RetroZilla/modules/plugin/tools/sdk/samples/scriptable/mac/plugin.cpp
2015-10-20 23:03:22 -04:00

378 lines
9.0 KiB
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** 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 ***** */
#include "plugin.h"
#include "nsISupportsUtils.h" // some usefule macros are defined here
#include <string.h>
#if !TARGET_API_MAC_CARBON
extern QDGlobals* gQDPtr;
#endif
//////////////////////////////////////
//
// general initialization and shutdown
//
NPError NS_PluginInitialize()
{
return NPERR_NO_ERROR;
}
void NS_PluginShutdown()
{
}
/////////////////////////////////////////////////////////////
//
// construction and destruction of our plugin instance object
//
nsPluginInstanceBase * NS_NewPluginInstance(nsPluginCreateData * aCreateDataStruct)
{
if(!aCreateDataStruct)
return NULL;
nsPluginInstance * plugin = new nsPluginInstance(aCreateDataStruct->instance);
return plugin;
}
void NS_DestroyPluginInstance(nsPluginInstanceBase * aPlugin)
{
if(aPlugin)
delete (nsPluginInstance *)aPlugin;
}
////////////////////////////////////////
//
// nsPluginInstance class implementation
//
nsPluginInstance::nsPluginInstance(NPP aInstance) : nsPluginInstanceBase(),
mInstance(aInstance),
mInitialized(FALSE),
mScriptablePeer(NULL)
{
mWindow = NULL;
mString[0] = '\0';
}
nsPluginInstance::~nsPluginInstance()
{
// mScriptablePeer may be also held by the browser
// so releasing it here does not guarantee that it is over
// we should take precaution in case it will be called later
// and zero its mPlugin member
mScriptablePeer->SetInstance(NULL);
NS_IF_RELEASE(mScriptablePeer);
}
NPBool nsPluginInstance::init(NPWindow* aWindow)
{
if(aWindow == NULL)
return FALSE;
mWindow = aWindow;
mInitialized = TRUE;
mSaveClip = NewRgn();
return TRUE;
}
void nsPluginInstance::shut()
{
mWindow = NULL;
mInitialized = FALSE;
}
NPBool nsPluginInstance::isInitialized()
{
return mInitialized;
}
/////////////////////////////////////////////////////////////
//
// DrawString
//
void
nsPluginInstance::DrawString(const unsigned char* text,
short width,
short height,
short centerX,
Rect drawRect)
{
short length, textHeight, textWidth;
if(text == NULL)
return;
length = strlen((char*)text);
TextFont(1);
TextFace(bold);
TextMode(srcCopy);
TextSize(12);
FontInfo fontInfo;
GetFontInfo(&fontInfo);
textHeight = fontInfo.ascent + fontInfo.descent + fontInfo.leading;
textWidth = TextWidth(text, 0, length);
if (width > textWidth && height > textHeight)
{
MoveTo(centerX - (textWidth >> 1), height >> 1);
DrawText(text, 0, length);
}
}
/////////////////////////////////////////////////////////////
//
// DoDraw - paint
//
void
nsPluginInstance::DoDraw(void)
{
Rect drawRect;
RGBColor black = { 0x0000, 0x0000, 0x0000 };
RGBColor white = { 0xFFFF, 0xFFFF, 0xFFFF };
SInt32 height = mWindow->height;
SInt32 width = mWindow->width;
SInt32 centerX = (width) >> 1;
SInt32 centerY = (height) >> 1;
UInt8 *pTheText = (unsigned char*) mString;
drawRect.top = 0;
drawRect.left = 0;
drawRect.bottom = drawRect.top + height;
drawRect.right = drawRect.left + width;
PenNormal();
RGBForeColor(&black);
RGBBackColor(&white);
#if !TARGET_API_MAC_CARBON
FillRect(&drawRect, &(gQDPtr->white));
#else
Pattern qdWhite;
FillRect(&drawRect, GetQDGlobalsWhite(&qdWhite));
#endif
FrameRect(&drawRect);
DrawString(pTheText, width, height, centerX, drawRect);
}
/////////////////////////////////////////////////////////////
//
// SetWindow
//
NPError
nsPluginInstance::SetWindow(NPWindow* window)
{
mWindow = window;
if( StartDraw(window) ) {
