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qgscomposer.cpp
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qgscomposer.cpp
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/***************************************************************************
qgscomposer.cpp - description
-------------------
begin : January 2005
copyright : (C) 2005 by Radim Blazek
email : blazek@itc.it
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#include "qgscomposer.h"
#include "qgisapp.h"
#include "qgsapplication.h"
#include "qgscomposerview.h"
#include "qgscomposition.h"
#include "qgscompositionwidget.h"
#include "qgscomposerlabel.h"
#include "qgscomposerlabelwidget.h"
#include "qgscomposerlegend.h"
#include "qgscomposerlegendwidget.h"
#include "qgscomposermap.h"
#include "qgscomposermapwidget.h"
#include "qgscomposerpicture.h"
#include "qgscomposerpicturewidget.h"
#include "qgscomposerscalebar.h"
#include "qgscomposerscalebarwidget.h"
#include "qgsexception.h"
#include "qgsproject.h"
#include "qgsmapcanvas.h"
#include "qgsmessageviewer.h"
#include "qgscontexthelp.h"
#include "qgscursors.h"
#include <QCloseEvent>
#include <QDesktopWidget>
#include <QFileDialog>
#include <QFileInfo>
#include <QMatrix>
#include <QMenuBar>
#include <QMessageBox>
#include <QPainter>
#include <QPrinter>
#include <QPrintDialog>
#include <QSettings>
#include <QIcon>
#include <QPixmap>
#if QT_VERSION < 0x040300
#include <Q3Picture>
#else
#include <QSvgGenerator>
#endif
#include <QToolBar>
#include <QImageWriter>
#include <QCheckBox>
#include <QSizeGrip>
#include "qgslogger.h"
QgsComposer::QgsComposer( QgisApp *qgis ): QMainWindow()
{
setupUi( this );
setupTheme();
QString myIconPath = QgsApplication::activeThemePath();
// Actions defined in qgscomposerbase.ui:
// mActionAddNewMap
// mActionAddNewLegend
// mActionAddNewLabel
// mActionAddNewScalebar
// mActionAddImage
// mActionSelectMoveItem
QAction* moveItemContentAction = new QAction( QIcon( QPixmap( myIconPath + "mActionMoveItemContent.png" ) ),
tr( "Move Content" ), 0 );
moveItemContentAction->setToolTip( tr( "Move item content" ) );
moveItemContentAction->setCheckable( true );
connect( moveItemContentAction, SIGNAL( triggered() ), this, SLOT( moveItemContent() ) );
toolBar->addAction( moveItemContentAction );
//toolBar->addAction(QIcon(QPixmap(myIconPath+"mActionMoveItemContent.png")), tr("Move Item content"), this, SLOT(moveItemContent()));
QAction* groupItemsAction = toolBar->addAction( QIcon( QPixmap( myIconPath + "mActionGroupItems.png" ) ),
tr( "&Group" ), this, SLOT( groupItems() ) );
groupItemsAction->setToolTip( tr( "Group items" ) );
QAction* ungroupItemsAction = toolBar->addAction( QIcon( QPixmap( myIconPath + "mActionUngroupItems.png" ) ),
tr( "&Ungroup" ), this, SLOT( ungroupItems() ) );
ungroupItemsAction->setToolTip( tr( "Ungroup items" ) );
QAction* raiseItemsAction = toolBar->addAction( QIcon( QPixmap( myIconPath + "mActionRaiseItems.png" ) ),
tr( "Raise" ), this, SLOT( raiseSelectedItems() ) );
raiseItemsAction->setToolTip( tr( "Raise selected items" ) );
QAction* lowerItemsAction = toolBar->addAction( QIcon( QPixmap( myIconPath + "mActionLowerItems.png" ) ),
tr( "Lower" ), this, SLOT( lowerSelectedItems() ) );
lowerItemsAction->setToolTip( tr( "Lower selected items" ) );
QAction* moveItemsToTopAction = toolBar->addAction( QIcon( QPixmap( myIconPath + "mActionMoveItemsToTop.png" ) ),
tr( "Bring to Front" ), this, SLOT( moveSelectedItemsToTop() ) );
moveItemsToTopAction->setToolTip( tr( "Move selected items to top" ) );
QAction* moveItemsToBottomAction = toolBar->addAction( QIcon( QPixmap( myIconPath + "mActionMoveItemsToBottom.png" ) ),
tr( "Send to Back" ), this, SLOT( moveSelectedItemsToBottom() ) );
moveItemsToBottomAction->setToolTip( tr( "Move selected items to bottom" ) );
QActionGroup* toggleActionGroup = new QActionGroup( this );
