# # "$Id: image_array.py 247 2006-08-22 05:54:01Z andreasheld $" # # Image test program for pyFLTK the Python bindings # for the Fast Light Tool Kit (FLTK). # # FLTK copyright 1998-1999 by Bill Spitzak and others. # pyFLTK copyright 2003 by Andreas Held and others. # # This library is free software you can redistribute it and/or # modify it under the terms of the GNU Library General Public # License as published by the Free Software Foundation either # version 2 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 # Library General Public License for more details. # # You should have received a copy of the GNU Library 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. # # Please report all bugs and problems to "pyfltk-user@lists.sourceforge.net". # from fltk import * from math import * import sys from array import * width = 100 height = 100 image = array('B') def make_image(): #image = new uchar[4*width*height]; #uchar *p = image; p = image index = 0 y = 0 while y < height: dy = float(y)/(height-1) x = 0 while x < width: dx = float(x)/(width-1) #print 255*((1.0-dx)*(1.0-dy)) p.append(int(255*((1.0-dx)*(1.0-dy)))) index = index+1 p.append(int(255*((1.0-dx)*dy))) index = index+1 p.append(int(255*(dx*dy))) index = index+1 dx = dx-0.5 dy = dy-0.5 alpha = int(255*sqrt(dx*dx+dy*dy)) if alpha < 255: p.append(alpha) else: p.append(255) index = index+1 dy = dy+0.5 x = x+1 y = y+1 return None #globals leftb = None rightb = None topb = None bottomb = None insideb = None overb = None inactb = None b = None w = None def button_cb(ptr): i = 0 if leftb.value(): i = i + FL_ALIGN_LEFT if rightb.value(): i = i + FL_ALIGN_RIGHT if topb.value(): i = i + FL_ALIGN_TOP if bottomb.value(): i = i + FL_ALIGN_BOTTOM if insideb.value(): i = i + FL_ALIGN_INSIDE if overb.value(): i = i + FL_ALIGN_TEXT_OVER_IMAGE b.align(i) if inactb.value(): b.deactivate() else: b.activate() w.redraw() window = Fl_Window(400,400) w = window window.color(FL_WHITE) b = Fl_Button(140,160,120,120,"Image w/Alpha") rgb = None dergb = None make_image() rgb = Fl_RGB_Image(image, width, height,4) dergb = rgb.copy() dergb.inactive() b.image(rgb) b.deimage(dergb) leftb = Fl_Toggle_Button(25,50,50,25,"left") leftb.callback(button_cb) rightb = Fl_Toggle_Button(75,50,50,25,"right") rightb.callback(button_cb) topb = Fl_Toggle_Button(125,50,50,25,"top") topb.callback(button_cb) bottomb = Fl_Toggle_Button(175,50,50,25,"bottom"); bottomb.callback(button_cb) insideb = Fl_Toggle_Button(225,50,50,25,"inside") insideb.callback(button_cb) overb = Fl_Toggle_Button(25,75,100,25,"text over") overb.callback(button_cb) inactb = Fl_Toggle_Button(125,75,100,25,"inactive") inactb.callback(button_cb) window.resizable(window) window.end() window.show(len(sys.argv), sys.argv) Fl.run()