From d4bef6a215080e99119089148c0368e60c43f436 Mon Sep 17 00:00:00 2001
From: Alessio Monti di Sopra <a.monti>
Date: Sat, 2 Nov 2019 22:53:39 -0700
Subject: VSE: add a Set frame range to Strips operator

Add operator that sets the frame range, with an option to choose the regular or the preview one, around the selected strips.

Reviewed By: ISS

Differential Revision: https://developer.blender.org/D6078
---
 .../editors/space_sequencer/sequencer_edit.c       | 64 ++++++++++++++++++++++
 .../editors/space_sequencer/sequencer_intern.h     |  2 +
 .../editors/space_sequencer/sequencer_ops.c        |  2 +
 3 files changed, 68 insertions(+)

(limited to 'source/blender/editors/space_sequencer')

diff --git a/source/blender/editors/space_sequencer/sequencer_edit.c b/source/blender/editors/space_sequencer/sequencer_edit.c
index ca1c55b80eb..dc4299b637b 100644
--- a/source/blender/editors/space_sequencer/sequencer_edit.c
+++ b/source/blender/editors/space_sequencer/sequencer_edit.c
@@ -4185,3 +4185,67 @@ void SEQUENCER_OT_export_subtitles(struct wmOperatorType *ot)
                                  FILE_DEFAULTDISPLAY,
                                  FILE_SORT_ALPHA);
 }
+
+static int sequencer_set_range_to_strips_exec(bContext *C, wmOperator *op)
+{
+  Scene *scene = CTX_data_scene(C);
+  Editing *ed = BKE_sequencer_editing_get(scene, false);
+  Sequence *seq;
+
+  int sfra = MAXFRAME;
+  int efra = -MAXFRAME;
+  bool selected = false;
+  const bool preview = RNA_boolean_get(op->ptr, "preview");
+
+  for (seq = ed->seqbasep->first; seq; seq = seq->next) {
+    if (seq->flag & SELECT) {
+      selected = true;
+      sfra = min_ii(sfra, seq->startdisp);
+      efra = max_ii(efra, seq->enddisp - 1);
+    }
+  }
+
+  if (!selected) {
+    BKE_report(op->reports, RPT_WARNING, "Select one or more strips");
+    return OPERATOR_CANCELLED;
+  }
+  else if (efra < 0) {
+    BKE_report(op->reports, RPT_ERROR, "Can't set a negative range");
+    return OPERATOR_CANCELLED;
+  }
+
+  if (preview) {
+    scene->r.flag |= SCER_PRV_RANGE;
+    scene->r.psfra = max_ii(0, sfra);
+    scene->r.pefra = efra;
+  }
+  else {
+    scene->r.flag &= ~SCER_PRV_RANGE;
+    scene->r.sfra = max_ii(0, sfra);
+    scene->r.efra = efra;
+  }
+
+  WM_event_add_notifier(C, NC_SCENE | ND_FRAME, scene);
+
+  return OPERATOR_FINISHED;
+}
+
+void SEQUENCER_OT_set_range_to_strips(struct wmOperatorType *ot)
+{
+  PropertyRNA *prop;
+
+  /* identifiers */
+  ot->name = "Set Range to Strips";
+  ot->idname = "SEQUENCER_OT_set_range_to_strips";
+  ot->description = "Set the frame range to the selected strips start and end";
+
+  /* api callbacks */
+  ot->exec = sequencer_set_range_to_strips_exec;
+  ot->poll = sequencer_edit_poll;
+
+  /* flags */
+  ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
+
+  prop = RNA_def_boolean(ot->srna, "preview", false, "Preview", "Set the preview range instead");
+  RNA_def_property_flag(prop, PROP_SKIP_SAVE);
+}
diff --git a/source/blender/editors/space_sequencer/sequencer_intern.h b/source/blender/editors/space_sequencer/sequencer_intern.h
index 093d333c007..0a51578da3b 100644
--- a/source/blender/editors/space_sequencer/sequencer_intern.h
+++ b/source/blender/editors/space_sequencer/sequencer_intern.h
@@ -149,6 +149,8 @@ void SEQUENCER_OT_enable_proxies(struct wmOperatorType *ot);
 
 void SEQUENCER_OT_export_subtitles(struct wmOperatorType *ot);
 
+void SEQUENCER_OT_set_range_to_strips(struct wmOperatorType *ot);
+
 /* preview specific operators */
 void SEQUENCER_OT_view_all_preview(struct wmOperatorType *ot);
 
diff --git a/source/blender/editors/space_sequencer/sequencer_ops.c b/source/blender/editors/space_sequencer/sequencer_ops.c
index e91d6cfa3e6..af03035d10f 100644
--- a/source/blender/editors/space_sequencer/sequencer_ops.c
+++ b/source/blender/editors/space_sequencer/sequencer_ops.c
@@ -88,6 +88,8 @@ void sequencer_operatortypes(void)
   WM_operatortype_append(SEQUENCER_OT_change_effect_type);
   WM_operatortype_append(SEQUENCER_OT_change_path);
 
+  WM_operatortype_append(SEQUENCER_OT_set_range_to_strips);
+
   /* sequencer_select.c */
   WM_operatortype_append(SEQUENCER_OT_select_all);
   WM_operatortype_append(SEQUENCER_OT_select);
-- 
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