I implement the ability to print reports in my project. Reports are presented as HTML content. There is an instance of QPrinter with custom fields:
printer = new QPrinter(QPrinter::ScreenResolution);
qreal topMargin = 15;
qreal bottomMargin = 15;
qreal leftMargin = 20;
qreal rightMargin = 15;
QPrinter::Unit units = QPrinter::Millimeter;
printer->setPageMargins(leftMargin,topMargin,rightMargin,bottomMargin,units);
When printing in PDF, everything is fine
view->printToPdf([=] (QByteArray bd) {
//Запись файла
}, printer->pageLayout());
But when printing with the "print" function, the fields are set incorrectly:
QWebEnginePage *page = new QWebEnginePage;
page->setHtml(currentForPrint);
connect(page, &QWebEnginePage::loadFinished, [page, printer] (bool ok) {
if (!ok) {
qDebug() << "error"; return;
}
page->print(printer, [=] (bool ok) {
if (ok)
qDebug() << "success";
else
qDebug() << "error 2";
});
});
image
Qt Version - 5.9.3.
This is a bug in WebEngine. I have reported it and will fix it as soon as it's possible. As a workaround you could enable full page printing in your QPrinter:
printer->setFullPage(true);
This works for me.
Related
i want get the current text of a QComboBox edited.
QString nome = ui->taxas_existentes->currentText();
I have this, but if the initial text was "Test" and i change to "Test1", the variable "nome" will have "Test" as value instead of "Test1"...
Edit:
I've this, then i click on icon of edit
I change the name "Teste" to "Teste1" and i click on green icone
Then, after i clicked on green icone, i have this code:
QString nome = ui->taxas_existentes->currentText();
The variable nome have a value of "Teste" instead of "Teste1"...
edit2:
void WidgetDefinicoes::on_editar_taxa_clicked()
{
GereTaxa gereTaxas = GereTaxa();
if(ui->taxas_existentes->isEditable()) {
ui->taxas_existentes->setEditable(false);
QString nome = ui->taxas_existentes->currentText();
if(!nome.isEmpty()){
GereTaxa gereTaxa = GereTaxa();
int idTaxa = gereTaxas.obtemId(taxas.at(0)->getNome());
if(nome == taxas.at(0)->getNome()) {
Taxa * taxa = new Taxa(idTaxa, taxaInt, nome);
qDebug() << taxa->getTaxa();
qDebug() << taxa->getNome();
if(gereTaxa.editTaxa(* taxa) == 1) {
QMessageBox::information(this,tr("SalesQ"),tr("A taxa foi alterada com sucesso!"));
} else {
QMessageBox::warning(this,tr("SalesQ"),tr("Ocorreu um erro a alterar a taxa!"));
}
}
}
}
Found the error!
ui->taxas_existentes->setEditable(false);
Must be after of
QString nome = ui->taxas_existentes->currentText();
And not before
I am converting some code from using QWidget to QOpenGLWidget, I want to use double buffering to render the widget, so far:
void clsElevStrip::initializeGL() {
qDebug() << "clsElevStrip::initializeGL()";
initializeOpenGLFunctions();
//Get the openGL context
mpobjContext = context();
if ( mpobjContext != NULL ) {
//Setup surface
mobjFormat.setDepthBufferSize(24);
mobjFormat.setSamples(4);
mobjFormat.setVersion(3, 0);
mobjFormat.setProfile(QSurfaceFormat::NoProfile);
mobjFormat.setSwapBehavior(QSurfaceFormat::DoubleBuffer);
int intSB = (int)mobjFormat.swapBehavior();
qDebug() << "swapBehavour as set-up in format: " << QString::number(intSB);
mpobjContext->setFormat(mobjFormat);
intSB = (int)mpobjContext->format().swapBehavior();
qDebug() << "swapBehavour as set-up in context: " << QString::number(intSB);
}
}
I can see in the debugger that intSB is 2 when checking swap behaviour from the format, but when I check intSB as set in the context it is 0, not 2?
As a result of this anything I render to the context is visible.
