evt.cc

linux下建立JAVA虚拟机的源码KAFFE

/**
 * evt.c - 
 *
 * Copyright (c) 1998
 *      Transvirtual Technologies, Inc.  All rights reserved.
 *
 * Copyright (c) 2002, 2003, 2004, 2005
 *	Kaffe.org contributors, see ChangeLog for details.  All rights reserved.
 *
 * See the file "license.terms" for information on usage and redistribution 
 * of this file. 
 */
#ifdef QPE
#  include <qpe/qpeapplication.h>
#else
#  include <qapplication.h>
#endif
#include <qevent.h>
#include <qqueue.h>
#include <qwidget.h>

#include "evt.h"
#include "toolkit.h"

#include "keysyms.h"

jclass     AWTEvent;
jclass     ComponentEvent;
jclass     MouseEvent;
jclass     FocusEvent;
jclass     WindowEvent;
jclass     KeyEvent;
jclass     PaintEvent;
jclass     WMEvent;

jmethodID  getComponentEvent;
jmethodID  getMouseEvent;
jmethodID  getFocusEvent;
jmethodID  getWindowEvent;
jmethodID  getKeyEvent;
jmethodID  getPaintEvent;
jmethodID  getWMEvent;

extern void pollJavaClipboard(JNIEnv *env);
extern jobject clearJavaClipboard(JNIEnv *env);

#define    COMPONENT_RESIZED    101

#define    WINDOW_CLOSING       201
#define    WINDOW_CLOSED        202
#define    WINDOW_ICONIFIED     203
#define    WINDOW_DEICONIFIED   204

#define    KEY_PRESSED          401
#define    KEY_RELEASED         402

#define    MOUSE_PRESSED        501
#define    MOUSE_RELEASED       502
#define    MOUSE_MOVED          503
#define    MOUSE_ENTERED        504
#define    MOUSE_EXITED         505

#define    PAINT                800
#define    UPDATE               801

#define    FOCUS_GAINED        1004
#define    FOCUS_LOST          1005

#define    WM_KILLED           1905

class EventPacket {
public:
  EventPacket(QEvent* evt, int idx) { event = evt; srcIdx = idx; }
  QEvent* getEvent() { return event; }
  int getIndex() { return srcIdx; }
protected:
  QEvent* event;
  int srcIdx;
};


#ifdef QPE
extern QPEApplication *qapp;
#else
extern QApplication *qapp;
#endif

QQueue<EventPacket> g_event_queue;

EventDispatcher::EventDispatcher(QWidget *parent, const char *name) {
  if(parent)
    parent->installEventFilter(this);
}

bool EventDispatcher::eventFilter(QObject* o, QEvent* e) {
  DBG(AWT_EVT, qqDebug("event type=%d widget=%p\n", e->type(), o));
  QEvent* newEvent = NULL;
  EventPacket* packet = NULL;
  bool processed = false;

  if (X->srcIdx == 0 || getSourceIdx(X, o) == 0xffffffff)
    return QWidget::eventFilter(o, e);

  switch(e->type()) {
    case QEvent::Clipboard: {
      newEvent = new QEvent(e->type());
      processed = true;
      break;
    }

    case QEvent::Destroy:
    case QEvent::Reparent: {
      newEvent = new QEvent(e->type());
      processed = true;
      break;
    }

    case QEvent::Show: {
      DBG(AWT_EVT, qqDebug("Event Show: srcIdx=%d\n", X->srcIdx));

#if (QT_VERSION < 300)
      newEvent = (QEvent*) new QShowEvent(true);
#else
      QShowEvent* tmpShowEvent = (QShowEvent*)e;
      newEvent = (QEvent*) new QShowEvent();
#endif

      processed = true;
      break;
    }
    
    case QEvent::Hide: {
      DBG(AWT_EVT, qqDebug("Event Hid: srcIdx=%d\n", X->srcIdx));

#if (QT_VERSION < 300)
      newEvent = (QEvent*) new QHideEvent(true);
#else
      QHideEvent* tmpHideEvent = (QHideEvent*)e;
      newEvent = (QEvent*) new QHideEvent();
#endif

      processed = true;
      break;
    }
    
    case QEvent::FocusIn:
    case QEvent::FocusOut: {
      DBG(AWT_EVT, qqDebug("Event Focus: srcIdx=%d\n", X->srcIdx));
      QFocusEvent* tmpFocusEvent = (QFocusEvent*)e;
      newEvent = (QEvent*) new QFocusEvent(tmpFocusEvent->type());
      ((QFocusEvent*)newEvent)->setReason(tmpFocusEvent->reason());
      processed = true;
      break;
    }

    case QEvent::KeyPress:
    case QEvent::KeyRelease: {
      DBG(AWT_EVT, qqDebug("Event Key: srcIdx=%d\n", X->srcIdx));
      QKeyEvent* tmpKeyEvent = (QKeyEvent*)e;
      newEvent = (QEvent*) new QKeyEvent(tmpKeyEvent->type(),tmpKeyEvent->key(),
	tmpKeyEvent->ascii(), tmpKeyEvent->state(), tmpKeyEvent->text(),
	tmpKeyEvent->isAutoRepeat(), tmpKeyEvent->count());
      processed = true;
      break;
    }

