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Intoduce new osgWidget::PdfReader and osgWidget::VncClient front ends to osgWidget,

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with new pdf plugin and updated vnc plugin that now support these front ends.

Updated osgpdf and osgvnc examples to new these new interfaces.
This commit is contained in:
Robert Osfield 2008-12-07 17:02:30 +00:00
parent 0114ac4734
commit 6f356aeb97
20 changed files with 752 additions and 476 deletions
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2
examples/CMakeLists.txt
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@ -133,9 +133,7 @@ IF(DYNAMIC_OPENSCENEGRAPH)
ADD_SUBDIRECTORY(osgwidgettable)
ADD_SUBDIRECTORY(osgwidgetwindow)
IF (POPPLER_FOUND AND CAIRO_FOUND)
ADD_SUBDIRECTORY(osgpdf)
ENDIF(POPPLER_FOUND AND CAIRO_FOUND)
IF (BUILD_OSG_WRAPPERS)
ADD_SUBDIRECTORY(osgintrospection)

6
examples/osgpdf/CMakeLists.txt
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@ -1,10 +1,6 @@
SET(TARGET_SRC osgpdf.cpp)
INCLUDE_DIRECTORIES( ${CAIRO_INCLUDE_DIRS} ${POPPLER_INCLUDE_DIRS} )
LINK_DIRECTORIES(${CAIRO_LIBRARY_DIRS} ${POPPLER_LIB_DIRS})
#SET(TARGET_EXTERNAL_LIBRARIES ${CAIRO_LIBRARIES} poppler poppler-glib)
SET(TARGET_EXTERNAL_LIBRARIES ${CAIRO_LIBRARIES} ${POPPLER_LIBRARIES})
SET(TARGET_ADDED_LIBRARIES osgWidget )
#### end var setup ###
SETUP_EXAMPLE(osgpdf)

