Pympress package

This page contains the inline documentation, generated from the code using sphinx.

The code is documented in the source using the Google style for docstrings. Sphinx has gathered a set of examples which serves as a better crash course than the full style reference.

Retructured text (rst) can be used inside the comments and docstrings.

Modules

pympress.__main__ – The entry point of pympress

pympress.__main__.uncaught_handler(*exc_info)

Exception handler, to log uncaught exceptions to our log file.

pympress.__main__.main(argv=['/opt/hostedtoolcache/Python/3.12.4/x64/lib/python3.12/site-packages/sphinx/__main__.py', '-bhtml', 'docs/', 'build/sphinx/html', '-t', 'api_doc', '-t', 'install_instructions'])

Entry point of pympress. Parse command line arguments, instantiate the UI, and start the main loop.

pympress.app – The Gtk.Application managing the lifetime and CLI

class pympress.app.Pympress

Bases: Application

Class representing the single pympress Gtk application.

gui = None

The UI object that is the interface of pympress

config = None

The Config object that holds pympress conferences

action_startup_queue = []

list of actions to be passed to the GUI that were queued before GUI was created

auto_log_level = True

bool to automatically upgrade log level (DEBUG / INFO at init, then ERROR), False if user set log level

options = {'blank': (98, <flags 0 of type GLib.OptionFlags>, <enum G_OPTION_ARG_NONE of type GLib.OptionArg>), 'first': (102, <flags 0 of type GLib.OptionFlags>, <enum G_OPTION_ARG_NONE of type GLib.OptionArg>), 'last': (108, <flags 0 of type GLib.OptionFlags>, <enum G_OPTION_ARG_NONE of type GLib.OptionArg>), 'log': (0, <flags 0 of type GLib.OptionFlags>, <enum G_OPTION_ARG_STRING of type GLib.OptionArg>), 'next': (110, <flags 0 of type GLib.OptionFlags>, <enum G_OPTION_ARG_NONE of type GLib.OptionArg>), 'notes': (78, <flags 0 of type GLib.OptionFlags>, <enum G_OPTION_ARG_STRING of type GLib.OptionArg>), 'pause': (80, <flags 0 of type GLib.OptionFlags>, <enum G_OPTION_ARG_NONE of type GLib.OptionArg>), 'prev': (112, <flags 0 of type GLib.OptionFlags>, <enum G_OPTION_ARG_NONE of type GLib.OptionArg>), 'quit': (113, <flags 0 of type GLib.OptionFlags>, <enum G_OPTION_ARG_NONE of type GLib.OptionArg>), 'reset': (114, <flags 0 of type GLib.OptionFlags>, <enum G_OPTION_ARG_NONE of type GLib.OptionArg>), 'talk-time': (116, <flags 0 of type GLib.OptionFlags>, <enum G_OPTION_ARG_STRING of type GLib.OptionArg>), 'version': (118, <flags 0 of type GLib.OptionFlags>, <enum G_OPTION_ARG_NONE of type GLib.OptionArg>)}

option_descriptions = {'blank': ('Blank/unblank content screen', None), 'first': ('First slide', None), 'last': ('Last slide', None), 'log': ('Set level of verbosity in log file: DEBUG, INFO, WARNING, ERROR, or CRITICAL', '<level>'), 'next': ('Next slide', None), 'notes': ('Set the position of notes on the pdf page (none, left, right, top, bottom, after, odd, or prefix). Overrides the detection from the file.', '<position>'), 'pause': ('Toggle pause of talk timer', None), 'prev': ('Previous slide', None), 'quit': ('Close opened pympress instance', None), 'reset': ('Reset talk timer', None), 'talk-time': ('The estimated (intended) talk time in minutes (and optionally seconds)', 'mm[:ss]'), 'version': ('Print version and exit', None)}

version_string = 'Pympress: 1.8.5 ; Python: 3.12.4 ; OS: Linux 6.5.0-1024-azure #25~22.04.1-Ubuntu SMP Mon Jun 17 18:38:57 UTC 2024 ; Gtk 3.24.33 ; GLib 2.71.3 ; Poppler 22.02.0 cairo ; Cairo 1.16.0 , pycairo 1.26.1'

quit(*args)

Quit and ignore other arguments e.g. sent by signals.

do_startup()

Common start-up tasks for primary and remote instances.

NB. super(self) causes segfaults, Gtk.Application needs to be used as base.

do_activate(timestamp=1722086546.853103)

Activate: show UI windows.

Build them if they do not exist, otherwise bring to front.

set_action_enabled(name, value)

Parse an action name and set its enabled state to True or False.

Parameters:

• name (str) – the name of the stateful action

• value (bool) – wheether the action should be enabled or disabled

set_action_state(name, value)

Parse an action name and set its state wrapped in a Variant.

Parameters:

• name (str) – the name of the stateful action

• value (str, int, bool or float) – the value to set.

get_action_state(name)

Parse an action name and return its unwrapped state from the Variant.

Parameters:

name (str) – the name of the stateful action

Returns:

the value contained in the action

Return type:

str, int, bool or float

activate_action(name, parameter=None)

Parse an action name and activate it, with parameter wrapped in a Variant if it is not None.

Parameters:

• name (str) – the name of the stateful action

• parameter – an object or None to pass as a parameter to the action, wrapped in a GLib.Variant

do_open(files, n_files, hint)

Handle opening files. In practice we only open once, the last one.

Parameters:

• files (list of File) – representing an array of files to open

• n_files (int) – the number of files passed.

• hint (str) – a hint, such as view, edit, etc. Should always be the empty string.

do_shutdown()

Perform various cleanups and save preferences.

set_log_level(action, param)

Action that sets the logging level (on the root logger of the active instance)

Parameters:

• action (Action) – The action activatd

• ( (param) – class:~`GLib.Variant`): The desired level as an int wrapped in a GLib.Variant

do_handle_local_options(opts_variant_dict)

Parse command line options, returned as a VariantDict

Returns:

estimated talk time, log level, notes positions.

Return type:

tuple

pympress.ui – GUI management

This module contains the whole graphical user interface of pympress, which is made of two separate windows: the Content window, which displays only the current page in full size, and the Presenter window, which displays both the current and the next page, as well as a time counter and a clock.

Both windows are managed by the UI class.

class pympress.ui.UI(app, config)

Bases: Builder

Pympress GUI management.

c_win = None

Content window, as a Window instance.

c_frame = None

AspectFrame for the Content window.

c_da = None

DrawingArea for the Content window.

p_win = None

Presenter window, as a Window instance.

p_central = None

Box for the Presenter window.

p_frame_notes = None

AspectFrame for the current slide in the Presenter window.

p_da_notes = None

DrawingArea for the current slide in the Presenter window.

grid_next = None

Grid for the next slide(s) in the Presenter window.

p_frames_next = None

list of AspectFrame for the next slide in the Presenter window.

p_das_next = None

DrawingArea for the next slide in the Presenter window.

next_frames_count = 16

int the number of next slides currently on display in the “Next slides” pane, initialized to the maximal number

p_frame_cur = None

list of AspectFrame for the current slide copy in the Presenter window.

p_da_cur = None

DrawingArea for the current slide copy in the Presenter window.

p_frame_annot = None

Frame for the annotations in the Presenter window.

resize_panes = False

Indicates whether we should delay redraws on some drawing areas to fluidify resizing gtk.paned

redraw_timeout = 0

Tracks return values of GLib.timeout_add to cancel gtk.paned’s redraw callbacks

notes_mode = 0

Whether to use notes mode or not

prev_button = None

ToolButton big button for touch screens, go to previous slide

next_button = None

ToolButton big button for touch screens, go to next slide

laser_button = None

ToolButton big button for touch screens, go toggle the pointer

highlight_button = None

ToolButton big button for touch screens, go to scribble on screen

current_page = -1

number of page currently displayed in Content window’s miniatures

preview_page = -1

number of page currently displayed in Presenter window’s miniatures

pane_handle_pos = {}

Map of Paned to the relative position (float between 0 and 1) of its handle

doc = <pympress.document.EmptyDocument object>

Current Document instance.

shortcuts_window = None

A ShortcutsWindow to show the shortcuts

accel_group = None

A AccelGroup to store the shortcuts

inhibit_cookie = None

int or None, may keep track of the Gtk.Application inhibit request

app = None

The Pympress instance

config = None

Config to remember preferences

blanked = False

track whether we blank the screen

show_annotations = True

Whether to display annotations or not

chosen_notes_mode = 4

Current choice of mode to toggle notes

show_bigbuttons = True

Whether to display big buttons or not

cache = None

SurfaceCache instance.

recent_menu = None

A Menu to display the recent files to open

zoom = None

Class Zoom managing the zoom level of the current slide.

scribbler = None

Class Scribble managing drawing by the user on top of the current slide.

deck = None

Class Overview displaying a view of all slides

annotations = None

Class Annotations managing the display of annotations

medias = None

Class Media managing keeping track of and callbacks on media overlays

laser = None

Software-implemented laser pointer, Pointer

est_time = None

EstimatedTalkTime to set estimated/remaining talk time

page_number = None

PageNumber displaying and setting current page numbers

timing = None

TimingReport popup to show how much time was spent on which part

autoplay = None

AutoPlay popup to configure automatic playing

talk_time = None

TimeCounter clock tracking talk time (elapsed, and remaining)

layout_editor = None

LayoutEditor popup to configure the layouts of the presenter window

file_watcher = None

A FileWatcher object to reload modified files

placeable_widgets = {}

Dictionary of Widget from the presenter window that can be dynamically rearranged

load_icons()

Set the icon list for both windows.

make_cwin()

Initializes the content window.

make_pwin()

Initializes the presenter window.

reconfigure_next_frames(gaction, param)

Callback to set the number of next frames to preview the the “next slides” panel

Parameters:

• gaction (Action) – the action triggering the call

• param (Variant) – the number of slides as a GVariant

reflow_next_frames(n_frames=None)

Set the number of next frames to preview the the “next slides” panel

Parameters:

n_frames (int) – the number of frames

compute_frame_grid(grid_ar, n_frames)

Determine the arrangement of frames in a grid to maximise their size given respective aspect ratios

Parameters:

• grid_ar (float) – aspect ratio of grid containing the slides

• n_frames (int) – the number of frames

screens_changed(screen)

Handle ::monitors-changed events

Parameters:

screen (Screen) – the screen

setup_screens(screen, event_name='')

If multiple monitors, fullscreen windows on monitors according to config.

Parameters:

• screen (Screen) – the screen

• event_name (str) – a description of what caused the screen setup event, for debugging

move_window(win, from_bounds, to_bounds)

Move window from monitor number from_monitor to monitor to_monitor.

show_shortcuts(*args)

Display the shortcuts window.

close_shortcuts(*args)

Destroy the shortcuts window once it is hidden.

on_configure_da(widget, event)

Manage “configure” events for all drawing areas, e.g. resizes.

We tell the local SurfaceCache cache about it, so that it can invalidate its internal cache for the specified widget and pre-render next pages at a correct size.

Warning: Some not-explicitly sent signals contain wrong values! Just don’t resize in that case, since these always seem to happen after a correct signal that was sent explicitly.

Parameters:

• widget (Widget) – the widget which has been resized

• event (Event) – the GTK event, which contains the new dimensions of the widget

on_configure_win(widget, event)

Manage “configure” events for both window widgets.

Parameters:

• widget (Widget) – the window which has been moved or resized

• event (Event) – the GTK event, which contains the new dimensions of the widget

adjust_bottom_bar_font()

Scale baseline font size of bottom bar, clipped to 6px..13px. Fonts are then scaled by CSS em indications.

redraw_panes()

Handler for Paned’s resizing signal.

Used for delayed drawing events of drawing areas inside the panes.

This is very useful on windows where resizing gets sluggish if we try to redraw while resizing.

on_pane_event(widget, evt)

Signal handler for gtk.paned events.

This function allows one to delay drawing events when resizing, and to speed up redrawing when moving the middle pane is done (which happens at the end of a mouse resize)

Parameters:

• widget (Widget) – the widget in which the event occurred (ignored)

• evt (Event) – the event that occurred

cleanup(*args)

Save configuration and exit the main loop.

menu_about(*args)

Display the “About pympress” dialog.

Handles clicks on the “about” menu.

swap_document(doc_uri, page=0, reloading=False)

Replace the currently open document with a new one.

The new document is possibly and EmptyDocument if doc_uri is None. The state of the ui and cache are updated accordingly.

