python-soya 0.15~rc1-10 / usr / share / pyshared / soya / gui / widgets.py

# -*- indent-tabs-mode: t -*-
# -*- coding: utf-8 -*-

# Soya 3D
# Copyright (C) 2007 Jean-Baptiste LAMY -- jiba@tuxfamily.org
#
# This program 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.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

import soya, soya.sdlconst as sdlconst, soya.opengl as opengl

STYLE                = None
HIGHLIGHT_WIDGET     = None
MOUSE_GRABBER_WIDGET = None
FOCUSED_WIDGET       = None

def set_style(style):
  global STYLE
  STYLE = style

class CalcSizeRestart(Exception): pass

class Widget(object):
	def __init__(self, parent = None):
		self.x      = 0
		self.y      = 0
		self.width  = 0
		self.height = 0
		
		self.extra_width  = 0.0
		self.extra_height = 0.0
		
		self.min_width    = 0
		self.min_height   = 0
		
		self.ideal_width  = 0
		self.ideal_height = 0
		
		if parent: parent.add(self)
		else: self.parent = None
		
	def added_into(self, parent):
		self.parent = parent
		if parent: self.request_resize()
		
	def get_window(self):
		ancestor = self.parent
		while ancestor:
			if isinstance(ancestor, Window): return ancestor
			ancestor = ancestor.parent
			
	def request_resize(self, widget = None):
		if self.parent: self.parent.request_resize(self)
		
	def resize(self, x, y, width, height):
		self.reset_size()
		while 1:
			try:
				self.calc_size()
				self.allocate(x, y, width, height)
			except CalcSizeRestart: continue
			break
		
	def reset_size(self): pass
	
	def calc_size(self): pass
	
	def allocate(self, x, y, width, height):
		if self.extra_width == -1:
			self.width = min(width, self.ideal_width)
			self.x     = x + (width - self.width) // 2
		else:
			self.width  = width
			self.x      = x
		
		if self.extra_height == -1:
			self.height = min(height, self.ideal_height)
			self.y      = y + (height - self.height) // 2
		else:
			self.height = height
			self.y      = y
			
	def move(self, x, y): self.allocate(x, y, self.width, self.height)
	
	def render(self): pass
	
	def set_grab_mouse(self, grab):
		global MOUSE_GRABBER_WIDGET
		if   grab and not MOUSE_GRABBER_WIDGET:             MOUSE_GRABBER_WIDGET = self
		elif (not grab) and (MOUSE_GRABBER_WIDGET is self): MOUSE_GRABBER_WIDGET = None
		
	def on_mouse_pressed (self, button, x, y): pass
		
	def on_mouse_released(self, button, x, y): pass
	
	def on_mouse_move(self, x, y, x_relative, y_relative, state):
		global HIGHLIGHT_WIDGET
		if HIGHLIGHT_WIDGET:
			HIGHLIGHT_WIDGET.set_highlight(0)
			HIGHLIGHT_WIDGET = None
		
	def on_key_pressed (self, key, mods, unicode_key = 0): pass
	def on_key_released(self, key, mods): pass
	
	def on_joy_moved   (self, axis, value): pass
	def on_joy_pressed (self, button): pass
	def on_joy_released(self, button): pass
	
	def begin_round(self): pass
	def advance_time(self, proportion): pass

class HighlightableWidget(Widget):
	def __init__(self):
		self.highlight = 0
	def on_highlight (self, highlight): pass
	def set_highlight(self, highlight):
		global HIGHLIGHT_WIDGET
		if highlight:
			if HIGHLIGHT_WIDGET is not self:
				if HIGHLIGHT_WIDGET: HIGHLIGHT_WIDGET.set_highlight(0)
				HIGHLIGHT_WIDGET = self
				self.highlight = 1
				self.on_highlight(1)
		else:
			if HIGHLIGHT_WIDGET is self:
				HIGHLIGHT_WIDGET = None
				self.highlight = 0
				self.on_highlight(0)
		return 1
	
	def on_mouse_move(self, x, y, x_relative, y_relative, state):
		self.set_highlight(1)
		return 1
	
class FocusableWidget(Widget):
	def __init__(self):
		self.focus = 0
	def on_focus (self, focus): pass
	def set_focus(self, focus, from_side = -1):
		global FOCUSED_WIDGET
		if focus:
			if FOCUSED_WIDGET is not self:
				if FOCUSED_WIDGET: FOCUSED_WIDGET.set_focus(0)
				FOCUSED_WIDGET = self
				
				window = self.get_window()
				if window: window.last_focused_widget = self
				
				self.focus = 1
				self.on_focus(1)
		else:
			if FOCUSED_WIDGET is self:
				FOCUSED_WIDGET = None
				self.focus = 0
				self.on_focus(0)
		return 1
		
	def on_mouse_pressed(self, button, x, y):
		self.set_focus(1)
		return 1
		

class Group(Widget):
	def __init__(self, parent):
		Widget.__init__(self, parent)
		self.widgets = []
		self.visible = 1
		
	def recursive(self, l = None):
		if not l: l = []
		for widget in self.widgets:
			if widget:
				l.append(widget)
				if isinstance(widget, Group): widget.recursive(l)
		return l
	
	def add(self, widget):
		self.widgets.append(widget)
		widget.added_into(self)
		
	def remove(self, widget):
		self.widgets.remove(widget)
		widget.added_into(None)
		
	def reset_size(self):
		for widget in self.widgets: widget.reset_size()
		
	def render(self):
		if self.visible:
			for widget in self.widgets:
				if widget: widget.render()
			
	def begin_round(self):
		if self.visible:
			for widget in self.widgets:
				if widget: widget.begin_round()
			
	def advance_time(self, proportion):
		if self.visible:
			for widget in self.widgets:
				if widget: widget.advance_time(proportion)
	
	def move(self, x, y):
		dx = x - self.x
		dy = y - self.y
		self.x = x
		self.y = y
		for widget in self.widgets:
			if widget: widget.move(widget.x + dx, widget.y + dy)
			
	def __repr__(self): return """<%s widgets=[%s]>""" % (self.__class__.__name__, ", ".join([repr(widget) for widget in self.widgets]))


class Layer(Group):
	def set_on_top(self, widget):
		if not widget is self.widgets[-1]:
			self.widgets.remove(widget)
			self.widgets.append(widget)
			
	def calc_size(self):
		for widget in self.widgets:
			widget.calc_size()

		self.ideal_width  = max([widget.ideal_width  for widget in self.widgets])
		self.ideal_height = max([widget.ideal_height for widget in self.widgets])
		self.min_width    = max([widget.min_width    for widget in self.widgets])
		self.min_height   = max([widget.min_height   for widget in self.widgets])
		self.extra_width  = max([widget.extra_width  for widget in self.widgets])
		self.extra_height = max([widget.extra_height for widget in self.widgets])
		
	def allocate(self, x, y, width, height):
		Group.allocate(self, x, y, width, height)
		
		for widget in self.widgets:
			widget.allocate(x, y, width, height)
			
	def on_mouse_pressed(self, button, x, y):
		for widget in self.widgets[::-1]:
			if (widget.x <= x <= widget.x + widget.width) and (widget.y <= y <= widget.y + widget.height):
				if widget.on_mouse_pressed(button, x, y): return 1
			
	def on_mouse_released(self, button, x, y):
		for widget in self.widgets[::-1]:
			if (widget.x <= x <= widget.x + widget.width) and (widget.y <= y <= widget.y + widget.height):
				if widget.on_mouse_released(button, x, y): return 1
			
	def on_mouse_move(self, x, y, x_relative, y_relative, state):
		for widget in self.widgets[::-1]:
			if (widget.x <= x <= widget.x + widget.width) and (widget.y <= y <= widget.y + widget.height):
				if widget.on_mouse_move(x, y, x_relative, y_relative, state): return 1
				
