259 lines
9.1 KiB
C++
259 lines
9.1 KiB
C++
/************************************************************************
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**
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** @file vposter.cpp
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** @author Roman Telezhynskyi <dismine(at)gmail.com>
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** @date 11 4, 2015
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**
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** @brief
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** @copyright
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** This source code is part of the Valentine project, a pattern making
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** program, whose allow create and modeling patterns of clothing.
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** Copyright (C) 2015 Valentina project
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** <https://bitbucket.org/dismine/valentina> All Rights Reserved.
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**
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** Valentina is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** Valentina is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with Valentina. If not, see <http://www.gnu.org/licenses/>.
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**
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*************************************************************************/
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#include "vposter.h"
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#include <QPainter>
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#include <QPrinter>
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#if QT_VERSION < QT_VERSION_CHECK(5, 1, 0)
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# include "../vmisc/vmath.h"
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#else
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# include <QtMath>
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#endif
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#include "../vmisc/def.h"
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//---------------------------------------------------------------------------------------------------------------------
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VPoster::VPoster(const QPrinter *printer)
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:printer(printer), allowence(static_cast<quint32>(qRound(10./25.4*printer->resolution())))//1 cm
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{
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}
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//---------------------------------------------------------------------------------------------------------------------
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QVector<QImage> VPoster::Generate(const QImage &image, int page, int sheets) const
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{
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QVector<QImage> poster;
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if (printer == nullptr)
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{
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return poster;
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}
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const int rows = CountRows(image.rect().height());
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const int colomns = CountColomns(image.rect().width());
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for (int i=0; i < rows; i++)
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{
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for (int j=0; j< colomns; j++)
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{
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QImage img = Cut(i, j, image);
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img = Borders(rows, colomns, i, j, img, page, sheets);
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poster.append(img);
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}
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}
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return poster;
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}
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//---------------------------------------------------------------------------------------------------------------------
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int VPoster::CountRows(int height) const
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{
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const qreal imgLength = height;
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const qreal pageLength = PageRect().height();
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// Example
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// ― ―
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// * *
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// * *
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// * *
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// * * ―
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// ― ― *
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// * *
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// * *
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// * * ―
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// * ― *
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// — *
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// * *
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// * * ―
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// * ― *
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// * *
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// — *
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// * * ―
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// * ― * <-(2)
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// * + *
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// * + *
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// — + * ― <-(4)
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// ^ ^ ― *
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//(3) (1) *
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// *
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// *
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// ―
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const int pCount = qCeil(imgLength/pageLength);// Pages count without allowence (or allowence = 0) (3)
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// Calculate how many pages will be after using allowence.
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// We know start pages count. This number not enought because
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// each n-1 pages add (n-1)*allowence length to page (1).
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const qreal addionalLength = (pCount-1)*static_cast<int>(allowence);
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// Calculate additional length form pages that will cover this length (2).
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// In the end add page length (3).
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// Bottom page have mandatory border (4)
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return qCeil((addionalLength +
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qCeil(addionalLength/pageLength)*static_cast<int>(allowence) + static_cast<int>(allowence) +
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imgLength)/pageLength);
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}
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//---------------------------------------------------------------------------------------------------------------------
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int VPoster::CountColomns(int width) const
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{
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const qreal imgLength = width;
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const qreal pageLength = PageRect().width();
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// Example
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// |----|----|----|----| <- (3)
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// |----|+++++++++++++++
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// |----|+++++++++++
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// |----|+++++++
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// |----|+++ <- (1)
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// |----|
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// ^
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// (2)
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const int pCount = qCeil(imgLength/pageLength);// Pages count without allowence (or allowence = 0) (3)
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// Calculate how many pages will be after using allowence.
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// We know start pages count. This number not enought because
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// each n-1 pages add (n-1)*allowence length to page (1).
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const qreal addionalLength = (pCount-1)*static_cast<int>(allowence);
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// Calculate additional length form pages that will cover this length (2).
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// In the end add page length (3).
