MyPaint - Bugs: bug #20400, [GTK] ValueError: invalid flag... [Gna!]

MyPaint - Bugs: bug #20400, [GTK] ValueError: invalid flag...

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bug #20400: [GTK] ValueError: invalid flag value: 0

Submitted by:	Ryan Schmidt <ryandesign>
Submitted on:	Wed 02 Jan 2013 06:42:47 PM UTC

Severity:	3 - Normal	Priority:	5 - Normal
Status:	Invalid	Privacy:	Public
Assigned to:	None	Open/Closed:	Closed
Release:	1.1.0	Planned Release:	None
Operating System:	OS X 10.8

( Jump to the original submission)

Sat 05 Jan 2013 07:33:22 PM UTC, comment #8: Ok, then closing this issue. Thanks for quick and thorough follow-up and your work on MyPaint in macports!	Jon Nordby <jonnor>
Sat 05 Jan 2013 05:34:53 PM UTC, comment #7: This is the pygobject commit that removed the "invalid flag value" error: http://git.gnome.org/browse/pygobject/commit/gobject/pygflags.c?h=pygobject-2-28&id=eb0e179bff167303db1c20412f4bc9c8baa94582 This is the ticket that commit purportedly resolved: https://bugzilla.gnome.org/show_bug.cgi?id=642607	Ryan Schmidt <ryandesign>
Sat 05 Jan 2013 05:25:04 PM UTC, comment #6: I can now confirm that the "invalid flag value" error comes from py-gobject. We were running py-gobject 2.26.0 in MacPorts. Updating to 2.28.6 fixes that error. I have requested py-gobject in MacPorts be updated: https://trac.macports.org/ticket/37538 At this point if I open MyPaint I still get "local variable 'modifiers' referenced before assignment". If I move ~/.mypaint aside and let it be recreated, there is no longer an error. If I restore ~/.mypaint from my backups from before I started working on the MyPaint 1.1.0 update, and then open MyPaint with py-gobject 2.28.6 installed, MyPaint opens without error. So I think I can conclude that encountering the "invalid flag value" error with py-gobject 2.26.0 corrupted the settings somehow. So as long as I wait until the update to py-gobject to 2.28.6 is published before I publish the MyPaint 1.1.0 update everything should be fine.	Ryan Schmidt <ryandesign>
Sat 05 Jan 2013 12:55:43 PM UTC, comment #5: Seems like a GTK/pyGTK issue to be, but maybe we can implement a workaround?	Jon Nordby <jonnor>
Fri 04 Jan 2013 03:24:14 PM UTC, comment #4: Yes, it's pygtk 2.24.0. $ python2.7 Python 2.7.3 (default, Oct 22 2012, 21:18:41) [GCC 4.2.1 Compatible Apple Clang 4.1 ((tags/Apple/clang-421.11.66))] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> import gtk >>> from gtk import gdk >>> gdk.ModifierType(gdk.MOD1_MASK) <flags GDK_MOD1_MASK of type GdkModifierType> >>> gtk.accelerator_name(0, gdk.ModifierType(gdk.MOD1_MASK)) '<Alt>' >>> gtk.accelerator_name(67, gdk.ModifierType(gdk.MODIFIER_MASK)) '<Release><Primary><Shift><Alt><Mod2><Mod3><Mod4><Mod5><Meta><Hyper><Super>c' >>> gtk.accelerator_name(67, gdk.ModifierType(0)) Traceback (most recent call last): File "<stdin>", line 1, in <module> ValueError: invalid flag value: 0 >>> gdk.ModifierType(0) Traceback (most recent call last): File "<stdin>", line 1, in <module> ValueError: invalid flag value: 0 >>> $	Ryan Schmidt <ryandesign>
Fri 04 Jan 2013 03:18:51 PM UTC, comment #3: Also >>> gdk.ModifierType(0) <flags 0 of type GdkModifierType> >>> directly if you could please - I think that's the zero in question.	Andrew Chadwick <achadwick>
Fri 04 Jan 2013 03:17:31 PM UTC, comment #2: That's two errors, but the second is caused by the first. For the original one, what version of PyGTK are you running? This should work fine with 2.24.0, and you should be able to do all of $ python >>> import gtk >>> from gtk import gdk >>> gdk.ModifierType(gdk.MOD1_MASK) <flags GDK_MOD1_MASK of type GdkModifierType> >>> gtk.accelerator_name(0, gdk.ModifierType(gdk.MOD1_MASK)) '<Alt>' >>> gtk.accelerator_name(67, gdk.ModifierType(gdk.MODIFIER_MASK)) '<Release><Primary><Shift><Alt><Mod2><Mod3><Mod4><Mod5><Meta><Hyper><Super>c' >>> gtk.accelerator_name(67, gdk.ModifierType(0)) >>> without problems. Let me know if and where any of the >>>s fail :)	Andrew Chadwick <achadwick>
