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tdegraphics/kghostview/kgv_miniwidget.cpp

574 lines
15 KiB

/**
* Copyright (C) 1997-2003 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 <math.h>
#include <tqlistbox.h>
#include <kapplication.h>
#include <kconfig.h>
#include <kdebug.h>
#include <kinstance.h>
#include <tdeversion.h>
#include <klocale.h>
#include <kmessagebox.h>
// KLineEditDlg is depricated as of 3.2. use KInputDialog instead
#if TDE_VERSION >= KDE_MAKE_VERSION(3,1,90)
#include <kinputdialog.h>
#else
#include <tqvalidator.h>
#include <tqwidget.h>
#include <klineeditdlg.h>
#endif
#include <config.h>
#include <stdlib.h>
#include "infodialog.h"
#include "marklist.h"
#include "kgvdocument.h"
#include "kgv_view.h"
#include "version.h"
#include "scrollbox.h"
#include "kgv_miniwidget.h"
#include "kpswidget.h"
using namespace KGV;
KGVMiniWidget::KGVMiniWidget( KGVPart* part, const char* name ) :
TQObject( part, name ),
_document( 0 ),
_part( part ),
_psWidget( 0 ),
_usePageLabels( true ),
_visiblePage( -1 )
{
KLocale locale( "kghostview" );
_fallBackPageMedia = pageSizeToString(
static_cast< TQPrinter::PageSize >( locale.pageSize() ) );
_thumbnailService = new ThumbnailService( this );
connect( this, TQT_SIGNAL( newPageShown( int ) ),
TQT_SLOT( updateStatusBarText( int ) ) );
}
void KGVMiniWidget::setDocument( KGVDocument* document )
{
_document = document;
if( _document )
connect( _document, TQT_SIGNAL( completed() ),
TQT_SLOT( slotDocumentOpened() ) );
}
TQString KGVMiniWidget::pageSizeToString( TQPrinter::PageSize pageSize )
{
switch( pageSize )
{
case TQPrinter::A3: return "A3";
case TQPrinter::A4: return "A4";
case TQPrinter::A5: return "A5";
case TQPrinter::B4: return "B4";
case TQPrinter::Ledger: return "Ledger";
case TQPrinter::Legal: return "Legal";
case TQPrinter::Letter: return "Letter";
default: return "Unknown";
}
}
void KGVMiniWidget::reset()
{
/*
if( _psWidget )
_psWidget->disableInterpreter();
*/
// return to document defaults
_options.reset();
emit setStatusBarText( "" );
}
void KGVMiniWidget::setPSWidget( KPSWidget* psWidget )
{
_psWidget = psWidget;
// setMagnification( _magnification );
connect( _psWidget, TQT_SIGNAL( newPageImage( TQPixmap ) ),
this, TQT_SLOT( sendPage() ) );
}
void KGVMiniWidget::goToPage()
{
#if TDE_VERSION >= KDE_MAKE_VERSION(3,1,90)
int num;
bool ok = false;
num = KInputDialog::getInteger(i18n("Go to Page"), i18n("Page:"), 1,
1, dsc()->page_count(), 1, 10, &ok, _part->widget());
if (ok) goToPage( num-1 );
#else
TQString num;
bool b = false;
num = KLineEditDlg::getText(i18n("Go to Page"), i18n("Page:"), TQString(), &b, _part->widget(), new TQIntValidator(1, dsc()->page_count(), this));
if (b) goToPage( num.toInt() - 1 );
#endif
}
void KGVMiniWidget::info()
{
if( !document()->isOpen() )
return;
InfoDialog* infoDialog = new InfoDialog( _part->widget(), "info", true );
infoDialog->setup( _part->url().prettyURL(),
dsc()->dsc_title(), dsc()->dsc_date() );
infoDialog->exec();
delete infoDialog;
}
void KGVMiniWidget::goToPage( int page )
{
if( _options.page() != page ) {
_options.setPage( page );
showPage( _options.page() );
}
}
void KGVMiniWidget::zoomIn()
{
