plugin.cpp

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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//
// CPlugin class implementation
//
#include <assert.h>
#include "plugin.h"
#include "npfunctions.h"
#include "BasePlugin.h"
#include "dllFreeWRL.h"
//extern "C"
//{
//      #include "libFreeWRL.h"
//      //#include <internal.h>
//      //#include <iglobal.h>
//}

#ifdef XP_WIN
#include <windows.h>
#include <windowsx.h>
#include <string>
#endif

#ifdef XP_MAC
#include <TextEdit.h>
#endif

#ifdef XP_UNIX
#include <string.h>
#endif



CPlugin::CPlugin(NPP pNPInstance) :
  m_pNPInstance(pNPInstance),
  m_pNPStream(NULL),
  m_bInitialized(FALSE),
  m_pScriptableObject(NULL)
{
#ifdef XP_WIN
  m_hWnd = NULL;
#endif
  m_pfreeWRLPlayer = NULL;
  
  m_pfreeWRLPlayer = new CdllFreeWRL();

  assert(m_pfreeWRLPlayer);

  m_sceneUrl = NULL;

  m_EAIflag = false;

  NPN_GetValue(m_pNPInstance, NPNVWindowNPObject, &sWindowObj); 
}

CPlugin::~CPlugin()
{
        if (m_pScriptableObject)
                NPN_ReleaseObject(m_pScriptableObject);

        if (sWindowObj)
                NPN_ReleaseObject(sWindowObj);
        
        sWindowObj = 0;
}

#ifdef XP_WIN
static LRESULT CALLBACK PluginWinProc(HWND, UINT, WPARAM, LPARAM);
static WNDPROC lpOldProc = NULL;
#endif

NPBool CPlugin::init(NPWindow* pNPWindow)
{
  if(pNPWindow == NULL)
    return FALSE;

  m_Window = pNPWindow;

#ifdef XP_WIN
  m_hWnd = (HWND)pNPWindow->window;
  if(m_hWnd == NULL)
    return FALSE;

  // subclass window so we can intercept window messages and
  // do our drawing to it
  lpOldProc = SubclassWindow(m_hWnd, (WNDPROC)PluginWinProc);
   
  // associate window with our CPlugin object so we can access 
  // it in the window procedure
  SetWindowLong(m_hWnd, GWL_USERDATA, (LONG)this);
#else
  m_hWnd = (long int*) pNPWindow->window;
    
#endif
  //m_pfreeWRLPlayer = new CdllFreeWRL(pNPWindow->width,pNPWindow->height,pNPWindow->window,m_EAIflag);
  //m_pfreeWRLPlayer->onInit(pNPWindow->window,pNPWindow->width,pNPWindow->height, m_EAIflag);
  bool frontend_handles_display_thread = false;
  m_pfreeWRLPlayer->onInit(pNPWindow->width,pNPWindow->height, pNPWindow->window, m_EAIflag, frontend_handles_display_thread);

  //m_pfreeWRLPlayer->onLoad(pNPWindow->window,m_sceneUrl);
  m_pfreeWRLPlayer->onLoad(m_sceneUrl);
    

  m_bInitialized = TRUE;
  return TRUE;
}

void CPlugin::shut()
{
        m_pfreeWRLPlayer->onClose(); //(m_Window->window);
        //TODO: since we are closing a bunch of threads, maybe should be better to set a check on them.

#ifdef XP_WIN
  // subclass it back
        SubclassWindow(m_hWnd, lpOldProc);
        m_hWnd = NULL;  
#endif

        if(m_sceneUrl)
                free(m_sceneUrl);


        delete m_pfreeWRLPlayer;
        
        m_bInitialized = FALSE;
}

NPBool CPlugin::isInitialized()
{
  return m_bInitialized;
}

int16_t CPlugin::handleEvent(void* event)
{
#ifdef XP_MAC
  NPEvent* ev = (NPEvent*)event;
  if (m_Window) {
    Rect box = { m_Window->y, m_Window->x,
                 m_Window->y + m_Window->height, m_Window->x + m_Window->width };
    if (ev->what == updateEvt) {
      ::TETextBox(m_String, strlen(m_String), &box, teJustCenter);
    }
  }
#endif
  return 0;
}

// this will force to draw a version string in the plugin window
void CPlugin::showVersion()
{
  const char *ua = NPN_UserAgent(m_pNPInstance);
  strcpy_s(m_String, ua);

#ifdef XP_WIN
  InvalidateRect(m_hWnd, NULL, TRUE);
  UpdateWindow(m_hWnd);
#endif

  /*if (m_Window) {
    NPRect r =
      {
        (uint16_t)m_Window->y, (uint16_t)m_Window->x,
        (uint16_t)(m_Window->y + m_Window->height),
        (uint16_t)(m_Window->x + m_Window->width)
      };

    NPN_InvalidateRect(m_pNPInstance, &r);
  }*/
}

// this will clean the plugin window
void CPlugin::clear()
{
  strcpy_s(m_String, "");

#ifdef XP_WIN
  InvalidateRect(m_hWnd, NULL, TRUE);
  UpdateWindow(m_hWnd);
#endif
}

void CPlugin::getVersion(char* *aVersion)
{
  const char *ua = NPN_UserAgent(m_pNPInstance);
  char*& version = *aVersion;
  version = (char*)NPN_MemAlloc(1 + strlen(ua));
  if (version)
    strcpy_s(version, sizeof(version), ua);
}

