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Printing: add support for printing on any page size

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Make page size and orientation customizable. The user can select
any page size and orientation and then the rendering resolution will
be calculated based on the selected preferences and the printer DPI.
The HTML templates must be responsive, also the font-size must be based
on the viewport width so that we don't lose quality.

Signed-off-by: Gehad elrobey <gehadelrobey@gmail.com>
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
This commit is contained in:
Gehad elrobey 2015-06-17 17:05:14 +02:00 • committed by Lubomir I. Ivanov
parent 75263e3d2c
commit 554e64c43f
2 changed files with 13 additions and 17 deletions
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26
printer.cpp
View file

@ -6,20 +6,10 @@
#include <QWebElementCollection>
#include <QWebElement>
#define A4_300DPI_WIDTH 2480
#define A4_300DPI_HIGHT 3508
Printer::Printer(QPrinter *printer, print_options *printOptions)
{
this->printer = printer;
this->printOptions = printOptions;
//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;
}
@ -51,12 +41,10 @@ void Printer::render()
// render the Qwebview
QPainter painter;
QSize size(A4_300DPI_WIDTH, A4_300DPI_HIGHT);
QRect viewPort(0, 0, size.width(), size.height());
QRect viewPort(0, 0, pageSize.width(), pageSize.height());
painter.begin(printer);
painter.setRenderHint(QPainter::Antialiasing);
painter.setRenderHint(QPainter::SmoothPixmapTransform);
webView->page()->setViewportSize(size);
int divesPerPage;
switch (printOptions->p_template) {
@ -91,8 +79,8 @@ void Printer::render()
}
// scroll the webview to the next page
webView->page()->mainFrame()->scroll(0, size.height());
viewPort.adjust(0, size.height(), 0, size.height());
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));
@ -123,8 +111,14 @@ void Printer::templateProgessUpdated(int value)
void Printer::print()
{
TemplateLayout t(printOptions);
connect(&t, SIGNAL(progressUpdated(int)), this, SLOT(templateProgessUpdated(int)));
webView = new QWebView();
connect(&t, SIGNAL(progressUpdated(int)), this, SLOT(templateProgessUpdated(int)));
dpi = printer->resolution();
//rendering resolution = selected paper size in inchs * printer dpi
pageSize.setHeight(printer->pageLayout().paintRect(QPageLayout::Inch).height() * dpi);
pageSize.setWidth(printer->pageLayout().paintRect(QPageLayout::Inch).width() * dpi);
webView->page()->setViewportSize(pageSize);
webView->setHtml(t.generate());
render();
}

4
printer.h
View file

@ -16,9 +16,11 @@ private:
QPrinter *printer;
QWebView *webView;
print_options *printOptions;
QSize pageSize;
int done;
int dpi;
void render();
void putProfileImage(QRect box, QRect viewPort, QPainter *painter, struct dive *dive, QPointer<ProfileWidget2> profile);
int done;
private slots:
void templateProgessUpdated(int value);