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OpenSceneGraph/src/osgViewer/GraphicsWindowWin32.cpp
Robert Osfield 056ce866b0 From André Garneau, " 
* Setup proper pixel format for ATI boards (removal of WGL_SWAP_METHOD_ARB specification from the requested pixel format since unsupported by the ATI driver)

    * Fix to create sample OpenGL window on the proper display device. This is the temporary window used to choose the desired pixel format. In the previous version, this window was always created on the primary display device, even though it had potentially different pixel formats compared to the target display device containing the window to be created.

    * Implementation of WindowingSystemInterface::setScreenResolution() method

    * Implementation of WindowingSystemInterface::setScreenRefreshRate() method

    * Implementation of GraphicsWindow::requestWarpPointer() method

    * Implementation of GraphicsWindow::useCursor() method and associated trait support. This can be used in two ways; first, when the graphics trait requested indicates that no cursor should be present, a new cursor-less window class is used to create the window. When a cursor-enabled window creation is requested, another window class is used. After creation of a window, it is also possible to toggle the cursor state by using the GraphicsWindow::useCursor method.

    * The way the mouse behaves is now compatible with the behaviour seen on X11; i.e. when pressing a mouse button, the window where the pointer is located will capture the mouse input and release it only after the button has been released. This results in all mouse movement events being dispatched to the window where the button was pressed initially until it is released. This improves the interaction with graphics windows.



    * Preparation work has been done to support the ability of moving a window from one screen to another screen and recreating its rendering context when this happens. This has been tested with a mix of NVIDIA and ATI cards and works properly. For the moment being, this feature is commented out due to changes in the core OSG libraries that have been done but need to be submitted later this week for approval by Robert.



Upcoming features



    * Support for moving windows from one screen to another screen seamlessly



    * Ability to set the window (i.e. the application itself creates the rendering window and passes it to the GraphicsWindowWin32 class)



    * Other miscellaneous items"

