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Diffstat (limited to 'qt/qextscintillaprinter.cpp')
| -rw-r--r-- | qt/qextscintillaprinter.cpp | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/qt/qextscintillaprinter.cpp b/qt/qextscintillaprinter.cpp new file mode 100644 index 0000000..1aadb2d --- /dev/null +++ b/qt/qextscintillaprinter.cpp @@ -0,0 +1,186 @@ +// 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; +} |