Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdeedu@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 356 insertions, 0 deletions

diff --git a/kig/objects/circle_imp.cc b/kig/objects/circle_imp.cc
new file mode 100644
index 00000000..13ceef93
--- /dev/null
+++ b/kig/objects/circle_imp.cc
@@ -0,0 +1,356 @@
+// Copyright (C)  2003  Dominique Devriese <devriese@kde.org>
+
+// 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 "circle_imp.h"
+
+#include "bogus_imp.h"
+#include "point_imp.h"
+
+#include "../misc/kigtransform.h"
+#include "../misc/kigpainter.h"
+#include "../misc/coordinate_system.h"
+
+#include "../kig/kig_document.h"
+#include "../kig/kig_view.h"
+
+#include <klocale.h>
+
+#include <math.h>
+
+CircleImp::CircleImp( const Coordinate& center, double radius )
+  : mcenter( center ), mradius( radius )
+{
+}
+
+CircleImp::~CircleImp()
+{
+}
+
+ObjectImp* CircleImp::transform( const Transformation& t ) const
+{
+  if ( t.isHomothetic() )
+  {
+    Coordinate nc = t.apply( mcenter );
+    double nr = t.apply( mradius );
+    if ( nc.valid() )
+      return new CircleImp( nc, nr );
+    else return new InvalidImp;
+  }
+  else
+  {
+    // domi: i should return a ConicImp here, but i don't know how to
+    // calculate it..
+    return Parent::transform( t );
+  };
+}
+
+void CircleImp::draw( KigPainter& p ) const
+{
+  p.drawCircle( mcenter, mradius );
+}
+
+bool CircleImp::contains( const Coordinate& p, int width, const KigWidget& w ) const
+{
+  return fabs((mcenter - p).length() - mradius) <= w.screenInfo().normalMiss( width );
+}
+
+bool CircleImp::inRect( const Rect& r, int width, const KigWidget& w ) const
+{
+  // first we check if the rect contains at least one of the
+  // north/south/east/west points of the circle
+  if ( r.contains( mcenter + Coordinate( 0, -mradius ) ) ) return true;
+  if ( r.contains( mcenter + Coordinate( mradius, 0 ) ) ) return true;
+  if ( r.contains( mcenter + Coordinate( 0, mradius ) ) ) return true;
+  if ( r.contains( mcenter + Coordinate( -mradius, 0 ) ) ) return true;
+
+  // we allow a miss of some pixels ..
+  double miss = w.screenInfo().normalMiss( width );
+  double bigradius = mradius + miss;
+  bigradius *= bigradius;
+  double smallradius = mradius - miss;
+  smallradius *= smallradius;
+
+  const int in = -1;
+  const int undecided = 0;
+  const int out = 1;
+
+  int inorout = undecided;
+
+  Coordinate coords[4];
+  coords[0] = r.topLeft();
+  coords[1] = r.topRight();
+  coords[2] = r.bottomRight();
+  coords[3] = r.bottomLeft();
+
+  // we check if the corners of the rect are either
+  for ( Coordinate* i = coords; i < coords + 4; ++i )
+  {
+    double t = ( *i - mcenter ).squareLength();
+    if ( t >= bigradius )
+    {
+      if ( inorout == in ) return true;
+      inorout = out;
+    }
+    else if ( t <= smallradius )
+    {
+      if ( inorout == out ) return true;
+      inorout = in;
+    }
+  }
+  return inorout == undecided;
+}
+
+bool CircleImp::valid() const
+{
+  return true;
+}
+
+const uint CircleImp::numberOfProperties() const
+{
+  // We _intentionally_ do not use the Conic properties..