303
examples/osgpdf/osgpdf.cpp
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@ -10,315 +10,38 @@
#include <osgDB/FileNameUtils>
#include <osgDB/ReadFile>
#include <cairo.h>
#include <poppler.h>
class CarioImage : public osg::Image
{
public:
CarioImage():
_surface(0),
_context(0) {}
void create(unsigned int width, unsigned int height)
{
if (data() && width==s() && height==t()) return;
osg::notify(osg::NOTICE)<<"Create cario surface/context "<<width<<", "<<height<<std::endl;
// allocate the image data
allocateImage(width, height, 1, GL_RGBA, GL_UNSIGNED_BYTE);
setPixelFormat(GL_BGRA);
setDataVariance(osg::Object::DYNAMIC);
setOrigin(osg::Image::TOP_LEFT);
// create a cairo surface for this image data
_surface = cairo_image_surface_create_for_data(
data(),
CAIRO_FORMAT_ARGB32,
width, height,
getRowSizeInBytes());
// create a context for the surface
_context = cairo_create(_surface);
}
void destroy()
{
if (_surface) cairo_surface_destroy(_surface);
if (_context) cairo_destroy(_context);
}
cairo_surface_t* getSurface() { return _surface; }
const cairo_surface_t* getSurface() const { return _surface; }
cairo_t* getContext() { return _context; }
const cairo_t* getContext() const { return _context; }
protected:
virtual ~CarioImage()
{
destroy();
}
cairo_surface_t* _surface;
cairo_t* _context;
};
class PdfImage : public CarioImage
{
public:
PdfImage():
_doc(0),
_pageNum(0)
{
}
virtual ~PdfImage()
{
if (_doc)
{
g_object_unref(_doc);
}
}
PopplerDocument* _doc;
int _pageNum;
int getNumOfPages() { return _doc ? poppler_document_get_n_pages(_doc) : 0; }
bool open(const std::string& filename)
{
osg::notify(osg::NOTICE)<<"open("<<filename<<")"<<std::endl;
std::string foundFile = osgDB::findDataFile(filename);
if (foundFile.empty())
{
osg::notify(osg::NOTICE)<<"could not find filename="<<filename<<std::endl;
return false;
}
osg::notify(osg::NOTICE)<<"foundFile = "<<foundFile<<std::endl;
foundFile = osgDB::getRealPath(foundFile);
osg::notify(osg::NOTICE)<<"foundFile = "<<foundFile<<std::endl;
static bool gTypeInit = false;
if(!gTypeInit)
{
g_type_init();
gTypeInit = true;
}
std::string uri = std::string("file:") + foundFile;
PopplerDocument* doc = poppler_document_new_from_file(uri.c_str(), NULL, NULL);
if (!doc)
{
osg::notify(osg::NOTICE)<<" could not open("<<filename<<"), uri="<<uri<<std::endl;
return false;
}
if (_doc)
{
g_object_unref(_doc);
}
_doc = doc;
_pageNum = 0;
setFileName(filename);
osg::notify(osg::NOTICE)<<"getNumOfPages()=="<<getNumOfPages()<<std::endl;
if (getNumOfPages()==0)
{
return false;
}
page(0);
return true;
}
virtual void sendKeyEvent(int key, bool keyDown)
{
if (keyDown)
{
if (key=='n') next();
else if (key=='p') previous();
}
}
bool previous()
{
return page(_pageNum-1);
}
bool next()
{
return page(_pageNum+1);
}
bool page(int pageNum)
{
if (!_doc) return false;
if (pageNum<0 || pageNum>=getNumOfPages()) return false;
PopplerPage* page = poppler_document_get_page(_doc, pageNum);
if(!page) return false;
_pageNum = pageNum;
double w = 0.0f;
double h = 0.0f;
poppler_page_get_size(page, &w, &h);
create((unsigned int)(w*2.0),(unsigned int)(h*2.0));
double r = 1.0;
double g = 1.0;
double b = 1.0;
double a = 1.0;
cairo_save(_context);
cairo_set_source_rgba(_context, r, g, b, a);
cairo_rectangle(_context, 0.0, 0.0, double(s()), double(t()));
cairo_fill(_context);
cairo_scale(_context, double(s())/w, double(t())/h);
poppler_page_render(page, getContext());
cairo_restore(_context);
dirty();
}
};
osg::Node* createInteractiveQuad(const osg::Vec3& origin, osg::Vec3& widthAxis, osg::Vec3& heightAxis,
osg::Image* image)
{
bool flip = image->getOrigin()==osg::Image::TOP_LEFT;
osg::Geometry* pictureQuad = osg::createTexturedQuadGeometry(origin, widthAxis, heightAxis,
0.0f, flip ? 1.0f : 0.0f , 1.0f, flip ? 0.0f : 1.0f);
osg::Texture2D* texture = new osg::Texture2D(image);
texture->setResizeNonPowerOfTwoHint(false);
texture->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR);
texture->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP_TO_EDGE);
texture->setWrap(osg::Texture::WRAP_T, osg::Texture::CLAMP_TO_EDGE);
pictureQuad->getOrCreateStateSet()->setTextureAttributeAndModes(0,
texture,
osg::StateAttribute::ON);
pictureQuad->setEventCallback(new osgViewer::InteractiveImageHandler(image));
osg::Geode* geode = new osg::Geode;
geode->addDrawable(pictureQuad);
return geode;
}
class PageHandler : public osgGA::GUIEventHandler
{
public:
PageHandler() {}
bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& aa)
{
if (ea.getHandled()) return false;
switch(ea.getEventType())
{
case(osgGA::GUIEventAdapter::KEYDOWN):
{
if (ea.getKey()=='n')
{
osg::notify(osg::NOTICE)<<"Next page"<<std::endl;
return true;
}
else
if (ea.getKey()=='p')
{
osg::notify(osg::NOTICE)<<"Previous page"<<std::endl;
return true;
}
}
default:
return false;
}
return false;
}
};
#include <osgWidget/PdfReader>
int main(int argc,char** argv)
{
osg::ArgumentParser arguments(&argc, argv);
osgViewer::Viewer viewer(arguments);
typedef std::list< osg::ref_ptr<osg::Image> > Images;
Images images;
osgWidget::GeometryHints hints(osg::Vec3(1.0f,0.0f,0.0f),
osg::Vec3(1.0f,0.0f,0.0f),
osg::Vec3(0.0f,0.0f,1.0f),
osgWidget::GeometryHints::RESIZE_HEIGHT_TO_MAINTAINCE_ASPECT_RATIO);
osg::ref_ptr<osg::Group> group = new osg::Group;
for(int i=1; i<arguments.argc(); ++i)
{
if (!arguments.isOption(i))
{
osg::ref_ptr<PdfImage> pdfImage= new PdfImage;
if (pdfImage->open(arguments[i]))
osg::ref_ptr<osgWidget::PdfReader> pdfReader = new osgWidget::PdfReader;
if (pdfReader->open(arguments[i], hints))
{
images.push_back(pdfImage.get());
group->addChild(pdfReader.get());
hints.position.x() += 1.1f;
}
}
}
bool xyPlane = false;
osg::Group* group = new osg::Group;
osg::Vec3 origin = osg::Vec3(0.0f,0.0f,0.0f);
for(Images::iterator itr = images.begin();
itr != images.end();
++itr)
{
osg::Image* image = itr->get();
float width = 1.0;
float height = float(image->t())/float(image->s());
osg::Vec3 widthAxis = osg::Vec3(width,0.0f,0.0f);
osg::Vec3 heightAxis = xyPlane ? osg::Vec3(0.0f,height,0.0f) : osg::Vec3(0.0f,0.0f,height);
group->addChild(createInteractiveQuad(origin, widthAxis, heightAxis, image));
origin += widthAxis*1.1f;
}
viewer.setSceneData(group);
viewer.setSceneData(group.get());
viewer.addEventHandler(new osgViewer::StatsHandler);
//viewer.addEventHandler(new PageHandler);
return viewer.run();
}

