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qgsgrassmodule.cpp
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qgsgrassmodule.cpp
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/***************************************************************************
qgsgrasstools.cpp
-------------------
begin : March, 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 <iostream>
#include <qapplication.h>
#include <qdir.h>
#include <qfile.h>
#include <qsettings.h>
#include <qpixmap.h>
#include <q3listbox.h>
#include <qstringlist.h>
#include <qlabel.h>
#include <QComboBox>
#include <qspinbox.h>
#include <qpushbutton.h>
#include <qmessagebox.h>
#include <qinputdialog.h>
#include <qsettings.h>
#include <qpainter.h>
#include <q3painter.h>
#include <qpixmap.h>
#include <qpen.h>
#include <q3pointarray.h>
#include <qcursor.h>
#include <qnamespace.h>
#include <q3listview.h>
#include <qcolordialog.h>
#include <q3table.h>
#include <qstatusbar.h>
#include <qevent.h>
#include <qpoint.h>
#include <qsize.h>
#include <qdom.h>
#include <qtabwidget.h>
#include <qlayout.h>
#include <q3process.h>
#include <q3cstring.h>
#include <qlineedit.h>
#include <q3textbrowser.h>
#include <qdir.h>
#include <qregexp.h>
#include <q3progressbar.h>
#include <q3stylesheet.h>
#include <q3groupbox.h>
#include <qpainter.h>
#include <qpixmap.h>
#include <q3picture.h>
#include <qimage.h>
//Added by qt3to4:
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QGridLayout>
#include <QIntValidator>
#include <QDoubleValidator>
#include <QRegExpValidator>
#include <QPushButton>
#include <QGroupBox>
#include <QFileDialog>
#include <QProcess>
#include "qgis.h"
#include "qgsapplication.h"
#include "qgsmapcanvas.h"
#include "qgsmaplayer.h"
#include "qgsvectorlayer.h"
#include <qgsrasterlayer.h>
#include "qgsdatasourceuri.h"
#include "qgsdataprovider.h"
#include "qgsfield.h"
#include "qgsfeature.h"
#include "qgsfeatureattribute.h"
extern "C" {
#include <grass/gis.h>
#include <grass/Vect.h>
}
#include "../../src/providers/grass/qgsgrass.h"
#include "../../src/providers/grass/qgsgrassprovider.h"
#include "qgsgrassattributes.h"
#include "qgsgrassmodule.h"
#include "qgsgrassmapcalc.h"
#include "qgsgrasstools.h"
#include "qgsgrassselect.h"
bool QgsGrassModule::mExecPathInited = 0;
QStringList QgsGrassModule::mExecPath;
bool QgsGrassModule::inExecPath ( QString file )
{
#ifdef QGISDEBUG
std::cerr << "QgsGrassModule::inExecPath()" << std::endl;
#endif
// Init mExecPath
// Windows searches first in current directory
if ( !mExecPathInited )
{
QString path = getenv("PATH");
std::cerr << "path = " << path.ascii() << std::endl;
mExecPath = path.split ( ";" );
mExecPath.prepend ( QgsApplication::applicationDirPath() );
mExecPathInited = true;
}
// Search for module
for ( QStringList::iterator it = mExecPath.begin();
it != mExecPath.end(); ++it )
{
if ( QFile::exists ( *it + "/" + file ) )
{
return true;
}
}
return false;
}
QgsGrassModule::QgsGrassModule ( QgsGrassTools *tools, QgisApp *qgisApp, QgisIface *iface,
QString path, QWidget * parent, const char * name, Qt::WFlags f )
:QgsGrassModuleBase ( ), mSuccess(false)
{
#ifdef QGISDEBUG
std::cerr << "QgsGrassModule()" << std::endl;
#endif
setupUi(this);
mPath = path;
mTools = tools;
mQgisApp = qgisApp;
mIface = iface;
mCanvas = mIface->getMapCanvas();
mParent = parent;
//mAppDir = QgsApplication::applicationDirPath();
mAppDir = mTools->appDir();
/* Read module description and create options */
// Open QGIS module description
QString mpath = mPath + ".qgm";
QFile qFile ( mpath );
if ( !qFile.exists() ) {
QMessageBox::warning( 0, "Warning", "The module file (" + mpath + ") not found." );
return;
}
if ( ! qFile.open( QIODevice::ReadOnly ) ) {
QMessageBox::warning( 0, "Warning", "Cannot open module file (" + mpath + ")" );
