1 files changed, 119 insertions, 0 deletions
diff --git a/power_sequencer/operators/jump_to_cut.py b/power_sequencer/operators/jump_to_cut.py
new file mode 100644
index 00000000..8de9224a
--- /dev/null
+++ b/power_sequencer/operators/jump_to_cut.py
@@ -0,0 +1,119 @@
+#
+# 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 operator import attrgetter
+
+from .utils.doc import doc_name, doc_idname, doc_brief, doc_description
+
+
+class POWER_SEQUENCER_OT_jump_to_cut(bpy.types.Operator):
+    """
+    *brief* Jump to next/previous cut
+
+
+    Jump to the next or the previous cut in the edit.  Unlike Blender's default tool, also
+    works during playback.
+    """
+
+    doc = {
+        "name": doc_name(__qualname__),
+        "demo": "",
+        "description": doc_description(__doc__),
+        "shortcuts": [
+            (
+                {"type": "UP_ARROW", "value": "PRESS"},
+                {"direction": "RIGHT"},
+                "Jump to next cut or keyframe",
+            ),
+            (
+                {"type": "DOWN_ARROW", "value": "PRESS"},
+                {"direction": "LEFT"},
+                "Jump to previous cut or keyframe",
+            ),
+        ],
+        "keymap": "Frames",
+    }
+    bl_idname = doc_idname(__qualname__)
+    bl_label = doc["name"]
+    bl_description = doc_brief(doc["description"])
+    bl_options = {"REGISTER", "UNDO"}
+
+    direction: bpy.props.EnumProperty(
+        name="Direction",
+        description="Jump direction, either forward or backward",
+        items=[
+            ("RIGHT", "Forward", "Jump forward in time"),
+            ("LEFT", "Backward", "Jump backward in time"),
+        ],
+    )
+
+    @classmethod
+    def poll(cls, context):
+        return context.sequences
+
+    def execute(self, context):
+        frame_current = context.scene.frame_current
+        sorted_sequences = sorted(
+            context.sequences, key=attrgetter("frame_final_start", "frame_final_end")
+        )
+
+        fcurves = []
+        animation_data = context.scene.animation_data
+        if animation_data and animation_data.action:
+            fcurves = animation_data.action.fcurves
+
+        frame_target = -1
+        if self.direction == "RIGHT":
+            sequences = [s for s in sorted_sequences if s.frame_final_end > frame_current]
+            for s in sequences:
+
+                frame_target = (
+                    s.frame_final_end
+                    if s.frame_final_start <= frame_current
+                    else s.frame_final_start
+                )
+
+                for f in fcurves:
+                    for k in f.keyframe_points:
+                        frame = k.co[0]
+                        if frame <= context.scene.frame_current:
+                            continue
+                        frame_target = min(frame_target, frame)
+                break
+
+        elif self.direction == "LEFT":
+            sequences = [
+                s for s in reversed(sorted_sequences) if s.frame_final_start < frame_current
+            ]
+            for s in sequences:
+
+                frame_target = (
+                    s.frame_final_start if s.frame_final_end >= frame_current else s.frame_final_end
+                )
+
+                for f in fcurves:
+                    for k in f.keyframe_points:
+                        frame = k.co[0]
+                        if frame >= context.scene.frame_current:
+                            continue
+                        frame_target = max(frame_target, frame)
+                break
+
+        if frame_target != -1:
+            context.scene.frame_current = max(1, frame_target)
+
+        return {"FINISHED"}