plotdevice/plotdevice/gui/document.py at main · plotdevice/plotdevice · GitHub

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# encoding: utf-8

import sys

import os

import re

import traceback

import random

import time

import objc

from io import open

from objc import super

from ..lib.cocoa import *

from .preferences import get_default

from .editor import OutputTextView, EditorView

from .widgets import DashboardController, ExportSheet

from .views import FullscreenWindow, FullscreenView

from ..run import Sandbox, encoded

from .. import DeviceError

from . import set_timeout

NSEventGestureAxisVertical = 2

class PlotDeviceDocument(NSDocument):

def init(self):

self.stationery = "TMPL:sketch" # untitled/example docs flag

self.source = None # string read in from file

self.source_enc = 'utf-8' # or the contents of a coding: comment

self.script = None # window controller

return super(PlotDeviceDocument,self).init()

def makeWindowControllers(self):

self.script = ScriptController.alloc().initWithWindowNibName_("PlotDeviceDocument")

if self.stationery:

self.script.setStationery_(self.stationery)

if os.path.exists(self.stationery) and not self.stationery.startswith('TMPL:'):

self.setDisplayName_(os.path.basename(self.stationery).replace('.pv',''))

self.script.synchronizeWindowTitleWithDocumentName()

elif self.source is not None:

self.script.setPath_source_(self.path, self.source)

self.addWindowController_(self.script)

@property

def path(self):

url = self.fileURL()

return url.path() if url else None

# Reading & writing the script file (and keeping track of its path)

def setFileURL_(self, url):

self.stationery = None

super(PlotDeviceDocument, self).setFileURL_(url)

# make sure the vm knows about saved/renamed files

if self.script and self.path:

self.script.path = self.path

def writeToURL_ofType_error_(self, url, tp, err):

path = url.fileSystemRepresentation()

# always use the same encoding we were read in with (even if they deleted the '# encoding:' line)

with open(path, 'w', encoding=self.source_enc) as f:

f.write(self.script._get_source())

return True, err

def readFromURL_ofType_error_(self, url, tp, err):

path = url.fileSystemRepresentation()

self.source_enc = encoded(path)

self.source = open(path, encoding=self.source_enc).read()

if self.script:

self.script.setPath_source_(self.path, self.source)

return True, err

# for debugging the editor:

def updateChangeCount_(self, chg):

# changes = {0:"NSChangeDone", 1:"NSChangeUndone", 2:"NSChangeCleared", 3:"NSChangeReadOtherContents", 4:"NSChangeAutosaved", 5:"NSChangeRedone", 256:"NSChangeDiscardable", }

# print changes[chg]

super(PlotDeviceDocument, self).updateChangeCount_(chg)

## Autosave & restoration on re-launch

@classmethod

def autosavesInPlace(self):

return get_default('autosave')

def encodeRestorableStateWithCoder_(self, coder):

super(PlotDeviceDocument, self).encodeRestorableStateWithCoder_(coder)

if self.stationery and not self.undoManager().canUndo():

coder.encodeObject_forKey_(self.stationery, "plotdevice:stationery")

def restoreStateWithCoder_(self, coder):

super(PlotDeviceDocument, self).restoreStateWithCoder_(coder)

self.stationery = coder.decodeObjectForKey_("plotdevice:stationery")

if self.stationery:

self.script.setStationery_(self.stationery)

## Explicit saves

def prepareSavePanel_(self, panel):

# saving modifications to .py files is fine, but if a Save As operation

# happens, restrict it to .pv files

panel.setRequiredFileType_("pv")

panel.setAccessoryView_(None)

return True

def presentedItemDidChange(self):

# reload the doc if an external editor modified the file

self.performSelectorOnMainThread_withObject_waitUntilDone_("_refresh", None, True)

def _refresh(self):

doc_mtime = self.fileModificationDate().timeIntervalSince1970()

file_mtime = os.path.getmtime(self.fileURL().fileSystemRepresentation())

if file_mtime > doc_mtime:

self.revertToContentsOfURL_ofType_error_(self.fileURL(), self.fileType(), None)