toggleActionGroup->addAction( moveItemContentAction );
toggleActionGroup->addAction( mActionAddNewMap );
toggleActionGroup->addAction( mActionAddNewLabel );
toggleActionGroup->addAction( mActionAddNewLegend );
toggleActionGroup->addAction( mActionAddNewScalebar );
toggleActionGroup->addAction( mActionAddImage );
toggleActionGroup->addAction( mActionSelectMoveItem );
toggleActionGroup->setExclusive( true );
setWindowTitle( tr( "QGIS - print composer" ) );
// Template save and load is not yet implemented, so disable those actions
mActionOpenTemplate->setEnabled( false );
mActionSaveTemplateAs->setEnabled( false );
mActionAddNewMap->setCheckable( true );
mActionAddNewLabel->setCheckable( true );
mActionAddNewLegend->setCheckable( true );
mActionSelectMoveItem->setCheckable( true );
mActionAddNewScalebar->setCheckable( true );
mActionAddImage->setCheckable( true );
#ifdef Q_WS_MAC
QMenu *appMenu = menuBar()->addMenu( tr( "QGIS" ) );
appMenu->addAction( QgisApp::instance()->actionAbout() );
appMenu->addAction( QgisApp::instance()->actionOptions() );
QMenu *fileMenu = menuBar()->addMenu( tr( "File" ) );
fileMenu->addAction( mActionOpenTemplate );
fileMenu->addSeparator();
QAction *closeAction = fileMenu->addAction( tr( "Close" ), this, SLOT( close() ), tr( "Ctrl+W" ) );
fileMenu->addAction( mActionSaveTemplateAs );
fileMenu->addAction( mActionExportAsImage );
fileMenu->addAction( mActionExportAsSVG );
fileMenu->addSeparator();
fileMenu->addAction( mActionPrint );
QMenu *editMenu = menuBar()->addMenu( tr( "Edit" ) );
QAction *undoAction = editMenu->addAction( tr( "&Undo" ), this, SLOT( undo() ), tr( "Ctrl+Z" ) );
undoAction->setEnabled( false );
editMenu->addSeparator();
QAction *cutAction = editMenu->addAction( tr( "Cu&t" ), this, SLOT( cut() ), tr( "Ctrl+X" ) );
cutAction->setEnabled( false );
QAction *copyAction = editMenu->addAction( tr( "&Copy" ), this, SLOT( copy() ), tr( "Ctrl+C" ) );
copyAction->setEnabled( false );
QAction *pasteAction = editMenu->addAction( tr( "&Paste" ), this, SLOT( paste() ), tr( "Ctrl+V" ) );
pasteAction->setEnabled( false );
QAction *deleteAction = editMenu->addAction( tr( "Delete" ) );
deleteAction->setEnabled( false );
QMenu *viewMenu = menuBar()->addMenu( tr( "View" ) );
viewMenu->addAction( mActionZoomIn );
viewMenu->addAction( mActionZoomOut );
viewMenu->addAction( mActionZoomAll );
viewMenu->addSeparator();
viewMenu->addAction( mActionRefreshView );
QMenu *layoutMenu = menuBar()->addMenu( tr( "Layout" ) );
layoutMenu->addAction( mActionAddNewMap );
layoutMenu->addAction( mActionAddNewLabel );
layoutMenu->addAction( mActionAddNewScalebar );
layoutMenu->addAction( mActionAddNewLegend );
layoutMenu->addAction( mActionAddImage );
layoutMenu->addAction( mActionSelectMoveItem );
layoutMenu->addAction( moveItemContentAction );
layoutMenu->addSeparator();
layoutMenu->addAction( groupItemsAction );
layoutMenu->addAction( ungroupItemsAction );
layoutMenu->addAction( raiseItemsAction );
layoutMenu->addAction( lowerItemsAction );
layoutMenu->addAction( moveItemsToTopAction );
layoutMenu->addAction( moveItemsToBottomAction );
#ifndef Q_WS_MAC64 /* assertion failure in NSMenuItem setSubmenu (Qt 4.5.0-snapshot-20080830) */
menuBar()->addMenu( QgisApp::instance()->windowMenu() );
menuBar()->addMenu( QgisApp::instance()->helpMenu() );
#endif
// Create action to select this window and add it to Window menu
mWindowAction = new QAction( windowTitle(), this );
connect( mWindowAction, SIGNAL( triggered() ), this, SLOT( activate() ) );
#endif
mQgis = qgis;
mFirstTime = true;
QgsDebugMsg( "entered." );
setMouseTracking( true );
//mSplitter->setMouseTracking(true);
mViewFrame->setMouseTracking( true );
//create composer view
mView = new QgsComposerView( mViewFrame );
connectSlots();
mComposition = new QgsComposition( mQgis->mapCanvas()->mapRenderer() );
mView->setComposition( mComposition );