Wed 02 Jan 2013 06:54:47 PM UTC, comment #1: Now the error has changed to: Traceback (most recent call last): File "/opt/local/share/mypaint/gui/application.py", line 190, at_application_start(*junk=()) self.apply_settings() if not self.pressure_devices: variables: {'self.apply_settings': ('local', <bound method Application.apply_settings of <gui.application.Application instance at 0x10f316440>>)} File "/opt/local/share/mypaint/gui/application.py", line 214, apply_settings(self=<gui.application.Application instance>) self.update_input_devices() self.update_button_mapping() prefs_win = self.layout_manager.get_widget_by_role('preferencesWindow') variables: {'self.update_button_mapping': ('local', <bound method Application.update_button_mapping of <gui.application.Application instance at 0x10f316440>>)} File "/opt/local/share/mypaint/gui/application.py", line 377, update_button_mapping(self=<gui.application.Application instance>) def update_button_mapping(self): self.button_mapping.update(self.preferences["input.button_mapping"]) variables: {'self.button_mapping.update': ('local', <bound method ButtonMapping.update of <gui.buttonmap.ButtonMapping instance at 0x10f035e60>>), 'self.preferences': ('local', {'frame.color_rgba': [0.12, 0.12, 0.12, 0.92], 'view.high_quality_zoom': True, 'ui.feedback.scale': True, 'ui.feedback.last_pos': False, u'colors.current': '#d63434', 'brushmanager.selected_groups': [u'Deevad'], 'ui.toolbar_items': {u'toolbar1_file': False, u'toolbar1_view_modes': False, u'toolbar1_subwindows': True, u'toolbar1_edit': True, u'toolbar1_blendmodes': False, u'toolbar1_view_manips': False, u'toolbar1_view_resets': False, u'toolbar1_scrap': False, u'toolbar1_linemodes': False, u'toolbar1_view': False}, 'input.button_mapping': {}, 'view.default_zoom': 1.0, 'misc.context_restores_color': True, u'input.button2_ctrl_action': u'zoom_canvas', u'input.button1_ctrl_action': u'ColorPickerPopup', 'ui.parts': {u'main_toolbar': True, u'menubar': False}, 'ui.hide_toolbar_in_fullscreen': True, u'input.button3_action': u'ColorHistoryPopup', u'colorhistory.colors': [[0.09580626259483105, 0.8111987583031424, 0.8107095734585523], [0.22678843446592067, 0.992483630872682, 0.4827620766400553], [0.4709160858456718, 0.12227248251027101, 0.8370012768261346], [1.0, 1.0, 1.0], [0.0, 0.0, 0.0]], 'input.device_mode': u'screen', u'input.button2_shift_action': u'rotate_canvas', 'layout.window_positions': {'brushSelectionWindow': {u'h': 350, u'sbindex': 2, u'floating': True, u'w': 250, u'y': 378, u'x': 1090, u'sbheight': 350, u'hidden': True}, 'inputTestWindow': {}, 'brushSettingsWindow': {u'y': -128, u'h': 300, u'w': 300, u'x': -460}, 'colorWindow': {u'hidden': True, u'h': 300, u'sbindex': 0, u'w': 250, u'y': 125, u'x': -100, u'floating': True, u'sbheight': 300}, 'layersWindow': {u'h': 200, u'sbindex': 3, u'floating': True, u'w': 200, u'y': -150, u'x': -460, u'sbheight': 200, u'hidden': True}, 'backgroundWindow': {}, 'preferencesWindow': {}, 'scratchWindow': {u'h': 250, u'sbindex': 4, u'floating': True, u'w': 300, u'y': 125, u'x': -555, u'sbheight': 250, u'hidden': True}, 'frameWindow': {}, 'main-window': {u'y': 32, u'h': 746, u'w': 1340, u'sbwidth': 250, u'x': 50}}, u'linemode.exit_pressure': 0.30000000000000004, 'ui.hide_subwindows_in_fullscreen': True, u'linemode.entry_pressure': 0.30000000000000004, u'input.enable_history_popup': True, u'colors.history': [u'#336699', u'#44aa66', u'#aa6633', u'#292929', u'#d63434'], 'saving.scrap_prefix': u'~/MyPaint/scrap', 'ui.hide_menubar_in_fullscreen': True, u'input.button3_shift_action': u'no_action', 'input.global_pressure_mapping': [[0.0, 1.0], [1.0, 0.0]], 'saving.default_format': u'openraster', 'ui.feedback.symmetry': True, 'brushmanager.selected_brush': u'deevad/ballpen', u'input.button3_ctrl_action': u'no_action', u'input.button2_action': u'pan_canvas', u'input.button1_shift_action': u'straight_line', 'scratchpad.last_opened_scratchpad': u'/Users/rschmidt/.mypaint/scratchpads/autosave.ora'})} File "/opt/local/share/mypaint/gui/buttonmap.py", line 114, update(self=<gui.buttonmap.ButtonMapping instance>, mapping={}) self._mapping[modifiers][button] = action_name self._modifiers.append((modifiers, button, action_name)) variables: {'self._modifiers': ('local', []), 'button': (None, []), 'modifiers': (None, []), 'action_name': (None, [])} UnboundLocalError: local variable 'modifiers' referenced before assignment	Ryan Schmidt <ryandesign>
