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// This module implements the QsciPrinter class.
//
// Copyright (c) 2015 Riverbank Computing Limited <info@riverbankcomputing.com>
//
// This file is part of QScintilla.
//
// This file may be used under the terms of the GNU General Public License
// version 3.0 as published by the Free Software Foundation and appearing in
// the file LICENSE included in the packaging of this file. Please review the
// following information to ensure the GNU General Public License version 3.0
// requirements will be met: http://www.gnu.org/copyleft/gpl.html.
//
// If you do not wish to use this file under the terms of the GPL version 3.0
// then you may purchase a commercial license. For more information contact
// info@riverbankcomputing.com.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#include "Qsci/qsciprinter.h"
#if !defined(QT_NO_PRINTER)
#include <QPrinter>
#include <QPainter>
#include <QStack>
#include "Qsci/qsciscintillabase.h"
// The ctor.
QsciPrinter::QsciPrinter(QPrinter::PrinterMode mode)
: QPrinter(mode), mag(0), wrap(QsciScintilla::WrapWord)
{
}
// The dtor.
QsciPrinter::~QsciPrinter()
{
}
// Format the page before the document text is drawn.
void QsciPrinter::formatPage(QPainter &, bool, QRect &, int)
{
}
// Print a range of lines to a printer.
int QsciPrinter::printRange(QsciScintillaBase *qsb, int from, int to)
{
// Sanity check.
if (!qsb)
return false;
// Setup the printing area.
QRect def_area;
def_area.setX(0);
def_area.setY(0);
def_area.setWidth(width());
def_area.setHeight(height());
// Get the page range.
int pgFrom, pgTo;
pgFrom = fromPage();
pgTo = toPage();
// Find the position range.
long startPos, endPos;
endPos = qsb->SendScintilla(QsciScintillaBase::SCI_GETLENGTH);
startPos = (from > 0 ? qsb -> SendScintilla(QsciScintillaBase::SCI_POSITIONFROMLINE,from) : 0);
if (to >= 0)
{
long toPos = qsb -> SendScintilla(QsciScintillaBase::SCI_POSITIONFROMLINE,to + 1);
if (endPos > toPos)
endPos = toPos;
}
if (startPos >= endPos)
return false;
QPainter painter(this);
bool reverse = (pageOrder() == LastPageFirst);
bool needNewPage = false;
qsb -> SendScintilla(QsciScintillaBase::SCI_SETPRINTMAGNIFICATION,mag);
qsb -> SendScintilla(QsciScintillaBase::SCI_SETPRINTWRAPMODE,wrap);
for (int i = 1; i <= numCopies(); ++i)
{
// If we are printing in reverse page order then remember the start
// position of each page.
QStack<long> pageStarts;
int currPage = 1;
long pos = startPos;
while (pos < endPos)
{
// See if we have finished the requested page range.
if (pgTo > 0 && pgTo < currPage)
break;
// See if we are going to render this page, or just see how much
// would fit onto it.
bool render = false;
if (pgFrom == 0 || pgFrom <= currPage)
{
if (reverse)
pageStarts.push(pos);
else
{
render = true;
if (needNewPage)
{
if (!newPage())
return false;
}
else
needNewPage = true;
}
}
QRect area = def_area;
formatPage(painter,render,area,currPage);
pos = qsb -> SendScintilla(QsciScintillaBase::SCI_FORMATRANGE,render,&painter,area,pos,endPos);
++currPage;
}
// All done if we are printing in normal page order.
if (!reverse)
continue;
// Now go through each page on the stack and really print it.
while (!pageStarts.isEmpty())
{
--currPage;
long ePos = pos;
pos = pageStarts.pop();
if (needNewPage)
{
if (!newPage())
return false;
}
else
needNewPage = true;
QRect area = def_area;
formatPage(painter,true,area,currPage);
qsb->SendScintilla(QsciScintillaBase::SCI_FORMATRANGE,true,&painter,area,pos,ePos);
}
}
return true;
}
// Set the print magnification in points.
void QsciPrinter::setMagnification(int magnification)
{
mag = magnification;
}
// Set the line wrap mode.
void QsciPrinter::setWrapMode(QsciScintilla::WrapMode wmode)
{
wrap = wmode;
}
#endif
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