rev 54094 : 8257853: Remove dependencies on JNF's JNI utility functions in AWT and 2D code
rev 54096 : 8259651: [macOS] Replace JNF_COCOA_ENTER/EXIT macros
rev 54097 : 8259869: [macOS] Remove desktop module dependencies on JNF Reference APIs
rev 54098 : 8260616: Removing remaining JNF dependencies in the java.desktop module
8259729: Missed JNFInstanceOf -> IsInstanceOf conversion

   1 /*
   2  * Copyright (c) 2011, 2015, Oracle and/or its affiliates. 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 #import "AWT_debug.h"
  27 
  28 #import "JNIUtilities.h"
  29 #import "ThreadUtilities.h"
  30 


  31 #define MAX_DISPLAYS 64
  32 
  33 /*
  34  * Class:     sun_awt_CGraphicsEnvironment
  35  * Method:    getDisplayIDs
  36  * Signature: ()[I
  37  */
  38 JNIEXPORT jintArray JNICALL
  39 Java_sun_awt_CGraphicsEnvironment_getDisplayIDs
  40 (JNIEnv *env, jclass class)
  41 {
  42     jintArray ret = NULL;
  43 
  44 JNI_COCOA_ENTER(env);
  45 
  46     /* Get the count */
  47     CGDisplayCount displayCount;
  48     if (CGGetOnlineDisplayList(MAX_DISPLAYS, NULL, &displayCount) != kCGErrorSuccess) {
  49         JNU_ThrowInternalError(env, "CGGetOnlineDisplayList() failed to get display count");


  50         return NULL;
  51     }
  52 
  53     /* Allocate an array and get the size list of display Ids */
  54     CGDirectDisplayID displays[MAX_DISPLAYS];
  55     if (CGGetOnlineDisplayList(displayCount, displays, &displayCount) != kCGErrorSuccess) {
  56         JNU_ThrowInternalError(env, "CGGetOnlineDisplayList() failed to get display list");


  57         return NULL;
  58     }
  59 
  60     CGDisplayCount i;
  61     CGDisplayCount displayActiveCount = 0; //Active and sleeping.
  62     for (i = 0; i < displayCount; ++i) {
  63         if (CGDisplayMirrorsDisplay(displays[i]) == kCGNullDirectDisplay) {
  64             ++displayActiveCount;
  65         } else {
  66             displays[i] = kCGNullDirectDisplay;
  67         }
  68     }
  69 
  70     /* Allocate a java array for display identifiers */
  71     ret = (*env)->NewIntArray(env, displayActiveCount);
  72     CHECK_NULL_RETURN(ret, NULL);
  73 
  74     /* Initialize and return the backing int array */
  75     assert(sizeof(jint) >= sizeof(CGDirectDisplayID));
  76     jint *elems = (*env)->GetIntArrayElements(env, ret, 0);
  77     CHECK_NULL_RETURN(elems, NULL);
  78 
  79     /* Filter out the mirrored displays */
  80     for (i = 0; i < displayCount; ++i) {
  81         if (displays[i] != kCGNullDirectDisplay) {
  82             elems[--displayActiveCount] = displays[i];
  83         }
  84     }
  85 
  86     (*env)->ReleaseIntArrayElements(env, ret, elems, 0);
  87 
  88 JNI_COCOA_EXIT(env);
  89 
  90     return ret;
  91 }
  92 
  93 /*
  94  * Class:     sun_awt_CGraphicsEnvironment
  95  * Method:    getMainDisplayID
  96  * Signature: ()I
  97  */
  98 JNIEXPORT jint JNICALL
  99 Java_sun_awt_CGraphicsEnvironment_getMainDisplayID
 100 (JNIEnv *env, jclass class)
 101 {
 102     return CGMainDisplayID();
 103 }
 104 
 105 /*
 106  * Post the display reconfiguration event.
 107  */
 108 static void displaycb_handle
 109 (CGDirectDisplayID display, CGDisplayChangeSummaryFlags flags, void *userInfo)
 110 {
 111     if (flags == kCGDisplayBeginConfigurationFlag) return;
 112 
 113     [ThreadUtilities performOnMainThreadWaiting:NO block:^() {
 114 
 115         JNIEnv *env = [ThreadUtilities getJNIEnvUncached];
 116         jobject cgeRef = (jobject)userInfo;
 117 
 118         jobject graphicsEnv = (*env)->NewLocalRef(env, cgeRef);
 119         if (graphicsEnv == NULL) return; // ref already GC'd
 120         DECLARE_CLASS(jc_CGraphicsEnvironment, "sun/awt/CGraphicsEnvironment");
 121         DECLARE_METHOD(jm_displayReconfiguration,
 122                 jc_CGraphicsEnvironment, "_displayReconfiguration","(IZ)V");
 123         (*env)->CallVoidMethod(env, graphicsEnv, jm_displayReconfiguration,
 124                 (jint) display, (jboolean) flags & kCGDisplayRemoveFlag);
 125         (*env)->DeleteLocalRef(env, graphicsEnv);
 126         CHECK_EXCEPTION();
 127     }];
 128 }
 129 
 130 /*
 131  * Class:     sun_awt_CGraphicsEnvironment
 132  * Method:    registerDisplayReconfiguration
 133  * Signature: ()J
 134  */
 135 JNIEXPORT jlong JNICALL
 136 Java_sun_awt_CGraphicsEnvironment_registerDisplayReconfiguration
 137 (JNIEnv *env, jobject this)
 138 {
 139     jlong ret = 0L;
 140 
 141 JNI_COCOA_ENTER(env);
 142 
 143     jobject cgeRef = (*env)->NewWeakGlobalRef(env, this);
 144 
 145     /* Register the callback */
 146     if (CGDisplayRegisterReconfigurationCallback(&displaycb_handle, cgeRef) != kCGErrorSuccess) {
 147         JNU_ThrowInternalError(env, "CGDisplayRegisterReconfigurationCallback() failed");


 148         return 0L;
 149     }
 150 
 151     ret = ptr_to_jlong(cgeRef);
 152 
 153 JNI_COCOA_EXIT(env);
 154 
 155     return ret;
 156 }
 157 
 158 /*
 159  * Class:     sun_awt_CGraphicsEnvironment
 160  * Method:    deregisterDisplayReconfiguration
 161  * Signature: (J)V
 162  */
 163 JNIEXPORT void JNICALL
 164 Java_sun_awt_CGraphicsEnvironment_deregisterDisplayReconfiguration
 165 (JNIEnv *env, jobject this, jlong p)
 166 {
 167 JNI_COCOA_ENTER(env);
 168 
 169     jobject cgeRef = (jobject)jlong_to_ptr(p);
 170     if (!cgeRef) return;
 171 
 172     /* Remove the registration */
 173     if (CGDisplayRemoveReconfigurationCallback(&displaycb_handle, cgeRef) != kCGErrorSuccess) {
 174         JNU_ThrowInternalError(env, "CGDisplayRemoveReconfigurationCallback() failed, leaking the callback context!");


 175         return;
 176     }
 177 
 178     (*env)->DeleteWeakGlobalRef(env, cgeRef);

 179 
 180 JNI_COCOA_EXIT(env);
 181 }
--- EOF ---