/usr/include/CGAL/Qt/GraphicsViewLineInput.h is in libcgal-qt5-dev 4.9-1+b2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 | // Copyright (c) 2008 GeometryFactory Sarl (France).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org).
// 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.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL$
// $Id$
//
//
// Author(s) : Andreas Fabri <Andreas.Fabri@geometryfactory.com>
// Laurent Rineau <Laurent.Rineau@geometryfactory.com>
#ifndef CGAL_QT_GRAPHICS_VIEW_LINE_INPUT_H
#define CGAL_QT_GRAPHICS_VIEW_LINE_INPUT_H
#include <QGraphicsView>
#include <QRectF>
#include <QPointF>
#include <QGraphicsItem>
#include <QGraphicsLineItem>
#include <QGraphicsScene>
#include <QGraphicsSceneMouseEvent>
#include <QPainter>
#include <QStyleOption>
#include <CGAL/Qt/Converter.h>
#include <CGAL/Qt/GraphicsViewInput.h>
#include <CGAL/Qt/utility.h>
namespace CGAL {
namespace Qt {
template <typename K>
class GraphicsViewLineInput : public GraphicsViewInput
{
public:
GraphicsViewLineInput(QObject *parent, QGraphicsScene* s);
protected:
virtual void mousePressEvent(QGraphicsSceneMouseEvent *event);
virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
virtual void keyPressEvent(QKeyEvent *event);
bool eventFilter(QObject *obj, QEvent *event);
private:
QRectF boundingRect();
QLineF qlinef();
bool second;
QGraphicsLineItem line;
QPointF qsp, qtp;
typename K::Point_2 sp, tp;
typename K::Line_2 l;
QGraphicsScene *scene_;
Converter<K> convert;
};
template <typename K>
QRectF
GraphicsViewLineInput<K>::boundingRect()
{
QRectF rect = CGAL::Qt::viewportsBbox(scene_);
return rect;
}
template <typename K>
GraphicsViewLineInput<K>::GraphicsViewLineInput(QObject *parent, QGraphicsScene* s)
: GraphicsViewInput(parent), second(false), scene_(s)
{}
template <typename K>
QLineF
GraphicsViewLineInput<K>::qlinef()
{
sp = convert(qsp);
tp = convert(qtp);
typename K::Line_2 l(sp,tp);
QRectF qrect(boundingRect());
typename K::Iso_rectangle_2 rect;
rect = convert(qrect);
Object o = intersection(l,rect);
typename K::Segment_2 s;
assign(s, o);
return convert(s);
}
template <typename K>
void
GraphicsViewLineInput<K>::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
if(event->modifiers() & ::Qt::ShiftModifier){
return;
}
if(second){
qtp = event->scenePos();
sp = convert(qsp);
tp = convert(qtp);
scene_->removeItem(&line);
Q_EMIT generate(CGAL::make_object(typename K::Line_2(sp,tp)));
} else {
qsp = event->scenePos();
qtp = QPointF(qsp.x()+1, qsp.y());
line.setLine(qlinef());
scene_->addItem(&line);
}
second = !second;
}
template <typename K>
void
GraphicsViewLineInput<K>::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
qtp = event->scenePos();
if(qtp == qsp){
qtp = QPointF(qsp.x()+1, qsp.y());
}
line.setLine(qlinef());
}
template <typename K>
void
GraphicsViewLineInput<K>::keyPressEvent ( QKeyEvent * event )
{
if(event->key() != ::Qt::Key_Delete){ // need an anchored namespace to get away from CGAL::Qt
return;
}
if(second){
scene_->removeItem(&line);
second = false;
}
}
template <typename K>
bool
GraphicsViewLineInput<K>::eventFilter(QObject *obj, QEvent *event)
{
if (event->type() == QEvent::GraphicsSceneMousePress) {
QGraphicsSceneMouseEvent *mouseEvent = static_cast<QGraphicsSceneMouseEvent *>(event);
mousePressEvent(mouseEvent);
return true;
} else if (event->type() == QEvent::GraphicsSceneMouseMove) {
QGraphicsSceneMouseEvent *mouseEvent = static_cast<QGraphicsSceneMouseEvent *>(event);
mouseMoveEvent(mouseEvent);
return true;
} else if (event->type() == QEvent::KeyPress) {
QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
keyPressEvent(keyEvent);
return true;
} else{
// standard event processing
return QObject::eventFilter(obj, event);
}
}
} // namespace Qt
} // namespace CGAL
#endif // CGAL_QT_GRAPHICS_VIEW_LINE_INPUT_H
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