124 lines
3.0 KiB
C++
124 lines
3.0 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 "timelineview.h"
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#include <QMouseEvent>
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#include <QtMath>
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TimelineView::TimelineView(QWidget *parent) :
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QGraphicsView(parent)
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{
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setScene(&scene_);
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setAlignment(Qt::AlignLeft | Qt::AlignVCenter);
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setDragMode(RubberBandDrag);
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// Set default scale
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SetScale(1.0);
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}
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void TimelineView::AddClip(ClipBlock *clip)
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{
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TimelineViewClipItem* clip_item = new TimelineViewClipItem();
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// Set up clip with view parameters (clip item will automatically size its rect accordingly)
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clip_item->SetClip(clip);
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clip_item->SetTimebase(timebase_);
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clip_item->SetScale(scale_);
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// Add to list of clip items that can be iterated through
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clip_items_.append(clip_item);
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// Add item to graphics scene
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scene_.addItem(clip_item);
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}
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void TimelineView::SetScale(const double &scale)
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{
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scale_ = scale;
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foreach (TimelineViewClipItem* item, clip_items_) {
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item->SetScale(scale_);
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}
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}
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void TimelineView::SetTimebase(const rational &timebase)
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{
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timebase_ = timebase;
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foreach (TimelineViewClipItem* item, clip_items_) {
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item->SetTimebase(timebase_);
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}
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}
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void TimelineView::Clear()
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{
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scene_.clear();
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clip_items_.clear();
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// FIXME: Does QGraphicsScene take ownership of these items or do I have to delete them manually after the scene
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// clear?
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}
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void TimelineView::mousePressEvent(QMouseEvent *event)
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{
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QGraphicsView::mousePressEvent(event);
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if (itemAt(event->pos()) != nullptr) {
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QList<QGraphicsItem*> selected_items = scene_.selectedItems();
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foreach (QGraphicsItem* item, selected_items) {
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TimelineViewGhostItem* ghost = new TimelineViewGhostItem();
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TimelineViewClipItem* clip_item = static_cast<TimelineViewClipItem*>(item);
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ghost->setRect(clip_item->rect());
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ghost_items_.append(ghost);
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scene_.addItem(ghost);
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}
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}
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}
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void TimelineView::mouseMoveEvent(QMouseEvent *event)
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{
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QGraphicsView::mouseMoveEvent(event);
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if (!ghost_items_.isEmpty()) {
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foreach (TimelineViewGhostItem* ghost, ghost_items_) {
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QPointF scene_pos = mapToScene(event->pos());
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ghost->setX(qMax(0.0, scene_pos.x()));
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}
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}
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}
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void TimelineView::mouseReleaseEvent(QMouseEvent *event)
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{
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QGraphicsView::mouseReleaseEvent(event);
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if (!ghost_items_.isEmpty()) {
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foreach (TimelineViewGhostItem* ghost, ghost_items_) {
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delete ghost;
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}
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ghost_items_.clear();
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}
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}
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