class RootLayer(Layer):
	def __init__(self, parent):
		Layer.__init__(self, parent)
		self.widgets_needing_resize = set()
		
	def request_resize(self, widget):
		self.widgets_needing_resize.add(widget)
		
	def resize(self, x, y, width, height):
		if width == 0: return # Not yet initialized
		Layer.resize(self, x, y, width, height)
		
	def begin_round(self):
		events = soya.MAIN_LOOP.raw_events
		self.process_event(events)
		if self.widgets_needing_resize:
			for widget in self.widgets_needing_resize:
				widget.resize(self.x, self.y, self.width, self.height)
			self.widgets_needing_resize = set()
		Layer.begin_round(self)
	widget_begin_round  = begin_round
	widget_advance_time = Layer.advance_time
	def widget_end_round(self): pass
		
	def process_event(self, events):
		for event in events:
			if   event[0] == sdlconst.MOUSEMOTION:
				if MOUSE_GRABBER_WIDGET: MOUSE_GRABBER_WIDGET.on_mouse_move    (*event[1:])
				else:                    self                .on_mouse_move    (*event[1:])
			elif event[0] == sdlconst.MOUSEBUTTONDOWN:
				if MOUSE_GRABBER_WIDGET: MOUSE_GRABBER_WIDGET.on_mouse_pressed (*event[1:])
				else:                    self                .on_mouse_pressed (*event[1:])
			elif event[0] == sdlconst.MOUSEBUTTONUP  :
				if MOUSE_GRABBER_WIDGET: MOUSE_GRABBER_WIDGET.on_mouse_released(*event[1:])
				else:                    self                .on_mouse_released(*event[1:])
			elif event[0] == sdlconst.KEYDOWN:
				widget = FOCUSED_WIDGET
				while widget:
					if len(event) == 4:
						if widget.on_key_pressed(event[1], event[2], event[3]): break
					else:
						if widget.on_key_pressed(event[1], event[2]): break
					widget = widget.parent
			elif event[0] == sdlconst.KEYUP:
				widget = FOCUSED_WIDGET
				while widget:
					if widget.on_key_released(event[1], event[2]): break
					widget = widget.parent
			elif event[0] == sdlconst.JOYBUTTONDOWN:
				widget = FOCUSED_WIDGET
				while widget:
					if widget.on_joy_pressed(event[1]): break
					widget = widget.parent
				else:
					if   event[1] == 0: self.process_event([(sdlconst.KEYDOWN, sdlconst.K_RETURN, 0, 0)])
					elif event[1] == 1: self.process_event([(sdlconst.KEYDOWN, sdlconst.K_ESCAPE, 0, 0)])
			elif event[0] == sdlconst.JOYBUTTONUP:
				widget = FOCUSED_WIDGET
				while widget:
					if widget.on_joy_released(event[1]): break
					widget = widget.parent
				else:
					if   event[1] == 0: self.process_event([(sdlconst.KEYUP, sdlconst.K_RETURN, 0)])
					elif event[1] == 1: self.process_event([(sdlconst.KEYUP, sdlconst.K_ESCAPE, 0)])
			elif event[0] == sdlconst.JOYAXISMOTION:
				widget = FOCUSED_WIDGET
				while widget:
					if widget.on_joy_moved(event[1], event[2]): break
					widget = widget.parent
				else:
					if   event[1] == 0:
						if   event[2] < -1000: self.process_event([(sdlconst.KEYDOWN, sdlconst.K_LEFT , 0, 0), (sdlconst.KEYUP, sdlconst.K_LEFT , 0)])
						elif event[2] >  1000: self.process_event([(sdlconst.KEYDOWN, sdlconst.K_RIGHT, 0, 0), (sdlconst.KEYUP, sdlconst.K_RIGHT, 0)])
					if   event[1] == 1:
						if   event[2] < -1000: self.process_event([(sdlconst.KEYDOWN, sdlconst.K_UP   , 0, 0), (sdlconst.KEYUP, sdlconst.K_UP   , 0)])
						elif event[2] >  1000: self.process_event([(sdlconst.KEYDOWN, sdlconst.K_DOWN , 0, 0), (sdlconst.KEYUP, sdlconst.K_DOWN , 0)])
			elif event[0] == sdlconst.VIDEORESIZE:
				self.resize(0, 0, event[1], event[2])
						
						
class Table(Group):
	def __init__(self, parent, nb_col = 1, nb_row = 1):
		Group.__init__(self, parent)
		
		self.nb_col      = nb_col
		self.nb_row      = nb_row
		self.col_pad     = STYLE.table_col_pad
		self.row_pad     = STYLE.table_row_pad
		self._col_pads   = 0
		self._row_pads   = 0
		self.border_pad  = 0
		self._next_index = 0
		self.widgets     = [None] * (nb_col * nb_row)

	def skip_case(self, nb = 1):
		self._next_index += nb
		
	def add(self, widget):
		self.widgets[self._next_index] = widget
		self._next_index += 1
		widget.added_into(self)
		
	def set_widget_at(self, widget, col = None, row = None):
		index = col + row * self.nb_col
		if self.widgets[index]: self.remove(self.widgets[index])
		self.widgets[index] = widget
		widget.added_into(self)
		
	def remove(self, widget):
		self.widgets[self.widgets.index(widget)] = None
		widget.added_into(None)
		
	def get_cols(self):
		return [filter(None, [self.widgets[i + j * self.nb_col] for j in range(self.nb_row)]) for i in range(self.nb_col)]
	
	def get_rows(self):
		return [filter(None, self.widgets[i * self.nb_col : (i + 1) * self.nb_col]) for i in range(self.nb_row)]
	
	def get_extra_width(self):
		return max([widget.get_extra_width() for widget in self.widgets])
		
	def reset_size(self):
		for widget in self.widgets:
			if widget: widget.reset_size()
		
	def calc_size(self, calc_min = 1):
		for widget in self.widgets:
			if widget: widget.calc_size()
			
		cols = self.get_cols()
		rows = self.get_rows()
		
		self.ideal_col_widths  = [max([0] + [widget.ideal_width  for widget in col]) for col in cols]
		self.ideal_row_heights = [max([0] + [widget.ideal_height for widget in row]) for row in rows]
		self.min_col_widths    = [max([0] + [widget.min_width    for widget in col]) for col in cols]
		self.min_row_heights   = [max([0] + [widget.min_height   for widget in row]) for row in rows]
		self.extra_col_widths  = [max([-1] + [max(widget.extra_width , 0.0) for widget in col]) for col in cols]
		self.extra_row_heights = [max([-1] + [max(widget.extra_height, 0.0) for widget in row]) for row in rows]
		
		self._col_pads = sum([self.col_pad for width  in self.ideal_col_widths  if width  > 0])
		self._row_pads = sum([self.row_pad for height in self.ideal_row_heights if height > 0])
		if self.border_pad:
			self._col_pads += self.col_pad
			self._row_pads += self.row_pad
		else:
			self._col_pads -= self.col_pad
			self._row_pads -= self.row_pad
			
		self.ideal_width  = self._col_pads + sum(self.ideal_col_widths)
		self.ideal_height = self._row_pads + sum(self.ideal_row_heights)
		if calc_min:
			self.min_width  = self._col_pads + sum(self.min_col_widths)
			self.min_height = self._row_pads + sum(self.min_row_heights)

		self.extra_width  = sum(self.extra_col_widths)
		self.extra_height = sum(self.extra_row_heights)
		
	def allocate(self, x, y, width, height):
		Group.allocate(self, x, y, width, height)
		