return;
}
QDomDocument qDoc ( "qgisgrassmodule" );
QString err;
int line, column;
if ( !qDoc.setContent( &qFile, &err, &line, &column ) ) {
QString errmsg = "Cannot read module file (" + mpath + "):\n" + err + "\nat line "
+ QString::number(line) + " column " + QString::number(column);
std::cerr << errmsg.toLocal8Bit().data() << std::endl;
QMessageBox::warning( 0, "Warning", errmsg );
qFile.close();
return;
}
qFile.close();
QDomElement qDocElem = qDoc.documentElement();
// Read GRASS module description
QString xName = qDocElem.attribute("module");
// Binary modules on windows has .exe extension
// but not all modules have to be binary (can be scripts)
// => test if the module is in path and if it is not
// add .exe and test again
#ifdef WIN32
if ( inExecPath ( xName ) )
{
mXName = xName;
}
else if ( inExecPath ( xName + ".exe" ) )
{
mXName = xName + ".exe";
}
else
{
std::cerr << "Module " << xName.ascii() << " not found" << std::endl;
QMessageBox::warning( 0, "Warning", "Module " + xName + " not found" );
return;
}
#else
mXName = xName;
#endif
if ( xName == "r.mapcalc" )
{
QGridLayout *layout = new QGridLayout ( mTabWidget->page(0), 1, 1 );
mOptions = new QgsGrassMapcalc ( mTools, this,
mQgisApp, mIface, mTabWidget->page(0) );
QWidget *w = dynamic_cast<QWidget *>(mOptions);
std::cerr << "w = " << w << std::endl;
layout->addWidget ( dynamic_cast<QWidget *>(mOptions), 0, 0 );
}
else
{
mOptions = new QgsGrassModuleStandardOptions ( mTools, this,
mQgisApp, mIface, mXName, qDocElem, mTabWidget->page(0) );
}
// Hide display if there is no output
if ( mOptions->output(QgsGrassModuleOption::Vector).size() == 0
&& mOptions->output(QgsGrassModuleOption::Raster).size() == 0 )
{
mViewButton->hide();
}
mViewButton->setEnabled(false);
// Create manual if available
QString gisBase = getenv("GISBASE");
QString manPath = gisBase + "/docs/html/" + xName + ".html";
QFile manFile ( manPath );
if ( manFile.exists() ) {
mManualTextBrowser->setSource ( manPath );
}
connect ( &mProcess, SIGNAL(readyReadStandardOutput()), this, SLOT(readStdout()));
connect ( &mProcess, SIGNAL(readyReadStandardError()), this, SLOT(readStderr()));
connect ( &mProcess, SIGNAL(finished(int,QProcess::ExitStatus)), this, SLOT(finished(int,QProcess::ExitStatus)));
char *env = "GRASS_MESSAGE_FORMAT=gui";
char *envstr = new char[strlen(env)+1];
strcpy ( envstr, env );
putenv( envstr );
mOutputTextBrowser->setTextFormat(Qt::RichText);
mOutputTextBrowser->setReadOnly(TRUE);
}
/******************* QgsGrassModuleOptions *******************/
QgsGrassModuleOptions::QgsGrassModuleOptions (
QgsGrassTools *tools, QgsGrassModule *module,
QgisApp *qgisApp, QgisIface *iface )
{
#ifdef QGISDEBUG
std::cerr << "QgsGrassModuleOptions()" << std::endl;
#endif
mTools = tools;
mModule = module;
mQgisApp = qgisApp;
mIface = iface;
mCanvas = mIface->getMapCanvas();
//mAppDir = QgsApplication::applicationDirPath();
mAppDir = mTools->appDir();
}
QgsGrassModuleOptions::~QgsGrassModuleOptions()
{
}
QStringList QgsGrassModuleOptions::arguments()
{
return QStringList();
}
/*************** QgsGrassModuleStandardOptions ***********************/
QgsGrassModuleStandardOptions::QgsGrassModuleStandardOptions (
QgsGrassTools *tools, QgsGrassModule *module,
QgisApp *qgisApp, QgisIface *iface,
QString xname, QDomElement qDocElem,
QWidget * parent, const char * name, Qt::WFlags f )
:QgsGrassModuleOptions( tools, module, qgisApp, iface),
QWidget ( parent, name, f )
{
#ifdef QGISDEBUG
std::cerr << "QgsGrassModuleStandardOptions()" << std::endl;
std::cerr << "PATH = " << getenv ("PATH") << std::endl;
#endif
mXName = xname;
mParent = parent;
QProcess process( this );
process.start ( mXName, QStringList ( "--interface-description") );
// ? Does binary on Win need .exe extention ?
