gcc/libjava/jni/gtk-peer/gnu_java_awt_peer_gtk_GtkComponentPeer.c

/* gtkcomponentpeer.c -- Native implementation of GtkComponentPeer
   Copyright (C) 1998, 1999, 2002 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., 59 Temple Place, Suite 330, Boston, MA
02111-1307 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. */


#include "gtkpeer.h"
#include "gnu_java_awt_peer_gtk_GtkComponentPeer.h"
#include <gtk/gtkprivate.h>

JNIEXPORT void JNICALL Java_gnu_java_awt_peer_gtk_GtkGenericPeer_dispose
  (JNIEnv *env, jobject obj)
{
  void *ptr;

  ptr = NSA_DEL_PTR (env, obj);

  /* For now the native state for any object must be a widget.
     However, a subclass could override dispose() if required.  */
  gdk_threads_enter ();
  gtk_widget_destroy (GTK_WIDGET (ptr));
  gdk_threads_leave ();
}

JNIEXPORT void JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_gtkWidgetSetCursor 
  (JNIEnv *env, jobject obj, jint type) 
{
  void *ptr;
  GtkWidget *widget;
  GdkCursorType gdk_cursor_type;
  GdkCursor *gdk_cursor;

  ptr = NSA_GET_PTR (env, obj);

  switch (type)
    {
    case AWT_CROSSHAIR_CURSOR:
      gdk_cursor_type = GDK_CROSSHAIR;
      break;
    case AWT_TEXT_CURSOR:
      gdk_cursor_type = GDK_XTERM;
      break;
    case AWT_WAIT_CURSOR:
      gdk_cursor_type = GDK_WATCH;
      break;
    case AWT_SW_RESIZE_CURSOR:
      gdk_cursor_type = GDK_BOTTOM_LEFT_CORNER;
      break;
    case AWT_SE_RESIZE_CURSOR:
      gdk_cursor_type = GDK_BOTTOM_RIGHT_CORNER;
      break;
    case AWT_NW_RESIZE_CURSOR:
      gdk_cursor_type = GDK_TOP_LEFT_CORNER;
      break;
    case AWT_NE_RESIZE_CURSOR:
      gdk_cursor_type = GDK_TOP_RIGHT_CORNER;
      break;
    case AWT_N_RESIZE_CURSOR:
      gdk_cursor_type = GDK_TOP_SIDE;
      break;
    case AWT_S_RESIZE_CURSOR:
      gdk_cursor_type = GDK_BOTTOM_SIDE;
      break;
    case AWT_W_RESIZE_CURSOR:
      gdk_cursor_type = GDK_LEFT_SIDE;
      break;
    case AWT_E_RESIZE_CURSOR:
      gdk_cursor_type = GDK_RIGHT_SIDE;
      break;
    case AWT_HAND_CURSOR:
      gdk_cursor_type = GDK_HAND2;
      break;
    case AWT_MOVE_CURSOR:
      gdk_cursor_type = GDK_FLEUR;
      break;
    default:
      gdk_cursor_type = GDK_LEFT_PTR;
    }
      
  gdk_threads_enter ();

  widget = GTK_WIDGET(ptr);

  gdk_cursor = gdk_cursor_new (gdk_cursor_type);
  gdk_window_set_cursor (widget->window, gdk_cursor);
  gdk_cursor_destroy (gdk_cursor);

  gdk_threads_leave ();
}

JNIEXPORT void JNICALL Java_gnu_java_awt_peer_gtk_GtkComponentPeer_requestFocus
  (JNIEnv *env, jobject obj)
{
  void *ptr;

  ptr = NSA_GET_PTR (env, obj);
  
  gdk_threads_enter ();
  gtk_widget_grab_focus (GTK_WIDGET (ptr));
  gdk_threads_leave ();
}


/*
 * Show a widget (NO LONGER USED)
 */
JNIEXPORT void JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_setVisible
  (JNIEnv *env, jobject obj, jboolean visible)
{
  GtkWidget *widget;
  void *ptr;

  ptr = NSA_GET_PTR (env, obj);

  gdk_threads_enter ();
  widget = GTK_WIDGET (ptr);

  if (visible)
    gtk_widget_show (widget);
  else
    gtk_widget_hide (widget);

  gdk_flush ();
  gdk_threads_leave ();
}

/*
 * Find the origin of a widget's window.
 */
JNIEXPORT void JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_gtkWidgetGetLocationOnScreen
  (JNIEnv * env, jobject obj, jintArray jpoint)
{
  void *ptr;
  jint *point;

  ptr = NSA_GET_PTR (env, obj);
  point = (*env)->GetIntArrayElements (env, jpoint, 0);

  gdk_threads_enter ();

  gdk_window_get_origin (GTK_WIDGET (ptr)->window, point, point+1);

  if (!GTK_IS_CONTAINER (ptr))
    {
      *point += GTK_WIDGET(ptr)->allocation.x;
      *(point+1) += GTK_WIDGET(ptr)->allocation.y;
    }

  gdk_threads_leave ();

