slip tool implemented

2019-09-23 23:50:03 +10:00
parent 372fc25667
commit 85c9687f91
10 changed files with 135 additions and 18 deletions
@@ -0,0 +1,83 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 Olive Team
+
+  This program 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.
+
+  This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#include "widget/timelineview/timelineview.h"
+
+#include <QToolTip>
+
+#include "common/timecodefunctions.h"
+#include "config/config.h"
+
+TimelineView::SlipTool::SlipTool(TimelineView *parent) :
+  PointerTool(parent)
+{
+  SetTrimmingAllowed(false);
+  SetTrackMovementAllowed(false);
+}
+
+void TimelineView::SlipTool::ProcessDrag(const QPoint &mouse_pos)
+{
+  // Retrieve cursor position difference
+  QPointF scene_pos = GetScenePos(mouse_pos);
+  QPointF movement = scene_pos - drag_start_;
+
+  // Determine frame movement
+  rational time_movement = -parent()->SceneToTime(movement.x());
+
+  // Validate slip (enforce all ghosts moving in legal ways)
+  foreach (TimelineViewGhostItem* ghost, parent()->ghost_items_) {
+    if (ghost->MediaIn() + time_movement < 0) {
+      time_movement = -ghost->MediaIn();
+    }
+  }
+
+  // Perform slip
+  foreach (TimelineViewGhostItem* ghost, parent()->ghost_items_) {
+    ghost->SetMediaInAdjustment(time_movement);
+  }
+
+  // Show tooltip
+  // Generate tooltip (showing earliest in point of imported clip)
+  int64_t earliest_timestamp = olive::time_to_timestamp(time_movement, parent()->timebase_);
+  QString tooltip_text = olive::timestamp_to_timecode(earliest_timestamp,
+                                                      parent()->timebase_,
+                                                      kTimecodeDisplay,
+                                                      true);
+  QToolTip::showText(QCursor::pos(),
+                     tooltip_text,
+                     parent());
+}
+
+void TimelineView::SlipTool::MouseReleaseInternal(QMouseEvent *event)
+{
+  Q_UNUSED(event)
+
+  QUndoCommand* command = new QUndoCommand();
+
+  // Find earliest point to ripple around
+  foreach (TimelineViewGhostItem* ghost, parent()->ghost_items_) {
+    Block* b = Node::ValueToPtr<Block>(ghost->data(TimelineViewGhostItem::kAttachedBlock));
+
+    new BlockSetMediaInCommand(b, ghost->GetAdjustedMediaIn(), command);
+  }
+
+  olive::undo_stack.pushIfHasChildren(command);
+}
+