gecko/modules/plugin/samples/4x-scriptable/plugin.cpp

216 lines
5.5 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
//////////////////////////////////////////////////
//
// CPlugin class implementation
//
#ifdef XP_WIN
#include <windows.h>
#include <windowsx.h>
#endif
#ifdef XP_MAC
#include <TextEdit.h>
#endif
#include "plugin.h"
CPlugin::CPlugin(NPP pNPInstance) :
m_pNPInstance(pNPInstance),
m_pNPStream(NULL),
m_bInitialized(FALSE),
m_pScriptablePeer(NULL)
{
#ifdef XP_WIN
m_hWnd = NULL;
#endif
const char *ua = NPN_UserAgent(m_pNPInstance);
strcpy(m_String, ua);
}
CPlugin::~CPlugin()
{
NS_IF_RELEASE(m_pScriptablePeer);
}
#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;
#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);
#endif
m_Window = pNPWindow;
m_bInitialized = TRUE;
return TRUE;
}
void CPlugin::shut()
{
#ifdef XP_WIN
// subclass it back
SubclassWindow(m_hWnd, lpOldProc);
m_hWnd = NULL;
#endif
m_bInitialized = FALSE;
}
NPBool CPlugin::isInitialized()
{
return m_bInitialized;
}
int16 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(m_String, ua);
#ifdef XP_WIN
InvalidateRect(m_hWnd, NULL, TRUE);
UpdateWindow(m_hWnd);
#endif
if (m_Window) {
NPRect r = { m_Window->y, m_Window->x,
m_Window->y + m_Window->height, m_Window->x + m_Window->width };
NPN_InvalidateRect(m_pNPInstance, &r);
}
}
// this will clean the plugin window
void CPlugin::clear()
{
strcpy(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(version, ua);
}
// ==============================
// ! Scriptability related code !
// ==============================
//
// this method will return the scriptable object (and create it if necessary)
nsI4xScriptablePlugin* CPlugin::getScriptablePeer()
{
if (!m_pScriptablePeer) {
m_pScriptablePeer = new nsScriptablePeer(this);
if(!m_pScriptablePeer)
return NULL;
NS_ADDREF(m_pScriptablePeer);
}
// add reference for the caller requesting the object
NS_ADDREF(m_pScriptablePeer);
return m_pScriptablePeer;
}
#ifdef XP_WIN
static LRESULT CALLBACK PluginWinProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch (msg) {
case WM_PAINT:
{
// draw a frame and display the string
PAINTSTRUCT ps;
HDC hdc = BeginPaint(hWnd, &ps);
RECT rc;
GetClientRect(hWnd, &rc);
FrameRect(hdc, &rc, GetStockBrush(BLACK_BRUSH));
CPlugin * p = (CPlugin *)GetWindowLong(hWnd, GWL_USERDATA);
if(p)
DrawText(hdc, p->m_String, strlen(p->m_String), &rc, DT_SINGLELINE | DT_CENTER | DT_VCENTER);
EndPaint(hWnd, &ps);
}
break;
default:
break;
}
return DefWindowProc(hWnd, msg, wParam, lParam);
}
#endif