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koffice/kpresenter/KPrPolygonObject.cpp

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// -*- Mode: c++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 4; -*-
/* This file is part of the KDE project
Copyright (C) 2001 Toshitaka Fujioka <fujioka@kde.org>
Copyright (C) 2005 Thorsten Zachmann <zachmann@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "KPrPolygonObject.h"
#include "KPrGradient.h"
#include <KoTextZoomHandler.h>
#include <kdebug.h>
#include <qbitmap.h>
#include <qregion.h>
#include <qdom.h>
#include <qpicture.h>
#include <qpainter.h>
#include "KPrPolygonObjectIface.h"
#include <KoUnit.h>
#include <KoOasisContext.h>
#include <math.h>
#include <KoXmlNS.h>
#include "KoPen.h"
using namespace std;
KPrPolygonObject::KPrPolygonObject()
: KPr2DObject()
{
}
KPrPolygonObject::KPrPolygonObject( const KoPointArray &_points, const KoSize &_size,
const KoPen &_pen, const QBrush &_brush,
FillType _fillType, const QColor &_gColor1, const QColor &_gColor2, BCType _gType,
bool _unbalanced, int _xfactor, int _yfactor,
bool _checkConcavePolygon, int _cornersValue, int _sharpnessValue )
: KPr2DObject( _pen, _brush, _fillType, _gColor1, _gColor2, _gType, _unbalanced, _xfactor, _yfactor )
{
points = KoPointArray( _points );
ext = _size;
checkConcavePolygon = _checkConcavePolygon;
cornersValue = _cornersValue;
sharpnessValue = _sharpnessValue;
}
KPrPolygonObject &KPrPolygonObject::operator=( const KPrPolygonObject & )
{
return *this;
}
DCOPObject* KPrPolygonObject::dcopObject()
{
if ( !dcop )
dcop = new KPrPolygonObjectIface( this );
return dcop;
}
bool KPrPolygonObject::saveOasisObjectAttributes( KPOasisSaveContext &sc ) const
{
sc.xmlWriter.addAttribute( "draw:corners", cornersValue );
sc.xmlWriter.addAttribute( "draw:concave", checkConcavePolygon ? "true" : "false" );
if ( checkConcavePolygon )
{
sc.xmlWriter.addAttribute( "draw:sharpness", QString( "%1%").arg( sharpnessValue ) );
}
return true;
}
const char * KPrPolygonObject::getOasisElementName() const
{
return "draw:regular-polygon";
}
QDomDocumentFragment KPrPolygonObject::save( QDomDocument& doc, double offset )
{
QDomDocumentFragment fragment = KPr2DObject::save( doc, offset );
QDomElement elemSettings = doc.createElement( "SETTINGS" );
elemSettings.setAttribute( "checkConcavePolygon", static_cast<int>( checkConcavePolygon ) );
elemSettings.setAttribute( "cornersValue", cornersValue );
elemSettings.setAttribute( "sharpnessValue", sharpnessValue );
fragment.appendChild( elemSettings );
if ( !points.isNull() ) {
QDomElement elemPoints = doc.createElement( "POINTS" );
KoPointArray::ConstIterator it;
for ( it = points.begin(); it != points.end(); ++it ) {
QDomElement elemPoint = doc.createElement( "Point" );
KoPoint point = (*it);
elemPoint.setAttribute( "point_x", point.x() );
elemPoint.setAttribute( "point_y", point.y() );
elemPoints.appendChild( elemPoint );
}
fragment.appendChild( elemPoints );
}
return fragment;
}
void KPrPolygonObject::loadOasis( const QDomElement &element, KoOasisContext & context, KPrLoadingInfo *info )
{
kdDebug()<<"void KPrPolygonObject::loadOasis( const QDomElement &element )***********\n";
KPr2DObject::loadOasis( element,context, info );
