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koffice/kivio/kiviopart/kiviosdk/kivio_arrowhead.cpp

787 lines
20 KiB

/*
* Kivio - Visual Modelling and Flowcharting
* Copyright (C) 2000-2001 theKompany.com & Dave Marotti
*
* This program 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 2
* of the License, or (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "kivio_arrowhead.h"
#include "kivio_common.h"
#include "kivio_painter.h"
#include "kivio_point.h"
#include "kivio_fill_style.h"
#include <math.h>
#include <kdebug.h>
#include <KoZoomHandler.h>
KivioArrowHead::KivioArrowHead()
{
// Both of these values are in pixels
m_cut = 0.0f;
m_w = m_l = 10.0f;
m_type = kahtNone;
}
KivioArrowHead::~KivioArrowHead()
{
}
QDomElement KivioArrowHead::saveXML( QDomDocument &doc )
{
QDomElement e = doc.createElement("KivioArrowHead");
XmlWriteFloat( e, "cut", m_cut );
XmlWriteFloat( e, "w", m_w );
XmlWriteFloat( e, "l", m_l );
XmlWriteInt( e, "type", m_type );
return e;
}
bool KivioArrowHead::loadXML( const QDomElement &e )
{
m_cut = XmlReadFloat( e, "cut", 0.0f );
m_w = XmlReadFloat( e, "w", 10.0f );
m_l = XmlReadFloat( e, "l", 10.0f );
m_type = XmlReadInt( e, "type", m_type );
return true;
}
void KivioArrowHead::setType(int t)
{
m_type = t;
switch( t )
{
case kahtNone:
m_cut = 0.0f;
break;
case kahtArrowLine:
case kahtForwardSlash:
case kahtBackSlash:
case kahtPipe:
case kahtCrowFoot:
case kahtFork:
case kahtCrowFootPipe:
case kahtMidForwardSlash:
case kahtMidBackSlash:
case kahtMidPipe:
m_cut = 0.0f;
break;
case kahtArrowTriangleSolid:
case kahtArrowTriangleHollow:
case kahtDoubleTriangleSolid:
case kahtDoubleTriangleHollow:
case kahtDiamondSolid:
case kahtDiamondHollow:
// case kahtCircleSolid:
// case kahtCircleHollow:
m_cut = KIVIO_CUT_LENGTH;
break;
default:
m_type = kahtNone;
m_cut = 0.0f;
break;
}
}
float KivioArrowHead::cut()
{
if( m_cut == KIVIO_CUT_LENGTH )
return m_l;
else if( m_cut == KIVIO_CUT_HALF_LENGTH )
return m_l / 2.0f;
return m_cut;
}
/**
* Paints the arrow head at a given point, direction, and scale.
*
* @param painter The painter object to draw with
* @param x The x position of the arrow head (the point)
* @param y The y position of the arrow head (the point)
* @param vecX The X component of the negative direction vector
* @param vecY The Y component of the negative direction vector
* @param zoomHandler The zoom handler to use to scale
*
* The (x,y) should be the vertex
* representing the endpoint of the line. The <vecX, vecY> is a vector
* pointing to (x,y) (in the direction of the arrow head).