if ( _options.zoomIn() ) showPage( _options.page() );
}
void KGVMiniWidget::zoomOut()
{
if ( _options.zoomOut() ) showPage( _options.page() );
}
bool KGVMiniWidget::atMaxZoom() const
{
return !_options.canZoomIn();
}
bool KGVMiniWidget::atMinZoom() const
{
return !_options.canZoomOut();
}
void KGVMiniWidget::fitWidth( unsigned int width )
{
if ( (orientation() == CDSC_LANDSCAPE) || (orientation() == CDSC_SEASCAPE) )
setMagnification( ( (double)width / TQPaintDevice::x11AppDpiY()) /
( (double)boundingBox().height() / 72) );
else // default
setMagnification( ( (double)width / TQPaintDevice::x11AppDpiX() ) /
( (double)boundingBox().width() / 72) );
}
void KGVMiniWidget::fitHeight( unsigned int height )
{
if ( (orientation() == CDSC_LANDSCAPE) || (orientation() == CDSC_SEASCAPE) )
setMagnification( ( (double)height / TQPaintDevice::x11AppDpiY()) /
( (double)boundingBox().width() / 72) );
else //default
setMagnification( ( (double)height / TQPaintDevice::x11AppDpiY()) /
( (double)boundingBox().height() / 72) );
}
void KGVMiniWidget::fitWidthHeight( unsigned int w, unsigned int h )
{
double magnification = std::min<double>(
( ( double )h / TQPaintDevice::x11AppDpiY() ) /
( ( double )boundingBox().height() / 72.0 ),
( ( double )w / TQPaintDevice::x11AppDpiX() ) /
( ( double )boundingBox().width() / 72.0 ) );
setMagnification( magnification );
}
void KGVMiniWidget::firstPage()
{
goToPage( 0 );
}
void KGVMiniWidget::lastPage()
{
if ( !dsc() ) return;
goToPage( dsc()->page_count() - 1 );
}
bool KGVMiniWidget::prevPage()
{
if ( !dsc() ) return false;
int new_page = 0;
if( dsc()->isStructured() ) {
new_page = _options.page() - 1;
if( new_page < 0 )
return false;
}
goToPage( new_page );
return true;
}
bool KGVMiniWidget::nextPage()
{
if ( !dsc() ) return false;
int new_page = 0;
if( dsc()->isStructured() ) {
new_page = _options.page() + 1;
if( (unsigned int)new_page >= dsc()->page_count() )
return false;
}
goToPage( new_page );
return true;
}
void KGVMiniWidget::redisplay ()
{
if( !document()->psFile() )
return;
_psWidget->stopInterpreter();
showPage( _options.page() );
}
void KGVMiniWidget::restoreOverrideOrientation()
{
_options.restoreOverrideOrientation();
showPage( _options.page() );
}
void KGVMiniWidget::setOverrideOrientation( CDSC_ORIENTATION_ENUM orientation )
{
_options.setOverrideOrientation( orientation );
showPage( _options.page() );
}
CDSC_ORIENTATION_ENUM KGVMiniWidget::orientation() const
{
if( _options.overrideOrientation() != CDSC_ORIENT_UNKNOWN )
return _options.overrideOrientation();
else if( dsc()->page_orientation() != CDSC_ORIENT_UNKNOWN )
return static_cast< CDSC_ORIENTATION_ENUM >( dsc()->page_orientation());
else if( dsc()->bbox().get() != 0
&& dsc()->bbox()->width() > dsc()->bbox()->height() )
return CDSC_LANDSCAPE;
else
return CDSC_PORTRAIT;
}
CDSC_ORIENTATION_ENUM KGVMiniWidget::orientation( int pagenumber ) const
{
if ( !dsc() || unsigned( pagenumber ) >= dsc()->page_count() ) {
return orientation();
}
if( _options.overrideOrientation() != CDSC_ORIENT_UNKNOWN ) {
return _options.overrideOrientation();
}
if( dsc()->page()[ pagenumber ].orientation != CDSC_ORIENT_UNKNOWN ) {
