gnu_java_awt_peer_gtk_gtkcomponentpeer.c

来自「Mac OS X 10.4.9 for x86 Source Code gcc」· C语言 代码 · 共 1,079 行 · 第 1/2 页

  (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 ();
}

/*
 * Translate a Java KeyEvent object into a GdkEventKey event, then
 * pass it to the GTK main loop for processing.
 */
JNIEXPORT void JNICALL
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_gtkWidgetDispatchKeyEvent
  (JNIEnv *env, jobject obj, jint id, jlong when, jint mods,
   jint keyCode, jint keyLocation)
{
  void *ptr;
  GdkEvent *event = NULL;
  GdkKeymapKey *keymap_keys = NULL;
  gint n_keys = 0;
  guint lookup_keyval = 0;

  ptr = NSA_GET_PTR (env, obj);

  gdk_threads_enter ();

  if (id == AWT_KEY_PRESSED)
    event = gdk_event_new (GDK_KEY_PRESS);
  else if (id == AWT_KEY_RELEASED)
    event = gdk_event_new (GDK_KEY_RELEASE);
  else
    {
      gdk_threads_leave ();
      /* Don't send AWT KEY_TYPED events to GTK. */
      return;
    }

  if (GTK_IS_BUTTON (ptr))
    event->key.window = GTK_BUTTON (ptr)->event_window;
  else if (GTK_IS_SCROLLED_WINDOW (ptr))
    event->key.window = GTK_WIDGET (GTK_SCROLLED_WINDOW (ptr)->container.child)->window;
  else
    event->key.window = GTK_WIDGET (ptr)->window;

  event->key.send_event = 0;
  event->key.time = (guint32) when;

  if (mods & AWT_SHIFT_DOWN_MASK)
    event->key.state |= GDK_SHIFT_MASK;
  if (mods & AWT_CTRL_DOWN_MASK)
    event->key.state |= GDK_CONTROL_MASK;
  if (mods & AWT_ALT_DOWN_MASK)
    event->key.state |= GDK_MOD1_MASK;

  /* This hack is needed because the AWT has no notion of num lock.
     It infers numlock state from the only Java virtual keys that are
     affected by it. */
  if (keyCode == VK_NUMPAD9
      || keyCode == VK_NUMPAD8
      || keyCode == VK_NUMPAD7
      || keyCode == VK_NUMPAD6
      || keyCode == VK_NUMPAD5
      || keyCode == VK_NUMPAD4
      || keyCode == VK_NUMPAD3
      || keyCode == VK_NUMPAD2
      || keyCode == VK_NUMPAD1
      || keyCode == VK_NUMPAD0
      || keyCode == VK_DECIMAL)
    event->key.state |= GDK_MOD2_MASK;

  /* These values don't need to be filled in since GTK doesn't use
     them. */
  event->key.length = 0;
  event->key.string = NULL;

  lookup_keyval = awt_keycode_to_keysym (keyCode, keyLocation);

  if (!gdk_keymap_get_entries_for_keyval (gdk_keymap_get_default (),
                                          lookup_keyval,
                                          &keymap_keys,
                                          &n_keys))
    {
      /* No matching keymap entry was found. */
      g_printerr ("No matching keymap entries were found\n");
      gdk_threads_leave ();
      return;
    }

  /* Note: if n_keys > 1 then there are multiple hardware keycodes
     that translate to lookup_keyval.  We arbitrarily choose the first
     hardware keycode from the list returned by
     gdk_keymap_get_entries_for_keyval. */

  event->key.hardware_keycode = keymap_keys[0].keycode;
  event->key.group =  keymap_keys[0].group;

  g_free (keymap_keys);

  if (!gdk_keymap_translate_keyboard_state (gdk_keymap_get_default (),
                                            event->key.hardware_keycode,
                                            event->key.state,
                                            event->key.group,
                                            &event->key.keyval,
                                            NULL, NULL, NULL))
    {
      /* No matching keyval was found. */
      g_printerr ("No matching keyval was found\n");
      gdk_threads_leave ();
      return;
    }

