423 lines
12 KiB
C
423 lines
12 KiB
C
/* gtkclipboard.c
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Copyright (C) 1998, 1999, 2005, 2006 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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#include "jcl.h"
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#include "gtkpeer.h"
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#include "gnu_java_awt_peer_gtk_GtkClipboard.h"
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#define OBJECT_TARGET 1
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#define TEXT_TARGET 2
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#define IMAGE_TARGET 3
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#define URI_TARGET 4
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/* The clipboard and selection plus corresponding GtkClipboard objects. */
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GtkClipboard *cp_gtk_clipboard;
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GtkClipboard *cp_gtk_selection;
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jobject cp_gtk_clipboard_instance;
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jobject cp_gtk_selection_instance;
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/* Standard (string targets) shared with GtkSelection. */
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jstring cp_gtk_stringTarget;
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jstring cp_gtk_imageTarget;
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jstring cp_gtk_filesTarget;
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static jclass gtk_clipboard_class;
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static jmethodID setSystemContentsID;
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static jmethodID provideContentID;
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static jmethodID provideTextID;
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static jmethodID provideImageID;
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static jmethodID provideURIsID;
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/* Called when clipboard owner changes. Used to update available targets. */
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#if GTK_MINOR_VERSION > 4
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static void
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clipboard_owner_change_cb (GtkClipboard *clipboard,
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GdkEvent *event __attribute__((unused)),
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gpointer user_data __attribute__((unused)))
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{
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JNIEnv *env = cp_gtk_gdk_env ();
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if (clipboard == cp_gtk_clipboard)
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(*env)->CallVoidMethod (env, cp_gtk_clipboard_instance,
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setSystemContentsID, JNI_FALSE);
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else
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(*env)->CallVoidMethod (env, cp_gtk_selection_instance,
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setSystemContentsID, JNI_FALSE);
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}
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#endif
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JNIEXPORT jboolean JNICALL
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Java_gnu_java_awt_peer_gtk_GtkClipboard_initNativeState (JNIEnv *env,
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jclass clz,
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jobject gtkclipboard,
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jobject gtkselection,
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jstring string,
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jstring image,
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jstring files)
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{
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GdkDisplay* display;
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jboolean can_cache;
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gtk_clipboard_class = clz;
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setSystemContentsID = (*env)->GetMethodID (env, gtk_clipboard_class,
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"setSystemContents",
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"(Z)V");
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if (setSystemContentsID == NULL)
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return JNI_FALSE;
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provideContentID = (*env)->GetMethodID (env, gtk_clipboard_class,
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"provideContent",
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"(Ljava/lang/String;)[B");
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if (provideContentID == NULL)
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return JNI_FALSE;
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provideTextID = (*env)->GetMethodID (env, gtk_clipboard_class,
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"provideText",
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"()Ljava/lang/String;");
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if (provideTextID == NULL)
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return JNI_FALSE;
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provideImageID = (*env)->GetMethodID (env, gtk_clipboard_class,
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"provideImage",
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"()Lgnu/java/awt/peer/gtk/GtkImage;");
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if (provideImageID == NULL)
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return JNI_FALSE;
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provideURIsID = (*env)->GetMethodID (env, gtk_clipboard_class,
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"provideURIs",
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"()[Ljava/lang/String;");
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if (provideURIsID == NULL)
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return JNI_FALSE;
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cp_gtk_clipboard_instance = (*env)->NewGlobalRef(env, gtkclipboard);
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cp_gtk_selection_instance = (*env)->NewGlobalRef(env, gtkselection);
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cp_gtk_stringTarget = (*env)->NewGlobalRef(env, string);
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cp_gtk_imageTarget = (*env)->NewGlobalRef(env, image);
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cp_gtk_filesTarget = (*env)->NewGlobalRef(env, files);
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gdk_threads_enter ();
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cp_gtk_clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
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cp_gtk_selection = gtk_clipboard_get (GDK_SELECTION_PRIMARY);
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display = gtk_clipboard_get_display (cp_gtk_clipboard);
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/* Check for support for clipboard owner changes. */
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#if GTK_MINOR_VERSION > 4
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if (gdk_display_supports_selection_notification (display))
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{
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g_signal_connect (cp_gtk_clipboard, "owner-change",
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G_CALLBACK (clipboard_owner_change_cb), NULL);
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g_signal_connect (cp_gtk_selection, "owner-change",
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G_CALLBACK (clipboard_owner_change_cb), NULL);
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gdk_display_request_selection_notification (display,
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GDK_SELECTION_CLIPBOARD);
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gdk_display_request_selection_notification (display,
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GDK_SELECTION_PRIMARY);
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can_cache = JNI_TRUE;
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}
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else
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#endif
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can_cache = JNI_FALSE;
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gdk_threads_leave ();
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return can_cache;
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}
