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# -*- coding: utf-8 -*-
# state.py
# This file is part of Oqapy serie 3
#
# Author: Vincent Vande Vyvre <vincent.vandevyvre@oqapy.eu>
# Home: http://www.oqapy.eu
# Copyright: 2014-2018 Vincent Vande Vyvre
# Licence: GPL3
#
# Define the context of the application
import threading
import logging
lgg = logging.getLogger(__name__)
from PyQt5.QtCore import QObject, Qt, QCoreApplication, pyqtSignal, QSize
class State(QObject):
_instance = None
_states = ['empty', 'viewing', 'sorting', 'fullscreen', 'filtering',
'raw_viewing', 'multi_viewing']
stateChanged = pyqtSignal(int)
def __new__(cls, *args, **kwargs):
if cls._instance is None:
cls._instance = super(State, cls).__new__(cls, *args, **kwargs)
return cls._instance
def __init__(self, core):
super().__init__()
self.core = core
self.ui = core.ui
self.statusbar = core.ui.statusbar
self.toolbar = core.ui.toolbar
self.toolpanel = core.ui.toolpanel
self.viewers = self.ui.stackedviews
self.trailers = self.ui.stackedtrailers
self.context = 0
self.old_state = 0
self.dock_visibility = self.toolpanel.isVisible()
self.trailer_visibility = False
self.filter_preview = False
self.is_dual_screen = False
@property
def current_viewer(self):
return self.viewers.viewing_area
def set_current_state(self, state, force=False):
"""Sets the current state.
Args:
state -- index of the state;
0 No viewing, empty list of images
1 Mode viewing
2 Mode sorting
3 Mode full screen
4 Mode filtering
5 Mode RAW image edition
6 Mode multi views
force -- if true reset the current state, needed at startup
"""
lgg.info("Set current state: %s - %s" %(state, self._states[state]))
if state == self.context and not force:
return
if self.context == 5 and state != 6:
self.close_raw_editing()
self.old_state = self.context
if not state:
self.set_no_images_state()
elif state == 1:
self.set_viewing_state()
elif state == 2:
self.set_sorting_state()
elif state == 3:
self.set_full_screen_state()
elif state == 4:
self.set_filtering_state(True)
elif state == 5:
self.set_raw_viewing_state()
elif state == 6:
self.set_multiviewing_state()
self.context = state
self.core.globalmenu.set_context(self.context)
def set_no_images_state(self):
lgg.info("Close source folder")
self.trailers.clean_all()
self.trailers.hide()
self.toolbar.on_state_changed(0)
self.viewers.on_state_changed(0)
self.toolpanel.set_empty_state()
self.statusbar.set_current_mode(0)
self.viewers.viewing_area.clear()
self.viewers.viewing_area.set_background()
QCoreApplication.processEvents()
def set_viewing_state(self):
"""Change to the viewing state.
"""
lgg.info('Set viewing state')
self.viewers.move_viewing_area(0)
self.viewers.setCurrentIndex(0)
self.trailers.setCurrentIndex(0)
self.show_trailer(self.trailer_visibility)
self.toolbar.on_state_changed(1)
self.statusbar.set_current_mode(1)
self.set_target_bar(False)
self.toolpanel.enable_all_toolboxes(True)
def set_sorting_state(self):
"""Change to the sorting mode.
"""
lgg.info('Set sorting state')
self.viewers.move_viewing_area(1)
self.viewers.setCurrentIndex(1)
self.trailers.setCurrentIndex(0)
self.show_trailer(self.trailer_visibility)
self.statusbar.set_current_mode(2)
self.set_target_bar(True)
def set_full_screen_state(self):
"""Change to the full screen view.
"""
self.old_state = self.context
if not self.old_state in (1, 5):
# Need to change to viewing state before
self.set_viewing_state()
lgg.info('Set full screen state, old state: %s' % self.old_state)
self.set_widgets(False)
self.request_scrollBar(False)
self.ui.showFullScreen()
QCoreApplication.processEvents()
self.current_viewer.setFocus(True)
threading.Timer(0.2, self.fit_view).start()
def exit_fullscreen(self):
"""Back from full screen mode
"""
lgg.info('Exit full screen state, old state: %s' % self.old_state)
self.ui.showNormal()
self.set_widgets(True)
QCoreApplication.processEvents()
if self.old_state == 2:
self.set_sorting_state()
self.context = 2
elif self.old_state == 5:
self.core.set_raw_files_viewing()
self.context = 5
else:
self.context = 1
self.core.globalmenu.set_context(self.context)
self.statusbar.set_current_mode(self.context)
threading.Timer(0.2, self.fit_view).start()
def set_filtering_state(self, state):
"""Sets or cancel the filtering state.
