104 lines
2.7 KiB
C++
104 lines
2.7 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 "audiowaveformview.h"
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#include <QFile>
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#include <QPainter>
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#include <QtMath>
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#include "common/clamp.h"
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#include "config/config.h"
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#include "timeline/timelinecommon.h"
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namespace olive {
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#define super SeekableWidget
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AudioWaveformView::AudioWaveformView(QWidget *parent) :
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super(parent),
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playback_(nullptr)
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{
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setAutoFillBackground(true);
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setBackgroundRole(QPalette::Base);
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setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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// NOTE: At some point it might make sense for this to be AlignCenter since the waveform
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// originates from the center. But we're leaving it top/left for now since it was just
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// ported from a QWidget's paintEvent.
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setAlignment(Qt::AlignLeft | Qt::AlignTop);
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}
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void AudioWaveformView::SetViewer(ViewerOutput *playback)
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{
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if (playback_) {
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pool_.clear();
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pool_.waitForDone();
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disconnect(playback_, &ViewerOutput::ConnectedWaveformChanged, viewport(), static_cast<void(QWidget::*)()>(&QWidget::update));
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SetTimebase(0);
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}
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playback_ = playback;
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if (playback_) {
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connect(playback_, &ViewerOutput::ConnectedWaveformChanged, viewport(), static_cast<void(QWidget::*)()>(&QWidget::update));
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SetTimebase(playback_->GetAudioParams().sample_rate_as_time_base());
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}
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}
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void AudioWaveformView::drawForeground(QPainter *p, const QRectF &rect)
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{
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super::drawForeground(p, rect);
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if (!playback_) {
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return;
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}
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const AudioWaveformCache *wave = playback_->GetConnectedWaveform();
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if (!wave) {
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return;
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}
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const AudioParams& params = wave->GetParameters();
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if (!params.is_valid()) {
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return;
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}
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// Draw in/out points
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DrawWorkArea(p);
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DrawMarkers(p);
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// Draw waveform
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p->setPen(QColor(64, 255, 160)); // FIXME: Hardcoded color
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wave->Draw(p, rect.toRect(), GetScale(), SceneToTime(GetScroll()));
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// Draw playhead
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p->setPen(PLAYHEAD_COLOR);
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int playhead_x = TimeToScene(GetViewerNode()->GetPlayhead());
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p->drawLine(playhead_x, 0, playhead_x, height());
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}
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}
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