# `file's owner' in PlotDeviceDocument.xib

class ScriptController(NSWindowController):

# main document window

graphicsView = IBOutlet()

outputView = IBOutlet()

editorView = IBOutlet()

# auxiliary windows

dashboardController = IBOutlet()

exportSheet = IBOutlet()

# toolbar modes

imageToolbar = IBOutlet()

animToolbar = IBOutlet()

exportToolbar = IBOutlet()

statusView = IBOutlet()

statusViewItem = IBOutlet()

## Properties

# .path

@objc.python_method

def _get_path(self):

return self.vm.path

@objc.python_method

def _set_path(self, pth):

self.vm.path = pth

path = property(_get_path, _set_path)

# .source

def _get_source(self):

return self.editorView.source if self.editorView else self.vm.source

@objc.python_method

def _set_source(self, src):

self.vm.source = src

if self.editorView:

self.editorView.source = src

source = property(_get_source, _set_source)

## Initializers

def initWithWindowNibName_(self, nib):

self._init_state()

return super(ScriptController, self).initWithWindowNibName_(nib)

def _init_state(self):

self.vm = Sandbox(self)

self.animationTimer = None

self.offscreen = None

self.fullScreen = None

self.currentView = None

self.stationery = None

self.is_tab = False

def setPath_source_(self, path, source):

self.vm.path = path

self.vm.source = source

if self.editorView:

self.editorView.source = source

def setStationery_(self, tmpl):

is_untitled = tmpl.startswith('TMPL:')

is_example = os.path.exists(tmpl) and not is_untitled

if is_example:

self.source = open(tmpl, encoding='utf-8').read()

if self.document():

# when an example script is opened, setStatioenry is called before the

# ScriptController gets a reference to the document and the doc handles

# setting the title.

# when restored at launch, the stationery value doesn't get unpacked until

# after an untitled doc gets created. thus we have a self.document reference

# and should set the title to the example's name (rather than "Untitled")

self.document().setDisplayName_(os.path.basename(tmpl).replace('.pv',''))

self.synchronizeWindowTitleWithDocumentName()

elif is_untitled:

from plotdevice.util.ottobot import genTemplate

self.source = genTemplate(tmpl.split(':',1)[1])

self.is_tab = tmpl.endswith(':tab')

def awakeFromNib(self):

win = self.window()

win.setTabbingMode_(NSWindowTabbingModePreferred if self.is_tab else NSWindowTabbingModeAutomatic)

win.setPreferredBackingLocation_(NSWindowBackingLocationVideoMemory)

win.useOptimizedDrawing_(True)

# wire up the export-status widget in the title bar

self.statusViewItem.setView_(self.statusView)

self.setToolbarMode_('stop')

# sign up for autoresume on quit-and-relaunch (but only if this isn't console.py)

if self.editorView:

win.setRestorable_(True)

# always a reference to either the in-window view or a fullscreen view

self.currentView = self.graphicsView

# watch for changes in light/dark-mode and pass them along to subviews

from AppKit import NSKeyValueObservingOptionInitial

NSApp.addObserver_forKeyPath_options_context_(self,

"effectiveAppearance", NSKeyValueObservingOptionNew | NSKeyValueObservingOptionInitial, None

)

def observeValueForKeyPath_ofObject_change_context_(self, path, obj, change, context):

appearance = change.get('new', change.get('initial'))

self.graphicsView.updatePlaceholder(appearance)

if self.editorView:

self.editorView.superview().setDividerColor_(

NSColor.colorWithWhite_alpha_(1.0, 0.333) if 'Dark' in appearance.name() else NSColor.thinSplitViewDividerColor()

)

## WindowController duties

def windowDidLoad(self):

# the editor might not exist if we're being opened in console.py

if self.editorView:

# pass the editor a reference to the undomanager so it can sync up with the

# menus and the file's dirty-state

self.editorView._undo_mgr = self.document().undoManager()

