gomp-20050608-branch/libjava/classpath/native/jni/qt-peer/qmatrix.cpp

   1 /* qmatrix.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 <QMatrix>
  40 #include <gnu_java_awt_peer_qt_QMatrix.h>
  41 #include "nativewrapper.h"
  42
  43 /*
  44  * Creates a QMatrix
  45  */
  46 JNIEXPORT void JNICALL Java_gnu_java_awt_peer_qt_QMatrix_init
  47 (JNIEnv *env, jobject obj, jdouble m00, jdouble m10, jdouble m01, jdouble m11,
  48  jdouble m02, jdouble m12 )
  49 {
  50   QMatrix *matrix = new QMatrix( (qreal) m00, (qreal) m10,
  51                                  (qreal) m01, (qreal) m11,
  52                                  (qreal) m02, (qreal) m12 );
  53   assert( matrix );
  54   setNativeObject(env, obj, matrix);
  55 }
  56
  57 /*
  58  * Returns the matrix a java array of doubles,
  59  * in m00, m10, m01, m11, m02, m12 (java notation) format.
  60  * Note that qt has different notations for the array elements.
  61  */
  62 JNIEXPORT jdoubleArray JNICALL Java_gnu_java_awt_peer_qt_QMatrix_getMatrix
  63 (JNIEnv *env, jobject obj)
  64 {
  65   QMatrix *matrix = (QMatrix *)getNativeObject(env, obj);
  66   assert( matrix );
  67
  68   jdoubleArray result_array;
  69   jdouble *dst;
  70
  71   result_array = env->NewDoubleArray( 6 );
  72   dst = env->GetDoubleArrayElements(result_array, NULL);
  73
  74   dst[0] = (jdouble)matrix->m11(); // qt m11 = java m00
  75   dst[1] = (jdouble)matrix->m12(); // qt m12 = java m10
  76   dst[2] = (jdouble)matrix->m21(); // qt m21 = java m01
  77   dst[3] = (jdouble)matrix->m22(); // qt m22 = java m11
  78   dst[4] = (jdouble)matrix->dx();  // qt dx  = java m02
  79   dst[5] = (jdouble)matrix->dy();  // qt dy  = java m12
  80
  81   env->ReleaseDoubleArrayElements (result_array, dst, 0);
  82   return result_array;
  83 }
  84
  85 /*
  86  * Dispose of the thing.
  87  */
  88 JNIEXPORT void JNICALL Java_gnu_java_awt_peer_qt_QMatrix_dispose
  89 (JNIEnv *env, jobject obj)
  90 {
  91   QMatrix *matrix = (QMatrix *)getNativeObject(env, obj);
  92   if( matrix )
  93     delete matrix;
  94   setNativeObject(env, obj, NULL);
  95 }
  96