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Re: [pygame] gui with pygame + pyopengl

To: pygame-users@xxxxxxxx
Subject: Re: [pygame] gui with pygame + pyopengl
From: Astan Chee <stanc@xxxxxxxxx>
Date: Fri, 20 Jun 2008 11:33:45 +1000
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Hi,
Thanks for the suggestion and Im trying it out with pgu. Now Im having problems with the pgu interface. Can anyone help me?
I've attached my test code. Its basically a button or event that brings up a text entry dialog. So far its fine, as soon as the dialog is closed, it wont close. Any ideas?
Cheers
Stan

René Dudfield wrote:

hi,

Lamina allows you to use any pygame 2d gui with opengl.
http://pitchersduel.python-hosting.com/browser/branches/Lamina/

It's fairly easy to use, and comes with demos for ocempgui and pgu.

cheers,



On Wed, Jun 18, 2008 at 2:58 PM, Astan Chee <stanc@xxxxxxxxx> wrote:

Hi,
I was wondering if there is a way to get a simple text entry dialog on a
pygame+opengl surface. I've tried several and all of them seem to dislike
doing a .blit on a opengl surface and crash badly whenever I do anything on
it. Are there simple alternatives?
Thanks
Astan

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two."


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#!/usr/bin/env python
# demo of laminar.PanelOverlaySurface, by
#  David Keeney 2006
# based on version of Nehe's OpenGL lesson04
#  by Paul Furber 2001 - m@xxxxxxxxxxxx

# you need pgu to be installed, and you need a copy of the default theme directory
#   as 'test_theme', and you need the accompanying config.txt in that test_theme dir.

import sys
sys.path.insert( 0, '..' )

from OpenGL.GL import *
from OpenGL.GLU import *
import pygame
from pygame.locals import *

# import gui stuff
try:
    from pgu import gui as pgui
except ImportError:
    print "PGU GUI must be installed in order to run this demo. "
    print "PGU can be obtained from: "
    print " https://sourceforge.net/project/showfiles.php?group_id=145281";
    sys.exit()

import lamina

rtri = rquad = 0.0

triOn = quadOn = True
zoomAngle = 45
open_d = None

class OpenDialog(pgui.Dialog):
    def __init__(self,**params):
        title = pgui.Label("Input Position")
        
        t = pgui.Table()
        
        self.value = pgui.Form()
        
        t.tr()
        t.td(pgui.Label("Position: "))
        t.td(pgui.Input(name="pos"),colspan=3)
        
        t.tr()
        e = pgui.Button("Ok")
        e.connect(pgui.CLICK,self.send,pgui.CHANGE)
        t.td(e,colspan=2)
        
        e = pgui.Button("Cancel")
        e.connect(pgui.CLICK,self.close,None)
        t.td(e,colspan=2)
        
        pgui.Dialog.__init__(self,title,t)
    
def resize((width, height)):
    if height==0:
        height=1
    glViewport(0, 0, width, height)
    glMatrixMode(GL_PROJECTION)
    glLoadIdentity()
    gluPerspective(zoomAngle, 1.0*width/height, 0.1, 100.0)
    glMatrixMode(GL_MODELVIEW)
    glLoadIdentity()

def init():
    glShadeModel(GL_SMOOTH)
    glClearColor(0.0, 0.5, 0.0, 0.0)
    glClearDepth(1.0)
    glEnable(GL_DEPTH_TEST)
    glDepthFunc(GL_LEQUAL)
    glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST)

def draw():

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT)
    glLoadIdentity()
    glTranslatef(-1.5, 0.0, -6.0)

    # draw triangle
    global rtri
    glRotatef(rtri, 0.0, 1.0, 0.0)

    glBegin(GL_TRIANGLES)
    glColor3f(1.0, 0.0, 0.0)
    glVertex3f(0.0, 1.0, 0.0)
    glColor3f(0.0, 1.0, 0.0)
    glVertex3f(-1.0, -1.0, 0)
    glColor3f(0.0, 0.0, 1.0)
    glVertex3f(1.0, -1.0, 0)
    glEnd()

