Add the VSE addon Power Sequencer

1 files changed, 94 insertions, 0 deletions

diff --git a/power_sequencer/operators/preview_closest_cut.py b/power_sequencer/operators/preview_closest_cut.py
new file mode 100644
index 00000000..dccf69e3
--- /dev/null
+++ b/power_sequencer/operators/preview_closest_cut.py
@@ -0,0 +1,94 @@
+#
+# Copyright (C) 2016-2019 by Nathan Lovato, Daniel Oakey, Razvan Radulescu, and contributors
+#
+# This file is part of Power Sequencer.
+#
+# Power Sequencer is free software: you can redistribute it and/or modify it under the terms of the
+# GNU General Public License as published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# Power Sequencer is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with Power Sequencer. If
+# not, see <https://www.gnu.org/licenses/>.
+#
+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, 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