cornersValue = element.attributeNS( KoXmlNS::draw, "corners", QString::null ).toInt();
checkConcavePolygon = element.attributeNS( KoXmlNS::draw, "concave", QString::null ) == "true";
sharpnessValue = 0;
if ( checkConcavePolygon )
{
sharpnessValue = element.attributeNS( KoXmlNS::draw, "sharpness", QString::null ).remove( '%').toInt();
}
drawPolygon();
}
double KPrPolygonObject::load( const QDomElement &element )
{
double offset=KPr2DObject::load( element );
QDomElement e = element.namedItem( "SETTINGS" ).toElement();
if ( !e.isNull() ) {
bool _checkConcavePolygon = false;
int _cornersValue = 3;
int _sharpnessValue = 0;
if ( e.hasAttribute( "checkConcavePolygon" ) )
_checkConcavePolygon = static_cast<bool>( e.attribute( "checkConcavePolygon" ).toInt() );
if ( e.hasAttribute( "cornersValue" ) )
_cornersValue = e.attribute( "cornersValue" ).toInt();
if ( e.hasAttribute( "sharpnessValue" ) )
_sharpnessValue = e.attribute( "sharpnessValue" ).toInt();
checkConcavePolygon = _checkConcavePolygon;
cornersValue = _cornersValue;
sharpnessValue = _sharpnessValue;
}
e = element.namedItem( "POINTS" ).toElement();
if ( !e.isNull() ) {
QDomElement elemPoint = e.firstChild().toElement();
unsigned int index = 0;
while ( !elemPoint.isNull() ) {
if ( elemPoint.tagName() == "Point" ) {
double tmpX = 0;
double tmpY = 0;
if( elemPoint.hasAttribute( "point_x" ) )
tmpX = elemPoint.attribute( "point_x" ).toDouble();
if( elemPoint.hasAttribute( "point_y" ) )
tmpY = elemPoint.attribute( "point_y" ).toDouble();
points.putPoints( index, 1, tmpX,tmpY );
}
elemPoint = elemPoint.nextSibling().toElement();
++index;
}
}
return offset;
}
void KPrPolygonObject::setSize( double _width, double _height )
{
KoSize origSize( ext );
KPrObject::setSize( _width, _height );
double fx = ext.width() / origSize.width();
double fy = ext.height() / origSize.height();
updatePoints( fx, fy );
}
void KPrPolygonObject::updatePoints( double _fx, double _fy )
{
int index = 0;
KoPointArray tmpPoints;
KoPointArray::ConstIterator it;
for ( it = points.begin(); it != points.end(); ++it ) {
KoPoint point = (*it);
double tmpX = point.x() * _fx;
double tmpY = point.y() * _fy;
tmpPoints.putPoints( index, 1, tmpX,tmpY );
++index;
}
points = tmpPoints;
}
void KPrPolygonObject::paint( QPainter* _painter,KoTextZoomHandler*_zoomHandler,
int /* pageNum */, bool drawingShadow, bool drawContour )
{
int _w = ( pen.style() == Qt::NoPen ) ? 1 : pen.width();//pen.width();
if ( drawContour ) {
QPointArray pointArray2 = points.zoomPointArray( _zoomHandler );
QPen pen3( Qt::black, 1, Qt::DotLine );
_painter->setPen( pen3 );
_painter->setRasterOp( Qt::NotXorROP );
_painter->drawPolygon( pointArray2 );
return;
}
QPointArray pointArray = points.zoomPointArray( _zoomHandler, _w );
QPen pen2 = pen.zoomedPen( _zoomHandler );
if ( drawingShadow || getFillType() == FT_BRUSH || !gradient ) {
_painter->setPen( pen2 );
_painter->setBrush( getBrush() );
_painter->drawPolygon( pointArray );
}
else {
QSize size( _zoomHandler->zoomSize( ext ) );
if ( m_redrawGradientPix || gradient->size() != size )
{
m_redrawGradientPix = false;
gradient->setSize( size );
QRegion clipregion( pointArray );
m_gradientPix.resize( size );
m_gradientPix.fill( Qt::white );
QPainter p;
p.begin( &m_gradientPix );
p.setClipRegion( clipregion );
