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# Copyright 2004-2013 Tom Rothamel <pytom@bishoujo.us>
#
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation files
# (the "Software"), to deal in the Software without restriction,
# including without limitation the rights to use, copy, modify, merge,
# publish, distribute, sublicense, and/or sell copies of the Software,
# and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
# This module wraps the pygame surface class (and associated functions). It
# ensures that returned surfaces have a 2px border around them.
import sys
import pygame
import renpy.display
# Sample surfaces, with and without alpha.
sample_alpha = None
sample_noalpha = None
def set_rgba_masks():
"""
This rebuilds the sample surfaces, to ones that use the given
masks.
"""
# Annoyingly, the value for the big mask seems to vary from
# platform to platform. So we read it out of a surface.
global sample_alpha
global sample_noalpha
# Create a sample surface.
s = pygame.Surface((10, 10), 0, 32)
sample_alpha = s.convert_alpha()
# Sort the components by absolute value.
masks = list(sample_alpha.get_masks())
masks.sort(key=lambda a : abs(a))
# Choose the masks.
if sys.byteorder == 'big':
masks = ( masks[3], masks[2], masks[1], masks[0] )
else:
masks = ( masks[0], masks[1], masks[2], masks[3] )
# Create the sample surface.
sample_alpha = pygame.Surface((10, 10), 0, 32, masks)
sample_noalpha = pygame.Surface((10, 10), 0, 32, masks[:3] + (0,))
class Surface(pygame.Surface):
"""
This allows us to wrap around pygame's surface, to change
its mode, as necessary.
"""
opaque = False
def is_opaque(self):
return self.opaque
def convert_alpha(self, surface=None):
return copy_surface_unscaled(self, True)
def convert(self, surface=None):
return copy_surface(self, False)
def copy(self):
return copy_surface(self, self)
def subsurface(self, rect):
rv = pygame.Surface.subsurface(self, rect)
return rv
def surface(xxx_todo_changeme, alpha):
"""
Constructs a new surface. The allocated surface is actually a subsurface
of a surface that has a 2 pixel border in all directions.
`alpha` - True if the new surface should have an alpha channel.
"""
(width, height) = xxx_todo_changeme
if isinstance(alpha, pygame.Surface):
alpha = alpha.get_masks()[3]
if alpha:
sample = sample_alpha
else:
sample = sample_noalpha
# We might not have initialized properly yet. This is enough
# to get us underway.
if sample is None:
sample = pygame.Surface((4, 4), pygame.SRCALPHA, 32)
surf = Surface((width + 4, height + 4), 0, sample)
return surf.subsurface((2, 2, width, height)) # E1101
surface_unscaled = surface
def copy_surface(surf, alpha=True):
"""
Creates a copy of the surface.
"""
rv = surface_unscaled(surf.get_size(), alpha)
renpy.display.accelerator.nogil_copy(surf, rv) # @UndefinedVariable
return rv
copy_surface_unscaled = copy_surface
# Wrapper around image loading.
def load_image(f, filename):
surf = pygame.image.load(f, renpy.exports.fsencode(filename))
rv = copy_surface_unscaled(surf)
return rv
load_image_unscaled = load_image
# Wrapper around functions we use from pygame.surface.
def flip(surf, horizontal, vertical):
surf = pygame.transform.flip(surf, horizontal, vertical)
return copy_surface_unscaled(surf)
flip_unscaled = flip
def rotozoom(surf, angle, zoom):
surf = pygame.transform.rotozoom(surf, angle, zoom)
return copy_surface_unscaled(surf)
rotozoom_unscaled = rotozoom
def transform_scale(surf, size):
surf = pygame.transform.scale(surf, size)
return copy_surface_unscaled(surf, surf)
transform_scale_unscaled = transform_scale
def transform_rotate(surf, angle):
surf = pygame.transform.rotate(surf, angle)
return copy_surface(surf)
transform_rotate_unscaled = transform_rotate
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