# if the document was loaded from disk (rather than stationery/untitled), the

# setPath_Source_ call came before the editorview was loaded from the nib.

# now that the editor has woken up, we can populate it.

if self.vm.source:

self.editorView.source = self.vm.source

def encodeRestorableStateWithCoder_(self, coder):

# walk through editor's superviews to autosave the splitview positions

if self.editorView:

split_frames = []

it = self.editorView

while it.superview():

if type(it) is NSSplitView:

sub_frames = [NSStringFromRect(sub.frame()) for sub in it.subviews()]

split_frames.append(sub_frames)

if len(split_frames) == 2:

break

it = it.superview()

coder.encodeObject_forKey_(split_frames, "plotdevice:split_rects")

super(ScriptController, self).encodeRestorableStateWithCoder_(coder)

def restoreStateWithCoder_(self, coder):

# restore the splitview positions (if rects were autosaved)

split_frames = coder.decodeObjectForKey_("plotdevice:split_rects")

if split_frames:

it = self.editorView

while it.superview():

if type(it) is NSSplitView:

first, second = [NSRectFromString(s) for s in split_frames.pop(0)]

for sub, rect in zip(it.subviews(), [first,second]):

sub.setFrame_(rect)

if not split_frames:

break

it = it.superview()

super(ScriptController, self).restoreStateWithCoder_(coder)

## Window behavior

def windowDidResignKey_(self, note):

if self.editorView:

self.editorView.blur()

self.editorView.window().makeFirstResponder_(None)

def windowDidBecomeKey_(self, note):

if self.editorView:

self.editorView.window().makeFirstResponder_(self.editorView)

set_timeout(self.editorView, 'focus', 0.1)

def windowWillUseStandardFrame_defaultFrame_(self, win, rect):

container = self.graphicsView.superview().superview().superview().superview() # nssplitview or nsview

frame = win.frame()

current = frame.size

gworld = self.graphicsView.frame().size

scrollview = self.graphicsView.superview().superview().superview().frame().size

thumb_w = 1 if type(container) is NSSplitView else 0 # no thumb when running from command line

gfx_share = scrollview.width / (current.width-thumb_w)

best_w = round(gworld.width/gfx_share) + thumb_w

best_h = gworld.height + 38

merged = NSIntersectionRect(rect, (rect.origin, (best_w, best_h)))

if merged.size.width<300 or merged.size.height<222:

# whatever appkit code makes the decision to zoom does crazy stuff if you pass it a

# standard-frame of a fixed min size. no clue why it bobbles the height. the real ‘solution’

# is to shim into the nswindow zoom: method. might also be the only place to disable animated

# frame resize (which doesn't really fit with the graphicsview resize behavior)

return frame

center = dict(x=NSMidX(frame), y=NSMidY(frame))

merged.origin.x = round(center['x'] - merged.size.width/2.0)

merged.origin.y = round(center['y'] - merged.size.height/2.0)

return merged

def windowShouldZoom_toFrame_(self, win, rect):

# catch the occasions where we don't modify the size and cancel the zoom

return win.frame().size != rect.size

def windowWillClose_(self, note):

self.stopScript()

# break some retain cycles on our way out

self.vm._cleanup()

if self.editorView:

self.editorView._cleanup()

self.outputView._cleanup()

self.dashboardController.shutdown()

self.graphicsView = self.outputView = self.editorView = self.statusView = None

self.dashboardController = self.exportSheet = self.vm = None

# stop tracking appearance changes

NSApp.removeObserver_forKeyPath_(self, "effectiveAppearance")

def shouldCloseDocument(self):

return True

def splitView_shouldAdjustSizeOfSubview_(self, splitview, subview):

