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import logging
from gettext import gettext as _
import cairo
import gobject
import gtk
import random
import game
logger = logging.getLogger('PlayGo.boardwidget')
class BoardWidget(gtk.EventBox):
"Gtk widget for drawing the graphical board."""
__gsignals__ = {
'insert-requested': (gobject.SIGNAL_RUN_FIRST, None, [int]),
}
def __init__( self, aBoard, activity ):
"""
Startup the board widget
1. setup our signals: expose, insert, button and mouse movement
2. initialize the tracking variables
3. read in the stone source bitmaps
"""
gtk.EventBox.__init__( self )
self.output = gtk.DrawingArea()
self.set_property('child', self.output)
self.output.connect('expose-event', self.expose_cb)
self.add_events(gtk.gdk.POINTER_MOTION_MASK)
self.connect('button-release-event', self.__class__.button_release_cb)
self.connect('motion-notify-event', self.__class__.motion_cb)
#self.connect('size-request', self.__class__.sizeRequest_cb)
self.activity = activity
self.drawCoords = 1
self.size = aBoard.size
self.lastUnit = 0
self.lastDat = -1
self.lastX = 0
self.lastY = 0
self.myBoard = aBoard
self.myGame = None
self.lastColor = 2
logger.setLevel( logging.DEBUG )
# get the bitmap for genuine simulated white stone
input = open("./images/white.gif")
imagebuf = input.read()
pixbufloader = gtk.gdk.PixbufLoader()
pixbufloader.write(imagebuf)
pixbufloader.close()
self.pixWhite = pixbufloader.get_pixbuf()
# get the bitmap for genuine simulated black stone
input = open("./images/black.gif")
imagebuf = input.read()
pixbufloader = gtk.gdk.PixbufLoader()
pixbufloader.write(imagebuf)
pixbufloader.close()
self.pixBlack = pixbufloader.get_pixbuf()
logger.debug( "baord widget started" )
def sizeRequest_cb(self, requistion ):
requistion.width = 8
requistion.height = 8
def check_coord (self, x, y):
"""
check to see if x and y are within the board grid
"""
return x >= 0 and x < self.size and y >= 0 and y < self.size
def insert(self, dat, value):
"""
Perform a Stone placement, this is called directly from self
when playing a local game or from the tube to a remote player
managed in game.py
"""
color = dat >> 16
x = dat & 0xff
y = ( dat >> 8 ) & 0xff
logger.debug( 'stone event x=%d y=%d col=%d value=%d', x,y, dat, color )
assert x < self.myBoard.size
assert y < self.myBoard.size
self.myBoard.setPointi( x, y, color )
self.update_score(self.myBoard.score)
return None
def update_score(self, score):
if score == 0:
return 0
self.activity.info_panel.show_score(_("Score is: Whites %(W)d - Blacks %(B)d" % score))
# def remove(self, column, value):
# """Return:
# None : no winner
# 0, 1: player 0/1 wins the game
# """
# y = column & 0xff
# x = column >> 8
#
# logger.debug( 'remove stone event x=%d y=%d col=%d value=%d', x,y,column, value )
#
# assert x < self.myBoard.size
# assert y < self.myBoard.size
#
# self.myBoard.setPointi( x, y, 0 )
# return None
def draw_background(self, rect, unit, ctx):
"""
set the board window's background to the board image
"""
ct = gtk.gdk.CairoContext(ctx)
ct.set_source_pixbuf(self.pixBoard,0,0)
ctx.paint()
ctx.stroke()
def draw_lines(self, rect, unit, ctx):
"""
draw the grid and star points onto the board bitmap
"""
# single width balck lines
ctx.set_line_width(1)
