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cgal/Qt_widget/include/CGAL/IO/Qt_widget_rotation_layer.h

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// Copyright (c) 2002-2004 INRIA Sophia-Antipolis (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 Lesser 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) : Radu Ursu
#ifndef CGAL_QT_WIDGET_ROTATION_LAYER_H
#define CGAL_QT_WIDGET_ROTATION_LAYER_H
#include <cstdio>
#include <CGAL/Simple_cartesian.h>
#include <CGAL/IO/pixmaps/hand.xpm>
#include <CGAL/IO/pixmaps/holddown.xpm>
#include <CGAL/IO/Qt_widget.h>
#include <CGAL/IO/Qt_widget_layer.h>
#include <qrect.h>
#include <qcursor.h>
typedef CGAL::Simple_cartesian<double> SCD;
typedef CGAL::Point_2<SCD> Point;
typedef CGAL::Vector_2<SCD> Vector;
typedef CGAL::Direction_2<SCD> Direction;
typedef CGAL::Aff_transformation_2<SCD> Transformation;
namespace CGAL {
class Qt_widget_rotation_layer : public Qt_widget_layer
{
public:
Qt_widget_rotation_layer(QObject* parent = 0, const char* name = 0)
: Qt_widget_layer(parent, name), wasrepainted(true), on_first(false){};
private:
QCursor oldcursor;
void draw(){
wasrepainted = true;
};
/*
void timerEvent( QTimerEvent *)
{
if(on_first)
widget->setCursor(QCursor(
QPixmap( (const char**)holddown_xpm)));
else
widget->setCursor(QCursor(
QPixmap( (const char**)hand_xpm)));
}
*/
bool is_pure(Qt::ButtonState s){
if((s & Qt::ControlButton) ||
(s & Qt::ShiftButton) ||
(s & Qt::AltButton))
return 0;
else
return 1;
}
void mousePressEvent(QMouseEvent *e)
{
if(e->button() == Qt::LeftButton
&& is_pure(e->state()))
{
widget->setCursor(QCursor( QPixmap( (const char**)holddown_xpm)));
if (!on_first){
first_x = e->x();
first_y = e->y();
on_first = true;
}
Point end_point[4] = {Point(11, 25), Point(11, 25),
Point(11, 25), Point(11, 25)};
for(int i=0; i<4; i++)
end_point[i] = (*t)(end_point[i]);
//Point_2 first_line_end1(11, 25), first_line_end2(11, 0);
//Point_2 second_line_end1(25, 0), second_line_end2(25, 13);
//first_line_end1 = (*t)(first_arrow_end);
//second_arrow_end = (*t)(second_arrow_end);
//save the initial raster mode
RasterOp old = widget->rasterOp();
widget->setRasterOp(XorROP);
widget->lock();
*widget << CGAL::WHITE;
widget->get_painter().drawLine(11, 0, 11, 25);
widget->get_painter().drawLine(0, 13, 25, 13);
widget->get_painter().drawLine(11, 0, 9, 5);
widget->get_painter().drawLine(11, 0, 13, 5);
widget->get_painter().drawLine(25, 13, 20, 11);
widget->get_painter().drawLine(25, 13, 20, 15);
*widget << CGAL::RED;
widget->unlock();
widget->setRasterOp(old);
}
};
void mouseReleaseEvent(QMouseEvent *e)
{
if(e->button() == Qt::LeftButton
&& is_pure(e->state()))
{
/*
double x, y, xfirst2, yfirst2;
widget->x_real(e->x(), x);
widget->y_real(e->y(), y);
widget->x_real(first_x, xfirst2);
widget->y_real(first_y, yfirst2);
double xmin, xmax, ymin, ymax, distx, disty;
if(x < xfirst2) {xmin = x; xmax = xfirst2;}
else {xmin = xfirst2; xmax = x;};
if(y < yfirst2) {ymin = y; ymax = yfirst2;}
else {ymin = yfirst2; ymax = y;};
distx = xfirst2 - x;
disty = yfirst2 - y;
widget->move_center(distx, disty);
*/
/*
//(*t) = tprim * (*t);
on_first = false;
*/
double xc = widget->x_min() + (widget->x_max() - widget->x_min())/2;
double yc = widget->y_min() + (widget->y_max() - widget->y_min())/2;
Transformation tprim(CGAL::ROTATION, Direction(xc+0.0001, yc+0.0001), 1, 100);
//Transformation tprim(CGAL::TRANSLATION, Vector(-0.5, 0));
//Transformation tprim(CGAL::SCALING, 1.2);
(*t) = (*t) * tprim;
on_first = false;
widget->setCursor(QCursor( QPixmap( (const char**)hand_xpm)));
widget->redraw();
}
}
/*
void mouseMoveEvent(QMouseEvent *e)
{
char tempc1[130], tempc2[40];
double xcoord, ycoord;
if(on_first)
{
int x = e->x();
int y = e->y();
//save the initial raster mode
RasterOp old = widget->rasterOp();
widget->setRasterOp(XorROP);
widget->lock();
*widget << CGAL::GRAY;
if(!wasrepainted) {
widget->x_real(x2 - first_x, xcoord);
widget->x_real(y2 - first_y, ycoord);
std::sprintf(tempc1, " dx=%20.6f", xcoord);
std::sprintf(tempc2, ", dy=%20.6f", ycoord);
strcat(tempc1, tempc2);
widget->get_painter().drawLine(first_x, first_y, x2, y2);
*widget << CGAL::GREEN;
widget->get_painter().drawText(x2, y2, tempc1, 49);
*widget << CGAL::GRAY;
}
widget->x_real(x - first_x, xcoord);
widget->x_real(y - first_y, ycoord);
std::sprintf(tempc1, " dx=%20.6f", xcoord);
std::sprintf(tempc2, ", dy=%20.6f", ycoord);
strcat(tempc1, tempc2);
widget->get_painter().drawLine(first_x, first_y, x, y);
*widget << CGAL::GREEN;
widget->get_painter().drawText(x, y, tempc1, 49);
widget->unlock();
widget->setRasterOp(old);
//save the last coordinates to redraw the screen
x2 = x;
y2 = y;
wasrepainted = false;
}
};
*/
void activating()
{
t = widget->get_transformation();
oldcursor = widget->cursor();
widget->setCursor(QCursor( QPixmap( (const char**)hand_xpm)));
wasrepainted = true;
// startTimer( 100 );
};
void deactivating()
{
widget->setCursor(oldcursor);
// killTimers();
};
int first_x, first_y;
int x2, y2;
bool wasrepainted;
bool on_first;
Transformation *t;
};//end class
} // namespace CGAL
#endif // CGAL_QT_WIDGET_ROTATION_LAYER_H
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