futurize stage1 vui

This commit is contained in:
Simon Forman 2020-04-23 23:22:45 -07:00
parent 89b4eb5e15
commit 00db0fd0ad
9 changed files with 2662 additions and 2653 deletions

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@ -1,280 +1,281 @@
# -*- coding: utf-8 -*- # -*- coding: utf-8 -*-
# #
# Copyright © 2019 Simon Forman # Copyright © 2019 Simon Forman
# #
# This file is part of Thun # This file is part of Thun
# #
# Thun is free software: you can redistribute it and/or modify # Thun is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by # it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or # the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version. # (at your option) any later version.
# #
# Thun is distributed in the hope that it will be useful, # Thun is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of # but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details. # GNU General Public License for more details.
# #
# You should have received a copy of the GNU General Public License # You should have received a copy of the GNU General Public License
# along with Thun. If not see <http://www.gnu.org/licenses/>. # along with Thun. If not see <http://www.gnu.org/licenses/>.
# #
''' '''
Core Core
===================== =====================
The core module defines a bunch of system-wide "constants" (some colors The core module defines a bunch of system-wide "constants" (some colors
and PyGame event groups), the message classes for Oberon-style message and PyGame event groups), the message classes for Oberon-style message
passing, a "world" class that holds the main context for the system, and passing, a "world" class that holds the main context for the system, and
a mainloop class that manages the, uh, main loop (the PyGame event queue.) a mainloop class that manages the, uh, main loop (the PyGame event queue.)
''' '''
from sys import stderr from __future__ import print_function
from traceback import format_exc from sys import stderr
import pygame from traceback import format_exc
from joy.joy import run import pygame
from joy.utils.stack import stack_to_string from joy.joy import run
from joy.utils.stack import stack_to_string
COMMITTER = 'Joy <auto-commit@example.com>'
COMMITTER = 'Joy <auto-commit@example.com>'
BLACK = FOREGROUND = 0, 0, 0
GREY = 127, 127, 127 BLACK = FOREGROUND = 0, 0, 0
WHITE = BACKGROUND = 255, 255, 255 GREY = 127, 127, 127
BLUE = 100, 100, 255 WHITE = BACKGROUND = 255, 255, 255
GREEN = 70, 200, 70 BLUE = 100, 100, 255
GREEN = 70, 200, 70
MOUSE_EVENTS = frozenset({
pygame.MOUSEMOTION, MOUSE_EVENTS = frozenset({
pygame.MOUSEBUTTONDOWN, pygame.MOUSEMOTION,
pygame.MOUSEBUTTONUP pygame.MOUSEBUTTONDOWN,
}) pygame.MOUSEBUTTONUP
'PyGame mouse events.' })
'PyGame mouse events.'
ARROW_KEYS = frozenset({
pygame.K_UP, ARROW_KEYS = frozenset({
pygame.K_DOWN, pygame.K_UP,
pygame.K_LEFT, pygame.K_DOWN,
pygame.K_RIGHT pygame.K_LEFT,
}) pygame.K_RIGHT
'PyGame arrow key events.' })
'PyGame arrow key events.'
TASK_EVENTS = tuple(range(pygame.USEREVENT, pygame.NUMEVENTS))
'Keep track of all possible task events.' TASK_EVENTS = tuple(range(pygame.USEREVENT, pygame.NUMEVENTS))
'Keep track of all possible task events.'
AVAILABLE_TASK_EVENTS = set(TASK_EVENTS)
'Task IDs that have not been assigned to a task.' AVAILABLE_TASK_EVENTS = set(TASK_EVENTS)
'Task IDs that have not been assigned to a task.'
ALLOWED_EVENTS = [pygame.QUIT, pygame.KEYUP, pygame.KEYDOWN]
ALLOWED_EVENTS.extend(MOUSE_EVENTS) ALLOWED_EVENTS = [pygame.QUIT, pygame.KEYUP, pygame.KEYDOWN]
ALLOWED_EVENTS.extend(TASK_EVENTS) ALLOWED_EVENTS.extend(MOUSE_EVENTS)
'Event "mask" for PyGame event queue, we are only interested in these event types.' ALLOWED_EVENTS.extend(TASK_EVENTS)
'Event "mask" for PyGame event queue, we are only interested in these event types.'
ERROR = -1
PENDING = 0 ERROR = -1
SUCCESS = 1 PENDING = 0
# 'Message status codes... dunno if this is a good idea or not... SUCCESS = 1
# 'Message status codes... dunno if this is a good idea or not...
class Message(object):
'''Message base class. Contains ``sender`` field.''' class Message(object):
def __init__(self, sender): '''Message base class. Contains ``sender`` field.'''
self.sender = sender def __init__(self, sender):
self.sender = sender
class CommandMessage(Message):
'''For commands, adds ``command`` field.''' class CommandMessage(Message):
def __init__(self, sender, command): '''For commands, adds ``command`` field.'''
Message.__init__(self, sender) def __init__(self, sender, command):
self.command = command Message.__init__(self, sender)
self.command = command
class ModifyMessage(Message):
''' class ModifyMessage(Message):
For when resources are modified, adds ``subject`` and ``details`` '''
fields. For when resources are modified, adds ``subject`` and ``details``
''' fields.
def __init__(self, sender, subject, **details): '''
Message.__init__(self, sender) def __init__(self, sender, subject, **details):
self.subject = subject Message.__init__(self, sender)
self.details = details self.subject = subject
self.details = details
class OpenMessage(Message):
''' class OpenMessage(Message):
For when resources are modified, adds ``name``, content_id``, '''
``status``, and ``traceback`` fields. For when resources are modified, adds ``name``, content_id``,
''' ``status``, and ``traceback`` fields.
def __init__(self, sender, name): '''
Message.__init__(self, sender) def __init__(self, sender, name):
self.name = name Message.__init__(self, sender)
self.content_id = self.thing = None self.name = name
self.status = PENDING self.content_id = self.thing = None
self.traceback = None self.status = PENDING
self.traceback = None
class PersistMessage(Message):
''' class PersistMessage(Message):
For when resources are modified, adds ``content_id`` and ``details`` '''
fields. For when resources are modified, adds ``content_id`` and ``details``
''' fields.
def __init__(self, sender, content_id, **details): '''
Message.__init__(self, sender) def __init__(self, sender, content_id, **details):
self.content_id = content_id Message.__init__(self, sender)
self.details = details self.content_id = content_id
self.details = details
class ShutdownMessage(Message):
'''Signals that the system is shutting down.''' class ShutdownMessage(Message):
'''Signals that the system is shutting down.'''
