695 lines
23 KiB
C++
695 lines
23 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2019 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 <QDebug>
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#include <QToolTip>
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#include "common/clamp.h"
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#include "common/flipmodifiers.h"
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#include "common/qtversionabstraction.h"
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#include "common/range.h"
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#include "common/timecodefunctions.h"
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#include "config/config.h"
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#include "core.h"
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#include "node/block/gap/gap.h"
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#include "node/block/transition/transition.h"
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#include "widget/nodeview/nodeviewundo.h"
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TimelineWidget::PointerTool::PointerTool(TimelineWidget *parent) :
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Tool(parent),
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movement_allowed_(true),
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trimming_allowed_(true),
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track_movement_allowed_(true),
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rubberband_selecting_(false)
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{
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}
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void TimelineWidget::PointerTool::MousePress(TimelineViewMouseEvent *event)
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{
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// Main selection code
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TimelineViewBlockItem* item = GetItemAtScenePos(event->GetCoordinates());
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bool selectable_item = (item != nullptr
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&& item->flags() & QGraphicsItem::ItemIsSelectable
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&& !parent()->GetTrackFromReference(item->Track())->IsLocked());
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if (selectable_item) {
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// Cache the clip's type for use later
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drag_track_type_ = item->Track().type();
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}
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// If this item is already selected
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if (selectable_item
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&& item->isSelected()) {
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// If shift is held, deselect it
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if (event->GetModifiers() & Qt::ShiftModifier) {
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item->setSelected(false);
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// If not holding alt, deselect all links as well
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if (!(event->GetModifiers() & Qt::AltModifier)) {
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parent()->SetBlockLinksSelected(item->block(), false);
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}
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}
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// Otherwise do nothing
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return;
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}
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// If not holding shift, deselect all clips
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if (!(event->GetModifiers() & Qt::ShiftModifier)) {
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parent()->DeselectAll();
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}
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if (selectable_item) {
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// Select this item
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item->setSelected(true);
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// If not holding alt, select all links as well
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if (!(event->GetModifiers() & Qt::AltModifier)) {
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parent()->SetBlockLinksSelected(item->block(), true);
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}
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} else {
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// Start rubberband drag
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parent()->StartRubberBandSelect(!(event->GetModifiers() & Qt::AltModifier));
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rubberband_selecting_ = true;
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}
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}
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void TimelineWidget::PointerTool::MouseMove(TimelineViewMouseEvent *event)
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{
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if (rubberband_selecting_) {
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// Process rubberband select
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parent()->MoveRubberBandSelect(!(event->GetModifiers() & Qt::AltModifier));
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} else if (!dragging_) {
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// Now that the cursor has moved, we will assume the intention is to drag
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// If we haven't started dragging yet, we'll initiate a drag here
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InitiateDrag(event);
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// Set dragging to true here so no matter what, the drag isn't re-initiated until it's completed
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dragging_ = true;
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} else if (!parent()->ghost_items_.isEmpty()) {
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// We're already dragging AND we have ghosts to work with
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ProcessDrag(event->GetCoordinates());
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}
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}
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void TimelineWidget::PointerTool::MouseRelease(TimelineViewMouseEvent *event)
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{
