtk.keysyms.KP_Enter, 0, 'message-send')
gtk.binding_entry_add_signal(self, gtk.keysyms.Return, 0, 'message-send')
gtk.binding_entry_add_signal(self, gtk.keysyms.Escape, 0, 'escape-pressed')
gobject.type_register( inputBox )
class TinyArrow(gtk.DrawingArea):
LENGTH = 8
WIDTH = 5
def __init__(self, arrow_type, shadow=gtk.SHADOW_NONE):
gtk.DrawingArea.__init__(self)
self.arrow_type = arrow_type
self.shadow = shadow
self.margin = 0
self.set_size_request(*self.get_size())
self.connect("expose_event", self.expose)
def get_size(self):
if self.arrow_type in (gtk.ARROW_LEFT, gtk.ARROW_RIGHT):
return (TinyArrow.WIDTH + self.margin*2, \
TinyArrow.LENGTH + self.margin*2)
else:
return (TinyArrow.LENGTH + self.margin*2, \
TinyArrow.WIDTH + self.margin*2)
def expose(self, widget=None, event=None):
if self.window is None:
return
self.window.clear()
width, height = self.get_size()
self.get_style().paint_arrow(self.window, self.state, \
self.shadow, None, self, '', self.arrow_type, True, \
0, 0, width, height)
return False
def set(self, arrow_type, shadow=gtk.SHADOW_NONE, margin=None):
self.arrow_type = arrow_type
self.shadow = shadow
if margin is not None:
self.margin = margin
self.set_size_request(*self.get_size())
self.expose()
class WidgetToggleBox(gtk.Widget):
'''A box that represents a widget and allows toggling its visibility'''
def __init__(self, config, key, description, label):
gtk.Widget.__init__(self)
self.description = description
self.label = label
self.config = config
self.key = key
self.enabled = False
self.inside = False
if self.config and key:
self.enabled = self.config.user[key]
def do_realize(self):
'''Initializes the gtk window'''
self.set_flags(gtk.REALIZED)
mask = gtk.gdk.EXPOSURE_MASK | gtk.gdk.BUTTON_PRESS_MASK | \
gtk.gdk.LEAVE_NOTIFY_MASK | gtk.gdk.ENTER_NOTIFY_MASK
self.window = gtk.gdk.Window(
self.get_parent_window(),
x=self.allocation.x,
y=self.allocation.y,
width=self.allocation.width,
height=self.allocation.height,
window_type=gtk.gdk.WINDOW_CHILD,
wclass=gtk.gdk.INPUT_OUTPUT,
event_mask=self.get_events() | mask)
self.window.set_user_data(self)
self.style2 = self.style.copy()
self.style2.attach(self.window)
self.style2.set_background(self.window, self.state)
self.window.move_resize(*self.allocation)
if gtk.gtk_version >= (2, 12, 0) and \
gtk.pygtk_version >= (2, 12, 0) and self.description:
self.set_tooltip_text(self.description.replace("_", ""))
def do_unrealize(self):
'''Destroys the window'''
self.window.set_user_data(None)
self.window.destroy()
def do_size_allocate(self, allocation):
'''Resizes the window'''
self.allocation = allocation
if self.flags() & gtk.REALIZED:
self.window.move_resize(*allocation)
def do_expose_event(self, event):
'''Renders the box'''
if self.enabled:
state = gtk.STATE_SELECTED
else:
if self.inside:
state = gtk.STATE_PRELIGHT
else:
state = gtk.STATE_NORMAL
self.style2.paint_box(self.window, state,
gtk.SHADOW_ETCHED_IN, event.area, self, '', 0, 0,
self.allocation.width, self.allocation.height)
def do_button_press_event(self, event):
'''Called when the user clicks the widget'''
if self.key:
self.enabled = not self.enabled
self.queue_draw()
if self.config:
self.config.user[self.key] = self.enabled
def do_enter_notify_event(self, event):
'''Called when the mouse pointer enters the widget
Sets a informative label text'''
if self.description:
self.inside = True
self.label.set_text_with_mnemonic(self.description)
self.queue_draw()
def do_leave_notify_event(self, event):
'''Called when the mouse pointer leaves the widget'''
if self.description:
self.inside = False
self.label.set_text('')
self.queue_draw()
gobject.type_register(WidgetToggleBox)
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