# Joy Interpreter & Context
# Joy Interpreter & Context
class World(object):
''' class World(object):
This object contains the system context, the stack, dictionary, a '''
reference to the display broadcast method, and the log. This object contains the system context, the stack, dictionary, a
''' reference to the display broadcast method, and the log.
'''
def __init__(self, stack_id, stack_holder, dictionary, notify, log):
self.stack_holder = stack_holder def __init__(self, stack_id, stack_holder, dictionary, notify, log):
self.dictionary = dictionary self.stack_holder = stack_holder
self.notify = notify self.dictionary = dictionary
self.stack_id = stack_id self.notify = notify
self.log = log.lines self.stack_id = stack_id
self.log_id = log.content_id self.log = log.lines
self.log_id = log.content_id
def handle(self, message):
''' def handle(self, message):
Deal with updates to the stack and commands. '''
''' Deal with updates to the stack and commands.
if (isinstance(message, ModifyMessage) '''
and message.subject is self.stack_holder if (isinstance(message, ModifyMessage)
): and message.subject is self.stack_holder
self._log_lines('', '%s <-' % self.format_stack()) ):
if not isinstance(message, CommandMessage): self._log_lines('', '%s <-' % self.format_stack())
return if not isinstance(message, CommandMessage):
c, s, d = message.command, self.stack_holder[0], self.dictionary return
self._log_lines('', '-> %s' % (c,)) c, s, d = message.command, self.stack_holder[0], self.dictionary
self.stack_holder[0], _, self.dictionary = run(c, s, d) self._log_lines('', '-> %s' % (c,))
mm = ModifyMessage(self, self.stack_holder, content_id=self.stack_id) self.stack_holder[0], _, self.dictionary = run(c, s, d)
self.notify(mm) mm = ModifyMessage(self, self.stack_holder, content_id=self.stack_id)
self.notify(mm)
def _log_lines(self, *lines):
self.log.extend(lines) def _log_lines(self, *lines):
self.notify(ModifyMessage(self, self.log, content_id=self.log_id)) self.log.extend(lines)
self.notify(ModifyMessage(self, self.log, content_id=self.log_id))
def format_stack(self):
try: def format_stack(self):
return stack_to_string(self.stack_holder[0]) try:
except: return stack_to_string(self.stack_holder[0])
print >> stderr, format_exc() except:
return str(self.stack_holder[0]) print(format_exc(), file=stderr)
return str(self.stack_holder[0])
def push(sender, item, notify, stack_name='stack.pickle'):
''' def push(sender, item, notify, stack_name='stack.pickle'):
Helper function to push an item onto the system stack with message. '''
''' Helper function to push an item onto the system stack with message.
om = OpenMessage(sender, stack_name) '''
notify(om) om = OpenMessage(sender, stack_name)
if om.status == SUCCESS: notify(om)
om.thing[0] = item, om.thing[0] if om.status == SUCCESS:
notify(ModifyMessage(sender, om.thing, content_id=om.content_id)) om.thing[0] = item, om.thing[0]
return om.status notify(ModifyMessage(sender, om.thing, content_id=om.content_id))
return om.status
def open_viewer_on_string(sender, content, notify):
''' def open_viewer_on_string(sender, content, notify):
Helper function to open a text viewer on a string. '''
Typically used to show tracebacks. Helper function to open a text viewer on a string.
''' Typically used to show tracebacks.
push(sender, content, notify) '''
notify(CommandMessage(sender, 'good_viewer_location open_viewer')) push(sender, content, notify)
notify(CommandMessage(sender, 'good_viewer_location open_viewer'))
# main loop
# main loop
class TheLoop(object):
''' class TheLoop(object):
The main loop manages tasks and the PyGame event queue '''
and framerate clock. The main loop manages tasks and the PyGame event queue
''' and framerate clock.
'''
FRAME_RATE = 24
FRAME_RATE = 24
def __init__(self, display, clock):
self.display = display def __init__(self, display, clock):
self.clock = clock self.display = display
self.tasks = {} self.clock = clock
self.running = False self.tasks = {}
self.running = False
def install_task(self, F, milliseconds):
''' def install_task(self, F, milliseconds):
Install a task to run every so many milliseconds. '''
''' Install a task to run every so many milliseconds.
try: '''
task_event_id = AVAILABLE_TASK_EVENTS.pop() try:
except KeyError: task_event_id = AVAILABLE_TASK_EVENTS.pop()
raise RuntimeError('out of task ids') except KeyError:
self.tasks[task_event_id] = F raise RuntimeError('out of task ids')
pygame.time.set_timer(task_event_id, milliseconds) self.tasks[task_event_id] = F
return task_event_id pygame.time.set_timer(task_event_id, milliseconds)
return task_event_id
def remove_task(self, task_event_id):
''' def remove_task(self, task_event_id):
Remove an installed task. '''
''' Remove an installed task.
assert task_event_id in self.tasks, repr(task_event_id) '''
pygame.time.set_timer(task_event_id, 0) assert task_event_id in self.tasks, repr(task_event_id)
del self.tasks[task_event_id] pygame.time.set_timer(task_event_id, 0)
AVAILABLE_TASK_EVENTS.add(task_event_id) del self.tasks[task_event_id]
AVAILABLE_TASK_EVENTS.add(task_event_id)
def __del__(self):
# Best effort to cancel all running tasks. def __del__(self):
for task_event_id in self.tasks: # Best effort to cancel all running tasks.
pygame.time.set_timer(task_event_id, 0) for task_event_id in self.tasks:
pygame.time.set_timer(task_event_id, 0)
def run_task(self, task_event_id):
''' def run_task(self, task_event_id):
Give a task its time to shine. '''
''' Give a task its time to shine.
task = self.tasks[task_event_id] '''
try: task = self.tasks[task_event_id]
task() try:
except: task()
traceback = format_exc() except:
self.remove_task(task_event_id) traceback = format_exc()
print >> stderr, traceback self.remove_task(task_event_id)
print >> stderr, 'TASK removed due to ERROR', task print(traceback, file=stderr)
open_viewer_on_string(self, traceback, self.display.broadcast) print('TASK removed due to ERROR', task, file=stderr)
open_viewer_on_string(self, traceback, self.display.broadcast)
def loop(self):
''' def loop(self):
The actual main loop machinery. '''
The actual main loop machinery.
Maintain a ``running`` flag, pump the PyGame event queue and
handle the events (dispatching to the display), tick the clock. Maintain a ``running`` flag, pump the PyGame event queue and
handle the events (dispatching to the display), tick the clock.
