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|
#
# Ruby/SDL Ruby extension library for SDL
# Copyright (C) 2001 Ohbayashi Ippei
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# This library 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
# Lesser General Public License for more details.
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
require 'sdl.so'
require 'forwardable'
if !defined?(block_given?) then
alias block_given? iterator?
end
module SDL
VERSION = "0.7"
class PixelFormat
extend Forwardable
def initialize(surface)
@surface = surface
end
def_delegators( :@surface, :mapRGB, :mapRGBA, :getRGB, :getRGBA, :bpp,
:colorkey, :alpha )
end
class Surface
def put(surface,x,y)
SDL::blitSurface(surface,0,0,surface.w,surface.h,self,x,y)
end
def format
return PixelFormat.new(self)
end
if defined?(rotateScaledSurface) then
def rotateSurface(angle,bgcolor)
rotateScaledSurface(angle,1.0,bgcolor)
end
end
end
def color2int(color,format)
case color
when Integer
return color
when Array
return format.mapRGB(*color)
else
raise Error,'first argument must be Integer or Array'
end
end
module_function :color2int
module Mouse
module_function
def setCursor(bitmap,white,black,transparent,inverted,hot_x=0,hot_y=0)
if bitmap.w % 8 != 0 then
raise SDL::Error,"width of cursor must be muliple of 8"
end
white=SDL.color2int(white,bitmap.format)
black=SDL.color2int(black,bitmap.format)
transparent=SDL.color2int(transparent,bitmap.format)
inverted=SDL.color2int(inverted,bitmap.format)
data=[]
mask=[]
i=-1
for y in 0..(bitmap.h-1)
for x in 0..(bitmap.w-1)
if x%8 != 0 then
data[i] <<= 1
mask[i] <<= 1
else
i+=1
data[i]=mask[i]=0
end
case bitmap.getPixel(x,y)
when white
mask[i] |= 0x01
when black
data[i] |= 0x01
mask[i] |= 0x01
when transparent
# do nothing
when inverted
data[i] |= 0x01
end
end
end
setCursor_imp data.pack('C*'),mask.pack('C*'),bitmap.w,bitmap.h,hot_x,hot_y
end
end # of module Mouse
module_function
if defined?(rotateXYScaled) then
def rotateScaled(src,dst,x,y,angle,scale)
rotateXYScaled(src,dst,x,y,angle,scale,scale)
end
def rotate(src,dst,x,y,angle)
rotateXYScaled(src,dst,x,y,angle,1,1)
end
def rotateBlit(src,dst,x,y,angle)
rotateScaledBlit(src,dst,x,y,angle,1)
end
end
if defined?(transform) then
def transformBlit(src,dst,angle,xscale,yscale,px,py,qx,qy,flags)
colorkey = src.colorkey
transformed = src.transformSurface( colorkey, angle,
xscale, yscale, flags )
transformed.setColorKey( src.flags & (SDL::SRCCOLORKEY|SDL::RLEACCEL),
colorkey )
rad = Math::PI*angle/180.0
x = px - src.w/2.0 ; y = py - src.h/2.0
x *= xscale ; y *= yscale
dst_x = x*Math.cos(rad)-y*Math.sin(rad)
dst_y = x*Math.sin(rad)+y*Math.cos(rad)
dst_x += transformed.w/2
dst_y += transformed.h/2
blitSurface( transformed, 0, 0, 0, 0, dst, qx-dst_x, qy-dst_y )
end
end
def blitSurface2(src,srcRect,dst,dstRect)
if srcRect.nil? && dstRect.nil? then
blitSurface(src,0,0,0,0,dst,0,0)
elsif srcRect.nil? then
blitSurface(src,0,0,0,0,dst,dstRect[0],dstRect[1])
elsif dstRect.nil? then
blitSurface(src,srcRect[0],srcRect[1],srcRect[2],srcRect[3],dst,0,0)
else
blitSurface(src,srcRect[0],srcRect[1],srcRect[2],srcRect[3],dst,
dstRect[0],dstRect[1])
end
end
if defined?(Mixer)
class << Mixer
alias open_imp open
private :open_imp
def open(frequency=Mixer::DEFAULT_FREQUENCY,format=Mixer::DEFAULT_FORMAT,
cannels=Mixer::DEFAULT_CHANNELS,chunksize=4096)
open_imp(frequency,format,cannels,chunksize)
end
end
end
if defined?(MPEG)
class MPEG
alias info_imp info
private :info_imp
def info(*arg)
case arg.size
when 0
result = SDL::MPEG::Info.new
info_imp(result)
result
when 1
info_imp(arg[0])
arg[0]
end
end
end
end
end
if defined?(GL) then
class << GL
alias Begin_imp Begin
private :Begin_imp
def Begin(mode)
if block_given? then
begin
Begin_imp(mode)
yield
ensure
End()
end
else
Begin_imp(mode)
end
end
end
end
|
