You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
529 lines
14 KiB
529 lines
14 KiB
/**
|
|
* Copyright (C) 2000-2003 the KGhostView authors. See file AUTHORS.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include "kpswidget.h"
|
|
|
|
#include <stdlib.h>
|
|
#include <math.h>
|
|
|
|
#include <tqstringlist.h>
|
|
|
|
#include <tdeapplication.h>
|
|
#include <kdebug.h>
|
|
#include <tdelocale.h>
|
|
#include <tdemessagebox.h>
|
|
#include <kprocess.h>
|
|
|
|
#include "configuration.h"
|
|
|
|
#include <X11/Xlib.h>
|
|
#include <X11/Xatom.h>
|
|
|
|
int handler( Display* d, XErrorEvent* e )
|
|
{
|
|
char msg[80], req[80], number[80];
|
|
|
|
XGetErrorText( d, e->error_code, msg, sizeof( msg ) );
|
|
sprintf( number, "%d", e->request_code );
|
|
XGetErrorDatabaseText( d, "XRequest", number, "<unknown>",
|
|
req, sizeof( req ) );
|
|
return 0;
|
|
}
|
|
|
|
int orientation2angle( CDSC_ORIENTATION_ENUM orientation )
|
|
{
|
|
Q_ASSERT( orientation != CDSC_ORIENT_UNKNOWN );
|
|
|
|
int angle = 0;
|
|
|
|
switch( orientation )
|
|
{
|
|
case CDSC_ORIENT_UNKNOWN: break; // Catched by Q_ASSERT
|
|
case CDSC_PORTRAIT: angle = 0; break;
|
|
case CDSC_LANDSCAPE: angle = 90; break;
|
|
case CDSC_UPSIDEDOWN: angle = 180; break;
|
|
case CDSC_SEASCAPE: angle = 270; break;
|
|
}
|
|
|
|
return angle;
|
|
}
|
|
|
|
TQCString palette2String( Configuration::EnumPalette::type palette )
|
|
{
|
|
TQCString str;
|
|
|
|
switch( palette )
|
|
{
|
|
case Configuration::EnumPalette::Color: str = "Color"; break;
|
|
case Configuration::EnumPalette::Grayscale: str = "Grayscale"; break;
|
|
case Configuration::EnumPalette::Monochrome: str = "Monochrome"; break;
|
|
default: kdWarning( 4500 ) << "palette2String(): unkown palette" << endl;
|
|
str = "Color";
|
|
}
|
|
|
|
return str;
|
|
}
|
|
|
|
|
|
KPSWidget::KPSWidget( TQWidget* parent, const char* name ) :
|
|
TQWidget ( parent, name ),
|
|
_gsWindow ( None ),
|
|
_usePipe ( false ),
|
|
_doubleBuffer ( false ),
|
|
_ghostscriptDirty ( false ),
|
|
_orientation ( CDSC_PORTRAIT ),
|
|
_magnification ( 1 ),
|
|
_palette ( Configuration::EnumPalette::Color ),
|
|
_widgetDirty ( true ),
|
|
_process ( 0 ),
|
|
_buffer ( 0 ),
|
|
_stdinReady ( false ),
|
|
_interpreterBusy ( false ),
|
|
_interpreterReady ( false )
|
|
{
|
|
XSetErrorHandler( handler );
|
|
|
|
// Create the Atoms used to communicate with Ghostscript.
