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pjs/modules/plugin/samples/unixprinting/npunix.c

508 строки
15 KiB
C
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/* -*- 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):
* Stephen Mak <smak@sun.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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 ***** */
/*
* npunix.c
*
* Netscape Client Plugin API
* - Wrapper function to interface with the Netscape Navigator
*
* dp Suresh <dp@netscape.com>
*
*----------------------------------------------------------------------
* PLUGIN DEVELOPERS:
* YOU WILL NOT NEED TO EDIT THIS FILE.
*----------------------------------------------------------------------
*/
#define XP_UNIX 1
#include <stdio.h>
#include "npapi.h"
#include "npupp.h"
/*
* Define PLUGIN_TRACE to have the wrapper functions print
* messages to stderr whenever they are called.
*/
#ifdef PLUGIN_TRACE
#include <stdio.h>
#define PLUGINDEBUGSTR(msg) fprintf(stderr, "%s\n", msg)
#else
#define PLUGINDEBUGSTR(msg)
#endif
/***********************************************************************
*
* Globals
*
***********************************************************************/
static NPNetscapeFuncs gNetscapeFuncs; /* Netscape Function table */
/***********************************************************************
*
* Wrapper functions : plugin calling Netscape Navigator
*
* These functions let the plugin developer just call the APIs
* as documented and defined in npapi.h, without needing to know
* about the function table and call macros in npupp.h.
*
***********************************************************************/
void
NPN_Version(int* plugin_major, int* plugin_minor,
int* netscape_major, int* netscape_minor)
{
*plugin_major = NP_VERSION_MAJOR;
*plugin_minor = NP_VERSION_MINOR;
/* Major version is in high byte */
*netscape_major = gNetscapeFuncs.version >> 8;
/* Minor version is in low byte */
*netscape_minor = gNetscapeFuncs.version & 0xFF;
}
NPError
NPN_GetValue(NPP instance, NPNVariable variable, void *r_value)
{
return CallNPN_GetValueProc(gNetscapeFuncs.getvalue,
instance, variable, r_value);
}
NPError
NPN_SetValue(NPP instance, NPPVariable variable, void *value)
{
return CallNPN_SetValueProc(gNetscapeFuncs.setvalue,
instance, variable, value);
}
NPError
NPN_GetURL(NPP instance, const char* url, const char* window)
{
return CallNPN_GetURLProc(gNetscapeFuncs.geturl, instance, url, window);
}
NPError
NPN_GetURLNotify(NPP instance, const char* url, const char* window, void* notifyData)
{
return CallNPN_GetURLNotifyProc(gNetscapeFuncs.geturlnotify, instance, url, window, notifyData);
}
NPError
NPN_PostURL(NPP instance, const char* url, const char* window,
uint32 len, const char* buf, NPBool file)
{
return CallNPN_PostURLProc(gNetscapeFuncs.posturl, instance,
url, window, len, buf, file);
}
NPError
NPN_PostURLNotify(NPP instance, const char* url, const char* window, uint32 len,
const char* buf, NPBool file, void* notifyData)
{
return CallNPN_PostURLNotifyProc(gNetscapeFuncs.posturlnotify,
instance, url, window, len, buf, file, notifyData);
}
NPError
NPN_RequestRead(NPStream* stream, NPByteRange* rangeList)
{
return CallNPN_RequestReadProc(gNetscapeFuncs.requestread,
stream, rangeList);
}
NPError
NPN_NewStream(NPP instance, NPMIMEType type, const char *window,
NPStream** stream_ptr)
{
return CallNPN_NewStreamProc(gNetscapeFuncs.newstream, instance,
type, window, stream_ptr);
}
int32
NPN_Write(NPP instance, NPStream* stream, int32 len, void* buffer)
{
return CallNPN_WriteProc(gNetscapeFuncs.write, instance,
stream, len, buffer);
}
NPError
NPN_DestroyStream(NPP instance, NPStream* stream, NPError reason)
{
return CallNPN_DestroyStreamProc(gNetscapeFuncs.destroystream,
instance, stream, reason);
}
void
NPN_Status(NPP instance, const char* message)
{
CallNPN_StatusProc(gNetscapeFuncs.status, instance, message);
}
const char*
NPN_UserAgent(NPP instance)
{
return CallNPN_UserAgentProc(gNetscapeFuncs.uagent, instance);
}
void*
NPN_MemAlloc(uint32 size)
{
return CallNPN_MemAllocProc(gNetscapeFuncs.memalloc, size);
}
void NPN_MemFree(void* ptr)
{
CallNPN_MemFreeProc(gNetscapeFuncs.memfree, ptr);
}
uint32 NPN_MemFlush(uint32 size)
{
return CallNPN_MemFlushProc(gNetscapeFuncs.memflush, size);
}
void NPN_ReloadPlugins(NPBool reloadPages)
{
CallNPN_ReloadPluginsProc(gNetscapeFuncs.reloadplugins, reloadPages);
}
#ifdef OJI
JRIEnv* NPN_GetJavaEnv()
{
return CallNPN_GetJavaEnvProc(gNetscapeFuncs.getJavaEnv);
}
jref NPN_GetJavaPeer(NPP instance)
{
return CallNPN_GetJavaPeerProc(gNetscapeFuncs.getJavaPeer,
instance);
}
#endif
void
NPN_InvalidateRect(NPP instance, NPRect *invalidRect)
{
CallNPN_InvalidateRectProc(gNetscapeFuncs.invalidaterect, instance,
invalidRect);
}
void
NPN_InvalidateRegion(NPP instance, NPRegion invalidRegion)
{
CallNPN_InvalidateRegionProc(gNetscapeFuncs.invalidateregion, instance,
invalidRegion);
}
void
NPN_ForceRedraw(NPP instance)
{
CallNPN_ForceRedrawProc(gNetscapeFuncs.forceredraw, instance);
}
/***********************************************************************
*
* Wrapper functions : Netscape Navigator -> plugin
*
* These functions let the plugin developer just create the APIs
* as documented and defined in npapi.h, without needing to
* install those functions in the function table or worry about
* setting up globals for 68K plugins.
