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LimeReport/limereport/lrreportdesignwidget.cpp
Andy Maloney 94db98d596 Optionally monitor changes to files loaded with ReportEngine::loadFromFile() 
When using the designer as a stand alone application and the renderer/preview in the
user application, the preview window would have to be closed and opened again every
time a change was made to the report.

This change adds an optional QFileSystemWatcher to monitor changes to the report file
and automatically refreshes the preview in the application when it is saved.

It may be turned on using the new parameter to ReportEngine::loadFromFile().

If the preview window is open in the application and the file name changes or the file is
removed, inform the user and close the preview window.
2017-04-19 22:43:48 -04:00

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/***************************************************************************
* This file is part of the Lime Report project *
* Copyright (C) 2015 by Alexander Arin *
* arin_a@bk.ru *
* *
** GNU General Public License Usage **
* *
* This library 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 3 of the License, or *
* (at your option) any later version. *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
* *
** GNU Lesser General Public License **
* *
* This library is free software: you can redistribute it and/or modify *
* it under the terms of the GNU Lesser General Public License as *
* published by the Free Software Foundation, either version 3 of the *
* License, or (at your option) any later version. *
* You should have received a copy of the GNU Lesser General Public *
* License along with this library. *
* If not, see <http://www.gnu.org/licenses/>. *
* *
* This library 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. *
****************************************************************************/
#include "lrreportdesignwidget.h"
#include "serializators/lrxmlreader.h"
#include "serializators/lrxmlwriter.h"
#include "lrreportengine_p.h"
#include "lrbasedesignintf.h"
#include "lrsettingdialog.h"
#include <QDebug>
#include <QObject>
#include <QDockWidget>
#include <QtXml>
#include <QVBoxLayout>
#include <QFileDialog>
#include <QApplication>
#include <QTabWidget>
#include <QMessageBox>
namespace LimeReport {
// ReportDesignIntf
ReportDesignWidget::ReportDesignWidget(ReportEnginePrivate *report, QMainWindow *mainWindow, QWidget *parent) :
QWidget(parent), m_mainWindow(mainWindow), m_verticalGridStep(10), m_horizontalGridStep(10), m_useGrid(false)
{
m_tabWidget = new QTabWidget(this);
m_tabWidget->setTabPosition(QTabWidget::South);
QVBoxLayout* mainLayout = new QVBoxLayout(this);
mainLayout->addWidget(m_tabWidget);
setLayout(mainLayout);
if (!report) {
m_report=new ReportEnginePrivate(this);
m_report->setObjectName("report");
m_report->appendPage("page1");
}
else {
m_report=report;
if (!m_report->pageCount()) m_report->appendPage("page1");
}
createTabs();
connect(m_report,SIGNAL(pagesLoadFinished()),this,SLOT(slotPagesLoadFinished()));
connect(m_report,SIGNAL(cleared()),this,SIGNAL(cleared()));
connect(m_tabWidget, SIGNAL(currentChanged(int)), this, SLOT(slotCurrentTabChanged(int)));
//m_instance=this;
m_scriptEditor->setPlainText(m_report->scriptContext()->initScript());