		extra = width - self.ideal_width
		if  (extra == 0) or ((extra > 0) and (self.extra_width == 0)):
			self.col_widths = [int(self.ideal_col_widths[i]) for i in range(self.nb_col)]
		elif extra > 0:
			self.col_widths = [int(self.ideal_col_widths[i] + extra * (self.extra_col_widths[i] / self.extra_width)) for i in range(self.nb_col)]
		else:
			available = width - self._col_pads
			required  = sum(self.min_col_widths)
			ideal     = sum(self.ideal_col_widths)
			if ideal == required:
				factor = float(available) / required
				self.col_widths = [int(self.min_col_widths[i] * factor) for i in range(self.nb_col)]
			else:
				factor = float(available - required) / (ideal - required)
				self.col_widths = [int(self.min_col_widths[i] + (self.ideal_col_widths[i] - self.min_col_widths[i]) * factor) for i in range(self.nb_col)]
			
		extra = height - self.ideal_height
		if  (extra == 0) or ((extra > 0) and (self.extra_height == 0)):
			self.row_heights = [int(self.ideal_row_heights[i]) for i in range(self.nb_row)]
		elif extra > 0:
			self.row_heights = [int(self.ideal_row_heights[i] + extra * (self.extra_row_heights[i] / self.extra_height)) for i in range(self.nb_row)]
		else:
			available = height - self._row_pads
			required  = sum(self.min_row_heights)
			ideal     = sum(self.ideal_row_heights)
			if ideal == required:
				factor = float(available) / required
				self.row_heights = [int(self.min_row_heights[i] * factor) for i in range(self.nb_row)]
			else:
				factor = float(available - required) / (ideal - required)
				self.row_heights = [int(self.min_row_heights[i] + (self.ideal_row_heights[i] - self.min_row_heights[i]) * factor) for i in range(self.nb_row)]
				
		wx = x
		if self.border_pad: wx += self.row_pad
		for col in range(self.nb_col):
			wy = y
			if self.border_pad: wy += self.col_pad
			for row in range(self.nb_row):
				widget = self.widgets[col + row * self.nb_col]
				if widget:
					widget.allocate(wx, wy, self.col_widths[col], self.row_heights[row])
				wy += self.row_heights[row] + self.row_pad
			wx += self.col_widths[col] + self.col_pad
			
	def widget_at(self, x, y):
		if (x < 0) or (y < 0): return None
		
		wx = self.x
		if self.border_pad: wx += self.col_pad
		for col in range(self.nb_col):
			wx += self.col_widths[col]
			if x <= wx: break
			wx += self.col_pad
			if x <= wx: return None
		else: return None
		
		wy = self.y
		if self.border_pad: wy += self.row_pad
		for row in range(self.nb_row):
			wy += self.row_heights[row]
			if y <= wy: break
			wy += self.row_pad
			if y <= wy: return None
		else: return None
		
		widget = self.widgets[col + row * self.nb_col]
		if widget and (widget.x <= x <= widget.x + widget.width) and (widget.y <= y <= widget.y + widget.height):
			return widget
		
	def on_mouse_pressed(self, button, x, y):
		widget = self.widget_at(x, y)
		if widget and widget.on_mouse_pressed(button, x, y): return 1
		return super(Table, self).on_mouse_pressed(button, x, y)
		
	def on_mouse_released(self, button, x, y):
		widget = self.widget_at(x, y)
		if widget and widget.on_mouse_released(button, x, y): return 1
		return super(Table, self).on_mouse_released(button, x, y)
		
	def on_mouse_move(self, x, y, x_relative, y_relative, state):
		widget = self.widget_at(x, y)
		if widget and widget.on_mouse_move(x, y, x_relative, y_relative, state): return 1
		return super(Table, self).on_mouse_move(x, y, x_relative, y_relative, state)

	def set_focus(self, focus, from_side = -1):
		if from_side == -1: widgets = self.widgets
		else:               widgets = self.widgets[::-1]
		for widget in widgets:
			if widget and (isinstance(widget, FocusableWidget) or isinstance(widget, Group)) and widget.set_focus(focus, from_side): return 1
			
	def on_key_pressed (self, key, mods, unicode_key = 0):
		if key in _MOVING_KEYS:
			widget = FOCUSED_WIDGET
			while widget and (widget.parent is not self): widget = widget.parent
			i = self.widgets.index(widget)
			col = i %  self.nb_col
			row = i // self.nb_col
			
			if   key == sdlconst.K_UP:
				while row > 0:
					row -= 1
					widget = self.widgets[col + row * self.nb_col]
					if widget and (isinstance(widget, FocusableWidget) or isinstance(widget, Group)) and widget.set_focus(1,  1): return 1
					
			elif key == sdlconst.K_DOWN:
				while row < self.nb_row - 1:
					row += 1
					widget = self.widgets[col + row * self.nb_col]
					if widget and (isinstance(widget, FocusableWidget) or isinstance(widget, Group)) and widget.set_focus(1, -1): return 1
					
			elif (key == sdlconst.K_LEFT) or ((key == sdlconst.K_TAB) and (mods & sdlconst.MOD_LSHIFT)):
				while col > 0:
					col -= 1
					widget = self.widgets[col + row * self.nb_col]
					if widget and (isinstance(widget, FocusableWidget) or isinstance(widget, Group)) and widget.set_focus(1,  1): return 1
					
			elif (key == sdlconst.K_RIGHT) or (key == sdlconst.K_TAB):
				while col < self.nb_col - 1:
					col += 1
					widget = self.widgets[col + row * self.nb_col]
					if widget and (isinstance(widget, FocusableWidget) or isinstance(widget, Group)) and widget.set_focus(1, -1): return 1
					
	def insert_row(self, index):
		for i in range(index * self.nb_col, (index + 1) * self.nb_col): self.widgets.insert(i, None)
		self.nb_row += 1
		
	def delete_row(self, index):
		self.nb_row -= 1
		del self.widgets[index * self.nb_col : (index + 1) * self.nb_col]
		
	def insert_col(self, index):
		self.nb_col += 1
		for i in range(self.nb_row): self.widgets.insert(i * self.nb_col + index, None)
		
	def delete_col(self, index):
		self.nb_col -= 1
		for i in range(self.nb_row): del self.widgets[i * self.nb_col + index]
		
_MOVING_KEYS = set([sdlconst.K_LEFT, sdlconst.K_UP, sdlconst.K_RIGHT, sdlconst.K_DOWN, sdlconst.K_TAB])


class HTable(Table):
	def __init__(self, parent, nb_row = 1):
		Table.__init__(self, parent, 0, nb_row)
		
	def add(self, widget, col = None):
		if col is None: col = self.nb_col - 1
		
		if col == -1: i = 0
		else:
			for i in range(col, len(self.widgets), self.nb_col):
				if self.widgets[i] is None:
					self.widgets[i] = widget
					widget.added_into(self)
					return
				
		self.insert_col(self.nb_col)
		self.widgets[self.nb_col - 1] = widget
		widget.added_into(self)
		
	def remove(self, widget):
		i = self.widgets.index(widget)
		self.widgets[i] = None
		widget.added_into(None)
		col = i % self.nb_col
		for i in range(col, len(self.widgets), self.nb_col):
			if self.widgets[i]: break
		else: self.delete_col(col)			
		
class VTable(Table):
	def __init__(self, parent, nb_col = 1):
		Table.__init__(self, parent, nb_col, 0)
		
	def add(self, widget, row = None):
		if row is None: row = self.nb_row - 1

		if row == -1: i = 0
		else:
			for i in range(row * self.nb_col, (row + 1) * self.nb_col):
				if self.widgets[i] is None:
					self.widgets[i] = widget
					widget.added_into(self)
					return
				
		self.insert_row(self.nb_row)
		self.widgets[(self.nb_row - 1) * self.nb_col] = widget
		widget.added_into(self)
		
	def remove(self, widget):
		i = self.widgets.index(widget)
		self.widgets[i] = None
		widget.added_into(None)
		row = i // self.nb_col
		for i in range(row * self.nb_col, (row + 1) * self.nb_col):
			if self.widgets[i]: break
		else: self.delete_row(row)
		