Parameters:

• doc_uri (str) – the URI to the new document

• page (int) – the page at which to start the presentation

• reloading (bool) – whether we are reloading or detecting stuff from the document

reload_document()

Reload the current document.

populate_recent_menu(gaction, is_opening=None)

Callback for the recent document menu.

Gets the URI and requests the document swap.

Parameters:

• gaction (Action) – the action triggering the call

• is_opening (Variant) – a wrapped boolean indicating whether the menu is opening or closing.

on_drag_drop(widget, drag_context, x, y, data, info, time)

Receive the drag-drops (as text only). If a file is dropped, open it.

Parameters:

• widget (Widget) – The widget on which the dragged item was dropped

• drag_context (DragContext) – Context object of the dragging

• x (float) – position of the drop

• y (float) – position of the drop

• data (SelectionData) – container for the dropped data

• info (int) – info on the target

• time (int) – time of the drop

unsaved_changes(reload=False)

Prompt the user about what to do with changes in the document: save, discard, or cancel action

Parameters:

reload (bool) – The unsaved changes is prompted by reloading the file

Returns:

True iff we need to cancel the current action

Return type:

bool

save_file_as(*args)

Remove the current document.

pick_file(*args)

Ask the user which file he means to open.

error_opening_file(uri)

Remove the current document.

Parameters:

uri (str) – the URI of the document

close_file(*args)

Remove the current document.

save_file(*args)

Remove the current document.

open_file(gaction, target)

Open a document.

Parameters:

• gaction (Action) – the action triggering the call

• target (Variant) – the file to open as a string variant

get_notes_mode()

Simple getter.

Returns:

Truthy when we split slides in content + notes

Return type:

PdfPage

on_page_change(widget, event=None)

Signal handler for current page editing.

Parameters:

• widget (Widget) – the editable widget which has received the event.

• event (Event) – the GTK event.

goto_page(page, autoplay=False)

Handle going to the page passed as argument

Parameters:

• page (int) – the page to which to go. Will be clipped to document pages.

• autoplay (bool) – whether this page change was triggered automatically

doc_goto_prev(gaction=None, param=None)

Handle going to the next page.

Parameters:

• gaction (Action) – the action triggering the call

• param (Variant) – the parameter as a variant, or None

doc_goto_next(gaction=None, param=None)

Handle going to the previous page.

Parameters:

• gaction (Action) – the action triggering the call

• param (Variant) – the parameter as a variant, or None

doc_label_next(gaction=None, param=None)

Handle going to the next page with a different label.

Parameters:

• gaction (Action) – the action triggering the call

• param (Variant) – the parameter as a variant, or None

doc_label_prev(gaction=None, param=None)

Handle going to the previous page with a different label.

Parameters:

• gaction (Action) – the action triggering the call

• param (Variant) – the parameter as a variant, or None

doc_hist_prev(gaction=None, param=None)

Handle going to the previous page in the history of visited pages

Parameters:

• gaction (Action) – the action triggering the call

• param (Variant) – the parameter as a variant, or None

doc_hist_next(gaction=None, param=None)

Handle going to the next page in the history of visited pages

Parameters:

• gaction (Action) – the action triggering the call

• param (Variant) – the parameter as a variant, or None

doc_goto_home(gaction=None, param=None)

Handle going to the start of the document

Parameters:

• gaction (Action) – the action triggering the call

• param (Variant) – the parameter as a variant, or None

doc_goto_end(gaction=None, param=None)

Handle going to the end of the document

Parameters:

• gaction (Action) – the action triggering the call

• param (Variant) – the parameter as a variant, or None

do_page_change(unpause=True, autoplay=False)

Switch to another page and display it.

This is a kind of event which is supposed to be called only from the Document class.

Parameters:

• is_preview (bool) – True if the page change should not update the content

• unpause (bool) – True if the page change should unpause the timer, False otherwise

• autoplay (bool) – True if the page change is triggered automatically, otherwise cancel auto play

on_draw(widget, cairo_context)

Manage draw events for both windows.

This callback may be called either directly on a page change or as an event handler by GTK. In both cases, it determines which widget needs to be updated, and updates it, using the SurfaceCache if possible.

Parameters:

• widget (Widget) – the widget to update

• cairo_context (Context) – the Cairo context (or None if called directly)

clear_zoom_cache()

Callback to clear the cache of zoomed widgets.

redraw_current_slide()

Callback to queue a redraw of the current slides (in both winows).

validate_current_input(gaction, param=None)

Handle the action validating the input, if applicable.

Parameters:

• gaction (Action) – the action triggering the call

• param (Variant) – the parameter as a variant, or None

on_key_input(widget, event)

Handle key strokes at top level, only for when editing needs to bypass action accelerators

Parameters:

• widget (Widget) – the widget which has received the key stroke

• event (Event) – the GTK event, which contains the key stroke details

cancel_current_input(gaction, param=None)

Handle the action cancelling the input, if applicable.

Parameters:

• gaction (Action) – the action triggering the call

• param (Variant) – the parameter as a variant, or None

on_scroll(widget, event)

Manage scroll events.

Parameters:

• widget (Widget) – the widget in which the event occurred (ignored)

• event (Event) – the event that occurred

Returns:

whether the event was consumed

Return type:

bool

track_motions(widget, event)

Track mouse motion events.

Handles mouse motions on the “about” menu.

Parameters:

• widget (Widget) – the widget that received the mouse motion

• event (Event) – the GTK event containing the mouse position

Returns:

whether the event was consumed

Return type:

bool

track_clicks(widget, event)

Track mouse press and release events.

Handles clicks on the slides.

Parameters:

• widget (Widget) – the widget that received the click

• event (Event) – the GTK event containing the click position

Returns:

whether the event was consumed

Return type:

bool

click_link(widget, event)

Check whether a link was clicked and follow it.

Handles a click on a slide.

Parameters:

• widget (Widget) – the widget in which the event occurred

• event (Event) – the event that occurred

Returns:

whether the event was consumed

Return type:

bool

hover_link(widget, event)

Manage events related to hyperlinks, setting the cursor to a pointer if the hovered region is clickable.

Parameters:

• widget (Widget) – the widget in which the event occurred

• event (Event) – the event that occurred

Returns:

whether the event was consumed

Return type:

bool

switch_fullscreen(gaction, target)

Switch the Content window to fullscreen (if in normal mode) or to normal mode (if fullscreen).

Screensaver will be disabled when entering fullscreen mode, and enabled when leaving fullscreen mode.

Parameters:

widget (Widget) – the widget in which the event occurred

Returns:

whether some window’s full screen status got toggled

Return type:

bool

set_screensaver(disabled)

Disable or re-enable the screensaver.

Parameters:

disabled (bool) – True iff the screensaver should be disabled, otherwise enabled.

update_frame_position(widget, user_data)

Callback to preview the frame alignment, called from the Gtk.SpinButton.

Parameters:

• widget (SpinButton) – The button updating the slide alignment in the drawing area widget

• user_data (str) – The property being set, either the x or y alignment (resp. xalign and yalign).

adjust_frame_position(*args)

Select how to align the frame on screen.

swap_screens(*args)

Swap the monitors on which each window is displayed (if there are 2 monitors at least).

switch_blanked(gaction, param)

Switch the blanked mode of the content screen.

Parameters:

• gaction (Action) – the action triggering the call

• param (Variant) – the parameter as a variant, or None

Returns:

whether the notes blanking has been toggled.

Return type:

bool

layout_name(notes_mode)

Return the layout made for the selected notes_mode

Parameters:

notes_mode (PdfPage) – the mode/positioning of notes

Returns:

a string representing the appropriate layout

Return type:

str

load_layout(new)

Replace the current layout

Parameters:

new (str) – the name of the layout to load, None to use current layout automatically

change_notes_pos(gaction, target, force=False)

Switch the position of the nodes in the slide.

Returns:

the action triggering the call target (Variant): the notes position as a string variant force (bool): Whether to force the notes switch even if it’s already enabled

Return type:

gaction (Action)

Returns:

whether the notes position has been toggled

Return type:

bool

switch_mode(gaction, target_mode=None, force=False)

Switch the display mode to “Notes mode” or “Normal mode” (without notes).

Returns:

the action triggering the call target_mode (PdfPage): the mode to which we should switch force (bool): Whether to force the mode switch even if it’s already enabled

Return type:

gaction (Action)

Returns:

whether the notes mode has been toggled

Return type:

bool

switch_annotations(gaction, target)

Switch the display to show annotations or to hide them.

Returns:

the action triggering the call target (Variant): the parameter as a variant, or None

Return type:

gaction (Action)

Returns:

whether the mode has been toggled.

Return type:

bool

switch_bigbuttons(*args)

Toggle the display of big buttons (nice for touch screens).

pympress.document – document handling

This module contains several classes that are used for managing documents (only PDF documents are supported at the moment, but other formats may be added in the future).

An important point is that this module is completely independent from the GUI: there should not be any GUI-related code here, except for page rendering (and only rendering itself: the preparation of the target surface must be done elsewhere).

pympress.document.get_extension(mime_type)

Returns a valid filename extension (recognized by python) for a given mime type.

Parameters:

mime_type (str) – The mime type for which to find an extension

Returns:

A file extension used for the given mimetype

Return type:

str

class pympress.document.PdfPage(value, names=<not given>, *values, module=None, qualname=None, type=None, start=1, boundary=None)

Bases: IntEnum

Represents the part of a PDF page that we want to draw.

NONE = 0

No notes on PDF page, only falsy value

FULL = 1

Full PDF page (without notes)

BOTTOM = 2

Bottom half of PDF page

TOP = 3

Top half of PDF page

RIGHT = 4

Right half of PDF page

LEFT = 5

Left half of PDF page

AFTER = 6

Full page + draw another page for notes, which is after the slides

BEFORE = 7

for a notes page, the slide page is BEFORE by half a document

Type:

Complementary of AFTER

ODD = 8

Slides on even pages (0-indexed), notes on uneven pages

EVEN = 9

Complementary of ODD

MAP = 10

An arbitrary mapping of notes pages to slide pages

RMAP = 11

Reverse the arbitrary mapping MAP

complement()

Return the enum value for the other part of the page.

scale()

Return the enum value that does only scaling not shifting.

direction()

Returns whether the pdf page/notes mode is horizontal or vertical.

Returns:

a string representing the direction that can be used as the key in the config section

Return type:

str

from_screen(x, y, x2=None, y2=None)

Transform visible part of the page coordinates to full page coordinates.

Pass 2 floats to transform coordinates, 4 to transform margins, i.e. the second pair of coordinates is taken from the opposite corner.

Parameters:

• x (float) – x coordinate on the screen, on a scale 0..1

• y (float) – y coordinate on the screen, on a scale 0..1

• x2 (float) – second x coordinate on the screen, from the other side, on a scale 0..1

• y2 (float) – second y coordinate on the screen, from the other side, on a scale 0..1

to_screen(x, y, x2=None, y2=None)

Transform full page coordinates to visible part coordinates.

Pass 2 floats to transform coordinates, 4 to transform margins, i.e. the second pair of coordinates is taken from the opposite corner.

Parameters:

• x (float) – x coordinate on the page, on a scale 0..1

• y (float) – y coordinate on the page, on a scale 0..1

• x2 (float) – optional second x coordinate on the page, on a scale 0..1

• y2 (float) – optional second y coordinate on the page, on a scale 0..1

class pympress.document.Link(x1, y1, x2, y2, action)

Bases: object

This class encapsulates one hyperlink of the document.

Parameters:

• x1 (float) – first x coordinate of the link rectangle

• y1 (float) – first y coordinate of the link rectangle

• x2 (float) – second x coordinate of the link rectangle

• y2 (float) – second y coordinate of the link rectangle

• action (function) – action to perform when the link is clicked

x1 = None

float, first x coordinate of the link rectangle

y1 = None

float, first y coordinate of the link rectangle

x2 = None

float, second x coordinate of the link rectangle

y2 = None

float, second y coordinate of the link rectangle

follow(**kwargs)

function, action to be perform to follow this link

is_over(x, y)

Tell if the input coordinates are on the link rectangle.

Parameters:

• x (float) – input x coordinate

• y (float) – input y coordinate

Returns:

True if the input coordinates are within the link rectangle, False otherwise

Return type:

bool

static build_closure(fun, *args, **kwargs)

Return a lambda that calls fun(*args, **kwargs), with the current value of args and kwargs.

By creating the lambda in a new scope, we bind the arguments.

