ImageOutputDev.h

//========================================================================
//
// ImageOutputDev.h
//
// Copyright 1998-2002 Glyph & Cog, LLC
//
//========================================================================
 
#ifndef IMAGEOUTPUTDEV_H
#define IMAGEOUTPUTDEV_H
 
#include <aconf.h>
 
#ifdef USE_GCC_PRAGMAS
#pragma interface
#endif
 
#include <stdio.h>
#include "gtypes.h"
#include "OutputDev.h"
 
class GfxState;
 
//------------------------------------------------------------------------
// ImageOutputDev
//------------------------------------------------------------------------
 
class ImageOutputDev: public OutputDev {
public:
 
  // Create an OutputDev which will write images to files named
  // <fileRoot>-NNN.<type>.  Normally, all images are written as PBM
  // (.pbm) or PPM (.ppm) files.  If <dumpJPEG> is set, JPEG images are
  // written as JPEG (.jpg) files.
  ImageOutputDev(char *fileRootA, GBool dumpJPEGA);
 
  // Destructor.
  virtual ~ImageOutputDev();
 
  // Check if file was successfully created.
  virtual GBool isOk() { return ok; }
 
  // Does this device use beginType3Char/endType3Char?  Otherwise,
  // text in Type 3 fonts will be drawn with drawChar/drawString.
  virtual GBool interpretType3Chars() { return gFalse; }
 
  // Does this device need non-text content?
  virtual GBool needNonText() { return gFalse; }
 
  //---- get info about output device
 
  // Does this device use upside-down coordinates?
  // (Upside-down means (0,0) is the top left corner of the page.)
  virtual GBool upsideDown() { return gTrue; }
 
  // Does this device use drawChar() or drawString()?
  virtual GBool useDrawChar() { return gFalse; }
 
  //----- image drawing
  virtual void drawImageMask(GfxState *state, Object *ref, Stream *str,
                 int width, int height, GBool invert,
                 GBool inlineImg);
  virtual void drawImage(GfxState *state, Object *ref, Stream *str,
             int width, int height, GfxImageColorMap *colorMap,
             int *maskColors, GBool inlineImg);
 
private:
 
  char *fileRoot;       // root of output file names
  char *fileName;       // buffer for output file names
  GBool dumpJPEG;       // set to dump native JPEG files
  int imgNum;           // current image number
  GBool ok;         // set up ok?
};
 
#endif