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return qCeil((addionalLength + qCeil(addionalLength/pageLength)*static_cast<int>(allowence) +
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imgLength)/pageLength);
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}
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//---------------------------------------------------------------------------------------------------------------------
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QImage VPoster::Cut(int i, int j, const QImage &image) const
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{
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const int x = j*PageRect().width() - j*static_cast<int>(allowence);
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const int y = i*PageRect().height() - i*static_cast<int>(allowence);
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SCASSERT(x <= image.rect().width());
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SCASSERT(y <= image.rect().height());
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QRect copyRect(x, y, PageRect().width(), PageRect().height());
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if (not image.rect().contains(copyRect))
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{
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// Create full page with white background
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QImage fullPage(copyRect.size(), image.format());
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fullPage.fill(Qt::white);
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// Real size that we can copy from image.
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// Because in areas beyond the image, pixels are set to 0 by copy() method.
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// For 32-bit RGB images, this means black.
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copyRect = image.rect().intersected(copyRect);
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QPainter painter(&fullPage);
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painter.drawImage(QPointF(), image.copy( copyRect));
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painter.end();
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return fullPage;
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}
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else
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{
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return image.copy(copyRect);
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}
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}
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//---------------------------------------------------------------------------------------------------------------------
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QImage VPoster::Borders(int rows, int colomns, int i, int j, QImage &image, int page, int sheets) const
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{
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QPainter painter(&image);
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QPen pen = QPen(Qt::NoBrush, 1, Qt::DashLine);
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pen.setColor(Qt::black);
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painter.setPen(pen);
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if (j != 0 && PageRect().x() > 0)
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{// Left border
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painter.drawLine(QLine(0, 0, 0, image.rect().height()));
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painter.drawImage(QPoint(0, image.rect().height()-static_cast<int>(allowence)),
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QImage("://scissors_vertical.png"));
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}
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if (j != colomns-1)
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{// Right border
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painter.drawLine(QLine(image.rect().width()-static_cast<int>(allowence), 0,
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image.rect().width()-static_cast<int>(allowence), image.rect().height()));
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}
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if (i != 0 && PageRect().y() > 0)
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{// Top border
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painter.drawLine(QLine(0, 0, image.rect().width(), 0));
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painter.drawImage(QPoint(image.rect().width()-static_cast<int>(allowence), 0),
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QImage("://scissors_horizontal.png"));
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}
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if (rows*colomns > 1)
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{ // Don't show bottom border if only one page need
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// Bottom border (mandatory)
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painter.drawLine(QLine(0, image.rect().height()-static_cast<int>(allowence),
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image.rect().width(), image.rect().height()-static_cast<int>(allowence)));
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if (i == rows-1)
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{
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painter.drawImage(QPoint(image.rect().width()-static_cast<int>(allowence),
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image.rect().height()-static_cast<int>(allowence)),
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QImage("://scissors_horizontal.png"));
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}
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}
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// Labels
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const int layoutX = 15;
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const int layoutY = 5;
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QRect labels(layoutX, image.rect().height()-static_cast<int>(allowence)+layoutY,
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image.rect().width()-(static_cast<int>(allowence)+layoutX), static_cast<int>(allowence)-layoutY);
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painter.drawText(labels, Qt::AlignLeft, tr("Grid ( %1 , %2 )").arg(i+1).arg(j+1));
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painter.drawText(labels, Qt::AlignHCenter, tr("Page %1 of %2").arg(i*(colomns)+j+1).arg(rows*colomns));
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if (sheets > 1)
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{
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painter.drawText(labels, Qt::AlignRight, tr("Sheet %1 of %2").arg(page).arg(sheets));
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}
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painter.end();
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return image;
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}
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//---------------------------------------------------------------------------------------------------------------------
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QRect VPoster::PageRect() const
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{
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// Because the Point unit is defined to be 1/72th of an inch
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// we can't use method pageRect(QPrinter::Point). Our dpi different can be different.
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// We convert value yourself to pixels.
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const QRectF rect = printer->pageRect(QPrinter::Millimeter);
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QRect pageRect(qFloor(ToPixel(rect.x())), qFloor(ToPixel(rect.y())), qFloor(ToPixel(rect.width())),
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qFloor(ToPixel(rect.height())));
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return pageRect;
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}
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//---------------------------------------------------------------------------------------------------------------------
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qreal VPoster::ToPixel(qreal val) const
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{
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return val / 25.4 * printer->resolution(); // Mm to pixels with current dpi.
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}
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