When the loop is exited (by clicking the window close button or
pressing the ``escape`` key) it broadcasts a ``ShutdownMessage``. When the loop is exited (by clicking the window close button or
''' pressing the ``escape`` key) it broadcasts a ``ShutdownMessage``.
self.running = True '''
while self.running: self.running = True
for event in pygame.event.get(): while self.running:
if event.type == pygame.QUIT: for event in pygame.event.get():
self.running = False if event.type == pygame.QUIT:
elif event.type == pygame.KEYUP and event.key == pygame.K_ESCAPE: self.running = False
self.running = False elif event.type == pygame.KEYUP and event.key == pygame.K_ESCAPE:
elif event.type in self.tasks: self.running = False
self.run_task(event.type) elif event.type in self.tasks:
else: self.run_task(event.type)
self.display.dispatch_event(event) else:
pygame.display.update() self.display.dispatch_event(event)
self.clock.tick(self.FRAME_RATE) pygame.display.update()
self.display.broadcast(ShutdownMessage(self)) self.clock.tick(self.FRAME_RATE)
self.display.broadcast(ShutdownMessage(self))

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@ -1,18 +1,19 @@
import sys, traceback from __future__ import absolute_import
import sys, traceback
# To enable "hot" reloading in the IDLE shell.
for name in 'core main display viewer text_viewer stack_viewer persist_task'.split(): # To enable "hot" reloading in the IDLE shell.
try: for name in 'core main display viewer text_viewer stack_viewer persist_task'.split():
del sys.modules[name] try:
except KeyError: del sys.modules[name]
pass except KeyError:
pass
import main
from . import main
try:
A = A # (screen, clock, pt), three things that we DON'T want to recreate try:
# each time we restart main(). A = A # (screen, clock, pt), three things that we DON'T want to recreate
except NameError: # each time we restart main().
A = main.init() except NameError:
A = main.init()
d = main.main(*A)
d = main.main(*A)

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# -*- coding: utf-8 -*- # -*- coding: utf-8 -*-
# #
# Copyright © 2019 Simon Forman # Copyright © 2019 Simon Forman
# #
# This file is part of Thun # This file is part of Thun
# #
# Thun is free software: you can redistribute it and/or modify # Thun is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by # it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or # the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version. # (at your option) any later version.
# #
# Thun is distributed in the hope that it will be useful, # Thun is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of # but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details. # GNU General Public License for more details.
# #
# You should have received a copy of the GNU General Public License # You should have received a copy of the GNU General Public License
# along with Thun. If not see <http://www.gnu.org/licenses/>. # along with Thun. If not see <http://www.gnu.org/licenses/>.
# #
from StringIO import StringIO from __future__ import print_function
import base64, zlib from StringIO import StringIO
import base64, zlib
def create(fn='Iosevka12.BMP'):
with open(fn, 'rb') as f: def create(fn='Iosevka12.BMP'):
data = f.read() with open(fn, 'rb') as f:
return base64.encodestring(zlib.compress(data)) data = f.read()
return base64.encodestring(zlib.compress(data))
data = StringIO(zlib.decompress(base64.decodestring('''\
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lnalXc/9SsNb2vUirzS8pV0v8gJv/w/2vRht''')))
if __name__ == '__main__':
print create() if __name__ == '__main__':
print(create())

View File

@ -1,275 +1,276 @@
# -*- coding: utf-8 -*- # -*- coding: utf-8 -*-
# #
# Copyright © 2019 Simon Forman # Copyright © 2019 Simon Forman
# #
# This file is part of Thun # This file is part of Thun
# #
# Thun is free software: you can redistribute it and/or modify # Thun is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by # it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or # the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version. # (at your option) any later version.
# #
# Thun is distributed in the hope that it will be useful, # Thun is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of # but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details. # GNU General Public License for more details.
# #
# You should have received a copy of the GNU General Public License # You should have received a copy of the GNU General Public License
# along with Thun. If not see <http://www.gnu.org/licenses/>. # along with Thun. If not see <http://www.gnu.org/licenses/>.
# #
''' '''
Utility module to help with setting up the initial contents of the Utility module to help with setting up the initial contents of the
JOY_HOME directory. JOY_HOME directory.
These contents are kept in this Python module as a base64-encoded zip These contents are kept in this Python module as a base64-encoded zip
file, so you can just do, e.g.: file, so you can just do, e.g.:
import init_joy_home import init_joy_home
init_joy_home.initialize(JOY_HOME) init_joy_home.initialize(JOY_HOME)
''' '''
import base64, os, StringIO, zipfile from __future__ import print_function
import base64, os, StringIO, zipfile
def initialize(joy_home):
Z.extractall(joy_home) def initialize(joy_home):
Z.extractall(joy_home)
def create_data(from_dir='./default_joy_home'):
f = StringIO.StringIO() def create_data(from_dir='./default_joy_home'):
z = zipfile.ZipFile(f, mode='w') f = StringIO.StringIO()
for fn in os.listdir(from_dir): z = zipfile.ZipFile(f, mode='w')
from_fn = os.path.join(from_dir, fn) for fn in os.listdir(from_dir):
z.write(from_fn, fn) from_fn = os.path.join(from_dir, fn)
z.close() z.write(from_fn, fn)
return base64.encodestring(f.getvalue()) z.close()
return base64.encodestring(f.getvalue())
Z = zipfile.ZipFile(StringIO.StringIO(base64.decodestring('''\
UEsDBBQAAAAAAORmeE794BlRfgMAAH4DAAAPAAAAZGVmaW5pdGlvbnMudHh0c2VlX3N0YWNrID09 Z = zipfile.ZipFile(StringIO.StringIO(base64.decodestring('''\
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if __name__ == '__main__':
print create_data() if __name__ == '__main__':
print(create_data())

View File

@ -1,174 +1,175 @@
# -*- coding: utf-8 -*- # -*- coding: utf-8 -*-
# #
# Copyright © 2019 Simon Forman # Copyright © 2019 Simon Forman
# #
# This file is part of Thun # This file is part of Thun
# #
# Thun is free software: you can redistribute it and/or modify # Thun is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by # it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or # the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version. # (at your option) any later version.
# #
# Thun is distributed in the hope that it will be useful, # Thun is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of # but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details. # GNU General Public License for more details.
# #
# You should have received a copy of the GNU General Public License # You should have received a copy of the GNU General Public License
# along with Thun. If not see <http://www.gnu.org/licenses/>. # along with Thun. If not see <http://www.gnu.org/licenses/>.