Parameters:

• fun (function) – The function to be called

• args (tuple) – non-keyworded variable-length argument list to pass to fun()

• kwargs (dict) – keyworded variable-length argument dict to pass to fun()

class pympress.document.Media(x1, y1, x2, y2, filename, autoplay, repeat, poster, show_controls, type, start_pos, duration)

Bases: tuple

A class that holds all the properties for media files

autoplay

Alias for field number 5

duration

Alias for field number 11

filename

Alias for field number 4

poster

Alias for field number 7

repeat

Alias for field number 6

show_controls

Alias for field number 8

start_pos

Alias for field number 10

type

Alias for field number 9

x1

Alias for field number 0

x2

Alias for field number 2

y1

Alias for field number 1

y2

Alias for field number 3

class pympress.document.Page(page, number, parent)

Bases: object

Class representing a single page.

It provides several methods used by the GUI for preparing windows for displaying pages, managing hyperlinks, etc.

Parameters:

• doc (Page) – the poppler object around the page

• number (int) – number of the page to fetch in the document

• parent (Document) – the parent Document class

page = None

Page handled by this class (instance of Page)

page_nb = -1

int, number of the current page (starting from 0)

parent = None

Instance of Document that contains this page.

links = []

All the links in the page, as a list of Link instances

medias = []

All the media in the page, as a list of Media

annotations = []

All text annotations

page_label = None

str representing the page label

pw = 0.0

float, page width

ph = 0.0

float, page height

get_link_action(link_type, action)

Get the function to be called when the link is followed.

Parameters:

• link_type (ActionType) – The type of action to be performed

• action (Action) – The atcion to be performed

Returns:

The function to be called to follow the link

Return type:

function

get_annot_action(link_type, action, rect)

Get the function to be called when the link is followed.

Parameters:

• link_type (ActionType) – The link type

• action (Action) – The action to be performed when the link is clicked

• rect (Rectangle) – The region of the page where the link is

Returns:

The function to be called to follow the link

Return type:

function

number()

Get the page number.

label()

Get the page label.

get_link_at(x, y, dtype=PdfPage.FULL)

Get the Link corresponding to the given position.

Returns None if there is no link at this position.

Parameters:

• x (float) – horizontal coordinate

• y (float) – vertical coordinate

• dtype (PdfPage) – the type of document to consider

Returns:

the link at the given coordinates if one exists, None otherwise

Return type:

Link

get_size(dtype=PdfPage.FULL)

Get the page size.

Parameters:

dtype (PdfPage) – the type of document to consider

Returns:

page size

Return type:

(float, float)

get_aspect_ratio(dtype=PdfPage.FULL)

Get the page aspect ratio.

Parameters:

dtype (PdfPage) – the type of document to consider

Returns:

page aspect ratio

Return type:

float

get_annotations()

Get the list of text annotations on this page.

Returns:

annotations on this page

Return type:

list of str

new_annotation(pos, rect=None, value='')

Add an annotation to this page

Parameters:

• pos (int) – The position in the list of annotations in which to insert this annotation

• rect (Rectangle) – A rectangle for the position of this annotation

• value (str) – The contents of the annotation

set_annotation(pos, value)

Update an annotation on this page

Parameters:

• pos (int) – The number of the annotation

• value (str) – The new contents of the annotation

remove_annotation(pos)

Remove an annotation from this page

Parameters:

pos (int) – The number of the annotation

get_media()

Get the list of medias this page might want to play.

Returns:

medias in this page

Return type:

list

render_cairo(cr, ww, wh, dtype=PdfPage.FULL)

Render the page on a Cairo surface.

Parameters:

• cr (CairoContext) – target surface

• ww (int) – target width in pixels

• wh (int) – target height in pixels

• dtype (PdfPage) – the type of document that should be rendered

can_render()

Informs that rendering is necessary (avoids checking the type).

Returns:

True, do rendering

Return type:

bool

class pympress.document.Document(builder, pop_doc, uri)

Bases: object

This is the main document handling class.

The page numbering starts as 0 and is aware of notes (i.e. number of pages may change to account for note pages). The document page numbers are the same as in Poppler, and also start at 0 but do not depend on notes.

Parameters:

• builder (pympress.builder.Builder) – A builder to load callbacks

• pop_doc (Document) – Instance of the Poppler document that this class will wrap

• uri (str) – URI of the PDF file to open

• page (int) – page number to which the file should be opened

temp_files = {}

set of Path representing the temporary files which need to be removed

history = []

History of pages we have visited, using note-aware page numbers

hist_pos = -1

Our position in the history

notes_mapping = None

list of (slide’s document page number, notes’ document page number) tuples, or None if there are no notes

navigate()

callback, to be connected to goto_page()

play_media()

callback, to be connected to play()

start_editing_page_number()

callback, to be connected to start_editing()

uri = None

str full path to pdf

doc = None

Current PDF document (Document instance)

changes = False

bool indicating whether there were modifications to the document

path = None

URI

Type:

Path to pdf if uri is a file

nb_pages = -1

Number of pages in the document

doc_page_labels = []

list of all the page labels, indexed on document page numbers

page_labels = []

list of slide page labels, indexed on note-aware page numbers

pages_cache = {}

Pages cache (dict of Page). This makes navigation in the document faster by avoiding calls to Poppler when loading a page that has already been loaded.

get_structure(index_iter=None)

Gets the structure of the document from its index.

Recursive, pass the iterator.

Parameters:

index_iter (IndexIter or None) – the iterator for the child index to explore.

Returns:

A list of tuples (depth, page number, title)

Return type:

list

static create(builder, uri)

Initializes a Document by passing it a Document.

Parameters:

• builder (pympress.builder.Builder) – A builder to load callbacks

• uri (str) – URI to the PDF file to open

• page (int) – page number to which the file should be opened

Returns:

The initialized document

Return type:

Document

made_changes()

Notify the document that some changes were made (e.g. annotations edited)

has_changes()

Return whether that some changes were made (e.g. annotations edited)

save_changes(dest_uri=None)

Save the changes

Parameters:

dest_uri (str or None) – The URI where to save the file, or None to save in-place

guess_notes(horizontal, vertical, current_page=0)

Get our best guess for the document mode.

Parameters:

• horizontal (str) – A string representing the preference for horizontal slides

• vertical (str) – A string representing the preference for vertical slides

Returns:

the notes mode

Return type:

PdfPage

set_notes_pos(notes_direction)

Set whether where the notes pages are relative to normal pages

Valid values are returned by direction() - page number (aka Libreoffice notes mode) - page parity (can not be detected automatically, where every other page contains notes) - page mapping (where labels of notes pages are corresponding slide labels prefixed with “notes:”)

Parameters:

notes_direction (str) – Where the notes pages are

page(number)

Get the specified page.

Parameters:

number (int) – number of the page to return

Returns:

the wanted page, or None if it does not exist

Return type:

Page

notes_page(number)

Get the specified page.

Parameters:

number (int) – number of the page to return

Returns:

the wanted page, or None if it does not exist

Return type:

Page

pages_number()

Get the number of pages in the document.

Returns:

the number of pages in the document

Return type:

int

has_labels()

Return whether this document has useful labels.

Returns:

False iff there are no labels or they are just the page numbers

Return type:

bool

get_last_label_pages()

Return the last page number for each consecutively distinct page label

In other words, squash together consecutive same labels

lookup_label(label, prefix_unique=True)

Find a page from its label.

Parameters:

• label (str) – the label we are searching for

• prefix_unique (bool) – whether a prefix match should be unique, e.g. when the user is still typing

Returns:

the page

Return type:

int

goto(number)

Switch to another page. Validates the number and returns one in the correct range. Also updates history.

Parameters:

number (int) – number of the destination page

label_after(page)

Switch to the next page with different label.

If we’re within a set of pages with the same label we want to go to the last one.

label_before(page)

Switch to the previous page with different label.

If we’re within a set of pages with the same label we want to go before the first one.

hist_next(*args)

Switch to the page we viewed next.

hist_prev(*args)

Switch to the page we viewed before.

get_uri()

Gives access to the URI, rather than the path, of this document.

Returns:

the URI to the file currently opened.

Return type:

str

get_full_path(filename)

Returns full path, extrapolated from a path relative to this document or to the current directory.

Parameters:

filename (Path or str) – Name of the file or relative path to it

Returns:

the full path to the file or None if it doesn’t exist

Return type:

Path

remove_on_exit(filename)

Remember a temporary file to delete later.

Parameters:

filename (Path) – The path to the file to delete

cleanup_media_files()

Removes all files that were extracted from the pdf into the filesystem.

class pympress.document.EmptyPage(parent)

Bases: Page

A dummy page, placeholder for when there are no valid pages around.

This page is a non-notes page with an aspect ratio of 1.3 and nothing else inside. Also, it has no “rendering” capability, and is made harmless by overriding its render function.

render_cairo(cr, ww, wh, dtype=PdfPage.FULL)

Overriding this purely for safety: make sure we do not accidentally try to render.

Parameters:

• cr (CairoContext) – target surface

• ww (int) – target width in pixels

• wh (int) – target height in pixels

• dtype (PdfPage) – the type of document that should be rendered

can_render()

Informs that rendering is not necessary (avoids checking the type).

Returns:

False, no rendering

Return type:

bool

class pympress.document.EmptyDocument

Bases: Document

A dummy document, placeholder for when no document is open.

page(number)

Retrieve a page from the document.

Parameters:

number (int) – page number to be retrieved

Returns:

-1 returns the empty page so we can display something.

Return type:

EmptyPage or None

notes_page(number)

Retrieve a page from the document.

Parameters:

number (int) – page number to be retrieved

Returns:

-1 returns the empty page so we can display something.

Return type:

EmptyPage or None

pympress.ui_builder – abstract GUI management

This module contains the tools to load the graphical user interface of pympress, building the widgets/objects from XML (glade) files, applying translation “manually” to avoid dealing with all the mess of C/GNU gettext’s bad portability.

class pympress.builder.Builder

Bases: Builder

GUI builder, inherits from Builder to read XML descriptions of GUIs and load them.

pending_pane_resizes = {}

dict mapping Paned names to a tuple of (handler id of the size-allocate signal, remaining number of times we allow this signal to run), and we run the signal 2 * (depth + 1) for each pane. This is because size allocation is done bottom-up but each pane sets a top-down constraint.

get_callback_handler(handler_name)

Returns the handler from its name, searching in target.

Parse handler names and split on ‘.’ to use recursion.

Parameters:

• target (object) – An object that has a method called handler_name

• handler_name (str) – The name of the function to be connected to a signal

Returns:

A function bound to an object

Return type:

function

signal_connector(builder, obj, signal_name, handler_name, connect_object, flags, *user_data)

Callback for signal connection. Implements the BuilderConnectFunc function interface.

Parameters:

• builder (Builder) – The builder, unused

• obj (Object) – The object (usually a wiget) that has a signal to be connected

• signal_name (str) – The name of the signal

• handler_name (str) – The name of the function to be connected to the signal

• connect_object (Object) – unused

• flags (ConnectFlags) – unused

• user_data (tuple) – supplementary positional arguments to be passed to the handler

connect_signals(base_target)

Signal connector connecting to properties of base_target, or properties of its properties, etc.

Parameters:

• base_target (Builder) – The target object, that has functions to be connected to

• builder. (signals loaded in this)

load_ui(resource_name, **kwargs)

Loads the UI defined in the file named resource_name using the builder.

Parameters:

resource_name (str) – the basename of the glade file (without extension), identifying the resource to load.

list_attributes(target)

List the None-valued attributes of target.

Parameters:

target (dict) – An object with None-valued attributes

load_widgets(target)

Fill in target with the missing elements introspectively.

This means that all attributes of target that are None now must exist under the same name in the builder.

Parameters:

target (dict) – An object with None-valued properties whose names correspond to ids of built widgets.

replace_layout(layout, top_widget, leaf_widgets, pane_resize_handler=None)

Remix the layout below top_widget with the layout configuration given in ‘layout’ (assumed to be valid!).

Parameters:

• layout (dict) – the json-parsed config string, thus a hierarchy of lists/dicts, with strings as leaves

• top_widget (Container) – The top-level widget under which we build the hierachyy

• leaf_widgets (dict) – the map of valid leaf identifiers (strings) to the corresponding Widget

• pane_resize_handler (function) – callback function to be called when the panes are resized

Returns:

The mapping of the used Paned widgets to their relative handle position (in 0..1).

Return type:

dict

resize_paned(paned, rect, relpos)

Resize paned to have its handle at relpos, then disconnect this signal handler.