  /*  keyevent = (GdkEventKey *) event; */
  /*  g_printerr ("generated event: sent: %d  time: %d  state: %d  keyval: %d  length: %d  string: %s  hardware_keycode: %d  group: %d\n", keyevent->send_event, keyevent->time, keyevent->state, keyevent->keyval, keyevent->length, keyevent->string, keyevent->hardware_keycode, keyevent->group); */

  /* We already received the original key event on the window itself,
     so we don't want to resend it. */
  if (!GTK_IS_WINDOW (ptr))
    {
      if (GTK_IS_SCROLLED_WINDOW (ptr))
        gtk_widget_event (GTK_WIDGET (GTK_SCROLLED_WINDOW (ptr)->container.child), event);
      else
        gtk_widget_event (GTK_WIDGET (ptr), event);
    }

  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 this widget's current size.
 */
JNIEXPORT void JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_gtkWidgetGetDimensions
  (JNIEnv *env, jobject obj, jintArray jdims)
{
  void *ptr;
  jint *dims;
  GtkRequisition requisition;

  ptr = NSA_GET_PTR (env, obj);

  dims = (*env)->GetIntArrayElements (env, jdims, 0);  
  dims[0] = dims[1] = 0;

  gdk_threads_enter ();

  gtk_widget_size_request (GTK_WIDGET (ptr), &requisition);

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

  gdk_threads_leave ();

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

/*
 * Find this widget's preferred size.
 */
JNIEXPORT void JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_gtkWidgetGetPreferredDimensions
  (JNIEnv *env, jobject obj, jintArray jdims)
{
  void *ptr;
  jint *dims;
  GtkRequisition current_req;
  GtkRequisition natural_req;

  ptr = NSA_GET_PTR (env, obj);

  dims = (*env)->GetIntArrayElements (env, jdims, 0);  
  dims[0] = dims[1] = 0;

  gdk_threads_enter ();

  /* Widgets that extend GtkWindow such as GtkFileChooserDialog may have
     a default size.  These values seem more useful then the natural
     requisition values, particularly for GtkFileChooserDialog. */
  if (GTK_IS_WINDOW (ptr))
    {
      gint width, height;
      gtk_window_get_default_size (GTK_WINDOW (ptr), &width, &height);

      dims[0] = width;
      dims[1] = height;
    }
  else
    {
      /* Save the widget's current size request. */
      gtk_widget_size_request (GTK_WIDGET (ptr), &current_req);

      /* Get the widget's "natural" size request. */
      gtk_widget_set_size_request (GTK_WIDGET (ptr), -1, -1);
      gtk_widget_size_request (GTK_WIDGET (ptr), &natural_req);

      /* Reset the widget's size request. */
      gtk_widget_set_size_request (GTK_WIDGET (ptr),
			           current_req.width, current_req.height);

      dims[0] = natural_req.width;
      dims[1] = natural_req.height;
    }

  gdk_threads_leave ();

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

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);

  /* We assume that -1 is a width or height and not a request for the
     widget's natural size. */
  width = width < 0 ? 0 : width;
  height = height < 0 ? 0 : height;

  if (GTK_IS_VIEWPORT (widget->parent))
    gtk_widget_set_size_request (widget, width, height);
  else
    {
      if (!(width == 0 && height == 0))
        {
          gtk_widget_set_size_request (widget, width, height);
          if (widget->parent != NULL)
            gtk_fixed_move (GTK_FIXED (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;
}

JNIEXPORT void JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_gtkWidgetSetBackground
  (JNIEnv *env, jobject obj, jint red, jint green, jint blue)
{
  GdkColor normal_color;
  GdkColor active_color;
  GtkWidget *widget;
  void *ptr;

  ptr = NSA_GET_PTR (env, obj);

  normal_color.red = (red / 255.0) * 65535;
  normal_color.green = (green / 255.0) * 65535;
  normal_color.blue = (blue / 255.0) * 65535;