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if (rubberband_selecting_) {
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parent()->EndRubberBandSelect(!(event->GetModifiers() & Qt::AltModifier));
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rubberband_selecting_ = false;
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return;
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}
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if (!parent()->ghost_items_.isEmpty()) {
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MouseReleaseInternal(event);
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}
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if (dragging_) {
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parent()->ClearGhosts();
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snap_points_.clear();
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}
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dragging_ = false;
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}
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void TimelineWidget::PointerTool::HoverMove(TimelineViewMouseEvent *event)
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{
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// No dragging, but we still want to process cursors
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TimelineViewBlockItem* block_at_cursor = GetItemAtScenePos(event->GetCoordinates());
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if (block_at_cursor) {
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switch (IsCursorInTrimHandle(block_at_cursor, event->GetSceneX())) {
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case Timeline::kTrimIn:
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parent()->setCursor(Qt::SizeHorCursor);
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break;
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case Timeline::kTrimOut:
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parent()->setCursor(Qt::SizeHorCursor);
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break;
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default:
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parent()->unsetCursor();
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}
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} else {
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parent()->unsetCursor();
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}
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}
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void TimelineWidget::PointerTool::SetMovementAllowed(bool allowed)
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{
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movement_allowed_ = allowed;
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}
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void TimelineWidget::PointerTool::SetTrackMovementAllowed(bool allowed)
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{
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track_movement_allowed_ = allowed;
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}
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void TimelineWidget::PointerTool::SetTrimmingAllowed(bool allowed)
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{
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trimming_allowed_ = allowed;
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}
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void TimelineWidget::PointerTool::MouseReleaseInternal(TimelineViewMouseEvent *event)
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{
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QUndoCommand* command = new QUndoCommand();
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QList<Block*> blocks_to_temp_remove;
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QList<TrackReference> tracks_affected;
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QList<TimelineViewGhostItem*> ignore_ghosts;
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bool duplicate_clips = (event->GetModifiers() & Qt::AltModifier);
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// Since all the ghosts will be leaving their old position in some way, we replace all of them with gaps here so the
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// entire timeline isn't disrupted in the process
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for (int i=0;i<parent()->ghost_items_.size();i++) {
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TimelineViewGhostItem* ghost = parent()->ghost_items_.at(i);
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// If the ghost has not been adjusted nothing needs to be done
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if (!ghost->HasBeenAdjusted()) {
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ignore_ghosts.append(ghost);
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continue;
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}
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Block* b = Node::ValueToPtr<Block>(ghost->data(TimelineViewGhostItem::kAttachedBlock));
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if (!duplicate_clips || ghost->mode() != Timeline::kMove || b->type() == Block::kTransition) {
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// If we're duplicating (user is holding ALT), no need to remove the original clip. However if the ghost was
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// trimmed, it can't be duplicated.
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blocks_to_temp_remove.append(b);
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}
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if (!tracks_affected.contains(ghost->Track())) {
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tracks_affected.append(ghost->Track());
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}
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if (!tracks_affected.contains(ghost->GetAdjustedTrack())) {
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tracks_affected.append(ghost->GetAdjustedTrack());
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}
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}
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// If there are any blocks to remove, remove them
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parent()->DeleteSelectedInternal(blocks_to_temp_remove, false, false, command);
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// Now we place the clips back in the timeline where the user moved them. It's legal for them to overwrite parts or
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// all of the gaps we inserted earlier
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for (int i=0;i<parent()->ghost_items_.size();i++) {