# keep the size of the editor fixed and adjust the graphics view on resize

return type(subview) is not NSSplitView

# Toolbar state

def setToolbarMode_(self, mode):

if self.window():

if mode == 'export':

toolbar = self.exportToolbar

elif not self.vm.animated:

toolbar = self.imageToolbar

else:

toolbar = self.animToolbar

for item in toolbar.items():

if item.itemIdentifier() == 'run-script':

action = dict(play='pause', pause='forward.frame', stop='play')[mode]

caption = dict(play='Pause', pause='Resume', stop='Run Script')[mode]

item.setImage_(NSImage.imageWithSystemSymbolName_accessibilityDescription_('%s.fill'%action, caption))

self.window().setToolbar_(toolbar)

toolbar.validateVisibleItems()

def validateToolbarItem_(self, item):

ident = item.itemIdentifier()

anim = self.animationTimer is not None

if ident == 'stop-script':

return anim

if ident == 'export':

return not anim or not self.animationTimer.isValid()

return True

# Running the script in the main window

@IBAction

def runScript_(self, sender):

if self.vm.session:

return NSBeep()

# always run from beginning for cmd-r, but play/pause for toolbar clicks

if self.animationTimer and not isinstance(sender, NSMenuItem):

if self.animationTimer.isValid():

self.animationTimer.invalidate()

else:

self.animationTimer = set_timeout(self, 'step', 1.0/self.vm.speed, repeat=True)

self.setToolbarMode_("play" if self.animationTimer.isValid() else "pause")

else:

self.setToolbarMode_("play")

self.runScript()

@IBAction

def runFullscreen_(self, sender):

# listens for cmd-shift-r

if not self.fullScreen:

# create a full-screen window to draw in

self.stopScript()

self.currentView = FullscreenView.alloc().init()

self.currentView.canvas = None

fullRect = NSScreen.mainScreen().frame()

if not self.offscreen:

self.offscreen = FullscreenWindow.alloc().initWithRect_(fullRect)

self.fullScreen = self.offscreen

self.fullScreen.setContentView_(self.currentView)

self.fullScreen.makeKeyAndOrderFront_(self)

self.fullScreen.makeFirstResponder_(self.currentView)

NSMenu.setMenuBarVisible_(False)

NSCursor.hide()

self.runScript()

def runScript(self):

"""Compile the script and run its global scope.

For non-animated scripts, this is a whole run since all of their drawing and control

flow is at the module level. For animated scripts, this is just a first pass to populate

the namespace with the script's variables and particularly the setup/draw/stop functions.

If a draw() function is defined, we'll start the animationTimer which will repeatedly

call self.invoke('draw') until cancelled by the user.

"""

# ihalt any animation that was already running

if self.animationTimer:

self.animationTimer.invalidate()

self.animationTimer = None

# clear out any key/mousedown state from previous run

self.reset_ui()

# clear the previous run's output

if (self.outputView):

self.editorView.clearErrors()

self.outputView.clear(timestamp=True)

# Compile the script and run its global scope

self.vm.source = self.source

success = self.invoke(None)

# Display the dashboard if the var() command was called

self.vm.params = self.vm.vars

self.dashboardController.updateInterface()

# Run the setup routine (if it exists)

if success:

success = self.invoke("setup")

if not success or not self.vm.animated:

# don't mess with the gui window-state if running in fullscreen until the

# user explicitly cancels with esc or cmd-period

if success and not self.fullScreen:

self.stopScript()

return # either way, the run is complete

# Check whether we are dealing with animation

if self.vm.animated:

if not self.vm.crashed:

# calling speed(0) just draws the first frame, so bail out before repeating

if self.vm.speed<=0:

return self.step()

# shift the focus so we can catch mouse events in the canvas

window = self.currentView.window()

window.makeFirstResponder_(self.currentView)

# Start the timer

self.animationTimer = set_timeout(self, 'step', 1.0/self.vm.speed, repeat=True)

# enable the stop button in the toolbar

self.setToolbarMode_("play")

def step(self):

"""Keep calling the script's draw method until an error occurs or the animation complete."""

ok = self.invoke("draw")

if not ok:

self.stopScript()

# if not hasattr(self, '_step_times'):

# self._step_times = []

# self._step_times.append(time.time())

# if len(self._step_times) == 10:

# fps = sum([1.0/(t1-t0) for t0, t1 in zip(self._step_times, self._step_times[1:])]) / len(self._step_times)

# print(fps)

# self._step_times = []

@objc.python_method

def invoke(self, method):

"""Call a method defined in the script's global namespace and update the ui appropriately

If `method` exists in the namespace, it is called. If it's undefined, the invocation

is ignored and no error is raised. If the method is None, the script's global scope

will be run, but no additional methods will be called.

