- gvinterpreter using libgs, doesnt work, gsapi fails to provide an instance, no idea why... moving to owrk on commandline gs
svn path=/trunk/playground/graphics/oKular/kpdf/; revision=437870remotes/origin/okular3-playground
Piotr Szymanski
21 years ago
parent
9d66ee1670
commit
fdf0f2ff51
3 changed files with 304 additions and 0 deletions
@ -0,0 +1,14 @@ |
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kde_module_LTLIBRARIES = \
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libokularGenerator_ghostview.la
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INCLUDES = -I$(srcdir)/../.. -I$(top_builddir)/kpdf $(all_includes)
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libokularGenerator_ghostview_la_LIBADD = $(top_builddir)/kpdf/core/libkpdfcore.la $(top_builddir)/kpdf/conf/libkpdfconf.la -lgs -lkdeui -lkdeprint
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libokularGenerator_ghostview_la_LDFLAGS = $(all_libraries) -module $(KDE_PLUGIN)
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libokularGenerator_ghostview_la_SOURCES = generator_ghostview.cpp dscparse_adapter.cpp dscparse.cpp interpreter_comm.cpp
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KDE_OPTIONS = nofinal
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kde_services_DATA = libokularGenerator_ghostview.desktop
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# generator_pdf.lo: ../../conf/settings.h
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@ -0,0 +1,253 @@ |
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/***************************************************************************
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* Copyright (C) 1997-2005 the KGhostView authors. See file GV_AUTHORS. * |
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* Copyright (C) 2005 by Piotr Szymanski <niedakh@gmail.com> * |
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* * |
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* Many portions of this file are based on kghostview's kpswidget code * |
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* * |
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* This program is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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***************************************************************************/ |
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#include <kdebug.h> |
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#include <qpixmap.h> |
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#include "interpreter.h" |
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#include "gs/iapi.h" |
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#include "gs/ierrors.h" |
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int intPow(int x, int n) |
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{ |
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int z; |
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if (n == 0) |
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return 1; |
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else if (n == 1) |
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return x; |
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else if ((n%2)==0) |
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{ |
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// x^2n=x^n * x^n;
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z=intPow(x,n/2); |
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return z*z; |
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} |
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else |
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{ |
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// x^(2n+1)=x^2n * x;
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z=intPow(x,(n-1)/2); |
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return z*z*x; |
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} |
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} |
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QImage* generatedImage=0; |
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int size(void *handle, void *device, int width, int height, |
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int raster, unsigned int format, unsigned char *pimage) |
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{ |
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int depth = format & DISPLAY_DEPTH_MASK; |
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int color = format & DISPLAY_COLORS_MASK; |
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bool lEndian = (format & DISPLAY_ENDIAN_MASK) == DISPLAY_LITTLEENDIAN ; |
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int dep= QPixmap::defaultDepth () ; |
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int numCol = (color == DISPLAY_COLORS_GRAY ) ? 1 : intPow( 2, dep ) ; |
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switch (depth) |
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{ |
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case DISPLAY_DEPTH_1: |
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numCol=2; |
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dep=1; |
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case DISPLAY_DEPTH_2: |
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dep=2; |
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numCol=4; |
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break; |
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case DISPLAY_DEPTH_4: |
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dep=4; |
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numCol=16; |
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break; |
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case DISPLAY_DEPTH_8: |
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dep=8; |
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numCol=256; |
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break; |
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case DISPLAY_DEPTH_12: |
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dep=12; |
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numCol=4096; |
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break; |
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case DISPLAY_DEPTH_16: |
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dep=16; |
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numCol=65536; |
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break; |
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} |
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kdDebug() << "size called" << endl; |
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generatedImage = new QImage (pimage, width, height,
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dep, (QRgb*) 0, numCol, (lEndian) ? QImage::LittleEndian : QImage::BigEndian ); |
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return 0; |
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} |
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/*
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device.size = sizeof ( display_callback ); |
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device.version_major = DISPLAY_VERSION_MAJOR; |
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device.version_minor = DISPLAY_VERSION_MINOR; |
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device.display_open = NULL; |
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device.display_preclose = NULL; |
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device.display_close = NULL; |
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device.display_presize = NULL; |
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device.display_size = & size; |
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device.display_sync = NULL; |
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device.display_page = NULL; |
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device.display_update = NULL; |
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device.display_memalloc = NULL; |
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device.display_memfree = NULL; */ |
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display_callback device= |
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{ |
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sizeof ( display_callback ), |
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DISPLAY_VERSION_MAJOR, |
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DISPLAY_VERSION_MINOR, |
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NULL, |
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NULL, |
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NULL, |
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NULL, |
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& size, |
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NULL, |
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NULL, |
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NULL, |
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NULL, /* memalloc */ |
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NULL |
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#if DISPLAY_VERSION_MAJOR >= 2 |
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,NULL |
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#endif |
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}; |
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GVInterpreter::GVInterpreter(QStringList *list) |
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{ |
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gsArgs=list; |
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int exit=gsapi_new_instance(&ghostScriptInstance,NULL); |
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if (exit != 0) |
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{ |
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kdDebug() << "sth is very wrong! " << endl; |
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} |
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int exit_i=gsapi_init_with_args (&ghostScriptInstance,gsArgs->count(),argsToChar()); |
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if (exit_i != 0) |