// Return code 255 (-1) was correct in GRASS < 6.1.0
if ( !process.waitForFinished()
|| (process.exitCode() != 0 && process.exitCode() != 255) )
{
std::cerr << "process.exitCode() = " << process.exitCode() << std::endl;
QMessageBox::warning( 0, "Warning", "Cannot start module " + mXName );
return;
}
QByteArray gDescArray = process.readAllStandardOutput();
QByteArray errArray = process.readAllStandardError();
QDomDocument gDoc ( "task" );
QString err;
int line, column;
if ( !gDoc.setContent( (QByteArray)gDescArray, &err, &line, &column ) ) {
QString errmsg = "Cannot read module description (" + mXName + "):\n" + err + "\nat line "
+ QString::number(line) + " column " + QString::number(column);
std::cerr << errmsg.toLocal8Bit().data() << std::endl;
std::cerr << QString(gDescArray).local8Bit().data() << std::endl;
std::cerr << QString(errArray).local8Bit().data() << std::endl;
QMessageBox::warning( 0, "Warning", errmsg );
return;
}
QDomElement gDocElem = gDoc.documentElement();
// Read QGIS options and create controls
QDomNode n = qDocElem.firstChild();
//QVBoxLayout *layout = new QVBoxLayout ( mTabWidget->page(0), 10 );
QVBoxLayout *layout = new QVBoxLayout ( mParent, 10 );
while( !n.isNull() ) {
QDomElement e = n.toElement();
if( !e.isNull() ) {
QString optionType = e.tagName();
std::cout << "optionType = " << optionType.toLocal8Bit().data() << std::endl;
QString key = e.attribute("key");
std::cout << "key = " << key.toLocal8Bit().data() << std::endl;
QDomNode gnode = QgsGrassModule::nodeByKey ( gDocElem, key );
if ( gnode.isNull() ) {
QMessageBox::warning( 0, "Warning", "Cannot find key " + key );
return;
}
if ( optionType == "option" ) {
bool created = false;
// Check option type and create appropriate control
QDomNode promptNode = gnode.namedItem ( "gisprompt" );
if ( !promptNode.isNull() ) {
QDomElement promptElem = promptNode.toElement();
QString element = promptElem.attribute("element");
QString age = promptElem.attribute("age");
//std::cout << "element = " << element << " age = " << age << std::endl;
if ( age == "old" && ( element == "vector" || element == "cell") ) {
QgsGrassModuleInput *mi = new QgsGrassModuleInput (
mModule, this, key, e, gDocElem, gnode, mParent );
layout->addWidget ( mi );
created = true;
mItems.push_back(mi);
}
}
if ( !created ) {
QgsGrassModuleOption *so = new QgsGrassModuleOption (
mModule, key, e, gDocElem, gnode, mParent );
layout->addWidget ( so );
created = true;
mItems.push_back(so);
}
}
else if ( optionType == "ogr" )
{
QgsGrassModuleGdalInput *mi = new QgsGrassModuleGdalInput (
mModule, QgsGrassModuleGdalInput::Ogr, key, e,
gDocElem, gnode, mParent );
layout->addWidget ( mi );
mItems.push_back(mi);
}
else if ( optionType == "gdal" )
{
QgsGrassModuleGdalInput *mi = new QgsGrassModuleGdalInput (
mModule, QgsGrassModuleGdalInput::Gdal, key, e,
gDocElem, gnode, mParent );
layout->addWidget ( mi );
mItems.push_back(mi);
}
else if ( optionType == "field" )
{
QgsGrassModuleField *mi = new QgsGrassModuleField (
mModule, this, key, e,
gDocElem, gnode, mParent );
layout->addWidget ( mi );
mItems.push_back(mi);
}
else if ( optionType == "selection" )
{
QgsGrassModuleSelection *mi = new QgsGrassModuleSelection (
mModule, this, key, e,
gDocElem, gnode, mParent );
layout->addWidget ( mi );
mItems.push_back(mi);
}
