git.sesse.net Git - nageru/blob - nageru/peak_display.h

   1 #ifndef PEAK_DISPLAY_H
   2 #define PEAK_DISPLAY_H
   3
   4 #include <QWidget>
   5 #include <chrono>
   6 #include <mutex>
   7
   8 class AudioClip;
   9
  10 class PeakDisplay : public QWidget
  11 {
  12         Q_OBJECT
  13
  14 public:
  15         PeakDisplay(QWidget *parent);
  16
  17         // Does not take ownership.
  18         void set_audio_clip(AudioClip *audio_clip) {
  19                 this->audio_clip = audio_clip;
  20         }
  21         void audio_clip_updated();
  22
  23         void set_base(std::chrono::steady_clock::time_point base)
  24         {
  25                 this->base = base;
  26                 audio_clip_updated();
  27         }
  28
  29         void reset_base()
  30         {
  31                 base = std::chrono::steady_clock::time_point();
  32                 audio_clip_updated();
  33         }
  34
  35 private:
  36         void paintEvent(QPaintEvent *event) override;
  37
  38         AudioClip *audio_clip;
  39         std::chrono::steady_clock::time_point base;  // Epoch if not set.
  40 };
  41
  42 #endif