*/
void KivioArrowHead::paint( KivioPainter *painter, float x, float y, float vecX, float vecY, KoZoomHandler* zoomHandler )
{
KivioArrowHeadData d;
d.painter = painter;
d.x = x;
d.y = y;
d.vecX = vecX;
d.vecY = vecY;
d.zoomHandler = zoomHandler;
// One big-ass switch statement
switch( m_type )
{
case kahtNone:
return;
case kahtArrowLine:
paintArrowLine( &d );
break;
case kahtArrowTriangleSolid:
paintArrowTriangle( &d, true );
break;
case kahtArrowTriangleHollow:
paintArrowTriangle( &d, false );
break;
case kahtDoubleTriangleSolid:
paintDoubleTriangle( &d, true );
break;
case kahtDoubleTriangleHollow:
paintDoubleTriangle( &d, false );
break;
case kahtForwardSlash:
paintForwardSlash( &d );
break;
case kahtBackSlash:
paintBackSlash( &d );
break;
case kahtPipe:
paintPipe( &d );
break;
case kahtMidForwardSlash:
paintMidForwardSlash( &d );
break;
case kahtMidBackSlash:
paintMidBackSlash( &d );
break;
case kahtMidPipe:
paintMidPipe( &d );
break;
case kahtDiamondSolid:
paintDiamond( &d, true );
break;
case kahtDiamondHollow:
paintDiamond( &d, false );
break;
case kahtCrowFoot:
paintCrowFoot( &d );
break;
case kahtFork:
paintFork( &d );
break;
case kahtCrowFootPipe:
paintCrowFootPipe( &d );
break;
/*
case kahtCircleSolid:
paintCircle( &d, true );
break;
case kahtCircleHollow:
paintCircle( &d, false );
break;
*/
default:
break;
}
}
void KivioArrowHead::paintArrowLine( KivioArrowHeadData *d )
{
KivioPainter *painter = d->painter;
float vecX = d->vecX;
float vecY = d->vecY;
float length;
KoZoomHandler* zoomHandler = d->zoomHandler;
float nvecX, nvecY; // normalized vectors
float pvecX, pvecY; // normal perpendicular vector
length = sqrt( vecX*vecX + vecY*vecY );
nvecX = - vecX / length;
nvecY = - vecY / length;
pvecX = nvecY;
pvecY = -nvecX;
QPtrList<KivioPoint>l;
l.setAutoDelete(true);
float _x;
float _y;
_x = zoomHandler->zoomItX((d->x + nvecX * m_l) + pvecX*(m_w/2.0f));
_y = zoomHandler->zoomItY((d->y + nvecY * m_l) + pvecY*(m_w/2.0f));
l.append( new KivioPoint( _x, _y ) );
_x = zoomHandler->zoomItX(d->x);
_y = zoomHandler->zoomItY(d->y);
l.append( new KivioPoint( _x, _y ) ); // point
pvecX *= -1.0f;
pvecY *= -1.0f;
_x = zoomHandler->zoomItX((d->x + nvecX * m_l) + pvecX*(m_w/2.0f));
_y = zoomHandler->zoomItY((d->y + nvecY * m_l) + pvecY*(m_w/2.0f));
l.append( new KivioPoint( _x, _y ) );
painter->drawPolyline( &l );
}
void KivioArrowHead::paintArrowTriangle( KivioArrowHeadData *d, bool solid )
{
KivioPainter *painter = d->painter;
QColor cbg = painter->bgColor();
if(solid) {
painter->setBGColor(painter->fgColor());
}
float vecX = d->vecX;
float vecY = d->vecY;
float length;
KoZoomHandler* zoomHandler = d->zoomHandler;
float nvecX, nvecY; // normalized vectors
float pvecX, pvecY; // normal perpendicular vector
length = sqrt( vecX*vecX + vecY*vecY );
nvecX = - vecX / length;
nvecY = - vecY / length;
pvecX = nvecY;
pvecY = -nvecX;
QPtrList<KivioPoint>l;
l.setAutoDelete(true);
float _x = zoomHandler->zoomItX(d->x);
float _y = zoomHandler->zoomItY(d->y);
