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# SPDX-License-Identifier: GPL-3.0-or-later
# Copyright 2016-2020 by Nathan Lovato, Daniel Oakey, Razvan Radulescu, and contributors
# This file is part of Power Sequencer.
import bpy
from .utils.functions import get_frame_range
from .utils.functions import set_preview_range
from .utils.functions import convert_duration_to_frames
from .utils.doc import doc_name, doc_idname, doc_brief, doc_description
class POWER_SEQUENCER_OT_preview_closest_cut(bpy.types.Operator):
"""
*brief* Toggle preview around the closest cut, based on time cursor
Finds the closest cut to the time cursor and sets the preview to a small range around that
frame. If the preview matches the range, resets to the full timeline
"""
doc = {
"name": doc_name(__qualname__),
"demo": "",
"description": doc_description(__doc__),
"shortcuts": [({"type": "P", "value": "PRESS", "shift": True}, {}, "Preview Last Cut")],
"keymap": "Sequencer",
}
bl_idname = doc_idname(__qualname__)
bl_label = doc["name"]
bl_description = doc_brief(doc["description"])
bl_options = {"REGISTER", "UNDO"}
duration: bpy.props.FloatProperty(
name="Preview duration",
description="Total duration of the preview, in seconds",
default=1.0,
min=0.1,
)
cut_frame_override: bpy.props.IntProperty(
name="Cut Frame Override",
description="Force to preview around this frame",
default=0,
min=0,
options={"HIDDEN"},
)
@classmethod
def poll(cls, context):
return context.sequences
def execute(self, context):
scene = context.scene
preview_center = (
self.find_closest_cut_frame(context)
if not self.cut_frame_override
else self.cut_frame_override
)
duration_frame = convert_duration_to_frames(context, self.duration)
start = preview_center - duration_frame / 2
end = preview_center + duration_frame / 2
if not (preview_center > 1 and start > 1):
return {"CANCELLED"}
if scene.frame_preview_start == start and scene.frame_preview_end == end:
start, end = get_frame_range(context.sequences)
set_preview_range(context, start, end)
return {"FINISHED"}
def find_closest_cut_frame(self, context):
last_distance = 100000
closest_cut_frame = 0
for s in context.sequences:
cuts = [s.frame_final_start, s.frame_final_end]
for cut_frame in cuts:
distance_to_cut = abs(cut_frame - context.scene.frame_current)
if distance_to_cut < last_distance:
last_distance = distance_to_cut
closest_cut_frame = cut_frame
return closest_cut_frame
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