84
examples/osgvnc/osgvnc.cpp
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@ -12,38 +12,6 @@
#include <osgDB/ReadFile>
osg::Node* createInteractiveQuad(const osg::Vec3& origin, osg::Vec3& widthAxis, osg::Vec3& heightAxis,
osg::Image* image)
{
bool flip = image->getOrigin()==osg::Image::TOP_LEFT;
osg::Geometry* pictureQuad = osg::createTexturedQuadGeometry(origin, widthAxis, heightAxis,
0.0f, flip ? 1.0f : 0.0f , 1.0f, flip ? 0.0f : 1.0f);
osg::Texture2D* texture = new osg::Texture2D(image);
texture->setResizeNonPowerOfTwoHint(false);
texture->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR);
texture->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP_TO_EDGE);
texture->setWrap(osg::Texture::WRAP_T, osg::Texture::CLAMP_TO_EDGE);
pictureQuad->getOrCreateStateSet()->setTextureAttributeAndModes(0,
texture,
osg::StateAttribute::ON);
osg::ref_ptr<osgViewer::InteractiveImageHandler> callback = new osgViewer::InteractiveImageHandler(image);
pictureQuad->setEventCallback(callback.get());
pictureQuad->setCullCallback(callback.get());
osg::Geode* geode = new osg::Geode;
geode->addDrawable(pictureQuad);
return geode;
}
class EscapeHandler : public osgGA::GUIEventHandler
{
public:
@ -76,45 +44,31 @@ class EscapeHandler : public osgGA::GUIEventHandler
int main(int argc,char** argv)
{
osg::ArgumentParser arguments(&argc, argv);
osgViewer::Viewer viewer;
osgViewer::Viewer viewer(arguments);
typedef std::list< osg::ref_ptr<osg::Image> > Images;
Images images;
osgWidget::GeometryHints hints(osg::Vec3(1.0f,0.0f,0.0f),
osg::Vec3(1.0f,0.0f,0.0f),
osg::Vec3(0.0f,0.0f,1.0f),
osgWidget::GeometryHints::RESIZE_HEIGHT_TO_MAINTAINCE_ASPECT_RATIO);
std::string hostname;
while (arguments.read("--host",hostname))
osg::ref_ptr<osg::Group> group = new osg::Group;
for(int i=1; i<arguments.argc(); ++i)
{
osg::ref_ptr<osg::Image> image = osgDB::readImageFile(hostname+std::string(".vnc"));
if (image.valid()) images.push_back(image.get());
if (!arguments.isOption(i))
{
osg::ref_ptr<osgWidget::VncClient> vncClient = new osgWidget::VncClient;
if (vncClient->connect(arguments[i], hints))
{
group->addChild(vncClient.get());
hints.position.x() += 1.1f;
}
}
}
if (images.empty())
{
return 1;
}
bool xyPlane = false;
osg::Group* group = new osg::Group;
osg::Vec3 origin = osg::Vec3(0.0f,0.0f,0.0f);
for(Images::iterator itr = images.begin();
itr != images.end();
++itr)
{
osg::Image* image = itr->get();
float width = 1.0;
float height = float(image->t())/float(image->s());
osg::Vec3 widthAxis = osg::Vec3(width,0.0f,0.0f);
osg::Vec3 heightAxis = xyPlane ? osg::Vec3(0.0f,height,0.0f) : osg::Vec3(0.0f,0.0f,height);
group->addChild(createInteractiveQuad(origin, widthAxis, heightAxis, image));
origin += widthAxis*1.1f;
}
viewer.setSceneData(group);
viewer.setSceneData(group.get());
viewer.addEventHandler(new osgViewer::StatsHandler);

5
examples/osgwidgetscrolled/CMakeLists.txt
View File

@ -1,7 +1,6 @@
#this file is automatically generated
SET(TARGET_SRC osgwidgetscrolled.cpp )
SET(TARGET_ADDED_LIBRARIES osgWidget )
#### end var setup ###
SETUP_EXAMPLE(osgwidgetscrolled)

8
include/osg/Image
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@ -324,11 +324,11 @@ class OSG_EXPORT Image : public Object
virtual void update(NodeVisitor* nv) {}
/** method for sending pointer events to images that are acting as front ends to interactive surfaces such as a vnc or browser window.*/
virtual void sendPointerEvent(int x, int y, int buttonMask) {}
/** method for sending pointer events to images that are acting as front ends to interactive surfaces such as a vnc or browser window. Return true if handled. */
virtual bool sendPointerEvent(int x, int y, int buttonMask) { return false; }
/** method for sending key events to images that are acting as front ends to interactive surfaces such as a vnc or browser window.*/
virtual void sendKeyEvent(int key, bool keyDown) {}
/** method for sending key events to images that are acting as front ends to interactive surfaces such as a vnc or browser window. Return true if handled.*/
virtual bool sendKeyEvent(int key, bool keyDown) { return false; }
/** method for passing frame information to the custom Image classes, to be called only when objects associated with imagery are not culled.*/
virtual void setFrameLastRendered(const osg::FrameStamp* frameStamp) {}

4
include/osgViewer/ViewerEventHandlers
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@ -389,6 +389,10 @@ protected:
bool mousePosition(osgViewer::View* view, osg::NodeVisitor* nv, const osgGA::GUIEventAdapter& ea, int& x, int &y) const;
osg::observer_ptr<osg::Image> _image;
bool _handleKeyboardEvents;
bool _handledOnKeyboardEvents;
bool _handleMouseEvents;
bool _handledOnMouseEvents;
};

116
include/osgWidget/PdfReader Normal file
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@ -0,0 +1,116 @@
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2008 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* OpenSceneGraph Public License for more details.
*/
#ifndef OSGWIDGET_PDFREADER
#define OSGWIDGET_PDFREADER
#include <osg/Image>
#include <osg/Geode>
#include <osgWidget/Export>
namespace osgWidget {
/** Hints structure that can be passed to PdfReader and VncClient classes to help guide them on what geometry to build.*/
struct GeometryHints
{
enum AspectRatioPolicy
{
RESIZE_HEIGHT_TO_MAINTAINCE_ASPECT_RATIO,
RESIZE_WIDTH_TO_MAINTAINCE_ASPECT_RATIO,
IGNORE_DOCUMENT_ASPECT_RATIO,
};
GeometryHints():
position(0.0f,0.0f,0.0f),
widthVec(1.0f,0.0f,0.0f),
heightVec(0.0f,1.0f,0.0f),
aspectRatioPolicy(RESIZE_HEIGHT_TO_MAINTAINCE_ASPECT_RATIO) {}
GeometryHints(const osg::Vec3& pos,
const osg::Vec3& wVec,
const osg::Vec3& hVec,
AspectRatioPolicy asp=RESIZE_HEIGHT_TO_MAINTAINCE_ASPECT_RATIO):
position(pos),
widthVec(wVec),
heightVec(hVec),
aspectRatioPolicy(asp) {}
osg::Vec3 position;
osg::Vec3 widthVec;
osg::Vec3 heightVec;
AspectRatioPolicy aspectRatioPolicy;
};
/** Pure virtual base class for interfacing with implementation of PDF reader.*/
class PdfImage : public osg::Image
{
public:
PdfImage():_pageNum(0) {}
int getPageNum() const { return _pageNum; }
virtual int getNumOfPages() = 0;
virtual bool page(int pageNum) = 0;
bool previous()
{
return page(_pageNum-1);
}
bool next()
{
return page(_pageNum+1);
}
protected:
virtual ~PdfImage() {}
int _pageNum;
};
/** Convinience class that provides a interactive quad that can be placed directly in the scene.*/
class OSGWIDGET_EXPORT PdfReader : public osg::Geode
{
public:
PdfReader() {}
PdfReader(const std::string& filename, GeometryHints hints = GeometryHints());
bool assign(PdfImage* pdfImage, GeometryHints hints = GeometryHints());
bool open(const std::string& filename, GeometryHints hints = GeometryHints());
bool page(int pageNum);
bool previous();
bool next();
protected:
osg::ref_ptr<PdfImage> _pdfImage;
};
}
#endif

