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67 lines
1.8 KiB
C++
67 lines
1.8 KiB
C++
#pragma once
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#include "Music.h"
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#include <LibGUI/GWidget.h>
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class GPainter;
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class PianoWidget final : public GWidget {
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public:
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PianoWidget();
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virtual ~PianoWidget() override;
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void fill_audio_buffer(uint8_t* stream, int len);
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private:
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virtual void paint_event(GPaintEvent&) override;
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virtual void keydown_event(GKeyEvent&) override;
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virtual void keyup_event(GKeyEvent&) override;
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virtual void custom_event(CCustomEvent&) override;
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virtual void mousedown_event(GMouseEvent&) override;
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virtual void mouseup_event(GMouseEvent&) override;
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virtual void mousemove_event(GMouseEvent&) override;
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double w_sine(size_t);
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double w_saw(size_t);
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double w_square(size_t);
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Rect define_piano_key_rect(int index, PianoKey) const;
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PianoKey find_key_for_relative_position(int x, int y) const;
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void render_piano_key(GPainter&, int index, PianoKey, const StringView&);
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void render_piano(GPainter&);
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void render_knobs(GPainter&);
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void render_knob(GPainter&, const Rect&, bool state, const StringView&);
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void note(Music::PianoKey offset_n, KeyCode key_code);
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void update_keys();
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int octave_base() const;
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int m_sample_count { 0 };
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Sample* m_front_buffer { nullptr };
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Sample* m_back_buffer { nullptr };
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#define note_count sizeof(note_frequency) / sizeof(double)
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bool m_note_on[note_count];
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double m_power[note_count];
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double m_sin_pos[note_count];
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double m_square_pos[note_count];
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double m_saw_pos[note_count];
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int m_octave_min { 1 };
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int m_octave_max { 6 };
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int m_octave { 4 };
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int m_width { 512 };
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int m_height { 512 };
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int m_wave_type { 0 };
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bool m_delay_enabled { false };
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bool m_release_enabled { false };
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bool keys[256];
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PianoKey m_piano_key_under_mouse { K_None };
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bool m_mouse_pressed { false };
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};
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