Called from the Gtk.Widget.signals.size_allocate() signal.

Parameters:

• paned (Paned) – Panel whose size has just been allocated, and whose handle needs initial placement.

• rect (Rectangle) – The rectangle specifying the size that has just been allocated to paned

• relpos (float) – A number between 0. and 1. that specifies the handle position

Returns:

True

static setup_actions(actions, action_map=None)

Sets up actions with a given prefix, using the Application as the ActionMap.

Parameters:

• actions (dict) – Maps the action names to dictionaries containing their parameters.

• action_map (ActionMap) – The object implementing the action map interface to register actions

pympress.surfacecache – pages prerendering and caching

This modules contains stuff needed for caching pages and prerendering them. This is done by the SurfaceCache class, using several dict of ImageSurface for storing rendered pages.

The problem is, neither Gtk+ nor Poppler are particularly threadsafe. Hence the prerendering isn’t really done in parallel in another thread, but scheduled on the main thread at idle times using GLib.idle_add().

class pympress.surfacecache.SurfaceCache(doc, max_pages)

Bases: object

Pages caching and prerendering made (almost) easy.

Parameters:

• doc (Document) – the current document

• max_pages (int) – The maximum page number.

surface_cache = {}

The actual cache. The dict`s keys are widget names and its values are :class:`~collections.OrderedDict, whose keys are page numbers and values are instances of ImageSurface. In each OrderedDict keys are ordered by Least Recently Used (get or set), when the size is beyond max_pages, pages are popped from the start of the cache.

surface_factory = {}

dict containing functions that return a Surface given a Format, width int and height int, see create_similar_image_surface()

surface_size = {}

Size of the different managed widgets, as a dict of tuples

surface_type = {}

its keys are widget names and its values are document types from ui.

Type:

Type of document handled by each widget. It is a dict

locks = {}

Dictionary of Lock used for managing conccurent accesses to surface_cache and surface_size

unlimited = {}

Set of widgets for which we ignore the max

active_widgets = {}

Set of active widgets

max_pages = 200

maximum number of pages we keep in cache

doc = None

The current Document.

doc_lock = None

Lock used to manage conccurent accesses to doc.

add_widget(widget, wtype, prerender_enabled=True, zoomed=False, ignore_max=False)

Add a widget to the list of widgets that have to be managed (for caching and prerendering).

This creates new entries for widget_name in the needed internal data structures, and creates a new thread for prerendering pages for this widget.

Parameters:

• widget (Widget) – The widget for which we need to cache

• wtype (int) – type of document handled by the widget (see surface_type)

• prerender_enabled (bool) – whether this widget is initially in the list of widgets to prerender

• zoomed (bool) – whether we will cache a zoomed portion of the widget

• ignore_max (bool) – whether we will cache an unlimited number of slides

swap_document(new_doc)

Replaces the current document for which to cache slides with a new one.

This function also clears the cached pages, since they now belong to an outdated document.

Parameters:

new_doc (Document) – the new document

disable_prerender(widget_name)

Remove a widget from the ones to be prerendered.

Parameters:

widget_name (str) – string used to identify a widget

enable_prerender(widget_name)

Add a widget to the ones to be prerendered.

Parameters:

widget_name (str) – string used to identify a widget

set_widget_type(widget_name, wtype)

Set the document type of a widget.

Parameters:

• widget_name (str) – string used to identify a widget

• wtype (int) – type of document handled by the widget (see surface_type)

get_widget_type(widget_name)

Get the document type of a widget.

Parameters:

widget_name (str) – string used to identify a widget

Returns:

type of document handled by the widget (see surface_type)

Return type:

int

clear_cache(widget_name=None)

Remove all cached values for a given widget. Useful for zoomed views.

Parameters:

widget_name (str) – name of the widget that is resized, None for all widgets.

resize_widget(widget_name, width, height)

Change the size of a registered widget, thus invalidating all the cached pages.

Parameters:

• widget_name (str) – name of the widget that is resized

• width (int) – new width of the widget

• height (int) – new height of the widget

get(widget_name, page_nb)

Fetch a cached, prerendered page for the specified widget.

Parameters:

• widget_name (str) – name of the concerned widget

• page_nb (int) – number of the page to fetch in the cache

Returns:

the cached page if available, or None otherwise

Return type:

ImageSurface

put(widget_name, page_nb, val)

Store a rendered page in the cache.

Parameters:

• widget_name (str) – name of the concerned widget

• page_nb (int) – number of the page to store in the cache

• val (ImageSurface) – content to store in the cache

prerender(page_nb)

Queue a page for prerendering.

The specified page will be prerendered for all the registered widgets.

Parameters:

page_nb (int) – number of the page to be prerendered

renderer(widget_name, page_nb)

Rendering function.

This function is meant to be scheduled on the GLib main loop. When run, it will go through the following steps:

• check if the job’s result is not already available in the cache

• render it in a new ImageSurface if necessary

• store it in the cache if it was not added there since the beginning of the process and the widget configuration is still valid

Parameters:

• widget_name (str) – name of the concerned widget

• page_nb (int) – number of the page to store in the cache

pympress.scribble – Manage user drawings on the current slide

class pympress.scribble.Scribbler(config, builder, notes_mode)

Bases: Builder

UI that allows to draw free-hand on top of the current slide.

Parameters:

• config (Config) – A config object containing preferences

• builder (Builder) – A builder from which to load widgets

• notes_mode (bool) – The current notes mode, i.e. whether we display the notes on second slide

scribbling_mode = False

Whether we are displaying the interface to scribble on screen and the overlays containing said scribbles

scribble_list = []

list of scribbles to be drawn, as tuples of color RGBA, width int, a list of points, and a list of pressure values.

scribble_redo_list = []

list of undone scribbles to possibly redo

scribble_drawing = False

Whether the current mouse movements are drawing strokes or should be ignored

scribble_color = Gdk.RGBA(red=1.000000, green=1.000000, blue=1.000000, alpha=1.000000)

RGBA current color of the scribbling tool

scribble_width = 1

int current stroke width of the scribbling tool

scribble_overlay = None

HBox that replaces normal panes when scribbling is on, contains buttons and scribble drawing area.

scribble_p_da = None

DrawingArea for the scribbles in the Presenter window. Actually redraws the slide.

scribble_c_eb = None

EventBox for the scribbling in the Content window, captures freehand drawing

scribble_p_eb = None

EventBox for the scribbling in the Presenter window, captures freehand drawing

scribble_p_frame = None

AspectFrame for the slide in the Presenter’s highlight mode

c_da = None

The DrawingArea in the content window

scribble_color_selector = None

The ColorButton selecting the color of the pen

scribble_width_selector = None

The Scale selecting the size of the pen

mouse_pos = None

The position of the mouse on the slide as tuple of float

scribble_cache = None

A Surface to hold drawn highlights

next_render = 0

The next scribble to render (i.e. that is not rendered in cache)

scribble_undo = None

Button for removing the last drawn scribble

scribble_redo = None

Button for drawing the last removed scribble

scribble_clear = None

Button for removing all drawn scribbles

scribble_off_render = None

A OffscreenWindow where we render the scribbling interface when it’s not shown

p_central = None

Box in the Presenter window, where we insert scribbling.

zoom_stop_button = None

Button that is clicked to stop zooming, unsensitive when there is no zooming

active_preset = -1

int that is the currently selected element

previous_preset = -1

int to remember the previously selected element, before holding “eraser”

toggle_erase_source = None

str or None that indicates whether a modifier + click or a held shortcut is toggling the eraser

highlight_mode = 'single-page'

remembered_scribbles = {}

dict of scribbles per page

current_page = (None, None)

tuple of (int, str) indicating the current page number and label

preset_toolbar = None

Box containing the presets

scribble_toolbar = None

Box containing the scribble buttons

scribble_color_toolbox = None

Box containing the scribble color and width selectors

on_draw()

callback, to be connected to on_draw()

track_motions()

callback, to be connected to track_motions()

track_clicks()

callback, to be connected to track_clicks()

load_layout()

callback, to be connected to load_layout()

redraw_current_slide()

callback, to be connected to redraw_current_slide()

resize_cache()

callback, to be connected to resize_widget()

get_slide_point()

callback, to be connected to get_slide_point()

start_zooming()

callback, to be connected to start_zooming()

stop_zooming()

callback, to be connected to stop_zooming()

scribble_preset_buttons = []

The list containing the radio buttons ModelButton

tools_orientation = 'vertical'

str indicating the current layout of the highlight toolbar

page_change_exits = True

bool indicating whether we exit highlighting mode on page change

toggle_erase_modifiers = []

list that contains the modifiers which, when held on scribble start, toggle the eraser

toggle_erase_shortcuts = []

list that contains the non-modifier shortcuts which, when held on scribble start, toggle the eraser

pen_action = None

The Action that contains the currently selected pen

page_change_action(gaction, param)

Change whether we exit or stay in highlighting mode on page changes

Parameters:

• gaction (Action) – the action triggering the call

• param (Variant) – the new mode as a string wrapped in a GLib.Variant

set_mode(gaction, param)

Change the mode of clearing and restoring highlights

Parameters:

• gaction (Action) – the action triggering the call

• param (Variant) – the new mode as a string wrapped in a GLib.Variant

try_cancel()

Cancel scribbling, if it is enabled.

Returns:

True if scribbling got cancelled, False if it was already disabled.

Return type:

bool

static parse_color(text)

Transform a string to a Gdk object in a single function call

Parameters:

text (str) – A string describing a color

Returns:

A new color object parsed from the string

Return type:

RGBA

points_to_curves(points)

Transform a list of points from scribbles to bezier curves

Returns:

control points of a bezier curves to draw

Return type:

list

track_scribble(widget, event)

Draw the scribble following the mouse’s moves.

Parameters:

• widget (Widget) – the widget which has received the event.

• event (Event) – the GTK event.

Returns:

whether the event was consumed

Return type:

bool

key_event(widget, event)

Handle key events to activate the eraser while the shortcut is held

Parameters:

• widget (Widget) – the widget which has received the event.

• event (Event) – the GTK event.

Returns:

whether the event was consumed

Return type:

bool

toggle_scribble(widget, event)

Start/stop drawing scribbles.

Parameters:

• widget (Widget) – the widget which has received the event.

• event (Event) – the GTK event.

Returns:

whether the event was consumed

Return type:

bool

reset_scribble_cache()

Clear the cached scribbles.

prerender()

Commit scribbles to cache so they are faster to draw on the slide

render_scribble(cairo_context, color, width, points, pressures)

Draw a single scribble, i.e. a bezier curve, on the cairo context

Parameters:

• cairo_context (Context) – The canvas on which to render the drawings

• color (RGBA) – The color of the scribble

• width (float) – The width of the curve

• points (list) – The control points of the curve, scaled to the surface.

• pressures (list) – The relative line width at each point as float values in 0..1

draw_scribble(widget, cairo_context)

Perform the drawings by user.

Parameters:

• widget (DrawingArea) – The widget where to draw the scribbles.

• cairo_context (Context) – The canvas on which to render the drawings

update_color(widget)

Callback for the color chooser button, to set scribbling color.

Parameters:

widget (ColorButton) – the clicked button to trigger this event, if any

update_width(widget, event, value)

Callback for the width chooser slider, to set scribbling width.

Parameters:

• widget (Scale) – The slider control used to select the scribble width

• event (Event) – the GTK event triggering this update.

• value (int) – the width of the scribbles to be drawn

update_active_color_width()

Update modifications to the active scribble color and width, on the pen button and config object

adjust_buttons()

Properly enable and disable buttons based on scribblings lists.

clear_scribble(*args)

Callback for the scribble clear button, to remove all scribbles.

page_change(page_number, page_label)

Called when we change pages, to clear or restore scribbles

Parameters:

• page_number (int) – The number of the new page

• page_label (str) – The label of the new page

pop_scribble(*args)

Callback for the scribble undo button, to undo the last scribble.

redo_scribble(*args)

Callback for the scribble undo button, to undo the last scribble.

on_configure_da(widget, event)

Transfer configure resize to the cache.

Parameters:

• widget (Widget) – the widget which has been resized

• event (Event) – the GTK event, which contains the new dimensions of the widget

set_tools_orientation(gaction, target)

Changes the orientation of the highlighting tool box.

