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Viewing changes to fltk/test/image_array.py

  • Committer: Bazaar Package Importer
  • Author(s): Aaron M. Ucko
  • Date: 2009-03-13 20:47:00 UTC
  • Revision ID: james.westby@ubuntu.com-20090313204700-ra4hgdlhxzrccas3
Tags: upstream-1.1.3
Import upstream version 1.1.3

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fltk/test/image_array.py
 
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#
 
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# "$Id: image_array.py 247 2006-08-22 05:54:01Z andreasheld $"
 
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#
 
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# Image test program for pyFLTK the Python bindings
 
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# for the Fast Light Tool Kit (FLTK).
 
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#
 
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# FLTK copyright 1998-1999 by Bill Spitzak and others.
 
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# pyFLTK copyright 2003 by Andreas Held and others.
 
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#
 
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# This library is free software you can redistribute it and/or
 
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# modify it under the terms of the GNU Library General Public
 
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# License as published by the Free Software Foundation either
 
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# version 2 of the License, or (at your option) any later version.
 
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#
 
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# This library is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 
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# Library General Public License for more details.
 
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#
 
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# You should have received a copy of the GNU Library General Public
 
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# License along with this library if not, write to the Free Software
 
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 
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# USA.
 
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#
 
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# Please report all bugs and problems to "pyfltk-user@lists.sourceforge.net".
 
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#
 
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from fltk import *
 
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from math import *
 
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import sys
 
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from array import *
 
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width = 100
 
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height = 100
 
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image = array('B')
 
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def make_image():
 
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        #image = new uchar[4*width*height];
 
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        #uchar *p = image;
 
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        p = image
 
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        index = 0
 
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        y = 0
 
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        while y < height:
 
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                dy = float(y)/(height-1)
 
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                x = 0
 
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                while x < width:
 
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                        dx = float(x)/(width-1)
 
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                        #print 255*((1.0-dx)*(1.0-dy))
 
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                        p.append(int(255*((1.0-dx)*(1.0-dy))))
 
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                        index = index+1
 
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                        p.append(int(255*((1.0-dx)*dy)))
 
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                        index = index+1
 
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                        p.append(int(255*(dx*dy)))
 
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                        index = index+1
 
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                        dx = dx-0.5
 
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                        dy = dy-0.5
 
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                        alpha = int(255*sqrt(dx*dx+dy*dy))
 
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                        if alpha < 255:
 
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                                p.append(alpha)
 
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                        else:
 
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                                p.append(255)
 
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                        index = index+1
 
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                        dy = dy+0.5
 
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                        x = x+1
 
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                y = y+1
 
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        return None
 
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#globals
 
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leftb = None
 
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rightb = None
 
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topb = None
 
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bottomb = None
 
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insideb = None
 
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overb = None
 
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inactb = None
 
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b = None
 
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w = None
 
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def button_cb(ptr):
 
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  i = 0
 
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  if leftb.value():
 
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    i = i + FL_ALIGN_LEFT
 
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  if rightb.value():
 
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    i = i + FL_ALIGN_RIGHT
 
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  if topb.value():
 
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    i = i + FL_ALIGN_TOP
 
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  if bottomb.value():
 
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    i = i + FL_ALIGN_BOTTOM
 
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  if insideb.value():
 
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    i = i + FL_ALIGN_INSIDE
 
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  if overb.value():
 
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    i = i + FL_ALIGN_TEXT_OVER_IMAGE
 
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  b.align(i)
 
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  if inactb.value():
 
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    b.deactivate()
 
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  else:
 
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    b.activate()
 
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  w.redraw()
 
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window = Fl_Window(400,400)
 
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w = window
 
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window.color(FL_WHITE)
 
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b = Fl_Button(140,160,120,120,"Image w/Alpha")
 
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rgb = None
 
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dergb = None
 
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make_image()
 
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rgb = Fl_RGB_Image(image, width, height,4)
 
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dergb = rgb.copy()
 
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dergb.inactive()
 
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b.image(rgb)
 
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b.deimage(dergb)
 
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leftb = Fl_Toggle_Button(25,50,50,25,"left")
 
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leftb.callback(button_cb)
 
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rightb = Fl_Toggle_Button(75,50,50,25,"right")
 
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rightb.callback(button_cb)
 
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topb = Fl_Toggle_Button(125,50,50,25,"top")
 
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topb.callback(button_cb)
 
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bottomb = Fl_Toggle_Button(175,50,50,25,"bottom");
 
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bottomb.callback(button_cb)
 
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insideb = Fl_Toggle_Button(225,50,50,25,"inside")
 
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insideb.callback(button_cb)
 
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overb = Fl_Toggle_Button(25,75,100,25,"text over")
 
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overb.callback(button_cb)
 
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inactb = Fl_Toggle_Button(125,75,100,25,"inactive")
 
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inactb.callback(button_cb)
 
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window.resizable(window)
 
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window.end()
 
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window.show(len(sys.argv), sys.argv)
 
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Fl.run()