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TimelineViewGhostItem* ghost = parent()->ghost_items_.at(i);
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// If the ghost has not been adjusted nothing needs to be done
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if (ignore_ghosts.contains(ghost)) {
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continue;
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}
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const TrackReference& track_ref = ghost->GetAdjustedTrack();
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TrackOutput* track = parent()->GetTrackFromReference(track_ref);
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Block* b = Node::ValueToPtr<Block>(ghost->data(TimelineViewGhostItem::kAttachedBlock));
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// Normal blocks work in conjunction with the gap made above
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if (Timeline::IsATrimMode(ghost->mode())) {
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// If we were trimming, we'll need to change the length
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// If we were trimming the in point, we'll need to adjust the media in too
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if (ghost->mode() == Timeline::kTrimIn) {
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new BlockResizeWithMediaInCommand(b, ghost->AdjustedLength(), command);
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} else {
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new BlockResizeCommand(b, ghost->AdjustedLength(), command);
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}
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} else if (duplicate_clips && ghost->mode() == Timeline::kMove && b->type() != Block::kTransition) {
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// Duplicate rather than move
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Node* copy = b->copy();
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new NodeAddCommand(static_cast<NodeGraph*>(b->parent()),
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copy,
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command);
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new NodeCopyInputsCommand(b, copy, true, command);
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// Place the copy instead of the original block
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b = static_cast<Block*>(copy);
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} else if (b->type() == Block::kTransition) {
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// If the block is a dual transition and we're moving it, the mid point should be moved
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TransitionBlock* transition = static_cast<TransitionBlock*>(b);
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if (transition->connected_in_block() && transition->connected_out_block()) {
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new BlockSetMediaInCommand(transition,
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transition->media_in() + ghost->InAdjustment(),
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command);
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}
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}
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// Remove transitions that have been reduced to zero length
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if (b->type() == Block::kTransition) {
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new NodeRemoveCommand(static_cast<NodeGraph*>(b->parent()),
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{b},
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command);
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} else {
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new TrackPlaceBlockCommand(parent()->timeline_node_->track_list(track_ref.type()),
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track_ref.index(),
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b,
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ghost->GetAdjustedIn(),
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command);
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}
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}
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if (command->childCount() > 0) {
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foreach (const TrackReference& t, tracks_affected) {
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new TrackCleanGapsCommand(parent()->timeline_node_->track_list(t.type()),
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t.index(),
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command);
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}
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}
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Core::instance()->undo_stack()->pushIfHasChildren(command);
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}
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rational TimelineWidget::PointerTool::FrameValidateInternal(rational time_movement, const QVector<TimelineViewGhostItem *>& ghosts)
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{
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// Default behavior is to validate all movement and trimming
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time_movement = ValidateFrameMovement(time_movement, ghosts);
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time_movement = ValidateInTrimming(time_movement, ghosts, true);
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time_movement = ValidateOutTrimming(time_movement, ghosts, true);
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return time_movement;
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}
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void TimelineWidget::PointerTool::InitiateDrag(TimelineViewMouseEvent *mouse_pos)
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{
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// Record where the drag started in timeline coordinates
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drag_start_ = mouse_pos->GetCoordinates();
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// Get the item that was clicked
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TimelineViewBlockItem* clicked_item = GetItemAtScenePos(drag_start_);
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// We only initiate a pointer drag if the user actually dragged an item, otherwise if they dragged on empty space
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// QGraphicsView default behavior would initiate a rubberband drag
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if (clicked_item != nullptr) {