---------------------------------------------------
2007-01-24 10:02:04 +00:00

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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 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.
*
* This file is Copyright (C) 2007 - André Garneau (andre@pixdev.com) and licensed under OSGPL.
*
* Some elements of GraphicsWindowWin32 have used the Producer implementation as a reference.
* These elements are licensed under OSGPL as above, with Copyright (C) 2001-2004 Don Burns.
*/
#include <osgViewer/GraphicsWindowWin32>
#include <vector>
#include <map>
#include <sstream>
#include <windowsx.h>
using namespace osgViewer;
namespace osgViewer
{
//
// Defines from the WGL_ARB_pixel_format specification document
// See http://www.opengl.org/registry/specs/ARB/wgl_pixel_format.txt
//
#define WGL_NUMBER_PIXEL_FORMATS_ARB 0x2000
#define WGL_DRAW_TO_WINDOW_ARB 0x2001
#define WGL_DRAW_TO_BITMAP_ARB 0x2002
#define WGL_ACCELERATION_ARB 0x2003
#define WGL_NEED_PALETTE_ARB 0x2004
#define WGL_NEED_SYSTEM_PALETTE_ARB 0x2005
#define WGL_SWAP_LAYER_BUFFERS_ARB 0x2006
#define WGL_SWAP_METHOD_ARB 0x2007
#define WGL_NUMBER_OVERLAYS_ARB 0x2008
#define WGL_NUMBER_UNDERLAYS_ARB 0x2009
#define WGL_TRANSPARENT_ARB 0x200A
#define WGL_TRANSPARENT_RED_VALUE_ARB 0x2037
#define WGL_TRANSPARENT_GREEN_VALUE_ARB 0x2038
#define WGL_TRANSPARENT_BLUE_VALUE_ARB 0x2039
#define WGL_TRANSPARENT_ALPHA_VALUE_ARB 0x203A
#define WGL_TRANSPARENT_INDEX_VALUE_ARB 0x203B
#define WGL_SHARE_DEPTH_ARB 0x200C
#define WGL_SHARE_STENCIL_ARB 0x200D
#define WGL_SHARE_ACCUM_ARB 0x200E
#define WGL_SUPPORT_GDI_ARB 0x200F
#define WGL_SUPPORT_OPENGL_ARB 0x2010
#define WGL_DOUBLE_BUFFER_ARB 0x2011
#define WGL_STEREO_ARB 0x2012
#define WGL_PIXEL_TYPE_ARB 0x2013
#define WGL_COLOR_BITS_ARB 0x2014
#define WGL_RED_BITS_ARB 0x2015
#define WGL_RED_SHIFT_ARB 0x2016
#define WGL_GREEN_BITS_ARB 0x2017
#define WGL_GREEN_SHIFT_ARB 0x2018
#define WGL_BLUE_BITS_ARB 0x2019
#define WGL_BLUE_SHIFT_ARB 0x201A
#define WGL_ALPHA_BITS_ARB 0x201B
#define WGL_ALPHA_SHIFT_ARB 0x201C
#define WGL_ACCUM_BITS_ARB 0x201D
#define WGL_ACCUM_RED_BITS_ARB 0x201E
#define WGL_ACCUM_GREEN_BITS_ARB 0x201F
#define WGL_ACCUM_BLUE_BITS_ARB 0x2020
#define WGL_ACCUM_ALPHA_BITS_ARB 0x2021
#define WGL_DEPTH_BITS_ARB 0x2022
#define WGL_STENCIL_BITS_ARB 0x2023
#define WGL_AUX_BUFFERS_ARB 0x2024
#define WGL_NO_ACCELERATION_ARB 0x2025
#define WGL_GENERIC_ACCELERATION_ARB 0x2026
#define WGL_FULL_ACCELERATION_ARB 0x2027
#define WGL_SWAP_EXCHANGE_ARB 0x2028
#define WGL_SWAP_COPY_ARB 0x2029
#define WGL_SWAP_UNDEFINED_ARB 0x202A
#define WGL_TYPE_RGBA_ARB 0x202B
#define WGL_TYPE_COLORINDEX_ARB 0x202C
#define WGL_SAMPLE_BUFFERS_ARB 0x2041
#define WGL_SAMPLES_ARB 0x2042
//
// Entry points used from the WGL extensions
//
// BOOL wglChoosePixelFormatARB(HDC hdc,
// const int *piAttribIList,
// const FLOAT *pfAttribFList,
// UINT nMaxFormats,
// int *piFormats,
// UINT *nNumFormats);
//
typedef bool (WINAPI * WGLChoosePixelFormatARB) ( HDC, const int *, const float *, unsigned int, int *, unsigned int * );
//
// Utility class to specify the visual attributes for wglChoosePixelFormatARB() function
//
template <typename T> class WGLAttributes
{
public:
WGLAttributes() {}
~WGLAttributes() {}
void begin() { m_parameters.clear(); }
void set( const T& id, const T& value ) { add(id); add(value); }
void enable( const T& id ) { add(id); add(true); }
void disable( const T& id ) { add(id); add(false); }
void end() { add(0); }
const T* get() const { return &m_parameters.front(); }
protected:
void add( const T& t ) { m_parameters.push_back(t); }
std::vector<T> m_parameters; // parameters added
private:
// No implementation for these
WGLAttributes( const WGLAttributes& );