*
***********************************************************************/
NPError
Private_New(NPMIMEType pluginType, NPP instance, uint16 mode,
int16 argc, char* argn[], char* argv[], NPSavedData* saved)
{
NPError ret;
PLUGINDEBUGSTR("New");
ret = NPP_New(pluginType, instance, mode, argc, argn, argv, saved);
return ret;
}
NPError
Private_Destroy(NPP instance, NPSavedData** save)
{
PLUGINDEBUGSTR("Destroy");
return NPP_Destroy(instance, save);
}
NPError
Private_SetWindow(NPP instance, NPWindow* window)
{
NPError err;
PLUGINDEBUGSTR("SetWindow");
err = NPP_SetWindow(instance, window);
return err;
}
NPError
Private_NewStream(NPP instance, NPMIMEType type, NPStream* stream,
NPBool seekable, uint16* stype)
{
NPError err;
PLUGINDEBUGSTR("NewStream");
err = NPP_NewStream(instance, type, stream, seekable, stype);
return err;
}
int32
Private_WriteReady(NPP instance, NPStream* stream)
{
unsigned int result;
PLUGINDEBUGSTR("WriteReady");
result = NPP_WriteReady(instance, stream);
return result;
}
int32
Private_Write(NPP instance, NPStream* stream, int32 offset, int32 len,
void* buffer)
{
unsigned int result;
PLUGINDEBUGSTR("Write");
result = NPP_Write(instance, stream, offset, len, buffer);
return result;
}
void
Private_StreamAsFile(NPP instance, NPStream* stream, const char* fname)
{
PLUGINDEBUGSTR("StreamAsFile");
NPP_StreamAsFile(instance, stream, fname);
}
NPError
Private_DestroyStream(NPP instance, NPStream* stream, NPError reason)
{
NPError err;
PLUGINDEBUGSTR("DestroyStream");
err = NPP_DestroyStream(instance, stream, reason);
return err;
}
void
Private_URLNotify(NPP instance, const char* url,
NPReason reason, void* notifyData)
{
PLUGINDEBUGSTR("URLNotify");
NPP_URLNotify(instance, url, reason, notifyData);
}
void
Private_Print(NPP instance, NPPrint* platformPrint)
{
PLUGINDEBUGSTR("Print");
NPP_Print(instance, platformPrint);
}
#ifdef OJI
JRIGlobalRef
Private_GetJavaClass(void)
{
jref clazz = NPP_GetJavaClass();
if (clazz) {
JRIEnv* env = NPN_GetJavaEnv();
return JRI_NewGlobalRef(env, clazz);
}
return NULL;
}
#endif
/***********************************************************************
*
* These functions are located automagically by netscape.
*
***********************************************************************/
/*
* NP_GetMIMEDescription
* - Netscape needs to know about this symbol
* - Netscape uses the return value to identify when an object instance
* of this plugin should be created.
*/
char *
NP_GetMIMEDescription(void)
{
return NPP_GetMIMEDescription();
}
/*
* NP_GetValue [optional]
* - Netscape needs to know about this symbol.
* - Interfaces with plugin to get values for predefined variables
* that the navigator needs.
*/
NPError
NP_GetValue(void* future, NPPVariable variable, void *value)
{
return NPP_GetValue(future, variable, value);
}
/*
* NP_Initialize
* - Netscape needs to know about this symbol.