63
include/osgWidget/VncClient Normal file
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@ -0,0 +1,63 @@
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2008 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* OpenSceneGraph Public License for more details.
*/
#ifndef OSGWIDGET_VNCCLIENT
#define OSGWIDGET_VNCCLIENT
#include <osgDB/ReaderWriter>
#include <osgWidget/PdfReader>
namespace osgWidget {
/** Pure virtual base class for VncImage that is sublcassed by vnc plugin to provide the actual implementation.*/
class VncImage : public osg::Image
{
public:
VncImage() {}
virtual bool connect(const std::string& hostname) = 0;
virtual void close() = 0;
protected:
virtual ~VncImage() {}
};
/** Convinience Vnc Client class that provides a interactive quad that can be placed directly in the scene.*/
class OSGWIDGET_EXPORT VncClient : public osg::Geode
{
public:
VncClient() {}
VncClient(const std::string& hostname, GeometryHints hints = GeometryHints());
bool assign(VncImage* vncImage, GeometryHints hints = GeometryHints());
bool connect(const std::string& hostname, GeometryHints hints = GeometryHints());
void close();
protected:
osg::ref_ptr<VncImage> _vncImage;
};
}
#endif

3
src/osgPlugins/CMakeLists.txt
View File

@ -196,6 +196,9 @@ IF(RSVG_FOUND AND CAIRO_FOUND)
ADD_SUBDIRECTORY(svg)
ENDIF(RSVG_FOUND AND CAIRO_FOUND)
IF (POPPLER_FOUND AND CAIRO_FOUND)
ADD_SUBDIRECTORY(pdf)
ENDIF(POPPLER_FOUND AND CAIRO_FOUND)
IF (LIBVNCSERVER_FOUND)
ADD_SUBDIRECTORY(vnc)

18
src/osgPlugins/gecko/UBrowser.cpp
View File

@ -478,7 +478,7 @@ struct PointerEventOperation : public osg::Operation
int _buttonDelta;
};
void UBrowserManager::sendPointerEvent(UBrowserImage* image, int x, int y, int buttonMask)
bool UBrowserManager::sendPointerEvent(UBrowserImage* image, int x, int y, int buttonMask)
{
int deltaButton = (buttonMask&1) - (_previousButtonMask&1);
_previousButtonMask = buttonMask;
@ -486,6 +486,8 @@ void UBrowserManager::sendPointerEvent(UBrowserImage* image, int x, int y, int b
_thread->add(new PointerEventOperation(image, x, y, deltaButton));
active(image);
return true;
}
@ -509,15 +511,17 @@ struct KeyEventOperation : public osg::Operation
bool _isUnicode;
};
void UBrowserManager::sendKeyEvent(UBrowserImage* image, int key, bool keyDown)
bool UBrowserManager::sendKeyEvent(UBrowserImage* image, int key, bool keyDown)
{
if (!keyDown) return;
if (!keyDown) return false;
KeyMap::const_iterator itr = _keyMap.find(key);
if (_keyMap.find(key)==_keyMap.end()) _thread->add(new KeyEventOperation(image, key, true));
else _thread->add(new KeyEventOperation(image, itr->second, false));
active(image);
return true;
}
@ -582,14 +586,14 @@ UBrowserImage::~UBrowserImage()
_manager->unregisterUBrowserImage(this);
}
void UBrowserImage::sendPointerEvent(int x, int y, int buttonMask)
bool UBrowserImage::sendPointerEvent(int x, int y, int buttonMask)
{
_manager->sendPointerEvent(this, x, y, buttonMask);
return _manager->sendPointerEvent(this, x, y, buttonMask);
}
void UBrowserImage::sendKeyEvent(int key, bool keyDown)
bool UBrowserImage::sendKeyEvent(int key, bool keyDown)
{
_manager->sendKeyEvent(this, key, keyDown);
return _manager->sendKeyEvent(this, key, keyDown);
}
void UBrowserImage::setFrameLastRendered(const osg::FrameStamp*)

8
src/osgPlugins/gecko/UBrowser.h
View File

@ -60,9 +60,9 @@ class UBrowserManager : public osgWidget::BrowserManager
if (itr != _ubrowserImageList.end()) _ubrowserImageList.erase(itr);
}
void sendKeyEvent(UBrowserImage* image, int key, bool keyDown);
bool sendKeyEvent(UBrowserImage* image, int key, bool keyDown);
void sendPointerEvent(UBrowserImage* image, int x, int y, int buttonMask);
bool sendPointerEvent(UBrowserImage* image, int x, int y, int buttonMask);
void navigateTo(UBrowserImage* image, const std::string& page);
@ -108,9 +108,9 @@ class UBrowserImage : public osgWidget::BrowserImage, public LLEmbeddedBrowserWi
const std::string& getHomeURL() const { return _homeURL; }
virtual void sendPointerEvent(int x, int y, int buttonMask);
virtual bool sendPointerEvent(int x, int y, int buttonMask);
virtual void sendKeyEvent(int key, bool keyDown);
virtual bool sendKeyEvent(int key, bool keyDown);
virtual void setFrameLastRendered(const osg::FrameStamp* frameStamp);