m_zoomer = new GraphicsViewZoomer(activeView());
#ifdef Q_OS_WIN
m_defaultFont = QFont("Arial",10);
#endif
}
bool ReportDesignWidget::useMagnet() const
{
return m_useMagnet;
}
void ReportDesignWidget::setUseMagnet(bool useMagnet)
{
m_useMagnet = useMagnet;
for (int i=0;i<m_report->pageCount();++i){
m_report->pageAt(i)->setMagneticMovement(useMagnet);
}
}
void ReportDesignWidget::saveState(QSettings* settings)
{
settings->beginGroup("DesignerWidget");
settings->setValue("hGridStep",m_horizontalGridStep);
settings->setValue("vGridStep",m_verticalGridStep);
settings->setValue("defaultFont",m_defaultFont);
settings->setValue("useGrid",m_useGrid);
settings->endGroup();
}
void ReportDesignWidget::applySettings()
{
for (int i=0;i<m_report->pageCount();++i){
m_report->pageAt(i)->pageItem()->setFont(m_defaultFont);
}
applyUseGrid();
}
void ReportDesignWidget::loadState(QSettings* settings)
{
settings->beginGroup("DesignerWidget");
QVariant v = settings->value("hGridStep");
if (v.isValid()){
m_horizontalGridStep = v.toInt();
}
v = settings->value("vGridStep");
if (v.isValid()){
m_verticalGridStep = v.toInt();
}
v = settings->value("defaultFont");
if (v.isValid()){
m_defaultFont = v.value<QFont>();
}
v = settings->value("useGrid");
if (v.isValid()){
m_useGrid = v.toBool();
}
settings->endGroup();
applySettings();
}
void ReportDesignWidget::createTabs(){
for (int i = 0; i<m_report->pageCount();++i){
QGraphicsView* view = new QGraphicsView(qobject_cast<QWidget*>(this));
view->setBackgroundBrush(QBrush(Qt::gray));
view->setFrameShape(QFrame::NoFrame);
view->setScene(m_report->pageAt(i));
foreach(QGraphicsItem* item, m_report->pageAt(i)->selectedItems()){
item->setSelected(false);
}
view->centerOn(0,0);
view->scale(0.5,0.5);
connectPage(m_report->pageAt(i));
m_tabWidget->addTab(view,QIcon(),tr("Page")+QString::number(i+1));
}
m_scriptEditor = new QTextEdit(this);
m_tabWidget->addTab(m_scriptEditor,QIcon(),tr("Script"));
m_tabWidget->setCurrentIndex(0);
}
ReportDesignWidget::~ReportDesignWidget()
{
delete m_zoomer;
}
QGraphicsView* ReportDesignWidget::activeView(){
return dynamic_cast<QGraphicsView*>(m_tabWidget->currentWidget());
}
void ReportDesignWidget::connectPage(PageDesignIntf *page)
{
connect(page,SIGNAL(itemInserted(LimeReport::PageDesignIntf*,QPointF,QString)),this,SIGNAL(itemInserted(LimeReport::PageDesignIntf*,QPointF,QString)));
connect(page,SIGNAL(itemInsertCanceled(QString)),this,SIGNAL(itemInsertCanceled(QString)));
connect(page,SIGNAL(itemPropertyChanged(QString,QString,QVariant,QVariant)),this,SIGNAL(itemPropertyChanged(QString,QString,QVariant,QVariant)));
connect(page,SIGNAL(selectionChanged()),this,SLOT(slotSelectionChanged()));
connect(page,SIGNAL(insertModeStarted()),this,SIGNAL(insertModeStarted()));
connect(page,SIGNAL(commandHistoryChanged()),this,SIGNAL(commandHistoryChanged()));
connect(page,SIGNAL(sceneRectChanged(QRectF)),this,SLOT(slotSceneRectChanged(QRectF)));
connect(page,SIGNAL(itemAdded(LimeReport::PageDesignIntf*,LimeReport::BaseDesignIntf*)),
this, SIGNAL(itemAdded(LimeReport::PageDesignIntf*,LimeReport::BaseDesignIntf*)));
connect(page,SIGNAL(itemRemoved(LimeReport::PageDesignIntf*,LimeReport::BaseDesignIntf*)),
this,SIGNAL(itemDeleted(LimeReport::PageDesignIntf*,LimeReport::BaseDesignIntf*)));
connect(page,SIGNAL(bandAdded(LimeReport::PageDesignIntf*,LimeReport::BandDesignIntf*)),