QgsCompositionWidget* compositionWidget = new QgsCompositionWidget( mCompositionOptionsFrame, mComposition );
compositionWidget->show();
mCompositionOptionsLayout = new QGridLayout( mCompositionOptionsFrame );
mCompositionOptionsLayout->setMargin( 0 );
mCompositionOptionsLayout->addWidget( compositionWidget );
mPrinter = 0;
QGridLayout *l = new QGridLayout( mViewFrame );
l->setMargin( 0 );
l->addWidget( mView, 0, 0 );
mCompositionNameComboBox->insertItem( 0, tr( "Map 1" ) );
//mComposition = new QgsComposition( this, 1 );
//mComposition->setActive ( true );
// Create size grip (needed by Mac OS X for QMainWindow if QStatusBar is not visible)
mSizeGrip = new QSizeGrip( this );
mSizeGrip->resize( mSizeGrip->sizeHint() );
mSizeGrip->move( rect().bottomRight() - mSizeGrip->rect().bottomRight() );
restoreWindowState();
selectItem(); // Set selection tool
mView->setFocus();
//connect with signals from QgsProject to read/write project files
if ( QgsProject::instance() )
{
connect( QgsProject::instance(), SIGNAL( readProject( const QDomDocument& ) ), this, SLOT( readXML( const QDomDocument& ) ) );
connect( QgsProject::instance(), SIGNAL( writeProject( QDomDocument& ) ), this, SLOT( writeXML( QDomDocument& ) ) );
}
}
QgsComposer::~QgsComposer()
{
}
void QgsComposer::setupTheme()
{
//now set all the icons - getThemeIcon will fall back to default theme if its
//missing from active theme
mActionOpenTemplate->setIcon( QgisApp::getThemeIcon( "/mActionFileOpen.png" ) );
mActionSaveTemplateAs->setIcon( QgisApp::getThemeIcon( "/mActionFileSaveAs.png" ) );
mActionExportAsImage->setIcon( QgisApp::getThemeIcon( "/mActionExportMapServer.png" ) );
mActionExportAsSVG->setIcon( QgisApp::getThemeIcon( "/mActionSaveAsSVG.png" ) );
mActionPrint->setIcon( QgisApp::getThemeIcon( "/mActionFilePrint.png" ) );
mActionZoomAll->setIcon( QgisApp::getThemeIcon( "/mActionZoomFullExtent.png" ) );
mActionZoomIn->setIcon( QgisApp::getThemeIcon( "/mActionZoomIn.png" ) );
mActionZoomOut->setIcon( QgisApp::getThemeIcon( "/mActionZoomOut.png" ) );
mActionRefreshView->setIcon( QgisApp::getThemeIcon( "/mActionDraw.png" ) );
mActionAddImage->setIcon( QgisApp::getThemeIcon( "/mActionSaveMapAsImage.png" ) );
mActionAddNewMap->setIcon( QgisApp::getThemeIcon( "/mActionAddRasterLayer.png" ) );
mActionAddNewLabel->setIcon( QgisApp::getThemeIcon( "/mActionLabel.png" ) );
mActionAddNewLegend->setIcon( QgisApp::getThemeIcon( "/mActionAddLegend.png" ) );
mActionAddNewScalebar->setIcon( QgisApp::getThemeIcon( "/mActionScaleBar.png" ) );
mActionSelectMoveItem->setIcon( QgisApp::getThemeIcon( "/mActionPan.png" ) );
}
void QgsComposer::connectSlots()
{
connect( mView, SIGNAL( selectedItemChanged( const QgsComposerItem* ) ), this, SLOT( showItemOptions( const QgsComposerItem* ) ) );
connect( mView, SIGNAL( composerLabelAdded( QgsComposerLabel* ) ), this, SLOT( addComposerLabel( QgsComposerLabel* ) ) );
connect( mView, SIGNAL( composerMapAdded( QgsComposerMap* ) ), this, SLOT( addComposerMap( QgsComposerMap* ) ) );
connect( mView, SIGNAL( itemRemoved( QgsComposerItem* ) ), this, SLOT( deleteItem( QgsComposerItem* ) ) );
connect( mView, SIGNAL( composerScaleBarAdded( QgsComposerScaleBar* ) ), this, SLOT( addComposerScaleBar( QgsComposerScaleBar* ) ) );
connect( mView, SIGNAL( composerLegendAdded( QgsComposerLegend* ) ), this, SLOT( addComposerLegend( QgsComposerLegend* ) ) );
connect( mView, SIGNAL( composerPictureAdded( QgsComposerPicture* ) ), this, SLOT( addComposerPicture( QgsComposerPicture* ) ) );
connect( mView, SIGNAL( actionFinished() ), this, SLOT( setSelectionTool() ) );
}
void QgsComposer::open( void )
{
if ( mFirstTime )
{
//mComposition->createDefault();
mFirstTime = false;
show();
zoomFull(); // zoomFull() does not work properly until we have called show()
}
else
{
show(); //make sure the window is displayed - with a saved project, it's possible to not have already called show()
//is that a bug?
