| /* |
| * Copyright 1998-2005 Sun Microsystems, Inc. All Rights Reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Sun designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Sun in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| */ |
| |
| #ifdef HEADLESS |
| #error This file should not be included in headless library |
| #endif |
| |
| #include <Xm/Display.h> |
| #include "awt_Component.h" |
| #include "awt_Cursor.h" |
| #include "java_awt_Cursor.h" |
| #include <X11/cursorfont.h> |
| |
| #include "jni.h" |
| #include "jni_util.h" |
| |
| /* fieldIDs for Cursor fields that may be accessed from C */ |
| struct CursorIDs cursorIDs; |
| extern struct MComponentPeerIDs mComponentPeerIDs; |
| |
| static jweak curComp = 0; |
| |
| /* |
| * Class: java_awt_Cursor |
| * Method: initIDs |
| * Signature: ()V |
| */ |
| /* |
| * This function gets called from the static initializer for Cursor.java |
| * to initialize the fieldIDs for fields that may be accessed from C |
| */ |
| JNIEXPORT void JNICALL |
| Java_java_awt_Cursor_initIDs(JNIEnv *env, jclass cls) |
| { |
| cursorIDs.type = (*env)->GetFieldID(env, cls, "type", "I"); |
| cursorIDs.mSetPData = (*env)->GetMethodID(env, cls, "setPData", "(J)V"); |
| cursorIDs.pData = (*env)->GetFieldID(env, cls, "pData", "J"); |
| } |
| |
| /* |
| * A utility to retrieve cursor from java.awt.Cursor |
| * Create and save the cursor first if it is not yet |
| */ |
| Cursor getCursor(JNIEnv *env, jobject jCur) |
| { |
| int32_t cursorType = 0; |
| Cursor xcursor; |
| |
| xcursor = (Cursor)(*env)->GetLongField(env, jCur, cursorIDs.pData); |
| |
| if (xcursor != None) { |
| return xcursor; |
| } |
| |
| cursorType = (*env)->GetIntField(env, jCur, cursorIDs.type); |
| |
| DASSERT(cursorType != java_awt_Cursor_CUSTOM_CURSOR); |
| |
| switch (cursorType) { |
| case java_awt_Cursor_DEFAULT_CURSOR: |
| cursorType = XC_left_ptr; |
| break; |
| case java_awt_Cursor_CROSSHAIR_CURSOR: |
| cursorType = XC_crosshair; |
| break; |
| case java_awt_Cursor_TEXT_CURSOR: |
| cursorType = XC_xterm; |
| break; |
| case java_awt_Cursor_WAIT_CURSOR: |
| cursorType = XC_watch; |
| break; |
| case java_awt_Cursor_SW_RESIZE_CURSOR: |
| cursorType = XC_bottom_left_corner; |
| break; |
| case java_awt_Cursor_NW_RESIZE_CURSOR: |
| cursorType = XC_top_left_corner; |
| break; |
| case java_awt_Cursor_SE_RESIZE_CURSOR: |
| cursorType = XC_bottom_right_corner; |
| break; |
| case java_awt_Cursor_NE_RESIZE_CURSOR: |
| cursorType = XC_top_right_corner; |
| break; |
| case java_awt_Cursor_S_RESIZE_CURSOR: |
| cursorType = XC_bottom_side; |
| break; |
| case java_awt_Cursor_N_RESIZE_CURSOR: |
| cursorType = XC_top_side; |
| break; |
| case java_awt_Cursor_W_RESIZE_CURSOR: |
| cursorType = XC_left_side; |
| break; |
| case java_awt_Cursor_E_RESIZE_CURSOR: |
| cursorType = XC_right_side; |
| break; |
| case java_awt_Cursor_HAND_CURSOR: |
| cursorType = XC_hand2; |
| break; |
| case java_awt_Cursor_MOVE_CURSOR: |
| cursorType = XC_fleur; |
| break; |
| } |
| xcursor = XCreateFontCursor(awt_display, cursorType); |
| |
| (*env)->CallVoidMethod(env, jCur, cursorIDs.mSetPData, xcursor); |
| return xcursor; |
| } |
| |
| /* |
| * Class: java_awt_Cursor |
| * Method: finalizeImpl |
| * Signature: ()V |
| */ |
| JNIEXPORT void JNICALL |
| Java_java_awt_Cursor_finalizeImpl(JNIEnv *env, jclass clazz, jlong pData) |
| { |
| Cursor xcursor; |
| |
| xcursor = (Cursor)pData; |
| if (xcursor != None) { |
| AWT_LOCK(); |
| XFreeCursor(awt_display, xcursor); |
| AWT_UNLOCK(); |
| } |
| } |
| |
| /* |
| * normal replace : CACHE_UDPATE => update curComp and updateCursor |
| * not replace : UPDATE_ONLY => intact curComp but updateCursor |
| * only replace : CACHE_ONLY => update curComp only, not updateCursor |
| * |
| * This function should only be called under AWT_LOCK(). Otherwise |
| * multithreaded access can corrupt the value of curComp variable. |
| */ |
| void updateCursor(XPointer client_data, int32_t replace) { |
| |
| static jclass globalCursorManagerClass = NULL; |
| static jmethodID updateCursorID = NULL; |
| |
| JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); |
| jobject peer = (jobject) client_data; |
| jobject target; |
| |
| if ((*env)->PushLocalFrame(env, 16) < 0) |
| return; |
| |
| target = (*env)->GetObjectField(env, peer, mComponentPeerIDs.target); |
| if (replace != UPDATE_ONLY) { |
| if (!JNU_IsNull(env, curComp)) { |
| (*env)->DeleteWeakGlobalRef(env, curComp); |
| } |
| curComp = (*env)->NewWeakGlobalRef(env, target); |
| if (replace == CACHE_ONLY) { |
| (*env)->PopLocalFrame(env, 0); |
| return; |
| } |
| } |
| |
| /* Initialize our java identifiers once. Checking before locking |
| * is a huge performance win. |
| */ |
| if (globalCursorManagerClass == NULL) { |
| jobject sysClass = (*env)->FindClass(env, "sun/awt/motif/MGlobalCursorManager"); |
| if (sysClass != NULL) { |
| /* Make this class 'sticky', we don't want it GC'd */ |
| globalCursorManagerClass = (*env)->NewGlobalRef(env, sysClass); |
| |
| updateCursorID = (*env)->GetStaticMethodID(env, |
| globalCursorManagerClass, |
| "nativeUpdateCursor", |
| "(Ljava/awt/Component;)V" |
| ); |
| } |
| if (JNU_IsNull(env, globalCursorManagerClass) || updateCursorID == NULL) { |
| JNU_ThrowClassNotFoundException(env, "sun/awt/motif/MGlobalCursorManager"); |
| (*env)->PopLocalFrame(env, 0); |
| return; |
| } |
| } /* globalCursorManagerClass == NULL*/ |
| |
| (*env)->CallStaticVoidMethod(env, globalCursorManagerClass, |
| updateCursorID, target); |
| DASSERT(!((*env)->ExceptionOccurred(env))); |
| (*env)->PopLocalFrame(env, 0); |
| } |
| |
| /* |
| * Only call this function under AWT_LOCK(). Otherwise multithreaded |
| * access can corrupt the value of curComp variable. |
| */ |
| jobject getCurComponent() { |
| JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); |
| return (*env)->NewLocalRef(env, curComp); |
| } |