IMG/IMG_TileLoader.h

Go to the documentation of this file.

/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * Produced by:
 *      Mark Elendt
 *      Side Effects Software Inc
 *      477 Richmond Street West
 *      Toronto, Ontario
 *      Canada   M5V 3E7
 *      416-504-9876
 *
 * NAME:        IMG_TileLoader.h ( IMG Library, C++)
 *
 * COMMENTS:    This is a socket interface for loading a raster using a socket
 *              interface in a separate thread.  It uses IMG_TileRead as an
 *              interface to read the raster data.  It expects data in the
 *              format output by IMG_TileWrite.
 */

#ifndef __IMG_TileLoader__
#define __IMG_TileLoader__

#include "IMG_API.h"
class UT_Thread;
class PXL_Raster;
class img_ImageLoader;

class IMG_API IMG_TileLoader {
public:
     IMG_TileLoader();
    ~IMG_TileLoader();

    void                 startServer();
    void                 stopServer();
    bool                 isServerRunning()  { return myPort; }

    // Called when user wants the raster
    PXL_Raster          *lockRaster();
    // Called when user is finished with the raster.
    void                 releaseRaster();

    int                  isStillRendering() const
                         {
                             return myRendering || myExpectRender;
                         }
    int                  isExpecting() const
                         {
                             return myExpectRender;
                         }
    void                 expectRender() { myExpectRender = 1; }

    // This cannot be called while the raster is locked!
    void                 terminateLoad();

    void                 getYRange(int &min, int &max) const;
    int                  getServerPort() const  { return myPort; }
    int                  getTilesRead() const   { return myTilesRead; }

    void                 setClearColor(float r, float g, float b, float a);
    void                 setFillAlphaMode(int onoff);

private:
    static void         *serverThread(void *);

    img_ImageLoader     *myLoader;
    UT_Thread           *myThread;
    volatile int         myPort;
    volatile int         myTerminate;
    int                  myRendering, myExpectRender;
    volatile int         myTilesRead;
};

#endif

---