class VList(VTable, HighlightableWidget, FocusableWidget):
	def __init__(self, parent, nb_col = 1):
		HighlightableWidget.__init__(self)
		FocusableWidget    .__init__(self)
		VTable             .__init__(self, parent, nb_col)
		self.value      = 0
		self.border_pad = 1
		
	def add(self, widget, row = None):
		if isinstance(widget, basestring): widget = Label(None, widget)
		VTable.add(self, widget, row)
		
	def render(self):
		if self.value != -1:
			y = self.y + self.row_pad * self.value
			if self.border_pad: y += self.row_pad
			for i in range(self.value): y += self.row_heights[i]
			STYLE.rectangle(self.x + 2, y - 2, self.x + self.width - 2, y + self.row_heights[self.value] + 2, self.highlight or self.focus)
		VTable.render(self)
		
	def set_focus(self, focus, from_side = -1):
		return FocusableWidget.set_focus(self, focus, from_side)
		
	def on_mouse_pressed(self, button, x, y):
		self.set_focus(1)
		widget = self.widget_at(x, y)
		if widget and widget.on_mouse_pressed(button, x, y): pass
		elif button == 1:
			wy = self.y
			if self.border_pad: wy += self.row_pad
			for row in range(self.nb_row):
				wy += self.row_heights[row] + self.row_pad
				if y <= wy:
					self.set_value(row)
					break
			else: self.set_value(-1)
			
	def on_key_pressed (self, key, mods, unicode_key = 0):
		if   key == sdlconst.K_DOWN:
			if self.value < self.nb_row - 1: self.set_value(self.value + 1); return 1
		elif key == sdlconst.K_UP:
			if self.value > 0              : self.set_value(self.value - 1); return 1
			
	def set_value(self, value):
		if value != self.value:
			self.value = value
			self.on_value_changed()
			
	def on_value_changed(self): pass
	
class HList(HTable, HighlightableWidget, FocusableWidget):
	def __init__(self, parent, nb_row = 1):
		HighlightableWidget.__init__(self)
		FocusableWidget    .__init__(self)
		HTable             .__init__(self, parent, nb_row)
		self.value      = 0
		self.border_pad = 1
		
	def add(self, widget, col = None):
		if isinstance(widget, basestring): widget = Label(None, widget)
		HTable.add(self, widget, col)
		
	def render(self):
		if self.value != -1:
			x = self.x + self.col_pad * self.value
			if self.border_pad: x += self.col_pad
			for i in range(self.value): x += self.col_widths[i]
			STYLE.rectangle(x - 2, self.y + 2, x + self.col_widths[self.value] + 2, self.y + self.height - 2, self.highlight or self.focus)
		HTable.render(self)
		
	def set_focus(self, focus, from_side = -1):
		return FocusableWidget.set_focus(self, focus, from_side)
		
	def on_mouse_pressed(self, button, x, y):
		self.set_focus(1)
		widget = self.widget_at(x, y)
		if widget and widget.on_mouse_pressed(button, x, y): pass
		elif button == 1:
			wx = self.x
			if self.border_pad: wx += self.col_pad
			for col in range(self.nb_col):
				wx += self.col_widths[col] + self.col_pad
				if x <= wx:
					self.set_value(col)
					break
			else: self.set_value(-1)
			
	def on_key_pressed (self, key, mods, unicode_key = 0):
		if   key == sdlconst.K_RIGHT:
			if self.value < self.nb_col - 1: self.set_value(self.value + 1); return 1
		elif key == sdlconst.K_LEFT:
			if self.value > 0              : self.set_value(self.value - 1); return 1
			
	def set_value(self, value):
		if value != self.value:
			self.value = value
			self.on_value_changed()
			
	def on_value_changed(self): pass
	
	
class Image(Widget):
	def __init__(self, parent = None, material = None):
		self.material = material
		self.tex_x1 = 0.0
		self.tex_y1 = 0.0
		self.tex_x2 = 1.0
		self.tex_y2 = 1.0
		Widget.__init__(self, parent)
		
	def render(self):
		if self.material:
			self.material.activate()
			if self.material.is_alpha(): opengl.glEnable(opengl.GL_BLEND)
			opengl.glBegin     (opengl.GL_QUADS)
			opengl.glTexCoord2f(self.tex_x1, self.tex_y1); opengl.glVertex2i(self.x             , self.y)
			opengl.glTexCoord2f(self.tex_x1, self.tex_y2); opengl.glVertex2i(self.x             , self.y + self.height)
			opengl.glTexCoord2f(self.tex_x2, self.tex_y2); opengl.glVertex2i(self.x + self.width, self.y + self.height)
			opengl.glTexCoord2f(self.tex_x2, self.tex_y1); opengl.glVertex2i(self.x + self.width, self.y)
			opengl.glEnd()
			soya.DEFAULT_MATERIAL.activate()
			if self.material.is_alpha(): opengl.glDisable(opengl.GL_BLEND)


class Label(Widget):
	def __init__(self, parent = None, text = u"", color = None, font = None):
		Widget.__init__(self, parent)
		self.color         = color or STYLE.text_colors[0]
		self.text          = text
		self._font         = font or STYLE.font
		self._changed      = -2
		self._display_list = soya.DisplayList()
		self.extra_height  = -1
		
	def __repr__(self): return """<%s text="%s">""" % (self.__class__.__name__, self._text.encode("latin"))
	
	def get_font (self): return self._font
	def set_font (self, x): self._font = x; self._changed = -2
	def get_text (self): return self._text
	def set_text (self, x): self._text = x; self._changed = -2; self.request_resize()
	font  = property(get_font, set_font)
	text  = property(get_text, set_text)
	
	def calc_size(self):
		text_size = self._font.get_print_size(self._text)
		self.ideal_width  = int(text_size[0])
		self.ideal_height = int(text_size[1])
		self.min_width  = self.ideal_width
		self.min_height = self.ideal_height
		
	def allocate(self, x, y, width, height):
		if (width != self.width) or (height != self.height): self._changed = -2
		Widget.allocate(self, x, y, width, height)
		
	def build_display_list(self):
		"""Label.build_display_list()

Really renders the text.

If you override this method, DO NOT SET self.text or self._text here !!!
It might call glyph tessellation that would be included in the display list !"""
		#self._font.draw_area(self._text, self.x, self.y, 0.0, self.width, self.height, 0)
		self._font.draw(self._text, 0.0, 0.0)
		
	def render(self):
		soya.DEFAULT_MATERIAL.activate()
		opengl.glColor4f(*self.color)
		opengl.glPushMatrix()
		opengl.glTranslatef(self.x, self.y, 0.0)
		if self._changed != self._font._pixels_height:
			self._font.create_glyphs(self._text)
			
			opengl.glNewList(self._display_list.id, opengl.GL_COMPILE_AND_EXECUTE)
			self.build_display_list()
			opengl.glEndList()
			self._changed = self._font._pixels_height
		else:
			opengl.glCallList(self._display_list.id)
		opengl.glPopMatrix()
		
class FPSLabel(Label):
	def __init__(self, parent = None, color = (1.0, 1.0, 1.0, 1.0)):
		Label.__init__(self, parent, u"FPS", color)
		self.fps = -1.0
		
	def calc_size(self):
		text_size = self._font.get_print_size(u"1000.0 FPS")
		self.ideal_width  = int(text_size[0])
		self.ideal_height = int(text_size[1])
		self.min_width    = self.ideal_width
		self.min_height   = self.ideal_height
		
	def allocate(self, x, y, width, height):
		if isinstance(self.parent, Layer):
			Widget.allocate(self, self.parent.x + self.parent.width - self.min_width - 5, self.parent.y + self.parent.height - self.min_height - 5, self.min_width, self.min_height)
		else:
			Widget.allocate(self, x, y, width, height)
			
	def begin_round(self):
		if soya.MAIN_LOOP:
			if self.fps != soya.MAIN_LOOP.fps:
				self.fps  = soya.MAIN_LOOP.fps
				self._text = u"%.1f FPS" % self.fps
				self._changed = -2
		else:
			if self.fps != -2.0:
				self.fps  = -2.0
				self._text = u"No main_loop"
				self._changed = -2
				
