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#include "printer.h"
#include "templatelayout.h"
#include <QtWebKitWidgets>
#include <QPainter>
#include <QWebElementCollection>
#include <QWebElement>
Printer::Printer(QPaintDevice *paintDevice, print_options *printOptions, template_options *templateOptions, PrintMode printMode)
{
this->paintDevice = paintDevice;
this->printOptions = printOptions;
this->templateOptions = templateOptions;
this->printMode = printMode;
dpi = 0;
done = 0;
webView = new QWebView();
}
Printer::~Printer()
{
delete webView;
}
void Printer::putProfileImage(QRect profilePlaceholder, QRect viewPort, QPainter *painter, struct dive *dive, QPointer<ProfileWidget2> profile)
{
int x = profilePlaceholder.x() - viewPort.x();
int y = profilePlaceholder.y() - viewPort.y();
// use the placeHolder and the viewPort position to calculate the relative position of the dive profile.
QRect pos(x, y, profilePlaceholder.width(), profilePlaceholder.height());
profile->plotDive(dive, true);
if (!printOptions->color_selected) {
QImage image(pos.width(), pos.height(), QImage::Format_ARGB32);
QPainter imgPainter(&image);
imgPainter.setRenderHint(QPainter::Antialiasing);
imgPainter.setRenderHint(QPainter::SmoothPixmapTransform);
profile->render(&imgPainter, QRect(0, 0, pos.width(), pos.height()));
imgPainter.end();
// convert QImage to grayscale before rendering
for (int i = 0; i < image.height(); i++) {
QRgb *pixel = reinterpret_cast<QRgb *>(image.scanLine(i));
QRgb *end = pixel + image.width();
for (; pixel != end; pixel++) {
int gray_val = qGray(*pixel);
*pixel = QColor(gray_val, gray_val, gray_val).rgb();
}
}
painter->drawImage(pos, image);
} else {
profile->render(painter, pos);
}
}
void Printer::render(int Pages = 0)
{
// keep original preferences
QPointer<ProfileWidget2> profile = MainWindow::instance()->graphics();
int profileFrameStyle = profile->frameStyle();
int animationOriginal = prefs.animation_speed;
double fontScale = profile->getFontPrintScale();
double printFontScale = 1.0;
// apply printing settings to profile
profile->setFrameStyle(QFrame::NoFrame);
profile->setPrintMode(true, !printOptions->color_selected);
profile->setToolTipVisibile(false);
prefs.animation_speed = 0;
// render the Qwebview
QPainter painter;
QRect viewPort(0, 0, pageSize.width(), pageSize.height());
painter.begin(paintDevice);
painter.setRenderHint(QPainter::Antialiasing);
painter.setRenderHint(QPainter::SmoothPixmapTransform);
// get all refereces to diveprofile class in the Html template
QWebElementCollection collection = webView->page()->mainFrame()->findAllElements(".diveprofile");
QSize originalSize = profile->size();
if (collection.count() > 0) {
printFontScale = (double)collection.at(0).geometry().size().height() / (double)profile->size().height();
profile->resize(collection.at(0).geometry().size());
}
profile->setFontPrintScale(printFontScale);
int elemNo = 0;
for (int i = 0; i < Pages; i++) {
// render the base Html template
webView->page()->mainFrame()->render(&painter, QWebFrame::ContentsLayer);
// render all the dive profiles in the current page
while (elemNo < collection.count() && collection.at(elemNo).geometry().y() < viewPort.y() + viewPort.height()) {
// dive id field should be dive_{{dive_no}} se we remove the first 5 characters
QString diveIdString = collection.at(elemNo).attribute("id");
int diveId = diveIdString.remove(0, 5).toInt(0, 10);
putProfileImage(collection.at(elemNo).geometry(), viewPort, &painter, get_dive_by_uniq_id(diveId), profile);
elemNo++;
}
// scroll the webview to the next page
webView->page()->mainFrame()->scroll(0, pageSize.height());
viewPort.adjust(0, pageSize.height(), 0, pageSize.height());
// rendering progress is 4/5 of total work
emit(progessUpdated((i * 80.0 / Pages) + done));
if (i < Pages - 1 && printMode == Printer::PRINT)
static_cast<QPrinter*>(paintDevice)->newPage();
}
painter.end();
// return profle settings
profile->setFrameStyle(profileFrameStyle);
profile->setPrintMode(false);
profile->setFontPrintScale(fontScale);
profile->setToolTipVisibile(true);
profile->resize(originalSize);
prefs.animation_speed = animationOriginal;
//replot the dive after returning the settings
profile->plotDive(0, true);
}
//value: ranges from 0 : 100 and shows the progress of the templating engine
void Printer::templateProgessUpdated(int value)
{
done = value / 5; //template progess if 1/5 of total work
emit progessUpdated(done);
}
void Printer::print()
{
// we can only print if "PRINT" mode is selected
if (printMode != Printer::PRINT) {
return;
}
QPrinter *printerPtr;
printerPtr = static_cast<QPrinter*>(paintDevice);
TemplateLayout t(printOptions, templateOptions);
connect(&t, SIGNAL(progressUpdated(int)), this, SLOT(templateProgessUpdated(int)));
dpi = printerPtr->resolution();
//rendering resolution = selected paper size in inchs * printer dpi
pageSize.setHeight(printerPtr->pageLayout().paintRect(QPageLayout::Inch).height() * dpi);
pageSize.setWidth(printerPtr->pageLayout().paintRect(QPageLayout::Inch).width() * dpi);
webView->page()->setViewportSize(pageSize);
webView->setHtml(t.generate());
if (printOptions->color_selected && printerPtr->colorMode()) {
printerPtr->setColorMode(QPrinter::Color);
} else {
printerPtr->setColorMode(QPrinter::GrayScale);
}
// apply user settings
int divesPerPage;
// get number of dives per page from data-numberofdives attribute in the body of the selected template
bool ok;
divesPerPage = webView->page()->mainFrame()->findFirstElement("body").attribute("data-numberofdives").toInt(&ok);
if (!ok) {
divesPerPage = 1; // print each dive in a single page if the attribute is missing or malformed
//TODO: show warning
}
int Pages;
if (divesPerPage == 0) {
Pages = ceil(webView->page()->mainFrame()->contentsSize().height() / (float)pageSize.height());
} else {
Pages = ceil(getTotalWork(printOptions) / (float)divesPerPage);
}
render(Pages);
}
void Printer::previewOnePage()
{
if (printMode == PREVIEW) {
TemplateLayout t(printOptions, templateOptions);
pageSize.setHeight(paintDevice->height());
pageSize.setWidth(paintDevice->width());
webView->page()->setViewportSize(pageSize);
webView->setHtml(t.generate());
// render only one page
render(1);
}
}
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