Parameters:

• gaction (Action) – the action triggering the call

• target (Variant) – the new orientation to set, as a string wrapped in a GLib.Variant

Returns:

whether the preset was loaded

Return type:

bool

adjust_tools_orientation()

Actually change the highlight tool elements orientations according to self.tools_orientation

switch_scribbling(gaction, target=None)

Starts the mode where one can read on top of the screen.

Args:

Returns:

whether the event was consumed

Return type:

bool

enable_scribbling()

Enable the scribbling mode.

Returns:

whether it was possible to enable (thus if it was not enabled already)

Return type:

bool

disable_scribbling()

Disable the scribbling mode.

Returns:

whether it was possible to disable (thus if it was not disabled already)

Return type:

bool

load_preset(gaction=None, target=None)

Loads the preset color of a given number or designed by a given widget, as an event handler.

Parameters:

• gaction (Action) – the action triggering the call

• target (Variant) – the new preset to load, as a string wrapped in a GLib.Variant

Returns:

whether the preset was loaded

Return type:

bool

on_eraser_button_draw(widget, cairo_context)

Handle drawing the eraser button.

Parameters:

• widget (Widget) – the widget to update

• cairo_context (Context) – the Cairo context (or None if called directly)

on_preset_button_draw(widget, cairo_context)

Handle drawing the marker/pencil buttons, with appropriate thickness and color.

Parameters:

• widget (Widget) – the widget to update

• cairo_context (Context) – the Cairo context (or None if called directly)

pympress.pointer – Manage when and where to draw a software-emulated laser pointer on screen

class pympress.pointer.PointerMode(value, names=<not given>, *values, module=None, qualname=None, type=None, start=1, boundary=None)

Bases: Enum

Possible values for the pointer.

CONTINUOUS = 2

Pointer switched on continuously

MANUAL = 1

Pointer switched on only manual

DISABLED = 0

Pointer never switched on

class pympress.pointer.Pointer(config, builder)

Bases: object

Manage and draw the software “laser pointer” to point at the slide.

Displays a pointer of chosen color on the current slide (in both windows), either on all the time or only when clicking while ctrl pressed.

Parameters:

• config (Config) – A config object containing preferences

• builder (Builder) – A builder from which to load widgets

pointer = <GdkPixbuf.Pixbuf object at 0x7fcd5a0065c0 (GdkPixbuf at 0x564317d21240)>

Pixbuf to read XML descriptions of GUIs and load them.

pointer_pos = (0.5, 0.5)

(float, float) of position relative to slide, where the pointer should appear

show_pointer = False

bool indicating whether we should show the pointer

pointer_mode = 1

PointerMode indicating the pointer mode

old_pointer_mode = 2

The PointerMode to which we toggle back

p_da_cur = None

DrawingArea Slide in the Presenter window, used to reliably set cursors.

c_da = None

DrawingArea Slide in the Contents window, used to reliably set cursors.

c_frame = None

AspectFrame Frame of the Contents window, used to reliably set cursors.

pointermode_radios = {}

a dict of the RadioMenuItem selecting the pointer mode

config = None

A reference to the UI’s Config, to update the pointer preference

redraw_current_slide()

callback, to be connected to redraw_current_slide()

set_action_state = None

callback, to be connected to set_action_state()

load_pointer(name)

Perform the change of pointer using its color name.

Parameters:

name (str) – Name of the pointer to load

change_pointercolor(action, target)

Callback for a radio item selection as pointer mode (continuous, manual, none).

Parameters:

• action (Action) – The action activatd

• target (Variant) – The selected mode

activate_pointermode(mode=None)

Activate the pointer as given by mode.

Depending on the given mode, shows or hides the laser pointer and the normal mouse pointer.

Parameters:

mode (PointerMode) – The mode to activate

change_pointermode(action, target)

Callback for a radio item selection as pointer mode (continuous, manual, none).

Parameters:

• action (Action) – The action activatd

• target (Variant) – The selected mode

render_pointer(cairo_context, ww, wh)

Draw the laser pointer on screen.

Parameters:

• cairo_context (Context) – The canvas on which to render the pointer

• ww (int) – The widget width

• wh (int) – The widget height

track_pointer(widget, event)

Move the laser pointer at the mouse location.

Parameters:

• widget (Widget) – the widget which has received the event.

• event (Event) – the GTK event.

Returns:

whether the event was consumed

Return type:

bool

track_enter_leave(widget, event)

Switches laser off/on in continuous mode on leave/enter slides.

In continuous mode, the laser pointer is switched off when the mouse leaves the slide (otherwise the laser pointer “sticks” to the edge of the slide). It is switched on again when the mouse reenters the slide.

Parameters:

• widget (Widget) – the widget which has received the event.

• event (Event) – the GTK event.

Returns:

whether the event was consumed

Return type:

bool

toggle_pointer(widget, event)

Track events defining when the laser is pointing.

Parameters:

• widget (Widget) – the widget which has received the event.

• event (Event) – the GTK event.

Returns:

whether the event was consumed

Return type:

bool

pympress.editable_label – A label that can be swapped out for an editable entry

class pympress.editable_label.EditableLabel

Bases: object

A label that can switch between simply displaying a value, and allowing user input to edit this value.

event_box = None

EventBox around the label, used to sense clicks

editing = False

bool tracking whether we are currently editing the label.

on_label_event(widget_or_action, event=None)

Manage events on the current slide label/entry.

This function triggers replacing the label with an entry when clicked or otherwise toggled.

Parameters:

• widget (Widget) – the widget in which the event occurred

• event (Event or None) – the event that occurred, None if tf we called from a menu item

Returns:

whether the event was consumed

Return type:

bool

validate()

Validate the input to the label. Needs to be reimplemented by children classes.

cancel()

Cancel editing the label. Needs to be reimplemented by children classes.

on_keypress(widget, event)

Manage key presses for the editable label. Needs to be reimplemented by children classes.

If we are editing the label, intercept some key presses (to validate or cancel editing or other specific behaviour), otherwise pass the key presses on to the button for normal behaviour.

Parameters:

• widget (Widget) – the widget which has received the event.

• event (Event) – the GTK event.

• name (str) – the name of the key stroke

• command (str) – the name of the command in case this function is called by on_key_input

Returns:

whether the event was consumed

Return type:

bool

try_cancel()

Cancel editing the label, if it is being edited.

Returns:

True if editing got cancelled, False if the label was not being edited.

Return type:

bool

try_validate()

Validate the page choice, if the page label is being edited.

Returns:

True if editing got validated, False if the label was not being edited.

Return type:

bool

swap_label_for_entry()

Perform the actual work of starting the editing.

restore_label()

Make sure that the editable label is not in entry mode.

If it is an entry, then replace it with the label.

start_editing()

Start the editing of the label if it is disabled.

stop_editing()

Disable the editing of the label if it was enabled.

class pympress.editable_label.PageNumber(builder, page_num_scroll)

Bases: EditableLabel

A label that displays “current page / max page”, that can be edited to select a page to which to go.

Parameters:

builder (Builder) – A builder from which to load widgets

label_cur = None

Slide counter Label for the current slide.

label_last = None

Slide counter Label for the last slide.

eb_cur = None

EventBox associated with the slide counter label in the Presenter window.

hb_cur = None

HBox containing the slide counter label in the Presenter window.

spin_cur = None

SpinButton used to switch to another slide by typing its number.

edit_label = None

Entry used to switch to another slide by typing its label.

label_sep = None

Label separating spin_cur and edit_label

max_page_number = 1

int holding the maximum page number in the document

page_labels = True

bool holding whether we display or ignore page labels

find_label()

callback, to be connected to lookup_label()

label_before()

callback, to be connected to label_after()

label_after()

callback, to be connected to label_before()

invert_scroll = True

bool whether to scroll with the pages (True) or with the page numbers (False)

goto_page()

callback, to be connected to goto()

page_change()

callback, to be connected to do_page_change()

setup_doc_callbacks(doc)

Callbacks that need to be setup again at every new document

Parameters:

doc (Document) – The new document that got loaded

set_last(num_pages)

Set the max number of pages, both on display and as the range of values for the spinner.

Parameters:

num_pages (int) – The maximum page number

enable_labels(enable)

Allow one to use or ignore labels.

Parameters:

enable (bool) – Whether to enable labels

changed_page_label(*args)

Get the page number from the spinner and go to that page.

validate()

Get the page number from the spinner and go to that page.

cancel(gaction=None, param=None)

Make the UI re-display the pages from before editing the current page.

on_keypress(widget, event)

Implement directions (left/right/home/end) keystrokes.

Otherwise pass on to do_key_press_event().

on_scroll(widget, event)

Scroll event. Pass it on to the spin button if we’re currently editing the page number.

Parameters:

• widget (Widget) – the widget which has received the event.

• event (Event) – the GTK event.

Returns:

whether the event was consumed

Return type:

bool

swap_label_for_entry(hint=None)

Perform the actual work of starting the editing.

restore_label()

Make sure that the current page number is displayed in a label and not in an entry.

If it is an entry, then replace it with the label.

update_page_numbers(cur_nb, label)

Update the displayed page numbers.

Parameters:

• cur_nb (int) – The current page number, in documentation numbering (range [0..max - 1])

• label (str) – The current page label

class pympress.editable_label.EstimatedTalkTime(builder)

Bases: EditableLabel

A label that displays the time elapsed since the start of the talk, that can be edited to select talk duration.

The duration of the talk will cause the label to blink and change colour as the elapsed time gets closer to the targeted talk duration.

Parameters:

builder (builder.Builder) – The builder from which to load widgets.

label_time = None

Elapsed time Label.

label_ett = None

Estimated talk time Label for the talk.

eb_ett = None

EventBox associated with the estimated talk time.

est_time = 0

Estimated talk time, int in seconds.

stop_editing_page_number()

callback, to be connected to stop_editing()

entry_ett = None

Entry used to set the estimated talk time.

validate()

Update estimated talk time from the input.

set_time(gaction, param)

Set the talk time.

Parameters:

• gaction (Action) – the action triggering the call

• param (Variant) – The time in seconds, as an int64 variant

on_keypress(widget, event)

Pass on keystrokes to do_key_press_event().

swap_label_for_entry(*args)

Perform the actual work of starting the editing.

restore_label(gaction=None, param=None)

Make sure that the current page number is displayed in a label and not in an entry.

If it is an entry, then replace it with the label.

pympress.talk_time – Manages the clock of elapsed talk time

class pympress.talk_time.TimeLabelColorer(label_time)

Bases: object

Manage the colors of a label with a set of colors between which to fade, based on how much time remains.

Times are given in seconds (<0 has run out of time). In between timestamps the color will interpolated linearly, outside of the intervals the closest color will be used.

Parameters:

label_time (Gtk.Label) – the label where the talk time is displayed

label_time = None

The Gtk.Label whose colors need updating

color_override = None

CssProvider affecting the style context of the labels

label_color_default = None

RGBA The default color of the info labels

color_map = []

list of tuples (int, RGBA), which are the desired colors at the corresponding timestamps. Sorted on the timestamps.

load_color_from_css(style_context, class_name=None)

Add class class_name to the time label and return its color.

Parameters:

• label_time (Gtk.Label) – the label where the talk time is displayed

• style_context (StyleContext) – the CSS context managing the color of the label

• class_name (str or None) – The name of the class, if any

Returns:

The color of the label with class “class_name”

Return type:

RGBA

default_color()

Forces to reset the default colors on the label.

update_time_color(remaining)

Update the color of the time label based on how much time is remaining.

Parameters:

remaining (int) – Remaining time until estimated talk time is reached, in seconds.

class pympress.talk_time.TimeCounter(builder, ett, timing_tracker, autoplay)

Bases: object

A double counter, that displays the time elapsed in the talk and a clock.

Parameters:

• builder (builder.Builder) – The builder from which to load widgets.

• ett (int) – the estimated time for the talk, in seconds.

• timing_tracker – (TimingReport): to inform when the slides change

• autoplay – (AutoPlay): to adjust the timer display if we’re auto-playing/looping slides

label_time = None

Elapsed time Label

label_clock = None

Clock Label

restart_time = 0

Time at which the counter was started, int in seconds as returned by time()

elapsed_time = 0

Time elapsed since the beginning of the presentation, int in seconds

paused = True

Timer paused status, bool

label_colorer = None

TimeLabelColorer that handles setting the colors of label_time

ett = None

EstimatedTalkTime that handles changing the ett

timing_tracker = None

The TimingReport, needs to know when the slides change

autoplay = None

The AutoPlay, to adjust the timer display if we’re auto-playing/looping slides

pause_action = None

The pause-timer Action

switch_pause(gaction, param=None)

Switch the timer between paused mode and running (normal) mode.