NPObject *
CPlugin::GetScriptableObject()
{
  if (!m_pScriptableObject) {
    m_pScriptableObject =
      NPN_CreateObject(m_pNPInstance,
                       GET_NPOBJECT_CLASS(BasePlugin));
  }

  if (m_pScriptableObject) {
    NPN_RetainObject(m_pScriptableObject);
  }

  return m_pScriptableObject;
}
#define SCURSE 1
#define ACURSE 0
#define NCURSE 2
static HCURSOR hSensor, hArrow;
static HCURSOR cursor;
void loadCursors()
{
        hSensor = LoadCursor(NULL,IDC_HAND); /* prepare sensor_cursor */
        hArrow = LoadCursor( NULL, IDC_ARROW );
}
void updateCursorStyle0(int cstyle)
{
        if(!hSensor) loadCursors();
        switch(cstyle){
                case SCURSE:
                        SetCursor(hSensor); break;
                case ACURSE:
                        SetCursor(hArrow); break;
                case NCURSE:
                        SetCursor(NULL); break;
                default:
                        SetCursor(hArrow);
        }
}
LRESULT CPlugin::handleWindowEvents(HWND hWnd, UINT eventmsg, WPARAM wParam, LPARAM lParam)
{
        int cursorStyle;
        switch(eventmsg)
        {
                //resize is bombing in FF and Chrome, but not IE, whether or not I have any of the below uncommented.
        //case WM_SIZE:
        //      {
        //              if(wParam == SIZE_RESTORED)
        //                      m_pfreeWRLPlayer->onResize(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam));
        //              return 0;
        //      }
        //case WM_PAINT:
        //      {
        //              RECT rc;
        //              GetClientRect(hWnd, &rc);
        //              m_pfreeWRLPlayer->onResize(rc.right, rc.bottom);
        //              return 0;
        //      }
        case WM_LBUTTONDOWN:
                {
                        cursorStyle = m_pfreeWRLPlayer->onMouse(4, 1,GET_X_LPARAM(lParam),GET_Y_LPARAM(lParam));
                        updateCursorStyle0(cursorStyle);
                        return 0;
                }
        case WM_LBUTTONUP:
                {
                        cursorStyle = m_pfreeWRLPlayer->onMouse(5, 1,GET_X_LPARAM(lParam),GET_Y_LPARAM(lParam));
                        updateCursorStyle0(cursorStyle);
                        return 0;
                }
        case WM_MBUTTONDOWN:
                {
                        cursorStyle = m_pfreeWRLPlayer->onMouse(4, 2,GET_X_LPARAM(lParam),GET_Y_LPARAM(lParam));
                        updateCursorStyle0(cursorStyle);
                        return 0;
                }
        case WM_MBUTTONUP:
                {
                        cursorStyle = m_pfreeWRLPlayer->onMouse(5, 2,GET_X_LPARAM(lParam),GET_Y_LPARAM(lParam));
                        updateCursorStyle0(cursorStyle);
                        return 0;
                }
        case WM_RBUTTONDOWN:
                {
                        cursorStyle = m_pfreeWRLPlayer->onMouse(4, 3,GET_X_LPARAM(lParam),GET_Y_LPARAM(lParam));
                        updateCursorStyle0(cursorStyle);
                        return 0;
                }
        case WM_RBUTTONUP:
                {
                        cursorStyle = m_pfreeWRLPlayer->onMouse(5, 3,GET_X_LPARAM(lParam),GET_Y_LPARAM(lParam));
                        updateCursorStyle0(cursorStyle);
                        updateCursorStyle0(cursorStyle);
                        return 0;
                }
        case WM_MOUSEMOVE:
                {
                        cursorStyle = m_pfreeWRLPlayer->onMouse(6, 0,GET_X_LPARAM(lParam),GET_Y_LPARAM(lParam));
                        updateCursorStyle0(cursorStyle);
                        return 0;
                }
        case WM_KEYDOWN:
                {
                        m_pfreeWRLPlayer->onKey(CdllFreeWRL::KEYDOWN,wParam);
                        return 0;
                }
        case WM_KEYUP:
                {
                        m_pfreeWRLPlayer->onKey(CdllFreeWRL::KEYUP,wParam);
                        return 0;
                }
        case WM_CHAR:
                {
                        m_pfreeWRLPlayer->onKey(CdllFreeWRL::KEYPRESS,wParam);
                        return 0;
                }
        case WM_DESTROY:
                {
                        
                        break;
                }
                
        default:
                break;
        }

        return 0;
}

void CPlugin::setSceneUrl(char* sceneUrl)
{
        //char* buf = (char*) NPN_MemAlloc(strlen(sceneUrl)+1);
        size_t buffersize = strlen(sceneUrl)+1;

        char* buf = (char*) calloc(buffersize,sizeof(char));

        strcpy_s(buf,buffersize,sceneUrl);

        m_sceneUrl = buf; 
}

void CPlugin::setEAIFlag()
{
        m_EAIflag = true;
}


#ifdef XP_WIN
static LRESULT CALLBACK PluginWinProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
        CPlugin *plugin = (CPlugin *)(LONG_PTR) GetWindowLong(hWnd, GWL_USERDATA);

        if (!plugin){
                  switch (msg) {
                        case WM_PAINT:
                          {                    
                                 std::string errormsg("Instance Error: Plugin has not been initialized");

                                PAINTSTRUCT ps;
                                RECT rc;
                                HDC hdc = BeginPaint(hWnd, &ps);

                                GetClientRect(hWnd, &rc);
                                FrameRect(hdc, &rc, GetStockBrush(BLACK_BRUSH));
                                DrawText(hdc, (LPCTSTR) errormsg.c_str(), errormsg.length(), &rc, DT_SINGLELINE | DT_CENTER | DT_VCENTER);
                                EndPaint(hWnd, &ps);
                          }
                          break;
                        default:
                          break;
                  }
        }
        else
        {
                plugin->handleWindowEvents(hWnd,msg,wParam,lParam);
        }
  return DefWindowProc(hWnd, msg, wParam, lParam);
}
#endif