else if ( optionType == "file" )
{
QgsGrassModuleFile *mi = new QgsGrassModuleFile (
mModule, key, e, gDocElem, gnode, mParent );
layout->addWidget ( mi );
mItems.push_back(mi);
}
else if ( optionType == "flag" )
{
QgsGrassModuleFlag *flag = new QgsGrassModuleFlag (
mModule, key, e, gDocElem, gnode, mParent );
layout->addWidget ( flag );
mItems.push_back(flag);
}
}
n = n.nextSibling();
}
layout->addStretch();
}
QStringList QgsGrassModuleStandardOptions::arguments()
{
QStringList arg;
for ( int i = 0; i < mItems.size(); i++ )
{
QStringList list = mItems[i]->options();
for ( QStringList::Iterator it = list.begin();
it != list.end(); ++it )
{
arg.append ( *it );
}
}
return arg;
}
QgsGrassModuleItem *QgsGrassModuleStandardOptions::item ( QString id )
{
#ifdef QGISDEBUG
std::cerr << "QgsGrassModuleStandardOptions::item() id = "
<< id.toLocal8Bit().data() << std::endl;
#endif
for ( int i = 0; i < mItems.size(); i++ )
{
if ( mItems[i]->id() == id )
{
return mItems[i];
}
}
QMessageBox::warning( 0, "Warning", "Item with id " + id + " not found" );
return 0;
}
QStringList QgsGrassModuleStandardOptions::checkOutput()
{
#ifdef QGISDEBUG
std::cerr << "QgsGrassModuleStandardOptions::checkOutput()" << std::endl;
#endif
QStringList list;
for ( int i = 0; i < mItems.size(); i++ )
{
if ( typeid(*(mItems[i])) != typeid (QgsGrassModuleOption) ) {
continue;
}
QgsGrassModuleOption *opt =
dynamic_cast<QgsGrassModuleOption *> ( mItems[i] );
std::cerr << "opt->key() = " << opt->key().ascii() << std::endl;
if ( opt->isOutput() )
{
QString out = opt->outputExists();
if ( !out.isNull() )
{
list.append ( out );
}
}
}
return list;
}
QStringList QgsGrassModuleStandardOptions::output(int type )
{
#ifdef QGISDEBUG
std::cerr << "QgsGrassModuleStandardOptions::output()" << std::endl;
#endif
QStringList list;
for ( int i = 0; i < mItems.size(); i++ )
{
if ( typeid(*(mItems[i])) != typeid (QgsGrassModuleOption) ) {
continue;
}
QgsGrassModuleOption *opt =
dynamic_cast<QgsGrassModuleOption *> ( mItems[i] );
std::cerr << "opt->key() = " << opt->key().ascii() << std::endl;
if ( opt->isOutput() )
{
if ( opt->outputType() == type )
{
QString out = opt->value();
list.append ( out );
}
}
}
return list;
}
QStringList QgsGrassModuleStandardOptions::ready()
{
#ifdef QGISDEBUG
std::cerr << "QgsGrassModuleStandardOptions::ready()" << std::endl;
#endif
QStringList list;
for ( int i = 0; i < mItems.size(); i++ )
{
QString err = mItems[i]->ready();
if ( !err.isNull() )
{
list.append ( err );
}
}
return list;
}
QStringList QgsGrassModuleStandardOptions::checkRegion()
{
#ifdef QGISDEBUG
std::cerr << "QgsGrassModuleStandardOptions::checkRegion()" << std::endl;
#endif
QStringList list;
struct Cell_head currentWindow;
if ( !QgsGrass::region ( QgsGrass::getDefaultGisdbase(),
QgsGrass::getDefaultLocation(),
QgsGrass::getDefaultMapset(), ¤tWindow ) )
{
QMessageBox::warning( 0, "Warning", "Cannot get current region" );
return list;
}
for ( int i = 0; i < mItems.size(); i++ )
{
if ( typeid(*(mItems[i])) != typeid (QgsGrassModuleInput) ) {
continue;
}
struct Cell_head window;
QgsGrassModuleInput *item = dynamic_cast<QgsGrassModuleInput *>
(mItems[i]);
int mapType;
switch ( item->type() ) {
case QgsGrassModuleInput::Raster :
mapType = QgsGrass::Raster;
break;
case QgsGrassModuleInput::Vector :
mapType = QgsGrass::Vector;
