reimplemented "add" tool

Tool for adding empty/non-media clips in the timeline. Also basis of the transition tool.
2019-12-11 19:54:53 +11:00
parent 7ae37511a2
commit 7b92b21df2
5 changed files with 137 additions and 5 deletions
@@ -0,0 +1,78 @@
+#include "widget/timelinewidget/timelinewidget.h"
+
+#include "core.h"
+
+TimelineWidget::AddTool::AddTool(TimelineWidget *parent) :
+  Tool(parent),
+  ghost_(nullptr)
+{
+}
+
+void TimelineWidget::AddTool::MousePress(TimelineViewMouseEvent *event)
+{
+  const TrackReference& track = event->GetCoordinates().GetTrack();
+  TrackOutput* t = parent()->GetTrackFromReference(track);
+
+  if (t && t->IsLocked()) {
+    return;
+  }
+
+  ghost_ = new TimelineViewGhostItem();
+  ghost_->SetIn(event->GetCoordinates().GetFrame());
+  ghost_->SetOut(event->GetCoordinates().GetFrame());
+  ghost_->SetTrack(track);
+  ghost_->SetYCoords(parent()->GetTrackY(track), parent()->GetTrackHeight(track));
+  parent()->AddGhost(ghost_);
+
+  snap_points_.append(event->GetCoordinates().GetFrame());
+}
+
+void TimelineWidget::AddTool::MouseMove(TimelineViewMouseEvent *event)
+{
+  const rational& cursor_frame = event->GetCoordinates().GetFrame();
+
+  // Calculate movement
+  rational movement = cursor_frame - ghost_->Out();
+
+  // Snap movement
+  SnapPoint(snap_points_, &movement);
+
+  // Validation: Ensure in point never goes below 0
+  if (movement < -ghost_->In()) {
+    movement = -ghost_->In();
+  }
+
+  // Make adjustment
+  if (!movement) {
+    ghost_->SetInAdjustment(0);
+    ghost_->SetOutAdjustment(0);
+  } else if (movement > 0) {
+    ghost_->SetInAdjustment(0);
+    ghost_->SetOutAdjustment(movement);
+  } else if (movement < 0) {
+    ghost_->SetInAdjustment(movement);
+    ghost_->SetOutAdjustment(0);
+  }
+}
+
+void TimelineWidget::AddTool::MouseRelease(TimelineViewMouseEvent *event)
+{
+  MouseMove(event);
+
+  const TrackReference& track = ghost_->Track();
+
+  if (ghost_) {
+    if (!ghost_->AdjustedLength().isNull()) {
+      ClipBlock* clip = new ClipBlock();
+      clip->set_length(ghost_->AdjustedLength());
+      olive::undo_stack.push(new TrackPlaceBlockCommand(parent()->timeline_node_->track_list(track.type()),
+                                                        track.index(),
+                                                        clip,
+                                                        ghost_->GetAdjustedIn()));
+    }
+
+    parent()->ClearGhosts();
+    snap_points_.clear();
+    ghost_ = nullptr;
+  }
+}