# #
''' '''
Main Module Main Module
====================================== ======================================
Pulls everything together. Pulls everything together.
''' '''
import os, sys, traceback from __future__ import print_function
import pygame import os, sys, traceback
from joy.library import initialize, DefinitionWrapper, SimpleFunctionWrapper import pygame
from joy.vui import core, display, persist_task from joy.library import initialize, DefinitionWrapper, SimpleFunctionWrapper
from joy.vui import core, display, persist_task
FULLSCREEN = '-f' in sys.argv
FULLSCREEN = '-f' in sys.argv
JOY_HOME = os.environ.get('JOY_HOME')
if JOY_HOME is None: JOY_HOME = os.environ.get('JOY_HOME')
JOY_HOME = os.path.expanduser('~/.thun') if JOY_HOME is None:
if not os.path.isabs(JOY_HOME): JOY_HOME = os.path.expanduser('~/.thun')
raise ValueError('what directory?') if not os.path.isabs(JOY_HOME):
raise ValueError('what directory?')
def load_definitions(pt, dictionary):
'''Load definitions from ``definitions.txt``.''' def load_definitions(pt, dictionary):
lines = pt.open('definitions.txt')[1] '''Load definitions from ``definitions.txt``.'''
for line in lines: lines = pt.open('definitions.txt')[1]
if '==' in line: for line in lines:
DefinitionWrapper.add_def(line, dictionary) if '==' in line:
DefinitionWrapper.add_def(line, dictionary)
def load_primitives(home, name_space):
'''Load primitives from ``library.py``.''' def load_primitives(home, name_space):
fn = os.path.join(home, 'library.py') '''Load primitives from ``library.py``.'''
if os.path.exists(fn): fn = os.path.join(home, 'library.py')
execfile(fn, name_space) if os.path.exists(fn):
execfile(fn, name_space)
def init():
''' def init():
Initialize the system. '''
Initialize the system.
* Init PyGame
* Create main window * Init PyGame
* Start the PyGame clock * Create main window
* Set the event mask * Start the PyGame clock
* Create the PersistTask * Set the event mask
* Create the PersistTask
'''
print 'Initializing Pygame...' '''
pygame.init() print('Initializing Pygame...')
print 'Creating window...' pygame.init()
if FULLSCREEN: print('Creating window...')
screen = pygame.display.set_mode() if FULLSCREEN:
else: screen = pygame.display.set_mode()
screen = pygame.display.set_mode((1024, 768)) else:
clock = pygame.time.Clock() screen = pygame.display.set_mode((1024, 768))
pygame.event.set_allowed(None) clock = pygame.time.Clock()
pygame.event.set_allowed(core.ALLOWED_EVENTS) pygame.event.set_allowed(None)
pt = persist_task.PersistTask(JOY_HOME) pygame.event.set_allowed(core.ALLOWED_EVENTS)
return screen, clock, pt pt = persist_task.PersistTask(JOY_HOME)
return screen, clock, pt
def init_context(screen, clock, pt):
''' def init_context(screen, clock, pt):
More initialization '''
More initialization
* Create the Joy dictionary
* Create the Display * Create the Joy dictionary
* Open the log, menu, and scratch text viewers, and the stack pickle * Create the Display
* Start the main loop * Open the log, menu, and scratch text viewers, and the stack pickle
* Create the World object * Start the main loop
* Register PersistTask and World message handlers with the Display * Create the World object
* Load user function definitions. * Register PersistTask and World message handlers with the Display
* Load user function definitions.
'''
D = initialize() '''
d = display.Display( D = initialize()
screen, d = display.Display(
D.__contains__, screen,
*((144 - 89, 144, 89) if FULLSCREEN else (89, 144)) D.__contains__,
) *((144 - 89, 144, 89) if FULLSCREEN else (89, 144))
log = d.init_text(pt, 0, 0, 'log.txt') )
tho = d.init_text(pt, 0, d.h / 3, 'menu.txt') log = d.init_text(pt, 0, 0, 'log.txt')
t = d.init_text(pt, d.w / 2, 0, 'scratch.txt') tho = d.init_text(pt, 0, d.h / 3, 'menu.txt')
loop = core.TheLoop(d, clock) t = d.init_text(pt, d.w / 2, 0, 'scratch.txt')
stack_id, stack_holder = pt.open('stack.pickle') loop = core.TheLoop(d, clock)
world = core.World(stack_id, stack_holder, D, d.broadcast, log) stack_id, stack_holder = pt.open('stack.pickle')
loop.install_task(pt.task_run, 10000) # save files every ten seconds world = core.World(stack_id, stack_holder, D, d.broadcast, log)
d.handlers.append(pt.handle) loop.install_task(pt.task_run, 10000) # save files every ten seconds
d.handlers.append(world.handle) d.handlers.append(pt.handle)
load_definitions(pt, D) d.handlers.append(world.handle)
return locals() load_definitions(pt, D)
return locals()
def error_guard(loop, n=10):
''' def error_guard(loop, n=10):
Run a loop function, retry for ``n`` exceptions. '''
Prints tracebacks on ``sys.stderr``. Run a loop function, retry for ``n`` exceptions.
''' Prints tracebacks on ``sys.stderr``.
error_count = 0 '''
while error_count < n: error_count = 0
try: while error_count < n:
loop() try:
break loop()
except: break
traceback.print_exc(file=sys.stderr) except:
error_count += 1 traceback.print_exc(file=sys.stderr)
error_count += 1
class FileFaker(object):
'''Pretends to be a file object but writes to log instead.''' class FileFaker(object):
'''Pretends to be a file object but writes to log instead.'''
def __init__(self, log):
self.log = log def __init__(self, log):
self.log = log
def write(self, text):
'''Write text to log.''' def write(self, text):
self.log.append(text) '''Write text to log.'''
self.log.append(text)
def flush(self):
pass def flush(self):
pass
def main(screen, clock, pt):
''' def main(screen, clock, pt):
Main function. '''
Main function.
* Call ``init_context()``
* Load primitives * Call ``init_context()``
* Create an ``evaluate`` function that lets you just eval some Python code * Load primitives
* Redirect ``stdout`` to the log using a ``FileFaker`` object, and... * Create an ``evaluate`` function that lets you just eval some Python code
* Start the main loop. * Redirect ``stdout`` to the log using a ``FileFaker`` object, and...