* - It calls this function after looking up its symbol before it
* is about to create the first ever object of this kind.
*
* PARAMETERS
* nsTable - The netscape function table. If developers just use these
* wrappers, they dont need to worry about all these function
* tables.
* RETURN
* pluginFuncs
* - This functions needs to fill the plugin function table
* pluginFuncs and return it. Netscape Navigator plugin
* library will use this function table to call the plugin.
*
*/
NPError
NP_Initialize(NPNetscapeFuncs* nsTable, NPPluginFuncs* pluginFuncs)
{
NPError err = NPERR_NO_ERROR;
PLUGINDEBUGSTR("NP_Initialize");
/* validate input parameters */
if ((nsTable == NULL) || (pluginFuncs == NULL))
err = NPERR_INVALID_FUNCTABLE_ERROR;
/*
* Check the major version passed in Netscape's function table.
* We won't load if the major version is newer than what we expect.
* Also check that the function tables passed in are big enough for
* all the functions we need (they could be bigger, if Netscape added
* new APIs, but that's OK with us -- we'll just ignore them).
*
*/
if (err == NPERR_NO_ERROR) {
if ((nsTable->version >> 8) > NP_VERSION_MAJOR)
err = NPERR_INCOMPATIBLE_VERSION_ERROR;
if (nsTable->size < sizeof(NPNetscapeFuncs))
err = NPERR_INVALID_FUNCTABLE_ERROR;
if (pluginFuncs->size < sizeof(NPPluginFuncs))
err = NPERR_INVALID_FUNCTABLE_ERROR;
}
if (err == NPERR_NO_ERROR) {
/*
* Copy all the fields of Netscape function table into our
* copy so we can call back into Netscape later. Note that
* we need to copy the fields one by one, rather than assigning
* the whole structure, because the Netscape function table
* could actually be bigger than what we expect.
*/
gNetscapeFuncs.version = nsTable->version;
gNetscapeFuncs.size = nsTable->size;
gNetscapeFuncs.posturl = nsTable->posturl;
gNetscapeFuncs.geturl = nsTable->geturl;
gNetscapeFuncs.geturlnotify = nsTable->geturlnotify;
gNetscapeFuncs.requestread = nsTable->requestread;
gNetscapeFuncs.newstream = nsTable->newstream;
gNetscapeFuncs.write = nsTable->write;
gNetscapeFuncs.destroystream = nsTable->destroystream;
gNetscapeFuncs.status = nsTable->status;
gNetscapeFuncs.uagent = nsTable->uagent;
gNetscapeFuncs.memalloc = nsTable->memalloc;
gNetscapeFuncs.memfree = nsTable->memfree;
gNetscapeFuncs.memflush = nsTable->memflush;
gNetscapeFuncs.reloadplugins = nsTable->reloadplugins;
#ifdef OJI
gNetscapeFuncs.getJavaEnv = nsTable->getJavaEnv;
gNetscapeFuncs.getJavaPeer = nsTable->getJavaPeer;
#endif
gNetscapeFuncs.getvalue = nsTable->getvalue;
/*
* Set up the plugin function table that Netscape will use to
* call us. Netscape needs to know about our version and size
* and have a UniversalProcPointer for every function we
* implement.
*/
pluginFuncs->version = (NP_VERSION_MAJOR << 8) + NP_VERSION_MINOR;
pluginFuncs->size = sizeof(NPPluginFuncs);
pluginFuncs->newp = NewNPP_NewProc(Private_New);
pluginFuncs->destroy = NewNPP_DestroyProc(Private_Destroy);
pluginFuncs->setwindow = NewNPP_SetWindowProc(Private_SetWindow);
pluginFuncs->newstream = NewNPP_NewStreamProc(Private_NewStream);
pluginFuncs->destroystream = NewNPP_DestroyStreamProc(Private_DestroyStream);
pluginFuncs->asfile = NewNPP_StreamAsFileProc(Private_StreamAsFile);
pluginFuncs->writeready = NewNPP_WriteReadyProc(Private_WriteReady);
pluginFuncs->write = NewNPP_WriteProc(Private_Write);
pluginFuncs->print = NewNPP_PrintProc(Private_Print);
pluginFuncs->urlnotify = NewNPP_URLNotifyProc(Private_URLNotify);
pluginFuncs->event = NULL;
#ifdef OJI
pluginFuncs->javaClass = Private_GetJavaClass();
#endif
err = NPP_Initialize();
}
return err;
}
/*
* NP_Shutdown [optional]
* - Netscape needs to know about this symbol.
* - It calls this function after looking up its symbol after
* the last object of this kind has been destroyed.
*
*/
NPError
NP_Shutdown(void)
{
PLUGINDEBUGSTR("NP_Shutdown");
NPP_Shutdown();
return NPERR_NO_ERROR;
}
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