GSlider.h 1.8 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465
  1. #pragma once
  2. #include <LibGUI/GWidget.h>
  3. class GSlider : public GWidget {
  4. public:
  5. enum class KnobSizeMode {
  6. Fixed,
  7. Proportional,
  8. };
  9. GSlider(Orientation, GWidget*);
  10. virtual ~GSlider() override;
  11. Orientation orientation() const { return m_orientation; }
  12. int value() const { return m_value; }
  13. int min() const { return m_min; }
  14. int max() const { return m_max; }
  15. void set_range(int min, int max);
  16. void set_value(int);
  17. void set_min(int min) { set_range(min, max()); }
  18. void set_max(int max) { set_range(min(), max); }
  19. void set_knob_size_mode(KnobSizeMode mode) { m_knob_size_mode = mode; }
  20. KnobSizeMode knob_size_mode() const { return m_knob_size_mode; }
  21. int track_size() const { return 2; }
  22. int knob_fixed_primary_size() const { return 8; }
  23. int knob_secondary_size() const { return 20; }
  24. Rect knob_rect() const;
  25. Rect inner_rect() const
  26. {
  27. if (orientation() == Orientation::Horizontal)
  28. return rect().shrunken(20, 0);
  29. return rect().shrunken(0, 20);
  30. }
  31. Function<void(int)> on_value_changed;
  32. protected:
  33. virtual void paint_event(GPaintEvent&) override;
  34. virtual void mousedown_event(GMouseEvent&) override;
  35. virtual void mousemove_event(GMouseEvent&) override;
  36. virtual void mouseup_event(GMouseEvent&) override;
  37. virtual void leave_event(CEvent&) override;
  38. virtual void change_event(GEvent&) override;
  39. private:
  40. void set_knob_hovered(bool);
  41. int m_value { 0 };
  42. int m_min { 0 };
  43. int m_max { 100 };
  44. bool m_knob_hovered { false };
  45. bool m_dragging { false };
  46. int m_drag_origin_value { 0 };
  47. Point m_drag_origin;
  48. KnobSizeMode m_knob_size_mode { KnobSizeMode::Fixed };
  49. Orientation m_orientation { Orientation::Horizontal };
  50. };