activate(); //bring the composer window to the front
}
}
void QgsComposer::activate()
{
raise();
setWindowState( windowState() & ~Qt::WindowMinimized );
activateWindow();
}
#ifdef Q_WS_MAC
void QgsComposer::changeEvent( QEvent* event )
{
QMainWindow::changeEvent( event );
switch ( event->type() )
{
case QEvent::ActivationChange:
if ( QApplication::activeWindow() == this )
{
mWindowAction->setChecked( true );
}
break;
default:
break;
}
}
void QgsComposer::closeEvent( QCloseEvent *event )
{
QMainWindow::closeEvent( event );
if ( event->isAccepted() )
{
QgisApp::instance()->removeWindow( mWindowAction );
}
}
void QgsComposer::showEvent( QShowEvent *event )
{
QMainWindow::showEvent( event );
// add to menu if (re)opening window (event not due to unminimize)
if ( !event->spontaneous() )
{
QgisApp::instance()->addWindow( mWindowAction );
}
}
#endif
void QgsComposer::showCompositionOptions( QWidget *w )
{
QWidget* currentWidget = mItemStackedWidget->currentWidget();
mItemStackedWidget->removeWidget( currentWidget );
mItemStackedWidget->addWidget( w );
}
void QgsComposer::showItemOptions( const QgsComposerItem* item )
{
QWidget* currentWidget = mItemStackedWidget->currentWidget();
if ( !item )
{
mItemStackedWidget->removeWidget( currentWidget );
mItemStackedWidget->setCurrentWidget( 0 );
return;
}
QMap<QgsComposerItem*, QWidget*>::iterator it = mItemWidgetMap.find( const_cast<QgsComposerItem*>( item ) );
if ( it == mItemWidgetMap.constEnd() )
{
return;
}
QWidget* newWidget = it.value();
if ( !newWidget || newWidget == currentWidget ) //bail out if new widget does not exist or is already there
{
return;
}
mItemStackedWidget->removeWidget( currentWidget );
mItemStackedWidget->addWidget( newWidget );
mItemStackedWidget->setCurrentWidget( newWidget );
//newWidget->show();
}
QgsMapCanvas *QgsComposer::mapCanvas( void )
{
return mQgis->mapCanvas();
}
QgsComposerView *QgsComposer::view( void )
{
return mView;
}
/*QgsComposition *QgsComposer::composition(void)
{
return mComposition;
}*/
void QgsComposer::zoomFull( void )
{
if ( mView )
{
mView->fitInView( 0, 0, mComposition->paperWidth(), mComposition->paperHeight(), Qt::KeepAspectRatio );
}
}
void QgsComposer::on_mActionZoomAll_activated( void )
{
zoomFull();
}
void QgsComposer::on_mActionZoomIn_activated( void )
{
mView->scale( 2, 2 );
//mView->update();
}
void QgsComposer::on_mActionZoomOut_activated( void )
{
mView->scale( .5, .5 );
//mView->update();
}
void QgsComposer::on_mActionRefreshView_activated( void )
{
if ( mComposition )
{
mComposition->update();
}
}
void QgsComposer::on_mActionPrint_activated( void )
{
if ( !mComposition )
{
return;
}
QPrinter printer;
//try to set most of the print dialog settings based on composer properties
if ( mComposition->paperHeight() > mComposition->paperWidth() )
{
printer.setOrientation( QPrinter::Portrait );
}
else
{
printer.setOrientation( QPrinter::Landscape );
}
//set resolution based on composer setting
printer.setFullPage( true );
printer.setColorMode( QPrinter::Color );
QPrintDialog printDialog( &printer );
if ( printDialog.exec() == QDialog::Accepted )
{
//set user-defined resolution
if ( mComposition )
{
printer.setResolution( mComposition->printoutResolution() );
}
QPainter p( &printer );
QgsComposition::PlotStyle savedPlotStyle = mComposition->plotStyle();
mComposition->setPlotStyle( QgsComposition::Print );
QApplication::setOverrideCursor( Qt::BusyCursor );
#if QT_VERSION < 0x040400
QRectF paperRect( 0, 0, mComposition->paperWidth(), mComposition->paperHeight() );
QRect pageRect = printer.pageRect();
mComposition->render( &p, pageRect, paperRect );
#else
//better in case of custom page size, but only possible with Qt>=4.4.0
QRectF paperRectMM = printer.pageRect( QPrinter::Millimeter );
QRectF paperRectPixel = printer.pageRect( QPrinter::DevicePixel );
mComposition->render( &p, paperRectPixel, paperRectMM );
#endif
mComposition->setPlotStyle( savedPlotStyle );
QApplication::restoreOverrideCursor();
}
#if 0
/* Uff!!! It is impossible to set a custom page size for QPrinter.
