GsOverlayDefs.h

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// Copyright (C) 2002-2017, Open Design Alliance (the "Alliance"). 
// All rights reserved. 
// 
// This software and its documentation and related materials are owned by 
// the Alliance. The software may only be incorporated into application 
// programs owned by members of the Alliance, subject to a signed 
// Membership Agreement and Supplemental Software License Agreement with the
// Alliance. The structure and organization of this software are the valuable  
// trade secrets of the Alliance and its suppliers. The software is also 
// protected by copyright law and international treaty provisions. Application  
// programs incorporating this software must include the following statement 
// with their copyright notices:
//   
//   This application incorporates Teigha(R) software pursuant to a license 
//   agreement with Open Design Alliance.
//   Teigha(R) Copyright (C) 2002-2017 by Open Design Alliance. 
//   All rights reserved.
//
// By use of this software, its documentation or related materials, you 
// acknowledge and accept the above terms.
 
#ifndef __GSOVERLAYDEFS_H_INCLUDED_
#define __GSOVERLAYDEFS_H_INCLUDED_
 
#include "OdArray.h"
 
#include "TD_PackPush.h"
 
enum OdGsOverlayId
{
  kGsMainOverlay = 0,           // "Main" scene overlay
  kGsDirectOverlay,             // "Direct" overlay
  kGsUserFg3Overlay,            // "User Foreground 3" overlay
  kGsUserBg1Overlay,            // "User Background 1" overlay
  kGsUserBg3Overlay,            // "User Background 3" overlay
  kGsUserFg1Overlay,            // "User Foreground 1" overlay
  kGsHighlightOverlay,          // "Highlight" overlay
  kGsHighlightSelectionOverlay, // "Highlight Selection" overlay
  kGsDirectTopmostOverlay,      // "Direct Topmost" overlay
  kGsSpriteOverlay,             // "Sprite" overlay
  kGsContrastOverlay,           // "Contrast" overlay
  kGsUserFg2Overlay,            // "User Foreground 2" overlay
  kGsUserBg2Overlay,            // "User Background 2" overlay
  kNumGsOverlays,               // Number of Gs overlays
  kGsAllOverlays = 0x1FFF,      // Mask for all overlays
  kGsNoOverlays  = 0,           // Mask for no overlays
  kGsUndefinedOverlay = -1      // Special code for undefined overlay
};
 
struct OdGsOverlayMapping
{
  protected:
    enum OverlayRenderOrder
    {
      kUserBg1 = 0, kUserBg2, kUserBg3,
      kMain, kSprite, kDirect, kHighlight, kHighlightSelection, kDirectTopmost, kContrast,
      kUserFg1, kUserFg2, kUserFg3,
      kNumOverlays
    };
  public:
    enum OverlayTypeDefs
    {
      kMainDepth     = 0, // Use main depth buffer
      kNoDepth       = 1, // Don't use depth buffer
      kOwnDepth      = 2, // Use own (alternative) depth buffer
      kNoFrameBuf    = 4, // Use direct rendering without frame buffer
      kHltStyle      = 8, // Draw with highlighting style
      kContrastStyle = 16 // Draw with contast style
    };
    inline static OdUInt32 overlayFlags(OdGsOverlayId id)
    {
      switch (id)
      {
        case kGsUserBg1Overlay:            return kNoDepth;
        case kGsUserBg2Overlay:            return kOwnDepth;
        case kGsUserBg3Overlay:            return kMainDepth;
        case kGsMainOverlay:               return kMainDepth;
        case kGsSpriteOverlay:             return kOwnDepth;
        case kGsDirectOverlay:             return kNoDepth;
        case kGsHighlightOverlay:          return kNoDepth | kNoFrameBuf;
        case kGsHighlightSelectionOverlay: return kNoDepth | kNoFrameBuf | kHltStyle;
        case kGsDirectTopmostOverlay:      return kNoDepth;
        case kGsContrastOverlay:           return kNoDepth | kNoFrameBuf | kContrastStyle;
        case kGsUserFg1Overlay:            return kMainDepth;
        case kGsUserFg2Overlay:            return kOwnDepth;
        case kGsUserFg3Overlay:            return kNoDepth;
        default:                           ODA_FAIL();
      }
      return kNoDepth;
    }
  public:
    inline static OdUInt32 overlayIndexToRenderingOrder(OdGsOverlayId id)
    {
      switch (id)
      {
        case kGsMainOverlay:               return kMain;
        case kGsDirectOverlay:             return kDirect;
        case kGsUserFg3Overlay:            return kUserFg3;
        case kGsUserBg1Overlay:            return kUserBg1;
        case kGsUserBg3Overlay:            return kUserBg3;
        case kGsUserFg1Overlay:            return kUserFg1;
        case kGsHighlightOverlay:          return kHighlight;
        case kGsHighlightSelectionOverlay: return kHighlightSelection;
        case kGsDirectTopmostOverlay:      return kDirectTopmost;
        case kGsSpriteOverlay:             return kSprite;
        case kGsContrastOverlay:           return kContrast;
        case kGsUserFg2Overlay:            return kUserFg2;
        case kGsUserBg2Overlay:            return kUserBg2;
        default:                           ODA_FAIL();
      }
      return kMain;
    }
    inline static OdGsOverlayId overlayRenderingOrderToIndex(OdUInt32 renderOrder)
    {
      switch (renderOrder)
      {
        case kUserBg1:            return kGsUserBg1Overlay;
        case kUserBg2:            return kGsUserBg2Overlay;
        case kUserBg3:            return kGsUserBg3Overlay;
        case kMain:               return kGsMainOverlay;
        case kSprite:             return kGsSpriteOverlay;
        case kDirect:             return kGsDirectOverlay;
        case kHighlight:          return kGsHighlightOverlay;
        case kHighlightSelection: return kGsHighlightSelectionOverlay;
        case kDirectTopmost:      return kGsDirectTopmostOverlay;
        case kContrast:           return kGsContrastOverlay;
        case kUserFg1:            return kGsUserFg1Overlay;
        case kUserFg2:            return kGsUserFg2Overlay;
        case kUserFg3:            return kGsUserFg3Overlay;
        default:                  ODA_FAIL();
      }
      return kGsMainOverlay;
    }
    inline static bool validateDefinitions(OdUInt32 gsModelDef)
    {
      return (gsModelDef == kNumOverlays) && (gsModelDef == kNumGsOverlays);
    }
    inline static bool validateOverlayIndex(OdGsOverlayId id)
    {
      return (id >= kGsMainOverlay) && (id < kNumGsOverlays);
    }
    inline static bool validateRenderingOrder(OdUInt32 renderOrder)
    { // #CORE-12139 : expression is always true
      return /* (renderOrder >= kUserBg1) && */ (renderOrder < kNumOverlays);
    }
};
 
