139 lines
3.5 KiB
C++
139 lines
3.5 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2022 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 "trackview.h"
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#include <QDebug>
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#include <QResizeEvent>
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#include <QScrollBar>
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#include <QSplitter>
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#include <QVBoxLayout>
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#include "trackviewitem.h"
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namespace olive {
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TrackView::TrackView(Qt::Alignment vertical_alignment, QWidget *parent) :
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QScrollArea(parent),
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list_(nullptr),
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alignment_(vertical_alignment)
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{
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setAlignment(Qt::AlignLeft | alignment_);
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QWidget* central = new QWidget();
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setWidget(central);
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setWidgetResizable(true);
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QVBoxLayout* layout = new QVBoxLayout(central);
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layout->setMargin(0);
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layout->setSpacing(0);
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if (alignment_ == Qt::AlignBottom) {
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layout->addStretch();
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connect(verticalScrollBar(), &QScrollBar::rangeChanged, this, &TrackView::ScrollbarRangeChanged);
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last_scrollbar_max_ = verticalScrollBar()->maximum();
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}
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splitter_ = new TrackViewSplitter(alignment_);
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splitter_->setChildrenCollapsible(false);
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layout->addWidget(splitter_);
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if (alignment_ == Qt::AlignTop) {
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layout->addStretch();
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}
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connect(splitter_, &TrackViewSplitter::TrackHeightChanged, this, &TrackView::TrackHeightChanged);
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setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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}
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void TrackView::ConnectTrackList(TrackList *list)
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{
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if (list_ != nullptr) {
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// Remove tracks
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for (int i=0; i<list_->GetTrackCount(); i++) {
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splitter_->Remove(0);
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}
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disconnect(list_, &TrackList::TrackAdded, this, &TrackView::InsertTrack);
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disconnect(list_, &TrackList::TrackRemoved, this, &TrackView::RemoveTrack);
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}
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list_ = list;
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if (list_ != nullptr) {
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foreach (Track* track, list_->GetTracks()) {
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InsertTrack(track);
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}
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connect(list_, &TrackList::TrackAdded, this, &TrackView::InsertTrack);
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connect(list_, &TrackList::TrackRemoved, this, &TrackView::RemoveTrack);
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}
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}
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void TrackView::DisconnectTrackList()
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{
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ConnectTrackList(nullptr);
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}
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void TrackView::resizeEvent(QResizeEvent *e)
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{
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QScrollArea::resizeEvent(e);
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splitter_->SetSpacerHeight(height()/2);
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}
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void TrackView::ScrollbarRangeChanged(int, int max)
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{
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if (max != last_scrollbar_max_) {
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int ba_val = last_scrollbar_max_ - verticalScrollBar()->value();
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int new_val = max - ba_val;
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verticalScrollBar()->setValue(new_val);
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emit verticalScrollBar()->valueChanged(new_val);
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last_scrollbar_max_ = max;
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}
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}
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void TrackView::TrackHeightChanged(int index, int height)
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{
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list_->GetTrackAt(index)->SetTrackHeightInPixels(height);
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}
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void TrackView::InsertTrack(Track *track)
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{
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TrackViewItem *tvi = new TrackViewItem(track);
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connect(tvi, &TrackViewItem::AboutToDeleteTrack, this, &TrackView::AboutToDeleteTrack);
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splitter_->Insert(track->Index(),
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track->GetTrackHeightInPixels(),
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tvi);
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}
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void TrackView::RemoveTrack(Track *track)
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{
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splitter_->Remove(track->Index());
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}
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}
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