DISTRHO Plugin Framework
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ImageSlider.hpp 3.2KB

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  1. /*
  2. * DISTRHO Plugin Framework (DPF)
  3. * Copyright (C) 2012-2014 Filipe Coelho <falktx@falktx.com>
  4. *
  5. * Permission to use, copy, modify, and/or distribute this software for any purpose with
  6. * or without fee is hereby granted, provided that the above copyright notice and this
  7. * permission notice appear in all copies.
  8. *
  9. * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
  10. * TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN
  11. * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
  12. * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
  13. * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  14. * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15. */
  16. #ifndef DGL_IMAGE_SLIDER_HPP_INCLUDED
  17. #define DGL_IMAGE_SLIDER_HPP_INCLUDED
  18. #include "Image.hpp"
  19. #include "Widget.hpp"
  20. START_NAMESPACE_DGL
  21. // -----------------------------------------------------------------------
  22. class ImageSlider : public Widget
  23. {
  24. public:
  25. class Callback
  26. {
  27. public:
  28. virtual ~Callback() {}
  29. virtual void imageSliderDragStarted(ImageSlider* imageSlider) = 0;
  30. virtual void imageSliderDragFinished(ImageSlider* imageSlider) = 0;
  31. virtual void imageSliderValueChanged(ImageSlider* imageSlider, float value) = 0;
  32. };
  33. explicit ImageSlider(Window& parent, const Image& image, int id = 0) noexcept;
  34. explicit ImageSlider(Widget* widget, const Image& image, int id = 0) noexcept;
  35. explicit ImageSlider(const ImageSlider& imageSlider) noexcept;
  36. ImageSlider& operator=(const ImageSlider& imageSlider) noexcept;
  37. int getId() const noexcept;
  38. void setId(int id) noexcept;
  39. float getValue() const noexcept;
  40. void setStartPos(const Point<int>& startPos) noexcept;
  41. void setStartPos(int x, int y) noexcept;
  42. void setEndPos(const Point<int>& endPos) noexcept;
  43. void setEndPos(int x, int y) noexcept;
  44. void setInverted(bool inverted) noexcept;
  45. void setRange(float min, float max) noexcept;
  46. void setStep(float step) noexcept;
  47. void setValue(float value, bool sendCallback = false) noexcept;
  48. void setCallback(Callback* callback) noexcept;
  49. protected:
  50. void onDisplay() override;
  51. bool onMouse(const MouseEvent&) override;
  52. bool onMotion(const MotionEvent&) override;
  53. private:
  54. Image fImage;
  55. int fId;
  56. float fMinimum;
  57. float fMaximum;
  58. float fStep;
  59. float fValue;
  60. float fValueTmp;
  61. bool fDragging;
  62. bool fInverted;
  63. int fStartedX;
  64. int fStartedY;
  65. Callback* fCallback;
  66. Point<int> fStartPos;
  67. Point<int> fEndPos;
  68. Rectangle<int> fSliderArea;
  69. void _recheckArea() noexcept;
  70. // these should not be used
  71. void setAbsoluteX(int) const noexcept {}
  72. void setAbsoluteY(int) const noexcept {}
  73. void setAbsolutePos(int, int) const noexcept {}
  74. void setAbsolutePos(const Point<int>&) const noexcept {}
  75. void setNeedsFullViewport(bool) const noexcept {}
  76. DISTRHO_LEAK_DETECTOR(ImageSlider)
  77. };
  78. // -----------------------------------------------------------------------
  79. END_NAMESPACE_DGL
  80. #endif // DGL_IMAGE_SLIDER_HPP_INCLUDED