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// Clear snap points
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snap_points_.clear();
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// Record where the drag started in timeline coordinates
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track_start_ = mouse_pos->GetTrack();
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// Determine whether we're trimming or moving based on the position of the cursor
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Timeline::MovementMode trim_mode = IsCursorInTrimHandle(clicked_item, mouse_pos->GetSceneX());
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// Some derived classes don't allow movement
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if (trim_mode == Timeline::kNone && movement_allowed_) {
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trim_mode = Timeline::kMove;
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}
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// Gaps can't be moved, only trimmed
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if (clicked_item->block()->type() == Block::kGap && trim_mode == Timeline::kMove) {
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trim_mode = Timeline::kNone;
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}
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// Make sure we can actually perform an action here
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if (trim_mode != Timeline::kNone) {
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InitiateGhosts(clicked_item, trim_mode, false);
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}
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}
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}
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void TimelineWidget::PointerTool::ProcessDrag(const TimelineCoordinate &mouse_pos)
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{
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// Determine track movement
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const TrackReference& cursor_track = mouse_pos.GetTrack();
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int track_movement = 0;
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if (track_movement_allowed_) {
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track_movement = cursor_track.index() - track_start_.index();
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}
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// Determine frame movement
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rational time_movement = mouse_pos.GetFrame() - drag_start_.GetFrame();
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// Perform snapping if enabled (adjusts time_movement if it's close to any potential snap points)
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if (Core::instance()->snapping()) {
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SnapPoint(snap_points_, &time_movement);
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}
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// Validate movement (enforce all ghosts moving in legal ways)
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time_movement = FrameValidateInternal(time_movement, parent()->ghost_items_);
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track_movement = ValidateTrackMovement(track_movement, parent()->ghost_items_);
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// Perform movement
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foreach (TimelineViewGhostItem* ghost, parent()->ghost_items_) {
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switch (ghost->mode()) {
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case Timeline::kNone:
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break;
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case Timeline::kTrimIn:
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ghost->SetInAdjustment(time_movement);
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break;
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case Timeline::kTrimOut:
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ghost->SetOutAdjustment(time_movement);
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break;
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case Timeline::kMove:
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{
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ghost->SetInAdjustment(time_movement);
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ghost->SetOutAdjustment(time_movement);
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// Track movement is only legal for moving, not for trimming
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// Also, we only move the clips on the same track type that the drag started from
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if (ghost->Track().type() == drag_track_type_) {
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ghost->SetTrackAdjustment(track_movement);
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}
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const TrackReference& track = ghost->GetAdjustedTrack();
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ghost->SetYCoords(parent()->GetTrackY(track), parent()->GetTrackHeight(track));
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break;
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}
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}
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}
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// Show tooltip
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// Generate tooltip (showing earliest in point of imported clip)
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int64_t earliest_timestamp = Timecode::time_to_timestamp(time_movement, parent()->timebase());
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QString tooltip_text = Timecode::timestamp_to_timecode(earliest_timestamp,
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parent()->timebase(),
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Timecode::CurrentDisplay(),
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true);
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// Force tooltip to update (otherwise the tooltip won't move as written in the documentation, and could get in the way
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// of the cursor)
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QToolTip::hideText();
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QToolTip::showText(QCursor::pos(),
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tooltip_text,
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parent());
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}