Resolved:
I modified the code, adding
mpobjContext->create();
After:
mpobjContext->setFormat(mobjFormat);
Now it works!
I have a QTreeWidget in which each of its items has a QComboBox in a column. I have connected it to a slot with a QSignalMapper, and I'm successfully retrieving both the item and the index in the combobox when it is triggered. I did it like this:
foreach(Workplace *wp, allWorkplaces){
QTreeWidgetItem *workplaceItem = new QTreeWidgetItem;
workplaceItem->setText(0, wp->workplaceName());
workplaceItem->setText(1, wp->workplaceDescription());
myWorkplaceUi->treeWidget->addTopLevelItem(workplaceItem);
QComboBox *combo = new QComboBox();
combo->addItems(allShiftModels);
combo->setAutoFillBackground(true);
ShiftModel *shiftModel = qobject_cast<ShiftModel *>(wp->usedShiftModel);
myWorkplaceUi->treeWidget->setItemWidget(workplaceItem,2, combo);
if(shiftModel && !shiftModel->shiftModelName().isEmpty()){
qDebug()<<"after the cast: "<< shiftModel->shiftModelName();
combo->setCurrentIndex(combo->findText(shiftModel->shiftModelName(), Qt::MatchExactly));
}else{
combo->setCurrentIndex(combo->findText("None", Qt::MatchExactly));
}
connect(combo, SIGNAL(currentIndexChanged(int)), signalMapper, SLOT(map()));
signalMapper->setMapping(combo, QString("%1").arg(wp->workplaceName()));
}
connect(signalMapper, SIGNAL(mapped(const QString &)),this, SLOT(changed(const QString &)));
My objective is, after retrieving both the Workplace and the ShiftModel, to update them in the instances of my already created Workplaces. So, basically, I try to find the Workplace and the ShiftModel that were selected, because depending on the ShiftModel selected, I will change a pointer to the ShiftModel in the Workplace class:
class Workplace : public QObject
{
Q_OBJECT
public:
(...)
ShiftModel *usedShiftModel;
(...)
}
And the changed slot:
void workplacesdialog::changed(QString position){
QList<Workplace* > allWorkplaces = this->myProject->listMyWorkplaces();
QList<ShiftModel*> allShiftModels = this->myProject->myFactory->listShiftModels();
foreach(Workplace* workplace, allWorkplaces){
foreach(ShiftModel *shiftmodel, allShiftModels){
qDebug() <<"workplace:"<< workplace->workplaceName();
qDebug() <<"shiftmodel:"<< shiftmodel->shiftModelName();
QString wp = position;
QTreeWidgetItem* item=(QTreeWidgetItem*)myWorkplaceUi->treeWidget->findItems(wp,Qt::MatchExactly,0).at(0);
QComboBox *combo = (QComboBox*)myWorkplaceUi->treeWidget->itemWidget(item,2);
if(combo && item){
QString sm = combo->currentText();
qDebug() << "selected shiftmodel "<< sm << " on workplace "<< wp;
if(workplace->workplaceName()==wp && shiftmodel->shiftModelName()==sm){
workplace->usedShiftModel = shiftmodel;
break;
}
else{
workplace->usedShiftModel = 0;
return;
}
}else{
qDebug() << "cast failed!";
return;
}
}
}
}
So, my problem with this is, when I click one of the comboboxes, successfully retrieve both the item and index selected, but then, when I try to traverse them with the two foreach loops in the slot, it does not work as I expected. I hoped that every time I clicked on an index in one of the comboboxes, this would be called, and it is. Although, for some reason, the method I'm using to match what the user selected with what was already instatiated doesn't work.
Also, it looks like it only hits both the 1st workplace on the allWorkplaces list as well as the 1st shiftmodel on the ShiftModels list, and this is my problem.
If anyone knows how to fix this or has any ideas to share, please let me know. Thank you.
The problem is this:
if(workplace->workplaceName()==wp && shiftmodel->shiftModelName()==sm){
workplace->usedShiftModel = shiftmodel;
break;
}
else{
workplace->usedShiftModel = 0;
return;
}
If either the workplace name does not match, or the shift model name does not match, the relation between the work place and its currently linked shift model is removed and your function returns.