this, SIGNAL(bandAdded(LimeReport::PageDesignIntf*,LimeReport::BandDesignIntf*)));
connect(page, SIGNAL(bandRemoved(LimeReport::PageDesignIntf*,LimeReport::BandDesignIntf*)),
this, SIGNAL(bandDeleted(LimeReport::PageDesignIntf*,LimeReport::BandDesignIntf*)));
connect(page, SIGNAL(pageUpdateFinished(LimeReport::PageDesignIntf*)),
this, SIGNAL(activePageUpdated(LimeReport::PageDesignIntf*)));
//activeView()->centerOn(0,0);
emit activePageChanged();
}
void ReportDesignWidget::createStartPage()
{
m_report->appendPage("page1");
createTabs();
}
void ReportDesignWidget::removeDatasource(const QString &datasourceName)
{
if (m_report->dataManager())
m_report->dataManager()->removeDatasource(datasourceName);
}
void ReportDesignWidget::addBand(const QString &bandType)
{
if (activePage())
activePage()->addBand(bandType);
}
void ReportDesignWidget::addBand(BandDesignIntf::BandsType bandType)
{
if (activePage())
activePage()->addBand(bandType);
}
void ReportDesignWidget::startInsertMode(const QString &itemType)
{
if (activePage())
activePage()->startInsertMode(itemType);
}
void ReportDesignWidget::startEditMode()
{
if (activePage())
activePage()->startEditMode();
}
PageDesignIntf * ReportDesignWidget::activePage()
{
if (activeView())
return qobject_cast<PageDesignIntf*>(activeView()->scene());
return 0;
}
QList<QGraphicsItem *> ReportDesignWidget::selectedItems(){
return activePage()->selectedItems();
}
void ReportDesignWidget::deleteItem(QGraphicsItem *item){
activePage()->removeReportItem(dynamic_cast<BaseDesignIntf*>(item));
}
void ReportDesignWidget::deleteSelectedItems(){
activePage()->deleteSelected();
}
QStringList ReportDesignWidget::datasourcesNames(){
return m_report->dataManager()->dataSourceNames();
}
void ReportDesignWidget::slotItemSelected(BaseDesignIntf *item){
emit itemSelected(item);
}
void ReportDesignWidget::saveToFile(const QString &fileName){
m_report->scriptContext()->setInitScript(m_scriptEditor->toPlainText());
if (m_report->saveToFile(fileName)) {
m_report->emitSaveFinished();
}
}
bool ReportDesignWidget::save()
{
m_report->scriptContext()->setInitScript(m_scriptEditor->toPlainText());
if (!m_report->reportFileName().isEmpty()){
if (m_report->saveToFile()){
m_report->emitSaveFinished();
return true;
}
}
else {
m_report->emitSaveReport();
if (m_report->isSaved()) {
m_report->emitSaveFinished();
return true;
}
if (m_report->saveToFile(QFileDialog::getSaveFileName(this,tr("Report file name"),"","Report files (*.lrxml);; All files (*)"))){
m_report->emitSaveFinished();
return true;
};
}
return false;
}
bool ReportDesignWidget::loadFromFile(const QString &fileName)
{
if (m_report->loadFromFile(fileName,false)){
createTabs();
//connectPage(m_report->pageAt(0));
m_scriptEditor->setPlainText(m_report->scriptContext()->initScript());
emit loaded();
return true;
} else {
QMessageBox::critical(this,tr("Error"),tr("Wrong file format"));
return false;
}
}
void ReportDesignWidget::scale(qreal sx, qreal sy)
{
//m_view->scale(sx,sy);
if (activeView()) activeView()->scale(sx,sy);
}
QString ReportDesignWidget::reportFileName()
{
if (m_report)
return m_report->reportFileName();
return QString();
}
bool ReportDesignWidget::isNeedToSave()
{
if(m_report)
return m_report->isNeedToSave();
return false;
}
bool ReportDesignWidget::emitLoadReport()
{
return m_report->emitLoadReport();