ctx.set_source_rgba(0, 0, 0, 1)
for i in xrange(self.size + 1):
ctx.move_to( unit, i * unit)
ctx.line_to(self.size * unit, i * unit )
for i in xrange(self.size + 1):
ctx.move_to(i * unit, unit )
ctx.line_to(i * unit, self.size * unit)
ctx.stroke()
# star point coords per board size
if self.size == 19 :
seq = [ 4, 10, 16 ]
elif self.size == 13 :
seq = [ 4, 7, 10 ]
elif self.size == 9 :
seq = [ 3, 7 ]
# set the middle singleton
ctx.arc( unit * 5, unit * 5, 3, 0, -1e-10)
ctx.fill_preserve()
ctx.stroke()
else :
seq = []
# stroke in the star points
#TODO: adjust size for teeny boards
for x in seq :
for y in seq :
ctx.arc( unit * x, unit * y, 3, 0, -1e-10)
ctx.fill_preserve()
ctx.stroke()
def draw_stone(self, x, y, color, unit, ctx):
"""
paint a single stone on a point
"""
x = x + 1
y = y + 1
ct = gtk.gdk.CairoContext(ctx)
if color == 0 :
ct.set_source_pixbuf(self.pixBlackSized, unit*x - unit/2, unit*y - unit/2 )
else :
ct.set_source_pixbuf(self.pixWhiteSized, unit*x - unit/2, unit*y - unit/2 )
ctx.paint()
def draw_stones( self, ctx ):
"""
paint all the stones on the board
"""
for x in self.myBoard.status.keys() :
if self.myBoard.status[x] == 'B' :
self.draw_stone( x[0], x[1], 1, self.lastUnit, ctx )
else :
self.draw_stone( x[0], x[1], 0, self.lastUnit, ctx )
ctx.stroke()
def get_mouse_event_col(self, event):
"""
calculate the x and y position on the board given pixel address
"""
unit, x0, y0 = self.get_coordinates(self.get_allocation())
x = ( ( event.x - x0 ) / unit ) - 0.5
y = ( ( event.y - y0 ) / unit ) - 0.5
return int(x), int(y)
def legal(self, x, y ):
"""
boolean check if the stone play is legal
"""
if self.myBoard.status.has_key( (x,y) ) :
self.activity.info_panel.show(_("There already is a stone there!"))
return False
c = 'W'
if self.lastColor is 1 :
c = 'B'
if not self.myBoard.legal( (x,y), c ) :
self.activity.info_panel.show(_("Illegal move"))
return False
if self.myBoard.checkKo( (x, y), c):
self.activity.info_panel.show(_("Ko violation!"))
return False
logger.debug( " returning legal ")
return True
def motion_cb(self, event):
"""
When the mouse moves, find out if it is a legal point
if it is a legal point place the transparent stone on
the point and erase the previously placed transparent
stone
"""
x, y = self.get_mouse_event_col(event)
dat = ( y << 8 ) + x
if not self.check_coord( x, y ) :
return
if dat == self.lastDat :
return
if self.lastX is not -1 :
self.myWidget.window.clear_area( int(self.lastX - self.lastUnit/2), int(self.lastY - self.lastUnit/2), int(self.lastUnit), int(self.lastUnit) )
if self.myBoard.status.has_key( (x,y) ) :
self.lastX = -1
return
# the board is zero based and there is a 1 unit border so bump x&y
x += 1
y += 1
# we need a cario context for drawing on top of the board bitmap
ctx = self.myWidget.window.cairo_create()
# decide whether black or white and set transparent
if ( ( self.myGame is None ) and ( self.lastColor == 2 ) ) or \
( self.myGame and not self.myGame.is_initiator ) :
ctx.set_source_rgba(0, 0, 0, .5 )
else :
ctx.set_source_rgba(0xff, 0xff, 0xff, .5 )
# rember our state
self.lastDat = dat
self.lastX = self.lastUnit * x
self.lastY = self.lastUnit * y
# now draw a transparent stone a 4 pixels smaller than the unit
ctx.arc( self.lastX, self.lastY, self.lastUnit/2 -4, 0, -1e-10)
