Rendering.h

/*
 *  Copyright (C) 2005-2018 Team Kodi
 *  This file is part of Kodi - https://kodi.tv
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 *  See LICENSES/README.md for more information.
 */
 
#pragma once
 
#include "../../c-api/gui/controls/rendering.h"
#include "../Window.h"
#include "../renderHelper.h"
 
#ifdef __cplusplus
 
namespace kodi
{
namespace gui
{
namespace controls
{
 
//============================================================================
class ATTRIBUTE_HIDDEN CRendering : public CAddonGUIControlBase
{
public:
  //==========================================================================
  CRendering(CWindow* window, int controlId) : CAddonGUIControlBase(window)
  {
    m_controlHandle = m_interface->kodi_gui->window->get_control_render_addon(
        m_interface->kodiBase, m_Window->GetControlHandle(), controlId);
    if (m_controlHandle)
      m_interface->kodi_gui->control_rendering->set_callbacks(m_interface->kodiBase,
                                                              m_controlHandle, this, OnCreateCB,
                                                              OnRenderCB, OnStopCB, OnDirtyCB);
    else
      kodi::Log(ADDON_LOG_FATAL, "kodi::gui::controls::%s can't create control class from Kodi !!!",
                __FUNCTION__);
  }
  //--------------------------------------------------------------------------
 
  //==========================================================================
  ~CRendering() override
  {
    m_interface->kodi_gui->control_rendering->destroy(m_interface->kodiBase, m_controlHandle);
  }
  //--------------------------------------------------------------------------
 
  //==========================================================================
  virtual bool Create(int x, int y, int w, int h, kodi::HardwareContext device) { return false; }
  //--------------------------------------------------------------------------
 
  //==========================================================================
  virtual void Render() {}
  //--------------------------------------------------------------------------
 
  //==========================================================================
  virtual void Stop() {}
  //--------------------------------------------------------------------------
 
  //==========================================================================
  virtual bool Dirty() { return false; }
  //--------------------------------------------------------------------------
 
  //==========================================================================
  void SetIndependentCallbacks(kodi::gui::ClientHandle cbhdl,
                               bool (*CBCreate)(kodi::gui::ClientHandle cbhdl,
                                                int x,
                                                int y,
                                                int w,
                                                int h,
                                                kodi::HardwareContext device),
                               void (*CBRender)(kodi::gui::ClientHandle cbhdl),
                               void (*CBStop)(kodi::gui::ClientHandle cbhdl),
                               bool (*CBDirty)(kodi::gui::ClientHandle cbhdl))
  {
    if (!cbhdl || !CBCreate || !CBRender || !CBStop || !CBDirty)
    {
      kodi::Log(ADDON_LOG_ERROR, "kodi::gui::controls::%s called with nullptr !!!", __FUNCTION__);
      return;
    }
 
    m_interface->kodi_gui->control_rendering->set_callbacks(
        m_interface->kodiBase, m_controlHandle, cbhdl, CBCreate, CBRender, CBStop, CBDirty);
  }
  //--------------------------------------------------------------------------
 
private:
  /*
   * Defined callback functions from Kodi to add-on, for use in parent / child system
   * (is private)!
   */
  static bool OnCreateCB(
      KODI_GUI_CLIENT_HANDLE cbhdl, int x, int y, int w, int h, ADDON_HARDWARE_CONTEXT device)
  {
    static_cast<CRendering*>(cbhdl)->m_renderHelper = kodi::gui::GetRenderHelper();
    return static_cast<CRendering*>(cbhdl)->Create(x, y, w, h, device);
  }
 
  static void OnRenderCB(KODI_GUI_CLIENT_HANDLE cbhdl)
  {
    if (!static_cast<CRendering*>(cbhdl)->m_renderHelper)
      return;
    static_cast<CRendering*>(cbhdl)->m_renderHelper->Begin();
    static_cast<CRendering*>(cbhdl)->Render();
    static_cast<CRendering*>(cbhdl)->m_renderHelper->End();
  }
 
  static void OnStopCB(KODI_GUI_CLIENT_HANDLE cbhdl)
  {
    static_cast<CRendering*>(cbhdl)->Stop();
    static_cast<CRendering*>(cbhdl)->m_renderHelper = nullptr;
  }
 
  static bool OnDirtyCB(KODI_GUI_CLIENT_HANDLE cbhdl)
  {
    return static_cast<CRendering*>(cbhdl)->Dirty();
  }
 
  std::shared_ptr<kodi::gui::IRenderHelper> m_renderHelper;
};
 
} /* namespace controls */
} /* namespace gui */
} /* namespace kodi */
 
#endif /* __cplusplus */