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import logging
import cairo
import gobject
import gtk
import game
logger = logging.getLogger('PlayGo-activity.gridwidget')
class BoardWidget(gtk.EventBox):
"Gtk widget for drawing the graphical board."""
__gsignals__ = {
'insert-requested': (gobject.SIGNAL_RUN_FIRST, None, [int]),
}
def __init__( self, aBoard ):
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.drawCoords = 1
self.columns = aBoard.size
self.rows = aBoard.size
self.lastUnit = 0
self.myBoard = aBoard
self.lastColor = 1
# get the bitmap for genuine simulated wooden board
input = open("./images/board.gif")
imagebuf = input.read()
pixbufloader = gtk.gdk.PixbufLoader()
pixbufloader.write(imagebuf)
pixbufloader.close()
self.pixBoard = pixbufloader.get_pixbuf()
# 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()
def check_coord (self, i, j):
return i >= 0 and i < self.rows and j >= 0 and j < self.columns
def insert(self, column, value):
"""Return:
None : no winner
0, 1: player 0/1 wins the game
"""
discs = [row[column] for row in self.grid]
if -1 not in discs:
raise ValueError('Column is full')
row = self.rows - list(reversed(discs)).index(-1) - 1
self.grid[row][column] = value
return self.check_winner(row, column, value)
def draw_background(self, rect, unit, ctx):
ct = gtk.gdk.CairoContext(ctx)
ct.set_source_pixbuf(self.pixBoard,0,0)
ctx.paint()
ctx.stroke()
def draw_lines(self, rect, unit, ctx):
# single width balck lines
ctx.set_line_width(1)
ctx.set_source_rgba(0, 0, 0, 1)
for i in xrange(self.rows + 1):
ctx.move_to( unit, i * unit)
ctx.line_to(self.columns * unit, i * unit )
for i in xrange(self.columns + 1):
ctx.move_to(i * unit, unit )
ctx.line_to(i * unit, self.rows * unit)
ctx.stroke()
# star point coords per board size
if self.columns == 19 :
seq = [ 4, 10, 16 ]
elif self.columns == 13 :
seq = [ 4, 7, 10 ]
elif self.columns == 9 :
seq = [ 3, 7 ]
# set the middle singleton
ctx.arc( unit * 5, unit * 5, 3, 0, -1e-10)
ctx.fill_preserve()
ctx.stroke()
# 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):
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 ):
for x in xrange(self.rows):
for y in xrange(self.columns):
point = self.myBoard.getPoint( x, y )
if ( point == 1 ) :
self.draw_stone( x, y, 1, self.lastUnit, ctx )
elif ( point == 2 ) :
self.draw_stone( x, y, 0, self.lastUnit, ctx )
ctx.stroke()
def get_mouse_event_col(self, event):
unit, x0, y0 = self.get_coordinates(self.get_allocation())
col = ( event.x - x0 ) / unit
row = ( event.y - y0 ) / unit
return int(row), int(col)
def motion_cb(self, event):
col = self.get_mouse_event_col(event)
def button_release_cb(self, event):
self.motion_cb(event)
row, col = self.get_mouse_event_col(event)
self.myBoard.setPointi( col, row, self.lastColor )
if self.lastColor == 1:
self.lastColor = 2
else :
self.lastColor = 1
self.window.invalidate_rect(self.get_allocation(), True)
#self.emit('insert-requested', col)
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."""
if rect.height / float(self.rows) < rect.width / float(self.columns):
# wide
unit = rect.height / float(self.rows)
x0 = rect.x + (rect.width - self.columns * unit) / 2.0
y0 = rect.y
else:
# narrow
unit = rect.width / float(self.columns)
x0 = rect.x
y0 = rect.y + (rect.height - self.rows * unit) / 2.0
# now shrink the size for a 1 unit boarder
unit = unit - unit / self.rows
return unit, x0, y0
def draw(self, rect, ctx):
"""Draw a grid 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 :
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
# 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_background( rect, unit, ctx )
self.draw_lines( rect, unit, ctx )
self.draw_stones( ctx )
ctx.restore()
def expose_cb(self, widget, event):
ctx = widget.window.cairo_create()
rect = self.get_allocation()
self.draw(rect, ctx)
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