return static_cast< CDSC_ORIENTATION_ENUM >( dsc()->page()[ pagenumber ].orientation );
}
if( dsc()->page_orientation() != CDSC_ORIENT_UNKNOWN ) {
return static_cast< CDSC_ORIENTATION_ENUM >( dsc()->page_orientation());
}
if( !dsc()->epsf() ) {
return CDSC_PORTRAIT;
}
if( dsc()->bbox().get() != 0
&& dsc()->bbox()->width() > dsc()->bbox()->height() ) {
return CDSC_LANDSCAPE;
}
return CDSC_PORTRAIT;
}
void KGVMiniWidget::restoreOverridePageMedia()
{
_options.restoreOverridePageMedia();
redisplay();
showPage( _options.page() );
}
void KGVMiniWidget::setOverridePageMedia( const TQString& mediaName )
{
_options.setOverridePageMedia( mediaName );
showPage( _options.page() );
}
TQString KGVMiniWidget::pageMedia() const
{
if( !_options.overridePageMedia().isNull() )
return _options.overridePageMedia();
else if( dsc()->page_media() != 0 )
return TQString( dsc()->page_media()->name );
else if( dsc()->bbox().get() != 0 )
return TQString( "BoundingBox" );
else
return _fallBackPageMedia;
}
TQString KGVMiniWidget::pageMedia( int pagenumber ) const
{
kdDebug( 4500 ) << "KGVMiniWidget::pageMedia( " << pagenumber << " )" << endl;
if ( !dsc() ) return pageMedia();
if ( unsigned( pagenumber ) >= dsc()->page_count() ) return pageMedia();
if( !_options.overridePageMedia().isNull() )
return _options.overridePageMedia();
else if( dsc()->page()[ pagenumber ].media != 0 )
return TQString( dsc()->page()[ pagenumber ].media->name );
else if( dsc()->page_media() != 0 )
return TQString( dsc()->page_media()->name );
else if( dsc()->bbox().get() != 0 )
return TQString( "BoundingBox" );
else
return _fallBackPageMedia;
}
KDSCBBOX KGVMiniWidget::boundingBox() const
{
TQString currentMedia = pageMedia();
if( currentMedia == "BoundingBox" )
return KDSCBBOX( *dsc()->bbox().get() );
else {
TQSize size = document()->computePageSize( currentMedia );
return KDSCBBOX( 0, 0, size.width(), size.height() );
}
}
KDSCBBOX KGVMiniWidget::boundingBox( int pageNo ) const
{
TQString currentMedia = pageMedia( pageNo );
if( currentMedia == "BoundingBox" )
return KDSCBBOX( *dsc()->bbox().get() );
else {
TQSize size = document()->computePageSize( currentMedia );
return KDSCBBOX( 0, 0, size.width(), size.height() );
}
}
bool KGVMiniWidget::atFirstPage() const
{
return ( _options.page() == 0 );
}
bool KGVMiniWidget::atLastPage() const
{
return ( _options.page() == static_cast<int>( dsc()->page_count() ) - 1 );
}
void KGVMiniWidget::showPage( int pagenumber )
{
if( !document()->isOpen() )
return;
kdDebug(4500) << "KGVMiniWidget::showPage( " << pagenumber << " )" << endl;
TQT_TQWIDGET( _psWidget->parent() )->show();
_psWidget->setFileName(_document->fileName(), dsc()->isStructured() );
_psWidget->clear();
if( dsc()->isStructured() )
{
// Coerce page number to fall in range
if( ( unsigned int)pagenumber >= dsc()->page_count() )
pagenumber = dsc()->page_count() - 1;
if( pagenumber < 0 )
pagenumber = 0;
_options.setPage( pagenumber );
_psWidget->setOrientation( orientation( _options.page() ) );
_psWidget->setBoundingBox( boundingBox( _options.page() ) );
_psWidget->setMagnification( _options.magnification() );
if( !_psWidget->isInterpreterRunning() )
{
// Start interpreter, send preamble and send the current page.