10
src/osgPlugins/pdf/CMakeLists.txt Normal file
View File

@ -0,0 +1,10 @@
SET(TARGET_SRC ReaderWriterPDF.cpp )
INCLUDE_DIRECTORIES( ${CAIRO_INCLUDE_DIRS} ${POPPLER_INCLUDE_DIRS} )
LINK_DIRECTORIES(${CAIRO_LIBRARY_DIRS} ${POPPLER_LIB_DIRS})
SET(TARGET_EXTERNAL_LIBRARIES ${CAIRO_LIBRARIES} ${POPPLER_LIBRARIES} )
SET(TARGET_ADDED_LIBRARIES osgWidget )
#### end var setup ###
SETUP_PLUGIN(pdf)

292
src/osgPlugins/pdf/ReaderWriterPDF.cpp Normal file
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@ -0,0 +1,292 @@
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1999-2008 Robert Osfield
*
* This software is open source and may be redistributed and/or modified under
* the terms of the GNU General Public License (GPL) version 2.0.
* The full license is in LICENSE.txt file included with this distribution,.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* include LICENSE.txt for more details.
*/
#include <osgDB/ReaderWriter>
#include <osgDB/FileNameUtils>
#include <osgDB/Registry>
#include <osgDB/FileUtils>
#include <osgWidget/PdfReader>
#include <cairo.h>
#include <poppler.h>
class CairoImage : public osg::Referenced
{
public:
CairoImage(osg::Image* image):
_image(image),
_surface(0),
_context(0) {}
void create(unsigned int width, unsigned int height)
{
if (_image->data() && width==_image->s() && height==_image->t()) return;
osg::notify(osg::NOTICE)<<"Create cario surface/context "<<width<<", "<<height<<std::endl;
// allocate the image data
_image->allocateImage(width, height, 1, GL_RGBA, GL_UNSIGNED_BYTE);
_image->setPixelFormat(GL_BGRA);
_image->setDataVariance(osg::Object::DYNAMIC);
_image->setOrigin(osg::Image::TOP_LEFT);
// create a cairo surface for this image data
_surface = cairo_image_surface_create_for_data(
_image->data(),
CAIRO_FORMAT_ARGB32,
width, height,
_image->getRowSizeInBytes());
// create a context for the surface
_context = cairo_create(_surface);
}
void destroy()
{
if (_surface) cairo_surface_destroy(_surface);
if (_context) cairo_destroy(_context);
}
cairo_surface_t* getSurface() { return _surface; }
const cairo_surface_t* getSurface() const { return _surface; }
cairo_t* getContext() { return _context; }
const cairo_t* getContext() const { return _context; }
protected:
virtual ~CairoImage()
{
destroy();
}
osg::observer_ptr<osg::Image> _image;
cairo_surface_t* _surface;
cairo_t* _context;
};
class PopplerPdfImage : public osgWidget::PdfImage
{
public:
PopplerPdfImage():
_doc(0)
{
_cairoImage = new CairoImage(this);
}
virtual ~PopplerPdfImage()
{
_cairoImage = 0;
if (_doc)
{
g_object_unref(_doc);
}
}
PopplerDocument* _doc;
int getNumOfPages() { return _doc ? poppler_document_get_n_pages(_doc) : 0; }
bool open(const std::string& filename)
{
osg::notify(osg::NOTICE)<<"open("<<filename<<")"<<std::endl;
std::string foundFile = osgDB::findDataFile(filename);
if (foundFile.empty())
{
osg::notify(osg::NOTICE)<<"could not find filename="<<filename<<std::endl;
return false;
}
osg::notify(osg::NOTICE)<<"foundFile = "<<foundFile<<std::endl;
foundFile = osgDB::getRealPath(foundFile);
osg::notify(osg::NOTICE)<<"foundFile = "<<foundFile<<std::endl;
static bool gTypeInit = false;
if(!gTypeInit)
{
g_type_init();
gTypeInit = true;
}
std::string uri = std::string("file:") + foundFile;
PopplerDocument* doc = poppler_document_new_from_file(uri.c_str(), NULL, NULL);
if (!doc)
{
osg::notify(osg::NOTICE)<<" could not open("<<filename<<"), uri="<<uri<<std::endl;
return false;
}
if (_doc)
{
g_object_unref(_doc);
}
_doc = doc;
_pageNum = 0;
setFileName(filename);
osg::notify(osg::NOTICE)<<"getNumOfPages()=="<<getNumOfPages()<<std::endl;
if (getNumOfPages()==0)
{
return false;
}
page(0);
return true;
}
virtual bool sendKeyEvent(int key, bool keyDown)
{
if (keyDown)
{
if (key=='n')
{
next();
return true;
}
else if (key=='p')
{
previous();
return true;
}
}
return false;
}
virtual bool page(int pageNum)
{
if (!_doc) return false;
if (pageNum<0 || pageNum>=getNumOfPages()) return false;
PopplerPage* page = poppler_document_get_page(_doc, pageNum);
if(!page) return false;
_pageNum = pageNum;
double w = 0.0f;
double h = 0.0f;
poppler_page_get_size(page, &w, &h);
_cairoImage->create((unsigned int)(w*2.0),(unsigned int)(h*2.0));
double r = 1.0;
double g = 1.0;
double b = 1.0;
double a = 1.0;
cairo_save(_cairoImage->getContext());
cairo_set_source_rgba(_cairoImage->getContext(), r, g, b, a);
cairo_rectangle(_cairoImage->getContext(), 0.0, 0.0, double(s()), double(t()));
cairo_fill(_cairoImage->getContext());
cairo_scale(_cairoImage->getContext(), double(s())/w, double(t())/h);
poppler_page_render(page, _cairoImage->getContext());
cairo_restore(_cairoImage->getContext());
dirty();
}
protected:
osg::ref_ptr<CairoImage> _cairoImage;
};
class ReaderWriterPDF : public osgDB::ReaderWriter
{
public:
ReaderWriterPDF()
{
supportsExtension("pdf","PDF plugin");
}
virtual const char* className() const { return "PDF plugin"; }
virtual osgDB::ReaderWriter::ReadResult readObject(const std::string& file, const osgDB::ReaderWriter::Options* options) const
{
return readImage(file,options);
}
virtual osgDB::ReaderWriter::ReadResult readImage(const std::string& fileName, const osgDB::ReaderWriter::Options* options) const
{
if (!osgDB::equalCaseInsensitive(osgDB::getFileExtension(fileName),"pdf"))
{
return osgDB::ReaderWriter::ReadResult::FILE_NOT_HANDLED;
}
std::string file = osgDB::findDataFile(fileName);
if (file.empty())
{
return osgDB::ReaderWriter::ReadResult::FILE_NOT_FOUND;
}
osg::ref_ptr<PopplerPdfImage> image = new PopplerPdfImage;
image->setDataVariance(osg::Object::DYNAMIC);
image->setOrigin(osg::Image::TOP_LEFT);
if (!image->open(file))
{
return "Could not open "+file;
}
return image.get();
}
virtual osgDB::ReaderWriter::ReadResult readNode(const std::string& fileName, const osgDB::ReaderWriter::Options* options) const
{
osgDB::ReaderWriter::ReadResult result = readImage(fileName, options);
if (!result.validImage()) return result;
osg::ref_ptr<osgWidget::PdfReader> pdfReader = new osgWidget::PdfReader();
if (pdfReader->assign(dynamic_cast<osgWidget::PdfImage*>(result.getImage())))
{
return pdfReader.release();
}
else
{
return osgDB::ReaderWriter::ReadResult::FILE_NOT_HANDLED;
}
}
};
// now register with Registry to instantiate the above
// reader/writer.
osgDB::RegisterReaderWriterProxy<ReaderWriterPDF> g_readerWriter_PDF_Proxy;