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static void
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clipboard_get_func (GtkClipboard *clipboard,
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GtkSelectionData *selection,
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guint info,
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gpointer user_data __attribute__((unused)))
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{
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jobject gtk_clipboard_instance;
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JNIEnv *env = cp_gtk_gdk_env ();
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if (clipboard == cp_gtk_clipboard)
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gtk_clipboard_instance = cp_gtk_clipboard_instance;
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else
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gtk_clipboard_instance = cp_gtk_selection_instance;
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if (info == OBJECT_TARGET)
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{
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const gchar *target_name;
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jstring target_string;
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jbyteArray bytes;
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jint len;
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jbyte *barray;
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target_name = gdk_atom_name (selection->target);
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if (target_name == NULL)
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return;
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target_string = (*env)->NewStringUTF (env, target_name);
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if (target_string == NULL)
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return;
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bytes = (*env)->CallObjectMethod(env,
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gtk_clipboard_instance,
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provideContentID,
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target_string);
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(*env)->DeleteLocalRef(env, target_string);
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if (bytes == NULL)
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return;
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len = (*env)->GetArrayLength(env, bytes);
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if (len <= 0)
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return;
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barray = (*env)->GetByteArrayElements(env, bytes, NULL);
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if (barray == NULL)
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return;
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gtk_selection_data_set (selection, selection->target, 8,
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(guchar *) barray, len);
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(*env)->ReleaseByteArrayElements(env, bytes, barray, 0);
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}
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else if (info == TEXT_TARGET)
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{
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jstring string;
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const gchar *text;
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int len;
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string = (*env)->CallObjectMethod(env,
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gtk_clipboard_instance,
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provideTextID);
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if (string == NULL)
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return;
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len = (*env)->GetStringUTFLength (env, string);
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if (len == -1)
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return;
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text = (*env)->GetStringUTFChars (env, string, NULL);
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if (text == NULL)
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return;
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gtk_selection_data_set_text (selection, text, len);
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(*env)->ReleaseStringUTFChars (env, string, text);
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}
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/* Images and URIs/Files support only available with gtk+2.6 or higher. */
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#if GTK_MINOR_VERSION > 4
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else if (info == IMAGE_TARGET)
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{
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jobject gtkimage;
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GdkPixbuf *pixbuf = NULL;
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gtkimage = (*env)->CallObjectMethod(env,
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gtk_clipboard_instance,
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provideImageID);
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if (gtkimage == NULL)
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return;
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pixbuf = cp_gtk_image_get_pixbuf (env, gtkimage);
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if (pixbuf != NULL)
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gtk_selection_data_set_pixbuf (selection, pixbuf);
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}
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else if (info == URI_TARGET)
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{
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jobjectArray uris;
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jint count;
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int i;
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gchar **list;
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uris = (*env)->CallObjectMethod(env,
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gtk_clipboard_instance,
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provideURIsID);
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if (uris == NULL)
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return;
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count = (*env)->GetArrayLength (env, uris);
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if (count <= 0)
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return;
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list = (gchar **) JCL_malloc (env, (count + 1) * sizeof (gchar *));
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for (i = 0; i < count; i++)
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{
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const char *text;
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jstring uri;
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/* Mark NULL in so case of some error we can find the end. */
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list[i] = NULL;
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uri = (*env)->GetObjectArrayElement (env, uris, i);
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if (uri == NULL)
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break;
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text = (*env)->GetStringUTFChars (env, uri, NULL);
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if (text == NULL)
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{
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(*env)->DeleteLocalRef(env, uri);
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break;
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}
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list[i] = strdup (text);
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(*env)->ReleaseStringUTFChars (env, uri, text);
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(*env)->DeleteLocalRef(env, uri);
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}
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if (i == count)
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{
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list[count] = NULL;
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gtk_selection_data_set_uris (selection, list);
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}
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for (i = 0; list[i] != NULL; i++)
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free (list[i]);
