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from math import e
from random import randint
from sys import maxint
import gtk, gobject
from gobject import SIGNAL_RUN_FIRST, TYPE_NONE
from pychess.System.glock import glock_connect
from pychess.System.prefix import addDataPrefix
from pychess.Utils.const import WHITE, DRAW, RUNNING, WHITEWON, BLACKWON
from pychess.Utils.lutils import leval
__title__ = _("Score")
__icon__ = addDataPrefix("glade/panel_score.svg")
__desc__ = _("The score panel tries to evaluate the positions and shows you a graph of the game progress")
class Sidepanel:
def load (self, gmwidg):
self.plot = ScorePlot()
__widget__ = gtk.ScrolledWindow()
__widget__.set_policy(gtk.POLICY_NEVER, gtk.POLICY_AUTOMATIC)
port = gtk.Viewport()
port.add(self.plot)
port.set_shadow_type(gtk.SHADOW_NONE)
__widget__.add(port)
__widget__.show_all()
self.boardview = gmwidg.board.view
self.plot.connect("selected", self.plot_selected)
self.boardview.connect('shown_changed', self.shown_changed)
glock_connect(self.boardview.model, "game_changed", self.game_changed)
glock_connect(self.boardview.model, "moves_undoing", self.moves_undoing)
# Add the initial board
glock_connect(self.boardview.model, "game_started", self.game_changed)
def changed (vadjust):
if not hasattr(vadjust, "need_scroll") or vadjust.need_scroll:
vadjust.set_value(vadjust.upper-vadjust.page_size)
vadjust.need_scroll = True
__widget__.get_vadjustment().connect("changed", changed)
def value_changed (vadjust):
vadjust.need_scroll = abs(vadjust.value + vadjust.page_size - \
vadjust.upper) < vadjust.step_increment
__widget__.get_vadjustment().connect("value-changed", value_changed)
return __widget__
def moves_undoing (self, model, moves):
for i in xrange(moves):
self.plot.undo()
# As shown_changed will normally be emitted just after game_changed -
# if we are viewing the latest position - we can do the selection change
# now, and thereby avoid redraw being called twice
if self.plot.selected == model.ply-model.lowply:
self.plot.select(model.ply-model.lowply - moves)
self.plot.redraw()
def game_changed (self, model):
if len(self.plot)+model.lowply > model.ply:
return
for i in xrange(len(self.plot)+model.lowply, model.ply):
points = leval.evaluateComplete(model.getBoardAtPly(i).board, WHITE, True)
self.plot.addScore(points)
if model.status == DRAW:
points = 0
elif model.status == WHITEWON:
points = maxint
elif model.status == BLACKWON:
points = -maxint
else:
points = leval.evaluateComplete(model.getBoardAtPly(model.ply).board, WHITE, True)
self.plot.addScore(points)
# As shown_changed will normally be emitted just after game_changed -
# if we are viewing the latest position - we can do the selection change
# now, and thereby avoid redraw being called twice
if self.plot.selected == model.ply-model.lowply -1:
self.plot.select(model.ply-model.lowply)
self.plot.redraw()
# Uncomment this to debug eval function
return
board = model.boards[-1].board
opboard = model.boards[-1].clone().board
opboard.setColor(1-opboard.color)
material, phase = leval.evalMaterial (board)
if board.color == WHITE:
print "material", -material
e1 = leval.evalKingTropism (board)
e2 = leval.evalKingTropism (opboard)
print "evaluation: %d + %d = %d " % (e1, e2, e1+e2)
p1 = leval.evalPawnStructure (board, phase)
p2 = leval.evalPawnStructure (opboard, phase)
print "pawns: %d + %d = %d " % (p1, p2, p1+p2)
print "knights:",-leval.evalKnights (board)
print "king:",-leval.evalKing(board,phase)
else:
print "material", material
print "evaluation:",leval.evalKingTropism (board)
print "pawns:", leval.evalPawnStructure (board, phase)
print "pawns2:", leval.evalPawnStructure (opboard, phase)
print "pawns3:", leval.evalPawnStructure (board, phase) + \
leval.evalPawnStructure (opboard, phase)
