gnu_java_awt_peer_gtk_gtkcomponentpeer.c

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/* gtkcomponentpeer.c -- Native implementation of GtkComponentPeer
   Copyright (C) 1998, 1999, 2002, 2004 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. */


#include "gtkpeer.h"
#include "gnu_java_awt_peer_gtk_GtkComponentPeer.h"

#include <gtk/gtkprivate.h>

#define AWT_DEFAULT_CURSOR 0
#define AWT_CROSSHAIR_CURSOR 1
#define AWT_TEXT_CURSOR 2
#define AWT_WAIT_CURSOR 3
#define AWT_SW_RESIZE_CURSOR 4
#define AWT_SE_RESIZE_CURSOR 5
#define AWT_NW_RESIZE_CURSOR 6
#define AWT_NE_RESIZE_CURSOR 7
#define AWT_N_RESIZE_CURSOR 8
#define AWT_S_RESIZE_CURSOR 9
#define AWT_W_RESIZE_CURSOR 10
#define AWT_E_RESIZE_CURSOR 11
#define AWT_HAND_CURSOR 12
#define AWT_MOVE_CURSOR 13

/* FIXME: use gtk-double-click-time, gtk-double-click-distance */
#define MULTI_CLICK_TIME   250
/* as opposed to a MULTI_PASS_TIME :) */

#define AWT_MOUSE_CLICKED  500
#define AWT_MOUSE_PRESSED  501
#define AWT_MOUSE_RELEASED 502
#define AWT_MOUSE_MOVED    503
#define AWT_MOUSE_ENTERED  504
#define AWT_MOUSE_EXITED   505
#define AWT_MOUSE_DRAGGED  506

#define AWT_FOCUS_GAINED 1004
#define AWT_FOCUS_LOST 1005

static GtkWidget *find_fg_color_widget (GtkWidget *widget);
static GtkWidget *find_bg_color_widget (GtkWidget *widget);

static jmethodID postMouseEventID;
static jmethodID setCursorID;
static jmethodID postExposeEventID;
static jmethodID postFocusEventID;

void
cp_gtk_component_init_jni (void)
 {
  jclass gtkcomponentpeer;

  gtkcomponentpeer = (*cp_gtk_gdk_env())->FindClass (cp_gtk_gdk_env(),
                                     "gnu/java/awt/peer/gtk/GtkComponentPeer");

  postMouseEventID = (*cp_gtk_gdk_env())->GetMethodID (cp_gtk_gdk_env(), gtkcomponentpeer,
                                               "postMouseEvent", "(IJIIIIZ)V");

  setCursorID = (*cp_gtk_gdk_env())->GetMethodID (cp_gtk_gdk_env(), gtkcomponentpeer,
                                           "setCursor", "()V");

  postExposeEventID = (*cp_gtk_gdk_env())->GetMethodID (cp_gtk_gdk_env(), gtkcomponentpeer,
                                                 "postExposeEvent", "(IIII)V");

  postFocusEventID = (*cp_gtk_gdk_env())->GetMethodID (cp_gtk_gdk_env(), gtkcomponentpeer,
                                                "postFocusEvent", "(IZ)V");
}

static gboolean component_button_press_cb (GtkWidget *widget,
                                           GdkEventButton *event,
                                           jobject peer);
static gboolean component_button_release_cb (GtkWidget *widget,
                                             GdkEventButton *event,
                                             jobject peer);
static gboolean component_motion_notify_cb (GtkWidget *widget,
                                            GdkEventMotion *event,
                                            jobject peer);
static gboolean component_enter_notify_cb (GtkWidget *widget,
                                           GdkEventCrossing *event,
                                           jobject peer);
static gboolean component_leave_notify_cb (GtkWidget *widget,
                                           GdkEventCrossing *event,
                                           jobject peer);
static gboolean component_expose_cb (GtkWidget *widget,
                                     GdkEventExpose *event,
                                     jobject peer);
static gboolean component_focus_in_cb (GtkWidget *widget,
                                       GdkEventFocus *event,
                                       jobject peer);
static gboolean component_focus_out_cb (GtkWidget *widget,
                                        GdkEventFocus *event,
                                        jobject peer);