* Only the sizes hardcoded in Qt library can be used.
* 'Fortunately', it seems that everything is written to postscript output file,
* regardless the pages size ->
*
* 1) outputToFile == false: If the output page size doesn't match the user defined size
* (in QgsComposer) the output is rescaled and centered so that
* it fit to the select output page size.
* a warning is displayed, that the map was rescaled.
*
* 2) outputToFile == true: the output postscript file is written (page size is not
* important but bigger is better because it lefts enough space
* in BoundingBox definition), then the file is reopened,
* and the BoundingBox is redefined.
*/
// NOTE: QT 3.2 has QPrinter::setOptionEnabled but only for three options
if ( !mPrinter )
{
mPrinter = new QPrinter( QPrinter::PrinterResolution );
//mPrinter = new QPrinter ( QPrinter::HighResolution );
//mPrinter = new QPrinter ( QPrinter::ScreenResolution );
mPrinter->setFullPage( true );
#ifndef Q_OS_MACX
// For Qt/Mac 3, don't set outputToFile to true before calling setup
// because it wiil suppress the Print dialog and output to file without
// giving the user a chance to select a printer instead.
// The Mac Print dialog provides an option to create a pdf which is
// intended to be invisible to the application. If an eps is desired,
// a custom Mac Print dialog is needed.
// There is a bug in Qt<=4.2.2 (dialog is not correct) if output is set to file
// => disable until they fix it
//mPrinter->setOutputFileName ( QDir::convertSeparators ( QDir::home().path() + "/" + "qgis.eps") );
#endif
mPrinter->setColorMode( QPrinter::Color );
mPrinter->setPageSize( QPrinter::A4 ); //would be nice set this based on the composition paper size
}
else
{
// Because of bug in Qt<=4.2.2 (dialog is not correct) we have to reset always
// to printer otherwise print to file is checked but printer combobox is in dialog
mPrinter->setOutputFileName( NULL );
}
//set the resolution and paper orientation each time we call up the dialog, not just the first time we run it
mPrinter->setResolution( mComposition->resolution() );
if ( mComposition->paperOrientation() == QgsComposition::Portrait )
{
mPrinter->setOrientation( QPrinter::Portrait );
}
else
{
mPrinter->setOrientation( QPrinter::Landscape );
}
//if ( mPrinter->setup(this) ) {
QPrintDialog printDialog( mPrinter, this );
if ( printDialog.exec() == QDialog::Accepted )
{
// TODO: mPrinter->setup() moves the composer under Qgisapp, get it to foreground somehow
// raise() for now, is it something better?
raise();
// TODO: Qt does not add pagesize to output file, it can cause problems if ps2pdf is used
// or if default page on printer is different.
// We should add somewhere in output file:
// << /PageSize [ %d %d ] >> setpagedevice
// %d %d is width and height in points
// WARNING: If QCanvasView receives repaint signal during the printing
// (e.g. covered by QPrinter::setup dialog) it breaks somehow drawing of QCanvas items
// (for example not all features in the map are drawn.
// I don't know how to stop temporarily updating, (I don't want to reimplement
// repaint in QCanvasView, so I unset the view, print and reset.