l.append( new KivioPoint( _x, _y ) );
_x = zoomHandler->zoomItX((d->x + nvecX * m_l) + pvecX*(m_w/2.0f));
_y = zoomHandler->zoomItY((d->y + nvecY * m_l) + pvecY*(m_w/2.0f));
l.append( new KivioPoint( _x, _y ) );
pvecX *= -1.0f;
pvecY *= -1.0f;
_x = zoomHandler->zoomItX((d->x + nvecX * m_l) + pvecX*(m_w/2.0f));
_y = zoomHandler->zoomItY((d->y + nvecY * m_l) + pvecY*(m_w/2.0f));
l.append( new KivioPoint( _x, _y ) );
l.append( new KivioPoint( zoomHandler->zoomItX(d->x), zoomHandler->zoomItY(d->y) ) );
painter->drawPolygon( &l );
painter->setBGColor(cbg);
}
void KivioArrowHead::paintDoubleTriangle( KivioArrowHeadData *d, bool solid )
{
KivioPainter *painter = d->painter;
QColor cbg = painter->bgColor();
if(solid) {
painter->setBGColor(painter->fgColor());
}
float vecX = d->vecX;
float vecY = d->vecY;
float length;
KoZoomHandler* zoomHandler = d->zoomHandler;
float nvecX, nvecY; // normalized vectors
float pvecX, pvecY; // normal perpendicular vector
length = sqrt( vecX*vecX + vecY*vecY );
nvecX = - vecX / length;
nvecY = - vecY / length;
pvecX = nvecY;
pvecY = -nvecX;
QPtrList<KivioPoint> l1;
l1.setAutoDelete(true);
QPtrList<KivioPoint> l2;
l2.setAutoDelete(true);
float _x = zoomHandler->zoomItX(d->x);
float _y = zoomHandler->zoomItY(d->y);
l1.append( new KivioPoint( _x, _y ) );
_x = zoomHandler->zoomItX(d->x + nvecX * (m_l / 2.0f));
_y = zoomHandler->zoomItY(d->y + nvecY * (m_l / 2.0f));
l2.append( new KivioPoint( _x, _y ) );
_x = zoomHandler->zoomItX((d->x + nvecX * (m_l / 2.0f)) + pvecX*(m_w/2.0f));
_y = zoomHandler->zoomItY((d->y + nvecY * (m_l / 2.0f)) + pvecY*(m_w/2.0f));
l1.append( new KivioPoint( _x, _y ) );
_x = zoomHandler->zoomItX((d->x + nvecX * m_l) + pvecX*(m_w/2.0f));
_y = zoomHandler->zoomItY((d->y + nvecY * m_l) + pvecY*(m_w/2.0f));
l2.append( new KivioPoint( _x, _y ) );
pvecX *= -1.0f;
pvecY *= -1.0f;
_x = zoomHandler->zoomItX((d->x + nvecX * (m_l / 2.0f)) + pvecX*(m_w/2.0f));
_y = zoomHandler->zoomItY((d->y + nvecY * (m_l / 2.0f)) + pvecY*(m_w/2.0f));
l1.append( new KivioPoint( _x, _y ) );
_x = zoomHandler->zoomItX((d->x + nvecX * m_l) + pvecX*(m_w/2.0f));
_y = zoomHandler->zoomItY((d->y + nvecY * m_l) + pvecY*(m_w/2.0f));
l2.append( new KivioPoint( _x, _y ) );
l1.append( new KivioPoint( zoomHandler->zoomItX(d->x), zoomHandler->zoomItY(d->y) ) );
_x = zoomHandler->zoomItX(d->x + nvecX * (m_l / 2.0f));
_y = zoomHandler->zoomItY(d->y + nvecY * (m_l / 2.0f));
l2.append( new KivioPoint( _x, _y ) );
painter->drawPolygon( &l1 );
painter->drawPolygon( &l2 );
painter->setBGColor(cbg);
}
void KivioArrowHead::paintForwardSlash( KivioArrowHeadData *d )
{
KivioPainter *painter = d->painter;
float vecX = d->vecX;
float vecY = d->vecY;
KoZoomHandler* zoomHandler = d->zoomHandler;
float nvecX, nvecY; // normalized vectors
float pvecX, pvecY; // normal perpendicular vector
float length = sqrt( vecX*vecX + vecY*vecY );
nvecX = - vecX / length;
nvecY = - vecY / length;
pvecX = nvecY;
pvecY = -nvecX;