class Text(Widget):
	def __init__(self, parent = None, text = u"", color = None, font = None):
		Widget.__init__(self, parent)
		self.color         = color or STYLE.text_colors[0]
		self.text          = text
		self._font         = font or STYLE.font
		self._changed      = -2
		self._display_list = soya.DisplayList()
		self.min_width  = 300
		self._wrap_at_width = 1000000.0
		
	def __repr__(self): return """<%s text="%s">""" % (self.__class__.__name__, self._text.encode("latin"))
	
	def get_font (self): return self._font
	def set_font (self, x): self._font  = x; self._changed = -2
	def get_text (self): return self._text
	def set_text (self, x): self._text  = x; self._changed = -2; self.request_resize()
	font  = property(get_font, set_font)
	text  = property(get_text, set_text)

	def reset_size(self):
		self._wrap_at_width = 1000000.0
		
	def calc_size(self):
		max_line_width, total_height, wrapped_text = self._font.wordwrap(self._text, self._wrap_at_width)
		self.ideal_width  = int(max_line_width)
		self.ideal_height = int(total_height)
		self.min_height   = self.ideal_height
		
	def allocate(self, x, y, width, height):
		max_line_width, total_height, wrapped_text = self._font.wordwrap(self._text, width)
		if (height < total_height) and (width < self._wrap_at_width):
			self._wrap_at_width = width
			print "text wraps => restart calc_size !"
			raise CalcSizeRestart

		if (width != self.width) or (height != self.height): self._changed = -2
		Widget.allocate(self, x, y, width, height)
		
	def move(self, x, y):
		self.x = x
		self.y = y
		
	def build_display_list(self):
		self._font.draw_area(self._text, 0.0, 0.0, 0.0, self.width, self.height, 0)
		
	def render(self):
		soya.DEFAULT_MATERIAL.activate()
		opengl.glColor4f(*self.color)
		opengl.glPushMatrix()
		opengl.glTranslatef(self.x, self.y, 0.0)
		if self._changed != self._font._pixels_height:
			self._font.create_glyphs(self._text)
			
			opengl.glNewList(self._display_list.id, opengl.GL_COMPILE_AND_EXECUTE)
			self.build_display_list()
			opengl.glEndList()
			self._changed = self._font._pixels_height
		else:
			opengl.glCallList(self._display_list.id)
		opengl.glPopMatrix()


class Button(Label, HighlightableWidget, FocusableWidget):
	def __init__(self, parent = None, text = u"", on_clicked = None, color = None, font = None):
		HighlightableWidget.__init__(self)
		FocusableWidget    .__init__(self)
		Label.__init__(self, parent, text, color, font)
		if on_clicked: self.on_clicked = on_clicked
		self.extra_width = 1.0
		
	def calc_size(self):
		Label.calc_size(self)
		self.ideal_width  += 6
		self.ideal_height += 6
		self.min_width    += 6
		self.min_height   += 4
		
	def build_display_list(self):
		self._font.draw(self._text, (self.width - self.ideal_width) // 2, 3.0)
		
	def render(self):
		STYLE.rectangle(self.x, self.y, self.x + self.width, self.y + self.height, self.highlight or self.focus)
		Label.render(self)
		
	def on_clicked(self): pass
	
	def on_mouse_released(self, button, x, y):
		if button == 1: self.on_clicked()
		return 1
	
	def on_key_pressed (self, key, mods, unicode_key = 0):
		if (key == sdlconst.K_SPACE) or (key == sdlconst.K_RETURN) or (key == sdlconst.K_KP_ENTER):
			self.on_clicked()
			return 1
		
	def on_highlight(self, highlight):
		HighlightableWidget.on_highlight(self, highlight)
		if highlight: self.color = STYLE.text_colors[1]
		else:         self.color = STYLE.text_colors[0]
		
class CancelButton(Button):
	def __init__(self, parent = None, text = u"Cancel", on_clicked = None, color = None, font = None):
		Button.__init__(self, parent, text, on_clicked, color, font)
		
	def on_clicked(self): self.get_window().close()
	
class ValidateButton(Button):
	def __init__(self, parent = None, text = u"Ok", on_clicked = None, color = None, font = None):
		Button.__init__(self, parent, text, on_clicked, color, font)

	
class Input(Label, HighlightableWidget, FocusableWidget):
	def __init__(self, parent = None, text = u"", color = None, font = None):
		self.cursor_pos = len(text)
		HighlightableWidget.__init__(self)
		FocusableWidget    .__init__(self)
		Label.__init__(self, parent, text, color, font)
		soya.set_use_unicode(1)
		
	def calc_size(self):
		Label.calc_size(self)
		self.ideal_width  += 6
		self.ideal_height += 6
		self.min_width    += 6
		self.min_height   += 5
		
	def build_display_list(self):
		self._font.draw(self._text, 3.0, 3.0)
		
	def render(self):
		STYLE.rectangle(self.x, self.y, self.x + self.width, self.y + self.height, self.highlight or self.focus)
		Label.render(self)
		if self.highlight or self.focus:
			cursor_x = self.x + 3 + int(self._font.get_print_size(self._text[:self.cursor_pos])[0])
			opengl.glColor4f(*STYLE.text_colors[self.highlight])
			opengl.glBegin(opengl.GL_LINES)
			opengl.glVertex2i(cursor_x, self.y + 3)
			opengl.glVertex2i(cursor_x, self.y + self.height - 3)
			opengl.glEnd()
			
	def on_text_changed(self): pass
	def on_key_pressed (self, key, mods, unicode_key = 0):
		if   key == sdlconst.K_LEFT  : self.cursor_pos = max(self.cursor_pos - 1, 0)              ; return 1
		elif key == sdlconst.K_RIGHT : self.cursor_pos = min(self.cursor_pos + 1, len(self._text)); return 1
		elif key == sdlconst.K_HOME  : self.cursor_pos = 0                                        ; return 1
		elif key == sdlconst.K_END   : self.cursor_pos = len(self._text)                          ; return 1
		elif key == sdlconst.K_DELETE:
			self.text = self._text[:self.cursor_pos] + self._text[self.cursor_pos + 1:]
			self.on_text_changed()
			return 1
		elif key == sdlconst.K_BACKSPACE:
			self.text = self._text[:self.cursor_pos - 1] + self._text[self.cursor_pos:]
			self.cursor_pos = max(self.cursor_pos - 1, 0)
			self.on_text_changed()
			return 1
		elif key == sdlconst.K_TAB   : return 0 # Not a valid character, but has a valid unicode!
		elif key == sdlconst.K_ESCAPE: return 0 # Not a valid character, but has a valid unicode!
		elif(key == sdlconst.K_RETURN) or (key == sdlconst.K_KP_ENTER): return 0 # Not a valid character, but has a valid unicode!
		elif unicode_key:
			self.text = self._text[:self.cursor_pos] + unichr(unicode_key) + self._text[self.cursor_pos:]
			self.cursor_pos += 1
			self.on_text_changed()
			return 1
		
	def on_mouse_pressed(self, button, x, y):
		super(Input, self).on_mouse_pressed(button, x, y)
		x -= self.x + 3.0
		i = 0
		for char in self._text:
			char_width = self._font.get_print_size(char)[0]
			if x < char_width // 2: self.cursor_pos = i; break
			i += 1
			x -= char_width
			if x < 0              : self.cursor_pos = i; break
		self.cursor_pos = i
		return 1
	
	def on_mouse_released(self, button, x, y): return 1 # Make the widget "opaque" : don't give the event to another one
	
	def on_highlight(self, highlight):
		if highlight: self.color = STYLE.text_colors[1]
		else:         self.color = STYLE.text_colors[0]
		