WGLAttributes& operator=( const WGLAttributes& );
};
typedef WGLAttributes<int> WGLIntegerAttributes;
typedef WGLAttributes<float> WGLFloatAttributes;
//
// Class responsible for interfacing with the Win32 Window Manager
// The behavior of this class is specific to OSG needs and is not a
// generic Windowing interface.
//
// NOTE: This class is intended to be used by a single-thread.
// Multi-threading is not enabled for performance reasons.
// The creation/deletion of graphics windows should be done
// by a single controller thread. That thread should then
// call the checkEvents() method of all created windows periodically.
// This is the case with OSG as a "main" thread does all
// setup, update & event processing. Rendering is done (optionally) by other threads.
//
// !@todo Have a dedicated thread managed by the Win32WindowingSystem class handle the
// creation and event message processing for all windows it manages. This
// is to relieve the "main" thread from having to do this synchronously
// during frame generation. The "main" thread would only have to process
// each osgGA-type window event queue.
//
class Win32WindowingSystem : public osg::GraphicsContext::WindowingSystemInterface
{
public:
// A class representing an OpenGL rendering context
class OpenGLContext
{
public:
OpenGLContext()
: _previousHdc(0),
_previousHglrc(0),
_hwnd(0),
_hdc(0),
_hglrc(0),
_restorePreviousOnExit(false)
{}
OpenGLContext( HWND hwnd, HDC hdc, HGLRC hglrc )
: _previousHdc(0),
_previousHglrc(0),
_hwnd(hwnd),
_hdc(hdc),
_hglrc(hglrc),
_restorePreviousOnExit(false)
{}
~OpenGLContext();
void set( HWND hwnd, HDC hdc, HGLRC hglrc )
{
_hwnd = hwnd;
_hdc = hdc;
_hglrc = hglrc;
}
HDC deviceContext() { return _hdc; }
bool makeCurrent( HDC restoreOnHdc, bool restorePreviousOnExit );
protected:
//
// Data members
//
HDC _previousHdc; // previously HDC to restore rendering context on
HGLRC _previousHglrc; // previously current rendering context
HWND _hwnd; // handle to OpenGL window
HDC _hdc; // handle to device context
HGLRC _hglrc; // handle to OpenGL rendering context
bool _restorePreviousOnExit; // restore original context on exit
private:
// no implementation for these
OpenGLContext( const OpenGLContext& );
OpenGLContext& operator=( const OpenGLContext& );
};
static std::string osgGraphicsWindowWithCursorClass; //!< Name of Win32 window class (with cursor) used by OSG graphics window instances
static std::string osgGraphicsWindowWithoutCursorClass; //!< Name of Win32 window class (without cursor) used by OSG graphics window instances
Win32WindowingSystem();
~Win32WindowingSystem();
// Access the Win32 windowing system through this singleton class.
static Win32WindowingSystem* getInterface()
{
static Win32WindowingSystem* win32Interface = new Win32WindowingSystem;
return win32Interface;
}
// Return the number of screens present in the system
virtual unsigned int getNumScreens( const osg::GraphicsContext::ScreenIdentifier& si );
// Return the resolution of specified screen
// (0,0) is returned if screen is unknown
virtual void getScreenResolution( const osg::GraphicsContext::ScreenIdentifier& si, unsigned int& width, unsigned int& height );
// Set the resolution for given screen
virtual bool setScreenResolution( const osg::GraphicsContext::ScreenIdentifier& si, unsigned int width, unsigned int height );
// Set the refresh rate for given screen
virtual bool setScreenRefreshRate( const osg::GraphicsContext::ScreenIdentifier& si, double refreshRate );
// Return the screen position and width/height.
// all zeros returned if screen is unknown
virtual void getScreenPosition( const osg::GraphicsContext::ScreenIdentifier& si, int& originX, int& originY, unsigned int& width, unsigned int& height );
// Create a graphics context with given traits