}
void ReportDesignWidget::updateSize()
{
if (activePage())
activePage()->slotUpdateItemSize();
}
void ReportDesignWidget::undo()
{
if (activePage())
activePage()->undo();
}
void ReportDesignWidget::redo()
{
if (activePage())
activePage()->redo();
}
void ReportDesignWidget::copy()
{
if (activePage())
activePage()->copy();
}
void ReportDesignWidget::paste()
{
if (activePage())
activePage()->paste();
}
void ReportDesignWidget::cut()
{
if (activePage())
activePage()->cut();
}
void ReportDesignWidget::brinToFront()
{
if (activePage())
activePage()->bringToFront();
}
void ReportDesignWidget::sendToBack()
{
if (activePage())
activePage()->sendToBack();
}
void ReportDesignWidget::alignToLeft()
{
if (activePage())
activePage()->alignToLeft();
}
void ReportDesignWidget::alignToRight()
{
if (activePage())
activePage()->alignToRigth();
}
void ReportDesignWidget::alignToVCenter()
{
if (activePage())
activePage()->alignToVCenter();
}
void ReportDesignWidget::alignToTop()
{
if (activePage())
activePage()->alignToTop();
}
void ReportDesignWidget::alignToBottom()
{
if (activePage())
activePage()->alignToBottom();
}
void ReportDesignWidget::alignToHCenter()
{
if (activePage())
activePage()->alignToHCenter();
}
void ReportDesignWidget::sameHeight()
{
if (activePage())
activePage()->sameHeight();
}
void ReportDesignWidget::sameWidth()
{
if (activePage())
activePage()->sameWidth();
}
void ReportDesignWidget::editLayoutMode(bool value)
{
if (value ){
activePage()->pageItem()->setItemMode(activePage()->pageItem()->itemMode() | LayoutEditMode);
} else if (activePage()->pageItem()->itemMode() & LayoutEditMode){
activePage()->pageItem()->setItemMode(activePage()->pageItem()->itemMode() ^ LayoutEditMode);
}
}
void ReportDesignWidget::addHLayout()
{
if (activePage())
activePage()->addHLayout();
}
void ReportDesignWidget::setFont(const QFont& font)
{
if (activePage())
activePage()->setFont(font);
}
void ReportDesignWidget::setTextAlign(const bool& horizontalAlign, const Qt::AlignmentFlag& alignment)
{
if (activePage())
activePage()->changeSelectedGrpoupTextAlignPropperty(horizontalAlign, alignment);
}
void ReportDesignWidget::setBorders(const BaseDesignIntf::BorderLines& borders)
{
if (activePage())
activePage()->setBorders(borders);
}
void ReportDesignWidget::previewReport()
{
report()->scriptContext()->setInitScript(m_scriptEditor->toPlainText());
report()->previewReport();
}
void ReportDesignWidget::printReport()
{
report()->scriptContext()->setInitScript(m_scriptEditor->toPlainText());
setCursor(Qt::WaitCursor);
report()->printReport();
setCursor(Qt::ArrowCursor);
}
void ReportDesignWidget::addPage()
{
QGraphicsView* view = new QGraphicsView(qobject_cast<QWidget*>(this));
view->setBackgroundBrush(QBrush(Qt::gray));
view->setFrameShape(QFrame::NoFrame);
PageDesignIntf* page = m_report->appendPage("page"+QString::number(m_report->pageCount()+1));
view->setScene(page);
int index = m_report->pageCount()-1;
m_tabWidget->insertTab(index,view,QIcon(),tr("Page")+QString::number(m_report->pageCount()));
m_tabWidget->setCurrentIndex(index);
connectPage(page);
view->scale(0.5,0.5);
view->centerOn(0,0);
applyUseGrid();
emit pageAdded(page);
}
void ReportDesignWidget::deleteCurrentPage()
{
if (m_report->pageCount()>1){
QGraphicsView* view = dynamic_cast<QGraphicsView*>(m_tabWidget->currentWidget());