|
|
const char* const atomNames[] = { "GHOSTVIEW", "GHOSTVIEW_COLORS",
|
|
"NEXT", "PAGE", "DONE" };
|
|
XInternAtoms( x11Display(), const_cast<char**>( atomNames ),
|
|
5, false, _atoms );
|
|
|
|
// readSettings() TODO
|
|
}
|
|
|
|
KPSWidget::~KPSWidget()
|
|
{
|
|
if ( _buffer ) operator delete( _buffer );
|
|
stopInterpreter();
|
|
}
|
|
|
|
bool KPSWidget::isInterpreterReady() const
|
|
{
|
|
return isInterpreterRunning() && _interpreterReady;
|
|
}
|
|
|
|
bool KPSWidget::isInterpreterBusy() const
|
|
{
|
|
return _interpreterBusy;
|
|
}
|
|
|
|
bool KPSWidget::isInterpreterRunning() const
|
|
{
|
|
return ( _process && _process->isRunning() );
|
|
}
|
|
|
|
bool KPSWidget::nextPage()
|
|
{
|
|
if( !isInterpreterReady() )
|
|
return false;
|
|
|
|
if( _gsWindow == None ) {
|
|
kdDebug(4500) << "communication window unknown!" << endl;
|
|
return false;
|
|
}
|
|
|
|
_interpreterReady = false;
|
|
_interpreterBusy = true;
|
|
setCursor( waitCursor );
|
|
|
|
XEvent e;
|
|
e.xclient.type = ClientMessage;
|
|
e.xclient.display = x11Display();
|
|
e.xclient.window = _gsWindow;
|
|
e.xclient.message_type = _atoms[NEXT];
|
|
e.xclient.format = 32;
|
|
|
|
XSendEvent( x11Display(), _gsWindow, false, 0, &e );
|
|
XFlush( x11Display() );
|
|
return true;
|
|
}
|
|
|
|
|
|
void KPSWidget::clear()
|
|
{
|
|
//_backgroundPixmap.fill();
|
|
}
|
|
|
|
|
|
bool KPSWidget::sendPS( FILE* fp, unsigned int begin, unsigned int end )
|
|
{
|
|
kdDebug(4500) << "KPSWidget::sendPS" << endl;
|
|
|
|
if( !isInterpreterRunning() )
|
|
return false;
|
|
|
|
// Create a new record to add to the queue.
|
|
_inputQueue.push( Record( fp, begin, end - begin ) );
|
|
|
|
// Start processing the queue.
|
|
if( _stdinReady )
|
|
gs_input(_process);
|
|
|
|
return true;
|
|
}
|
|
|
|
void KPSWidget::setGhostscriptPath( const TQString& path )
|
|
{
|
|
kdDebug() << "KPSWidget::setGhostscriptPath( " << path << " )" << endl;
|
|
if( _ghostscriptPath != path )
|
|
{
|
|
_ghostscriptPath = path;
|
|
stopInterpreter();
|
|
_ghostscriptDirty = true;
|
|
}
|
|
}
|
|
|
|
void KPSWidget::setGhostscriptArguments( const TQStringList& arguments )
|
|
{
|
|
if( _ghostscriptArguments != arguments )
|
|
{
|
|
_ghostscriptArguments = arguments;
|
|
stopInterpreter();
|
|
_ghostscriptDirty = true;
|
|
}
|
|
}
|
|
|
|
void KPSWidget::setFileName( const TQString& fileName, bool usePipe )
|
|
{
|
|
if(( _fileName != fileName ) || (_usePipe != usePipe))
|
|
{
|
|
_usePipe = usePipe;
|
|
_fileName = fileName;
|
|
stopInterpreter();
|
|
_ghostscriptDirty = true;
|
|
}
|
|
}
|
|
|
|
void KPSWidget::setOrientation( CDSC_ORIENTATION_ENUM orientation )
|
|
{
|
|
if( _orientation != orientation )
|
|
{
|
|
_orientation = orientation;
|
|
stopInterpreter();
|
|
_widgetDirty = true;
|
|
}
|
|
}
|
|
|
|
void KPSWidget::setBoundingBox( const KDSCBBOX& boundingBox )
|
|
{
|
|
if( _boundingBox != boundingBox )
|
|
{
|
|
_boundingBox = boundingBox;
|
|
stopInterpreter();
|
|
_widgetDirty = true;
|
|
}
|
|
}
|
|
|
|
void KPSWidget::setMagnification( double magnification )
|
|
{
|
|
if( kAbs( magnification - _magnification ) > 0.0001 )
|
|
{
|
|
_magnification = magnification;
|
|
stopInterpreter();
|
|
_widgetDirty = true;
|
|
}
|
|
}
|
|
|
|
void KPSWidget::setPalette( Configuration::EnumPalette::type palette )
|
|
{
|
|
if( _palette != palette )
|
|
{
|
|
_palette = palette;
|
|
stopInterpreter();
|
|
_widgetDirty = true;
|
|
}
|
|
}
|
|
|
|
void KPSWidget::setDoubleBuffering( bool db )
|
|
{
|
|
if( _doubleBuffer != db )
|
|
{
|
|
_doubleBuffer = db;
|
|
stopInterpreter();
|
|
_widgetDirty = true;
|
|
}
|
|
}
|
|
|
|
namespace {
|
|
/* Rounding up is better than normal rounding because it is better to have a pixel too many than one too little.