break;
}
QStringList mm = item->currentMap().split("@");
QString map = mm.at(0);
QString mapset = QgsGrass::getDefaultMapset();
if ( mm.size() > 1 ) mapset = mm.at(1);
if ( !QgsGrass::mapRegion ( mapType,
QgsGrass::getDefaultGisdbase(),
QgsGrass::getDefaultLocation(), mapset, map,
&window ) )
{
QMessageBox::warning( 0, "Warning", "Cannot check region "
"of map " + item->currentMap() );
continue;
}
if ( G_window_overlap ( ¤tWindow ,
window.north, window.south, window.east, window.west) == 0 )
{
list.append ( item->currentMap() );
}
}
return list;
}
bool QgsGrassModuleStandardOptions::inputRegion ( struct Cell_head *window, bool all )
{
#ifdef QGISDEBUG
std::cerr << "QgsGrassModuleStandardOptions::inputRegion()" << std::endl;
#endif
// Get current resolution
if ( !QgsGrass::region ( QgsGrass::getDefaultGisdbase(),
QgsGrass::getDefaultLocation(),
QgsGrass::getDefaultMapset(), window ) )
{
QMessageBox::warning( 0, "Warning", "Cannot get current region" );
return false;
}
int rasterCount = 0;
int vectorCount = 0;
for ( int i = 0; i < mItems.size(); i++ )
{
if ( typeid(*(mItems[i])) != typeid (QgsGrassModuleInput) ) {
continue;
}
struct Cell_head mapWindow;
QgsGrassModuleInput *item = dynamic_cast<QgsGrassModuleInput *>
(mItems[i]);
if ( !all && !item->useRegion() ) continue;
int mapType;
switch ( item->type() ) {
case QgsGrassModuleInput::Raster :
mapType = QgsGrass::Raster;
break;
case QgsGrassModuleInput::Vector :
mapType = QgsGrass::Vector;
break;
}
QStringList mm = item->currentMap().split("@");
QString map = mm.at(0);
QString mapset = QgsGrass::getDefaultMapset();
if ( mm.size() > 1 ) mapset = mm.at(1);
if ( !QgsGrass::mapRegion ( mapType,
QgsGrass::getDefaultGisdbase(),
QgsGrass::getDefaultLocation(), mapset, map,
&mapWindow ) )
{
QMessageBox::warning( 0, "Warning", "Cannot set region "
"of map " + item->currentMap() );
return false;
}
// TODO: best way to set resolution ?
if ( item->type() == QgsGrassModuleInput::Raster
&& rasterCount == 0 )
{
QgsGrass::copyRegionResolution ( &mapWindow, window );
}
if ( rasterCount + vectorCount == 0 )
{
QgsGrass::copyRegionExtent ( &mapWindow, window );
}
else
{
QgsGrass::extendRegion ( &mapWindow, window );
}
if ( item->type() == QgsGrassModuleInput::Raster )
rasterCount++;
else if ( item->type() == QgsGrassModuleInput::Vector )
vectorCount++;
}
G_adjust_Cell_head3 ( window, 0, 0, 0 );
return true;
}
bool QgsGrassModuleStandardOptions::requestsRegion()
{
#ifdef QGISDEBUG
std::cerr << "QgsGrassModuleStandardOptions::requestsRegion()" << std::endl;
#endif
for ( int i = 0; i < mItems.size(); i++ )
{
if ( typeid(*(mItems[i])) != typeid (QgsGrassModuleInput) ) {
continue;
}
QgsGrassModuleInput *item = dynamic_cast<QgsGrassModuleInput *>
(mItems[i]);
if ( item->useRegion() ) return true;
}
return false;
}
bool QgsGrassModuleStandardOptions::usesRegion ()
{
#ifdef QGISDEBUG
std::cerr << "QgsGrassModuleStandardOptions::usesRegion()" << std::endl;
#endif
for ( int i = 0; i < mItems.size(); i++ )
{
if ( typeid(*(mItems[i])) == typeid (QgsGrassModuleInput) )
{
QgsGrassModuleInput *item =
dynamic_cast<QgsGrassModuleInput *>(mItems[i]);
if ( item->type() == QgsGrassModuleInput::Raster )
return true;
}
if ( typeid(*(mItems[i])) == typeid (QgsGrassModuleOption) )
{
QgsGrassModuleOption *item =
dynamic_cast<QgsGrassModuleOption *> ( mItems[i] );