class OdGsOverlayDataPlaceholder
{
  public:
    OdGsOverlayDataPlaceholder() { }
    ~OdGsOverlayDataPlaceholder() { }
};
 
template <typename OverlayDataType = OdGsOverlayDataPlaceholder>
class OdGsOverlayDataContainer
{
  public: // public allocator
    struct Allocator
    {
      virtual OverlayDataType *createData() { return new OverlayDataType(); }
      virtual void deleteData(OverlayDataType *pObj) { delete pObj; }
    };
  protected: // data structures and members
    struct OverlayData
    {
      OverlayDataType* m_data;
      OdUInt32 m_numOverlayRefs;
      OverlayData() : m_data(NULL), m_numOverlayRefs(0) { }
    };
    typedef OdArray<OverlayData> OverlayDataArray;
    mutable OverlayDataArray m_overlaysData;
    Allocator        m_defAllocator;
    Allocator       *m_pAllocator;
    mutable OdUInt32 m_uActiveOverlays;
    OdUInt32         m_uInvalidOverlays;
  protected: // implementations
    void subAllocator(Allocator *pAllocator)
    {
      if ((pAllocator != m_pAllocator) && (pAllocator != NULL))
      { // Apply recreation of OverlayData nodes
        const OdUInt32 nOverlays = m_overlaysData.size();
        OverlayData *pOverlays = m_overlaysData.asArrayPtr();
        for (OdUInt32 nOverlay = 0; nOverlay < nOverlays; nOverlay++)
        {
          if (pOverlays[nOverlay].m_data)
          {
            OverlayDataType *pNewData = pAllocator->createData();
            *pNewData = *pOverlays[nOverlay].m_data;
            m_pAllocator->deleteData(pOverlays[nOverlay].m_data);
            pOverlays[nOverlay].m_data = pNewData;
          }
        }
        m_pAllocator = pAllocator;
      }
    }
    void activate(OdGsOverlayId id) const
    {
      if (m_overlaysData.size() <= (unsigned)id)
        m_overlaysData.resize(id + 1);
      OverlayData &overlay = m_overlaysData.at(id);
      if (!overlay.m_numOverlayRefs)
        overlay.m_data = m_pAllocator->createData();
      overlay.m_numOverlayRefs++;
      SETBIT_1(m_uActiveOverlays, 1 << id);
    }
    void deactivate(OdGsOverlayId id)
    {
      if (m_overlaysData.size() > (unsigned)id)
      {
        OverlayData &overlay = m_overlaysData.at(id);
        if (overlay.m_numOverlayRefs)
        {
          overlay.m_numOverlayRefs--;
          if (!overlay.m_numOverlayRefs)
          {
            m_pAllocator->deleteData(overlay.m_data);
            overlay.m_data = NULL;
            SETBIT_0(m_uActiveOverlays, 1 << id);
            SETBIT_0(m_uInvalidOverlays, 1 << id);
          }
        }
      }
    }
  public:
    OdGsOverlayDataContainer()
      : m_overlaysData(1, 1)
      , m_uActiveOverlays(0)
      , m_uInvalidOverlays(0)
    { // Always keep main overlay activated
      m_pAllocator = &m_defAllocator;
      activate(kGsMainOverlay);
    }
    ~OdGsOverlayDataContainer()
    {
      const OdUInt32 nOverlays = m_overlaysData.size();
      OverlayData *pOverlays = m_overlaysData.asArrayPtr();
      for (OdUInt32 nOverlay = 0; nOverlay < nOverlays; nOverlay++)
      {
        if (pOverlays[nOverlay].m_data)
          m_pAllocator->deleteData(pOverlays[nOverlay].m_data);
      }
    }
 