Returns:

whether the clock’s pause was toggled.

Return type:

bool

pause()

Pause the timer if it is not paused, otherwise do nothing.

Returns:

whether the clock’s pause was toggled.

Return type:

bool

unpause()

Unpause the timer if it is paused, otherwise do nothing.

Returns:

whether the clock’s pause was toggled.

Return type:

bool

reset_timer(*args)

Reset the timer.

current_time()

Returns the time elapsed in the presentation.

Returns:

the time since the presentation started in seconds.

Return type:

int

update_time()

Update the timer and clock labels.

Returns:

True (to prevent the timer from stopping)

Return type:

bool

pympress.config – Configuration

class pympress.config.Config

Bases: ConfigParser, object

Manage configuration :Get the configuration from its file and store its back.

layout = {}

dict-tree of presenter layouts for various modes

static_layout = {'deck-overview': 'deck'}

dict-tree of presenter layouts that are not configurable

placeable_widgets = {'annotations': 'p_frame_annot', 'current': 'p_frame_cur', 'highlight': 'scribble_overlay', 'next': 'grid_next', 'notes': 'p_frame_notes'}

dict of strings that are the valid representations of widgets from the presenter window that can be dynamically rearranged, mapping to their names

widget_reqs = {'highlight': ({'highlight'}, {'annotations', 'current', 'next', 'notes'}), 'highlight_notes': ({'highlight'}, {'annotations', 'current', 'next', 'notes'}), 'note_pages': ({'annotations', 'next', 'notes'},), 'notes': ({'current', 'next', 'notes'}, {'annotations'}), 'plain': ({'annotations', 'current', 'next'},)}

dict mapping layout ids to tuples of their expected and optional widgets

shortcuts = {}

dict mapping accelerator keys to actions

static path_to_config(search_legacy_locations=False)

Return the path to the currently used configuration file.

Parameters:

search_legacy_locations (bool) – whether to look in previously used locations

Returns:

The path to the config file to use

Return type:

Path

static toggle_portable_config(gaction, param=None)

Create or remove a configuration file for portable installs.

The portable install file will be used by default, and deleting it causes the config to fall back to the user profile location.

No need to populate the new config file, this will be done on pympress exit.

Parameters:

• gaction (Action) – the action triggering the call

• param (Variant) – the parameter as a variant, or None

static using_portable_config()

Checks which configuration file location is in use.

Returns:

True iff we are using the portable (i.e. in install dir) location

Return type:

bool

register_actions(builder)

Register actions that impact the config file only.

Parameters:

builder (pympress.builder.Builder) – a builder to setup the actions

upgrade()

Update obsolete config options when pympress updates.

getlist(*args)

Parse a config value and return the list by splitting the value on commas.

i.e. bar = foo,qux returns the list [‘foo’, ‘qux’]

Returns:

a config value split into a list.

Return type:

list

getint(*args, **kwargs)

Wrapper for configparser’s getint to handle parsing errors when a fallback is given.

See getint()

getfloat(*args, **kwargs)

Wrapper for configparser’s to handle parsing errors when a fallback is given.

See getfloat()

getboolean(*args, **kwargs)

Wrapper for configparser’s getboolean to handle parsing errors when a fallback is given.

getboolean()

save_config()

Save the configuration to its file.

toggle_start(gaction, param=None)

Generic function to toggle some boolean startup configuration.

Parameters:

• gaction (Action) – the action triggering the call

• param (Variant) – the parameter as a variant, or None

validate_layout(layout, expected_widgets, optional_widgets={})

Validate layout: check whether the layout of widgets built from the config string is valid.

Parameters:

• layout (dict) – the json-parsed config string

• expected_widgets (set) – strings with the names of widgets that have to be used in this layout

• optional_widgets (set) – strings with the names of widgets that may or may not be used in this layout

Layout must have all self.placeable_widgets (leaves of the tree, as str) and only allowed properties on the nodes of the tree (as dict).

Constraints on the only allowed properties of the nodes are: - resizeable: bool (optional, defaults to no), - orientation: str, either “vertical” or “horizontal” (mandatory) - children: list of size >= 2, containing str`s or `dict`s (mandatory) - proportions: `list of float with sum = 1, length == len(children), representing the relative sizes of all the resizeable items (if and only if resizeable).

update_layout_tree(layout_name, layout)

Update the layout named layout_name. Throws ValueError on invalid layouts.

Parameters:

• layout_name (str) – the name of the layout to update

• layout (dict) – the hierarchy of dictionaries, lists, and strings representing the layout

load_window_layouts()

Parse and validate layouts loaded from config, with fallbacks if needed.

widget_layout_to_tree(widget, pane_handle_pos)

Build a tree representing a widget hierarchy, leaves are strings and nodes are dict.

Recursive function. See validate_layout() for more info on the tree structure.

Parameters:

• widget (Widget) – the widget where to start

• pane_handle_pos (dict) – Map of Paned to the relative handle position (float in 0..1)

Returns:

A tree of dicts reprensenting the widget hierarchy

Return type:

dict

get_layout(layout_name)

Getter for the layout_name layout.

update_layout_from_widgets(layout_name, widget, pane_handle_pos)

Setter for the notes layout.

Parameters:

• layout_name (str) – the name of the layout to update

• widget (Widget) – the widget that will contain the layout.

• pane_handle_pos (dict) – Map of Paned to the relative handle position (float in 0..1)

pympress.extras – Manages the display of fancy extras such as annotations, videos and cursors

class pympress.dialog.TimingReport(parent)

Bases: Builder

Widget tracking and displaying hierachically how much time was spent in each page/section of the presentation.

page_time = []

list of time at which each page was reached

end_time = -1

int the time at which the clock was reset

timing_treeview = None

The TreeView containing the timing data to display in the dialog

time_report_dialog = None

A Dialog to contain the timing to show

clear_on_next_transition = False

bool marking whether next page transition should reset the history of page timings

doc_structure = {}

A dict containing the structure of the current document

page_labels = []

A list with the page label of each page of the current document

document_open = False

bool tracking whether a document is opened

transition(page, time)

Record a transition time between slides.

Parameters:

• page (int) – the page number of the current slide

• time (int) – the number of seconds elapsed since the beginning of the presentation

reset(reset_time)

A timer reset. Clear the history as soon as we start changing pages again.

static format_time(secs)

Formats a number of seconds as minutes:seconds.

Returns:

The formatted time, with 2+ digits for minutes and 2 digits for seconds.

Return type:

str

set_document_metadata(doc_structure, page_labels)

Show the popup with the timing infortmation.

Parameters:

• doc_structure (dict) – the structure of the document

• page_labels (list) – the page labels for each of the pages

show_report(gaction, param=None)

Show the popup with the timing infortmation.

Parameters:

• gaction (Action) – the action triggering the call

• param (Variant) – the parameter as a variant, or None

class pympress.dialog.LayoutEditor(parent, config)

Bases: Builder

Widget tracking and displaying hierachically how much time was spent in each page/section of the presentation.

layout_treeview = None

The TreeView displaying the hierarchical layouts

layout_treemodel = None

The TreeModel containing the model of the layouts to view in the treeview

orientations_model = None

The ListModel containing the possible orientations

layout_dialog = None

A Dialog to contain the layout edition dialog

layout_description = None

A Label to contain the description of the layout

layout_selector = None

A ComboBoxText to select the layout to edit

next_frames_action = None

Action containing the number of next frames

hltools_orientation_action = None

Action containing the orientation

current_layout = 'plain'

str containing the layout currently edited

layout_descriptions = {'highlight': 'Layout to draw on the current slide', 'highlight_notes': 'Layout to draw on the current slide with notes displayed', 'note_pages': 'Layout for libreoffice notes on separate pages (with current slide preview in notes)', 'notes': 'Layout for beamer notes on second screen (no current slide preview in notes)', 'plain': 'Plain layout, without note slides'}

config = None

Config to remember preferences

ui_load_layout()

callback, to be connected to load_layout()

load_layout()

Load the given layout in the treemodel for display and manipulation in the treeview

set_current_layout(layout)

Update which is the layout currently used by the UI

Parameters:

layout (str) – the layout id

layout_selected(widget, event=None)

Manage events for the layout selector drop-down menu

Parameters:

• widget (ComboBox) – the widget which has been modified

• event (Event) – the GTK event

get_info(path)

Given a path string, look up the appropriate item in both the actual and GtkStore models

Parameters:

path (str) – A string representing a path in the treemodel

Returns:

the node and iterator representing the position in the layout and model

Return type:

dict, TreeIter

resizeable_toggled(widget, path)

Handle when box’ resizeable value is toggled

Parameters:

• widget (ComboBox) – the widget which has been modified

• path (str) – A string representing the path to the modified item

orientation_changed(widget, path, orient_it)

Handle when the orientation of a box is changed

Parameters:

• widget (ComboBox) – the widget which has been modified

• path (str) – A string representing the path to the modified item

• orient_it (TreeIter) – the row of the newly selected value in the orientations liststore model

next_slide_count_edited(widget, path, value)

Handle when the next slide count is modified

Parameters:

• widget (ComboBox) – the widget which has been modified

• path (str) – A string representing the path to the modified item

• value (int) – the new number of next slides

treemodel_to_tree(iterator, parent_horizontal=False, parent_resizeable=False)

Recursive function to transform the treemodel back into our dict-based representation of the layout

Parameters:

• iterator (TreeIter) – the position in the treemodel

• parent_horizontal (bool) – whether the parent node is horizontal

• parent_resieable (bool) – whether the parent node is resizeable

Returns:

the list of dict or str representing the widgets at this level

Return type:

list

normalize_layout(widget=None, drag_context=None, reload=True)

Handler at the end of a drag-and-drop in the treeview

Here we transform the listmodel modified by drag-and-drop back to a valid dict and str hierarchy, and then trigger the loading of the layout again to display the corrected layout.

Parameters:

• widget (Widget) – The object which received the signal

• drag_context (DragContext) – the drag context

• reload (bool) – whether to reload the layout into the treemodel

show_editor(gaction, param=None)

Show the popup to edit the layout. Gather info to populate it, and handle apply/cancel at the end.

Parameters:

• gaction (Action) – the action triggering the call

• param (Variant) – the parameter as a variant, or None

class pympress.dialog.AutoPlay(parent)

Bases: Builder

Widget and machinery to setup and play slides automatically, optionally in a loop

autoplay_dialog = None

A Dialog to contain the layout edition dialog

autoplay_spin_lower = None

The SpinButton for the lower page

autoplay_spin_upper = None

The SpinButton for the upper page

autoplay_spin_time = None

The SpinButton for the transition between slides

autoplay_button_loop = None

The CheckButton to loop

source = None

Source which is the source id of the periodic slide transition, or None if there is no autoplay

remain = None

if the timeout has been paused, int which represents the number of milliseconds until the next page slide

goto_page()

callback, to be connected to goto_page()

set_doc_pages(n_pages)

Callback for when a document number of pages changes

Parameters:

n_pages (int) – the number of pages of the loaded document

page_changed(spin_button, scroll_direction)

Callback for when a page spin button is modified, maintains a delta of at least 2 pages between first and last page of the intended loop. (No loops needed to loop a single slide.)

Parameters:

• spin_button (SpinButton) – The button whose value was changed

• scroll_direction (ScrollType) – The speed and amount of change

pause()

Pause the looping if it’s running

unpause()

Unpause the looping if it’s paused

is_looping()

Return whether an auto-playing

stop_looping()

Stop the auto-playing

start_looping()

Start the auto-playing

next_page(it)

Callback to turn the page to the next slide

Parameters:

it (iterator) – An iterator that contains the next pages to load. Stop when there are no more pages.

Returns:

True if he callback needs to be called again, otherwise False

Return type:

bool

get_page_range()

Return the autoplay info

Returns:

(first page, stop page, looping, delay i ms)

Return type:

tuple

run(gaction, param=None)

Show the dialog to setup auto-play, and start the autoplay if « apply » is selected

Parameters:

• gaction (Action) – the action triggering the call

• param (Variant) – the parameter as a variant, or None

pympress.extras – Manages the display of fancy extras such as annotations, videos and cursors

class pympress.extras.Annotations(builder)

Bases: object

Widget displaying a PDF’s text annotations.

annotations_treeview = None

The containing TreeView widget for the annotations

annotations_liststore = None

The containing ListStore storing the annotations to be displayed

annotation_column = None

The TreeViewColumn where the text is rendered

annotation_renderer = None

The CellRendererText defining how text is rendered

editing = None

The Entry in which we are currently editing an annotation, or None

new_doc_annotation()

set_doc_annotation()

remove_doc_annotation()

load_annotations(annot_page)

Add annotations to be displayed (typically on going to a new slide).