  (*env)->ReleaseIntArrayElements(env, jpoint, point, 0);
}

/*
 * Find the preferred size of a widget.
 */
JNIEXPORT void JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_gtkWidgetGetDimensions
    (JNIEnv *env, jobject obj, jintArray jdims)
{
    void *ptr;
    jint *dims;
    GtkRequisition req;

    ptr = NSA_GET_PTR (env, obj);
    dims = (*env)->GetIntArrayElements (env, jdims, 0);  

    gdk_threads_enter ();

    gtk_signal_emit_by_name (GTK_OBJECT (ptr), "size_request", &req);

    dims[0] = req.width;
    dims[1] = req.height;

    gdk_threads_leave ();

    (*env)->ReleaseIntArrayElements(env, jdims, dims, 0);
}

JNIEXPORT void JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_gtkWidgetSetUsize (JNIEnv *env, 
    jobject obj, jint w, jint h)
{
  void *ptr;

  ptr = NSA_GET_PTR (env, obj);
  
  gdk_threads_enter ();
  gtk_widget_set_usize (GTK_WIDGET (ptr), w, h);
  gdk_threads_leave ();
}

JNIEXPORT void JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_gtkFixedNew (JNIEnv *env, 
    jobject obj, jint width, jint height, jboolean visible)
{
  GtkWidget *layout;

  gdk_threads_enter ();
  layout = gtk_layout_new (NULL, NULL);
  gtk_widget_realize (layout);
  connect_awt_hook (env, obj, 1, GTK_LAYOUT (layout)->bin_window);
  set_visible (layout, visible);
  gdk_threads_leave ();

  NSA_SET_PTR (env, obj, layout);
}

/*
 * Place a widget on the layout widget. 
 */
JNIEXPORT void JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_gtkFixedPut 
    (JNIEnv *env, jobject obj, jobject container, jint x, jint y)
{
  GList *child;
  GtkWidget *fix;
  void *containerptr=NULL;
  void *objptr=NULL;

  /* We hawe a container which, if it is a window, will have
     this component added to its fixed.  If it is a fixed, we add the
     component to it. */
  
  containerptr=NSA_GET_PTR (env, container);
  objptr=NSA_GET_PTR (env, obj);
  
  gdk_threads_enter ();
  if (GTK_IS_WINDOW(GTK_OBJECT(containerptr)))
    {
      child=gtk_container_children (GTK_CONTAINER(containerptr));
      
      while (child && !GTK_IS_FIXED(child->data))
	{
	  child=g_list_next(child);
	}
      
      fix=GTK_WIDGET(child->data);
      g_list_free(child);
    }
  else
    if (GTK_IS_SCROLLED_WINDOW(GTK_OBJECT(containerptr)))
    {
      child=gtk_container_children (GTK_CONTAINER (GTK_BIN(containerptr)->child));
      
      while (child && !GTK_IS_FIXED(child->data))
	{
	  child=g_list_next(child);
	}
      
      fix=GTK_WIDGET(child->data);

      g_list_free(child);
    }
  else
    {
      fix=GTK_WIDGET(containerptr);
    }
  
  gtk_fixed_put(GTK_FIXED(fix),GTK_WIDGET(objptr),x,y);
  gtk_widget_realize (GTK_WIDGET (objptr));
  gtk_widget_show (GTK_WIDGET (objptr));
  
  gdk_threads_leave ();
}

JNIEXPORT void JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_gtkFixedMove (JNIEnv *env, 
    jobject obj, jint x, jint y)
{
  GtkWidget *widget;
  void *ptr=NULL;

  /* For some reason, ScrolledWindow tries to scroll its contents
     by moving them using this function.  Since we want to use GTK's
     nice fast scrolling, we try to second guess it here.  This
     might cause problems later.  */
  
  if (x >= 0 && y >= 0) 
    {
      ptr = NSA_GET_PTR (env, obj);
      
      gdk_threads_enter ();
      widget=GTK_WIDGET (ptr);
      if (!GTK_IS_WINDOW (widget))
	  gtk_fixed_move (GTK_FIXED (widget->parent), widget, x, y);
      gdk_threads_leave ();
    }
}

