QTableWidget，QTableView 打印demo

/* * Table View Print & Preview dialog * Copyright (C) 2004-2008 by Gordos Kund / QnD Co Bt. * * 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 2.1 of the License, or (at your option) any later version. * * 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * Please contact gordos.kund@gmail.com with any questions on this license. */ #include "tdpreviewdialog.h" #include <QtCore/QDebug> #include <QtGui/QTextDocument> #include <QtGui/QPageSetupDialog> #include <QtGui/QGraphicsTextItem> #include <QtGui/QHeaderView> #include <QtGui/QPainter> #include <QtCore/QTime> #include <QtGui/QPrintDialog> #include <QtCore/QRectF> TDPreviewDialog::TDPreviewDialog(QTableView *p_tableView, QPrinter * p_printer, QWidget *parent) : QDialog(parent) { //variables tableView=p_tableView; leftMargin=80; rightMargin=80; topMargin=40; bottomMargin=40; spacing=4; headerSize=60; footerSize=60; sceneZoomFactor=100; columnZoomFactor=0.65; gridMode=NoGrid; model= tableView->model(); //setup printer printer=p_printer; printer->setFullPage(true); switch (QLocale::system().country()) { case QLocale::AnyCountry: case QLocale::Canada: case QLocale::UnitedStates: case QLocale::UnitedStatesMinorOutlyingIslands: printer->setPageSize(QPrinter::Letter); break; default: printer->setPageSize(QPrinter::A4); break; } setHeaderText("Document"); footerText=trUtf8("Page: "); //get column widths for (int i=0; i<model->columnCount(); i++) { int colWidth=tableView->columnWidth(i); colSizes.append(QTextLength(QTextLength::FixedLength,colWidth)); } //title font titleFont=tableView->font(); titleFont.setPointSize(24); titleFont.setBold(false); titleFont.setUnderline(false); titleFmt =new QFontMetrics(titleFont); //header font headerFont=tableView->font(); headerFont.setBold(true); headerFont.setUnderline(true); headerFont.setPointSize(9); headerFmt =new QFontMetrics(headerFont); //normal font font=tableView->font(); headerFont.setPointSize(9); fmt =new QFontMetrics(font); QString date=QDate::currentDate().toString(QLocale().dateFormat()); QString time=QTime::currentTime().toString(QLocale().timeFormat(QLocale::ShortFormat)); headerStdText = date+" "+time; setupPage(); columnMultiplier=pageScene.width()/tableView->width()*columnZoomFactor; } //================================================================= int TDPreviewDialog::exec() { //GUI ui.setupUi(this); connect(ui.horizontalSlider, SIGNAL(valueChanged(int)), ui.pageSpinBox, SLOT(setValue(int))); connect(ui.prevToolButton, SIGNAL(clicked()), ui.pageSpinBox, SLOT(stepDown())); connect(ui.nextToolButton, SIGNAL(clicked()), ui.pageSpinBox, SLOT(stepUp())); ui.graphicsView->setScene(&pageScene); ui.graphicsView->ensureVisible(0,0,10,10); setupSpinBox(); on_pageSpinBox_valueChanged(1); return QDialog::exec(); } //================================================================= TDPreviewDialog::~TDPreviewDialog() {} //================================================================= void TDPreviewDialog::on_setupToolButton_clicked() { QPageSetupDialog *dialog; dialog = new QPageSetupDialog(printer, this); if (dialog->exec() == QDialog::Rejected) { return; } setupPage(); on_pageSpinBox_valueChanged(1); setupSpinBox(); } //================================================================= void TDPreviewDialog::on_zoomInToolButton_clicked() { ui.graphicsView->scale(1.5,1.5); } //================================================================= void TDPreviewDialog::on_zoomOutToolButton_clicked() { ui.graphicsView->scale(1 / 1.5, 1 / 1.5); } //================================================================= void TDPreviewDialog::on_pageSpinBox_valueChanged(int value) { paintPage(value); pageScene.addRect(0,0,pageScene.width(),pageScene.height(),QPen(Qt::black, 2.0)); } //================================================================= void TDPreviewDialog::setupSpinBox() { ui.pageSpinBox->setPrefix(QString::number(pages)+" / "); ui.pageSpinBox->setMaximum(pages); ui.horizontalSlider->setMaximum(pages); } //================================================================= void TDPreviewDialog::setupPage() { rowHeight=font.pointSize()+spacing; QRectF rect=printer->paperRect(); QRectF rectNew = QRectF(0,0,rect.width() / printer->logicalDpiX() * sceneZoomFactor, rect.height() / printer->logicalDpiY() * sceneZoomFactor); pageScene.setSceneRect(rectNew); //count lines lines = ((pageScene.height()-topMargin-bottomMargin-headerSize-footerSize)/rowHeight)-3; //count pages QAbstractItemModel *model= tableView->model(); int rowCount=model->rowCount(); double div = rowCount / lines; int modulo = rowCount % lines; if (modulo == 0 ) { pages = QVariant(div).toInt(); } else { div = div+1.0; pages = QVariant(div).toInt(); } } //================================================================= void TDPreviewDialog::setHeaderText(const QString &text) { headerText=text; } //================================================================= void TDPreviewDialog::print() { //printDialog printer->setFromTo(1,pages); printer->setOutputFormat(QPrinter::NativeFormat); printer->setOutputFileName(""); QPrintDialog dialog(printer, this); dialog.setWindowTitle("Print Document"); if (dialog.exec() == QDialog::Rejected) { return; } setupPage(); // get num copies int doccopies; int pagecopies; if (printer->collateCopies()) { doccopies = 1; pagecopies = printer->numCopies(); } else { doccopies = printer->numCopies(); pagecopies = 1; } // get page range int firstpage = printer->fromPage(); int lastpage = printer->toPage(); if (firstpage == 0 && lastpage == 0) { // all pages firstpage = 1; lastpage =pages; } // print order bool ascending = true; if (printer->pageOrder() == QPrinter::LastPageFirst) { int tmp = firstpage; firstpage = lastpage; lastpage = tmp; ascending = false; } // loop through and print pages QPainter painter(printer); for (int dc=0; dc<doccopies; dc++) { int pagenum = firstpage; while (true) { for (int pc=0; pc<pagecopies; pc++) { if (printer->printerState() == QPrinter::Aborted || printer->printerS