valentina/src/libs/vwidgets/vnobrushscalepathitem.cpp

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/************************************************************************
**
** @file vnobrushscalepathitem.cpp
** @author Roman Telezhynskyi <dismine(at)gmail.com>
** @date 10 1, 2016
**
** @brief
** @copyright
** This source code is part of the Valentina project, a pattern making
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** program, whose allow create and modeling patterns of clothing.
** Copyright (C) 2016 Valentina project
** <https://bitbucket.org/dismine/valentina> All Rights Reserved.
**
** Valentina 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 3 of the License, or
** (at your option) any later version.
**
** Valentina is distributed 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 Valentina. If not, see <http://www.gnu.org/licenses/>.
**
*************************************************************************/
#include "vnobrushscalepathitem.h"
#include <QBrush>
#include <QMatrix>
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#include <QPainter>
//---------------------------------------------------------------------------------------------------------------------
VNoBrushScalePathItem::VNoBrushScalePathItem(QGraphicsItem *parent) :
QGraphicsPathItem(parent)
{
}
//---------------------------------------------------------------------------------------------------------------------
void VNoBrushScalePathItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
/*
* how to avoid transformation of QBrush
* http://www.qtforum.org/article/23942/how-to-avoid-transformation-of-qbrush-texture.html
* ?s=b4ba78dd6758da78fe395d8f6bb7512511a0833e#post84983
*
* Not Scaling QBrush style fro qgraphics view item
* http://www.qtcentre.org/archive/index.php/t-13950.html
*
* You'll have to scale the brush down. The QStyleOptionGraphicsItem option passed in paint() will give you the
* transform being used, and you can set a matrix on a QBrush. Put the two together and you can scale the brush
* opposite of the item.
*/
QBrush brush = this->brush();
brush.setMatrix(painter->combinedMatrix().inverted());
this->setBrush(brush);
QGraphicsPathItem::paint(painter, option, widget);
}