print "knights:",leval.evalKnights (board)
print "king:",leval.evalKing(board,phase)
print "----------------------"
def shown_changed (self, boardview, shown):
if self.plot.selected != shown:
self.plot.select(shown-self.boardview.model.lowply)
self.plot.redraw()
def plot_selected (self, plot, selected):
self.boardview.shown = selected+self.boardview.model.lowply
class ScorePlot (gtk.DrawingArea):
__gtype_name__ = "ScorePlot"+str(randint(0,maxint))
__gsignals__ = {
"selected" : (SIGNAL_RUN_FIRST, TYPE_NONE, (int,))
}
def __init__ (self):
gtk.DrawingArea.__init__(self)
self.connect("expose_event", self.expose)
self.connect("button-press-event", self.press)
self.connect("key_press_event", self.key_press)
self.props.can_focus = True
self.set_events(gtk.gdk.BUTTON_PRESS_MASK|gtk.gdk.KEY_PRESS_MASK)
self.moveHeight = 12
self.scores = []
self.selected = 0
def addScore (self, score):
self.scores.append(score)
def __len__ (self):
return len(self.scores)
def undo (self):
del self.scores[-1]
def select (self, index):
self.selected = index
def clear (self):
del self.scores[:]
def redraw (self):
if self.window:
a = self.get_allocation()
rect = gtk.gdk.Rectangle(0, 0, a.width, a.height)
self.window.invalidate_rect(rect, True)
self.window.process_updates(True)
def press (self, widget, event):
self.grab_focus()
self.emit('selected', event.y/self.moveHeight)
from gtk.gdk import keyval_from_name
ups = set(map (keyval_from_name, ("KP_Up", "Up")))
downs = set(map (keyval_from_name, ("KP_Down", "Down")))
def key_press (self, widget, event):
if event.keyval in self.ups:
if self.selected > 0:
self.emit('selected', self.selected-1)
elif event.keyval in self.downs:
if self.selected+1 < len(self.scores):
self.emit('selected', self.selected+1)
return True
def expose (self, widget, event):
context = widget.window.cairo_create()
context.rectangle(event.area.x, event.area.y,
event.area.width, event.area.height)
context.clip()
self.draw(context)
self.set_size_request(-1, (len(self.scores))*self.moveHeight)
return False
def draw (self, cr):
width = self.get_allocation().width
height = len(self.scores)*self.moveHeight
########################################
# Draw background #
########################################
cr.set_source_rgb (1, 1, 1)
cr.rectangle(0, 0, width, height)
cr.fill()
########################################
# Draw dark middle line #
########################################
cr.set_source_rgb (0, 0, 0)
cr.move_to(width/2., 0)
cr.line_to(width/2., height)
cr.set_line_width(0.15)
cr.stroke()
########################################
# Draw the actual plot (dark area) #
########################################
sign = lambda n: n == 0 and 1 or n/abs(n)
if self.scores:
mapper = lambda score: (e**(-5e-4*abs(score))-1) * sign(score)
cr.set_source_rgb (0, 0, 0)
cr.move_to(width, 0)
cr.line_to(width/2 - width/2*mapper(self.scores[0]), 0)
for i, score in enumerate(self.scores):
x = width/2 - width/2*mapper(score)
y = (i+1) * self.moveHeight
cr.line_to(x, y)
cr.line_to(width, height)
cr.fill_preserve()
########################################
# Draw light middle line #
########################################
cr.save()
cr.clip()
cr.set_source_rgb (1, 1, 1)
cr.move_to(width/2., 0)
cr.line_to(width/2., height)
cr.set_line_width(0.15)
cr.stroke()
cr.restore()
########################################
# Draw selection #
########################################
lw = 2.
cr.set_line_width(lw)
y = (self.selected)*self.moveHeight
cr.rectangle(lw/2, y-lw/2, width-lw, self.moveHeight+lw)
col = self.get_style().base[gtk.STATE_SELECTED]
r, g, b = map(lambda x: x/65535., (col.red, col.green, col.blue))
cr.set_source_rgba (r, g, b, .15)
cr.fill_preserve()
cr.set_source_rgb (r, g, b)
cr.stroke()
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