|
|
* If we have one too many, no one will notice. If we have one too little, gs complains.
|
|
*
|
|
* I have a file which isn't displayed (gs error) without this fix.
|
|
*/
|
|
inline int round_up( double x )
|
|
{
|
|
return static_cast<int>( ceil( x ) );
|
|
}
|
|
}
|
|
|
|
void KPSWidget::setupWidget()
|
|
{
|
|
if( !_widgetDirty )
|
|
return;
|
|
|
|
Q_ASSERT( orientation() != CDSC_ORIENT_UNKNOWN );
|
|
|
|
const float dpiX = _magnification * this->x11AppDpiX();
|
|
const float dpiY = _magnification * this->x11AppDpiY();
|
|
|
|
int newWidth = 0, newHeight = 0;
|
|
if( orientation() == CDSC_PORTRAIT || orientation() == CDSC_UPSIDEDOWN )
|
|
{
|
|
newWidth = round_up( boundingBox().width() * dpiX / 72.0 );
|
|
newHeight = round_up( boundingBox().height() * dpiY / 72.0 );
|
|
}
|
|
else
|
|
{
|
|
newWidth = round_up( boundingBox().height() * dpiX / 72.0 );
|
|
newHeight = round_up( boundingBox().width() * dpiY / 72.0 );
|
|
}
|
|
|
|
if( newWidth != width() || newHeight != height() )
|
|
{
|
|
setEraseColor( white );
|
|
setFixedSize( newWidth, newHeight );
|
|
kapp->processEvents();
|
|
|
|
_backgroundPixmap.resize( size() );
|
|
_backgroundPixmap.fill( white );
|
|
// The line below is needed to work around certain "features" of styles such as liquid
|
|
// see bug:61711 for more info (LPC, 20 Aug '03)
|
|
setBackgroundOrigin( TQWidget::WidgetOrigin );
|
|
setErasePixmap( _backgroundPixmap );
|
|
}
|
|
|
|
char data[512];
|
|
|
|
sprintf( data, "%ld %d %d %d %d %d %g %g",
|
|
( _doubleBuffer ? 0 : _backgroundPixmap.handle() ),
|
|
orientation2angle( orientation() ),
|
|
boundingBox().llx(), boundingBox().lly(),
|
|
boundingBox().urx(), boundingBox().ury(),
|
|
dpiX, dpiY );
|
|
XChangeProperty( x11Display(), winId(),
|
|
_atoms[GHOSTVIEW],
|
|
XA_STRING, 8, PropModeReplace,
|
|
(unsigned char*) data, strlen( data ) );
|
|
|
|
sprintf( data, "%s %d %d",
|
|
palette2String( _palette ).data(),
|
|
(int)BlackPixel( x11Display(), DefaultScreen( x11Display() ) ),
|
|
(int)WhitePixel( x11Display(), DefaultScreen( x11Display() ) ) );
|
|
XChangeProperty( x11Display(), winId(),
|
|
_atoms[GHOSTVIEW_COLORS],
|
|
XA_STRING, 8, PropModeReplace,
|
|
(unsigned char*) data, strlen( data ) );
|
|
|
|
// Make sure the properties are updated immediately.
