old-autovect-branch/libjava/classpath/native/jni/qt-peer/qpainterpath.cpp

   1 /* qpainterpath.cpp --
   2    Copyright (C)  2005  Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38 #include <assert.h>
  39 #include <QPainterPath>
  40 #include <gnu_java_awt_peer_qt_QPainterPath.h>
  41 #include "nativewrapper.h"
  42
  43 // java.awt.geom.PathIterator constants.
  44 #define WIND_EVEN_ODD 0
  45 #define WIND_NON_ZERO 1
  46
  47
  48 /*
  49  * Creates an empty QPainterPath.
  50  */
  51 JNIEXPORT void JNICALL Java_gnu_java_awt_peer_qt_QPainterPath_init
  52 (JNIEnv *env, jobject obj, jint windingRule)
  53 {
  54   QPainterPath *path = new QPainterPath();
  55   assert( path );
  56   path->setFillRule( (windingRule == WIND_EVEN_ODD) ?
  57                      Qt::OddEvenFill : Qt::WindingFill );
  58   setNativeObject(env, obj, path);
  59 }
  60
  61 /*
  62  * MoveTo
  63  */
  64 JNIEXPORT void JNICALL Java_gnu_java_awt_peer_qt_QPainterPath_moveTo
  65 (JNIEnv *env, jobject obj, jdouble x, jdouble y)
  66 {
  67   QPainterPath *path = (QPainterPath *)getNativeObject(env, obj);
  68   assert( path );
  69   path->moveTo( (qreal)x, (qreal)y );
  70 }
  71
  72 /*
  73  * Closes the subpath.
  74  */
  75 JNIEXPORT void JNICALL Java_gnu_java_awt_peer_qt_QPainterPath_close
  76 (JNIEnv *env, jobject obj)
  77 {
  78   QPainterPath *path = (QPainterPath *)getNativeObject(env, obj);
  79   assert( path );
  80   path->closeSubpath();
  81 }
  82
  83 /*
  84  * LineTo
  85  */
  86 JNIEXPORT void JNICALL Java_gnu_java_awt_peer_qt_QPainterPath_lineTo
  87 (JNIEnv *env, jobject obj, jdouble x, jdouble y)
  88 {
  89   QPainterPath *path = (QPainterPath *)getNativeObject(env, obj);
  90   assert( path );
  91   path->lineTo( (qreal)x, (qreal)y );
  92 }
  93
  94 /*
  95  * QuadraticTo
  96  */
  97 JNIEXPORT void JNICALL Java_gnu_java_awt_peer_qt_QPainterPath_quadTo
  98 (JNIEnv *env, jobject obj, jdouble x, jdouble y, jdouble x2, jdouble y2)
  99 {
 100   QPainterPath *path = (QPainterPath *)getNativeObject(env, obj);
 101   assert( path );
 102   path->quadTo( (qreal)x, (qreal)y, (qreal)x2, (qreal)y2 );
 103 }
 104
 105 /*
 106  * CubicTo
 107  */
 108 JNIEXPORT void JNICALL Java_gnu_java_awt_peer_qt_QPainterPath_cubicTo
 109 (JNIEnv *env, jobject obj, jdouble x, jdouble y, jdouble x2, jdouble y2,
 110  jdouble x3, jdouble y3)
 111 {
 112   QPainterPath *path = (QPainterPath *)getNativeObject(env, obj);
 113   assert( path );
 114   path->cubicTo( (qreal)x, (qreal)y,
 115                  (qreal)x2, (qreal)y2,
 116                  (qreal)x3, (qreal)y3 );
 117 }
 118
 119 /*
 120  * Delete the native object
 121  */
 122 JNIEXPORT void JNICALL Java_gnu_java_awt_peer_qt_QPainterPath_dispose
 123   (JNIEnv *env, jobject obj)
 124 {
 125   QPainterPath *path = (QPainterPath *)getNativeObject(env, obj);
 126   if ( path )
 127     delete path;
 128 }
 129
 130 /********* GeneralPath functions *****************************/
 131
 132 // FIXME : Cache method ids.