ctx.fill_preserve()
ctx.stroke()
del ctx
def button_release_cb(self, event):
"""
When the mouse button is released drop a stone on the board
"""
x, y = self.get_mouse_event_col(event)
dat = ( y << 8 ) + x
logger.debug( 'Button release event x=%d y=%d, pixx=%d pixy=%d', x,y, event.x, event.y )
if self.myGame is None :
if ( event.button != 3 ) :
#if self.myBoard.status.has_key( (x,y) ):
if not self.legal( x, y ) :
return
else :
if self.lastColor is 1:
dat = dat | 0x10000
self.lastColor = 2;
self.activity.info_panel.show(_("Black's turn "))
else :
dat = dat | 0x20000
self.lastColor = 1;
self.activity.info_panel.show(_("White's turn "))
self.lastX = 0;
self.insert( dat, 1 )
else:
if event.button != 3 :
if self.myGame.is_initiator :
dat = dat | 0x10000
else :
dat = dat | 0x20000
self.lastX = -1;
self.emit('insert-requested', dat )
self.window.invalidate_rect(self.get_allocation(), True)
def queue_draw(self):
self.output.queue_draw()
def get_coordinates(self, rect):
"""Returns tuple (unit size, origin x, origin y) suitable for drawing
a grid within @rect."""
rect = self.get_allocation()
unit = rect.height / float(self.size )
x0 = rect.x + (rect.width - self.size * unit) / 2.0
y0 = rect.y
# if rect.height / float(self.rows) < rect.width / float(self.size):
# # wide
# unit = rect.height / float(self.rows)
# x0 = rect.x + (rect.width - self.size * unit) / 2.0
# y0 = rect.y
# else:
# # narrow
# unit = rect.width / float(self.size)
# x0 = rect.x
# y0 = rect.y + (rect.height - self.rows * unit) / 2.0
#
# now shrink the size for a 1 unit border
unit = unit - unit / self.size
#return unit, x0, y0
return unit, 0, 0
def draw(self, rect, ctx, win):
"""Draw a board using the cairo context @ctx within the rectangle
@rect."""
#ctx.save()
ctx.set_line_cap(cairo.LINE_CAP_ROUND)
unit, x0, y0 = self.get_coordinates(rect)
# I could not find the resize event so...
if self.lastUnit != unit :
pixbuf = gtk.gdk.pixbuf_new_from_file_at_size("./images/board.gif", rect.width, rect.height )
pixmap, mask = pixbuf.render_pixmap_and_mask()
del pixbuf
pctx = pixmap.cairo_create()
self.draw_lines( rect, unit, pctx )
win.set_back_pixmap(pixmap, False )
del pixmap
del pctx
# now resize the stones
self.pixBlackSized = self.pixBlack.scale_simple( int(unit), int(unit), gtk.gdk.INTERP_BILINEAR )
self.pixWhiteSized = self.pixWhite.scale_simple( int(unit), int(unit), gtk.gdk.INTERP_BILINEAR )
self.lastUnit = unit
# redraw it all
win.invalidate_rect( rect, False )
# bx, by = self.pixBoard.get_size()
# if rect.height > by :
# self.pixBoard = self.pixBoard.scaleSimple( bx, by, gtk.gdk.INTERP_BILINEAR )
ctx.translate( x0, y0 )
self.draw_stones( ctx )
def expose_cb(self, widget, event):
rect = self.get_allocation()
unit, x0, y0 = self.get_coordinates(rect)
if self.lastUnit != unit :
logger.debug( 'resizing the window to %d', rect.height )
self.lastUnit = -1
if rect.height > rect.width :
widget.window.resize( rect.width, rect.width )
else :
widget.window.resize( rect.height, rect.height )
#
self.myWidget = widget
ctx = widget.window.cairo_create()
ctx.save()
rect = self.get_allocation()
self.draw(rect, ctx, widget.window )
ctx.restore()
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