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// This module implements the QextScintillaPrinter class.
//
// Copyright (c) 2006
// Riverbank Computing Limited <info@riverbankcomputing.co.uk>
//
// This file is part of QScintilla.
//
// This copy of QScintilla is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2, or (at your option) any
// later version.
//
// QScintilla is supplied 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 General Public License for more
// details.
//
// You should have received a copy of the GNU General Public License along with
// QScintilla; see the file LICENSE. If not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#include <qprinter.h>
#include <qpainter.h>
#include <qpaintdevicemetrics.h>
#include <qvaluestack.h>
#include "qextscintillaprinter.h"
#include "qextscintillabase.h"
// The ctor.
QextScintillaPrinter::QextScintillaPrinter(QPrinter::PrinterMode mode) :
QPrinter(mode), mag(0),
wrap(QextScintilla::WrapWord)
{
}
// The dtor.
QextScintillaPrinter::~QextScintillaPrinter()
{
}
// Format the page before the document text is drawn.
void QextScintillaPrinter::formatPage(QPainter &,bool,QRect &,int)
{
}
// Print a range of lines to a printer.
int QextScintillaPrinter::printRange(QextScintillaBase *qsb,int from,int to)
{
// Sanity check.
if (!qsb)
return FALSE;
// Setup the printing area.
QPaintDeviceMetrics metrics(this);
QRect def_area;
def_area.setX(0);
def_area.setY(0);
def_area.setWidth(metrics.width());
def_area.setHeight(metrics.height());
// Get the page range.
int pgFrom, pgTo;
pgFrom = fromPage();
pgTo = toPage();
// Find the position range.
long startPos, endPos;
endPos = qsb -> SendScintilla(QextScintillaBase::SCI_GETLENGTH);
startPos = (from > 0 ? qsb -> SendScintilla(QextScintillaBase::SCI_POSITIONFROMLINE,from) : 0);
if (to >= 0)
{
long toPos = qsb -> SendScintilla(QextScintillaBase::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(QextScintillaBase::SCI_SETPRINTMAGNIFICATION,mag);
qsb -> SendScintilla(QextScintillaBase::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.
QValueStack<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(QextScintillaBase::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(QextScintillaBase::SCI_FORMATRANGE,TRUE,&painter,area,pos,ePos);
}
}
return TRUE;
}
// Set the print magnification in points.
void QextScintillaPrinter::setMagnification(int magnification)
{
mag = magnification;
}
// Set the line wrap mode.
void QextScintillaPrinter::setWrapMode(QextScintilla::WrapMode wmode)
{
wrap = wmode;
}
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