if ( item->isOutput()
&& item->outputType() == QgsGrassModuleOption::Raster )
{
return true;
}
}
}
return false;
}
QgsGrassModuleStandardOptions::~QgsGrassModuleStandardOptions()
{
}
QString QgsGrassModule::label ( QString path )
{
#ifdef QGISDEBUG
std::cerr << "QgsGrassModule::label()" << std::endl;
#endif
// Open QGIS module description
path.append ( ".qgm" );
QFile qFile ( path );
if ( !qFile.exists() ) {
return QString ( "Not available, decription not found (" + path + ")" );
}
if ( ! qFile.open( QIODevice::ReadOnly ) ) {
return QString ( "Not available, cannot open description (" + path + ")" ) ;
}
QDomDocument qDoc ( "qgisgrassmodule" );
QString err;
int line, column;
if ( !qDoc.setContent( &qFile, &err, &line, &column ) ) {
QString errmsg = "Cannot read module file (" + path + "):\n" + err + "\nat line "
+ QString::number(line) + " column " + QString::number(column);
std::cerr << errmsg.toLocal8Bit().data() << std::endl;
QMessageBox::warning( 0, "Warning", errmsg );
qFile.close();
return QString ( "Not available, incorrect description (" + path + ")" );
}
qFile.close();
QDomElement qDocElem = qDoc.documentElement();
return ( qDocElem.attribute("label") );
}
QPixmap QgsGrassModule::pixmap ( QString path, int height )
{
#ifdef QGISDEBUG
std::cerr << "QgsGrassModule::pixmap()" << std::endl;
#endif
std::vector<QPixmap> pixmaps;
// Create vector of available pictures
int cnt = 1;
while ( 1 )
{
// SVG
QString fpath = path + "." + QString::number(cnt) + ".svg";
QFileInfo fi ( fpath );
if ( fi.exists() )
{
Q3Picture pic;
if ( ! pic.load ( fpath, "svg" ) ) break;
QRect br = pic.boundingRect();
double scale = 1. * height / br.height();
int width = (int) ( scale * br.width() );
if ( width <= 0 ) width = height; //should not happen
QPixmap pixmap ( width, height );
pixmap.fill ( QColor(255,255,255) );
QPainter painter ( &pixmap );
painter.setRenderHint(QPainter::Antialiasing);
// I am not sure if this factor is OK
scale *= 72.0 / pixmap.logicalDpiX() ;
painter.scale ( scale, scale );
painter.drawPicture ( -br.x(), -br.y(), pic );
painter.end();
pixmaps.push_back ( pixmap );
}
else // PNG
{
fpath = path + "." + QString::number(cnt) + ".png";
fi.setFile ( fpath );
if ( !fi.exists() ) break;
QPixmap pixmap;
if ( ! pixmap.load(fpath, "PNG" ) ) break;
double scale = 1. * height / pixmap.height();
int width = (int) ( scale * pixmap.width() );
QImage img = pixmap.convertToImage();
img = img.smoothScale ( width, height );
pixmap.convertFromImage ( img );
pixmaps.push_back ( pixmap );
}
cnt++;
}
// Get total width
int width = 0;
for ( int i = 0; i < pixmaps.size(); i++ ) {
width += pixmaps[i].width();
}
if ( width <= 0 ) width = height; //should not happen
int plusWidth = 8; // +
int arrowWidth = 9; // ->
int buffer = 10; // buffer around a sign
if ( pixmaps.size() > 1 ) width += arrowWidth + 2 * buffer; // ->
if ( pixmaps.size() > 2 ) width += plusWidth + 2 * buffer; // +
QPixmap pixmap ( width, height );
pixmap.fill(QColor(255,255,255));
QPainter painter ( &pixmap );
QColor color(200,200,200);
painter.setBrush(QBrush(color));
painter.setRenderHint(QPainter::Antialiasing);
int pos = 0;
for ( int i = 0; i < pixmaps.size(); i++ ) {
if ( i == 1 && pixmaps.size() == 3 ) { // +
pos += buffer;
painter.setPen( QPen(color,3) );