''' * Start the main loop.
name_space = init_context(screen, clock, pt) '''
load_primitives(pt.home, name_space.copy()) name_space = init_context(screen, clock, pt)
load_primitives(pt.home, name_space.copy())
@SimpleFunctionWrapper
def evaluate(stack): @SimpleFunctionWrapper
'''Evaluate the Python code text on the top of the stack.''' def evaluate(stack):
code, stack = stack '''Evaluate the Python code text on the top of the stack.'''
exec code in name_space.copy() code, stack = stack
return stack exec(code, name_space.copy())
return stack
name_space['D']['evaluate'] = evaluate
name_space['D']['evaluate'] = evaluate
sys.stdout, old_stdout = FileFaker(name_space['log']), sys.stdout
try: sys.stdout, old_stdout = FileFaker(name_space['log']), sys.stdout
error_guard(name_space['loop'].loop) try:
finally: error_guard(name_space['loop'].loop)
sys.stdout = old_stdout finally:
sys.stdout = old_stdout
return name_space['d']
return name_space['d']

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@ -1,272 +1,273 @@
# -*- coding: utf-8 -*- # -*- coding: utf-8 -*-
# #
# Copyright © 2019 Simon Forman # Copyright © 2019 Simon Forman
# #
# This file is part of Thun # This file is part of Thun
# #
# Thun is free software: you can redistribute it and/or modify # Thun is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by # it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or # the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version. # (at your option) any later version.
# #
# Thun is distributed in the hope that it will be useful, # Thun is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of # but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details. # GNU General Public License for more details.
# #
# You should have received a copy of the GNU General Public License # You should have received a copy of the GNU General Public License
# along with Thun. If not see <http://www.gnu.org/licenses/>. # along with Thun. If not see <http://www.gnu.org/licenses/>.
# #
''' '''
Persist Task Persist Task
=========================== ===========================
This module deals with persisting the "resources" (text files and the This module deals with persisting the "resources" (text files and the
stack) to the git repo in the ``JOY_HOME`` directory. stack) to the git repo in the ``JOY_HOME`` directory.
''' '''
import os, pickle, traceback from __future__ import print_function
from collections import Counter import os, pickle, traceback
from dulwich.errors import NotGitRepository from collections import Counter
from dulwich.repo import Repo from dulwich.errors import NotGitRepository
from joy.vui import core, init_joy_home from dulwich.repo import Repo
from joy.vui import core, init_joy_home
def open_repo(repo_dir=None, initialize=False):
''' def open_repo(repo_dir=None, initialize=False):
Open, or create, and return a Dulwich git repo object for the given '''
directory. If the dir path doesn't exist it will be created. If it Open, or create, and return a Dulwich git repo object for the given
does exist but isn't a repo the result depends on the ``initialize`` directory. If the dir path doesn't exist it will be created. If it
argument. If it is ``False`` (the default) a ``NotGitRepository`` does exist but isn't a repo the result depends on the ``initialize``
exception is raised, otherwise ``git init`` is effected in the dir. argument. If it is ``False`` (the default) a ``NotGitRepository``
''' exception is raised, otherwise ``git init`` is effected in the dir.
if not os.path.exists(repo_dir): '''
os.makedirs(repo_dir, 0700) if not os.path.exists(repo_dir):
return init_repo(repo_dir) os.makedirs(repo_dir, 0o700)
try: return init_repo(repo_dir)
return Repo(repo_dir) try:
except NotGitRepository: return Repo(repo_dir)
if initialize: except NotGitRepository:
return init_repo(repo_dir) if initialize:
raise return init_repo(repo_dir)
raise
def init_repo(repo_dir):
''' def init_repo(repo_dir):
Initialize a git repository in the directory. Stage and commit all '''
files (toplevel, not those in subdirectories if any) in the dir. Initialize a git repository in the directory. Stage and commit all
''' files (toplevel, not those in subdirectories if any) in the dir.
repo = Repo.init(repo_dir) '''
init_joy_home.initialize(repo_dir) repo = Repo.init(repo_dir)
repo.stage([ init_joy_home.initialize(repo_dir)
fn repo.stage([
for fn in os.listdir(repo_dir) fn
if os.path.isfile(os.path.join(repo_dir, fn)) for fn in os.listdir(repo_dir)
]) if os.path.isfile(os.path.join(repo_dir, fn))
repo.do_commit('Initial commit.', committer=core.COMMITTER) ])
return repo repo.do_commit('Initial commit.', committer=core.COMMITTER)
return repo
def make_repo_relative_path_maker(repo):
''' def make_repo_relative_path_maker(repo):
Helper function to return a function that returns a path given a path, '''
that's relative to the repository. Helper function to return a function that returns a path given a path,
''' that's relative to the repository.
c = repo.controldir() '''
def repo_relative_path(path): c = repo.controldir()
return os.path.relpath(path, os.path.commonprefix((c, path))) def repo_relative_path(path):
return repo_relative_path return os.path.relpath(path, os.path.commonprefix((c, path)))
return repo_relative_path
class Resource(object):
''' class Resource(object):
Handle the content of a text files as a list of lines, deal with '''
saving it and staging the changes to a repo. Handle the content of a text files as a list of lines, deal with
''' saving it and staging the changes to a repo.
'''
def __init__(self, filename, repo_relative_filename, thing=None):
self.filename = filename def __init__(self, filename, repo_relative_filename, thing=None):
self.repo_relative_filename = repo_relative_filename self.filename = filename
self.thing = thing or self._from_file(open(filename)) self.repo_relative_filename = repo_relative_filename
self.thing = thing or self._from_file(open(filename))
def _from_file(self, f):
return f.read().splitlines() def _from_file(self, f):
return f.read().splitlines()
def _to_file(self, f):
for line in self.thing: def _to_file(self, f):
print >> f, line for line in self.thing:
print(line, file=f)
def persist(self, repo):
''' def persist(self, repo):
Save the lines to the file and stage the file in the repo. '''
''' Save the lines to the file and stage the file in the repo.
with open(self.filename, 'w') as f: '''
os.chmod(self.filename, 0600) with open(self.filename, 'w') as f:
self._to_file(f) os.chmod(self.filename, 0o600)
f.flush() self._to_file(f)
os.fsync(f.fileno()) f.flush()
# For goodness's sake, write it to the disk already! os.fsync(f.fileno())
repo.stage([self.repo_relative_filename]) # For goodness's sake, write it to the disk already!
repo.stage([self.repo_relative_filename])
class PickledResource(Resource):
''' class PickledResource(Resource):
A ``Resource`` subclass that uses ``pickle`` on its file/thing. '''
''' A ``Resource`` subclass that uses ``pickle`` on its file/thing.