int x1 = zoomHandler->zoomItX((d->x + nvecX * (m_l/2.0f)) + pvecX*(m_w/2.0f));
int y1 = zoomHandler->zoomItY((d->y + nvecY * (m_l/2.0f)) + pvecY*(m_w/2.0f));
int x2 = zoomHandler->zoomItX((d->x - nvecX * (m_l/2.0f)) - pvecX*(m_w/2.0f));
int y2 = zoomHandler->zoomItY((d->y - nvecY * (m_l/2.0f)) - pvecY*(m_w/2.0f));
painter->drawLine(x1, y1, x2, y2);
}
void KivioArrowHead::paintBackSlash( KivioArrowHeadData *d )
{
KivioPainter *painter = d->painter;
float vecX = d->vecX;
float vecY = d->vecY;
KoZoomHandler* zoomHandler = d->zoomHandler;
float nvecX, nvecY; // normalized vectors
float pvecX, pvecY; // normal perpendicular vector
float length = sqrt( vecX*vecX + vecY*vecY );
nvecX = - vecX / length;
nvecY = - vecY / length;
pvecX = nvecY;
pvecY = -nvecX;
int x1 = zoomHandler->zoomItX((d->x - nvecX * (m_l/2.0f)) + pvecX*(m_w/2.0f));
int y1 = zoomHandler->zoomItY((d->y - nvecY * (m_l/2.0f)) + pvecY*(m_w/2.0f));
int x2 = zoomHandler->zoomItX((d->x + nvecX * (m_l/2.0f)) - pvecX*(m_w/2.0f));
int y2 = zoomHandler->zoomItY((d->y + nvecY * (m_l/2.0f)) - pvecY*(m_w/2.0f));
painter->drawLine(x1, y1, x2, y2);
}
void KivioArrowHead::paintPipe( KivioArrowHeadData *d )
{
KivioPainter *painter = d->painter;
float vecX = d->vecX;
float vecY = d->vecY;
KoZoomHandler* zoomHandler = d->zoomHandler;
float nvecX, nvecY; // normalized vectors
float pvecX, pvecY; // normal perpendicular vector
float length = sqrt( vecX*vecX + vecY*vecY );
nvecX = - vecX / length;
nvecY = - vecY / length;
pvecX = nvecY;
pvecY = -nvecX;
int x1 = zoomHandler->zoomItX(d->x + pvecX*(m_w/2.0f));
int y1 = zoomHandler->zoomItY(d->y + pvecY*(m_w/2.0f));
int x2 = zoomHandler->zoomItX(d->x - pvecX*(m_w/2.0f));
int y2 = zoomHandler->zoomItY(d->y - pvecY*(m_w/2.0f));
painter->drawLine(x1, y1, x2, y2);
}
void KivioArrowHead::paintDiamond( KivioArrowHeadData *d, bool solid )
{
KivioPainter *painter = d->painter;
QColor cbg = painter->bgColor();
if(solid) {
painter->setBGColor(painter->fgColor());
}
float vecX = d->vecX;
float vecY = d->vecY;
KoZoomHandler* zoomHandler = d->zoomHandler;
float nvecX, nvecY; // normalized vectors
float pvecX, pvecY; // normal perpendicular vector
float length = sqrt( vecX*vecX + vecY*vecY );
nvecX = - vecX / length;
nvecY = - vecY / length;
pvecX = nvecY;
pvecY = -nvecX;
QPtrList<KivioPoint> l;
l.setAutoDelete(true);
float _x = zoomHandler->zoomItX(d->x);
float _y = zoomHandler->zoomItY(d->y);
l.append( new KivioPoint( _x, _y ) );
_x = zoomHandler->zoomItX((d->x + nvecX * (m_l/2.0f)) - pvecX*(m_w/2.0f));
_y = zoomHandler->zoomItY((d->y + nvecY * (m_l/2.0f)) - pvecY*(m_w/2.0f));
l.append( new KivioPoint( _x, _y ) );
_x = zoomHandler->zoomItX((d->x + nvecX * m_l));
_y = zoomHandler->zoomItY((d->y + nvecY * m_l));
l.append( new KivioPoint( _x, _y ) );
_x = zoomHandler->zoomItX((d->x + nvecX * (m_l/2.0f)) + pvecX*(m_w/2.0f));
_y = zoomHandler->zoomItY((d->y + nvecY * (m_l/2.0f)) + pvecY*(m_w/2.0f));
l.append( new KivioPoint( _x, _y ) );
_x = zoomHandler->zoomItX(d->x);
