113 lines
2.9 KiB
C++
113 lines
2.9 KiB
C++
#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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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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foreach (TrackViewItem* item, items_) {
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delete item;
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}
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items_.clear();
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disconnect(list_, &TrackList::TrackHeightChanged, splitter_, &TrackViewSplitter::SetTrackHeight);
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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 (TrackOutput* track, list_->Tracks()) {
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TrackViewItem* item = new TrackViewItem(track);
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items_.append(item);
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splitter_->Insert(track->Index(), track->GetTrackHeight(), item);
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}
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connect(list_, &TrackList::TrackHeightChanged, splitter_, &TrackViewSplitter::SetTrackHeight);
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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_->TrackAt(index)->SetTrackHeight(height);
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}
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void TrackView::InsertTrack(TrackOutput *track)
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{
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splitter_->Insert(track->Index(), track->GetTrackHeight(), new TrackViewItem(track));
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}
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void TrackView::RemoveTrack(TrackOutput *track)
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{
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splitter_->Remove(track->Index());
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}
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