reimplemented pointer default functionality

2019-10-12 06:37:53 +11:00
parent 937acd4c8c
commit 6f4e5a04e4
36 changed files with 146 additions and 63 deletions
@@ -0,0 +1,184 @@
+/***
+
+  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/timelinewidget/timelinewidget.h"
+
+#include <float.h>
+
+#include "common/range.h"
+
+TimelineWidget::Tool::Tool(TimelineWidget *parent) :
+  dragging_(false),
+  parent_(parent),
+  drag_mode_(QGraphicsView::NoDrag)
+{
+}
+
+TimelineWidget::Tool::~Tool()
+{
+}
+
+TimelineWidget *TimelineWidget::Tool::parent()
+{
+  return parent_;
+}
+
+olive::timeline::MovementMode TimelineWidget::Tool::FlipTrimMode(const olive::timeline::MovementMode &trim_mode)
+{
+  if (trim_mode == olive::timeline::kTrimIn) {
+    return olive::timeline::kTrimOut;
+  }
+
+  if (trim_mode == olive::timeline::kTrimOut) {
+    return olive::timeline::kTrimIn;
+  }
+
+  return trim_mode;
+}
+
+const QGraphicsView::DragMode &TimelineWidget::Tool::drag_mode()
+{
+  return drag_mode_;
+}
+
+void TimelineWidget::Tool::set_drag_mode(const QGraphicsView::DragMode &mode)
+{
+  drag_mode_ = mode;
+}
+
+TimelineViewBlockItem *TimelineWidget::Tool::GetItemAtScenePos(const TimelineCoordinate& coord)
+{
+  QMapIterator<Block*, TimelineViewBlockItem*> iterator(parent()->block_items_);
+
+  while (iterator.hasNext()) {
+    iterator.next();
+
+    Block* b = iterator.key();
+    TimelineViewBlockItem* item = iterator.value();
+
+    if (b->in() <= coord.GetFrame()
+        && b->out() > coord.GetFrame()
+        && item->Track() == coord.GetTrack()) {
+      return item;
+    }
+  }
+
+  return nullptr;
+}
+
+void AttemptSnap(const QList<double>& proposed_pts,
+                 double compare_point,
+                 const QList<rational>& start_times,
+                 rational compare_time,
+                 rational* movement,
+                 double* diff) {
+  const qreal kSnapRange = 10; // FIXME: Hardcoded number
+
+  for (int i=0;i<proposed_pts.size();i++) {
+    // Attempt snapping to clip out point
+    if (InRange(proposed_pts.at(i), compare_point, kSnapRange)) {
+      double this_diff = qAbs(compare_point - proposed_pts.at(i));
+
+      if (this_diff < *diff
+          && start_times.at(i) + *movement >= 0) {
+        *movement = compare_time - start_times.at(i);
+        *diff = this_diff;
+      }
+    }
+  }
+}
+
+rational TimelineWidget::Tool::ValidateFrameMovement(rational movement, const QVector<TimelineViewGhostItem *> ghosts)
+{
+  foreach (TimelineViewGhostItem* ghost, ghosts) {
+    if (ghost->mode() != olive::timeline::kMove) {
+      continue;
+    }
+
+    // Prevents any ghosts from going below 0:00:00 time
+    if (ghost->In() + movement < 0) {
+      movement = -ghost->In();
+    }
+  }
+
+  return movement;
+}
+
+int TimelineWidget::Tool::ValidateTrackMovement(int movement, const QVector<TimelineViewGhostItem *> ghosts)
+{
+  foreach (TimelineViewGhostItem* ghost, ghosts) {
+    // Prevents any ghosts from going to a non-existent negative track
+    if (ghost->Track().index() + movement < 0) {
+      if (ghost->mode() != olive::timeline::kMove) {
+        continue;
+      }
+
+      movement = -ghost->Track().index();
+    }
+  }
+
+  return movement;
+}
+
+bool TimelineWidget::Tool::SnapPoint(QList<rational> start_times, rational* movement, int snap_points)
+{
+  double diff = DBL_MAX;
+
+  QList<double> proposed_pts;
+
+  foreach (rational s, start_times) {
+    proposed_pts.append((s + *movement).toDouble() * parent()->scale_);
+  }
+
+  if (snap_points & kSnapToPlayhead) {
+
+
+    rational playhead_abs_time = rational(parent()->playhead_ * parent()->timebase().numerator(),
+                                          parent()->timebase().denominator());
+
+    qreal playhead_pos = playhead_abs_time.toDouble() * parent()->scale_;
+
+    AttemptSnap(proposed_pts, playhead_pos, start_times, playhead_abs_time, movement, &diff);
+  }
+
+  if (snap_points & kSnapToClips) {
+    QMapIterator<Block*, TimelineViewBlockItem*> iterator(parent()->block_items_);
+
+    while (iterator.hasNext()) {
+      iterator.next();
+
+      TimelineViewBlockItem* item = iterator.value();
+
+      if (item != nullptr) {
+        qreal rect_left = item->x();
+        qreal rect_right = rect_left + item->rect().width();
+
+        // Attempt snapping to clip in point
+        AttemptSnap(proposed_pts, rect_left, start_times, item->block()->in(), movement, &diff);
+
+        // Attempt snapping to clip out point
+        AttemptSnap(proposed_pts, rect_right, start_times, item->block()->out(), movement, &diff);
+      }
+    }
+  }
+
+
+  return (diff < DBL_MAX);
+}