subsurface/printer.cpp
Gehad elrobey cd30e11672 Printing: render the dive profile on top of QWebView
We render the dive profile over the QWebView to the QPainter. This helps
us not to save the SVG images to disk and then render them again to the
webview.

Signed-off-by: Gehad elrobey <gehadelrobey@gmail.com>
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
2015-06-19 21:41:56 +03:00

121 lines
3.7 KiB
C++

#include "printer.h"
#include "templatelayout.h"
#include <QtWebKitWidgets>
#include <QPainter>
#include <QWebElementCollection>
#include <QWebElement>
#define A4_300DPI_WIDTH 2480
#define A4_300DPI_HIGHT 3508
Printer::Printer(QPrinter *printer)
{
this->printer = printer;
//override these settings for now.
printer->setFullPage(true);
printer->setOrientation(QPrinter::Portrait);
printer->setPaperSize(QPrinter::A4);
printer->setPrintRange(QPrinter::AllPages);
printer->setResolution(300);
done = 0;
}
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);
profile->render(painter, pos);
}
void Printer::render()
{
QPointer<ProfileWidget2> profile = MainWindow::instance()->graphics();
// keep original preferences
int profileFrameStyle = profile->frameStyle();
int animationOriginal = prefs.animation_speed;
double fontScale = profile->getFontPrintScale();
// apply printing settings to profile
profile->setFrameStyle(QFrame::NoFrame);
profile->setPrintMode(true);
profile->setFontPrintScale(0.6);
profile->setToolTipVisibile(false);
prefs.animation_speed = 0;
// render the Qwebview
QPainter painter;
QSize size(A4_300DPI_WIDTH, A4_300DPI_HIGHT);
QRect viewPort(0, 0, size.width(), size.height());
painter.begin(printer);
painter.setRenderHint(QPainter::Antialiasing);
painter.setRenderHint(QPainter::SmoothPixmapTransform);
webView->page()->setViewportSize(size);
int Pages = ceil(getTotalWork() / 2.0);
// 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) {
profile->resize(collection.at(0).geometry().size());
}
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
int diveNo = collection.at(elemNo).attribute("id").remove(0, 5).toInt(0, 10);
putProfileImage(collection.at(elemNo).geometry(), viewPort, &painter, get_dive(diveNo - 1), profile);
elemNo++;
}
// scroll the webview to the next page
webView->page()->mainFrame()->scroll(0, size.height());
viewPort.adjust(0, size.height(), 0, size.height());
// rendering progress is 4/5 of total work
emit(progessUpdated((i * 80.0 / Pages) + done));
if (i < Pages - 1)
printer->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()
{
TemplateLayout t;
connect(&t, SIGNAL(progressUpdated(int)), this, SLOT(templateProgessUpdated(int)));
webView = new QWebView();
webView->setHtml(t.generate());
render();
}