    void substituteAllocator(Allocator *pAllocator)
    {
      subAllocator(pAllocator);
    }
    void resetAllocator()
    {
      subAllocator(&m_defAllocator);
    }
 
    bool activateOverlay(OdGsOverlayId id)
    {
      const bool bActive = isOverlayActive(id);
      activate(id);
      return bActive != isOverlayActive(id);
    }
    bool deactivateOverlay(OdGsOverlayId id)
    {
      const bool bActive = isOverlayActive(id);
      deactivate(id);
      return bActive != isOverlayActive(id);
    }
 
    OdUInt32 activeOverlays() const { return m_uActiveOverlays; }
    bool isOverlayActive(OdGsOverlayId id) const { return GETBIT(m_uActiveOverlays, 1 << id); }
    bool isMultipleOverlays() const { return (m_uActiveOverlays & ~1) != 0; }
 
    OverlayDataType *getOverlayData(OdGsOverlayId id, bool bActivate = false)
    {
      if (!isOverlayActive(id))
      {
        if (bActivate)
          activate(id);
        else
          return NULL;
      }
      return m_overlaysData[id].m_data;
    }
    const OverlayDataType *getOverlayData(OdGsOverlayId id, bool bActivate = false) const
    {
      if (!isOverlayActive(id))
      {
        if (bActivate)
          activate(id);
        else
          return NULL;
      }
      return m_overlaysData[id].m_data;
    }
 
    struct ForEach
    {
      virtual bool call(OdGsOverlayId overlayId, OverlayDataType *pData) = 0;
    };
    bool execForEach(ForEach &impl, OdUInt32 nMask = kGsAllOverlays) const
    {
      OdUInt32 bitSet = m_uActiveOverlays & nMask, nOlay = 0;
      while (bitSet)
      {
        if (GETBIT(bitSet, 1 << nOlay))
        {
          if (!impl.call((OdGsOverlayId)nOlay, m_overlaysData[nOlay].m_data))
            return false;
          SETBIT_0(bitSet, 1 << nOlay);
        }
        nOlay++;
      }
      return true;
    }
 
    class Iterator
    {
      protected:
        OverlayDataArray &overlaysData;
        OdUInt32 bitSet, nOlay;
        friend class OdGsOverlayDataContainer<OverlayDataType>;
        Iterator(OverlayDataArray &_overlaysData, OdUInt32 _bitSet)
          : overlaysData(_overlaysData), bitSet(_bitSet), nOlay(0)
        { init(); }
        void init()
        {
          if (bitSet)
          {
            while (!GETBIT(bitSet, 1 << nOlay))
              nOlay++;
          }
        }
      public:
        bool next()
        {
          SETBIT_0(bitSet, 1 << nOlay);
          if (bitSet)
          {
            do { nOlay++; } while (!GETBIT(bitSet, 1 << nOlay));
            return true;
          }
          return false;
        }
        bool done() const { return !bitSet; }
        OdGsOverlayId overlayId() const { return (OdGsOverlayId)nOlay; }
        const OverlayDataType *overlayData() const { return overlaysData.getPtr()[nOlay].m_data; }
        OverlayDataType *overlayData() { return overlaysData[nOlay].m_data; }
    };
    Iterator newIterator(OdUInt32 nMask = kGsAllOverlays) const
    {
      return Iterator(m_overlaysData, m_uActiveOverlays & nMask);
    }
 
    OdUInt32 invalidOverlays() const { return m_uInvalidOverlays; }
    bool isOverlayInvalid(OdGsOverlayId id) const { return GETBIT(m_uInvalidOverlays, 1 << id); }
    void setOverlayInvalid(OdGsOverlayId id, bool bSet = true) { SETBIT(m_uInvalidOverlays, 1 << id, bSet); }
    void setOverlaysInvalid(bool bSet = true) { SETBIT(m_uInvalidOverlays, kGsAllOverlays & m_uActiveOverlays, bSet); }
    void setOverlaysInvalid(OdUInt32 nOverlays, bool bSet = true) { SETBIT(m_uInvalidOverlays, nOverlays & m_uActiveOverlays, bSet); }
    bool isAnyOverlayInvalid() const { return (m_uInvalidOverlays & m_uActiveOverlays) != 0; }
    bool isAllOverlaysIvalid() const { return (m_uInvalidOverlays & m_uActiveOverlays) == m_uActiveOverlays; }
};
 
#include "TD_PackPop.h"
 
#endif // __GSOVERLAYDEFS_H_INCLUDED_