		
class CheckBox(Label, HighlightableWidget, FocusableWidget):
	base_color_index = 0
	def __init__(self, parent = None, text = u"", value = 0, color = None, font = None):
		self.value     = value
		self.focus     = 0
		HighlightableWidget.__init__(self)
		FocusableWidget    .__init__(self)
		Label.__init__(self, parent, text, color, font)
		
		self.check_size = int(STYLE.char_height * 0.9)
		
	def calc_size(self):
		text_size = self._font.get_print_size(self._text)
		self.text_width  = int(text_size[0])
		self.text_height = int(text_size[1])
		if self._text: self.ideal_width  = int(self.text_width + self.check_size * 1.1)
		else:          self.ideal_width  = self.check_size
		self.ideal_height = max(self.text_height, self.check_size)
		self.min_width  = self.ideal_width
		self.min_height = self.ideal_height
		
	def build_display_list(self):
		self._font.draw(self._text, self.check_size * 1.1, 0.0)
		
	def render(self):
		Label.render(self)
		x1 = self.x
		y1 = self.y
		x2 = x1 + self.check_size
		y2 = y1 + self.check_size
		STYLE.rectangle(x1, y1, x2, y2, self.base_color_index + (self.highlight or self.focus))
		if self.value:
			opengl.glLineWidth(2.0)
			opengl.glColor4f(*STYLE.line_colors[self.base_color_index + (self.highlight or self.focus)])
			opengl.glBegin   (opengl.GL_LINES)
			opengl.glVertex2i(x1, y1)
			opengl.glVertex2i(x2, y2)
			opengl.glVertex2i(x2, y1)
			opengl.glVertex2i(x1, y2)
			opengl.glEnd()
			opengl.glLineWidth(1.0)
			
	def on_mouse_released(self, button, x, y):
		if button == 1:
			self.set_value(not self.value)
			
	def on_key_pressed (self, key, mods, unicode_key = 0):
		if (key == sdlconst.K_SPACE) or (key == sdlconst.K_RETURN) or (key == sdlconst.K_KP_ENTER):
			self.set_value(not self.value)
			return 1
		
	def set_value(self, value):
		self.value = value
		self.on_value_changed()
		
	def on_value_changed(self): pass
	
	def on_highlight(self, highlight):
		if highlight: self.color = STYLE.text_colors[1]
		else:         self.color = STYLE.text_colors[0]
	
		
class WindowCloseButton(CheckBox):
	base_color_index = 2
	def set_value(self, value):
		CheckBox.set_value(self, value)
		if not value: self.parent.parent.close()
		
class Window(Table, HighlightableWidget):
	def __init__(self, parent = None, title = u"Window", closable = 1):
		HighlightableWidget.__init__(self)
		Table.__init__(self, parent, 1, 2)
		self.border_pad = 1
		if isinstance(title, Widget): title_widget = title; self.add(title)
		else:                         title_widget = Label(None, title, color = STYLE.text_colors[2]); title_widget.extra_width = 1.0
		if closable:
			title_bar = Table(self, 2, 1)
			title_bar.col_pad = 15
			title_bar.add(title_widget)
			self.close_button = WindowCloseButton(title_bar, u"", 1)
		else:
			self.add(title_widget)
			self.close_button = None
		self.max_width_percent   = 0.8
		self.max_height_percent  = 0.8
		self.last_focused_widget = None
		self.x = -1
		self.y = -1
		
	def on_key_pressed (self, key, mods, unicode_key = 0):
		if    key == sdlconst.K_ESCAPE:
			if self.close_button:
				self.close()
				return 1
			for widget in self.recursive():
				if isinstance(widget, CancelButton):
					widget.on_clicked()
					return 1
				
		elif (key == sdlconst.K_SPACE) or (key == sdlconst.K_RETURN) or (key == sdlconst.K_KP_ENTER):
			for widget in self.recursive():
				if isinstance(widget, ValidateButton):
					widget.on_clicked()
					return 1
				
	def close(self):
		if self.parent:
			parent = self.parent
			self.parent.remove(self)
			self.on_closed()
			if FOCUSED_WIDGET.get_window() is self:
				widget = parent.widgets[-1]
				if   isinstance(widget, Window):
					if widget.last_focused_widget: widget.last_focused_widget.set_focus(1)
				elif isinstance(widget, FocusableWidget) or isinstance(widget, Table):
					widget.set_focus(1)
					
	def on_closed(self): pass
	
	def calc_size(self):
		Table.calc_size(self)
		self.ideal_width  += 2 * self.border_pad
		self.ideal_height += 2 * self.border_pad
		self.min_width    += 2 * self.border_pad
		self.min_height   += 2 * self.border_pad
		self.extra_width  = -1
		self.extra_height = -1
		
	def allocate(self, x, y, width, height):
		w_width  = min(width , self.ideal_width , int(self.max_width_percent  * self.parent.width ))
		w_height = min(height, self.ideal_height, int(self.max_height_percent * self.parent.height))
		
		if self.x == -1: self.x = (self.parent.width  - w_width ) // 2
		if self.y == -1: self.y = (self.parent.height - w_height) // 2
		
		if   self.x < self.parent.x                                   : self.x = self.parent.x
		elif self.x > self.parent.x + self.parent.width  - w_width : self.x = self.parent.x + self.parent.width  - w_width
		if   self.y < self.parent.y                                   : self.y = self.parent.y
		elif self.y > self.parent.y + self.parent.height - w_height: self.y = self.parent.y + self.parent.height - w_height

		Table.allocate(self, self.x, self.y, w_width, w_height)
		
		if self.last_focused_widget is None:
			if isinstance(self.widgets[1], Group): widgets = self.widgets[1].recursive()
			else:                                  widgets = [self.widgets[1]]
			for widget in widgets:
				if isinstance(widget, FocusableWidget):
					widget.set_focus(1)
					break
			else:
				self.close_button.set_focus(1)
				
	def move(self, x, y):
		if   x < self.parent.x                                   : x = self.parent.x
		elif x > self.parent.x + self.parent.width  - self.width : x = self.parent.x + self.parent.width  - self.width
		if   y < self.parent.y                                   : y = self.parent.y
		elif y > self.parent.y + self.parent.height - self.height: y = self.parent.y + self.parent.height - self.height
		Table.move(self, x, y)
		
	def render(self):
		if self.visible:
			title_y = self.y + self.widgets[0].height + int(1.3 * self.row_pad)
			STYLE.rectangle(self.x, self.y, self.x + self.width, self.y + self.height, 4)
			STYLE.rectangle(self.x, self.y, self.x + self.width, title_y, 2 + self.highlight)
			Group.render(self)
			
	def on_mouse_pressed(self, button, x, y):
		if isinstance(self.parent, Layer):
			self.parent.set_on_top(self)
			if   self.last_focused_widget: self.last_focused_widget.set_focus(1)
			elif FOCUSED_WIDGET: FOCUSED_WIDGET.set_focus(0)
			
		if not self is MOUSE_GRABBER_WIDGET:
			r = Table.on_mouse_pressed(self, button, x, y)
			if r: return r
			
		if (button == 1) and (y < self.y + self.widgets[0].height + int(1.3 * self.row_pad)):
			self.set_grab_mouse(1)
		return 1
	
	def on_mouse_released(self, button, x, y):
		if not self is MOUSE_GRABBER_WIDGET:
			r = Table.on_mouse_released(self, button, x, y)
			if r: return r
			
		if button == 1: self.set_grab_mouse(0)
		
		return 1
	
	def on_mouse_move(self, x, y, x_relative, y_relative, state):
		if not self is MOUSE_GRABBER_WIDGET:
			widget = self.widget_at(x, y)
			if widget and widget.on_mouse_move(x, y, x_relative, y_relative, state): return 1
			
		if y <= self.y + self.widgets[0].height + int(1.3 * self.row_pad):
			HighlightableWidget.on_mouse_move(self, x, y, x_relative, y_relative, state)
			