|
|
XSync( x11Display(), false );
|
|
|
|
repaint();
|
|
|
|
_widgetDirty = false;
|
|
}
|
|
|
|
bool KPSWidget::startInterpreter()
|
|
{
|
|
setupWidget();
|
|
|
|
_process = new TDEProcess;
|
|
if ( _doubleBuffer ) _process->setEnvironment( "GHOSTVIEW", TQString( "%1 %2" ).arg( winId() ).arg( _backgroundPixmap.handle() ) );
|
|
else _process->setEnvironment( "GHOSTVIEW", TQString::number( winId() ) );
|
|
|
|
*_process << _ghostscriptPath.local8Bit();
|
|
*_process << _ghostscriptArguments;
|
|
|
|
if( _usePipe )
|
|
*_process <<
|
|
// The following two lines are their to ensure that we are allowed to read _fileName
|
|
"-dDELAYSAFER" << "-sInputFile="+_fileName << "-c" <<
|
|
"<< /PermitFileReading [ InputFile ] /PermitFileWriting [] /PermitFileControl [] >> setuserparams .locksafe" <<
|
|
"-";
|
|
else
|
|
*_process << _fileName << "-c" << "quit";
|
|
|
|
connect( _process, TQ_SIGNAL( processExited( TDEProcess* ) ),
|
|
this, TQ_SLOT( slotProcessExited( TDEProcess* ) ) );
|
|
connect( _process, TQ_SIGNAL( receivedStdout( TDEProcess*, char*, int ) ),
|
|
this, TQ_SLOT( gs_output( TDEProcess*, char*, int ) ) );
|
|
connect( _process, TQ_SIGNAL( receivedStderr( TDEProcess*, char*, int ) ),
|
|
this, TQ_SLOT( gs_output( TDEProcess*, char*, int ) ) );
|
|
connect( _process, TQ_SIGNAL( wroteStdin( TDEProcess*) ),
|
|
this, TQ_SLOT( gs_input( TDEProcess* ) ) );
|
|
|
|
kapp->flushX();
|
|
|
|
// Finally fire up the interpreter.
|
|
kdDebug(4500) << "KPSWidget: starting interpreter" << endl;
|
|
if( _process->start( TDEProcess::NotifyOnExit,
|
|
_usePipe ? TDEProcess::All : TDEProcess::AllOutput ) )
|
|
{
|
|
_interpreterBusy = true;
|
|
setCursor( waitCursor );
|
|
|
|
_stdinReady = true;
|
|
_interpreterReady = false;
|
|
_ghostscriptDirty = false;
|
|
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
KMessageBox::error( this,
|
|
i18n( "Could not start Ghostscript. This is most likely "
|
|
"caused by an incorrectly specified interpreter." ) );
|
|
return false;
|
|
}
|
|
}
|
|
|
|
void KPSWidget::stopInterpreter()
|
|
{
|
|
kdDebug(4500) << "KPSWidget::stopInterpreter()" << endl;
|
|
// if( !_interpreterBusy ) return;
|
|
|
|
if( isInterpreterRunning() )
|
|
_process->kill( SIGHUP );
|
|
|
|
_process = 0;
|
|
while ( !_inputQueue.empty() ) _inputQueue.pop();
|
|
|
|
_interpreterBusy = false;
|
|
unsetCursor();
|
|
}
|
|
|
|
void KPSWidget::interpreterFailed()
|
|
{
|
|
stopInterpreter();
|
|
}
|
|
|
|
void KPSWidget::slotProcessExited( TDEProcess* process )
|
|
{
|
|
kdDebug(4500) << "KPSWidget: process exited" << endl;
|
|
|
|
if ( process == _process )
|
|
{
|
|
kdDebug( 4500 ) << "KPSWidget::slotProcessExited(): looks like it was not a clean exit." << endl;
|
|
if ( process->normalExit() ) {
|
|
emit ghostscriptError( TQString( i18n( "Exited with error code %1." ).arg( process->exitStatus() ) ) );
