1 /* 2 * Copyright 2006-2010 Stephan Aßmus <superstippi@gmx.de> 3 * All rights reserved. Distributed under the terms of the MIT License. 4 */ 5 #ifndef TRANSPORT_CONTROL_GROUP_H 6 #define TRANSPORT_CONTROL_GROUP_H 7 8 9 // NOTE: Based on my code in the BeOS interface for the VLC media player 10 // that I did during the VLC 0.4.3 - 0.4.6 times. Code not written by me 11 // removed. -Stephan Aßmus 12 13 14 #include <GroupView.h> 15 16 17 class BShape; 18 class DurationView; 19 class PeakView; 20 class PlayPauseButton; 21 class PositionToolTip; 22 class SeekSlider; 23 class SymbolButton; 24 class VolumeSlider; 25 26 enum { 27 SKIP_BACK_ENABLED = 1 << 0, 28 SEEK_BACK_ENABLED = 1 << 1, 29 PLAYBACK_ENABLED = 1 << 2, 30 SEEK_FORWARD_ENABLED = 1 << 3, 31 SKIP_FORWARD_ENABLED = 1 << 4, 32 VOLUME_ENABLED = 1 << 5, 33 SEEK_ENABLED = 1 << 6, 34 }; 35 36 37 class TransportControlGroup : public BGroupView { 38 public: 39 TransportControlGroup(BRect frame, 40 bool useSkipButtons, bool usePeakView, 41 bool useWindButtons); 42 virtual ~TransportControlGroup(); 43 44 // BView interface 45 virtual void AttachedToWindow(); 46 virtual void GetPreferredSize(float* width, float* height); 47 virtual void MessageReceived(BMessage* message); 48 49 // TransportControlGroup 50 virtual uint32 EnabledButtons(); 51 virtual void TogglePlaying(); 52 virtual void Stop(); 53 virtual void Rewind(); 54 virtual void Forward(); 55 virtual void SkipBackward(); 56 virtual void SkipForward(); 57 virtual void VolumeChanged(float value); 58 virtual void ToggleMute(); 59 virtual void PositionChanged(float value); 60 61 void SetEnabled(uint32 whichButtons); 62 63 void SetPlaybackState(uint32 state); 64 void SetSkippable(bool backward, bool forward); 65 66 void SetAudioEnabled(bool enable); 67 void SetMuted(bool mute); 68 69 void SetVolume(float value); 70 void SetAudioChannelCount(int32 count); 71 void SetPosition(float value, bigtime_t position, 72 bigtime_t duration); 73 float Position() const; 74 75 PeakView* GetPeakView() const 76 { return fPeakView; } 77 78 void SetDisabledString(const char* string); 79 void SetSymbolScale(float scale); 80 81 private: 82 void _TogglePlaying(); 83 void _Stop(); 84 void _Rewind(); 85 void _Forward(); 86 void _SkipBackward(); 87 void _SkipForward(); 88 void _UpdateVolume(); 89 void _ToggleMute(); 90 void _UpdatePosition(); 91 92 float _LinearToExponential(float db); 93 float _ExponentialToLinear(float db); 94 float _DbToGain(float db); 95 float _GainToDb(float gain); 96 97 BShape* _CreateSkipBackwardsShape(float height) const; 98 BShape* _CreateSkipForwardShape(float height) const; 99 BShape* _CreateRewindShape(float height) const; 100 BShape* _CreateForwardShape(float height) const; 101 BShape* _CreatePlayShape(float height) const; 102 BShape* _CreatePauseShape(float height) const; 103 BShape* _CreateStopShape(float height) const; 104 BShape* _CreateSpeakerShape(float height) const; 105 106 private: 107 SeekSlider* fSeekSlider; 108 DurationView* fDurationView; 109 PositionToolTip* fPositionToolTip; 110 PeakView* fPeakView; 111 VolumeSlider* fVolumeSlider; 112 113 SymbolButton* fSkipBack; 114 SymbolButton* fSkipForward; 115 SymbolButton* fRewind; 116 SymbolButton* fForward; 117 PlayPauseButton* fPlayPause; 118 SymbolButton* fStop; 119 SymbolButton* fMute; 120 121 BGroupLayout* fSeekLayout; 122 BGroupLayout* fControlLayout; 123 124 float fSymbolScale; 125 uint32 fLastEnabledButtons; 126 }; 127 128 #endif // TRANSPORT_CONTROL_GROUP_H 129