'''
def _from_file(self, f):
return [pickle.load(f)] def _from_file(self, f):
return [pickle.load(f)]
def _to_file(self, f):
pickle.dump(self.thing[0], f) def _to_file(self, f):
pickle.dump(self.thing[0], f)
class PersistTask(object):
''' class PersistTask(object):
This class deals with saving changes to the git repo. '''
''' This class deals with saving changes to the git repo.
'''
LIMIT = 10
MAX_SAVE = 10 LIMIT = 10
MAX_SAVE = 10
def __init__(self, home):
self.home = home def __init__(self, home):
self.repo = open_repo(home) self.home = home
self._r = make_repo_relative_path_maker(self.repo) self.repo = open_repo(home)
self.counter = Counter() self._r = make_repo_relative_path_maker(self.repo)
self.store = {} self.counter = Counter()
self.store = {}
def open(self, name):
''' def open(self, name):
Look up the named file in home and return its content_id and data. '''
''' Look up the named file in home and return its content_id and data.
fn = os.path.join(self.home, name) '''
content_id = name # hash(fn) fn = os.path.join(self.home, name)
try: content_id = name # hash(fn)
resource = self.store[content_id] try:
except KeyError: resource = self.store[content_id]
R = PickledResource if name.endswith('.pickle') else Resource except KeyError:
resource = self.store[content_id] = R(fn, self._r(fn)) R = PickledResource if name.endswith('.pickle') else Resource
return content_id, resource.thing resource = self.store[content_id] = R(fn, self._r(fn))
return content_id, resource.thing
def handle(self, message):
''' def handle(self, message):
Handle messages, dispatch to ``handle_FOO()`` methods. '''
''' Handle messages, dispatch to ``handle_FOO()`` methods.
if isinstance(message, core.OpenMessage): '''
self.handle_open(message) if isinstance(message, core.OpenMessage):
elif isinstance(message, core.ModifyMessage): self.handle_open(message)
self.handle_modify(message) elif isinstance(message, core.ModifyMessage):
elif isinstance(message, core.PersistMessage): self.handle_modify(message)
self.handle_persist(message) elif isinstance(message, core.PersistMessage):
elif isinstance(message, core.ShutdownMessage): self.handle_persist(message)
for content_id in self.counter: elif isinstance(message, core.ShutdownMessage):
self.store[content_id].persist(self.repo) for content_id in self.counter:
self.commit('shutdown') self.store[content_id].persist(self.repo)
self.commit('shutdown')
def handle_open(self, message):
''' def handle_open(self, message):
Foo. '''
''' Foo.
try: '''
message.content_id, message.thing = self.open(message.name) try:
except: message.content_id, message.thing = self.open(message.name)
message.traceback = traceback.format_exc() except:
message.status = core.ERROR message.traceback = traceback.format_exc()
else: message.status = core.ERROR
message.status = core.SUCCESS else:
message.status = core.SUCCESS
def handle_modify(self, message):
''' def handle_modify(self, message):
Foo. '''
''' Foo.
try: '''
content_id = message.details['content_id'] try:
except KeyError: content_id = message.details['content_id']
return except KeyError:
if not content_id: return
return if not content_id:
self.counter[content_id] += 1 return
if self.counter[content_id] > self.LIMIT: self.counter[content_id] += 1
self.persist(content_id) if self.counter[content_id] > self.LIMIT:
self.commit('due to activity') self.persist(content_id)
self.commit('due to activity')
def handle_persist(self, message):
''' def handle_persist(self, message):
Foo. '''
''' Foo.
try: '''
resource = self.store[message.content_id] try:
except KeyError: resource = self.store[message.content_id]
resource = self.handle_persist_new(message) except KeyError:
resource.persist(self.repo) resource = self.handle_persist_new(message)
self.commit('by request from %r' % (message.sender,)) resource.persist(self.repo)
self.commit('by request from %r' % (message.sender,))
def handle_persist_new(self, message):
''' def handle_persist_new(self, message):
Foo. '''
''' Foo.
name = message.content_id '''
check_filename(name) name = message.content_id
fn = os.path.join(self.home, name) check_filename(name)
thing = message.details['thing'] fn = os.path.join(self.home, name)
R = PickledResource if name.endswith('.pickle') else Resource # !!! refactor! thing = message.details['thing']
resource = self.store[name] = R(fn, self._r(fn), thing) R = PickledResource if name.endswith('.pickle') else Resource # !!! refactor!
return resource resource = self.store[name] = R(fn, self._r(fn), thing)
return resource
def persist(self, content_id):
''' def persist(self, content_id):
Persist a resource. '''
''' Persist a resource.
del self.counter[content_id] '''
self.store[content_id].persist(self.repo) del self.counter[content_id]
self.store[content_id].persist(self.repo)
def task_run(self):
''' def task_run(self):
Stage any outstanding changes. '''
''' Stage any outstanding changes.
if not self.counter: '''
return if not self.counter:
for content_id, _ in self.counter.most_common(self.MAX_SAVE): return
self.persist(content_id) for content_id, _ in self.counter.most_common(self.MAX_SAVE):
self.commit() self.persist(content_id)
self.commit()
def commit(self, message='auto-commit'):
''' def commit(self, message='auto-commit'):
Commit. '''
''' Commit.
return self.repo.do_commit(message, committer=core.COMMITTER) '''
return self.repo.do_commit(message, committer=core.COMMITTER)
def scan(self):
''' def scan(self):
Return a sorted list of all the files in the home dir. '''
''' Return a sorted list of all the files in the home dir.
return sorted([ '''
fn return sorted([
for fn in os.listdir(self.home) fn
if os.path.isfile(os.path.join(self.home, fn)) for fn in os.listdir(self.home)
]) if os.path.isfile(os.path.join(self.home, fn))
])
def check_filename(name):
''' def check_filename(name):
Sanity checks for filename. '''
''' Sanity checks for filename.
# TODO: improve this... '''
if len(name) > 64: # TODO: improve this...
raise ValueError('bad name %r' % (name,)) if len(name) > 64:
left, dot, right = name.partition('.') raise ValueError('bad name %r' % (name,))
if not left.isalnum() or dot and not right.isalnum(): left, dot, right = name.partition('.')
raise ValueError('bad name %r' % (name,)) if not left.isalnum() or dot and not right.isalnum():
raise ValueError('bad name %r' % (name,))
if __name__ == '__main__':
JOY_HOME = os.path.expanduser('~/.thun') if __name__ == '__main__':
pt = PersistTask(JOY_HOME) JOY_HOME = os.path.expanduser('~/.thun')
content_id, thing = pt.open('stack.pickle') pt = PersistTask(JOY_HOME)
pt.persist(content_id) content_id, thing = pt.open('stack.pickle')
print pt.counter pt.persist(content_id)
mm = core.ModifyMessage(None, None, content_id=content_id) print(pt.counter)
pt.handle(mm) mm = core.ModifyMessage(None, None, content_id=content_id)
print pt.counter pt.handle(mm)
print(pt.counter)

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@ -1,245 +1,246 @@
# -*- coding: utf-8 -*- # -*- coding: utf-8 -*-
# #
# Copyright © 2019 Simon Forman # Copyright © 2019 Simon Forman
# #
# This file is part of joy.py # This file is part of joy.py
# #
# joy.py is free software: you can redistribute it and/or modify # joy.py is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by # it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or # the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version. # (at your option) any later version.
