itsmattkc
fed17e35fa
Draws to a pixmap only when the waveform changes so it doesn't have to be regenerated on every draw. Also renames WaveformView to AudioWaveformView
40 lines
900 B
C++
40 lines
900 B
C++
#ifndef WAVEFORMVIEW_H
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#define WAVEFORMVIEW_H
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#include <QWidget>
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#include "audio/sumsamples.h"
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#include "render/audioparams.h"
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#include "render/backend/audiorenderbackend.h"
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#include "widget/timeruler/seekablewidget.h"
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class AudioWaveformView : public SeekableWidget
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{
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Q_OBJECT
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public:
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AudioWaveformView(QWidget* parent = nullptr);
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//void SetData(const QString& file, const AudioRenderingParams& params);
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void SetBackend(AudioRenderBackend* backend);
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static void DrawWaveform(QPainter* painter, const QRect &rect, const double &scale, const SampleSummer::Sum *samples, int nb_samples, int channels);
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protected:
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virtual void paintEvent(QPaintEvent* event) override;
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private:
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AudioRenderBackend* backend_;
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QPixmap cached_waveform_;
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QSize cached_size_;
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double cached_scale_;
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int cached_scroll_;
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private slots:
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void BackendParamsChanged();
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};
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#endif // WAVEFORMVIEW_H
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