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JCL_free (env, list);
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}
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#endif
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}
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static void
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clipboard_clear_func (GtkClipboard *clipboard,
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gpointer user_data __attribute__((unused)))
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{
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JNIEnv *env = cp_gtk_gdk_env();
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if (clipboard == cp_gtk_clipboard)
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(*env)->CallVoidMethod (env, cp_gtk_clipboard_instance,
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setSystemContentsID, JNI_TRUE);
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else
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(*env)->CallVoidMethod (env, cp_gtk_selection_instance,
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setSystemContentsID, JNI_TRUE);
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}
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JNIEXPORT void JNICALL
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Java_gnu_java_awt_peer_gtk_GtkClipboard_advertiseContent
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(JNIEnv *env,
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jobject instance,
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jobjectArray mime_array,
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#if GTK_MINOR_VERSION > 4
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jboolean add_text, jboolean add_images, jboolean add_uris)
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#else
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jboolean add_text __attribute__((unused)),
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jboolean add_images __attribute__((unused)),
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jboolean add_uris __attribute__((unused)))
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#endif
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{
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GtkTargetList *target_list;
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GList *list;
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GtkTargetEntry *targets;
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gint n, i;
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gdk_threads_enter ();
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target_list = gtk_target_list_new (NULL, 0);
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if (mime_array != NULL)
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{
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n = (*env)->GetArrayLength (env, mime_array);
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for (i = 0; i < n; i++)
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{
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const char *text;
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jstring target;
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GdkAtom atom;
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target = (*env)->GetObjectArrayElement (env, mime_array, i);
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if (target == NULL)
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break;
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text = (*env)->GetStringUTFChars (env, target, NULL);
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if (text == NULL)
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break;
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atom = gdk_atom_intern (text, FALSE);
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gtk_target_list_add (target_list, atom, 0, OBJECT_TARGET);
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(*env)->ReleaseStringUTFChars (env, target, text);
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}
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}
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/* Add extra targets that gtk+ can provide/translate for us. */
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#if GTK_MINOR_VERSION > 4
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if (add_text)
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gtk_target_list_add_text_targets (target_list, TEXT_TARGET);
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if (add_images)
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gtk_target_list_add_image_targets (target_list, IMAGE_TARGET, TRUE);
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if (add_uris)
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gtk_target_list_add_uri_targets (target_list, URI_TARGET);
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#else
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if (add_text)
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gtk_target_list_add (target_list,
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gdk_atom_intern ("STRING", FALSE),
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0, TEXT_TARGET);
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#endif
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/* Turn list into a target table. */
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n = g_list_length (target_list->list);
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if (n > 0)
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{
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targets = g_new (GtkTargetEntry, n);
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for (list = target_list->list, i = 0;
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list != NULL;
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list = list->next, i++)
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{
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GtkTargetPair *pair = (GtkTargetPair *) list->data;
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targets[i].target = gdk_atom_name (pair->target);
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targets[i].flags = pair->flags;
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targets[i].info = pair->info;
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}
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/* Set the targets plus callback functions and ask for the clipboard
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to be stored when the application exists if supported. */
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if ((*env)->IsSameObject(env, instance, cp_gtk_clipboard_instance))
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{
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if (gtk_clipboard_set_with_data (cp_gtk_clipboard, targets, n,
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clipboard_get_func,
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clipboard_clear_func,
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NULL))
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{
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#if GTK_MINOR_VERSION > 4
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gtk_clipboard_set_can_store (cp_gtk_clipboard, NULL, 0);
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#endif
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}
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}
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else
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{
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if (gtk_clipboard_set_with_data (cp_gtk_selection, targets, n,
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clipboard_get_func,
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clipboard_clear_func,
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NULL))
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{
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#if GTK_MINOR_VERSION > 4
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gtk_clipboard_set_can_store (cp_gtk_selection, NULL, 0);
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#endif
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}
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}
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for (i = 0; i < n; i++)
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g_free (targets[i].target);
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g_free (targets);
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}
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gtk_target_list_unref (target_list);
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gdk_threads_leave ();
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}
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