Audio plugin host https://kx.studio/carla
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  1. /*
  2. * DISTRHO Plugin Toolkit (DPT)
  3. * Copyright (C) 2012-2013 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 DISTRHO_UI_HPP_INCLUDED
  17. #define DISTRHO_UI_HPP_INCLUDED
  18. #include "DistrhoUtils.hpp"
  19. #include "dgl/Widget.hpp"
  20. START_NAMESPACE_DISTRHO
  21. // -----------------------------------------------------------------------
  22. // UI
  23. class UI : public DGL::Widget
  24. {
  25. public:
  26. UI();
  27. virtual ~UI();
  28. // -------------------------------------------------------------------
  29. // Host DSP State
  30. double d_getSampleRate() const noexcept;
  31. void d_editParameter(uint32_t index, bool started);
  32. void d_setParameterValue(uint32_t index, float value);
  33. #if DISTRHO_PLUGIN_WANT_STATE
  34. void d_setState(const char* key, const char* value);
  35. #endif
  36. #if DISTRHO_PLUGIN_IS_SYNTH
  37. void d_sendNote(uint8_t channel, uint8_t note, uint8_t velocity);
  38. #endif
  39. // -------------------------------------------------------------------
  40. // Host UI State
  41. void d_uiResize(unsigned int width, unsigned int height);
  42. protected:
  43. // -------------------------------------------------------------------
  44. // Basic Information
  45. virtual const char* d_getName() const noexcept { return DISTRHO_PLUGIN_NAME; }
  46. virtual unsigned int d_getWidth() const noexcept = 0;
  47. virtual unsigned int d_getHeight() const noexcept = 0;
  48. // -------------------------------------------------------------------
  49. // DSP Callbacks
  50. virtual void d_parameterChanged(uint32_t index, float value) = 0;
  51. #if DISTRHO_PLUGIN_WANT_PROGRAMS
  52. virtual void d_programChanged(uint32_t index) = 0;
  53. #endif
  54. #if DISTRHO_PLUGIN_WANT_STATE
  55. virtual void d_stateChanged(const char* key, const char* value) = 0;
  56. #endif
  57. // -------------------------------------------------------------------
  58. // UI Callbacks (optional)
  59. virtual void d_uiIdle() {}
  60. // -------------------------------------------------------------------
  61. private:
  62. struct PrivateData;
  63. PrivateData* const pData;
  64. friend class UIExporter;
  65. };
  66. // -----------------------------------------------------------------------
  67. // Create UI, entry point
  68. extern UI* createUI();
  69. // -----------------------------------------------------------------------
  70. END_NAMESPACE_DISTRHO
  71. #endif // DISTRHO_UI_HPP_INCLUDED