2
src/osgPlugins/vnc/CMakeLists.txt
View File

@ -4,7 +4,7 @@ INCLUDE_DIRECTORIES(${LIBVNCCLIENT_INCLUDE_DIR})
SET(TARGET_EXTERNAL_LIBRARIES ${LIBVNCCLIENT_LIBRARY} ${ZLIB_LIBRARY} ${JPEG_LIBRARY} )
SET(TARGET_ADDED_LIBRARIES osgViewer )
SET(TARGET_ADDED_LIBRARIES osgWidget )
#### end var setup ###
SETUP_PLUGIN(vnc)

115
src/osgPlugins/vnc/ReaderWriterVNC.cpp
View File

@ -16,32 +16,30 @@
#include <osgDB/FileNameUtils>
#include <osgDB/Registry>
#include <osgViewer/ViewerEventHandlers>
#include <osgWidget/VncClient>
extern "C" {
#include <rfb/rfbclient.h>
}
class VncImage : public osg::Image
class LibVncImage : public osgWidget::VncImage
{
public:
VncImage();
LibVncImage();
bool connect(int* argc, char** argv);
bool connect(const std::string& hostname, const osgDB::ReaderWriter::Options* options);
bool connect(const std::string& hostname);
void close();
virtual void sendPointerEvent(int x, int y, int buttonMask);
virtual bool sendPointerEvent(int x, int y, int buttonMask);
double getTimeOfLastUpdate() const { return _timeOfLastUpdate; }
double getTimeOfLastRender() const { return _timeOfLastRender; }
double time() const { return osg::Timer::instance()->time_s(); }
virtual void sendKeyEvent(int key, bool keyDown);
virtual bool sendKeyEvent(int key, bool keyDown);
virtual void setFrameLastRendered(const osg::FrameStamp* frameStamp);
@ -59,13 +57,13 @@ class VncImage : public osg::Image
protected:
virtual ~VncImage();
virtual ~LibVncImage();
class RfbThread : public osg::Referenced, public OpenThreads::Thread
{
public:
RfbThread(rfbClient* client, VncImage* image):
RfbThread(rfbClient* client, LibVncImage* image):
_client(client),
_image(image),
_done(false) {}
@ -120,7 +118,7 @@ class VncImage : public osg::Image
}
rfbClient* _client;
osg::observer_ptr<VncImage> _image;
osg::observer_ptr<LibVncImage> _image;
bool _done;
};
@ -133,7 +131,7 @@ class VncImage : public osg::Image
};
VncImage::VncImage():
LibVncImage::LibVncImage():
_client(0)
{
// setPixelBufferObject(new osg::PixelBufferObject(this);
@ -142,40 +140,11 @@ VncImage::VncImage():
}
VncImage::~VncImage()
LibVncImage::~LibVncImage()
{
close();
}
bool VncImage::connect(int* argc, char** argv)
{
if (_client) close();
_client = rfbGetClient(8,3,4);
_client->canHandleNewFBSize = TRUE;
_client->MallocFrameBuffer = resizeImage;
_client->GotFrameBufferUpdate = updateImage;
_client->HandleKeyboardLedState = 0;
_client->HandleTextChat = 0;
rfbClientSetClientData(_client, 0, this);
if (rfbInitClient(_client,argc,argv))
{
_rfbThread = new RfbThread(_client, this);
_rfbThread->startThread();
return true;
}
else
{
close();
return false;
}
}
static rfbBool rfbInitConnection(rfbClient* client)
{
/* Unless we accepted an incoming connection, make a TCP connection to the
@ -229,7 +198,7 @@ static rfbBool rfbInitConnection(rfbClient* client)
}
bool VncImage::connect(const std::string& hostname, const osgDB::ReaderWriter::Options* options)
bool LibVncImage::connect(const std::string& hostname)
{
if (hostname.empty()) return false;
@ -268,7 +237,7 @@ bool VncImage::connect(const std::string& hostname, const osgDB::ReaderWriter::O
}
void VncImage::close()
void LibVncImage::close()
{
if (_rfbThread.valid())
{
@ -287,7 +256,7 @@ void VncImage::close()
}
rfbBool VncImage::resizeImage(rfbClient* client)
rfbBool LibVncImage::resizeImage(rfbClient* client)
{
osg::Image* image = (osg::Image*)(rfbClientGetClientData(client, 0));
@ -304,30 +273,32 @@ rfbBool VncImage::resizeImage(rfbClient* client)
return TRUE;
}
void VncImage::updateImage(rfbClient* client,int x,int y,int w,int h)