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Timeline::MovementMode TimelineWidget::PointerTool::IsCursorInTrimHandle(TimelineViewBlockItem *block, qreal cursor_x)
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{
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double kTrimHandle = QFontMetricsWidth(parent()->fontMetrics(), "H");
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// Block is too narrow, no trimming allowed
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if (block->rect().width() <= kTrimHandle * 2) {
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return Timeline::kNone;
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}
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if (trimming_allowed_ && cursor_x <= block->x() + kTrimHandle) {
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return Timeline::kTrimIn;
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} else if (trimming_allowed_ && cursor_x >= block->x() + block->rect().right() - kTrimHandle) {
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return Timeline::kTrimOut;
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} else {
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return Timeline::kNone;
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}
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}
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void TimelineWidget::PointerTool::InitiateGhosts(TimelineViewBlockItem* clicked_item,
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Timeline::MovementMode trim_mode,
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bool allow_gap_trimming)
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{
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// Convert selected items list to clips list
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QList<TimelineViewBlockItem*> clips = parent()->GetSelectedBlocks();
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// If trimming multiple clips, we only trim the earliest in each track (trimming in) or the latest in each track
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// (trimming out). If the current clip is NOT one of these, we only trim it.
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bool multitrim_enabled = true;
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// Determine if the clicked item is the earliest/latest in the track for in/out trimming respectively
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if (Timeline::IsATrimMode(trim_mode)) {
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multitrim_enabled = IsClipTrimmable(clicked_item, clips, trim_mode);
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}
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// For each selected item, create a "ghost", a visual representation of the action before it gets performed
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foreach (TimelineViewBlockItem* clip_item, clips) {
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// Determine correct mode for ghost
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//
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// Movement is indiscriminate, all the ghosts can be set to do this, however trimming is limited to one block
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// PER TRACK
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bool include_this_clip = true;
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if (clip_item->block()->type() == Block::kGap
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&& !Timeline::IsATrimMode(trim_mode)) {
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continue;
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}
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if (clip_item != clicked_item
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&& (Timeline::IsATrimMode(trim_mode))) {
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include_this_clip = multitrim_enabled ? IsClipTrimmable(clip_item, clips, trim_mode) : false;
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}
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if (include_this_clip) {
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Block* block = clip_item->block();
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Timeline::MovementMode block_mode = trim_mode;
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// If we don't allow gap trimming, we automatically switch to the next/previous block to trim
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if (block->type() == Block::kGap && !allow_gap_trimming) {
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if (trim_mode == Timeline::kTrimIn) {
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// Trim the previous clip's out point instead
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block = block->previous();
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} else {
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// Assume kTrimOut
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block = block->next();
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}
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block_mode = FlipTrimMode(trim_mode);
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}
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if (block) {
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AddGhostFromBlock(block, clip_item->Track(), block_mode);
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if (block->type() == Block::kTransition) {
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TransitionBlock* transition = static_cast<TransitionBlock*>(block);
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// Create a rolling effect with the attached block
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if (transition->connected_in_block() && (block_mode == Timeline::kTrimOut || block_mode == Timeline::kMove)) {
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AddGhostFromBlock(transition->connected_in_block(), clip_item->Track(), Timeline::kTrimIn);
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}
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if (transition->connected_out_block() && (block_mode == Timeline::kTrimIn || block_mode == Timeline::kMove)) {
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AddGhostFromBlock(transition->connected_out_block(), clip_item->Track(), Timeline::kTrimOut);
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}
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}
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}
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}
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}
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}
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TimelineViewGhostItem* TimelineWidget::PointerTool::AddGhostFromBlock(Block* block, const TrackReference& track, Timeline::MovementMode mode)