# #
# joy.py is distributed in the hope that it will be useful, # joy.py is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of # but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details. # GNU General Public License for more details.
# #
# You should have received a copy of the GNU General Public License # You should have received a copy of the GNU General Public License
# along with joy.py. If not see <http://www.gnu.org/licenses/>. # along with joy.py. If not see <http://www.gnu.org/licenses/>.
# #
''' '''
Viewer Viewer
================= =================
''' '''
import pygame from __future__ import print_function
from joy.vui.core import BACKGROUND, FOREGROUND import pygame
from joy.vui.core import BACKGROUND, FOREGROUND
class Viewer(object):
''' class Viewer(object):
Base Viewer class '''
''' Base Viewer class
'''
MINIMUM_HEIGHT = 11
MINIMUM_HEIGHT = 11
def __init__(self, surface):
self.resurface(surface) def __init__(self, surface):
self.last_touch = 0, 0 self.resurface(surface)
self.last_touch = 0, 0
def resurface(self, surface):
self.w, self.h = surface.get_width(), surface.get_height() def resurface(self, surface):
self.surface = surface self.w, self.h = surface.get_width(), surface.get_height()
self.surface = surface
def split(self, y):
''' def split(self, y):
Split the viewer at the y coordinate (which is relative to the '''
viewer's surface and must be inside it somewhere) and return the Split the viewer at the y coordinate (which is relative to the
remaining height. The upper part of the viewer remains (and gets viewer's surface and must be inside it somewhere) and return the
redrawn on a new surface) and the lower space is now available remaining height. The upper part of the viewer remains (and gets
for e.g. a new viewer. redrawn on a new surface) and the lower space is now available
''' for e.g. a new viewer.
assert y >= self.MINIMUM_HEIGHT '''
new_viewer_h = self.h - y assert y >= self.MINIMUM_HEIGHT
self.resurface(self.surface.subsurface((0, 0, self.w, y))) new_viewer_h = self.h - y
if y <= self.last_touch[1]: self.last_touch = 0, 0 self.resurface(self.surface.subsurface((0, 0, self.w, y)))
self.draw() if y <= self.last_touch[1]: self.last_touch = 0, 0
return new_viewer_h self.draw()
return new_viewer_h
def handle(self, message):
assert self is not message.sender def handle(self, message):
pass assert self is not message.sender
pass
def draw(self):
'''Draw the viewer onto its surface.''' def draw(self):
self.surface.fill(BACKGROUND) '''Draw the viewer onto its surface.'''
x, y, h = self.w - 1, self.MINIMUM_HEIGHT, self.h - 1 self.surface.fill(BACKGROUND)
# Right-hand side. x, y, h = self.w - 1, self.MINIMUM_HEIGHT, self.h - 1
pygame.draw.line(self.surface, FOREGROUND, (x, 0), (x, h)) # Right-hand side.
# Between header and body. pygame.draw.line(self.surface, FOREGROUND, (x, 0), (x, h))
pygame.draw.line(self.surface, FOREGROUND, (0, y), (x, y)) # Between header and body.
# Bottom. pygame.draw.line(self.surface, FOREGROUND, (0, y), (x, y))
pygame.draw.line(self.surface, FOREGROUND, (0, h), (x, h)) # Bottom.
pygame.draw.line(self.surface, FOREGROUND, (0, h), (x, h))
def close(self):
'''Close the viewer and release any resources, etc...''' def close(self):
'''Close the viewer and release any resources, etc...'''
def focus(self, display):
pass def focus(self, display):
pass
def unfocus(self):
pass def unfocus(self):
pass
# Event handling.
# Event handling.
def mouse_down(self, display, x, y, button):
self.last_touch = x, y def mouse_down(self, display, x, y, button):
self.last_touch = x, y
def mouse_up(self, display, x, y, button):
pass def mouse_up(self, display, x, y, button):
pass
def mouse_motion(self, display, x, y, dx, dy, button0, button1, button2):
pass def mouse_motion(self, display, x, y, dx, dy, button0, button1, button2):
pass
def key_up(self, display, key, mod):
if key == pygame.K_q and mod & pygame.KMOD_CTRL: # Ctrl-q def key_up(self, display, key, mod):
display.close_viewer(self) if key == pygame.K_q and mod & pygame.KMOD_CTRL: # Ctrl-q
return True display.close_viewer(self)
if key == pygame.K_g and mod & pygame.KMOD_CTRL: # Ctrl-g return True
display.grow_viewer(self) if key == pygame.K_g and mod & pygame.KMOD_CTRL: # Ctrl-g
return True display.grow_viewer(self)
return True
def key_down(self, display, uch, key, mod):
pass def key_down(self, display, uch, key, mod):
pass
class MenuViewer(Viewer):
class MenuViewer(Viewer):
'''
MenuViewer class '''
''' MenuViewer class
'''
MINIMUM_HEIGHT = 26
MINIMUM_HEIGHT = 26
def __init__(self, surface):
Viewer.__init__(self, surface) def __init__(self, surface):
self.resizing = 0 Viewer.__init__(self, surface)
self.bg = 100, 150, 100 self.resizing = 0
self.bg = 100, 150, 100
def resurface(self, surface):
Viewer.resurface(self, surface) def resurface(self, surface):
n = self.MINIMUM_HEIGHT - 2 Viewer.resurface(self, surface)
self.close_rect = pygame.rect.Rect(self.w - 2 - n, 1, n, n) n = self.MINIMUM_HEIGHT - 2
self.grow_rect = pygame.rect.Rect(1, 1, n, n) self.close_rect = pygame.rect.Rect(self.w - 2 - n, 1, n, n)
self.body_rect = pygame.rect.Rect( self.grow_rect = pygame.rect.Rect(1, 1, n, n)
0, self.MINIMUM_HEIGHT + 1, self.body_rect = pygame.rect.Rect(
self.w - 1, self.h - self.MINIMUM_HEIGHT - 2) 0, self.MINIMUM_HEIGHT + 1,
self.w - 1, self.h - self.MINIMUM_HEIGHT - 2)
def draw(self):
'''Draw the viewer onto its surface.''' def draw(self):
Viewer.draw(self) '''Draw the viewer onto its surface.'''