void LibVncImage::updateImage(rfbClient* client,int x,int y,int w,int h)
{
osg::Image* image = (osg::Image*)(rfbClientGetClientData(client, 0));
image->dirty();
}
void VncImage::sendPointerEvent(int x, int y, int buttonMask)
bool LibVncImage::sendPointerEvent(int x, int y, int buttonMask)
{
if (_client)
{
SendPointerEvent(_client ,x, y, buttonMask);
return true;
}
}
void VncImage::sendKeyEvent(int key, bool keyDown)
bool LibVncImage::sendKeyEvent(int key, bool keyDown)
{
if (_client)
{
SendKeyEvent(_client, key, keyDown ? TRUE : FALSE);
return true;
}
}
void VncImage::setFrameLastRendered(const osg::FrameStamp*)
void LibVncImage::setFrameLastRendered(const osg::FrameStamp*)
{
_timeOfLastRender = time();
@ -335,7 +306,7 @@ void VncImage::setFrameLastRendered(const osg::FrameStamp*)
_active = true;
}
void VncImage::updated()
void LibVncImage::updated()
{
_timeOfLastUpdate = time();
}
@ -367,12 +338,12 @@ class ReaderWriterVNC : public osgDB::ReaderWriter
osg::notify(osg::NOTICE)<<"Hostname = "<<hostname<<std::endl;
osg::ref_ptr<VncImage> image = new VncImage;
osg::ref_ptr<LibVncImage> image = new LibVncImage;
image->setDataVariance(osg::Object::DYNAMIC);
image->setOrigin(osg::Image::TOP_LEFT);
if (!image->connect(hostname, options))
if (!image->connect(hostname))
{
return "Could not connect to "+hostname;
}
@ -385,38 +356,16 @@ class ReaderWriterVNC : public osgDB::ReaderWriter
osgDB::ReaderWriter::ReadResult result = readImage(fileName, options);
if (!result.validImage()) return result;
osg::Image* image = result.getImage();
bool xyPlane = false;
bool flip = image->getOrigin()==osg::Image::TOP_LEFT;
osg::Vec3 origin = osg::Vec3(0.0f,0.0f,0.0f);
float width = 1.0;
float height = float(image->t())/float(image->s());
osg::Vec3 widthAxis = osg::Vec3(width,0.0f,0.0f);
osg::Vec3 heightAxis = xyPlane ? osg::Vec3(0.0f,height,0.0f) : osg::Vec3(0.0f,0.0f,height);
osg::Geometry* pictureQuad = osg::createTexturedQuadGeometry(origin, widthAxis, heightAxis,
0.0f, flip ? 1.0f : 0.0f , 1.0f, flip ? 0.0f : 1.0f);
osg::Texture2D* texture = new osg::Texture2D(image);
texture->setResizeNonPowerOfTwoHint(false);
texture->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR);
texture->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP_TO_EDGE);
texture->setWrap(osg::Texture::WRAP_T, osg::Texture::CLAMP_TO_EDGE);
pictureQuad->getOrCreateStateSet()->setTextureAttributeAndModes(0,
texture,
osg::StateAttribute::ON);
osg::ref_ptr<osgViewer::InteractiveImageHandler> callback = new osgViewer::InteractiveImageHandler(image);
pictureQuad->setEventCallback(callback.get());
pictureQuad->setCullCallback(callback.get());
osg::Geode* geode = new osg::Geode;
geode->addDrawable(pictureQuad);
return geode;
osg::ref_ptr<osgWidget::VncClient> vncClient = new osgWidget::VncClient();
if (vncClient->assign(dynamic_cast<osgWidget::VncImage*>(result.getImage())))
{
return vncClient.release();
}
else
{
return osgDB::ReaderWriter::ReadResult::FILE_NOT_HANDLED;
}
}
};

7
src/osgViewer/ViewerEventHandlers.cpp
View File

@ -705,8 +705,7 @@ bool InteractiveImageHandler::handle(const osgGA::GUIEventAdapter& ea,osgGA::GUI
int x,y;
if (mousePosition(view, nv, ea, x, y))
{
_image->sendPointerEvent(x, y, ea.getButtonMask());
return true;
return _image->sendPointerEvent(x, y, ea.getButtonMask());
}
break;
}
@ -719,9 +718,7 @@ bool InteractiveImageHandler::handle(const osgGA::GUIEventAdapter& ea,osgGA::GUI
if (sendKeyEvent)
{
_image->sendKeyEvent(ea.getKey(), ea.getEventType()==osgGA::GUIEventAdapter::KEYDOWN);
return true;
return _image->sendKeyEvent(ea.getKey(), ea.getEventType()==osgGA::GUIEventAdapter::KEYDOWN);
}
}