virtual osg::GraphicsContext* createGraphicsContext( osg::GraphicsContext::Traits* traits );
// Register a newly created native window along with its application counterpart
// This is required to maintain a link between Windows messages and the application window object
// at event processing time
virtual void registerWindow( HWND hwnd, osgViewer::GraphicsWindowWin32* window );
// Unregister a window
// This is called as part of a window being torn down
virtual void unregisterWindow( HWND hwnd );
// Get the application window object associated with a native window
virtual osgViewer::GraphicsWindowWin32* getGraphicsWindowFor( HWND hwnd );
// Return a valid sample OpenGL Device Context and current rendering context that can be used with wglXYZ extensions
virtual bool getSampleOpenGLContext( OpenGLContext& context, HDC windowHDC, int windowOriginX, int windowOriginY );
protected:
// Display devices present in the system
typedef std::vector<DISPLAY_DEVICE> DisplayDevices;
// Map Win32 window handles to GraphicsWindowWin32 instance
typedef std::pair< HWND, osgViewer::GraphicsWindowWin32* > WindowHandleEntry;
typedef std::map< HWND, osgViewer::GraphicsWindowWin32* > WindowHandles;
// Enumerate all display devices and return in passed container
void enumerateDisplayDevices( DisplayDevices& displayDevices ) const;
// Get the screen device current mode information
bool getScreenInformation( const osg::GraphicsContext::ScreenIdentifier& si, DISPLAY_DEVICE& displayDevice, DEVMODE& deviceMode );
// Change the screen settings (resolution, refresh rate, etc.)
bool changeScreenSettings( const osg::GraphicsContext::ScreenIdentifier& si, DISPLAY_DEVICE& displayDevice, DEVMODE& deviceMode );
// Register the window classes used by OSG graphics window instances
void registerWindowClasses();
// Unregister the window classes used by OSG graphics window instances
void unregisterWindowClasses();
// Data members
WindowHandles _activeWindows; //!< handles to active windows
bool _windowClassesRegistered; //!< true after window classes have been registered
private:
// No implementation for these
Win32WindowingSystem( const Win32WindowingSystem& );
Win32WindowingSystem& operator=( const Win32WindowingSystem& );
};
//
// This is the class we need to create for pbuffers and display devices that are not attached to the desktop
// (and thus cannot have windows created on their surface).
//
// Note its not a GraphicsWindow as it won't need any of the event handling and window mapping facilities.
//
class GraphicsContextWin32 : public osg::GraphicsContext
{
public:
GraphicsContextWin32(osg::GraphicsContext::Traits* traits);
~GraphicsContextWin32();
virtual bool valid() const;
/** Realise the GraphicsContext implementation,
* Pure virtual - must be implemented by concrate implementations of GraphicsContext. */
virtual bool realizeImplementation();
/** Return true if the graphics context has been realised, and is ready to use, implementation.
* Pure virtual - must be implemented by concrate implementations of GraphicsContext. */
virtual bool isRealizedImplementation() const;
/** Close the graphics context implementation.
* Pure virtual - must be implemented by concrate implementations of GraphicsContext. */
virtual void closeImplementation();
/** Make this graphics context current implementation.
* Pure virtual - must be implemented by concrate implementations of GraphicsContext. */
virtual bool makeCurrentImplementation();
/** Make this graphics context current with specified read context implementation.
* Pure virtual - must be implemented by concrate implementations of GraphicsContext. */
virtual bool makeContextCurrentImplementation(GraphicsContext* /*readContext*/);
/** Release the graphics context.*/