painter.drawLine ( pos, height/2, pos+plusWidth, height/2 );
painter.drawLine ( pos+plusWidth/2, height/2-plusWidth/2, pos+plusWidth/2, height/2+plusWidth/2 );
pos += buffer + plusWidth;
}
if ( (i == 1 && pixmaps.size() == 2) || (i == 2 && pixmaps.size() == 3) ) { // ->
pos += buffer;
painter.setPen( QPen(color,3) );
painter.drawLine ( pos, height/2, pos+arrowWidth-arrowWidth/2, height/2 );
Q3PointArray pa(3);
pa.setPoint(0, pos+arrowWidth/2+1, height/2-arrowWidth/2);
pa.setPoint(1, pos+arrowWidth, height/2 );
pa.setPoint(2, pos+arrowWidth/2+1, height/2+arrowWidth/2);
painter.setPen( QPen(color,1) );
painter.drawPolygon ( pa );
pos += buffer + arrowWidth;
}
painter.drawPixmap ( pos,0, pixmaps[i] );
pos += pixmaps[i].width();
}
painter.end();
return pixmap;
}
void QgsGrassModule::run()
{
#ifdef QGISDEBUG
std::cerr << "QgsGrassModule::run()" << std::endl;
#endif
if ( mProcess.state() == QProcess::Running ) {
mProcess.kill();
mRunButton->setText( tr("Run") );
} else {
//QString command;
QStringList arguments;
//mProcess.clearArguments();
//mProcess.addArgument( mXName );
//command = mXName;
// Check if options are ready
QStringList readyErrors = mOptions->ready();
if ( readyErrors.size() > 0 )
{
QString err;
for ( int i = 0; i < readyErrors.size(); i++ )
{
err.append ( readyErrors.at(i) + "<br>" );
}
QMessageBox::warning ( 0, "Warning", err );
return;
}
// Check/set region
struct Cell_head tempWindow;
bool resetRegion = false;
if ( mOptions->requestsRegion() )
{
if ( !mOptions->inputRegion ( &tempWindow, false ) )
{
QMessageBox::warning ( 0, "Warning", "Cannot get input region" );
return;
}
resetRegion = true;
}
else if ( mOptions->usesRegion() )
{
QStringList outsideRegion = mOptions->checkRegion();
if ( outsideRegion.size() > 0 )
{
if ( QgsGrass::versionMajor() >= 6 && QgsGrass::versionMinor() >= 1 )
{
int ret = QMessageBox::question ( 0, "Warning",
"Input " + outsideRegion.join(",")
+ " outside current region!",
"Use input region", "Continue", "Cancel" );
if ( ret == 2 ) return;
if ( ret == 0 ) resetRegion = true;
}
else
{
int ret = QMessageBox::question ( 0, "Warning",
"Input " + outsideRegion.join(",")
+ " outside current region!",
"Continue", "Cancel" );
if ( ret == 1 ) return;
}
if ( resetRegion )
{
if ( !mOptions->inputRegion ( &tempWindow, true ) )
{
QMessageBox::warning ( 0, "Warning",
"Cannot get input region" );
return;
}
}
}
}
// Check if output exists
QStringList outputExists = mOptions->checkOutput();
if ( outputExists.size() > 0 )
{
int ret = QMessageBox::question ( 0, "Warning",
"Output " + outputExists.join(",")
+ " exists! Overwrite?",
QMessageBox::Yes, QMessageBox::No );
if ( ret == QMessageBox::No ) return;
// r.mapcalc does not use standard parser
if ( typeid(*mOptions) != typeid(QgsGrassMapcalc) )
{
arguments.append ( "--o" );
//mProcess.addArgument( "--o" );
//command.append ( " --o" );
}
}
// Remember output maps
mOutputVector = mOptions->output(QgsGrassModuleOption::Vector);
std::cerr << "mOutputVector.size() = " << mOutputVector.size() << std::endl;
mOutputRaster = mOptions->output(QgsGrassModuleOption::Raster);
std::cerr << "mOutputRaster.size() = " << mOutputRaster.size() << std::endl;
mSuccess = false;
mViewButton->setEnabled(false);
QStringList list = mOptions->arguments();
for ( QStringList::Iterator it = list.begin(); it != list.end(); ++it ) {