Returns a boolean flagging whether the call was successful.

"""

# Run the script

self.vm.state = self._ui_state()

result = self.vm.run(method=method)

self.echo(result.output)

# only update the view during animations after the script's draw()

# method is called (otherwise a blank canvas flashes on the screen

# during the compilation and setup() calls.

redraw = not self.vm.animated or method=='draw'

# Display the output of the script

if result.ok and redraw:

try:

self.currentView.setCanvas(self.vm.canvas)

except DeviceError as e:

return self.crash()

if not result.ok and method in (None, "setup"):

self.stopScript()

if result.ok=='HALTED':

self.stopScript()

return result.ok

@objc.python_method

def echo(self, output):

"""Pass a list of (isStdErr, txt) tuples to the output window"""

for isErr, data in output:

self.outputView.append(data, stream='err' if isErr else 'message')

def reset_ui(self):

self.currentView.mousedown = None

self.currentView.keydown = None

self.currentView.key = None

self.currentView.keycode = None

def _ui_state(self):

"""Collect mouse & keyboard events to be spliced into the script's namespace"""

# Set the mouse position

window = self.currentView.window()

pt = window.mouseLocationOutsideOfEventStream()

mx, my = window.contentView().convertPoint_toView_(pt, self.currentView)

# Hack: mouse coordinates are flipped vertically in FullscreenView.

# This flips them back.

if isinstance(self.currentView, FullscreenView):

my = self.currentView.bounds()[1][1] - my

if self.fullScreen is None:

mx /= self.currentView.zoom

my /= self.currentView.zoom

return dict(

# UI events

MOUSEX=mx, MOUSEY=my,

mousedown=self.currentView.mousedown,

keydown=self.currentView.keydown,

key=self.currentView.key,

keycode=self.currentView.keycode,

# scrollwheel=self.currentView.scrollwheel,

# wheeldelta=self.currentView.wheeldelta,

)

# Exporting to file(s)

@IBAction

def exportAsImage_(self, sender):

if self.vm.session:

return NSBeep()

self.exportSheet.beginExport('image')

@IBAction

def exportAsMovie_(self, sender):

if self.vm.session:

return NSBeep()

self.exportSheet.beginExport('movie')

@objc.python_method

def exportInit(self, kind, fname, opts):

"""Begin actual export (invoked by self.exportSheet unless sheet was cancelled)"""

if self.animationTimer is not None:

self.stopScript()

# if this is a single-image export and the canvas already contains some grobs,

# write it out synchronously rather than starting up an export session

if kind=='image' and opts['last']==opts['first'] and list(self.vm.canvas):

img_data = self.vm.canvas._getImageData(opts['format'], opts['zoom'], opts['cmyk'])

img_data.writeToFile_atomically_(fname, True)

self.exportStatus('complete')

return

# if we're exporting multiple frames, give some ui feedback

if self.outputView:

self.outputView.clear(timestamp=True)

# replace the toolbar buttons with a progress indicator

self.setToolbarMode_("export")

if self.statusView:

self.statusView.beginExport()

# let the Sandbox take over

self.vm.source = self.source

self.vm.export(kind, fname, opts)

@objc.python_method

def exportFrame(self, status, canvas=None):

"""Handle a newly rendered frame (and any console output it generated)"""

if status.output:

# print any console messages

self.echo(status.output)

if canvas and self.window() and self.vm._meta.frame % 2:

# blit the canvas to the graphics view ^ (but only every other frame)

self.currentView.setCanvas(canvas)

@objc.python_method

def exportProgress(self, written, total, cancelled):