Wed 02 Jan 2013 06:42:47 PM UTC, original submission: Hello, I'm the maintainer of MyPaint in MacPorts. Having braved the build system and gotten MyPaint 1.1.0 to build and install, it runs, but displays this error every time I start it: A programming error has been detected. It probably isn't fatal, but the details should be reported to the developers nonetheless. Clicking the "Details..." disclosure triangle produces this text: Traceback (most recent call last): File "/opt/local/share/mypaint/gui/application.py", line 190, at_application_start(junk=()) self.apply_settings() if not self.pressure_devices: variables: {'self.apply_settings': ('local', <bound method Application.apply_settings of <gui.application.Application instance at 0x10e308c20>>)} File "/opt/local/share/mypaint/gui/application.py", line 215, apply_settings(self=<gui.application.Application instance>) self.update_button_mapping() prefs_win = self.layout_manager.get_widget_by_role('preferencesWindow') prefs_win.update_ui() variables: {'self.layout_manager.get_widget_by_role': ('local', <bound method LayoutManager.get_widget_by_role of <gui.layout.LayoutManager instance at 0x10e112e60>>), 'prefs_win': (None, [])} File "/opt/local/share/mypaint/gui/layout.py", line 98, get_widget_by_role(self=<gui.layout.LayoutManager instance>, role='preferencesWindow') try: result = self.factory(role, self, self.factory_opts) except ImportError: variables: {'self.factory': ('local', <function window_factory at 0x10e26aa28>), 'role': ('local', 'preferencesWindow'), 'result': (None, []), 'self.factory_opts': ('local', [<gui.application.Application instance at 0x10e308c20>]), 'self': ('local', <gui.layout.LayoutManager instance at 0x10e112e60>)} File "/opt/local/share/mypaint/gui/windowing.py", line 57, window_factory(role='preferencesWindow', layout_manager=<gui.layout.LayoutManager instance>, app=<gui.application.Application instance>) else: window = module.Window(app) return (window, ) variables: {'window': (None, []), 'app': ('local', <gui.application.Application instance at 0x10e308c20>), 'module.Window': ('local', <class 'gui.preferenceswindow.Window'>)} File "/opt/local/share/mypaint/gui/preferenceswindow.py", line 120, __init__(self=<Window object at 0x10e16de60 (GtkDialog at 0x7f942a60d1e0)>, app=<gui.application.Application instance>) bindings=app.preferences["input.button_mapping"], actions_possible=actions_possible) self.button_map_editor.bindings_observers.append( variables: {'actions_possible': ('local', ['LayerMoveMode', 'StraightMode', 'RotateViewMode', 'ColorPickMode', 'ZoomViewMode', 'EllipseMode', 'FrameEditMode', 'SequenceMode', 'PanViewMode', 'ShowPopupMenu', 'Undo', 'Redo', 'Bigger', 'Smaller', 'MoreOpaque', 'LessOpaque', 'PickContext', 'Fullscreen', 'ToggleSubwindows', 'BrushChooserPopup', 'ColorRingPopup', 'ColorDetailsDialog', 'ColorChangerWashPopup', 'ColorChangerCrossedBowlPopup', 'ColorHistoryPopup', 'PalettePrev', 'PaletteNext'])} File "/opt/local/share/mypaint/gui/buttonmap.py", line 211, __init__(self=<ButtonMappingEditor object at 0x10e17f3c0 (GtkEventBox at 0x7f942c031890)>, app=<gui.application.Application instance>, bindings={}, actions_possible=['LayerMoveMode', 'StraightMode', 'RotateViewMode', 'ColorPickMode', 'ZoomViewMode', 'EllipseMode', 'FrameEditMode', 'SequenceMode', 'PanViewMode', 'ShowPopupMenu', 'Undo', 'Redo', 'Bigger', 'Smaller', 'MoreOpaque', 'LessOpaque', 'PickContext', 'Fullscreen', 'ToggleSubwindows', 'BrushChooserPopup', ...]) for bp_name, action_name in tmp_bindings.iteritems(): bp_name = button_press_name(*button_press_parse(bp_name)) bindings[bp_name] = action_name variables: {'button_press_name': ('global', <function button_press_name at 0x10e2ef398>), 'bp_name': ('local', 'Button3'), 'button_press_parse': ('global', <function button_press_parse at 0x10e2ef410>)} File "/opt/local/share/mypaint/gui/buttonmap.py", line 27, button_press_name(button=3, mods=0) return None mods = gdk.ModifierType(mods) modif_name = gtk.accelerator_name(0, mods) variables: {'mods': ('local', 0), 'gdk.ModifierType': ('global', <class 'gtk.gdk.ModifierType'>)} ValueError: invalid flag value: 0	Ryan Schmidt <ryandesign>

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Date	Changed By	Updated Field	Previous Value	Replaced By
Sat 05 Jan 2013 07:33:22 PM UTC	jonnor	Status	Need Info	Invalid
		Open/Closed	Open	Closed
Sat 05 Jan 2013 12:55:43 PM UTC	jonnor	Summary	ValueError: invalid flag value: 0	[GTK] ValueError: invalid flag value: 0
Fri 04 Jan 2013 03:18:51 PM UTC	achadwick	Status	None	Need Info

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