1 /*

     2  * Copyright 1997-2003 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Sun designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Sun in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    22  * CA 95054 USA or visit www.sun.com if you need additional information or

    23  * have any questions.

    24  */

    25 

    26 #ifdef HEADLESS

    27     #error This file should not be included in headless library

    28 #endif

    29 

    30 #include "awt_p.h"

    31 #include "java_awt_Cursor.h"

    32 #include "awt_Cursor.h"

    33 #include "sun_awt_motif_MCustomCursor.h"

    34 

    35 #include "jni.h"

    36 #include "jni_util.h"

    37 

    38 extern struct CursorIDs cursorIDs;

    39 static jfieldID widthID;

    40 static jfieldID heightID;

    41 

    42 /*

    43  * Class:     sun_awt_motif_MCustomCursor

    44  * Method:    cacheInit

    45  * Signature: ()V

    46  */

    47 JNIEXPORT void JNICALL Java_sun_awt_motif_MCustomCursor_cacheInit

    48   (JNIEnv *env, jclass cls)

    49 {

    50     jclass clsDimension = (*env)->FindClass(env, "java/awt/Dimension");

    51     widthID = (*env)->GetFieldID(env, clsDimension, "width", "I");

    52     heightID = (*env)->GetFieldID(env, clsDimension, "height", "I");

    53 }

    54 

    55 /*

    56  * Class:     sun_awt_motif_MCustomCursor

    57  * Method:    queryBestCursor

    58  * Signature: (Ljava/awt/Dimension;)V

    59  */

    60 JNIEXPORT void JNICALL Java_sun_awt_motif_MCustomCursor_queryBestCursor

    61   (JNIEnv *env, jclass cls, jobject dimension)

    62 {

    63     Window root;

    64     uint32_t width, height;

    65 

    66     AWT_LOCK();

    67     root = RootWindow(awt_display, DefaultScreen(awt_display));

    68     XQueryBestCursor(awt_display, root,

    69                      (*env)->GetIntField(env, dimension, widthID),

    70                      (*env)->GetIntField(env, dimension, heightID),

    71                      &width, &height);

    72     (*env)->SetIntField(env, dimension, widthID, (int32_t) width);

    73     (*env)->SetIntField(env, dimension, heightID, (int32_t) height);

    74     AWT_UNLOCK();

    75 }

    76 

    77 /*

    78  * Class:     sun_awt_motif_MCustomCursor

    79  * Method:    createCursor

    80  * Signature: ([B[BIIII)V

    81  */

    82 JNIEXPORT void JNICALL Java_sun_awt_motif_MCustomCursor_createCursor

    83   (JNIEnv *env , jobject this, jbyteArray xorMask, jbyteArray andMask,

    84    jint width, jint height, jint fc, jint bc, jint xHotSpot, jint yHotSpot)

    85 {

    86     Cursor cursor;

    87     char *sourceBits, *maskBits;

    88     Window root;

    89     Pixmap source, mask;

    90     XColor fcolor, bcolor;

    91     AwtGraphicsConfigDataPtr defaultConfig =

    92         getDefaultConfig(DefaultScreen(awt_display));

    93 

    94     AWT_LOCK();

    95 

    96     root = RootWindow(awt_display, DefaultScreen(awt_display));

    97     fcolor.flags = DoRed | DoGreen | DoBlue;

    98     fcolor.red = ((fc >> 16) & 0x000000ff) << 8;

    99     fcolor.green = ((fc >> 8) & 0x000000ff) << 8;

   100     fcolor.blue = ((fc >> 0) & 0x000000ff) << 8;

   101     XAllocColor(awt_display, defaultConfig->awt_cmap, &fcolor);

   102     bcolor.flags = DoRed | DoGreen | DoBlue;

   103     bcolor.red = ((bc >> 16) & 0x000000ff) << 8;

   104     bcolor.green = ((bc >> 8) & 0x000000ff) << 8;

   105     bcolor.blue = ((bc >> 0) & 0x000000ff) << 8;

   106     XAllocColor(awt_display, defaultConfig->awt_cmap, &bcolor);

   107 

   108     /* Create source pixmap. */

   109     sourceBits = (char *)(*env)->GetPrimitiveArrayCritical(env, xorMask, NULL);

   110     source = XCreateBitmapFromData(awt_display, root, sourceBits,

   111                                          width, height);

   112 

   113     /* Create mask pixmap */

   114     maskBits = (char *)(*env)->GetPrimitiveArrayCritical(env, andMask, NULL);

   115     mask = XCreateBitmapFromData(awt_display, root, maskBits,

   116                                        width, height);

   117 

   118     /* Create cursor */

   119     cursor = XCreatePixmapCursor(awt_display, source, mask, &fcolor, &bcolor,

   120                                  xHotSpot, yHotSpot);

   121 

   122     /* Free resources */

   123     XFreePixmap(awt_display, source);

   124     XFreePixmap(awt_display, mask);

   125 

   126     (*env)->ReleasePrimitiveArrayCritical(env, xorMask, sourceBits, JNI_ABORT);

   127     (*env)->ReleasePrimitiveArrayCritical(env, andMask, maskBits, JNI_ABORT);

   128 

   129         JNU_SetLongFieldFromPtr(env, this, cursorIDs.pData, cursor);

   130 

   131     AWT_FLUSH_UNLOCK();

   132 }