"""Update the progress meter in the StatusView (invoked by self.vm.session)"""

if self.statusView:

self.statusView.updateExport_total_(written, total)

@objc.python_method

def exportStatus(self, event):

"""Handle an export-lifecycle event (invoked by self.vm.session)"""

if self.statusView:

# give ui feedback for export state

if event=='cancelled': self.statusView.finishExport()

elif event=='complete': self.statusView.endExport()

if event=='complete':

# shut down the export ui

self.stopScript()

# Interrupting the run

@IBAction

def stopScript_(self, sender=None):

# catch command-period

if self.vm.session:

self.vm.session.cancel()

else:

self.stopScript()

def cancelOperation_(self, sender):

# catch the escape key

self.stopScript_(sender)

def stopScript(self):

# if we're currently animating, finish up the draw loop

if self.animationTimer:

self.animationTimer.invalidate()

self.animationTimer = None

# run stop() method if the script defines one

result = self.vm.stop()

self.echo(result.output)

# re-enable the play button

self.setToolbarMode_("stop")

# relay any errors to the text panes (if we're in the app)

if self.editorView:

self.editorView.report(self.vm.crashed, self.vm.path or "<Untitled>")

self.outputView.report(self.vm.crashed, self.vm.namespace.get('FRAME') if self.vm.animated else None)

# return from fullscreen (if applicable)

needs_focus = False

if self.fullScreen is not None:

# copy the final frame back to the window's view

self.graphicsView.setCanvas(self.vm.canvas)

self.currentView = self.graphicsView

# close the fullscreen window

NSMenu.setMenuBarVisible_(True)

self.fullScreen.orderOut_(self)

self.fullScreen = None

NSCursor.unhide()

needs_focus = True

# try to send the cursor to the editor

if self.editorView:

self.editorView.focus()

elif self.graphicsView:

self.graphicsView.window().makeFirstResponder_(self.graphicsView)

# bring the window forward (to recover from fullscreen mode) and re-cache the graphics

if needs_focus:

# note that graphicsView is nulled out in self.close_ before we're called.

# otherwise the makeKey will cause a double-flicker before the window disappears

focus = self.editorView or self.graphicsView

focus.window().makeKeyAndOrderFront_(self)

def crash(self):

# called by the graphicsview when a grob blows up with unexpected input

errtxt = self.vm.die()

self.echo([(True, errtxt)])

self.stopScript()

# Pasteboards

@IBAction

def copyImageAsPDF_(self, sender):

pboard = NSPasteboard.generalPasteboard()

# graphicsView implements the pboard delegate method to provide the data

pboard.declareTypes_owner_([

NSPasteboardTypePDF, NSPasteboardTypeTIFF,"com.adobe.encapsulated-postscript"

], self.graphicsView)

# Zoom commands, forwarding to the graphics view.

@IBAction

def zoomIn_(self, sender):

if self.fullScreen is not None: return

self.graphicsView.zoomIn_(sender)

@IBAction

def zoomOut_(self, sender):

if self.fullScreen is not None: return

self.graphicsView.zoomOut_(sender)

@IBAction

def zoomToTag_(self, sender):

if self.fullScreen is not None: return

self.graphicsView.zoomTo_(sender.tag() / 100.0)

@IBAction

def zoomToFit_(self, sender):

if self.fullScreen is not None: return

self.graphicsView.zoomToFit_(sender)

# separate document class for public.python-source files

class PythonScriptDocument(PlotDeviceDocument):

pass

def errorAlert(msgText, infoText):

# Force NSApp initialisation.

NSApplication.sharedApplication().activateIgnoringOtherApps_(0)

alert = NSAlert.alloc().init()

alert.setMessageText_(msgText)

alert.setInformativeText_(infoText)

alert.setAlertStyle_(NSCriticalAlertStyle)

btn = alert.addButtonWithTitle_("OK")

return alert.runModal()

plotdevice/plotdevice/gui/document.py at main · plotdevice/plotdevice · GitHub

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