JNIEXPORT void JNICALL Java_gnu_java_awt_peer_gtk_GtkComponentPeer_setNativeBounds
  (JNIEnv *env, jobject obj, jint x, jint y, jint width, jint height)
{
  GtkWidget *widget;
  void *ptr;

  ptr = NSA_GET_PTR (env, obj);

  gdk_threads_enter ();

  widget = GTK_WIDGET (ptr);
  if (GTK_IS_VIEWPORT (widget->parent))
    {
      gtk_widget_set_usize (widget, width, height);
    }
  else
    {
      gtk_widget_set_usize (widget, width, height);
      gtk_layout_move (GTK_LAYOUT (widget->parent), widget, x, y);
    }

  gdk_threads_leave ();
}

JNIEXPORT jintArray JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_gtkWidgetGetBackground
  (JNIEnv *env, jobject obj)
{
  void *ptr;
  jintArray array;
  int *rgb;
  GdkColor bg;

  ptr = NSA_GET_PTR (env, obj);

  gdk_threads_enter ();
  bg = GTK_WIDGET (ptr)->style->bg[GTK_STATE_NORMAL];
  gdk_threads_leave ();

  array = (*env)->NewIntArray (env, 3);
  rgb = (*env)->GetIntArrayElements (env, array, NULL);
  /* convert color data from 16 bit values down to 8 bit values */
  rgb[0] = bg.red   >> 8;
  rgb[1] = bg.green >> 8;
  rgb[2] = bg.blue  >> 8;
  (*env)->ReleaseIntArrayElements (env, array, rgb, 0);

  return array;
}

JNIEXPORT jintArray JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_gtkWidgetGetForeground
  (JNIEnv *env, jobject obj)
{
  void *ptr;
  jintArray array;
  jint *rgb;
  GdkColor fg;

  ptr = NSA_GET_PTR (env, obj);

  gdk_threads_enter ();
  fg = GTK_WIDGET (ptr)->style->fg[GTK_STATE_NORMAL];
  gdk_threads_leave ();

  array = (*env)->NewIntArray (env, 3);
  rgb = (*env)->GetIntArrayElements (env, array, NULL);
  /* convert color data from 16 bit values down to 8 bit values */
  rgb[0] = fg.red   >> 8;
  rgb[1] = fg.green >> 8;
  rgb[2] = fg.blue  >> 8;
  (*env)->ReleaseIntArrayElements (env, array, rgb, 0);

  return array;
}

void
set_visible (GtkWidget *widget, jboolean visible)
{
  if (visible)
    gtk_widget_show (widget);
  else
    gtk_widget_hide (widget);
}

GtkLayout *
find_gtk_layout (GtkWidget *parent)
{
  if (GTK_IS_WINDOW (parent))
    {
      GList *children = gtk_container_children 
	                  (GTK_CONTAINER (GTK_BIN (parent)->child));

      if (GTK_IS_MENU_BAR (children->data))
	return GTK_LAYOUT (children->next->data);
      else /* GTK_IS_LAYOUT (children->data) */
	return GTK_LAYOUT (children->data);
    }

  return NULL;
}

#define WIDGET_CLASS(w)  GTK_WIDGET_CLASS (GTK_OBJECT (w)->klass)

void
set_parent (GtkWidget *widget, GtkContainer *parent)
{
  if (GTK_IS_WINDOW (parent))
    {
      GList *children = gtk_container_children 
	                  (GTK_CONTAINER (GTK_BIN (parent)->child));

      if (GTK_IS_MENU_BAR (children->data))
	gtk_layout_put (GTK_LAYOUT (children->next->data), widget, 0, 0);
      else /* GTK_IS_LAYOUT (children->data) */
	gtk_layout_put (GTK_LAYOUT (children->data), widget, 0, 0);
    }
  else
    if (GTK_IS_SCROLLED_WINDOW (parent))
      {
/*  	if (WIDGET_CLASS (widget)->set_scroll_adjustments_signal) */
/*  	  gtk_container_add (GTK_CONTAINER (parent), widget); */
/*  	else */
/*  	  { */
	    gtk_scrolled_window_add_with_viewport 
	      (GTK_SCROLLED_WINDOW (parent), widget);
	    gtk_viewport_set_shadow_type (GTK_VIEWPORT (widget->parent), 
					  GTK_SHADOW_NONE);
/*  	  } */

      }
/*        gtk_layout_put  */
/*  	(GTK_LAYOUT (GTK_BIN (parent)->child), widget, 0, 0); */

/*      if (GTK_IS_SCROLLED_WINDOW (parent)) */
/*        gtk_layout_put  */
/*  	(GTK_LAYOUT (GTK_BIN (GTK_BIN (parent)->child)->child), widget, 0, 0); */
    else
      gtk_layout_put (GTK_LAYOUT (parent), widget, 0, 0);
}