+  return CurveImp::numberOfProperties() + 7;
+}
+
+const QCStringList CircleImp::propertiesInternalNames() const
+{
+  QCStringList l = CurveImp::propertiesInternalNames();
+  l << "surface";
+  l << "circumference";
+  l << "radius";
+  l << "center";
+  l << "cartesian-equation";
+  l << "simply-cartesian-equation";
+  l << "polar-equation";
+  assert( l.size() == CircleImp::numberOfProperties() );
+  return l;
+}
+
+const QCStringList CircleImp::properties() const
+{
+  QCStringList l = CurveImp::properties();
+  l << I18N_NOOP( "Surface" );
+  l << I18N_NOOP( "Circumference" );
+  l << I18N_NOOP( "Radius" );
+  l << I18N_NOOP( "Center" );
+  l << I18N_NOOP( "Expanded Cartesian Equation" );
+  l << I18N_NOOP( "Cartesian Equation" );
+  l << I18N_NOOP( "Polar Equation" );
+  assert( l.size() == CircleImp::numberOfProperties() );
+  return l;
+}
+
+const ObjectImpType* CircleImp::impRequirementForProperty( uint which ) const
+{
+  if ( which < CurveImp::numberOfProperties() )
+    return CurveImp::impRequirementForProperty( which );
+  else return CircleImp::stype();
+}
+
+const char* CircleImp::iconForProperty( uint which ) const
+{
+  assert( which < CircleImp::numberOfProperties() );
+  if ( which < CurveImp::numberOfProperties() )
+    return CurveImp::iconForProperty( which );
+  else if ( which == CurveImp::numberOfProperties() )
+    return "areaCircle"; // surface
+  else if ( which == CurveImp::numberOfProperties() + 1 )
+    return "circumference"; // circumference
+  else if ( which == CurveImp::numberOfProperties() + 2 )
+    return "";  //radius
+  else if ( which == CurveImp::numberOfProperties() + 3 )
+    return "baseCircle"; // circle center
+  else if ( which == CurveImp::numberOfProperties() + 4 )
+    return "kig_text"; // cartesian equation
+  else if ( which == CurveImp::numberOfProperties() + 5 )
+    return "kig_text"; // simply cartesian equation
+  else if ( which == CurveImp::numberOfProperties() + 6 )
+    return "kig_text"; // polar equation
+  else assert( false );
+  return "";
+}
+
+ObjectImp* CircleImp::property( uint which, const KigDocument& w ) const
+{
+  assert( which < CircleImp::numberOfProperties() );
+  if ( which < CurveImp::numberOfProperties() )
+    return CurveImp::property( which, w );
+  if ( which == CurveImp::numberOfProperties() )
+    return new DoubleImp( surface() );
+  else if ( which == CurveImp::numberOfProperties() + 1 )
+    return new DoubleImp( circumference() );
+  else if ( which == CurveImp::numberOfProperties() + 2 )
+    return new DoubleImp( radius() );
+  else if ( which == CurveImp::numberOfProperties() + 3 )
+    return new PointImp( center() );
+  else if ( which == CurveImp::numberOfProperties() + 4 )
+    return new StringImp( cartesianEquationString( w ) );
+  else if ( which == CurveImp::numberOfProperties() + 5 )
+    return new StringImp( simplyCartesianEquationString( w ) );
+  else if ( which == CurveImp::numberOfProperties() + 6 )
+    return new StringImp( polarEquationString( w ) );
+  else assert( false );
+  return new InvalidImp;
+}
+
+const Coordinate CircleImp::center() const
+{
+  return mcenter;
+}
+
+double CircleImp::radius() const
+{
+  return mradius;
+}
+
+double CircleImp::surface() const
+{
+  return M_PI * squareRadius();
+}
+
+double CircleImp::squareRadius() const
+{