Parameters:

annot_page (Page) – The page object that contains the annotations

try_cancel()

Try to cancel editing

Returns:

whether editing was enabled and thus canceled

Return type:

bool

rewrap_annotations()

Update the wrap-width of the annotation column to fit its actual width

key_event(widget, event)

Handle a key (press/release) event.

Needed to forward events directly to the Entry, bypassing the global action accelerators.

Parameters:

• widget (Widget) – the widget which has received the event.

• event (Event) – the GTK event.

Returns:

whether the event was consumed

Return type:

bool

editing_started(cell_renderer, widget, entry_number)

Handle edit start

Parameters:

• cell_renderer (CellRenderer) – The renderer which received the signal

• widget (CellEditable) – the Gtk entry editing the annotation entry

• entry_number (str) – the string representation of the path identifying the edited cell

editing_validated(cell_renderer, entry_number, new_content)

Handle successful edit: store the new cell value in the model and the document

Parameters:

• cell_renderer (CellRenderer) – The renderer which received the signal

• entry_number (str) – the string representation of the path identifying the edited cell

• new_content (str) – the new value of the edited cell

editing_finished(cell_renderer)

Handle the end of editing

Parameters:

cell_renderer (CellRenderer) – The renderer which received the signal

add_annotation(gaction, param=None)

Add an annotation to the the page’s annotation list

Parameters:

• gaction (Action) – the action triggering the call, which identifies which backend

• param (Variant) – an optional parameter

remove_annotation(gaction, param=None)

Remove an annotation to the from the page’s annotation list

Parameters:

• gaction (Action) – the action triggering the call, which identifies which backend

• param (Variant) – an optional parameter

class pympress.extras.Media(builder, conf)

Bases: object

Class managing statically the medias and media player backends, to enable play/pause callbacks.

Parameters:

• builder (Builder) – A builder from which to load widgets

• conf (Config) – An object containing the preferences

c_overlay = None

Overlay for the Content window.

p_overlay = None

Overlay for the Presenter window.

types_list = {}

dict containing backends and their mappings to mime type lists for which they are enabled. A default backend is marked by an empty list.

toggle(gaction, param=None)

Toggle a backend (if it was loaded correctly)

Parameters:

• gaction (Action) – the action triggering the call, which identifies which backend

• param (Variant) – an optional parameter

remove_media_overlays()

Remove current media overlays.

purge_media_overlays()

Remove current media overlays.

replace_media_overlays(current_page, page_type)

Remove current media overlays, add new ones if page contains media.

Parameters:

• current_page (Page) – The page for which to prepare medias

• page_type (PdfPage) – The part of the page to consider

resize(which=None)

Resize all media overlays that are a child of an overlay.

adjust_margins_for_mode(page_type)

Adjust the relative margins of child widgets for notes mode update.

Parameters:

page_type (PdfPage) – The part of the page to display

play(media_id, gaction=None, param=None)

Starts playing a media. Used as a callback.

Parameters:

• media_id (int) – A unique identifier of the media to start playing

• gaction (Action) – the action triggering the call

• param (Variant) – the parameter as a variant, or None

hide(media_id, gaction=None, param=None)

Stops playing a media and hides the player. Used as a callback.

Parameters:

• media_id (int) – A unique identifier of the media to start playing

• gaction (Action) – the action triggering the call

• param (Variant) – the parameter as a variant, or None

hide_all()

Stops all playing medias and hides the players. Used before exit.

play_pause(media_id, gaction=None, param=None)

Toggles playing and pausing a media. Used as a callback.

Parameters:

• media_id (int) – A unique idientifier of the media to start playing

• gaction (Action) – the action triggering the call

• param (Variant) – the parameter as a variant, or None

set_time(media_id, gaction=None, param=None)

Set the player of a given media at time t. Used as a callback.

Parameters:

• media_id (int) – A unique idientifier of the media to start playing

• gaction (Action) – the action triggering the call

• param (Variant) – A wrapped float containing the time to which we have to go.

get_factory(mime_type)

Returns a class of type _backend.

class pympress.extras.Cursor

Bases: object

Class managing cursors statically for displays, so we can select the mouse cursor with a simple string.

classmethod set_cursor(widget, cursor_name='parent')

Set the cursor named cursor_name’.

Parameters:

• widget (Widget) – The widget triggering the cursor change, used to retrieve a Gdk.Window

• cursor_name (str) – Name of the cursor to be set

class pympress.extras.Zoom(builder)

Bases: object

Manage the zoom level (using a cairo matrix), draw area that will be zoomed while it is being selected.

Parameters:

builder (Builder) – A builder from which to load widgets

zoom_selecting = False

Whether we are displaying the interface to scribble on screen and the overlays containing said scribbles

zoom_points = None

scale = 1.0

shift = (0, 0)

p_central = None

Box in the Presenter window, used to reliably set cursors.

redraw_current_slide()

callback, to be connected to redraw_current_slide()

clear_cache()

callback, to be connected to clear_cache()

set_action_enabled = None

callback, to be connected to set_action_enabled()

start_zooming(*args)

Setup for the user to select the zooming area.

Returns:

whether the event was consumed

Return type:

bool

stop_zooming(*args)

Cancel the zooming, reset the zoom level to full page.

Returns:

whether the event was consumed

Return type:

bool

try_cancel()

Cancel the zoom selection, if it was enabled.

Returns:

True if the zoom was cancelled, False if a zoom selection was not in progress.

Return type:

bool

get_slide_point(widget, event)

Gets the point on the slide on a scale (0..1, 0..1), from its position in the widget.

get_matrix(ww, wh)

Returns the Matrix used to perform the zoom for the widget of size ww x wh.

Parameters:

• ww (float) – widget width

• wh (float) – widget height

Returns:

the zoom transformation matrix

Return type:

Matrix

track_zoom_target(widget, event)

Draw the zoom’s target rectangle.

Parameters:

• widget (Widget) – the widget which has received the event.

• event (Event) – the GTK event.

Returns:

whether the event was consumed

Return type:

bool

toggle_zoom_target(widget, event)

Start/stop drawing the zoom’s target rectangle.

Parameters:

• widget (Widget) – the widget which has received the event.

• event (Event) – the GTK event.

Returns:

whether the event was consumed

Return type:

bool

draw_zoom_target(widget, cairo_context)

Perform the drawings by user.

Parameters:

• widget (DrawingArea) – The widget where to draw the scribbles.

• cairo_context (Context) – The canvas on which to render the drawings

nop(**kwargs)

Do nothing

class pympress.extras.FileWatcher

Bases: object

A class that wraps watchdog objects, to trigger callbacks when a file changes.

timeout = 0

path = None

The Path to the file being watched

callback()

Callback to be called on file changes, usually connected to reload_document()

observer = None

A Observer to watch when the file changes

monitor = None

A FileSystemEventHandler to get notified when the file changes

watch_file(uri, callback, *args, **kwargs)

Watches a new file with a new callback. Removes any precedent watched files.

If the optional watchdog dependency is missing, does nothing.

Parameters:

• uri (str) – URI of the file to watch

• callback (function) – callback to call with all the further arguments when the file changes

stop_watching()

Remove all files that are being watched.

pympress.deck – Manage user drawings on the current slide

class pympress.deck.Overview(config, builder)

Bases: Builder

UI that allows to draw free-hand on top of the current slide.

Parameters:

• config (Config) – A config object containing preferences

• builder (Builder) – A builder from which to load widgets

deck_mode = False

Whether we are displaying the deck overview on screen

deck_viewport = None

Viewport that replaces normal panes when deck is shown

deck_grid = None

Grid that displays all the slides of the overview

deck0 = None

The DrawingArea for the first slide

deck_off_render = None

A OffscreenWindow where we render the deck interface when it’s not shown

p_central = None

Box in the Presenter window, where we insert deck.

resize_cache()

callback, to be connected to resize_widget()

grid_size = (0, 0)

tuple of rows/columns in the grid

c_da = None

The DrawingArea in the content window

cache = None

SurfaceCache instance.

load_layout()

callback, to be connected to load_layout()

goto_page()

callback, to be connected to goto_page()

compute_frame_grid()

callback, to be connected to compute_frame_grid()

max_row_size = 6

int How large (at most) to make rows

all_pages = False

bool whether we show all pages or remove consecutive identically labeled pages, keeping only the last

on_deck_hover(widget, event)

Track when each deck in the slide is hovered

setup_doc_callbacks(doc)

Callbacks that need to be setup again at every new document

Parameters:

doc (Document) – The new document that got loaded

try_cancel()

Cancel deck, if it is enabled.

Returns:

True if deck got cancelled, False if it was already disabled.

Return type:

bool

create_drawing_areas()

Build DrawingArea and AspectFrame elements to display later on

reset_grid(*args)

Set the slides configuration and size in the grid

prerender(da)

Perform in-cache rendering

Parameters:

da (DrawingArea) – the widget for which we’re rendering

on_deck_draw(widget, cairo_context)

Actually draw the deck slide – only do this from cache, to limit overhead

Parameters:

• widget (Widget) – the widget to update

• cairo_context (Context) – the Cairo context (or None if called directly)

on_deck_click(widget, event)

A slide has been clicked, go to it

Parameters:

• widget (Widget) – the widget which has received the key stroke

• event (Event) – the GTK event, which contains the key stroke details

switch_deck_overview(gaction, target=None)

Starts the mode where one can read on top of the screen.

Args:

Returns:

whether the event was consumed

Return type:

bool

enable_deck_overview()

Enable the deck view.

Returns:

whether it was possible to enable (thus if it was not enabled already)

Return type:

bool

disable_deck_overview()

Disable the deck view.

Returns:

whether it was possible to disable (thus if it was not disabled already)

Return type:

bool

pympress.util – various utility functions

pympress.util.get_pympress_meta()

Get metadata (version, etc) from pympress’ __init__.py or git describe.

Returns:

metadata properties (version, contributors) mapped to their values

Return type:

dict

pympress.util.close_opened_resources()

Close all importlib context managers for resources that we needed over the program lifetime.

pympress.util.get_translation(domain)

Returns a gettext translation object.

This re-implements gettext’s translation() and find() to allow using a python 3.9 Traversable as localedir

Returns:

A gettext translation object with the strings for the domain loaded

Return type:

NullTranslations

pympress.util.get_portable_config()

Returns the path to the configuration file for a portable install (i.e. in the install root).

May return None if the install root is not a real directory (e.g. in a zip file).

Returns:

The path to the portable configuration file.

Return type:

Path or None

pympress.util.get_default_config()

Returns the path to the configuration file containing the defaults.

Returns:

The path to the portable configuration file.

Return type:

Path

pympress.util.get_user_config()

Returns the path to the configuration file in the user config directory

Returns:

path to the user configuration file.

Return type:

Path

pympress.util.load_style_provider(style_provider)

Load the css and in a style provider

Parameters:

style_provider (CssProvider) – The style provider in which to load CSS

Returns:

The style provider with CSS loaded

Return type:

CssProvider

pympress.util.get_icon_path(name)

Get the path for an image from pympress’ resources

Parameters:

name (str) – The name of the icon to load

Returns:

The path to the icon to load

Return type:

str

pympress.util.get_ui_resource_file(name, ext='.glade')

Load an UI definition file from pympress’ resources

Parameters:

• name (str) – The name of the UI to load

• ext (str) – The extension of the file

Returns:

The full path to the glade file

Return type:

str

pympress.util.list_icons()

List the icons from pympress’ resources.

Returns:

The paths to the icons in the pixmaps directory

Return type:

list of str

pympress.util.get_log_path()

Returns the appropriate path to the log file in the user app dirs.

Returns:

path to the log file.

Return type:

Path

pympress.util.fileopen(f)

Call the right function to open files, based on the platform.

Parameters:

f (path-like) – path to the file to open

pympress.util.introspect_flag_value(flags_class, nick, fallback)

Get the value of a flag from its class, given a value’s name (or nick)

Introspection technique (in particular __flags_values__ dict) inspired from pygtkcompat. This is needed because there is no typelib for libgstplayback.

Parameters:

• flags_class (a type inheriting from GFlags) – the flags class to introspect

• nick (str) – a name or nick of the flag value that should be returned

• fallback (int) – the documented flag value, if lookup fails

pympress.util.hard_set_screensaver(disabled)

Enable or disable the screensaver.