_y = zoomHandler->zoomItY(d->y);
l.append( new KivioPoint( _x, _y ) );
painter->drawPolygon( &l );
painter->setBGColor(cbg);
}
void KivioArrowHead::paintCircle( KivioArrowHeadData *d, bool solid )
{
KivioPainter *painter = d->painter;
QColor cbg = painter->bgColor();
if(solid) {
painter->setBGColor(painter->fgColor());
}
float vecX = d->vecX;
float vecY = d->vecY;
KoZoomHandler* zoomHandler = d->zoomHandler;
float nvecX, nvecY; // normalized vectors
float pvecX, pvecY; // normal perpendicular vector
float length = sqrt( vecX*vecX + vecY*vecY );
nvecX = - vecX / length;
nvecY = - vecY / length;
pvecX = nvecY;
pvecY = -nvecX;
int x = zoomHandler->zoomItX(d->x + nvecX * (m_l / 2.0f));
int y = zoomHandler->zoomItY(d->y + nvecY * (m_l / 2.0f));
int w = zoomHandler->zoomItY(m_w);
int h = zoomHandler->zoomItX(m_l);
painter->drawEllipse(x, y, w, h);
painter->setBGColor(cbg);
}
void KivioArrowHead::paintCrowFoot( KivioArrowHeadData *d )
{
KivioPainter *painter = d->painter;
float vecX = d->vecX;
float vecY = d->vecY;
float length;
KoZoomHandler* zoomHandler = d->zoomHandler;
float nvecX, nvecY; // normalized vectors
float pvecX, pvecY; // normal perpendicular vector
length = sqrt( vecX*vecX + vecY*vecY );
nvecX = - vecX / length;
nvecY = - vecY / length;
pvecX = nvecY;
pvecY = -nvecX;
QPtrList<KivioPoint>l;
l.setAutoDelete(true);
float _x;
float _y;
_x = zoomHandler->zoomItX(d->x + pvecX*(m_w/2.0f));
_y = zoomHandler->zoomItY(d->y + pvecY*(m_w/2.0f));
l.append( new KivioPoint( _x, _y ) );
_x = zoomHandler->zoomItX(d->x + nvecX * m_l);
_y = zoomHandler->zoomItY(d->y + nvecY * m_l);
l.append( new KivioPoint( _x, _y ) ); // point
pvecX *= -1.0f;
pvecY *= -1.0f;
_x = zoomHandler->zoomItX(d->x + pvecX*(m_w/2.0f));
_y = zoomHandler->zoomItY(d->y + pvecY*(m_w/2.0f));
l.append( new KivioPoint( _x, _y ) );
painter->drawPolyline( &l );
}
void KivioArrowHead::paintFork( KivioArrowHeadData *d )
{
KivioPainter *painter = d->painter;
float vecX = d->vecX;
float vecY = d->vecY;
float length;
KoZoomHandler* zoomHandler = d->zoomHandler;
float nvecX, nvecY; // normalized vectors
float pvecX, pvecY; // normal perpendicular vector
length = sqrt( vecX*vecX + vecY*vecY );
nvecX = - vecX / length;
nvecY = - vecY / length;
pvecX = nvecY;
pvecY = -nvecX;
QPtrList<KivioPoint>l;
l.setAutoDelete(true);
float _x;
float _y;
_x = zoomHandler->zoomItX(d->x + pvecX*(m_w/2.0f));
_y = zoomHandler->zoomItY(d->y + pvecY*(m_w/2.0f));
l.append( new KivioPoint( _x, _y ) );
_x = zoomHandler->zoomItX((d->x + nvecX * m_l) + pvecX*(m_w/2.0f));
_y = zoomHandler->zoomItY((d->y + nvecY * m_l) + pvecY*(m_w/2.0f));
l.append( new KivioPoint( _x, _y ) );
pvecX *= -1.0f;
pvecY *= -1.0f;
_x = zoomHandler->zoomItX((d->x + nvecX * m_l) + pvecX*(m_w/2.0f));
_y = zoomHandler->zoomItY((d->y + nvecY * m_l) + pvecY*(m_w/2.0f));
l.append( new KivioPoint( _x, _y ) );
_x = zoomHandler->zoomItX(d->x + pvecX*(m_w/2.0f));
_y = zoomHandler->zoomItY(d->y + pvecY*(m_w/2.0f));