I could restructure the two for-loops for you, but there is an easier and less error-prone way:
Note: I marked some code paths with "TODO" which I skipped due to lack of time. You should be able to figure them out yourself though.
// Set up hashes for quick lookup
QHash< QString, Workplace* > workplaceHash;
QList<Workplace* > allWorkplaces = this->myProject->listMyWorkplaces();
foreach( Workplace* workplace, allWorkplaces )
{
workplaceHash.insert( workplace, workplace->workplaceName() );
}
// TODO: Do a similar thing for the shift models here
// Find the selected workplace
if( !workplaceHash.contains( position ) )
{
// TODO: Error handling (An unknown/No workplace was selected)
return;
}
// else: A valid workplace was selected
Workplace* selectedWorkplace = workplaceHash.value( position );
// TODO: Retrieve the name of the shift model (stored in variable sm)
// Find the selected shiftmodel
if( !shiftplaceHash.contains( sm ) )
{
// No shift model was selected
selectedWorkplace->usedShiftModel= 0;
return;
}
// Else: Both work place and shift model were selected
Shiftplace* selectedShiftModel = shiftplaceHash.value( sm );
selectedWorkplace->usedShiftModel = selectedShiftModel;
A few ideas for refactoring:
You could maybe do the creation of the hashes outside of this method and store them in member variables. Just make sure that the hash is always updated when a workplace is added or removed.
You could make spotting errors easier by extracting parts of the code into separate methods, e.g. QString getSelectedShiftModelName() etc.
So, In the end I figured out my loops were really messed up... This is working now:
void workplacesdialog::changed(QString position){
QList<Workplace* > allWorkplaces = this->myProject->listMyWorkplaces();
QList<ShiftModel*> allShiftModels = this->myProject->myFactory->listShiftModels();
qDebug() << allWorkplaces.size() << " workplaces";
qDebug() << allShiftModels.size() << " ShiftModels";
QString wp = position;
QString sm;
QTreeWidgetItem* item=(QTreeWidgetItem*)myWorkplaceUi->treeWidget->findItems(wp,Qt::MatchExactly,0).at(0);
QComboBox *combo = (QComboBox*)myWorkplaceUi->treeWidget->itemWidget(item,2);
if(combo && item){
sm = combo->currentText();
qDebug() << "selected shiftmodel "<< sm << " on workplace "<< wp;
}else{
qDebug() << "cast failed!";
return;
}
foreach(Workplace* workplace, allWorkplaces){
foreach(ShiftModel *shiftmodel, allShiftModels){
qDebug() <<"workplace:"<< workplace->workplaceName();
qDebug() <<"shiftmodel:"<< shiftmodel->shiftModelName();
if(workplace->workplaceName()==wp && shiftmodel->shiftModelName()==sm){
qDebug() << "found match!: "<< wp << " >>>>> " << sm;
workplace->usedShiftModel = shiftmodel;
return;
}else if(workplace->workplaceName()==wp && sm=="None"){
qDebug() << "clear match: "<< wp << " >>>>> " << sm;
workplace->usedShiftModel = 0;
return;
}
}
}
}
I am loading data from xml executed by timer. xml is parsed and populated in entity object.
In a loop im taking the data from entity object and populate QCommandLinkButton's. and in the end a batch of buttons are set into the verticalLayout and then in scrollArea.
but every time data is loaded its appends to the old data. How can I empty the content of the srollArea before repopulating scrollArea.
MainWindow::methodExecudedByTimer(){
foreach(int i, map.keys()){
QCommandLinkButton* buttonEmail = new QCommandLinkButton(this);
Email em = map[i];
buttonEmail->setText(em.__toString());
ui->verticalLayout->addWidget(buttonEmail);
}
ui->scrollArea->setLayout(ui->verticalLayout);
}
you can use setWidget replace setLayout.and then new data coming,you can call takeWidget to remove old data.
