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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/gnu/java/awt/peer/gtk/GtkGenericPeer.java | |
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Diffstat (limited to 'libjava/classpath/gnu/java/awt/peer/gtk/GtkGenericPeer.java')
-rw-r--r-- | libjava/classpath/gnu/java/awt/peer/gtk/GtkGenericPeer.java | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/java/awt/peer/gtk/GtkGenericPeer.java b/libjava/classpath/gnu/java/awt/peer/gtk/GtkGenericPeer.java new file mode 100644 index 000000000..1b2c07b5d --- /dev/null +++ b/libjava/classpath/gnu/java/awt/peer/gtk/GtkGenericPeer.java @@ -0,0 +1,145 @@ +/* GtkGenericPeer.java - Has a hashcode. Yuck. + Copyright (C) 1998, 1999, 2002, 2006 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.java.awt.peer.gtk; + +import java.awt.EventQueue; +import java.awt.Font; +import java.awt.Toolkit; +import java.awt.event.ActionEvent; + +import gnu.classpath.Pointer; + +public class GtkGenericPeer +{ + // Used by Native State Association (NSA) functions to map + // gtk_widget to peer object. + final int native_state = getUniqueInteger (); + + // Next native state value we will assign. + private static int next_native_state = 0; + + // The widget or other java-side object we wrap. + protected final Object awtWidget; + + /** + * The pointer to the native GTK widget. + * + * This field is manipulated by native code. Don't change or remove + * without adjusting the native code. + */ + private Pointer widget; + + /** + * The pointer to the global reference to this object. The native + * code creates a JNI global reference of the peer object to be able + * to pass it to the event callbacks. It gets stored here, so that + * we can later delete it in the dispose() method. + * + * This field is manipulated by native code. Don't change or remove + * without adjusting the native code. + */ + private Pointer globalRef; + + /** + * We initialize the field IDs that are used by native code here because + * these remain valid until a class gets unloaded. + */ + static + { + GtkToolkit.initializeGlobalIDs(); + initIDs(); + } + + /** + * Initializes the field IDs that are used by the native code. + */ + private static native void initIDs(); + + /** + * Dispose of our native state. Calls gtk_widget_destroy on the + * native widget and removes the awtWidget from the native state + * tables. Should be overridden by subclasses if this is not (all) + * that needs to be done. + */ + public native void dispose (); + + static EventQueue q () + { + return Toolkit.getDefaultToolkit ().getSystemEventQueue (); + } + + protected GtkGenericPeer (Object awtWidget) + { + this.awtWidget = awtWidget; + } + + protected void postActionEvent (String command, int mods) + { + q().postEvent (new ActionEvent (awtWidget, ActionEvent.ACTION_PERFORMED, + command, mods)); + } + + // Return a unique integer for use in the native state mapping + // code. We can't use a hash code since that is not guaranteed to + // be unique. + static synchronized int getUniqueInteger () + { + // Let's assume this will never wrap. + return next_native_state++; + } + + /** + * Helper method to set Font for Gtk Widget. + */ + protected void gtkWidgetModifyFont(Font f) + { + gtkWidgetModifyFont(f.getName(), f.getStyle(), f.getSize()); + } + + /** + * Sets font for this Gtk Widget. Should be overridden by peers which + * are composed of different widgets or are contained in bins. + */ + protected native void gtkWidgetModifyFont(String name, int style, int size); + + static void printCurrentThread () + { + System.out.println ("gtkgenericpeer, thread: " + Thread.currentThread ()); + } +} |