mView->setScene( 0 );
int resolution = mPrinter->resolution();
QgsDebugMsg( QString( "Resolution = %1" ).arg( resolution ) );
//double scale = resolution / 25.4 / mComposition->scale();
mComposition->setPlotStyle( QgsComposition::Postscript );
if ( !mPrinter->outputFileName().isNull() )
{
try
{
QgsDebugMsg( "Print to file" );
QPrinter::PageSize psize = QPrinter::A4; //sensible default
// WARNING mPrinter->outputFormat() returns always 0 in Qt 4.2.2
// => we have to check extension
bool isPs = false;
if ( mPrinter->outputFileName().right( 3 ).toLower() == ".ps" || mPrinter->outputFileName().right( 4 ).toLower() == ".eps" )
{
isPs = true;
}
//if ( mPrinter->outputFormat() == QPrinter::PostScriptFormat )
if ( isPs )
{
// NOTE: setPageSize after setup() works, but setOrientation does not
// -> the BoundingBox must follow the orientation
psize = mPrinter->pageSize();
// B0 ( 1000x1414mm = 2835x4008pt ) is the biggest defined in Qt, a map can be bigger
// but probably not bigger than 9999x9999pt = 3527x3527mm
mPrinter->setPageSize( QPrinter::B0 );
}
QPainter p( mPrinter );
//p.scale(scale, scale);
//QRectF renderArea(0, 0, (mComposition->paperWidth() * mComposition->scale()),
//(mComposition->paperHeight() * mComposition->scale()));
mComposition->canvas()->render( &p/*, renderArea*/ );
p.end();
QgsDebugMsg( QString( "mPrinter->outputFormat() = %1" ).arg( mPrinter->outputFormat() ) );
//if ( mPrinter->outputFormat() == QPrinter::PostScriptFormat )
if ( isPs )
{
// reset the page
mPrinter->setPageSize( psize );
QFile f( mPrinter->outputFileName() );
// Overwrite the bounding box
QgsDebugMsg( "Overwrite the bounding box" );
if ( !f.open( QIODevice::ReadWrite ) )
{
throw QgsIOException( tr( "Couldn't open " ) + f.name() + tr( " for read/write" ) );
}
Q_LONG offset = 0;
Q_LONG size;
bool found = false;
QString s;
char buf[101];
while ( !f.atEnd() )
{
size = f.readLine( buf, 100 );
s = QString( buf );
if ( s.find( "%%BoundingBox:" ) == 0 )
{
found = true;
break;
}
offset += size;
}
if ( found )
{
int w, h;
w = ( int )( 72 * mComposition->paperWidth() / 25.4 );
h = ( int )( 72 * mComposition->paperHeight() / 25.4 );
if ( mPrinter->orientation() == QPrinter::Landscape )
{
int tmp = w;
w = h;
h = tmp;
}
s.sprintf( "%%%%BoundingBox: 0 0 %d %d", w, h );
if ( s.length() > size )
{
int shift = s.length() - size;
shiftFileContent( &f, offset + size + 1, shift );
}
else
{
if ( !f.at( offset ) )
{
QMessageBox::warning( this, tr( "Error in Print" ), tr( "Cannot seek" ) );
}
else
{
// Write spaces (for case the size > s.length() )
QString es;
es.fill( ' ', size - 1 );
f.flush();
if ( f.writeBlock( es.toLocal8Bit().data(), size - 1 ) < size - 1 )
{
QMessageBox::warning( this, tr( "Error in Print" ), tr( "Cannot overwrite BoundingBox" ) );
}
f.flush();
f.at( offset );
f.flush();
if ( f.writeBlock( s.toLocal8Bit().data(), s.length() ) < s.length() - 1 )
{
QMessageBox::warning( this, tr( "Error in Print" ), tr( "Cannot overwrite BoundingBox" ) );
}
f.flush();
} //END else (!f.at(offset))
} //END else (s.length() > size)
} //END if(found)
else
{
QMessageBox::warning( this, tr( "Error in Print" ), tr( "Cannot find BoundingBox" ) );
}
f.close();
// Overwrite translate
if ( mPrinter->orientation() == QPrinter::Portrait )
{
QgsDebugMsg( "Orientation portraint -> overwrite translate" );
if ( !f.open( QIODevice::ReadWrite ) )
{
throw QgsIOException( tr( "Couldn't open " ) + f.name() + tr( " for read/write" ) );
}
offset = 0;
found = false;
//Example Qt3:
//0 4008 translate 1 -1 scale/defM ...
