Source

Coin / src / caches / SoGlyphCache.cpp

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/*!
  \class SoGlyphCache include/Inventor/SoGlyphCache.h
  The SoGlyphClass is used to cache glyphs.

  \internal
*/

#include "caches/SoGlyphCache.h"

#include <cassert>

#include <Inventor/lists/SbList.h>
#include <Inventor/elements/SoFontNameElement.h>
#include <Inventor/elements/SoFontSizeElement.h>
#include <Inventor/elements/SoComplexityElement.h>
#include <Inventor/errors/SoDebugError.h>

#include "tidbitsp.h"

class SoGlyphCacheP {
public:
  SbList <cc_glyph2d*> glyphlist2d;
  SbList <cc_glyph3d*> glyphlist3d;
  cc_font_specification * fontspec;
};

#define PRIVATE(obj) ((obj)->pimpl)

SoGlyphCache::SoGlyphCache(SoState * state)
  : SoCache(state)
{
  PRIVATE(this) = new SoGlyphCacheP;
  PRIVATE(this)->fontspec = NULL;

#if COIN_DEBUG
  if (coin_debug_caching_level() > 0) {
    SoDebugError::postInfo("SoGlyphCache::SoGlyphCache",
                           "Cache constructed: %p", this);

  }
#endif // debug
}

SoGlyphCache::~SoGlyphCache()
{
#if COIN_DEBUG
  if (coin_debug_caching_level() > 0) {
    SoDebugError::postInfo("SoGlyphCache::~SoGlyphCache",
                           "Cache destructed: %p", this);

  }
#endif // debug

  int i;
  this->readFontspec(NULL);
  for (i = 0; i < PRIVATE(this)->glyphlist2d.getLength(); i++) {
    cc_glyph2d_unref(PRIVATE(this)->glyphlist2d[i]);
  }
  for (i = 0; i < PRIVATE(this)->glyphlist3d.getLength(); i++) {
    cc_glyph3d_unref(PRIVATE(this)->glyphlist3d[i]);
  }
  delete PRIVATE(this);
}

/*
  Add a glyph that is created using cc_glyph2d_ref(). The cache will
  call cc_glyph2d_unref() when destructed.
*/
void
SoGlyphCache::addGlyph(cc_glyph2d * glyph)
{
  PRIVATE(this)->glyphlist2d.append(glyph);
}

/*
  Add a glyph that is created using cc_glyph2d_ref(). The cache will
  call cc_glyph2d_unref() when destructed.
*/

void
SoGlyphCache::addGlyph(cc_glyph3d * glyph)
{
  PRIVATE(this)->glyphlist3d.append(glyph);
}

/*!
  Read and store current fontspec. Will create cache dependencies
  since some elements are read. We can't read the fontspec in the
  constructor since we need to update SoCacheElement before reading
  the elements.
*/
void
SoGlyphCache::readFontspec(SoState * state)
{
  if (PRIVATE(this)->fontspec) {
    cc_fontspec_clean(PRIVATE(this)->fontspec);
    delete PRIVATE(this)->fontspec;
    PRIVATE(this)->fontspec = NULL;
  }
  if (state) {
    PRIVATE(this)->fontspec = new cc_font_specification;
    cc_fontspec_construct(PRIVATE(this)->fontspec,
                          SoFontNameElement::get(state).getString(),
                          SoFontSizeElement::get(state),
                          SoComplexityElement::get(state));
  }
}

/*!
  Returns the cached fontspec.
*/
const cc_font_specification *
SoGlyphCache::getCachedFontspec(void) const
{
  assert(PRIVATE(this)->fontspec);
  return PRIVATE(this)->fontspec;
}


#undef PRIVATE
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