if( _psWidget->startInterpreter() )
{
_psWidget->sendPS( psFile(), dsc()->beginprolog(),
dsc()->endprolog() );
_psWidget->sendPS( psFile(), dsc()->beginsetup(),
dsc()->endsetup() );
_psWidget->sendPS( psFile(), dsc()->page()[ _options.page() ].begin,
dsc()->page()[ _options.page() ].end );
_visiblePage = _options.page();
}
}
else
sendPage();
}
else
{
_psWidget->setOrientation( orientation() );
_psWidget->setBoundingBox( boundingBox() );
_psWidget->setMagnification( _options.magnification() );
if( !_psWidget->isInterpreterRunning() )
{
// This is not a structured document -- start interpreter
_psWidget->startInterpreter();
if( !dsc() )
_psWidget->stopInterpreter();
}
else if( _psWidget->isInterpreterReady() )
_psWidget->nextPage();
else
{
/*
KNotifyClient::userEvent
(i18n("KGhostview cannot load the document, \"%1\".\n"
"It appears to be broken.").arg( _fileName ),
KNotifyClient::Messagebox);
_psWidget->disableInterpreter();
_psFile=0;
//TODO: More to do to turn off display?
*/
return;
}
}
// Do this after ajusting pagenumber above
_thumbnailService->cancelRequests( -1 , TQT_TQOBJECT(_part->scrollBox()), TQT_SLOT( setThumbnail( TQPixmap ) ) );
_thumbnailService->delayedGetThumbnail( pagenumber, TQT_TQOBJECT(_part->scrollBox()), TQT_SLOT( setThumbnail( TQPixmap ) ), true );
emit newPageShown( pagenumber );
}
void KGVMiniWidget::sendPage()
{
// Send the page to the interpreter.
if( !_psWidget->isInterpreterBusy() && _visiblePage != _options.page() )
{
// Interpreter ready - Fire off next page
_psWidget->clear();
_psWidget->nextPage();
_psWidget->sendPS( psFile(), dsc()->page()[ _options.page() ].begin,
dsc()->page()[ _options.page() ].end );
_visiblePage = _options.page();
}
}
void KGVMiniWidget::updateStatusBarText( int pageNumber )
{
if( !dsc() )
return;
if( dsc()->isStructured() )
{
TQString text;
if( pageNumber == -1 )
text = i18n( "Page 1" );
else
if( !_usePageLabels || document()->format() == KGVDocument::PDF )
text = i18n( "Page %1 of %2" )
.arg( pageNumber + 1 )
.arg( dsc()->page_count() );
else
text = i18n( "Page %1 (%2 of %3)" )
.arg( dsc()->page()[ _options.page() ].label )
.arg( pageNumber + 1 )
.arg( dsc()->page_count() );
emit setStatusBarText( text );
}
}
void KGVMiniWidget::buildTOC()
{
if( !dsc() )
return;
// Build table of contents
// Well, that's what it used to be called !!
int last_page = 0;
MarkList* marklist = _part->markList();
if( dsc()->isStructured() ) {
if( _usePageLabels )
for( unsigned i = 0; i < dsc()->page_count(); ++i ) {
unsigned j = i;
if( dsc()->page_order() == CDSC_DESCEND )
j = ( dsc()->page_count() - 1 ) - i;
last_page = atoi( dsc()->page()[j].label );
}
// finally set marked list
TQString s;
for( unsigned i = 0; i < dsc()->page_count(); ++i ) {
const char * label = dsc()->page()[ i ].label;
TQString tip = TQString::fromLocal8Bit( label ? label : "" );
if( !_usePageLabels )
s.setNum( i + 1 );
else
s = tip;
marklist->insertItem( s, i, tip );
}
}
else {
marklist->insertItem( TQString::fromLatin1( "1" ), 0 );
}
}
void KGVMiniWidget::setMagnification( double magnification )
{
if ( magnification != _options.magnification() ) {
_options.setMagnification( magnification );
showPage( _options.page() );
}
}
void KGVMiniWidget::enablePageLabels( bool b )
{
if( _usePageLabels != b )
{
_usePageLabels = b;
updateStatusBarText( _options.page() );
buildTOC();
}
}
void KGVMiniWidget::slotDocumentOpened()
{
buildTOC();
showPage( _options.page() );
}
void KGVMiniWidget::setDisplayOptions( const DisplayOptions& newOptions )
{
_options = newOptions;
}
#include "kgv_miniwidget.moc"
// vim:sw=4:sts=4:ts=8:sta:tw=78:noet