if not self.resizing: Viewer.draw(self)
self.draw_menu() if not self.resizing:
self.draw_body() self.draw_menu()
self.draw_body()
def draw_menu(self):
# menu buttons def draw_menu(self):
pygame.draw.rect(self.surface, FOREGROUND, self.close_rect, 1) # menu buttons
pygame.draw.rect(self.surface, FOREGROUND, self.grow_rect, 1) pygame.draw.rect(self.surface, FOREGROUND, self.close_rect, 1)
pygame.draw.rect(self.surface, FOREGROUND, self.grow_rect, 1)
def draw_body(self):
self.surface.fill(self.bg, self.body_rect) def draw_body(self):
self.surface.fill(self.bg, self.body_rect)
def mouse_down(self, display, x, y, button):
Viewer.mouse_down(self, display, x, y, button) def mouse_down(self, display, x, y, button):
if y <= self.MINIMUM_HEIGHT: Viewer.mouse_down(self, display, x, y, button)
self.menu_click(display, x, y, button) if y <= self.MINIMUM_HEIGHT:
else: self.menu_click(display, x, y, button)
bx, by = self.body_rect.topleft else:
self.body_click(display, x - bx, y - by, button) bx, by = self.body_rect.topleft
self.body_click(display, x - bx, y - by, button)
def body_click(self, display, x, y, button):
if button == 1: def body_click(self, display, x, y, button):
self.draw_an_a(x, y) if button == 1:
self.draw_an_a(x, y)
def menu_click(self, display, x, y, button):
if button == 1: def menu_click(self, display, x, y, button):
self.resizing = 1 if button == 1:
elif button == 3: self.resizing = 1
if self.close_rect.collidepoint(x, y): elif button == 3:
display.close_viewer(self) if self.close_rect.collidepoint(x, y):
return True display.close_viewer(self)
elif self.grow_rect.collidepoint(x, y): return True
display.grow_viewer(self) elif self.grow_rect.collidepoint(x, y):
return True display.grow_viewer(self)
return True
def mouse_up(self, display, x, y, button):
def mouse_up(self, display, x, y, button):
if button == 1 and self.resizing:
if self.resizing == 2: if button == 1 and self.resizing:
self.resizing = 0 if self.resizing == 2:
self.draw() self.resizing = 0
display.done_resizing() self.draw()
self.resizing = 0 display.done_resizing()
return True self.resizing = 0
return True
def mouse_motion(self, display, x, y, rel_x, rel_y, button0, button1, button2):
if self.resizing and button0: def mouse_motion(self, display, x, y, rel_x, rel_y, button0, button1, button2):
self.resizing = 2 if self.resizing and button0:
display.change_viewer(self, rel_y, relative=True) self.resizing = 2
return True display.change_viewer(self, rel_y, relative=True)
else: return True
self.resizing = 0 else:
#self.draw_an_a(x, y) self.resizing = 0
#self.draw_an_a(x, y)
def key_up(self, display, key, mod):
if Viewer.key_up(self, display, key, mod): def key_up(self, display, key, mod):
return True if Viewer.key_up(self, display, key, mod):
return True
def draw_an_a(self, x, y):
# Draw a crude letter A. def draw_an_a(self, x, y):
lw, lh = 10, 14 # Draw a crude letter A.
try: surface = self.surface.subsurface((x - lw, y - lh, lw, lh)) lw, lh = 10, 14
except ValueError: return try: surface = self.surface.subsurface((x - lw, y - lh, lw, lh))
draw_a(surface, blend=1) except ValueError: return
draw_a(surface, blend=1)
class SomeViewer(MenuViewer):
class SomeViewer(MenuViewer):
def __init__(self, surface):
MenuViewer.__init__(self, surface) def __init__(self, surface):
MenuViewer.__init__(self, surface)
def resurface(self, surface):
MenuViewer.resurface(self, surface) def resurface(self, surface):
MenuViewer.resurface(self, surface)
def draw_menu(self):
MenuViewer.draw_menu(self) def draw_menu(self):
MenuViewer.draw_menu(self)
def draw_body(self):
pass def draw_body(self):
pass
def body_click(self, display, x, y, button):
pass def body_click(self, display, x, y, button):
pass
def menu_click(self, display, x, y, button):
if MenuViewer.menu_click(self, display, x, y, button): def menu_click(self, display, x, y, button):
return True if MenuViewer.menu_click(self, display, x, y, button):
return True
def mouse_up(self, display, x, y, button):
if MenuViewer.mouse_up(self, display, x, y, button): def mouse_up(self, display, x, y, button):
return True if MenuViewer.mouse_up(self, display, x, y, button):
return True
def mouse_motion(self, display, x, y, rel_x, rel_y, button0, button1, button2):
if MenuViewer.mouse_motion(self, display, x, y, rel_x, rel_y, def mouse_motion(self, display, x, y, rel_x, rel_y, button0, button1, button2):
button0, button1, button2): if MenuViewer.mouse_motion(self, display, x, y, rel_x, rel_y,
return True button0, button1, button2):
return True
def key_down(self, display, uch, key, mod):
try: def key_down(self, display, uch, key, mod):
print chr(key), try:
except ValueError: print(chr(key), end=' ')
pass except ValueError:
pass
# Note that Oberon book says that if you split at the exact top of a viewer
# it should close, and I think this implies the new viewer gets the old # Note that Oberon book says that if you split at the exact top of a viewer
# viewer's whole height. I haven't implemented that yet, so the edge-case # it should close, and I think this implies the new viewer gets the old
# in the code is broken by "intent" for now.. # viewer's whole height. I haven't implemented that yet, so the edge-case
# in the code is broken by "intent" for now..
def draw_a(surface, color=FOREGROUND, blend=False):
w, h = surface.get_width() - 2, surface.get_height() - 2 def draw_a(surface, color=FOREGROUND, blend=False):
pygame.draw.aalines(surface, color, False, ( w, h = surface.get_width() - 2, surface.get_height() - 2
(1, h), (w / 2, 1), (w, h), (1, h / 2) pygame.draw.aalines(surface, color, False, (
), blend) (1, h), (w / 2, 1), (w, h), (1, h / 2)
), blend)