		if state == 1:
			self.move(self.x + x_relative, self.y + y_relative)
		return 1
	
		

class ScrollBar(HighlightableWidget, FocusableWidget):
	def __init__(self, parent = None, min = 0, max = 100, value = None, page_size = 0.0, step_size = 1.0):
		self.min   = min
		self.max   = max
		if value is None: self.value = min
		else:             self.value = value
		self.page_size      = page_size
		self.step_size      = step_size
		self.bar_size       = int(0.9 * STYLE.char_height)
		self.highlight_part = 0
		self.changing       = 0.0
		self.changing_round = 0
		HighlightableWidget.__init__(self)
		FocusableWidget    .__init__(self)
		Widget             .__init__(self, parent)
		
	def __repr__(self): return """<%s min=%s max=%s value=%s page_size=%s>""" % (self.__class__.__name__, self.min, self.max, self.value, self.page_size)
	
	def set_value(self, value):
		if   value < self.min                 : self.value = self.min
		elif value > self.max - self.page_size: self.value = self.max - self.page_size
		else:                                   self.value = value
		self.update_bar()
		self.on_value_changed()

	def on_value_changed(self): pass
		
	def set_range(self, min, max, value, page_size, step_size):
		self.min       = min
		self.max       = max
		self.page_size = page_size
		self.step_size = step_size
		self.set_value(value)
		
	def allocate(self, x, y, width, height):
		Widget.allocate(self, x, y, width, height)
		self.update_bar()
		
	def on_highlight(self, highlight):
		if not highlight:
			self.highlight_part = 0
			
	def on_mouse_released(self, button, x, y):
		self.set_grab_mouse(0)
		self.changing = 0.0

	def begin_round(self):
		if self.changing:
			self.changing_round += 1
			if self.changing_round == 4:
				self.set_value(self.value + self.changing)
				self.changing_round = 0
				
	def on_key_released(self, key, mods): self.changing = 0.0
	
			
class HScrollBar(ScrollBar):
	def __init__(self, parent = None, min = 0, max = 100, value = None, page_size = 0.0, step_size = 1.0):
		ScrollBar.__init__(self, parent, min, max, value, page_size)
		self.ideal_width  = self.bar_size * 6
		self.ideal_height = self.bar_size
		self.min_width    = self.bar_size * 4
		self.min_height   = self.bar_size
		self.extra_width  = 1.0
		self.extra_height = -1

	def update_bar(self):
		self.page_width = int((self.width - 2 * self.bar_size) * self.page_size / (self.max - self.min))
		if self.page_width < self.bar_size:
			self.additional_page_width = self.bar_size - self.page_width
			self.page_x = int(self.x + self.bar_size + (self.width - 2 * self.bar_size - self.additional_page_width) * self.value / (self.max - self.min))
			self.page_width = self.bar_size
		else:
			self.additional_page_width = 0
			self.page_x = int(self.x + self.bar_size + (self.width - 2 * self.bar_size) * self.value / (self.max - self.min))
			
	def render(self):
		STYLE.triangle(0, self.x, self.y, self.x + self.bar_size - 2, self.y + self.bar_size, self.highlight_part == 1)
		STYLE.triangle(1, self.x + self.width - self.bar_size + 2, self.y, self.x + self.width, self.y + self.bar_size, self.highlight_part == 4)
		STYLE.rectangle(self.page_x, self.y, self.page_x + self.page_width, self.y + self.bar_size, (self.highlight_part == 2) or self.focus)
		
	def set_value_pixel(self, x):
		self.set_value(self.min + float(x - (self.page_width) / 2.0 - self.x - self.bar_size) / (self.width - 2 * self.bar_size - self.additional_page_width) * (self.max - self.min))
		
	def on_mouse_move(self, x, y, x_relative, y_relative, state):
		HighlightableWidget.on_mouse_move(self, x, y, x_relative, y_relative, state)
		if   x < self.x + self.bar_size                     : self.highlight_part = 1
		elif x > self.x + self.width - self.bar_size        : self.highlight_part = 4
		else:                                                 self.highlight_part = 2
		if  (state == 1) and not self.changing:
			if self.x + self.bar_size < x < self.x + self.width - self.bar_size:
				self.set_value_pixel(self.page_x + (self.page_width) / 2.0 + x_relative)
				
		elif state == 2:
			if self.x + self.bar_size < x < self.x + self.width - self.bar_size: self.set_value_pixel(x)
		return 1
	
	def on_mouse_pressed(self, button, x, y):
		ScrollBar.on_mouse_pressed(self, button, x, y)
		self.changing_round = 0
		if   button == 1:
			if   x < self.x + self.bar_size                     : self.changing = -self.step_size
			elif x > self.x + self.width - self.bar_size        : self.changing =  self.step_size
			elif x < self.page_x                                : self.changing = -max(self.page_size, self.step_size)
			elif x > self.page_x + self.page_width              : self.changing =  max(self.page_size, self.step_size)
			self.set_value(self.value + self.changing)
			self.set_grab_mouse(1)
		elif button == 2:
			if self.x + self.bar_size < x < self.x + self.width - self.bar_size:
				self.set_value_pixel(x)
				self.set_grab_mouse(1)
		return 1
	
	def on_key_pressed(self, key, mods, unicode_key = 0):
		if   key == sdlconst.K_LEFT :
			if self.value == self.min: return 0
			self.changing_round = -10
			self.changing = -self.step_size
			self.set_value(self.value + self.changing)
			return 1
		elif key == sdlconst.K_RIGHT:
			if self.value + self.page_size == self.max: return 0
			self.changing_round = -10
			self.changing =  self.step_size
			self.set_value(self.value + self.changing)
			return 1
			
	
class VScrollBar(ScrollBar):
	def __init__(self, parent = None, min = 0, max = 100, value = None, page_size = 0.0, step_size = 1.0):
		ScrollBar.__init__(self, parent, min, max, value, page_size)
		self.ideal_width  = self.bar_size
		self.ideal_height = self.bar_size * 4
		self.min_width    = self.bar_size
		self.min_height   = self.bar_size * 3
		self.extra_width  = -1
		self.extra_height = 1.0
		
	def update_bar(self):
		self.page_height = int((self.height - 2 * self.bar_size) * self.page_size / (self.max - self.min))
		if self.page_height < self.bar_size:
			self.additional_page_height = self.bar_size - self.page_height
			self.page_y = int(self.y + self.bar_size + (self.height - 2 * self.bar_size - self.additional_page_height) * self.value / (self.max - self.min))
			self.page_height = self.bar_size
		else:
			self.additional_page_height = 0
			self.page_y = int(self.y + self.bar_size + (self.height - 2 * self.bar_size) * self.value / (self.max - self.min))
			
	def render(self):
		STYLE.triangle(2, self.x, self.y, self.x + self.bar_size, self.y + self.bar_size - 2, self.highlight_part == 1)
		STYLE.triangle(3, self.x, self.y + self.height - self.bar_size + 2, self.x + self.bar_size, self.y + self.height, self.highlight_part == 4)
		STYLE.rectangle(self.x, self.page_y, self.x + self.bar_size, self.page_y + self.page_height, (self.highlight_part == 2 or self.focus))
		
	def set_value_pixel(self, y):
		self.set_value(self.min + float(y - self.page_height / 2.0 - self.y - self.bar_size) / (self.height - 2 * self.bar_size - self.additional_page_height) * (self.max - self.min))
		
	def on_mouse_move(self, x, y, x_relative, y_relative, state):
		HighlightableWidget.on_mouse_move(self, x, y, x_relative, y_relative, state)
		if   y < self.y + self.bar_size                      : self.highlight_part = 1
		elif y > self.y + self.height - self.bar_size        : self.highlight_part = 4
		else:                                                  self.highlight_part = 2
		if  (state == 1) and not self.changing:
			if self.y + self.bar_size < y < self.y + self.height - self.bar_size:
				self.set_value_pixel(self.page_y + self.page_height / 2.0 + y_relative)
				
