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 #include "frontends/support/LyXImage.h"
  22
  23
  24 GraphicsCacheItem::GraphicsCacheItem()
  25         : pimpl(new GraphicsCacheItem_pimpl)
  26 {
  27         pimpl->refCount = 1;
  28 }
  29
  30
  31 GraphicsCacheItem::~GraphicsCacheItem()
  32 {
  33         destroy();
  34 }
  35
  36
  37 bool
  38 GraphicsCacheItem::setFilename(string const & filename)
  39 {
  40         filename_ = filename;
  41         return pimpl->setFilename(filename);
  42 }
  43
  44
  45 GraphicsCacheItem::GraphicsCacheItem(GraphicsCacheItem const & gci)
  46 {
  47         pimpl = 0;
  48         copy(gci);
  49 }
  50
  51 GraphicsCacheItem &
  52 GraphicsCacheItem::operator=(GraphicsCacheItem const & gci)
  53 {
  54         // Are we trying to copy the object onto itself.
  55         if (this == &gci)
  56                 return *this;
  57
  58         // Destroy old copy
  59         destroy();
  60
  61         // And then copy new object.
  62         copy(gci);
  63
  64         return *this;
  65 }
  66
  67 GraphicsCacheItem *
  68 GraphicsCacheItem::Clone() const
  69 {
  70         return new GraphicsCacheItem(*this);
  71 }
  72
  73 void
  74 GraphicsCacheItem::copy(GraphicsCacheItem const & gci)
  75 {
  76         pimpl = gci.pimpl;
  77         ++(pimpl->refCount);
  78 }
  79
  80
  81 void
  82 GraphicsCacheItem::destroy()
  83 {
  84         if (pimpl) {
  85                 --(pimpl->refCount);
  86                 if (pimpl->refCount == 0) {
  87                         {   // We are deleting the pimpl but we want to mark it deleted
  88                                 // even before it is deleted.
  89                                 GraphicsCacheItem_pimpl * temp = pimpl;
  90                                 pimpl = 0;
  91                                 delete temp;
  92                         }
  93                         GraphicsCache * gc = GraphicsCache::getInstance();
  94                         gc->removeFile(filename_);
  95                 }
  96         }
  97 }
  98
  99
 100 GraphicsCacheItem::ImageStatus
 101 GraphicsCacheItem::getImageStatus() const { return pimpl->imageStatus_; }
 102
 103
 104 int
 105 GraphicsCacheItem::getHeight() const { return pimpl->height_; }
 106
 107
 108 int
 109 GraphicsCacheItem::getWidth() const { return pimpl->width_; }
 110
 111 LyXImage *
 112 GraphicsCacheItem::getImage() const { return pimpl->pixmap_; }