syncscroll.py

import sublime, sublime_plugin

try:
    import _thread  # py3
except ImportError:
    import thread as _thread  # py2
import time

synch_scroll_running = False
synch_scroll_current_view_object = None

def updatePos(view):
	#print 'updatepos'
	view.settings().set('origPos',view.viewport_position())

def initialize(view):
	#print 'initialize'
	if not view.settings().has('syncScroll'):
		view.settings().set('syncScroll',False)
		#the add on change should be here, it's elsewhere for debug reasons
	updatePos(view)
	view.settings().clear_on_change('syncScroll') #for debug reasons
	view.settings().add_on_change('syncScroll', updateStatus) #when syncScroll is toggled, update status bar
	settings = sublime.load_settings('Sync View Scroll.sublime-settings')
	status_off = settings.get('status_off')
	if status_off:
		view.set_status('syncScroll', status_off)
def plugin_loaded():
	if not 'running_synch_scroll_loop' in globals():
		global running_synch_scroll_loop
		running_synch_scroll_loop = True
		_thread.start_new_thread(synch_scroll_loop, ())
	#on startup initialize every view
	print ("syncScroll starting")
	for window in sublime.windows():
		for view in window.views():
			initialize(view)
def synch_scroll_loop():
	while True:
		global synch_scroll_running
		if not synch_scroll_running:
			synch_scroll_running = True
			sublime.set_timeout(lambda: synch_scroll(), 0)
		time.sleep(0.08)
def synch_scroll():
	global synch_scroll_running
	global synch_scroll_current_view_object
	# print ("one timeout")
	current_view = synch_scroll_current_view_object
	if current_view is None or current_view.is_loading() or not current_view.settings().get('syncScroll'):
		synch_scroll_running = False
		return
	callingViewPosX, callingViewPosY = current_view.viewport_position()
	origCallingViewPosX, origCallingViewPosY = current_view.settings().get('origPos')
	# print ('modified. origCallingViewPos=', origCallingViewPosX, origCallingViewPosY, 'callingViewPos= ', callingViewPosX, callingViewPosY)
	if callingViewPosX != origCallingViewPosY or callingViewPosY != origCallingViewPosY: #and it moved vertically or horizontally
		# print ("it moved")
		for view in current_view.window().views():
			if view.settings().get('syncScroll') and view.id() != current_view.id(): #if view has syncScroll enabled AND we're not talking about the same view as view
				#we move view
				viewPosX, viewPosY = view.viewport_position()
				newViewPosX = viewPosX+callingViewPosX-origCallingViewPosX
				newViewPosY = viewPosY+callingViewPosY-origCallingViewPosY
				# print ("moving. viewPos= ",viewPosX,viewPosY," newViewPos= ",newViewPosX,newViewPosY)
				view.set_viewport_position((newViewPosX,newViewPosY), True) #move the other view
				updatePos(view)
		updatePos(current_view) #update original positions
	synch_scroll_running = False

def updateStatus():
	# print "updateStatus"
	settings = sublime.load_settings('Sync View Scroll.sublime-settings')
	for window in sublime.windows():
		for view in window.views():
			if view.settings().get('syncScroll'):
				status_on = settings.get('status_on')
				if status_on:
					view.set_status('syncScroll', status_on)
			else:
				status_off = settings.get('status_off')
				if status_off:
					view.set_status('syncScroll', status_off)
				else:
					view.erase_status('syncScroll')

class syncScrollListener(sublime_plugin.EventListener):
	def on_activated(self, view):
		global synch_scroll_current_view_object
		synch_scroll_current_view_object = view
		view.settings().set('origPos', view.viewport_position())
	def on_load(self,view):
		#on load add settings to a view
		# print ("on_load")
		initialize(view)
	def on_text_command(self, current_view, command_name, args):
		if current_view.settings().get('syncScroll') and command_name == 'move_to' and args['to'] in ['bof', 'eof']:
			for view in current_view.window().views():
				if view.settings().get('syncScroll') and view.id() != current_view.id():
					view.run_command(command_name, args)

class ToggleSyncScrollCommand(sublime_plugin.TextCommand):
	def run(self, edit):
		current_state = self.view.settings().get('syncScroll')
		self.view.settings().set('syncScroll',not current_state)
	def is_checked(self):
		if not self.view.settings().has('syncScroll'):
			initialize(self.view)
		# print ("current setting",self.view.settings().get('syncScroll'))
		return self.view.settings().get('syncScroll')