/usr/share/pyshared/freevo/gui/RegionScroller.py is in python-freevo 1.9.2b2-4.2.
This file is owned by root:root, with mode 0o644.
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# -----------------------------------------------------------------------
# RegionScroller.py - A class that will scroll another surface.
# -----------------------------------------------------------------------
# $Id: RegionScroller.py 11905 2011-11-14 21:54:46Z adam $
#
# Notes:
# Todo:
#
# -----------------------------------------------------------------------
# Freevo - A Home Theater PC framework
# Copyright (C) 2003 Krister Lagerstrom, et al.
# Please see the file freevo/Docs/CREDITS for a complete list of authors.
#
# 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 MER-
# CHANTABILITY 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 logging
logger = logging.getLogger("freevo.gui.RegionScroller")
import config
from event import *
from GUIObject import *
from Container import *
from Scrollbar import *
from Color import *
from Border import *
class RegionScroller(Container):
"""
left x coordinate. Integer
top y coordinate. Integer
width Integer
height Integer
text Letter to hold.
bg_color Background color (Color)
fg_color Foreground color (Color)
border Border
bd_color Border color (Color)
bd_width Border width Integer
show_h_scrollbar Integer
show_v_scrollbar Integer
"""
def __init__(self, region_surface=None, left=None, top=None, width=300,
height=160, bg_color=None, fg_color=None, border=None,
bd_color=None, bd_width=None, show_h_scrollbar=None,
show_v_scrollbar=None):
self.show_h_scrollbar = show_h_scrollbar
self.show_v_scrollbar = show_v_scrollbar
Container.__init__(self, 'widget', left, top, width, height, bg_color,
fg_color, border=border, bd_color=bd_color,
bd_width=bd_width)
self.internal_h_align = Align.NONE
self.internal_v_align = Align.NONE
if self.show_h_scrollbar != 0 and not self.show_h_scrollbar:
self.show_h_scrollbar = 1
if self.show_v_scrollbar != 0 and not self.show_v_scrollbar:
self.show_v_scrollbar = 1
self.set_surface(region_surface)
self.x_scroll_interval = 25
self.y_scroll_interval = 25
self.h_margin = 2
self.v_margin = 2
self.v_scrollbar = Scrollbar(self, 'vertical')
self.add_child(self.v_scrollbar)
self.h_scrollbar = Scrollbar(self, 'horizontal')
self.add_child(self.h_scrollbar)
self.filler = self.osd.Surface((self.v_scrollbar.thickness,
self.h_scrollbar.thickness), 0, 32)
filler_c = Color((0,0,0,255))
fc_c = filler_c.get_color_sdl()
fc_a = filler_c.get_alpha()
self.filler.fill(fc_c)
self.filler.set_alpha(fc_a)
# if self.show_v_scrollbar:
# if self.v_scrollbar: self.v_scrollbar.calculate_position()
# if self.show_h_scrollbar:
# if self.h_scrollbar: self.h_scrollbar.calculate_position()
def get_view_percent(self, orientation):
if orientation == 'vertical':
a = self.v_y * 100 / self.s_h
b = self.height * 100 / self.s_h
c = (self.s_h - (self.v_y + self.height)) * 100 / self.s_h
else:
a = self.v_x * 100 / self.s_w
b = self.width * 100 / self.s_w
c = (self.s_w - (self.v_x + self.width)) * 100 / self.s_w
rem = 100 - a - b - c
b = b + rem
return (a, b, c)
def print_stuff(self):
print ' self.s_w="%s"' % self.s_w
print ' self.s_h="%s"' % self.s_h
print ' self.v_x="%s"' % self.v_x
print ' self.v_y="%s"' % self.v_y
print ' self.width="%s"' % self.width
print ' self.height="%s"' % self.height
print ' self.top="%s"' % self.top
print ' self.left="%s"' % self.left
print ' self.max_x_offset="%s"' % self.max_x_offset
print ' self.max_y_offset="%s"' % self.max_y_offset
def scroll(self, direction):
_debug_('scrolldir: direction="%s"' % direction, 2)
if direction == INPUT_RIGHT:
new_x = self.v_x + self.x_scroll_interval
if new_x > self.max_x_offset:
new_x = self.max_x_offset
self.v_x = new_x
elif direction == INPUT_LEFT:
new_x = self.v_x - self.x_scroll_interval
if new_x < 0:
new_x = 0
self.v_x = new_x
elif direction == INPUT_DOWN:
new_y = self.v_y + self.y_scroll_interval
if new_y > self.max_y_offset:
new_y = self.max_y_offset
self.v_y = new_y
elif direction == INPUT_UP:
new_y = self.v_y - self.y_scroll_interval
if new_y < 0:
new_y = 0
self.v_y = new_y
if config.DEBUG > 1:
self.print_stuff()
def set_surface(self, surface):
self.region_surface = surface
(self.s_w, self.s_h) = self.region_surface_rect \
= self.region_surface.get_rect()[2:4]
self.v_x = 0
self.v_y = 0
self.max_x_offset = self.s_w - self.width
self.max_y_offset = self.s_h - self.height
def get_location(self):
return (self.v_x, self.v_y)
def _draw(self, surface=None):
"""
The actual internal draw function.
"""
if not self.width or not self.height or not self.region_surface:
raise TypeError, 'Not all needed variables set.'
self.set_position(self.left,self.top)
(x, y) = self.get_location()
self.surface = self.osd.Surface(self.get_size(), 0, 32)
# self.surface = self.region_surface.subsurface(x, y, self.width, self.height)
# self.surface.fill((255,255,255,255))
# self.surface.set_alpha(255)
self.surface.blit(self.region_surface, (0, 0), (x, y, self.width, self.height))
if self.show_v_scrollbar and self.v_scrollbar:
self.v_scrollbar.draw()
if self.show_h_scrollbar and self.h_scrollbar:
self.h_scrollbar.draw()
if self.show_v_scrollbar and self.show_h_scrollbar:
self.surface.blit(self.filler,
(self.width-self.v_scrollbar.thickness,
self.height-self.h_scrollbar.thickness))
if self.border:
self.border.draw()
if surface:
surface.blit(self.surface, self.get_position())
else:
self.blit_parent()
def set_position(self, left, top):
"""
Overrides the original in GUIBorder to update the border as well.
"""
GUIObject.set_position(self, left, top)
if isinstance(self.border, Border):
_debug_("updating borders set_postion as well", 2)
self.border.set_position(left, top)
# if self.show_h_scrollbar:
# if self.h_scrollbar: self.h_scrollbar.calculate_position()
# if self.show_v_scrollbar:
# if self.v_scrollbar: self.v_scrollbar.calculate_position()
def eventhandler(self, event):
if event in (INPUT_UP, INPUT_DOWN, INPUT_LEFT, INPUT_RIGHT ):
self.scroll(event)
self.parent.draw(update=True)
return
else:
return self.parent.eventhandler(event)
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