//QRegExp rx ( "^0 [^ ]+ translate ([^ ]+ [^ ]+) scale/defM matrix CM d \\} d" );
//Example Qt4:
//0 0 translate 0.239999 -0.239999 scale } def
QRegExp rx( "^0 [^ ]+ translate ([^ ]+ [^ ]+) scale \\} def" );
while ( !f.atEnd() )
{
size = f.readLine( buf, 100 );
s = QString( buf );
if ( rx.search( s ) != -1 )
{
found = true;
break;
}
offset += size;
} //END while( !f.atEnd() )
if ( found )
{
int trans;
trans = ( int )( 72 * mComposition->paperHeight() / 25.4 );
QgsDebugMsg( QString( "trans = %1" ).arg( trans ) );
//Qt3:
//s.sprintf( "0 %d translate %s scale/defM matrix CM d } d", trans, (const char *)rx.cap(1).toLocal8Bit().data() );
//Qt4:
s.sprintf( "0 %d translate %s scale } def\n", trans, ( const char * ) rx.cap( 1 ).toLocal8Bit().data() );
QgsDebugMsg( QString( "s.length() = %1 size = %2" ).arg( s.length() ).arg( size ) );
if ( s.length() > size )
{
//QMessageBox::warning(this, tr("Error in Print"), tr("Cannot format translate"));
// Move the content up
int shift = s.length() - size;
/*
int last = f.size() + shift -1;
for ( int i = last; i > offset + size; i-- )
{
f.at(i-shift);
QByteArray ba = f.read(1);
f.at(i);
f.write(ba);
}
*/
shiftFileContent( &f, offset + size + 1, shift );
} //END if( s.length() > size)
// Overwrite the row
if ( !f.at( offset ) )
{
QMessageBox::warning( this, tr( "Error in Print" ), tr( "Cannot seek" ) );
}
else
{
/* Write spaces (for case the size > s.length() ) */
QString es;
es.fill( ' ', size - 1 );
f.flush();
if ( f.writeBlock( es.toLocal8Bit().data(), size - 1 ) < size - 1 )
{
QMessageBox::warning( this, tr( "Error in Print" ), tr( "Cannot overwrite translate" ) );
}
f.flush();
f.at( offset );
f.flush();
if ( f.writeBlock( s.toLocal8Bit().data(), s.length() ) < s.length() - 1 )
{
QMessageBox::warning( this, tr( "Error in Print" ), tr( "Cannot overwrite translate" ) );
}
f.flush();
} //END else
}
else
{
QMessageBox::warning( this, tr( "Error in Print" ), tr( "Cannot find translate" ) );
}
f.close();
}
}
}
catch ( QgsIOException e )
{
QMessageBox::warning( this, tr( "File IO Error" ), e.what() );
}
}
else
{ // print to printer
bool print = true;
// Check size
QgsDebugMsg( QString( "Paper: %1 x %2" ).arg( mPrinter->widthMM() ).arg( mPrinter->heightMM() ) );
if ( mComposition->paperWidth() != mPrinter->widthMM() || mComposition->paperHeight() != mPrinter->heightMM() )
{
int answer = QMessageBox::warning( 0, tr( "Paper does not match" ),
tr( "The selected paper size does not match the composition size" ),
QMessageBox::Ok, QMessageBox::Abort );
if ( answer == QMessageBox::Abort )
{
print = false;
}
} //END if(compositionSize != paperSize)
if ( print )
{
QgsDebugMsg( "Printing ... " );
QPainter p( mPrinter );
//p.scale(scale, scale);
//MH: is this necessary?
//QRectF renderArea(0, 0, (mComposition->paperWidth() * mComposition->scale()),
//(mComposition->paperHeight() * mComposition->scale()));
mComposition->canvas()->render( &p/*, renderArea*/ );
p.end();
QgsDebugMsg( "... printing finished" );
} //END if ( print )
}
mComposition->setPlotStyle( QgsComposition::Preview );
mView->setScene( mComposition->canvas() );
}
else
{
raise();
}
#endif //0
}
#if 0
bool QgsComposer::shiftFileContent( QFile *file, Q_LONG start, int shift )
{
int last = file->size() + shift - 1;
for ( int i = last; i >= start + shift; i-- )
{
if ( !file->at( i - shift ) ) return false;
QByteArray ba = file->read( 1 );
if ( ba.isEmpty() ) return false;
if ( !file->at( i ) ) return false;
if ( file->write( ba ) != 1 ) return false;
}
return true;
}
#endif //0
void QgsComposer::on_mActionExportAsImage_activated( void )
{
#if 0
// Image size
int width = ( int )( mComposition->resolution() * mComposition->paperWidth() / 25.4 );
int height = ( int )( mComposition->resolution() * mComposition->paperHeight() / 25.4 );
int memuse = width * height * 3 / 1000000; // pixmap + image
QgsDebugMsg( QString( "Image %1 x %2" ).arg( width ).arg( height ) );
QgsDebugMsg( QString( "memuse = %1" ).arg( memuse ) );
if ( memuse > 200 ) // cca 4500 x 4500
{
int answer = QMessageBox::warning( 0, tr( "Big image" ),
tr( "To create image " ) + QString::number( width ) + " x "
+ QString::number( height )
+ tr( " requires circa " )