Args:
state -- boolean
"""
self.enable_navigation_button(not state)
if not state:
lgg.info('Exit filtering state, old state: %s', self.old_state)
self.viewers.viewing_header.set_filtered_mode(False)
self.set_current_state(self.old_state, True)
else:
lgg.info('Set filtering state, current state: %s', self.context)
self.old_state = self.context
self.viewers.viewing_header.set_filtered_mode(True)
def set_raw_viewing_state(self):
lgg.info('Set raw editing state')
self.old_state = self.context
self.trailer_visibility = self.trailers.isVisible()
if self.context == 2:
self.viewers.move_viewing_area(0)
self.viewers.setCurrentIndex(0)
self.set_target_bar(False)
self.trailers.setCurrentIndex(1)
self.enable_tool_boxes(False)
self.viewers.set_raw_header(True)
self.toolpanel.set_raw_page_enabled(True)
self.toolbar.on_state_changed(5)
def close_raw_editing(self):
lgg.info('Close raw editing state')
self.core.rawviewer.close_rawfiles_viewing()
self.enable_tool_boxes(True)
self.toolpanel.raw_inquiries.clear()
self.toolpanel.set_raw_page_enabled(False)
self.core.trailer.is_raw_viewing = False
self.core.trailer.on_trailer_completed()
self.viewers.set_raw_header(False)
self.toolbar.widget.multiviews_state_btn.setEnabled(True)
# Avoid perpetual movement
self.context = 0
self.set_current_state(self.old_state)
def set_raw_only(self, raw_only):
self.toolpanel.set_raw_page_enabled(True)
self.statusbar.set_raw_only(raw_only)
self.core.globalmenu.set_raw_only(raw_only)
if raw_only:
self.enable_navigation_button(True)
def set_multiviewing_state(self):
lgg.info('Set multi viewing state')
self.old_state = self.context
if self.context == 2:
self.viewers.set_sortingtab_multiviewing_mode()
else:
self.viewers.setCurrentIndex(3)
self.trailer_visibility = self.trailers.isVisible()
#self.set_target_bar(False)
self.toolbar.on_state_changed(6)
self.toolpanel.set_multiviewing_state()
def close_multiviewing(self):
lgg.info('Close multi viewing state, old state: %s' % self.old_state)
self.enable_tool_boxes(True)
self.core.multiviewing.clean_view()
if self.old_state == 2:
self.viewers.unset_sortingtab_multiviewing_mode()
def enable_tool_boxes(self, enable):
self.toolpanel.resize_bx.setEnabled(enable)
self.toolpanel.crop_bx.setEnabled(enable)
self.toolpanel.straighten_bx.setEnabled(enable)
self.toolpanel.historic_bx.setEnabled(enable)
self.toolpanel.contrast_bx.setEnabled(enable)
self.toolpanel.stretching_bx.setEnabled(enable)
self.toolpanel.denoising_bx.setEnabled(enable)
self.toolpanel.grey_map_bx.setEnabled(enable)
self.toolpanel.toning_bx.setEnabled(enable)
self.toolpanel.laplace_bx.setEnabled(enable)
def close_source_folder(self):
if self.context == 6:
self.close_multiviewing()
self.set_no_images_state()
def show_trailer(self, state=None):
"""Show - hide the trailer.
Args:
state -- if None, the old state is used, if True, the trailer is shown
otherwise it is hidden
"""
if self.context == 4:
self.show_raw_trailer(state)
return
lgg.info('Show trailer state: %s current: %s'
% (state, self.context))
if state is None:
state = not self.trailers.isVisible()
self.trailers.setVisible(state)
def set_target_bar(self, visible):
for i in range(self.core.cfg.get(('sorting', 'number'))):
self.ui.targetarea.targets_buttons[i].setVisible(visible)
def set_widgets(self, b):
"""Hide or show widgets when set or unset the full screen mode.
Args:
b -- True or False
"""
self.toolpanel.setVisible(b)
self.statusbar.widget.setVisible(b)
self.toolbar.widget.setVisible(b)
self.viewers.viewing_header.setVisible(b)
if b:
b = self.trailer_visibility
self.trailers.setVisible(b)
def enable_navigation_button(self, mode):
"""Enables the navigation and rotation buttons.
Args:
mode -- boolean, if True the buttons are enabled
"""
self.toolbar.activate_navigation_widgets(mode)
def freeze_tool_boxes(self, caller, freeze=True):
lgg.info('Freeze tool boxes, caller: %s' %(caller))
boxes = self.toolpanel.get_tool_boxes()
if caller is not None:
caller = caller.parent()
for box in boxes:
if box != caller:
box.setEnabled(not freeze)
def disable_undo_buttons(self, tool):
lgg.info('Disable cancel buttons, caller: {0}'.format(tool))
# Disable all undo buttons
boxes = self.toolpanel.get_tool_boxes()
for box in boxes:
try:
widget = box.layout.itemAt(1).widget()
except AttributeError:
# Case of box is splitter
continue
try:
widget.cancel_btn.setEnabled(False)
except AttributeError:
# No cancel button
continue
# Enable undo button for the last change
if tool is not None:
if hasattr(tool, "cancel_btn"):
# old style tool box
tool.cancel_btn.setEnabled(True)
elif hasattr(tool, "widget"):
# new style tool box
tool.widget.cancel_btn.setEnabled(True)
def enable_raw_tools(self, enable):
pass
def request_scrollBar(self, b=None):
"""Show - hide scrollBars.
Args:
b -- boolean
"""
if b is None:
b = self.show_scrollbars
if b:
self.current_viewer.setVerticalScrollBarPolicy(Qt.ScrollBarAsNeeded)
self.current_viewer.setHorizontalScrollBarPolicy(Qt.ScrollBarAsNeeded)
else:
self.current_viewer.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.current_viewer.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.show_scrollbars = b
def fit_view(self):
"""Fit the current image to the viewer size.
"""
# We can't call directly the function because we are into a thread
self.toolbar.widget.zoom_tools.zoom_fit_btn.click()
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