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{
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TimelineViewGhostItem* ghost = TimelineViewGhostItem::FromBlock(block,
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track,
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parent()->GetTrackY(track),
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parent()->GetTrackHeight(track));
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AddGhostInternal(ghost, mode);
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return ghost;
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}
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TimelineViewGhostItem* TimelineWidget::PointerTool::AddGhostFromNull(const rational &in, const rational &out, const TrackReference& track, Timeline::MovementMode mode)
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{
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TimelineViewGhostItem* ghost = new TimelineViewGhostItem();
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ghost->SetIn(in);
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|
ghost->SetOut(out);
|
|
ghost->SetTrack(track);
|
|
ghost->SetYCoords(parent()->GetTrackY(track), parent()->GetTrackHeight(track));
|
|
|
|
AddGhostInternal(ghost, mode);
|
|
|
|
return ghost;
|
|
}
|
|
|
|
void TimelineWidget::PointerTool::AddGhostInternal(TimelineViewGhostItem* ghost, Timeline::MovementMode mode)
|
|
{
|
|
ghost->SetMode(mode);
|
|
|
|
// Prepare snap points (optimizes snapping for later)
|
|
switch (mode) {
|
|
case Timeline::kMove:
|
|
snap_points_.append(ghost->In());
|
|
snap_points_.append(ghost->Out());
|
|
break;
|
|
case Timeline::kTrimIn:
|
|
snap_points_.append(ghost->In());
|
|
break;
|
|
case Timeline::kTrimOut:
|
|
snap_points_.append(ghost->Out());
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
parent()->AddGhost(ghost);
|
|
}
|
|
|
|
bool TimelineWidget::PointerTool::IsClipTrimmable(TimelineViewBlockItem* clip,
|
|
const QList<TimelineViewBlockItem*>& items,
|
|
const Timeline::MovementMode& mode)
|
|
{
|
|
foreach (TimelineViewBlockItem* compare, items) {
|
|
if (clip->Track() == compare->Track()
|
|
&& clip != compare
|
|
&& ((compare->block()->in() < clip->block()->in() && mode == Timeline::kTrimIn)
|
|
|| (compare->block()->out() > clip->block()->out() && mode == Timeline::kTrimOut))) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
rational GetEarliestPointForClip(Block* block)
|
|
{
|
|
return qMax(rational(0), block->in() - block->media_in());
|
|
}
|
|
|
|
rational TimelineWidget::PointerTool::ValidateInTrimming(rational movement,
|
|
const QVector<TimelineViewGhostItem *> ghosts,
|
|
bool prevent_overwriting)
|
|
{
|
|
foreach (TimelineViewGhostItem* ghost, ghosts) {
|
|
if (ghost->mode() != Timeline::kTrimIn) {
|
|
continue;
|
|
}
|
|
|
|
Block* block = Node::ValueToPtr<Block>(ghost->data(TimelineViewGhostItem::kAttachedBlock));
|
|
|
|
rational earliest_in = RATIONAL_MIN;
|
|
rational latest_in = ghost->Out();
|
|
|
|
if (block->type() == Block::kTransition) {
|
|
// For transitions, validate with the attached block
|
|
TransitionBlock* transition = static_cast<TransitionBlock*>(block);
|
|
|
|
if (transition->connected_in_block() && transition->connected_out_block()) {
|
|
// Here, we try to get the latest earliest point for both the in and out blocks, we do in here and out will
|
|
// be calculated later
|
|
earliest_in = GetEarliestPointForClip(transition->connected_in_block());
|
|
|
|
// We set the block to the out block since that will be before the in block and will be the one we use to
|
|
// prevent overwriting since we're trimming the in side of this transition
|
|
block = transition->connected_out_block();
|
|
|
|
latest_in = transition->in() + transition->out_offset();
|
|
} else {
|
|
// Use whatever block is attached
|
|
block = transition->connected_in_block() ? transition->connected_in_block() : transition->connected_out_block();
|
|
}
|
|
}
|
|
|
|
earliest_in = qMax(earliest_in, GetEarliestPointForClip(block));
|
|
|
|
if (!ghost->CanHaveZeroLength()) {
|
|
latest_in -= parent()->timebase();
|
|
}
|
|
|
|
if (prevent_overwriting) {
|
|
// Look for a Block in the way
|
|
Block* prev = block->previous();
|
|
while (prev != nullptr) {
|
|
if (prev->type() == Block::kClip) {
|
|
earliest_in = qMax(earliest_in, prev->out());
|
|
break;
|
|
}
|
|
prev = prev->previous();
|
|
}
|
|
}
|
|
|
|
// Clamp adjusted value between the earliest and latest values
|
|
rational adjusted = ghost->In() + movement;
|
|
rational clamped = clamp(adjusted, earliest_in, latest_in);
|
|
|
|
if (clamped != adjusted) {
|
|
movement = clamped - ghost->In();
|
|
}
|
|
}
|
|
|
|
return movement;
|
|
}
|
|
|
|
rational TimelineWidget::PointerTool::ValidateOutTrimming(rational movement,
|
|
const QVector<TimelineViewGhostItem *> ghosts,
|
|
bool prevent_overwriting)
|
|
{
|
|
foreach (TimelineViewGhostItem* ghost, ghosts) {
|
|
if (ghost->mode() != Timeline::kTrimOut) {
|
|
continue;
|
|
}
|
|
|
|
Block* block = Node::ValueToPtr<Block>(ghost->data(TimelineViewGhostItem::kAttachedBlock));
|
|
|
|
// Determine earliest and latest out points
|
|
rational earliest_out = ghost->In();
|
|
|
|
if (!ghost->CanHaveZeroLength()) {
|
|
earliest_out += parent()->timebase();
|
|
}
|
|
|
|
rational latest_out = RATIONAL_MAX;
|
|
|
|
if (block->type() == Block::kTransition) {
|
|
// For transitions, validate with the attached block
|
|
TransitionBlock* transition = static_cast<TransitionBlock*>(block);
|
|
|
|
if (transition->connected_in_block() && transition->connected_out_block()) {
|
|
// We set the block to the out block since that will be before the in block and will be the one we use to
|
|
// prevent overwriting since we're trimming the in side of this transition
|
|
|
|
// FIXME: At some point we may add some better logic to `latest_out` akin to the logic in ValidateInTrimming
|
|
// which is why this hasn't yet been collapsed into the ternary below.
|
|
block = transition->connected_in_block();
|
|
|
|
earliest_out = transition->out() - transition->in_offset();
|
|
} else {
|
|
block = transition->connected_in_block() ? transition->connected_in_block() : transition->connected_out_block();
|
|
}
|
|
}
|
|
|
|
if (prevent_overwriting) {
|
|
// Determine if there's a block in the way
|
|
Block* next = block->next();
|
|
while (next != nullptr) {
|
|
if (next->type() == Block::kClip) {
|
|
latest_out = qMin(latest_out, next->in());
|
|
break;
|
|
}
|
|
next = next->next();
|
|
}
|
|
}
|
|
|
|
// Clamp adjusted value between the earliest and latest values
|
|
rational adjusted = ghost->Out() + movement;
|
|
rational clamped = clamp(adjusted, earliest_out, latest_out);
|
|
|
|
if (clamped != adjusted) {
|
|
movement = clamped - ghost->Out();
|
|
}
|
|
}
|
|
|
|
return movement;
|
|
}
|