  /* This calculation only approximates the active colors produced by
     Sun's AWT. */
  active_color.red = 0.85 * (red / 255.0) * 65535;
  active_color.green = 0.85 * (green / 255.0) * 65535;
  active_color.blue = 0.85 * (blue / 255.0) * 65535;

  gdk_threads_enter ();

  widget = find_bg_color_widget (GTK_WIDGET (ptr));

  gtk_widget_modify_bg (widget, GTK_STATE_NORMAL, &normal_color);
  gtk_widget_modify_bg (widget, GTK_STATE_ACTIVE, &active_color);
  gtk_widget_modify_bg (widget, GTK_STATE_PRELIGHT, &normal_color);

  gdk_threads_leave ();
}

JNIEXPORT void JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_gtkWidgetSetForeground
  (JNIEnv *env, jobject obj, jint red, jint green, jint blue)
{
  GdkColor color;
  GtkWidget *widget;
  void *ptr;

  ptr = NSA_GET_PTR (env, obj);

  color.red = (red / 255.0) * 65535;
  color.green = (green / 255.0) * 65535;
  color.blue = (blue / 255.0) * 65535;

  gdk_threads_enter ();

  widget = find_fg_color_widget (GTK_WIDGET (ptr));

  gtk_widget_modify_fg (widget, GTK_STATE_NORMAL, &color);
  gtk_widget_modify_fg (widget, GTK_STATE_ACTIVE, &color);
  gtk_widget_modify_fg (widget, GTK_STATE_PRELIGHT, &color);

  gdk_threads_leave ();
}

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

  ptr = NSA_GET_PTR (env, obj);

  gdk_threads_enter();
  gtk_widget_show (GTK_WIDGET (ptr));
  gdk_threads_leave();
}

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

  ptr = NSA_GET_PTR (env, obj);

  gdk_threads_enter();
  gtk_widget_hide (GTK_WIDGET (ptr));
  gdk_threads_leave();
}

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_isRealized
  (JNIEnv *env, jobject obj)
{
  void *ptr;
  jboolean ret_val;

  ptr = NSA_GET_PTR (env, obj);

  if (ptr == NULL)
    return FALSE;

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

  return ret_val;
}

JNIEXPORT jboolean JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_modalHasGrab
  (JNIEnv *env __attribute__((unused)), jclass clazz __attribute__((unused)))
{
  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_connectSignals
  (JNIEnv *env, jobject obj)
{
  void *ptr;
  jobject *gref;

  ptr = NSA_GET_PTR (env, obj);
  gref = NSA_GET_GLOBAL_REF (env, obj);

  gdk_threads_enter ();

  /* Connect EVENT signal, which happens _before_ any specific signal. */

  g_signal_connect (GTK_OBJECT (ptr), "event",
                    G_CALLBACK (pre_event_handler), *gref);

  g_signal_connect (G_OBJECT (ptr), "focus-in-event",
                    G_CALLBACK (focus_in_cb), *gref);

  g_signal_connect (G_OBJECT (ptr), "focus-out-event",
                    G_CALLBACK (focus_out_cb), *gref);

  g_signal_connect_after (G_OBJECT (ptr), "realize",
                          G_CALLBACK (connect_awt_hook_cb), *gref);

  gdk_threads_leave ();
}

static GtkWidget *
find_fg_color_widget (GtkWidget *widget)
{
  GtkWidget *fg_color_widget;

  if (GTK_IS_EVENT_BOX (widget)
      || (GTK_IS_BUTTON (widget)
          && !GTK_IS_OPTION_MENU (widget)))
    fg_color_widget = gtk_bin_get_child (GTK_BIN(widget));
  else
    fg_color_widget = widget;

  return fg_color_widget;
}

static GtkWidget *
find_bg_color_widget (GtkWidget *widget)
{
  GtkWidget *bg_color_widget;

  bg_color_widget = widget;

  return bg_color_widget;
}

static gboolean
focus_in_cb (GtkWidget *widget __attribute((unused)),
             GdkEventFocus *event __attribute((unused)),
             jobject peer)
{
  gdk_threads_leave ();
  (*gdk_env())->CallVoidMethod (gdk_env(), peer,
                              postFocusEventID,
                              AWT_FOCUS_GAINED,
                              JNI_FALSE);
  gdk_threads_enter ();
  return FALSE;
}

static gboolean
focus_out_cb (GtkWidget *widget __attribute((unused)),
              GdkEventFocus *event __attribute((unused)),
              jobject peer)
{
  gdk_threads_leave ();
  (*gdk_env())->CallVoidMethod (gdk_env(), peer,
                              postFocusEventID,
                              AWT_FOCUS_LOST,
                              JNI_FALSE);
  gdk_threads_enter ();
  return FALSE;
}