|
|
} else {
|
|
emit ghostscriptError( TQString( i18n( "Process killed or crashed." ) ) );
|
|
}
|
|
_process = 0;
|
|
stopInterpreter();
|
|
unsetCursor();
|
|
}
|
|
}
|
|
|
|
void KPSWidget::gs_output( TDEProcess*, char* buffer, int len )
|
|
{
|
|
emit output( buffer, len );
|
|
}
|
|
|
|
void KPSWidget::gs_input( TDEProcess* process )
|
|
{
|
|
kdDebug(4500) << "KPSWidget::gs_input" << endl;
|
|
|
|
if (process != _process)
|
|
{
|
|
kdDebug(4500) << "KPSWidget::gs_input(): process != _process" << endl;
|
|
return;
|
|
}
|
|
_stdinReady = true;
|
|
|
|
while( ! _inputQueue.empty() && _inputQueue.front().len == 0 ) _inputQueue.pop();
|
|
if( _inputQueue.empty() ) {
|
|
_interpreterReady = true;
|
|
return;
|
|
}
|
|
|
|
Record& current = _inputQueue.front();
|
|
|
|
if ( fseek( current.fp, current.begin, SEEK_SET ) ) {
|
|
kdDebug(4500) << "KPSWidget::gs_input(): seek failed!" << endl;
|
|
interpreterFailed();
|
|
return;
|
|
}
|
|
Q_ASSERT( current.len > 0 );
|
|
|
|
const unsigned buffer_size = 4096;
|
|
if ( !_buffer ) _buffer = static_cast<char*>( operator new( buffer_size ) );
|
|
const int bytesRead = fread( _buffer, sizeof (char),
|
|
TQMIN( buffer_size, current.len ),
|
|
current.fp );
|
|
if( bytesRead > 0 )
|
|
{
|
|
current.begin += bytesRead;
|
|
current.len -= bytesRead;
|
|
if( process && process->writeStdin( _buffer, bytesRead ) )
|
|
_stdinReady = false;
|
|
else
|
|
interpreterFailed();
|
|
}
|
|
else
|
|
interpreterFailed();
|
|
}
|
|
|
|
void KPSWidget::readSettings()
|
|
{
|
|
setGhostscriptPath( Configuration::interpreter() );
|
|
|
|
TQStringList arguments;
|
|
|
|
if( Configuration::antialiasing() )
|
|
arguments = TQStringList::split( " ", Configuration::antialiasingArguments() );
|
|
else
|
|
arguments = TQStringList::split( " ", Configuration::nonAntialiasingArguments() );
|
|
|
|
if( !Configuration::platformFonts() )
|
|
arguments << "-dNOPLATFONTS";
|
|
|
|
arguments << "-dNOPAUSE" << "-dQUIET" << "-dSAFER" << "-dPARANOIDSAFER";
|
|
|
|
setGhostscriptArguments( arguments );
|
|
|
|
setPalette( static_cast<Configuration::EnumPalette::type>( Configuration::palette() ) );
|
|
}
|
|
|
|
bool KPSWidget::x11Event( XEvent* e )
|
|
{
|
|
if( e->type == ClientMessage )
|
|
{
|
|
_gsWindow = e->xclient.data.l[0];
|
|
|
|
if( e->xclient.message_type == _atoms[PAGE] )
|
|
{
|
|
kdDebug(4500) << "KPSWidget: received PAGE" << endl;
|
|
_interpreterBusy = false;
|
|
unsetCursor();
|
|
emit newPageImage( _backgroundPixmap );
|
|
if ( _doubleBuffer ) setErasePixmap( _backgroundPixmap );
|
|
return true;
|
|
}
|
|
else if( e->xclient.message_type == _atoms[DONE] )
|
|
{
|
|
kdDebug(4500) << "KPSWidget: received DONE" << endl;
|
|
stopInterpreter();
|
|
return true;
|
|
}
|
|
}
|
|
return TQWidget::x11Event( e );
|
|
}
|
|
|
|
#include "kpswidget.moc"
|