Parameters:

disabled (bool) – if True, indicates that the screensaver must be disabled; otherwise it will be enabled

exception pympress.util.NoMonitorPositions

Bases: Exception

The Exception we raise when there is no way of figuring out the monitor position of windows

class pympress.util.ScreenArea(obj)

Bases: object

Convenience class to represent monitors or windows in terms of the area (position and size) they use on screen

This is similar to Monitor, but necessary as we want to handle “mirrored” monitors as if they were a single monitor, and only use “extended” monitors as target for content window position and/or fullscreening.

most_intersection(candidates)

Find the rectangle that intersects most with rect in candidates

Parameters:

candidates (iterable of `ScreenArea`s) – The monitor areas to check for intersection

Returns:

The best candidate screen area, i.e. that has the largest intersection

Return type:

ScreenArea

least_intersection(candidates)

Find the rectangle that intersects least with rect in candidates

Parameters:

candidates (iterable of `ScreenArea`s) – The monitor areas to check for intersection

Returns:

The best candidate screen area, i.e. that has the smallest intersection

Return type:

ScreenArea

intersection(other)

Compute the intersection of 2 screen areas

Parameters:

other (ScreenArea) – The screen area to compare with

Returns:

An area representing the intersection, or None if there is no intersection

Return type:

ScreenArea or None

equal(other)

Check whether 2 areas cover the exact same space

Parameters:

other (ScreenArea) – The screen area to compare with

Returns:

True iff the areas are identical

Return type:

bool

contains(other)

Check whether this area contains other

Parameters:

other (ScreenArea) – The screen area to compare with

Returns:

True iff the area is contained

Return type:

bool

intersects(other)

Check whether this area intersects other

Parameters:

other (ScreenArea) – The screen area to compare with

Returns:

True iff the areas have an intersection

Return type:

bool

class pympress.util.Monitor(obj, id_=None, num=None)

Bases: ScreenArea

A specialised ScreenArea representing a monitor, with an descriptive string and a monitor number

name = ''

A str to represent a user-friendly name for the monitor

monitor_number = -1

An int that identifies the monitor in Display

static lookup_monitors(display, *windows)

Get the info on the monitors

Parameters:

• display (Display) – the current screen

• *windows (tuple of Window) – windows for which to look up the monitor position

Returns:

The monitors for each window, followed by the best monitors for presenter and content

Return type:

tuple of Monitor

pympress.util.make_windows_dpi_aware()

Set to avoid blurriness issues on High-DPI resolutions with scaling.

pympress.media_overlays.base – base widget to play videos with an unspecified backend

class pympress.media_overlays.base.VideoOverlay(container, page_type, action_map, media)

Bases: Builder

Simple Video widget.

All do_X() functions are meant to be called from the main thread, through e.g. idle_add(), for thread-safety in the handling of video backends.

Parameters:

• container (Overlay) – The container with the slide, at the top of which we add the movie area

• page_type (PdfPage) – the part of the page to display

• action_map (ActionMap) – the action map that contains the actions for this media

• media (Media) – the object defining the properties of the video such as position etc.

media_overlay = None

VBox that contains all the elements to be overlaid.

toolbar = None

A HBox containing a toolbar with buttons and progress the progress bar

progress = None

Scale that is the progress bar in the controls toolbar - if we have one.

movie_zone = None

DrawingArea where the media is rendered.

rect = None

tuple containing the left/top/right/bottom coordinates of the drawing area in the visible slide

last_timestamp = 0.0

float representing the last know timestamp at which the progress bar updated

dragging_position = False

bool that tracks whether the user is dragging the position

dragging_paused = False

bool that tracks whether the playback was paused when the user started dragging the position

time_format = '{:01}:{:02}'

ss / m:ss when the max time is known

Type:

Format of the video time, defaults to m

Type:

ss, changed to m

maxval = 1

float holding the max time in s

parent = None

Overlay that is the parent of the VideoOverlay widget.

relative_rect = None

tuple containing the left/top/right/bottom coordinates of the drawing area in the PDF page

action_map = None

ActionMap containing the actios for this video overlay

media_type = ''

str representing the mime type of the media file

start_pos = 0.0

float giving the initial starting position for playback

end_pos = None

float giving the end position for playback, if any

autoplay = False

bool that tracks whether we should play automatically

repeat = False

bool that tracks whether we should play after we finished playing

handle_embed(mapped_widget)

Handler to embed the video player in the window, connected to the map signal.

format_millis(sc, prog)

Callback to format the current timestamp (in milliseconds) as minutes:seconds.

Parameters:

• sc (Scale) – The scale whose position we are formatting

• prog (float) – The position of the Scale, i.e. the number of seconds elapsed

update_range(max_time)

Update the toolbar slider size.

Parameters:

max_time (float) – The maximum time in this video in s

update_progress(time)

Update the toolbar slider to the current time.

Parameters:

time (float) – The time in this video in s

progress_moved(rng, sc, val)

Callback to update the position of the video when the user moved the progress bar.

Parameters:

• rng (Range) – The range corresponding to the scale whose position we are formatting

• sc (Scale) – The scale whose position we are updating

• val (float) – The position of the Scale, which is the number of seconds elapsed in the video

play_pause(*args)

Callback to toggle play/pausing from clicking on the DrawingArea

handle_end()

End of the stream reached: restart if looping, otherwise hide overlay

update_margins_for_page(page_type)

Recalculate the margins around the media in the event of a page type change.

Parameters:

page_type (PdfPage) – the part of the page to display

resize()

Adjust the position and size of the media overlay.

is_shown()

Returns whether the media overlay is currently added to the overlays, or hidden.

Returns:

True iff the overlay is currently displayed.

Return type:

bool

is_playing()

Returns whether the media is currently playing (and not paused).

Returns:

True iff the media is playing.

Return type:

bool

do_stop()

Stops playing in the backend player.

show()

Bring the widget to the top of the overlays if necessary.

do_hide(*args)

Remove widget from overlays. Needs to be called via idle_add().

Returns:

True iff this function should be run again (idle_add() convention)

Return type:

bool

do_play()

Start playing the media file.

Should run on the main thread to ensure we avoid reentrency problems.

Returns:

True iff this function should be run again (idle_add() convention)

Return type:

bool

do_play_pause()

Toggle pause mode of the media.

Should run on the main thread to ensure we avoid reentrency problems.

Returns:

True iff this function should be run again (idle_add() convention)

Return type:

bool

do_set_time(t)

Set the player at time t.

Should run on the main thread to ensure we avoid vlc plugins’ reentrency problems.

Parameters:

t (float) – the timestamp, in s

Returns:

True iff this function should be run again (idle_add() convention)

Return type:

bool

pympress.media_overlays.gif – widget to play gif images as videos

class pympress.media_overlays.gif_backend.GifOverlay(*args, **kwargs)

Bases: VideoOverlay

A simple overlay mimicking the functionality of showing videos, but showing gifs instead.

anim = None

A PixbufAnimation containing all the frames and their timing for the displayed gif

anim_iter = None

A PixbufAnimationIter which will provide the timely access to the frames in anim

base_size = None

A tuple of (int, int) indicating the size of the bounding box of the gif

transform = None

The Matrix defining the zoom & shift to scale the gif

set_transform(*args)

Compute the transform to scale (not stretch nor crop) the gif.

draw(widget, ctx)

Simple resized drawing: get the pixbuf, set the transform, draw the image.

advance_gif()

Advance the gif, queue redrawing if the frame changed, and schedule the next frame.

do_set_time(t)

Set the player at time t.

Should run on the main thread to ensure we avoid reentrency problems.

Parameters:

t (int) – the timestamp, in ms

Returns:

True iff this function should be run again (idle_add() convention)

Return type:

bool

mute(*args)

is_playing()

Returns whether the media is currently playing (and not paused).

Returns:

True iff the media is playing.

Return type:

bool

do_stop()

Stops playing in the backend player.

do_play()

Start playing the media file.

Should run on the main thread to ensure we avoid reentrency problems.

Returns:

True iff this function should be run again (idle_add() convention)

Return type:

bool

do_play_pause()

Toggle pause mode of the media.

Should run on the main thread to ensure we avoid reentrency problems.

Returns:

True iff this function should be run again (idle_add() convention)

Return type:

bool

classmethod setup_backend()

Returns the name of this backend.

pympress.media_overlays.gst – widget to play videos using Gstreamer’s Gst

class pympress.media_overlays.gst_backend.GstOverlay(*args, **kwargs)

Bases: VideoOverlay

Simple Gstramer widget.

Wraps a simple gstreamer playbin.

update_freq = 200

int number of milliseconds between updates

playbin = None

A Playbin to be play videos

sink = None

A Sink to display video content

is_playing()

Returns whether the media is currently playing (and not paused).

Returns:

True iff the media is playing.

Return type:

bool

mute(value)

Mutes or unmutes the player.

Parameters:

value (bool) – True iff this player should be muted

on_state_changed(bus, msg)

Callback triggered by playbin state changes.

Parameters:

• bus (Bus) – the bus that we are connected to

• msg (Message) – the “state-changed” message

on_initial_play()

Set starting position, start scrollbar updates, unhide overlay.

do_update_duration(*args)

Transmit the change of file duration to the UI to adjust the scroll bar.

do_update_time()

Update the current position in the progress bar.

Returns:

True iff this function should be run again (timeout_add() convention)

Return type:

bool

do_play()

Start playing the media file.

Returns:

True iff this function should be run again (idle_add() convention)

Return type:

bool

do_play_pause()

Toggle pause mode of the media.

Should run on the main thread to ensure we avoid reentrency problems.

Returns:

True iff this function should be run again (idle_add() convention)

Return type:

bool

do_stop()

Stops playing in the backend player.

do_set_time(time)

Set the player at time time.

Should run on the main thread to ensure we avoid reentrency problems.

Parameters:

time (float) – the timestamp, in s

Returns:

True iff this function should be run again (idle_add() convention)

Return type:

bool

classmethod setup_backend(gst_opts=[])

Prepare/check the Gst backend.

Returns:

the version of Gst used by the backend

Return type:

str

pympress.media_overlays.vlc – widget to play videos using VLC

pympress.media_overlays.vlc_backend.get_window_handle(window)

Uses ctypes to call gdk_win32_window_get_handle which is not available in python gobject introspection porting.

Solution from http://stackoverflow.com/a/27236258/1387346

Parameters:

window (Window) – The window for which we want to get the handle

Returns:

The handle to the win32 window

class pympress.media_overlays.vlc_backend.VlcOverlay(*args, **kwargs)

Bases: VideoOverlay

Simple VLC widget.

Its player can be controlled through the ‘player’ attribute, which is a MediaPlayer instance.

handle_embed(mapped_widget)

Handler to embed the VLC player in the window, connected to the map signal.

is_playing()

Returns whether the media is currently playing (and not paused).

Returns:

True iff the media is playing.

Return type:

bool

handle_end()

End of the stream reached: restart if looping, otherwise hide overlay

Overridden because, to implement looping, vlc plugin needs to be told to start on stream end, not to seek

mute(value)

Mutes the player.

Parameters:

value (bool) – True iff this player should be muted

do_play()

Start playing the media file.

Should run on the main thread to ensure we avoid vlc plugins’ reentrency problems.

Returns:

True iff this function should be run again (idle_add() convention)

Return type:

bool

paint_backdrop(widget, context)

Draw behind/around the video, aka the black bars

Parameters:

• widget (Widget) – the widget to update

• context (Context) – the Cairo context (or None if called directly)

show()

Bring the widget to the top of the overlays if necessary − also force redraw of movie zone

do_play_pause()

Toggle pause mode of the media.

Should run on the main thread to ensure we avoid vlc plugins’ reentrency problems.

Returns:

True iff this function should be run again (idle_add() convention)

Return type:

bool

do_stop()

Stops playing in the backend player.

time_changed(event)

Handle time passing

Parameters:

event (Event) – The event that triggered the handler

do_set_time(time)

Set the player at time time.

Should run on the main thread to ensure we avoid vlc plugins’ reentrency problems.

Parameters:

time (float) – the timestamp, in s

Returns:

True iff this function should be run again (idle_add() convention)

Return type:

bool

classmethod setup_backend(vlc_opts=['--no-video-title-show'])

Prepare/check the VLC backend.

Parameters:

vlc_opts (list) – the arguments for starting vlc

Returns:

the version of VLC used by the backend

Return type:

str