/* vim:tabstop=4:expandtab:shiftwidth=4 *  * Idesk -- XPngImage.cpp * * Copyright (c) 2002, Chris (nikon) (nikon@sc.rr.com) * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: *  *      Redistributions of source code must retain the above copyright *      notice, this list of conditions and the following disclaimer. *       *      Redistributions in binary form must reproduce the above copyright *      notice, this list of conditions and the following disclaimer in the *      documentation and/or other materials provided with the distribution. *       *      Neither the name of the <ORGANIZATION> nor the names of its *      contributors may be used to endorse or promote products derived from *      this software without specific prior written permission. * * (See the included file COPYING / BSD ) */#include "XPngImage.h"#include "XIconWithShadow.h"XPngImage::XPngImage(AbstractContainer * c, AbstractIcon * iParent,                         AbstractConfig * con, AbstractIconConfig * iConfig)                            : XIdeskImage(c, iParent, con, iConfig){   }XPngImage::~XPngImage(){}void XPngImage::configure(){    XIdeskImage::configure();}void XPngImage::createPicture(){    string filename = iconConfig->getPictureFilename();        ImlibImage *image;    if( loadPng( filename ) == true )    {        image = Imlib_load_image( imlibData, (char*)filename.c_str() );        if(!image)        {            cout << "Couldn't find image " << filename << " bailing\n";            _exit(1);        }        else        {            width = image->rgb_width;            height = image->rgb_height;        }        Imlib_kill_image(imlibData, image);    }    else    {        cout << "Can't load: " << filename << " bailing -- "             << iconConfig->getCaption() << endl             << "Check to see if the image and path to image is valid\n";    }}bool XPngImage::loadPng(const string &filename){        unsigned char *ptr, *aptr, *aptr2, **lines, *line, r, g, b, a;    png_structp   pngdata;    png_infop     pnginfo;    png_uint_32   w, h;    FILE          *file;    int           color, depth, interlace;    if ( !(file = fopen( (char*)filename.c_str(), "r" )) )        return false;    pngdata = png_create_read_struct( PNG_LIBPNG_VER_STRING, NULL, NULL, NULL );    if (!pngdata)        return false;        pnginfo = png_create_info_struct( pngdata );        if (!pnginfo)    {        png_destroy_read_struct( &pngdata, NULL, NULL );        return false;    }    if (setjmp(pngdata->jmpbuf))    {        png_destroy_read_struct( &pngdata, NULL, NULL );        return false;    }        if(color == PNG_COLOR_TYPE_RGB_ALPHA)    {        png_destroy_read_struct( &pngdata, NULL, NULL );        return false;    }    png_init_io(pngdata, file);    png_read_info(pngdata, pnginfo);    png_get_IHDR(pngdata, pnginfo, &w, &h, &depth, &color, &interlace,                 NULL, NULL);    width = w;    height = h;    if (color == PNG_COLOR_TYPE_PALETTE)        png_set_expand(pngdata);    png_set_strip_16(pngdata);    png_set_packing(pngdata);    if(png_get_valid(pngdata,pnginfo,PNG_INFO_tRNS))        png_set_expand( pngdata );        png_set_filler( pngdata, 0xff, PNG_FILLER_AFTER );    rgb = new unsigned char[width * height * 3];    alpha = new unsigned char[width * height];    alpha2 = new unsigned char[width * height];    if (!rgb || !alpha || !alpha2)    {        png_destroy_read_struct( &pngdata, NULL, NULL );        return false;    }        lines = new unsigned char*[height];    if (!lines)    {        delete [] rgb;        delete [] alpha;        delete [] alpha2;        png_destroy_read_struct( &pngdata, NULL, NULL );        return false;    }        for(int i=0; i< height; i++)    {        lines[i] = new unsigned char[width * 4];                if (!lines[i] )        {            delete [] rgb;            delete [] alpha;            delete [] alpha2;            png_destroy_read_struct( &pngdata, NULL, NULL );            return false;        }    }    hasAlpha = true;    png_read_image(pngdata, lines);    png_destroy_read_struct(&pngdata, &pnginfo, NULL);    ptr = rgb;    aptr = alpha;    aptr2 = alpha2;    //DesktopIconConfig * dIconConfig =     //  dynamic_cast<DesktopIconConfig *>(iconConfig);        for(int y = 0; y < height; y++)    {        line = lines[y];        for (int x = 0; x < width; x++)        {            if (color == PNG_COLOR_TYPE_GRAY_ALPHA)            {                r = g = b = *line++;                a = *line++;            }            else if (color == PNG_COLOR_TYPE_GRAY)            {                r = g = b = *line++;                a = 255;            }            else            {                r = *line++;                g = *line++;                b = *line++;                a = *line++;            }                        *ptr++ = r;            *ptr++ = g;            *ptr++ = b;                    // Transparency matrix.            if( ( a - transparency ) < 0 )            {                *aptr++ = 0;                *aptr2++ = a;            }            else             {                *aptr++ = a - transparency;                *aptr2++ = a;            }        }    }          for(int i = 0; i < height; i++)        delete [] lines[i];        delete [] lines;        return true;}/****************************************************************************\ * XPngImageShadow -- class implementation                                  *\****************************************************************************/XPngImageShadow::XPngImageShadow(AbstractContainer * c,                                 AbstractIcon * iParent,                                 AbstractConfig * con,                                 AbstractIconConfig * iConfig)                                    : XIdeskImage(c, iParent, con, iConfig),                                      XPngImage(c, iParent, con, iConfig),                                      XShadowImage(c, iParent, con, iConfig){}void XPngImageShadow::configure(){    XPngImage::configure();    XShadowImage::configure();}void XPngImageShadow::refreshIcon(){    XShadowImage::refreshIcon();    //XPngImage::refreshIcon(); calls repaint, but resets the new x, y values    repaint();}