l.append( new KivioPoint( _x, _y ) );
painter->drawPolyline( &l );
}
void KivioArrowHead::paintCrowFootPipe( KivioArrowHeadData *d )
{
KivioPainter *painter = d->painter;
float vecX = d->vecX;
float vecY = d->vecY;
KoZoomHandler* zoomHandler = d->zoomHandler;
float nvecX, nvecY; // normalized vectors
float pvecX, pvecY; // normal perpendicular vector
float length = sqrt( vecX*vecX + vecY*vecY );
nvecX = - vecX / length;
nvecY = - vecY / length;
pvecX = nvecY;
pvecY = -nvecX;
int x1 = zoomHandler->zoomItX((d->x + nvecX * m_l) + pvecX*(m_w/2.0f));
int y1 = zoomHandler->zoomItY((d->y + nvecY * m_l) + pvecY*(m_w/2.0f));
int x2 = zoomHandler->zoomItX((d->x + nvecX * m_l) - pvecX*(m_w/2.0f));
int y2 = zoomHandler->zoomItY((d->y + nvecY * m_l) - pvecY*(m_w/2.0f));
painter->drawLine(x1, y1, x2, y2);
paintCrowFoot( d );
}
void KivioArrowHead::paintMidForwardSlash( KivioArrowHeadData *d )
{
KivioPainter *painter = d->painter;
float vecX = d->vecX;
float vecY = d->vecY;
KoZoomHandler* zoomHandler = d->zoomHandler;
float nvecX, nvecY; // normalized vectors
float pvecX, pvecY; // normal perpendicular vector
float length = sqrt( vecX*vecX + vecY*vecY );
nvecX = - vecX / length;
nvecY = - vecY / length;
pvecX = nvecY;
pvecY = -nvecX;
int x1 = zoomHandler->zoomItX(d->x + pvecX*(m_w/2.0f));
int y1 = zoomHandler->zoomItY(d->y + pvecY*(m_w/2.0f));
int x2 = zoomHandler->zoomItX((d->x + nvecX * m_l) - pvecX*(m_w/2.0f));
int y2 = zoomHandler->zoomItY((d->y + nvecY * m_l) - pvecY*(m_w/2.0f));
painter->drawLine(x1, y1, x2, y2);
}
void KivioArrowHead::paintMidBackSlash( KivioArrowHeadData *d )
{
KivioPainter *painter = d->painter;
float vecX = d->vecX;
float vecY = d->vecY;
KoZoomHandler* zoomHandler = d->zoomHandler;
float nvecX, nvecY; // normalized vectors
float pvecX, pvecY; // normal perpendicular vector
float length = sqrt( vecX*vecX + vecY*vecY );
nvecX = - vecX / length;
nvecY = - vecY / length;
pvecX = nvecY;
pvecY = -nvecX;
int x1 = zoomHandler->zoomItX((d->x + nvecX * m_l) + pvecX*(m_w/2.0f));
int y1 = zoomHandler->zoomItY((d->y + nvecY * m_l) + pvecY*(m_w/2.0f));
int x2 = zoomHandler->zoomItX(d->x - pvecX*(m_w/2.0f));
int y2 = zoomHandler->zoomItY(d->y - pvecY*(m_w/2.0f));
painter->drawLine(x1, y1, x2, y2);
}
void KivioArrowHead::paintMidPipe( KivioArrowHeadData *d )
{
KivioPainter *painter = d->painter;
float vecX = d->vecX;
float vecY = d->vecY;
KoZoomHandler* zoomHandler = d->zoomHandler;
float nvecX, nvecY; // normalized vectors
float pvecX, pvecY; // normal perpendicular vector
float length = sqrt( vecX*vecX + vecY*vecY );
nvecX = - vecX / length;
nvecY = - vecY / length;
pvecX = nvecY;
pvecY = -nvecX;
int x1 = zoomHandler->zoomItX((d->x + nvecX * (m_l/2.0f)) + pvecX*(m_w/2.0f));
int y1 = zoomHandler->zoomItY((d->y + nvecY * (m_l/2.0f)) + pvecY*(m_w/2.0f));
int x2 = zoomHandler->zoomItX((d->x + nvecX * (m_l/2.0f)) - pvecX*(m_w/2.0f));
int y2 = zoomHandler->zoomItY((d->y + nvecY * (m_l/2.0f)) - pvecY*(m_w/2.0f));
painter->drawLine(x1, y1, x2, y2);
}