gecko-dev/modules/plugin/SanePlugin/nsSanePlugin.h
rusty.lynch%intel.com 79196ab9b1 Adding the SANE plugin as an example Linux XPCOM plugin.
This check-in related to bug #25068.  This isn't part of the build.
2000-06-02 04:11:45 +00:00

239 lines
7.9 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* 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.
* Contributor(s):
*
* Rusty Lynch <rusty.lynch@intel.com>
*/
/*
* Declares the nsSanePluginInterface class for the SANE plugin.
*/
#ifndef __NS_SANE_PLUGIN_H__
#define __NS_SANE_PLUGIN_H__
#include "prthread.h"
#include "nscore.h"
#include "nsplugin.h"
#include "gdksuperwin.h"
#include "gtkmozbox.h"
#include "gtk/gtk.h"
#include "nsIPlugin.h"
#include "nsSanePluginControl.h"
#include "nsIScriptContext.h"
#include "nsIServiceManager.h"
#include "nsISupports.h"
#include "nsISupportsUtils.h"
#include "nsIEventQueueService.h"
#include "nsIEventQueue.h"
///////////////////////////////////
// Needed for encoding jpeg images
extern "C"
{
#include <jpeglib.h>
}
///////////////////////////////////
// Needed for SANE interface
extern "C"
{
#include <sane/sane.h>
#include <sane/sanei.h>
#include <sane/saneopts.h>
}
typedef struct _PlatformInstance
{
Window window;
GtkWidget * widget;
GdkSuperWin * superwin;
Display * display;
uint16 x;
uint16 y;
uint32 width;
uint32 height;
} PlatformInstance;
// Threaded routine for grabbing a frame from device.
// If a callback for onScanComplete was set in the embed/object
// tag, then this routine will call it before exiting.
//void PR_CALLBACK scanimage_thread_routine( void * arg);
void PR_CALLBACK scanimage_thread_routine( void * arg );
class nsSanePluginInstance : public nsIPluginInstance,
public nsISanePluginInstance
{
friend void PR_CALLBACK scanimage_thread_routine( void *);
public:
nsSanePluginInstance(void);
virtual ~nsSanePluginInstance(void);
/////////////////////////////////////////////////////////////////////
// nsIPluginInstance inherited interface
NS_IMETHOD Initialize(nsIPluginInstancePeer* peer);
NS_IMETHOD GetPeer(nsIPluginInstancePeer* *result);
NS_IMETHOD Start(void);
NS_IMETHOD Stop(void);
NS_IMETHOD Destroy( void );
NS_IMETHOD SetWindow( nsPluginWindow* window );
NS_IMETHOD NewStream( nsIPluginStreamListener** listener );
NS_IMETHOD Print( nsPluginPrint* platformPrint );
NS_IMETHOD GetValue( nsPluginInstanceVariable variable, void *value );
// Not used for this platform! Only a placeholder.
NS_IMETHOD HandleEvent( nsPluginEvent* event, PRBool* handled );
// End of nsIPlugIninstance inherited interface.
/////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////
// nsSanePluginInstance specific methods:
NS_DECL_ISUPPORTS ;
// Execute given callback in window's JavaScript
NS_IMETHOD DoScanCompleteCallback();
NS_IMETHOD DoInitCompleteCallback();
void SetMode(nsPluginMode mode) { fMode = mode; }
void SetState(PRInt32 aState) { mState = aState; };
NS_IMETHOD PaintImage(void);
char * GetImageFilename();
GtkWidget * GetFileSelection();
PRBool IsUIThread();
nsresult OpenSaneDeviceIF( void );
//*** Methods exposed through the XPConnect interface ***
NS_DECL_NSISANEPLUGININSTANCE
private:
GtkWidget *mDrawing_area;
GtkWidget *mEvent_box;
PlatformInstance fPlatform;
char mImageFilename[255];
GtkWidget *mFileSelection;
GdkRectangle mZoom_box;
unsigned char *mRGBData;
int mRGBWidth, mRGBHeight;
// line attributes for zoom box
PRInt32 mLineWidth;
GdkLineStyle mLineStyle;
GdkCapStyle mCapStyle;
GdkJoinStyle mJoinStyle;
// zoom box change variables
float mTopLeftXChange;
float mTopLeftYChange;
float mBottomRightXChange;
float mBottomRightYChange;
// jpeg compression attributes
int mCompQuality;
enum J_DCT_METHOD mCompMethod;
// sane specific members
SANE_Handle mSaneHandle;
SANE_String mSaneDevice;
SANE_Bool mSaneOpen;
PRBool mSuccess;
PRInt32 mState;
// needed for JavaScript Callbacks
char *mOnScanCompleteScript;
char *mOnInitCompleteScript;
PRThread *mScanThread;
PRThread *mUIThread;
protected:
nsIPluginInstancePeer* fPeer;
nsPluginWindow* fWindow;
nsPluginMode fMode;
nsIPluginManager* mPluginManager;
private:
int WritePNMHeader (int fd, SANE_Frame format,
int width, int height,
int depth);
void PlatformNew( void );
nsresult PlatformDestroy( void );
PRInt16 PlatformHandleEvent( nsPluginEvent* event );
nsresult PlatformSetWindow( nsPluginWindow* window );
};
class nsSanePluginStreamListener : public nsIPluginStreamListener
{
public:
NS_DECL_ISUPPORTS ;
/*
* Notify the observer that the URL has started to load. This method is
* called only once, at the beginning of a URL load.<BR><BR>
*
* @return The return value is currently ignored. In the future it may be
* used to cancel the URL load..
*/
NS_IMETHOD OnStartBinding( nsIPluginStreamInfo* pluginInfo );
/**
* Notify the client that data is available in the input stream. This
* method is called whenver data is written into the input stream by the
* networking library...<BR><BR>
*
* @param aIStream The input stream containing the data. This stream can
* be either a blocking or non-blocking stream.
* @param length The amount of data that was just pushed into the
* stream.
* @return The return value is currently ignored.
*/
NS_IMETHOD OnDataAvailable( nsIPluginStreamInfo* pluginInfo,
nsIInputStream* input,
PRUint32 length );
NS_IMETHOD OnFileAvailable( nsIPluginStreamInfo* pluginInfo,
const char* fileName );
/**
* Notify the observer that the URL has finished loading. This method is
* called once when the networking library has finished processing the
* URL transaction initiatied via the nsINetService::Open(...) call.
* <BR><BR>
*
* This method is called regardless of whether the URL loaded
* successfully.<BR><BR>
*
* @param status Status code for the URL load.
* @param msg A text string describing the error.
* @return The return value is currently ignored.
*/
NS_IMETHOD OnStopBinding( nsIPluginStreamInfo* pluginInfo,
nsresult status );
NS_IMETHOD OnNotify( const char* url, nsresult status );
NS_IMETHOD GetStreamType( nsPluginStreamType *result );
///////////////////////////////////////////////////////////////////////////
// snPluginStreamListener specific methods:
nsSanePluginStreamListener( nsSanePluginInstance* inst );
virtual ~nsSanePluginStreamListener( void );
nsSanePluginInstance* mPlugInst;
};
#endif // __NS_SANE_PLUGIN_H__