+ QString::number( memuse ) + tr( " MB of memory" ),
QMessageBox::Ok, QMessageBox::Abort );
raise();
if ( answer == QMessageBox::Abort ) return;
}
// Get file and format (stolen from qgisapp.cpp but modified significantely)
//create a map to hold the QImageIO names and the filter names
//the QImageIO name must be passed to the mapcanvas saveas image function
typedef QMap<QString, QString> FilterMap;
FilterMap myFilterMap;
//find out the last used filter
QSettings myQSettings; // where we keep last used filter in persistant state
QString myLastUsedFormat = myQSettings.readEntry( "/UI/lastSaveAsImageFormat", "png" );
QString myLastUsedFile = myQSettings.readEntry( "/UI/lastSaveAsImageFile", "qgis.png" );
QFileInfo file( myLastUsedFile );
// get a list of supported output image types
int myCounterInt = 0;
QString myFilters;
QString myLastUsedFilter;
for ( ; myCounterInt < QImageWriter::supportedImageFormats().count(); myCounterInt++ )
{
QString myFormat = QString( QImageWriter::supportedImageFormats().at( myCounterInt ) );
QString myFilter = myFormat + " " + tr( "format" ) + " (*." + myFormat.lower() + " *." + myFormat.upper() + ")";
if ( myCounterInt > 0 ) myFilters += ";;";
myFilters += myFilter;
myFilterMap[myFilter] = myFormat;
if ( myFormat == myLastUsedFormat )
{
myLastUsedFilter = myFilter;
}
}
#ifdef QGISDEBUG
QgsDebugMsg( "Available Filters Map: " );
FilterMap::Iterator myIterator;
for ( myIterator = myFilterMap.begin(); myIterator != myFilterMap.end(); ++myIterator )
{
QgsDebugMsg( QString( "%1 : %2" ).arg( myIterator.key() ).arg( myIterator.data() ) );
}
#endif
//create a file dialog using the the filter list generated above
std::auto_ptr < QFileDialog > myQFileDialog(
new QFileDialog(
this,
tr( "Choose a file name to save the map image as" ),
file.path(),
myFilters
)
);
myQFileDialog->selectFile( file.fileName() );
// allow for selection of more than one file
myQFileDialog->setMode( QFileDialog::AnyFile );
// set the filter to the last one used
myQFileDialog->selectFilter( myLastUsedFilter );
// set the 'Open' button to something that makes more sense
myQFileDialog->setAcceptMode( QFileDialog::AcceptSave );
//prompt the user for a file name
QString myOutputFileNameQString; // = myQFileDialog->getSaveFileName(); //delete this
int result = myQFileDialog->exec();
raise();
if ( result != QDialog::Accepted ) return;
myOutputFileNameQString = myQFileDialog->selectedFiles().first();
QString myFilterString = myQFileDialog->selectedFilter();
QgsDebugMsg( QString( "Selected filter: %1" ).arg( myFilterString ) );
QgsDebugMsg( QString( "Image type: %1" ).arg( myFilterMap[myFilterString] ) );
myQSettings.writeEntry( "/UI/lastSaveAsImageFormat", myFilterMap[myFilterString] );
myQSettings.writeEntry( "/UI/lastSaveAsImageFile", myOutputFileNameQString );
if ( myOutputFileNameQString == "" ) return;
double scale = ( double )( mComposition->resolution() / 25.4 / mComposition->scale() );
mView->setScene( 0 );
mComposition->setPlotStyle( QgsComposition::Print );
QPixmap pixmap( width, height );
pixmap.fill( QColor( 255, 255, 255 ) ) ;
QPainter p( &pixmap );
p.scale( scale, scale );
QRectF renderArea( 0, 0, ( mComposition->paperWidth() * mComposition->scale() ), ( mComposition->paperHeight() * mComposition->scale() ) );
mComposition->canvas()->render( &p, renderArea );
p.end();
mComposition->setPlotStyle( QgsComposition::Preview );
mView->setScene( mComposition->canvas() );
pixmap.save( myOutputFileNameQString, myFilterMap[myFilterString].toLocal8Bit().data() );
#endif //0
}
void QgsComposer::on_mActionExportAsSVG_activated( void )
{
QString myQSettingsLabel = "/UI/displaySVGWarning";
QSettings myQSettings;
bool displaySVGWarning = myQSettings.value( myQSettingsLabel, true ).toBool();
if ( displaySVGWarning )
{
QgsMessageViewer* m = new QgsMessageViewer( this );
m->setWindowTitle( tr( "SVG warning" ) );
m->setCheckBoxText( tr( "Don't show this message again" ) );
m->setCheckBoxState( Qt::Unchecked );
m->setCheckBoxVisible( true );
m->setCheckBoxQSettingsLabel( myQSettingsLabel );
m->setMessageAsHtml( tr( "<p>The SVG export function in Qgis has several "
"problems due to bugs and deficiencies in the "
#if QT_VERSION < 0x040300