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# SPDX-License-Identifier: GPL-3.0-or-later
# Copyright (C) 2016-2020 by Nathan Lovato, Daniel Oakey, Razvan Radulescu, and contributors
import bpy
from operator import attrgetter
from .utils.global_settings import SequenceTypes
from .utils.functions import (
find_sequences_after,
get_mouse_frame_and_channel,
ripple_move,
)
from .utils.doc import doc_name, doc_idname, doc_brief, doc_description
def find_sequences_before(context, strip):
"""
Returns a list of sequences that are before the strip in the current context
"""
return [s for s in context.sequences if s.frame_final_end <= strip.frame_final_start]
class POWER_SEQUENCER_OT_concatenate_strips(bpy.types.Operator):
"""
*brief* Remove space between strips
Concatenates selected strips in a channel, i.e. removes the gap between them. If a single
strip is selected, either the next strip in the channel will be concatenated, or all
strips in the channel will be concatenated depending on which shortcut is used.
"""
doc = {
"name": doc_name(__qualname__),
"demo": "https://i.imgur.com/YyEL8YP.gif",
"description": doc_description(__doc__),
"shortcuts": [
(
{"type": "C", "value": "PRESS"},
{"concatenate_all": False, "is_towards_left": True},
("Concatenate and select the next strip in the channel"),
),
(
{"type": "C", "value": "PRESS", "shift": True},
{"concatenate_all": True, "is_towards_left": True},
"Concatenate all strips in selected channels",
),
(
{"type": "C", "value": "PRESS", "alt": True},
{"concatenate_all": False, "is_towards_left": False},
("Concatenate and select the previous strip in the channel towards the right"),
),
(
{"type": "C", "value": "PRESS", "shift": True, "alt": True},
{"concatenate_all": True, "is_towards_left": False},
"Shift Alt C; Concatenate all strips in channel towards the right",
),
],
"keymap": "Sequencer",
}
bl_idname = doc_idname(__qualname__)
bl_label = doc["name"]
bl_description = doc_brief(doc["description"])
bl_options = {"REGISTER", "UNDO"}
concatenate_all: bpy.props.BoolProperty(
name="Concatenate all strips in channel",
description=("If only one strip selected, concatenate" " the entire channel"),
default=False,
)
is_towards_left: bpy.props.BoolProperty(
name="To Left",
description="Concatenate strips moving them back in time (default) or forward in time",
default=True,
)
do_ripple: bpy.props.BoolProperty(
name="Ripple Edit",
description="Ripple the time offset to strips after the concatenated one",
default=False,
)
@classmethod
def poll(cls, context):
return context.sequences
def invoke(self, context, event):
if not context.selected_sequences:
frame, channel = get_mouse_frame_and_channel(context, event)
bpy.ops.power_sequencer.select_closest_to_mouse(frame=frame, channel=channel)
return self.execute(context)
def execute(self, context):
selection = context.selected_sequences
channels = {s.channel for s in selection}
is_one_strip_per_channel = len(selection) == len(channels)
if is_one_strip_per_channel:
for s in selection:
candidates = (
find_sequences_before(context, s)
if not self.is_towards_left
else find_sequences_after(context, s)
)
to_concatenate = [
strip
for strip in candidates
if strip.channel == s.channel
and not strip.lock
and strip.type in SequenceTypes.CUTABLE
]
if not to_concatenate:
continue
self.concatenate(context, s, to_concatenate)
else:
for channel in channels:
to_concatenate = [s for s in selection if s.channel == channel]
strip_target = (
min(to_concatenate, key=lambda s: s.frame_final_start)
if self.is_towards_left
else max(to_concatenate, key=lambda s: s.frame_final_start)
)
to_concatenate.remove(strip_target)
self.concatenate(context, strip_target, to_concatenate, force_all=True)
return {"FINISHED"}
def concatenate(self, context, strip_target, sequences, force_all=False):
to_concatenate = sorted(sequences, key=attrgetter("frame_final_start"))
to_concatenate = (
list(reversed(to_concatenate)) if not self.is_towards_left else to_concatenate
)
to_concatenate = (
[to_concatenate[0]] if not (self.concatenate_all or force_all) else to_concatenate
)
attribute_target = "frame_final_end" if self.is_towards_left else "frame_final_start"
attribute_concat = "frame_final_start" if self.is_towards_left else "frame_final_end"
concatenate_start = getattr(strip_target, attribute_target)
last_gap = 0
for s in to_concatenate:
if isinstance(s, bpy.types.EffectSequence):
concatenate_start = (
s.frame_final_end - last_gap
if self.is_towards_left
else s.frame_final_start - last_gap
)
continue
concat_strip_frame = getattr(s, attribute_concat)
gap = concat_strip_frame - concatenate_start
if self.do_ripple and self.is_towards_left:
ripple_move(context, [s], -gap)
else:
s.frame_start -= gap
concatenate_start = s.frame_final_end if self.is_towards_left else s.frame_final_start
last_gap = gap
if not (self.concatenate_all or force_all):
strip_target.select = False
to_concatenate[0].select = True
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