if (view){
PageDesignIntf* page = dynamic_cast<PageDesignIntf*>(view->scene());
if (page){
if (m_report->deletePage(page)){
int index = m_tabWidget->currentIndex();
m_tabWidget->removeTab(m_tabWidget->currentIndex());
if (index>0) m_tabWidget->setCurrentIndex(index-1);
emit pageDeleted();
}
}
}
}
}
void ReportDesignWidget::editSetting()
{
SettingDialog setting(this);
setting.setVerticalGridStep(m_verticalGridStep);
setting.setHorizontalGridStep(m_horizontalGridStep);
setting.setDefaultFont(m_defaultFont);
setting.setSuppressAbsentFieldsAndVarsWarnings(m_report->suppressFieldAndVarError());
if (setting.exec()){
m_horizontalGridStep = setting.horizontalGridStep();
m_verticalGridStep = setting.verticalGridStep();
m_defaultFont = setting.defaultFont();
m_report->setSuppressFieldAndVarError(setting.suppressAbsentFieldsAndVarsWarnings());
applySettings();
}
}
void ReportDesignWidget::applyUseGrid()
{
int hGridStep = m_useGrid?m_horizontalGridStep:2;
int vGridStep = m_useGrid?m_verticalGridStep:2;
for(int i=0;i<m_report->pageCount();++i){
m_report->pageAt(i)->setVerticalGridStep(hGridStep);
m_report->pageAt(i)->setHorizontalGridStep(vGridStep);
}
}
void ReportDesignWidget::setUseGrid(bool value)
{
m_useGrid = value;
applyUseGrid();
}
bool ReportDesignWidget::isCanUndo()
{
if (activePage())
return activePage()->isCanUndo();
return false;
}
bool ReportDesignWidget::isCanRedo()
{
if (activePage())
return activePage()->isCanRedo();
return false;
}
void ReportDesignWidget::slotSelectionChanged()
{
QGraphicsScene* page=dynamic_cast<QGraphicsScene*>(sender());
if (page){
if (page->selectedItems().count()==1){
BaseDesignIntf* item = dynamic_cast<BaseDesignIntf*>(page->selectedItems().at(0));
if (item)
emit (itemSelected(item));
}
else if (page->selectedItems().count()>1){
emit (multiItemSelected());
}
}
}
DataSourceManager* ReportDesignWidget::dataManager()
{
return m_report->dataManager();
}
ScriptEngineManager* ReportDesignWidget::scriptManager()
{
return m_report->scriptManager();
}
ScriptEngineContext*ReportDesignWidget::scriptContext()
{
return m_report->scriptContext();
}
void ReportDesignWidget::slotPagesLoadFinished()
{
applySettings();
//setActivePage(m_report->pageAt(0));
emit loaded();
}
void ReportDesignWidget::slotDatasourceCollectionLoaded(const QString & /*collectionName*/)
{
}
void ReportDesignWidget::slotSceneRectChanged(QRectF)
{
if (activeView()) activeView()->centerOn(0,0);
}
void ReportDesignWidget::slotCurrentTabChanged(int index)
{
QGraphicsView* view = dynamic_cast<QGraphicsView*>(m_tabWidget->widget(index));
if (view) {
if (view->scene()){
foreach (QGraphicsItem* item, view->scene()->selectedItems()) item->setSelected(false);
}
m_zoomer->setView(view);
}
emit activePageChanged();
}
bool ReportDesignWidget::eventFilter(QObject *target, QEvent *event)
{
if (event->type() == QEvent::Wheel){
QWheelEvent* we = dynamic_cast<QWheelEvent*>(event);
if (QApplication::keyboardModifiers()==Qt::ControlModifier){
if(we->delta()<0) scale(1.2,1.2);
else scale(1/1.2,1/1.2);
}
}
return QWidget::eventFilter(target,event);
}
void ReportDesignWidget::clear()
{
m_report->clearReport();
m_tabWidget->clear();
m_report->setReportFileName("");
m_report->scriptContext()->setInitScript("");
m_scriptEditor->setPlainText("");
}
}
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