static jint
button_to_awt_mods (int button)
{
  switch (button)
    {
    case 1:
      return AWT_BUTTON1_DOWN_MASK | AWT_BUTTON1_MASK;
    case 2:
      return AWT_BUTTON2_DOWN_MASK | AWT_BUTTON2_MASK;
    case 3:
      return AWT_BUTTON3_DOWN_MASK | AWT_BUTTON3_MASK;
    }

  return 0;
}

jint
cp_gtk_state_to_awt_mods (guint state)
{
  jint result = 0;

  if (state & GDK_SHIFT_MASK)
    result |= (AWT_SHIFT_DOWN_MASK | AWT_SHIFT_MASK);
  if (state & GDK_CONTROL_MASK)
    result |= (AWT_CTRL_DOWN_MASK | AWT_CTRL_MASK);
  if (state & GDK_MOD1_MASK)
    result |= (AWT_ALT_DOWN_MASK | AWT_ALT_MASK);

  return result;
}

static jint
state_to_awt_mods_with_button_states (guint state)
{
  jint result = 0;

  if (state & GDK_SHIFT_MASK)
    result |= AWT_SHIFT_DOWN_MASK | AWT_SHIFT_MASK;
  if (state & GDK_CONTROL_MASK)
    result |= AWT_CTRL_DOWN_MASK | AWT_CTRL_MASK;
  if (state & GDK_MOD1_MASK)
    result |= AWT_ALT_DOWN_MASK | AWT_ALT_MASK;
  if (state & GDK_BUTTON1_MASK)
    result |= AWT_BUTTON1_DOWN_MASK | AWT_BUTTON1_MASK;
  if (state & GDK_BUTTON2_MASK)
    result |= AWT_BUTTON2_DOWN_MASK;
  if (state & GDK_BUTTON3_MASK)
    result |= AWT_BUTTON3_DOWN_MASK;

  return result;
}

JNIEXPORT void JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_gtkWidgetSetCursor 
  (JNIEnv *env, jobject obj, jint type) 
{
  gdk_threads_enter ();

  Java_gnu_java_awt_peer_gtk_GtkComponentPeer_gtkWidgetSetCursorUnlocked
    (env, obj, type);

  gdk_threads_leave ();
}

JNIEXPORT void JNICALL 
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_gtkWidgetSetCursorUnlocked
  (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;
    }
      
  widget = GTK_WIDGET(ptr);

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

JNIEXPORT void JNICALL
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_gtkWidgetSetParent
  (JNIEnv *env, jobject obj, jobject parent)
{
  void *ptr;
  void *parent_ptr;
  GtkWidget *widget;
  GtkWidget *parent_widget;

  gdk_threads_enter ();

  ptr = NSA_GET_PTR (env, obj);
  parent_ptr = NSA_GET_PTR (env, parent);

  widget = GTK_WIDGET (ptr);
  parent_widget = GTK_WIDGET (parent_ptr);

  if (widget->parent == NULL)
    {
      if (GTK_IS_WINDOW (parent_widget))
	{
	  GList *children = gtk_container_get_children
	    (GTK_CONTAINER (parent_widget));

          if (GTK_IS_MENU_BAR (children->data))
            gtk_fixed_put (GTK_FIXED (children->next->data), widget, 0, 0);
          else
            gtk_fixed_put (GTK_FIXED (children->data), widget, 0, 0);
        }
      else
        if (GTK_IS_SCROLLED_WINDOW (parent_widget))
          {
            gtk_scrolled_window_add_with_viewport 
              (GTK_SCROLLED_WINDOW (parent_widget), widget);
            gtk_viewport_set_shadow_type (GTK_VIEWPORT (widget->parent), 
                                          GTK_SHADOW_NONE);

          }
        else
          {
            if (widget->parent == NULL)
              gtk_fixed_put (GTK_FIXED (parent_widget), widget, 0, 0);
          }
    }

  gdk_threads_leave ();
}

JNIEXPORT void JNICALL
Java_gnu_java_awt_peer_gtk_GtkComponentPeer_gtkWidgetSetSensitive
  (JNIEnv *env, jobject obj, jboolean sensitive)
{
  void *ptr;

  gdk_threads_enter ();

  ptr = NSA_GET_PTR (env, obj);

  gtk_widget_set_sensitive (GTK_WIDGET (ptr), sensitive);

  gdk_threads_leave ();
}

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

  gdk_threads_enter ();

  ptr = NSA_GET_PTR (env, obj);
  
  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;

  gdk_threads_enter ();

  ptr = NSA_GET_PTR (env, obj);

  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.