p.drawPixmap( 0, 0, gradient->pixmap() );
p.end();
m_gradientPix.setMask( m_gradientPix.createHeuristicMask() );
}
QRect _rect = pointArray.boundingRect();
_painter->drawPixmap( 0, 0, m_gradientPix, 0, 0, _rect.width(), _rect.height() );
_painter->setPen( pen2 );
_painter->setBrush( Qt::NoBrush );
_painter->drawPolygon( pointArray );
}
}
void KPrPolygonObject::drawPolygon()
{
kdDebug()<<"void KPrPolygonObject::drawPolygon()***********\n";
KoRect _rect( 0, 0, ext.width(), ext.height() );
double angle = 2 * M_PI / cornersValue;
double diameter = static_cast<double>( QMAX( _rect.width(), _rect.height() ) );
double radius = diameter * 0.5;
KoPointArray _points( checkConcavePolygon ? cornersValue * 2 : cornersValue );
_points.setPoint( 0, 0, qRound( -radius ) );
double xmin = 0;
double ymin = qRound( -radius );
if ( checkConcavePolygon ) {
angle = angle / 2.0;
double a = angle;
double r = radius - ( sharpnessValue / 100.0 * radius );
for ( int i = 1; i < cornersValue * 2; ++i ) {
double xp, yp;
if ( i % 2 ) {
xp = r * sin( a );
yp = -r * cos( a );
}
else {
xp = radius * sin( a );
yp = -radius * cos( a );
}
a += angle;
_points.setPoint( i, xp, yp );
if (xp < xmin)
xmin = xp;
if (yp < ymin)
ymin = yp;
}
}
else {
double a = angle;
for ( int i = 1; i < cornersValue; ++i ) {
double xp = radius * sin( a );
double yp = -radius * cos( a );
a += angle;
_points.setPoint( i, xp, yp );
if (xp < xmin)
xmin = xp;
if (yp < ymin)
ymin = yp;
}
}
// calculate the points as offsets to 0,0
KoRect _changRect = _points.boundingRect();
double fx = _rect.width() / _changRect.width();
double fy = _rect.height() / _changRect.height();
int _index = 0;
KoPointArray tmpPoints;
KoPointArray::ConstIterator it;
for ( it = _points.begin(); it != _points.end(); ++it ) {
KoPoint point = (*it);
double tmpX = ( point.x() - xmin) * fx;
double tmpY = ( point.y() - ymin) * fy;
tmpPoints.putPoints( _index, 1, tmpX,tmpY );
++_index;
}
points = tmpPoints;
if ( getFillType() == FT_GRADIENT && gradient )
m_redrawGradientPix = true;
}
void KPrPolygonObject::flip( bool horizontal )
{
KPr2DObject::flip( horizontal );
// flip the points
KoPointArray tmpPoints;
int index = 0;
if ( ! horizontal )
{
KoPointArray::ConstIterator it;
double horiz = getSize().height()/2;
for ( it = points.begin(); it != points.end(); ++it ) {
KoPoint point = (*it);
if ( point.y()> horiz )
tmpPoints.putPoints( index, 1, point.x(),point.y()- 2*(point.y()-horiz) );
else
tmpPoints.putPoints( index, 1, point.x(),point.y()+ 2*(horiz - point.y()) );
++index;
}
}
else
{
KoPointArray::ConstIterator it;
double vert = getSize().width()/2;
for ( it = points.begin(); it != points.end(); ++it ) {
KoPoint point = (*it);
if ( point.x()> vert )
tmpPoints.putPoints( index, 1, point.x()- 2*(point.x()-vert), point.y() );
else
tmpPoints.putPoints( index, 1, point.x()+ 2*(vert - point.x()),point.y() );
++index;
}
}
points = tmpPoints;
}
KoSize KPrPolygonObject::getRealSize() const {
KoSize size( ext );
KoPoint realOrig( orig );
KoPointArray p( points );
getRealSizeAndOrigFromPoints( p, angle, size, realOrig );
return size;
}
KoPoint KPrPolygonObject::getRealOrig() const {
KoSize size( ext );
KoPoint realOrig( orig );
KoPointArray p( points );
getRealSizeAndOrigFromPoints( p, angle, size, realOrig );
return realOrig;
}