Hi All,
I have been trying to understand the WebKit2 source and hopefully
start contributing small missing functionality to start with. Towards
this goal, I have implemented a small browser that can open multiple
tabs based on WebKit2 C API. I am currently using the GTK+ port from
the master branch of WebKit's git repo for this.
As I understand, as of now plugins are not working in WebKit2/GTK+. To
understand the same and start contributing (if possible), I plan to
use a basic windowless plugin for understanding/debugging. However, my
problem is that when I open a test HTML page that has this plugin, it
opens fine in Firefox, and somewhat okay in Chrome (the position is
shifted), but when I open the same using GtkLauncher or midori, both
fail to show the plugin area - although I could see that the plugin's
NPP functions are receiving the calls and the plugin's event handler
is also fired with event type GraphicsExpose - but nothing is drawn in
plugin area. (The plugin should draw two empty squares with green
boundary on a black background.). It will be pointless to use this for
testing/understanding WebKit2 unless this works fine on WebKit.
I have tried running this both on a recent commit on the master branch
as well as on WebKit/GTK+ version 1.4.0. The plugin code is as
attached below.
Could someone please have a look and let me know if there is something
in the plugin that is wrong, or is there an issue in WebKit/GTK+ port
with respect to window-less plugins ? I tried looking at bugzilla but
could not find any relevant bugs...
Thanks in advance for any helpful suggestion and pointers..
regards,
Aneesh Bhasin
/*
* Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <npfunctions.h>
extern NPNetscapeFuncs* browser;
typedef struct
{
NPObject header;
} DefaultObject;
/*
* Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
* Copyright (C) 2009 Holger Hans Peter Freyther
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "defaultObject.h"
#include <npapi.h>
#include <npruntime.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xos.h>
#include <X11/Xatom.h>
#include <X11/keysym.h>
extern "C"
{
char* NP_GetMIMEDescription(void);
NPError NP_Initialize (NPNetscapeFuncs*, NPPluginFuncs*);
NPError NP_Shutdown(void);
NPError NP_GetValue(void*, NPPVariable, void*);
}
NPNetscapeFuncs* browser;
static NPObject* default_Allocate(NPP npp, NPClass* theClass)
{
printf("\n\noDEFPLUGIN: in %s\n\n",__func__);
DefaultObject* newInstance = (DefaultObject*) malloc(sizeof(DefaultObject));
if(!newInstance)
{
return NULL;
}
memset(newInstance, 0, sizeof(DefaultObject));
return (NPObject*) newInstance;
}
static void default_Deallocate(NPObject* obj)
{
printf("\n\nDEFPLUGIN: in %s\n\n",__func__);
DefaultObject* plugin = reinterpret_cast<DefaultObject*>(obj);
free(plugin);
}
NPClass* getDefaultClass(void)
{
printf("\n\nDEFPLUGIN: in %s\n\n",__func__);
static NPClass defaultClass =
{
NP_CLASS_STRUCT_VERSION,
default_Allocate,
default_Deallocate,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL
};
return &defaultClass;
}
static NPError createInstance(NPMIMEType mimetype, NPP instance, uint16_t mode,
int16_t argc, char* argn[], char* argv[], NPSavedData* savedData)
{
printf("\n\nDEFPLUGIN: in %s\n\n",__func__);
if(browser->version >= 14)
{
DefaultObject* obj = (DefaultObject*) browser->createobject(instance, getDefaultClass());
if(!obj)
{
return NPERR_OUT_OF_MEMORY_ERROR;
}
instance->pdata = obj;
browser->setvalue(instance, NPPVpluginWindowBool, (void*) FALSE);
}
return NPERR_NO_ERROR;
}
static NPError destroyInstance(NPP instance, NPSavedData** save)
{
printf("\n\nDEFPLUGIN: in %s\n\n",__func__);
DefaultObject* obj = static_cast<DefaultObject*>(instance->pdata);
if(!obj)
{
return NPERR_NO_DATA;