+  return mradius * mradius;
+}
+
+double CircleImp::circumference() const
+{
+  return 2 * M_PI * radius();
+}
+
+QString CircleImp::polarEquationString( const KigDocument& w ) const
+{
+  QString ret = i18n( "rho = %1   [centered at %2]" );
+  ConicPolarData data = polarData();
+  ret = ret.arg( data.pdimen, 0, 'g', 3 );
+  ret = ret.arg( w.coordinateSystem().fromScreen( data.focus1, w ) );
+  return ret;
+}
+
+QString CircleImp::cartesianEquationString( const KigDocument& ) const
+{
+  QString ret = i18n( "x² + y² + %1 x + %2 y + %3 = 0" );
+  ConicCartesianData data = cartesianData();
+  ret = ret.arg( data.coeffs[3], 0, 'g', 3 );
+  ret = ret.arg( data.coeffs[4], 0, 'g', 3 );
+  ret = ret.arg( data.coeffs[5], 0, 'g', 3 );
+  return ret;
+}
+
+QString CircleImp::simplyCartesianEquationString( const KigDocument& ) const
+{
+  QString ret = i18n( "( x - %1 )² + ( y - %2 )² = %3" );
+  ret = ret.arg( mcenter.x, 0, 'g', 3 );
+  ret = ret.arg( mcenter.y, 0, 'g', 3 );
+  ret = ret.arg( mradius * mradius, 0, 'g', 3 );
+  return ret;
+}
+
+Coordinate CircleImp::focus1() const
+{
+  return center();
+}
+
+Coordinate CircleImp::focus2() const
+{
+  return center();
+}
+
+int CircleImp::conicType() const
+{
+  return 1;
+}
+
+const ConicCartesianData CircleImp::cartesianData() const
+{
+  Coordinate c = center();
+  double sqr = squareRadius();
+  ConicCartesianData data(
+    1.0, 1.0, 0.0, -2*c.x, -2*c.y,
+    c.x*c.x + c.y*c.y - sqr );
+  return data;
+}
+
+const ConicPolarData CircleImp::polarData() const
+{
+  return ConicPolarData( center(), radius(), 0, 0 );
+}
+
+CircleImp* CircleImp::copy() const
+{
+  return new CircleImp( mcenter, mradius );
+}
+
+double CircleImp::getParam( const Coordinate& point, const KigDocument& ) const
+{
+  Coordinate tmp = point - mcenter;
+  double ret = atan2(tmp.y, tmp.x) / ( 2 * M_PI );
+  if ( ret > 0 ) return ret;
+  else return ret + 1;
+}
+
+const Coordinate CircleImp::getPoint( double p, const KigDocument& ) const
+{
+  return mcenter + Coordinate (cos(p * 2 * M_PI), sin(p * 2 * M_PI)) * mradius;
+}
+
+void CircleImp::visit( ObjectImpVisitor* vtor ) const
+{
+  vtor->visit( this );
+}
+
+bool CircleImp::equals( const ObjectImp& rhs ) const
+{
+  return rhs.inherits( CircleImp::stype() ) &&
+    static_cast<const CircleImp&>( rhs ).center() == center() &&
+    static_cast<const CircleImp&>( rhs ).radius() == radius();
+}
+
+const ObjectImpType* CircleImp::stype()
+{
+  static const ObjectImpType t(
+    Parent::stype(), "circle",
+    I18N_NOOP( "circle" ),
+    I18N_NOOP( "Select this circle" ),
+    I18N_NOOP( "Select circle %1" ),
+    I18N_NOOP( "Remove a Circle" ),
+    I18N_NOOP( "Add a Circle" ),
+    I18N_NOOP( "Move a Circle" ),
+    I18N_NOOP( "Attach to this circle" ),
+    I18N_NOOP( "Show a Circle" ),
+    I18N_NOOP( "Hide a Circle" )
+    );
+  return &t;
+}
+
+const ObjectImpType* CircleImp::type() const
+{
+  return CircleImp::stype();
+}
+
+bool CircleImp::isPropertyDefinedOnOrThroughThisImp( uint which ) const
+{
+  assert( which < CircleImp::numberOfProperties() );
+  if ( which < CurveImp::numberOfProperties() )
+    return CurveImp::isPropertyDefinedOnOrThroughThisImp( which );
+  return false;
+}
+
+Rect CircleImp::surroundingRect() const
+{
+  Coordinate d( mradius, mradius );
+  return Rect( mcenter - d, mcenter + d );
+}