    case QEvent::MouseButtonPress:
    case QEvent::MouseButtonRelease:
    case QEvent::MouseMove: {
      DBG(AWT_EVT, qqDebug("Event MouseButton: srcIdx=%d\n", X->srcIdx));
      QMouseEvent* tmpMouseEvent = (QMouseEvent*)e;
      newEvent = (QEvent*) new QMouseEvent(tmpMouseEvent->type(),
        tmpMouseEvent->pos(), tmpMouseEvent->button(),
        tmpMouseEvent->state());
      processed = true;
      break;
    }
    case QEvent::Paint: {
      DBG(AWT_EVT, qqDebug("Event Paint: srcIdx=%d\n", X->srcIdx));
      QPaintEvent* tmpPaintEvent = (QPaintEvent*)e;
      newEvent = (QEvent*) new QPaintEvent(tmpPaintEvent->rect(),
        tmpPaintEvent->erased());
      processed = true;
      break;
    }
    case QEvent::Move: {
      DBG(AWT_EVT, qqDebug("Event Move: srcIdx=%d\n", X->srcIdx));
      QPoint data(((QWidget*)o)->width(), ((QWidget*)o)->height());
      QMoveEvent* tmpMoveEvent = (QMoveEvent*)e;
      // Hide width/height in oldPos of newEvent
      newEvent = (QEvent*) new QMoveEvent(tmpMoveEvent->pos(),
        data);      
      processed = true;
      break;
    }
    case QEvent::Resize: {
      DBG(AWT_EVT, qqDebug("Event Resize: srcIdx=%d\n", X->srcIdx));
      QSize data(((QWidget*)o)->x(), ((QWidget*)o)->y());
      QResizeEvent* tmpResizeEvent = (QResizeEvent*)e;
      // Hide x/y in oldSize of newEvent
      newEvent = (QEvent*) new QResizeEvent(tmpResizeEvent->size(),
        data);
      processed = true;
      break;
    }
  }

  if(processed == true) {
    packet = new EventPacket(newEvent, getSourceIdx(X, o)/*X->srcIdx*/);
    g_event_queue.enqueue(packet);
  }

  return QWidget::eventFilter(o, e);
}

EventDispatcher* eventDispatcher;

void forwardFocus ( int cmd, void* wnd );  /* from wnd.c */


/**
 * Qt-X-Java key modifier mapping
 *                                     altGr   : PC
 *     shift       -    ctrl     alt    meta   : Java
 *     Shift    Lock    Ctrl    Mod1    Mod3   : X      symbol
 *  ----------------------------------------------------------
 *         1       1       2       8       4   : Java   value
 *         1       2       4       8      32   : X
 * ShiftButton    NA ControlButton  AltButton  : QT
 */

static inline int keyMod ( int keyState )
{
  int mod = 0;
  if ( keyState & Qt::ShiftButton )   mod |= 1;
  if ( keyState & Qt::ControlButton ) mod |= 2;
  if ( keyState & Qt::AltButton )     mod |= 8;
  return mod;
}

static inline int mapButton( int button )
{
  if ( button & Qt::LeftButton) return 1;
  if ( button & Qt::RightButton) return 3;
  if ( button & Qt::MidButton) return 2;
  return 1;
}   

#if defined(KAFFE_VMDEBUG)
static char *eventStr ( int evtId )
{
  switch (evtId) {
  case COMPONENT_RESIZED: return "ComponentResized";

  case WINDOW_CLOSING: return "WindowClosing";
  case WINDOW_CLOSED: return "WindowClosed";
  case WINDOW_ICONIFIED: return "WindowIconified";
  case WINDOW_DEICONIFIED: return "WindowDeiconified";

  case KEY_PRESSED: return "KeyPressed";
  case KEY_RELEASED: return "KeyReleased";

  case MOUSE_PRESSED: return "MousePressed";
  case MOUSE_RELEASED: return "MouseReleased";
  case MOUSE_MOVED: return "MouseMoved";
  case MOUSE_ENTERED: return "MouseEntered";
  case MOUSE_EXITED: return "MouseExited";

  case PAINT: return "Paint";
  case UPDATE: return "Update";
	
  case FOCUS_GAINED: return "FocusGained";
  case FOCUS_LOST: return "FocusLost";

  case WM_KILLED: return "WMKilled";

  default: return "<unknown>";
  }
};
#endif

jobject Java_java_awt_Toolkit_evtInit(JNIEnv* env, jclass clazz)
{
  jclass Component;

  DBG(AWT_EVT, qqDebug("evtInit\n"));

  if ( ComponentEvent != NULL ){
    DBG(AWT_EVT, qqDebug("evtInit called twice\n"));
    return NULL;
  }

  if(qapp == NULL) {
    DBG(AWT_EVT, qqDebug("evtInit: qapp not initialized!\n"));
  }

  eventDispatcher = new EventDispatcher();
  qapp->installEventFilter(eventDispatcher);

  ComponentEvent = env->FindClass("java/awt/ComponentEvt");
  MouseEvent     = env->FindClass("java/awt/MouseEvt");
  FocusEvent     = env->FindClass("java/awt/FocusEvt");
  WindowEvent    = env->FindClass("java/awt/WindowEvt");
  KeyEvent       = env->FindClass("java/awt/KeyEvt");
  PaintEvent     = env->FindClass("java/awt/PaintEvt");
  WMEvent        = env->FindClass("java/awt/WMEvent");

  getComponentEvent = env->GetStaticMethodID( ComponentEvent, "getEvent", 
												 "(IIIIII)Ljava/awt/ComponentEvt;");
  getMouseEvent     = env->GetStaticMethodID( MouseEvent, "getEvent",
												 "(IIIII)Ljava/awt/MouseEvt;");
  getFocusEvent     = env->GetStaticMethodID( FocusEvent, "getEvent",
												 "(IIZ)Ljava/awt/FocusEvt;");
  getWindowEvent    = env->GetStaticMethodID( WindowEvent, "getEvent",
												 "(II)Ljava/awt/WindowEvt;");
  getKeyEvent       = env->GetStaticMethodID( KeyEvent, "getEvent",