 133
 134 static void gp_moveTo( JNIEnv *env,
 135                        jobject gp,
 136                        jclass cls,
 137                        double x1,
 138                        double y1 )
 139 {
 140   jmethodID method;
 141   jvalue values[2];
 142
 143   values[0].f = (jfloat) x1;
 144   values[1].f = (jfloat) y1;
 145
 146   method = env->GetMethodID(cls, "moveTo", "(FF)V");
 147   env->CallVoidMethodA( gp, method, values );
 148 }
 149
 150 static void gp_lineTo( JNIEnv *env,
 151                        jobject gp,
 152                        jclass cls,
 153                        double x1,
 154                        double y1 )
 155 {
 156   jmethodID method;
 157   jvalue values[2];
 158
 159   values[0].f = (jfloat) x1;
 160   values[1].f = (jfloat) y1;
 161
 162   method = env->GetMethodID(cls, "lineTo", "(FF)V");
 163   env->CallVoidMethodA( gp, method, values );
 164 }
 165
 166 static void gp_curveTo( JNIEnv *env,
 167                         jobject gp,
 168                         jclass cls,
 169                         double x1,
 170                         double y1,
 171                         double x2,
 172                         double y2,
 173                         double x3,
 174                         double y3 )
 175 {
 176   jmethodID method;
 177   jvalue values[6];
 178
 179   values[0].f = (jfloat) x1;
 180   values[1].f = (jfloat) y1;
 181   values[2].f = (jfloat) x2;
 182   values[3].f = (jfloat) y2;
 183   values[4].f = (jfloat) x3;
 184   values[5].f = (jfloat) y3;
 185
 186   method = env->GetMethodID(cls, "curveTo", "(FFFFFF)V");
 187   env->CallVoidMethodA( gp, method, values );
 188 }
 189
 190 /**
 191  * Returns the QPainterPath obj as a java.awt.geom.GeneralPath.
 192  */
 193 JNIEXPORT jobject JNICALL Java_gnu_java_awt_peer_qt_QPainterPath_getPath
 194 (JNIEnv *env, jobject obj)
 195 {
 196   jclass cls;
 197   jmethodID method;
 198   jobject gp;
 199   QPainterPath::Element currElement;
 200   int windingRule;
 201
 202   QPainterPath *path = new QPainterPath();
 203   assert( path );
 204
 205   windingRule = (path->fillRule() == Qt::OddEvenFill) ?
 206     WIND_EVEN_ODD : WIND_NON_ZERO;
 207
 208   cls = env->FindClass("java/awt/geom/GeneralPath");
 209   method = env->GetMethodID(cls, "<init>", "(I)V");
 210   gp = env->NewObject(cls, method, windingRule);
 211
 212   for( int i = 0; i < path->elementCount(); i++)
 213     {
 214       currElement = path->elementAt( i );
 215       switch(currElement.type)
 216         {
 217         case QPainterPath::MoveToElement:
 218           gp_moveTo(env, gp, cls, currElement.x, currElement.y);
 219           break;
 220         case QPainterPath::LineToElement:
 221           gp_lineTo(env, gp, cls, currElement.x, currElement.y);
 222           break;
 223         case QPainterPath::CurveToElement:
 224           if( i + 2 >= path->elementCount() )
 225             break;
 226           if(path->elementAt(i + 1).type != QPainterPath::CurveToDataElement ||
 227              path->elementAt(i + 2).type != QPainterPath::CurveToDataElement)
 228             break;
 229           gp_curveTo(env, gp, cls, currElement.x, currElement.y,
 230                      path->elementAt(i + 1).x, path->elementAt(i + 1).y,
 231                      path->elementAt(i + 2).x, path->elementAt(i + 2).y );
 232           i += 2;
 233           break;
 234         }
 235     }
 236   env->DeleteLocalRef( cls );
 237   return gp;
 238 }
 239