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{ |
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kdDebug() << "screwed sth with args?! " << endl; |
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} |
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} |
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GVInterpreter::~GVInterpreter() |
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{ |
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gsapi_exit(&ghostScriptInstance); |
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gsapi_delete_instance(&ghostScriptInstance); |
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delete gsArgs; |
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} |
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bool GVInterpreter::run(FILE * tmp, long begin , unsigned int lenght) |
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{ |
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if (fseek(tmp,begin, SEEK_SET)) |
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return false; |
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char * buf = new char [4096]; |
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int read=4096; |
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int exit_code, left=lenght; |
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bool errorExit=false; |
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interpreterLock.lock(); |
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gsapi_set_display_callback(&ghostScriptInstance, &device); |
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gsapi_run_string_begin (&ghostScriptInstance, 0, &exit_code); |
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if (exit_code) |
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errorExit=handleExit(exit_code); |
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if (errorExit) |
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return false; |
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while (lenght) |
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{ |
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read=fread (buf,sizeof(char),read,tmp); |
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gsapi_run_string_continue (&ghostScriptInstance, buf, read, 0, &exit_code);; |
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if (exit_code) |
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errorExit=handleExit(exit_code); |
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if (errorExit) |
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return false; |
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left-=read; |
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} |
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gsapi_run_string_end (&ghostScriptInstance, 0, &exit_code); |
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if (exit_code) |
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errorExit=handleExit(exit_code); |
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if (errorExit) |
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return false; |
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gsapi_set_display_callback(&ghostScriptInstance, NULL); |
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interpreterLock.unlock(); |
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m_img=generatedImage; |
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return true; |
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} |
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bool GVInterpreter::handleExit(int code) |
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{ |
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switch (code) |
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{ |
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// quit was issued
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case e_Quit: |
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// gs -h was run
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case e_Info: |
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//gsapi_exit
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return false; |
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// no error or we need further input
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case 0: |
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case e_NeedInput: |
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return true; |
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// <0 - error
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default: |
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return false; |
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} |
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} |
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char** GVInterpreter::argsToChar() |
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{ |
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char ** ret; |
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int i,size=gsArgs->count()+1; |
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ret = static_cast <char **> (new char* [size]); |
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for (i=0;i<size;i++) |
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{ |
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ret[i+1]=const_cast <char*> ((*gsArgs)[i].ascii()); |
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kdDebug() << "Arg nr " << i << " : " << (*gsArgs)[i].ascii() << endl ; |
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} |
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//ret[size+1]=0;
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return ret; |
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} |
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/*
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bool GVInterpreter::x11Event( XEvent* e ) |
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{ |
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if( e->type == ClientMessage ) |
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{ |
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_gsWindow = e->xclient.data.l[0]; |
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if( e->xclient.message_type == _atoms[PAGE] ) |
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{ |
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kdDebug(4500) << "KPSWidget: received PAGE" << endl; |
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interpreterLock.unLock(); |
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unsetCursor(); |
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emit newPageImage( _backgroundPixmap ); |
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if ( _doubleBuffer )
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setErasePixmap( _backgroundPixmap ); |
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return true; |
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} |
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else if( e->xclient.message_type == _atoms[DONE] ) |
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{ |
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kdDebug(4500) << "KPSWidget: received DONE" << endl; |
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stopInterpreter(); |
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return true; |
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} |
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} |
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return QWidget::x11Event( e ); |
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}*/ |
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@ -0,0 +1,37 @@ |
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/***************************************************************************
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* Copyright (C) 2005 by Piotr Szymanski <niedakh@gmail.com> * |
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* * |
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* Many portions of this file are based on kghostview's kpswidget code * |
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* * |
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* This program is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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***************************************************************************/ |
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#include <gs/gdevdsp.h> |
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#include <stdio.h> |
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#include <qimage.h> |
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#include <qstringlist.h> |
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#include <qmutex.h> |
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class GVInterpreter |
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{ |
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public: |
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GVInterpreter(QStringList * list ); |
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~GVInterpreter(); |
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bool handleExit(int code); |
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bool run (FILE * tmp, long begin , unsigned int lenght); |
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void setGhostscriptArguments( QStringList* list) |
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{ interpreterLock.lock(); gsArgs=list; interpreterLock.unlock(); }; |
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bool locked () { return interpreterLock.locked() ;} ; |
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QImage* m_img; |
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private: |
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char** argsToChar(); |
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void * ghostScriptInstance; |
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QString gsPath; |
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QStringList *gsArgs; |
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QMutex interpreterLock; |
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}; |
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