DoDraw();
EndDraw(window);
}
return NPERR_NO_ERROR;
}
/////////////////////////////////////////////////////////////
//
// HandleEvent
//
uint16
nsPluginInstance::HandleEvent(void* event)
{
int16 eventHandled = FALSE;
EventRecord* ev = (EventRecord*) event;
if (event != NULL)
{
switch (ev->what)
{
/*
* Draw ourselves on update events
*/
case updateEvt:
if( StartDraw(mWindow) ) {
DoDraw();
EndDraw(mWindow);
}
eventHandled = true;
break;
default:
break;
}
}
return eventHandled;
}
/////////////////////////////////////////////////////////////
//
// StartDraw - setup port state
//
NPBool
nsPluginInstance::StartDraw(NPWindow* window)
{
if (mWindow == NULL)
return false;
NP_Port* npport = (NP_Port*) mWindow->window;
CGrafPtr ourPort = npport->port;
if (mWindow->clipRect.left < mWindow->clipRect.right)
{
GetPort(&mSavePort);
SetPort((GrafPtr) ourPort);
Rect portRect;
#if !TARGET_API_MAC_CARBON
portRect = ourPort->portRect;
#else
GetPortBounds(ourPort, &portRect);
#endif
mSavePortTop = portRect.top;
mSavePortLeft = portRect.left;
GetClip(mSaveClip);
mRevealedRect.top = mWindow->clipRect.top + npport->porty;
mRevealedRect.left = mWindow->clipRect.left + npport->portx;
mRevealedRect.bottom = mWindow->clipRect.bottom + npport->porty;
mRevealedRect.right = mWindow->clipRect.right + npport->portx;
SetOrigin(npport->portx, npport->porty);
ClipRect(&mRevealedRect);
return true;
}
else
return false;
}
/////////////////////////////////////////////////////////////
//
// EndDraw - restore port state
//
void
nsPluginInstance::EndDraw(NPWindow* window)
{
SetOrigin(mSavePortLeft, mSavePortTop);
SetClip(mSaveClip);
SetPort(mSavePort);
}
// this will force to draw a version string in the plugin window
void nsPluginInstance::showVersion()
{
const char *ua = NPN_UserAgent(mInstance);
strcpy(mString, ua);
StartDraw(mWindow);
DoDraw();
EndDraw(mWindow);
}
// this will clean the plugin window
void nsPluginInstance::clear()
{
strcpy(mString, "");
StartDraw(mWindow);
DoDraw();
EndDraw(mWindow);
}
// ==============================
// ! Scriptability related code !
// ==============================
//
// here the plugin is asked by Mozilla to tell if it is scriptable
// we should return a valid interface id and a pointer to
// nsScriptablePeer interface which we should have implemented
// and which should be defined in the corressponding *.xpt file
// in the bin/components folder
NPError nsPluginInstance::GetValue(NPPVariable aVariable, void *aValue)
{
NPError rv = NPERR_NO_ERROR;
switch (aVariable) {
case NPPVpluginScriptableInstance: {
// addref happens in getter, so we don't addref here
nsIScriptablePluginSample * scriptablePeer = getScriptablePeer();
if (scriptablePeer) {
*(nsISupports **)aValue = scriptablePeer;
} else
rv = NPERR_OUT_OF_MEMORY_ERROR;
}
break;
case NPPVpluginScriptableIID: {
static nsIID scriptableIID = NS_ISCRIPTABLEPLUGINSAMPLE_IID;
nsIID* ptr = (nsIID *)NPN_MemAlloc(sizeof(nsIID));
if (ptr) {
*ptr = scriptableIID;
*(nsIID **)aValue = ptr;
} else
rv = NPERR_OUT_OF_MEMORY_ERROR;
}
break;
default:
break;
}
return rv;
}
// ==============================
// ! Scriptability related code !
// ==============================
//
// this method will return the scriptable object (and create it if necessary)
nsScriptablePeer* nsPluginInstance::getScriptablePeer()
{
if (!mScriptablePeer) {
mScriptablePeer = new nsScriptablePeer(this);
if(!mScriptablePeer)
return NULL;
NS_ADDREF(mScriptablePeer);
}
// add reference for the caller requesting the object
NS_ADDREF(mScriptablePeer);
return mScriptablePeer;
}