    # draw quad
    glLoadIdentity()
    glTranslatef(1.5, 0.0, -6.0)
    global rquad
    glRotatef(rquad, 1.0, 0.0, 0.0)

    glColor3f(0.5, 0.5, 1.0)
    glBegin(GL_QUADS)
    glVertex3f(-1.0, 1.0, 0)
    glVertex3f(1.0, 1.0, 0)
    glVertex3f(1.0, -1.0, 0)
    glVertex3f(-1.0, -1.0, 0)
    glEnd()

    # draw gui
    glLoadIdentity()
    global gui_screen
    gui_screen.display()


def main():

    global rtri, rquad, gui_screen, open_d
    video_flags = OPENGL|DOUBLEBUF
    
    pygame.init()
    pygame.display.set_mode((640,480), video_flags)
    font = pygame.font.SysFont("default", 18)
    fontBig = pygame.font.SysFont("default", 24)
    fontSub = pygame.font.SysFont("default", 20)
    theme = pgui.Theme('test_theme');

    resize((640,480))
    init()


    # create PanelOverlaySurface
#    gui_screen = lamina.LaminaPanelSurface((640,480), (-3.3, 2.5, 6.6, 5))
    gui_screen = lamina.LaminaScreenSurface()

    gui = pgui.App(theme=theme)
    gui._screen = gui_screen.surf

    # func to toggle triangle spin
    def triTog():
        global triOn
        triOn = not triOn
    # func to toggle quad spin
    def quadTog():
        global quadOn
        quadOn = not quadOn
    # func to toggle zoom
    def zoomTog():
        global zoomAngle
        if zoomAngle == 45:
            zoomAngle = 30
        else:
            zoomAngle = 45
        resize((640,480))
        gui_screen.refreshPosition()
        gui.repaint(gui_screen.surf)

    def action_open(meme):
        global open_d
        open_d.close()
        fname = open_d.value['pos']
        print fname.value

    # create page    # layout using document
    lo = pgui.Container(width=640) 

    # create page label
    title = pgui.Label("Lamina Demo : PGU", font=fontBig) 
    lo.add(title,29,13)
    
    # create triangle button, connect to triTog handler function,
    #  and install in gui
    btn1 = pgui.Button("Stop/Start Triangle")
    btn1.connect(pgui.CLICK, triTog)
    lo.add(btn1,120,440)
    btn2 = pgui.Button("Stop/Start Quad")
    btn2.connect(pgui.CLICK, quadTog)
    lo.add(btn2,420,440)
    # create zoom button, connect to zoomTog handler function,
    #  and install in gui    
    btn3 = pgui.Button('Zoom')
    btn3.connect(pgui.CLICK, zoomTog)
    lo.add(btn3,300,440)

    open_d = OpenDialog()
    open_d.connect(pgui.CHANGE,action_open,None)
    
    btn4 = pgui.Button('Ask')
    btn4.connect(pgui.CLICK, open_d.open)
    lo.add(btn4,300,240)
    gui.init(lo)

    frames = 0
    ticks = pygame.time.get_ticks()
    while 1:
        event = pygame.event.poll()
        if event.type == QUIT or (event.type == KEYDOWN and event.key == K_ESCAPE):
            break
        
        # handle gui events and raster updating
        gui.event((event))
        
        chg = gui.update(gui_screen.surf)
        if chg:
            gui_screen.refresh(chg)
        
        # draw all objects
        draw()
        
        # update rotation counters
        if triOn:
            rtri += 0.2
        if quadOn:
            rquad+= 0.2

        # make changes visible
        pygame.display.flip()
        frames = frames+1

    print "fps:  %d" % ((frames*1000)/(pygame.time.get_ticks()-ticks))
    pygame.quit()


if __name__ == '__main__': main()

References:
- [pygame] gui with pygame + pyopengl
  - From: Astan Chee
- Re: [pygame] gui with pygame + pyopengl
  - From: René Dudfield

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