virtual bool releaseContextImplementation();
/** Pure virtual, Bind the graphics context to associated texture implementation.
* Pure virtual - must be implemented by concrate implementations of GraphicsContext. */
virtual void bindPBufferToTextureImplementation(GLenum /*buffer*/);
/** Swap the front and back buffers implementation.
* Pure virtual - must be implemented by Concrate implementations of GraphicsContext. */
virtual void swapBuffersImplementation();
protected:
bool _valid;
};
//////////////////////////////////////////////////////////////////////////////
// Error reporting
//////////////////////////////////////////////////////////////////////////////
static void reportError( const std::string& msg )
{
osg::notify(osg::WARN) << "Error: " << msg.c_str() << std::endl;
}
static void reportError( const std::string& msg, unsigned int errorCode )
{
//
// Some APIs are documented as returning the error in ::GetLastError but apparently do not
// Skip "Reason" field if the errorCode is still success
//
if (errorCode==0)
{
reportError(msg);
return;
}
osg::notify(osg::WARN) << "Windows Error #" << errorCode << ": " << msg.c_str();
LPVOID lpMsgBuf;
if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
errorCode,
0, // Default language
(LPTSTR) &lpMsgBuf,
0,
NULL)!=0)
{
osg::notify(osg::WARN) << ". Reason: " << LPTSTR(lpMsgBuf) << std::endl;
::LocalFree(lpMsgBuf);
}
else
{
osg::notify(osg::WARN) << std::endl;
}
}
static void reportErrorForScreen( const std::string& msg, const osg::GraphicsContext::ScreenIdentifier& si, unsigned int errorCode )
{
std::ostringstream str;
str << "[Screen #" << si.screenNum << "] " << msg;
reportError(str.str(), errorCode);
}
//////////////////////////////////////////////////////////////////////////////
// Keyboard key mapping for Win32
//////////////////////////////////////////////////////////////////////////////
class Win32KeyboardMap
{
public:
Win32KeyboardMap()
{
_keymap[VK_ESCAPE ] = osgGA::GUIEventAdapter::KEY_Escape;
_keymap[VK_F1 ] = osgGA::GUIEventAdapter::KEY_F1;
_keymap[VK_F2 ] = osgGA::GUIEventAdapter::KEY_F2;
_keymap[VK_F3 ] = osgGA::GUIEventAdapter::KEY_F3;
_keymap[VK_F4 ] = osgGA::GUIEventAdapter::KEY_F4;
_keymap[VK_F5 ] = osgGA::GUIEventAdapter::KEY_F5;
_keymap[VK_F6 ] = osgGA::GUIEventAdapter::KEY_F6;
_keymap[VK_F7 ] = osgGA::GUIEventAdapter::KEY_F7;
_keymap[VK_F8 ] = osgGA::GUIEventAdapter::KEY_F8;
_keymap[VK_F9 ] = osgGA::GUIEventAdapter::KEY_F9;
_keymap[VK_F10 ] = osgGA::GUIEventAdapter::KEY_F10;
_keymap[VK_F11 ] = osgGA::GUIEventAdapter::KEY_F11;
_keymap[VK_F12 ] = osgGA::GUIEventAdapter::KEY_F12;
_keymap[0xc0 ] = '`';
_keymap['0' ] = '0';
_keymap['1' ] = '1';
_keymap['2' ] = '2';
_keymap['3' ] = '3';
_keymap['4' ] = '4';
_keymap['5' ] = '5';
_keymap['6' ] = '6';
_keymap['7' ] = '7';
_keymap['8' ] = '8';
_keymap['9' ] = '9';
_keymap[0xbd ] = '-';
_keymap[0xbb ] = '=';
_keymap[VK_BACK ] = osgGA::GUIEventAdapter::KEY_BackSpace;
_keymap[VK_TAB ] = osgGA::GUIEventAdapter::KEY_Tab;
_keymap['A' ] = 'A';
_keymap['B' ] = 'B';
_keymap['C' ] = 'C';
_keymap['D' ] = 'D';
_keymap['E' ] = 'E';
_keymap['F' ] = 'F';
_keymap['G' ] = 'G';
_keymap['H' ] = 'H';
_keymap['I' ] = 'I';
_keymap['J' ] = 'J';
_keymap['K' ] = 'K';
_keymap['L' ] = 'L';
_keymap['M' ] = 'M';
_keymap['N' ] = 'N';
_keymap['O' ] = 'O';
_keymap['P' ] = 'P';
_keymap['Q' ] = 'Q';
_keymap['R' ] = 'R';
_keymap['S' ] = 'S';
_keymap['T' ] = 'T';
_keymap['U' ] = 'U';
_keymap['V' ] = 'V';
_keymap['W' ] = 'W';
_keymap['X' ] = 'X';
_keymap['Y' ] = 'Y';
_keymap['Z' ] = 'Z';
_keymap[0xdb ] = '[';
_keymap[0xdd ] = ']';
_keymap[0xdc ] = '\\';
_keymap[VK_CAPITAL ] = osgGA::GUIEventAdapter::KEY_Caps_Lock;
_keymap[0xba ] = ';';
_keymap[0xde ] = '\'';
_keymap[VK_RETURN ] = osgGA::GUIEventAdapter::KEY_Return;