		elif state == 2:
			if self.y + self.bar_size < y < self.y + self.height - self.bar_size: self.set_value_pixel(y)
		return 1
	
	def on_mouse_pressed(self, button, x, y):
		ScrollBar.on_mouse_pressed(self, button, x, y)
		self.changing_round = 0
		if   button == 1:
			if   y < self.y + self.bar_size              : self.changing = -self.step_size
			elif y > self.y + self.height - self.bar_size: self.changing =  self.step_size
			elif y < self.page_y                         : self.changing = -max(self.page_size, self.step_size)
			elif y > self.page_y + self.page_height      : self.changing =  max(self.page_size, self.step_size)
			self.set_value(self.value + self.changing)
			self.set_grab_mouse(1)
		elif button == 2:
			if self.y + self.bar_size < y < self.y + self.height - self.bar_size:
				self.set_value_pixel(y)
				self.set_grab_mouse(1)
		elif button == 4: self.set_value(self.value - self.step_size)
		elif button == 5: self.set_value(self.value + self.step_size)
		return 1
	
	def on_key_pressed(self, key, mods, unicode_key = 0):
		if   key == sdlconst.K_UP  :
			if self.value == self.min: return 0
			self.changing_round = -10
			self.changing = -self.step_size
			self.set_value(self.value + self.changing)
			return 1
		elif key == sdlconst.K_DOWN:
			if self.value + self.page_size == self.max: return 0
			self.changing_round = -10
			self.changing =  self.step_size
			self.set_value(self.value + self.changing)
			return 1
		
		
class _ScrollPaneHScrollBar(HScrollBar):
	def on_value_changed(self):
		self.parent.update_viewport()
		
class _ScrollPaneVScrollBar(VScrollBar):
	def on_value_changed(self):
		self.parent.update_viewport()
		
class ScrollPane(Table):
	def __init__(self, parent = None):
		Table.__init__(self, parent, 2, 2)
		self.hscroll = _ScrollPaneHScrollBar()
		self.vscroll = _ScrollPaneVScrollBar()
		self.hscroll.calc_size()
		self.vscroll.calc_size()
		self.min_width  = 200
		self.min_height = 200
		self.scroll_x0 = 0
		self.scroll_y0 = 0
		
	def reset_size(self):
		Table.reset_size(self)
		if self.hscroll.parent:
			self.widgets[2] = None
			self.hscroll.added_into(None)
		
		if self.vscroll.parent:
			self.widgets[1] = None
			self.vscroll.added_into(None)
			
	def calc_size(self):
		min_width  = self.min_width
		min_height = self.min_height
		
		Table.calc_size(self, calc_min = 1)
		if self.border_pad: nb_pad = 3
		else:               nb_pad = 1

		self.inner_min_width  = self.min_width
		self.inner_min_height = self.min_height
		self.min_width  = min_width
		self.min_height = min_height
		
		self.min_col_widths [0] = self.min_width  - self.col_pad * nb_pad - self.vscroll.min_width
		self.min_row_heights[0] = self.min_height - self.row_pad * nb_pad - self.hscroll.min_height
		
	def allocate(self, x, y, width, height):
		if (self.hscroll.parent is None) and (width  < self.inner_min_width ):
			self.set_widget_at(self.hscroll, 0, 1)
			raise CalcSizeRestart
		if (self.vscroll.parent is None) and (height < self.inner_min_height):
			self.set_widget_at(self.vscroll, 1, 0)
			raise CalcSizeRestart
		
		Table.allocate(self, x, y, width, height)
		
		self.scroll_x0 = self.widgets[0].x
		self.scroll_y0 = self.widgets[0].y
		if self.hscroll.parent: self.hscroll.set_range(0, max(self.widgets[0].min_width , self.col_widths [0]), self.hscroll.value, self.col_widths [0], 50.0)
		else:                   self.hscroll.value = 0.0; self.hscroll.page_size = self.col_widths [0]; self.hscroll.max = max(self.widgets[0].min_width , self.col_widths [0])
		if self.vscroll.parent: self.vscroll.set_range(0, max(self.widgets[0].min_height, self.row_heights[0]), self.vscroll.value, self.row_heights[0], 50.0)
		else:                   self.vscroll.value = 0.0; self.vscroll.page_size = self.row_heights[0]; self.vscroll.max = max(self.widgets[0].min_height, self.row_heights[0])
		
		self.widgets[0].allocate(
			int(self.scroll_x0 - self.hscroll.value),
			int(self.scroll_y0 - self.vscroll.value),
			max(self.widgets[0].min_width , self.col_widths [0]),
			max(self.widgets[0].min_height, self.row_heights[0]),
			)
		
	def move(self, x, y):
		self.scroll_x0 += x - self.x
		self.scroll_y0 += y - self.y
		Table.move(self, x, y)
		
	def update_viewport(self):
		self.widgets[0].move(
			int(self.scroll_x0 - self.hscroll.value),
			int(self.scroll_y0 - self.vscroll.value),
			)
		
	def render(self):
		if self.visible:
			opengl.glMatrixMode(opengl.GL_PROJECTION)
			opengl.glPushAttrib(opengl.GL_VIEWPORT)
			opengl.glPushMatrix()
			opengl.glLoadIdentity()
			
			opengl.glViewport(self.scroll_x0,
												soya.get_screen_height() - (self.scroll_y0 + self.vscroll.page_size),
												self.hscroll.page_size,
												self.vscroll.page_size)
			
			opengl.glOrtho(self.scroll_x0,
										 self.scroll_x0 + self.hscroll.page_size,
										 self.scroll_y0 + self.vscroll.page_size,
										 self.scroll_y0, -1.0, 1.0)
			
# 			soya.DEFAULT_MATERIAL.activate()
# 			opengl.glColor4f(0.0, 1.0, 1.0, 1.0)
# 			opengl.glBegin(opengl.GL_QUADS)
# 			opengl.glVertex2i(0, 1000)
# 			opengl.glVertex2i(1000, 1000)
# 			opengl.glVertex2i(1000, 0)
# 			opengl.glVertex2i(0, 0)
# 			opengl.glEnd()
			
			self.widgets[0].render()

			opengl.glPopMatrix()
			opengl.glPopAttrib()
			opengl.glMatrixMode(opengl.GL_MODELVIEW)
			
			for widget in self.widgets[1:]:
				if widget: widget.render()
				
	def on_mouse_pressed(self, button, x, y):
		r = Table.on_mouse_pressed(self, button, x, y)
		if r: return r
		
		if self.vscroll.parent:
			if   button == 4: self.vscroll.set_value(self.vscroll.value - self.vscroll.step_size); return 1
			elif button == 5: self.vscroll.set_value(self.vscroll.value + self.vscroll.step_size); return 1
		

class ProgressBar(Widget):
	def __init__(self, parent = None, value = 0.0):
		self.value = value
		Widget.__init__(self, parent)
		self.extra_width = 1.0
		self.min_height  = self.ideal_height = STYLE.char_height
		self.min_width   = 3 * STYLE.char_height
		self.ideal_width = 5 * STYLE.char_height

	def render(self):
		STYLE.rectangle(self.x, self.y, self.x + int(self.value * self.width), self.y + self.height)


class CameraViewport(Widget):
	def __init__(self, parent, camera = None):
		Widget.__init__(self, parent)
		self.camera = camera
		self.extra_width  = 1.0
		self.extra_height = 1.0
		self.ideal_width  = 320
		self.ideal_height = 200

	def set_camera(self, camera):
		self.camera = camera
		if self.camera: self.camera.resize(self.x, self.y, self.width, self.height)
		
	def allocate(self, x, y, width, height):
		Widget.allocate(self, x, y, width, height)
		if self.camera:
			self.camera.resize(self.x, self.y, self.width, self.height)
			
	def render(self):
		if self.camera:
			self.camera.render()