src/graphics/GraphicsCacheItem.C

   1 // -*- C++ -*-
   2 /* This file is part of
   3  * =================================================
   4  *
   5  *          LyX, The Document Processor
   6  *          Copyright 1995 Matthias Ettrich.
   7  *          Copyright 1995-2000 The LyX Team.
   8  *
   9  *          This file Copyright 2000 Baruch Even
  10  * ================================================= */
  11
  12 #include <config.h>
  13
  14 #ifdef __GNUG__
  15 #pragma implementation
  16 #endif
  17
  18 #include "graphics/GraphicsCache.h"
  19 #include "graphics/GraphicsCacheItem.h"
  20 #include "graphics/GraphicsCacheItem_pimpl.h"
  21
  22 GraphicsCacheItem::GraphicsCacheItem()
  23         : pimpl(new GraphicsCacheItem_pimpl)
  24 {
  25         pimpl->refCount = 1;
  26 }
  27
  28 GraphicsCacheItem::~GraphicsCacheItem()
  29 {
  30         destroy();
  31 }
  32
  33 bool
  34 GraphicsCacheItem::setFilename(string const & filename)
  35 {
  36         filename_ = filename;
  37         return pimpl->setFilename(filename);
  38 }
  39
  40 GraphicsCacheItem::GraphicsCacheItem(GraphicsCacheItem const & gci)
  41 {
  42         pimpl = 0;
  43         copy(gci);
  44 }
  45
  46 GraphicsCacheItem const &
  47 GraphicsCacheItem::operator=(GraphicsCacheItem const & gci)
  48 {
  49         // Are we trying to copy the object onto itself.
  50         if (this == &gci)
  51                 return *this;
  52
  53         // Destory old copy
  54         destroy();
  55
  56         // And then copy new object.
  57         copy(gci);
  58
  59         return *this;
  60 }
  61
  62 void
  63 GraphicsCacheItem::copy(GraphicsCacheItem const & gci)
  64 {
  65         pimpl = gci.pimpl;
  66         ++(pimpl->refCount);
  67 }
  68
  69 void
  70 GraphicsCacheItem::destroy()
  71 {
  72         if (pimpl) {
  73                 --(pimpl->refCount);
  74                 if (pimpl->refCount == 0) {
  75                         delete pimpl;
  76                         GraphicsCache * gc = GraphicsCache::getInstance();
  77                         gc->removeFile(filename_);
  78                 }
  79         }
  80 }
  81
  82 GraphicsCacheItem::ImageStatus
  83 GraphicsCacheItem::getImageStatus() const { return pimpl->imageStatus_; }
  84
  85 int
  86 GraphicsCacheItem::getHeight() const { return pimpl->height_; }
  87
  88 int
  89 GraphicsCacheItem::getWidth() const { return pimpl->width_; }
  90
  91 Pixmap
  92 GraphicsCacheItem::getImage() const { return pimpl->pixmap_; }