MainWindow::methodExecudedByTimer(){
foreach(int i, map.keys()){
QCommandLinkButton* buttonEmail = new QCommandLinkButton(this);
Email em = map[i];
buttonEmail->setText(em.__toString());
ui->verticalLayout->addWidget(buttonEmail);
}
ui->scrollArea->takeWidget();
QWidget *widget = new QWidget();
QSize size = ui->scrollArea->size();
widget->setMinimumSize(size.width(),size.height());
widget->setLayout(ui->verticalLayout);
ui->scrollArea->setWidget(widget);
}
I found the answer in the depths of Internet.
before foreach i added this:
qDebug() << "check if layout filled";
if(ui->verticalLayout->count() > 0){
qDebug() << "empty layout";
QLayoutItem *item = NULL;
while ((item = ui->verticalLayout->takeAt(0)) != 0) {
delete item->widget();
}
}else{
// on app first run
qDebug() << "layout empty";
}
I've written a loop which adds some items to my QListWidget. Now I want them to have an icon from my qrc file. For this I would use a loop in which I add a unique icon to each item.
void Test::Query()
{
ui->listWidget_Available->clear();
QString CmdList[4] = {"kcmshell4 --list|grep -q kcm_grub2",
"kcmshell4 --list|grep -q kcm_networkmanagement",
"which pastebunz",
"[ -z $ink3_ver ]"};
QString NameList[4] = {"kcm_grub2",
"kcm_networkmanagement",
"pastebunz",
"Shellmenu"};
QString IconList[4] = {":/icons/icons/GNU.png",
":/icons/icons/networkmanager.png",
":/icons/icons/edit-paste.png",
":/icons/icons/menu.png"};
QIcon ItemIcon;
int iCntSize = sizeof(CmdList) / sizeof(CmdList[0]);
Next thing is to clear the List:
for(int iItem = 0; iItem < iCntSize; iItem++)
{
ui->listWidget_Available->addItem(NameList[iItem]);
ui->listWidget_Available->item(iItem)->setCheckState(Qt::PartiallyChecked);
}
Now the ugly part:
for(int iRow = 0; iRow < iCntSize; iRow++)
{
int BarValue = ui->progressBar->value();
ui->progressBar->setValue(BarValue+(100/iCntSize));
QString status = QString("Processing index %1 of %2. Name: %3").arg(iRow).arg(iCntSize).arg(NameList[iRow]);
qDebug() << status << (BarValue+25);
And here is my problem:
ItemIcon.addFile(IconList[iRow], QSize(), QIcon::Normal, QIcon::Off);
ui->listWidget_Available->item(iRow)->setIcon(ItemIcon); <--- how to do THIS?
How can I do this?
ui->textEdit_Informations->append("Searching for "+NameList[iRow]);
mProcess = new QProcess();
mProcess->start("/bin/bash", QStringList() << "-c" << QString(CmdList[iRow]));
mProcess->waitForFinished();
if ( mProcess->exitStatus() == QProcess::CrashExit )
{
ui->textEdit_Informations->setTextColor(Qt::red);
ui->textEdit_Informations->append("\t[FATAL]");
}
else if ( mProcess->exitCode() != 0 )
{
ui->textEdit_Informations->setTextColor(Qt::magenta);
ui->textEdit_Informations->append("\t[MISSED]");
ui->listWidget_Available->item(iRow)->setCheckState(Qt::Unchecked);
}
else if ( mProcess->exitCode() == 0 )
{
ui->textEdit_Informations->setTextColor(Qt::green);
ui->textEdit_Informations->append("\t[FOUND]");
ui->listWidget_Available->item(iRow)->setCheckState(Qt::Checked);
}
ui->textEdit_Informations->setTextColor(Qt::white);
}
}
Any suggestions?
You should use the constructor and a new QIcon each time instead of QIcon::addFile:
QIcon ItemIcon(IconList[iRow]);
ui->listWidget_Available->item(iRow)->setIcon(ItemIcon);
addFile would only be useful if you had a different image for each state of the item the icon is in (normal, activated, disabled, ...).