4
src/osgWidget/CMakeLists.txt
View File

@ -10,6 +10,8 @@ SET(LIB_PUBLIC_HEADERS
${HEADER_PATH}/Export
${HEADER_PATH}/Box
${HEADER_PATH}/Browser
${HEADER_PATH}/PdfReader
${HEADER_PATH}/VncClient
${HEADER_PATH}/Canvas
${HEADER_PATH}/EventInterface
${HEADER_PATH}/Frame
@ -37,6 +39,8 @@ ADD_LIBRARY(${LIB_NAME}
${LIB_PUBLIC_HEADERS}
Box.cpp
Browser.cpp
PdfReader.cpp
VncClient.cpp
Canvas.cpp
CMakeLists.txt
Frame.cpp

100
src/osgWidget/PdfReader.cpp Normal file
View File

@ -0,0 +1,100 @@
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2008 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* OpenSceneGraph Public License for more details.
*/
#include <osg/Geode>
#include <osgDB/ReadFile>
#include <osgViewer/ViewerEventHandlers>
#include <osgWidget/PdfReader>
#include <osg/io_utils>
using namespace osgWidget;
PdfReader::PdfReader(const std::string& filename, GeometryHints hints)
{
open(filename, hints);
}
bool PdfReader::assign(PdfImage* pdfImage, GeometryHints hints)
{
if (!pdfImage) return false;
_pdfImage = pdfImage;
bool flip = _pdfImage->getOrigin()==osg::Image::TOP_LEFT;
float aspectRatio = (_pdfImage->t()>0 && _pdfImage->s()>0) ? float(_pdfImage->t()) / float(_pdfImage->s()) : 1.0;
osg::Vec3 widthVec(hints.widthVec);
osg::Vec3 heightVec(hints.heightVec);
switch(hints.aspectRatioPolicy)
{
case(GeometryHints::RESIZE_HEIGHT_TO_MAINTAINCE_ASPECT_RATIO):
heightVec *= aspectRatio;
break;
case(GeometryHints::RESIZE_WIDTH_TO_MAINTAINCE_ASPECT_RATIO):
widthVec /= aspectRatio;
break;
default:
// no need to adjust aspect ratio
break;
}
osg::Geometry* pictureQuad = osg::createTexturedQuadGeometry(hints.position, widthVec, heightVec,
0.0f, flip ? 1.0f : 0.0f , 1.0f, flip ? 0.0f : 1.0f);
osg::Texture2D* texture = new osg::Texture2D(_pdfImage.get());
texture->setResizeNonPowerOfTwoHint(false);
texture->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR);
texture->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP_TO_EDGE);
texture->setWrap(osg::Texture::WRAP_T, osg::Texture::CLAMP_TO_EDGE);
pictureQuad->getOrCreateStateSet()->setTextureAttributeAndModes(0,
texture,
osg::StateAttribute::ON);
pictureQuad->setEventCallback(new osgViewer::InteractiveImageHandler(_pdfImage.get()));
addDrawable(pictureQuad);
return true;
}
bool PdfReader::open(const std::string& filename, GeometryHints hints)
{
osg::ref_ptr<osg::Image> image = osgDB::readImageFile(filename);
return assign(dynamic_cast<PdfImage*>(image.get()), hints);
}
bool PdfReader::page(int pageNum)
{
if (!_pdfImage) return false;
return _pdfImage->page(pageNum);
}
bool PdfReader::previous()
{
if (!_pdfImage) return false;
return _pdfImage->previous();
}
bool PdfReader::next()
{
if (!_pdfImage) return false;
return _pdfImage->next();
}

64
src/osgWidget/VncClient.cpp Normal file
View File

@ -0,0 +1,64 @@
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2008 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* OpenSceneGraph Public License for more details.
*/
#include <osgDB/ReadFile>
#include <osgViewer/ViewerEventHandlers>
#include <osgWidget/VncClient>
using namespace osgWidget;
VncClient::VncClient(const std::string& hostname, GeometryHints hints)
{
connect(hostname, hints);
}
bool VncClient::assign(VncImage* vncImage, GeometryHints hints)
{
if (!vncImage) return false;
_vncImage = vncImage;
bool flip = _vncImage->getOrigin()==osg::Image::TOP_LEFT;
osg::Geometry* pictureQuad = osg::createTexturedQuadGeometry(hints.position, hints.widthVec, hints.heightVec,
0.0f, flip ? 1.0f : 0.0f , 1.0f, flip ? 0.0f : 1.0f);
osg::Texture2D* texture = new osg::Texture2D(_vncImage.get());
texture->setResizeNonPowerOfTwoHint(false);
texture->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR);
texture->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP_TO_EDGE);
texture->setWrap(osg::Texture::WRAP_T, osg::Texture::CLAMP_TO_EDGE);
pictureQuad->getOrCreateStateSet()->setTextureAttributeAndModes(0,
texture,
osg::StateAttribute::ON);
pictureQuad->setEventCallback(new osgViewer::InteractiveImageHandler(_vncImage.get()));
addDrawable(pictureQuad);
return true;
}
bool VncClient::connect(const std::string& hostname, GeometryHints hints)
{
osg::ref_ptr<osg::Image> image = osgDB::readImageFile(hostname+".vnc");
return assign(dynamic_cast<VncImage*>(image.get()));
}
void VncClient::close()
{
if (!_vncImage) return;
_vncImage->close();
}