}
browser->releaseobject(&obj->header);
return NPERR_NO_ERROR;
}
static NPError setWindow(NPP instance, NPWindow* window)
{
printf("\n\nDEFPLUGIN: in %s\n\n",__func__);
DefaultObject* obj = static_cast<DefaultObject*>(instance->pdata);
if(!obj || !window)
{
return NPERR_NO_DATA;
}
return NPERR_NO_ERROR;
}
static int16_t handleEvent(NPP instance, void* event)
{
printf("\n\nDEFPLUGIN: in %s\n\n",__func__);
DefaultObject* obj = static_cast<DefaultObject*>(instance->pdata);
if(!obj)
{
return 0;
}
XEvent* xevent = (XEvent*) event;
if(xevent->type == GraphicsExpose)
{
printf("\n\nDEFPLUGIN: in %s, got GraphicsExpose!!\n\n",__func__);
XGraphicsExposeEvent* expose = &xevent->xgraphicsexpose;
GC green_gc;
XColor green_col;
Colormap colormap;
char green[] = "#00FF00";
colormap = DefaultColormap(expose->display, 0);
green_gc = XCreateGC(expose->display, expose->drawable, 0, 0);
XParseColor(expose->display, colormap, green, &green_col);
XAllocColor(expose->display, colormap, &green_col);
XSetForeground(expose->display, green_gc, green_col.pixel);
XDrawRectangle(expose->display, expose->drawable, green_gc, 1, 1, 100, 100);
XDrawRectangle(expose->display, expose->drawable, green_gc, 50, 50, 100, 100);
XFlush(expose->display);
}
else
{
printf("\n\nDEFPLUGIN: in %s, NOT GraphicsExpose\n\n",__func__);
}
return 1;
}
static NPError getValue(NPP instance, NPPVariable variable, void* value)
{
printf("\n\nDEFPLUGIN: in %s\n\n",__func__);
NPError err = NPERR_NO_ERROR;
switch(variable)
{
case NPPVpluginNameString:
case NPPVpluginDescriptionString:
*((const char**)value) = "default plug-in";
break;
case NPPVpluginNeedsXEmbed:
*((NPBool*)value) = TRUE;
break;
case NPPVpluginScriptableIID:
case NPPVpluginScriptableInstance:
err = NPERR_GENERIC_ERROR;
break;
case NPPVpluginScriptableNPObject:
{
NPObject* obj = static_cast<NPObject*>(instance->pdata);
browser->retainobject(obj);
*((void**)value) = obj;
err = NPERR_NO_ERROR;
}
break;
default:
err = NPERR_GENERIC_ERROR;
break;
}
return err;
}
static NPError setValue(NPP instance, NPNVariable variable, void* value)
{
printf("\n\nDEFPLUGIN: in %s\n\n",__func__);
return NPERR_NO_ERROR;
}
char* NP_GetMIMEDescription(void)
{
printf("\n\nDEFPLUGIN: in %s\n\n",__func__);
return (char*) "application/defplugin::";
}
NPError NP_Initialize(NPNetscapeFuncs* aMozillaVTable, NPPluginFuncs* aPluginVTable)
{
printf("\n\nDEFPLUGIN: in %s\n\n",__func__);
if(aMozillaVTable == NULL || aPluginVTable == NULL)
{
return NPERR_INVALID_FUNCTABLE_ERROR;
}
if((aMozillaVTable->version >> 8) > NP_VERSION_MAJOR)
{
return NPERR_INCOMPATIBLE_VERSION_ERROR;
}
if(aMozillaVTable->size < sizeof(NPNetscapeFuncs))
{
return NPERR_INVALID_FUNCTABLE_ERROR;
}
if(aPluginVTable->size < sizeof(NPPluginFuncs))
{
return NPERR_INVALID_FUNCTABLE_ERROR;
}
browser = aMozillaVTable;
aPluginVTable->size = sizeof(NPPluginFuncs);
aPluginVTable->version = (NP_VERSION_MAJOR << 8) + NP_VERSION_MINOR;
aPluginVTable->newp = createInstance;
aPluginVTable->destroy = destroyInstance;
aPluginVTable->setwindow = setWindow;
aPluginVTable->newstream = NULL;
aPluginVTable->destroystream = NULL;
aPluginVTable->asfile = NULL;
aPluginVTable->writeready = NULL;
aPluginVTable->write = NULL;
aPluginVTable->print = NULL;
aPluginVTable->event = handleEvent;
aPluginVTable->urlnotify = NULL;
aPluginVTable->javaClass = NULL;
aPluginVTable->getvalue = getValue;
aPluginVTable->setvalue = setValue;
return NPERR_NO_ERROR;
}
NPError NP_Shutdown(void)
{
printf("\n\nDEFPLUGIN: in %s\n\n",__func__);
return NPERR_NO_ERROR;
}
NPError NP_GetValue(void* future, NPPVariable variable, void* value)
{
printf("\n\nDEFPLUGIN: in %s\n\n",__func__);
return getValue(NULL, variable, value);
}
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