JNIEXPORT jboolean JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_isEnabled 
  (JNIEnv *env, jobject obj)
{
  void *ptr;
  jboolean ret_val;
  
  ptr = NSA_GET_PTR (env, obj);

  gdk_threads_enter ();
  ret_val = GTK_WIDGET_IS_SENSITIVE (GTK_WIDGET (ptr));
  gdk_threads_leave ();

  return ret_val;
}

JNIEXPORT jboolean JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_modalHasGrab
  (JNIEnv *env, jclass clazz)
{
  GtkWidget *widget;
  jboolean retval;

  gdk_threads_enter ();
  widget = gtk_grab_get_current ();
  retval = (widget && GTK_IS_WINDOW (widget) && GTK_WINDOW (widget)->modal);
  gdk_threads_leave ();

  return retval;
}

JNIEXPORT void JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_set__Ljava_lang_String_2Ljava_lang_String_2
  (JNIEnv *env, jobject obj, jstring jname, jstring jvalue)
{
  const char *name;
  const char *value;
  void *ptr;

  ptr = NSA_GET_PTR (env, obj);
  name = (*env)->GetStringUTFChars (env, jname, NULL);
  value = (*env)->GetStringUTFChars (env, jvalue, NULL);

  gdk_threads_enter();
  g_object_set(ptr, name, value, NULL);
  gdk_threads_leave();

  (*env)->ReleaseStringUTFChars (env, jname, name);
  (*env)->ReleaseStringUTFChars (env, jvalue, value);
}

JNIEXPORT void JNICALL Java_gnu_java_awt_peer_gtk_GtkComponentPeer_set__Ljava_lang_String_2Z
  (JNIEnv *env, jobject obj, jstring jname, jboolean value)
{
  const char *name;
  void *ptr;

  ptr = NSA_GET_PTR (env, obj);

  name = (*env)->GetStringUTFChars (env, jname, NULL);

  gdk_threads_enter();
  g_object_set(ptr, name, value, NULL);
  gdk_threads_leave();

  (*env)->ReleaseStringUTFChars (env, jname, name);
}

JNIEXPORT void JNICALL Java_gnu_java_awt_peer_gtk_GtkComponentPeer_set__Ljava_lang_String_2I
  (JNIEnv *env, jobject obj, jstring jname, jint value)
{
  const char *name;
  void *ptr;

  ptr = NSA_GET_PTR (env, obj);
  name = (*env)->GetStringUTFChars (env, jname, NULL);

  gdk_threads_enter();                          
  g_object_set(ptr, name, value, NULL);
  gdk_threads_leave();

  (*env)->ReleaseStringUTFChars (env, jname, name);
}

JNIEXPORT void JNICALL Java_gnu_java_awt_peer_gtk_GtkComponentPeer_set__Ljava_lang_String_2F
  (JNIEnv *env, jobject obj, jstring jname, jfloat value)
{
  const char *name;
  void *ptr;

  ptr = NSA_GET_PTR (env, obj);
  name = (*env)->GetStringUTFChars (env, jname, NULL);

  gdk_threads_enter();                          
  g_object_set(ptr, name, value, NULL);
  gdk_threads_leave();

  (*env)->ReleaseStringUTFChars (env, jname, name);
}

JNIEXPORT void JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_set__Ljava_lang_String_2Ljava_lang_Object_2
  (JNIEnv *env, jobject obj1, jstring jname, jobject obj2)
{
  const char *name;
  void *ptr1, *ptr2;

  ptr1 = NSA_GET_PTR (env, obj1);
  ptr2 = NSA_GET_PTR (env, obj2);
  
  name = (*env)->GetStringUTFChars (env, jname, NULL);

  /* special case to catch where we need to set the parent */
  if (!strcmp (name, "parent"))
    {
      gdk_threads_enter ();
      set_parent (GTK_WIDGET (ptr1), GTK_CONTAINER (ptr2));
      gdk_threads_leave ();

      (*env)->ReleaseStringUTFChars (env, jname, name);
      return;
    }

  gdk_threads_enter();                          
  g_object_set(ptr1, name, ptr2, NULL);
  gdk_threads_leave();

  (*env)->ReleaseStringUTFChars (env, jname, name);
}

JNIEXPORT void JNICALL Java_gnu_java_awt_peer_gtk_GtkComponentPeer_connectHooks
  (JNIEnv *env, jobject obj)
{
  void *ptr;

  ptr = NSA_GET_PTR (env, obj);

  gdk_threads_enter ();
  gtk_widget_realize (GTK_WIDGET (ptr));

  if(GTK_IS_BUTTON(ptr))
    connect_awt_hook (env, obj, 1, GTK_BUTTON(ptr)->event_window);
  else
    connect_awt_hook (env, obj, 1, GTK_WIDGET (ptr)->window);
  gdk_threads_leave ();
}