itsmattkc
b5cc13c10e
If frame rates are mixed, ensures that video doesn't end up falling or ending on half frames which potentially make the entire sequence awkward
142 lines
3.4 KiB
C++
142 lines
3.4 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2020 Olive Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "widget/timelinewidget/timelinewidget.h"
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#include "node/block/transition/transition.h"
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#include "widget/nodeview/nodeviewundo.h"
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namespace olive {
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TimelineTool::TimelineTool(TimelineWidget *parent) :
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dragging_(false),
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parent_(parent)
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{
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}
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TimelineTool::~TimelineTool()
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{
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}
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TimelineWidget *TimelineTool::parent()
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{
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return parent_;
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}
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Timeline::MovementMode TimelineTool::FlipTrimMode(const Timeline::MovementMode &trim_mode)
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{
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if (trim_mode == Timeline::kTrimIn) {
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return Timeline::kTrimOut;
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}
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if (trim_mode == Timeline::kTrimOut) {
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return Timeline::kTrimIn;
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}
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return trim_mode;
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}
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rational TimelineTool::SnapMovementToTimebase(const rational &start, rational movement, const rational &timebase)
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{
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rational proposed_position = start + movement;
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rational snapped = Timecode::snap_time_to_timebase(proposed_position, timebase);
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if (proposed_position != snapped) {
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movement += snapped - proposed_position;
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}
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return movement;
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}
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rational TimelineTool::ValidateTimeMovement(rational movement)
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{
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bool first_ghost = true;
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foreach (TimelineViewGhostItem* ghost, parent()->GetGhostItems()) {
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if (ghost->GetMode() != Timeline::kMove) {
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continue;
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}
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// Prevents any ghosts from going below 0:00:00 time
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if (ghost->GetIn() + movement < 0) {
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movement = -ghost->GetIn();
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} else if (first_ghost) {
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// Ensure ghost is snapped to a grid
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movement = SnapMovementToTimebase(ghost->GetIn(), movement, parent()->GetTimebaseForTrackType(ghost->GetTrack().type()));
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first_ghost = false;
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}
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}
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return movement;
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}
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int TimelineTool::ValidateTrackMovement(int movement, const QVector<TimelineViewGhostItem*>& ghosts)
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{
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foreach (TimelineViewGhostItem* ghost, ghosts) {
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if (ghost->GetMode() != Timeline::kMove) {
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continue;
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}
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if (!ghost->GetCanMoveTracks()) {
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return 0;
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} else if (ghost->GetTrack().index() + movement < 0) {
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// Prevents any ghosts from going to a non-existent negative track
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movement = -ghost->GetTrack().index();
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}
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}
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return movement;
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}
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void TimelineTool::GetGhostData(rational *earliest_point, rational *latest_point)
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{
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rational ep = RATIONAL_MAX;
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rational lp = RATIONAL_MIN;
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foreach (TimelineViewGhostItem* ghost, parent()->GetGhostItems()) {
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ep = qMin(ep, ghost->GetAdjustedIn());
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lp = qMax(lp, ghost->GetAdjustedOut());
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}
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if (earliest_point) {
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*earliest_point = ep;
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}
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if (latest_point) {
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*latest_point = lp;
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}
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}
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void TimelineTool::InsertGapsAtGhostDestination(QUndoCommand *command)
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{
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rational earliest_point, latest_point;
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GetGhostData(&earliest_point, &latest_point);
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parent()->InsertGapsAt(earliest_point, latest_point - earliest_point, command);
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}
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}
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