_keymap[VK_LSHIFT ] = osgGA::GUIEventAdapter::KEY_Shift_L;
_keymap[0xbc ] = ',';
_keymap[0xbe ] = '.';
_keymap[0xbf ] = '/';
_keymap[VK_RSHIFT ] = osgGA::GUIEventAdapter::KEY_Shift_R;
_keymap[VK_LCONTROL ] = osgGA::GUIEventAdapter::KEY_Control_L;
_keymap[VK_LWIN ] = osgGA::GUIEventAdapter::KEY_Super_L;
_keymap[VK_SPACE ] = ' ';
_keymap[VK_LMENU ] = osgGA::GUIEventAdapter::KEY_Alt_L;
_keymap[VK_RMENU ] = osgGA::GUIEventAdapter::KEY_Alt_R;
_keymap[VK_RWIN ] = osgGA::GUIEventAdapter::KEY_Super_R;
_keymap[VK_APPS ] = osgGA::GUIEventAdapter::KEY_Menu;
_keymap[VK_RCONTROL ] = osgGA::GUIEventAdapter::KEY_Control_R;
_keymap[VK_SNAPSHOT ] = osgGA::GUIEventAdapter::KEY_Print;
_keymap[VK_SCROLL ] = osgGA::GUIEventAdapter::KEY_Scroll_Lock;
_keymap[VK_PAUSE ] = osgGA::GUIEventAdapter::KEY_Pause;
_keymap[VK_HOME ] = osgGA::GUIEventAdapter::KEY_Home;
_keymap[VK_PRIOR ] = osgGA::GUIEventAdapter::KEY_Page_Up;
_keymap[VK_END ] = osgGA::GUIEventAdapter::KEY_End;
_keymap[VK_NEXT ] = osgGA::GUIEventAdapter::KEY_Page_Down;
_keymap[VK_DELETE ] = osgGA::GUIEventAdapter::KEY_Delete;
_keymap[VK_INSERT ] = osgGA::GUIEventAdapter::KEY_Insert;
_keymap[VK_LEFT ] = osgGA::GUIEventAdapter::KEY_Left;
_keymap[VK_UP ] = osgGA::GUIEventAdapter::KEY_Up;
_keymap[VK_RIGHT ] = osgGA::GUIEventAdapter::KEY_Right;
_keymap[VK_DOWN ] = osgGA::GUIEventAdapter::KEY_Down;
_keymap[VK_NUMLOCK ] = osgGA::GUIEventAdapter::KEY_Num_Lock;
_keymap[VK_DIVIDE ] = osgGA::GUIEventAdapter::KEY_KP_Divide;
_keymap[VK_MULTIPLY ] = osgGA::GUIEventAdapter::KEY_KP_Multiply;
_keymap[VK_SUBTRACT ] = osgGA::GUIEventAdapter::KEY_KP_Subtract;
_keymap[VK_ADD ] = osgGA::GUIEventAdapter::KEY_KP_Add;
_keymap[VK_NUMPAD7 ] = osgGA::GUIEventAdapter::KEY_KP_Home;
_keymap[VK_NUMPAD8 ] = osgGA::GUIEventAdapter::KEY_KP_Up;
_keymap[VK_NUMPAD9 ] = osgGA::GUIEventAdapter::KEY_KP_Page_Up;
_keymap[VK_NUMPAD4 ] = osgGA::GUIEventAdapter::KEY_KP_Left;
_keymap[VK_NUMPAD5 ] = osgGA::GUIEventAdapter::KEY_KP_Begin;
_keymap[VK_NUMPAD6 ] = osgGA::GUIEventAdapter::KEY_KP_Right;
_keymap[VK_NUMPAD1 ] = osgGA::GUIEventAdapter::KEY_KP_End;
_keymap[VK_NUMPAD2 ] = osgGA::GUIEventAdapter::KEY_KP_Down;
_keymap[VK_NUMPAD3 ] = osgGA::GUIEventAdapter::KEY_KP_Page_Down;
_keymap[VK_NUMPAD0 ] = osgGA::GUIEventAdapter::KEY_KP_Insert;
_keymap[VK_DECIMAL ] = osgGA::GUIEventAdapter::KEY_KP_Delete;
}
~Win32KeyboardMap() {}
int remapKey(int key)
{
KeyMap::const_iterator map = _keymap.find(key);
return map==_keymap.end() ? key : map->second;
}
protected:
typedef std::map<int, int> KeyMap;
KeyMap _keymap;
};
static Win32KeyboardMap s_win32KeyboardMap;
static int remapWin32Key(int key)
{
return s_win32KeyboardMap.remapKey(key);
}
//////////////////////////////////////////////////////////////////////////////
// Window procedure for all GraphicsWindowWin32 instances
// Dispatches the call to the actual instance
//////////////////////////////////////////////////////////////////////////////
static LRESULT CALLBACK WindowProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
{
osgViewer::GraphicsWindowWin32* window = Win32WindowingSystem::getInterface()->getGraphicsWindowFor(hwnd);
return window ? window->handleNativeWindowingEvent(hwnd, uMsg, wParam, lParam) :
::DefWindowProc(hwnd, uMsg, wParam, lParam);
}
//////////////////////////////////////////////////////////////////////////////
// Win32WindowingSystem::OpenGLContext implementation
//////////////////////////////////////////////////////////////////////////////
Win32WindowingSystem::OpenGLContext::~OpenGLContext()
{
if (_restorePreviousOnExit && _previousHglrc!=_hglrc && !::wglMakeCurrent(_previousHdc, _previousHglrc))
{
reportError("Win32WindowingSystem::OpenGLContext() - Unable to restore current OpenGL rendering context", ::GetLastError());
}
_previousHdc = 0;
_previousHglrc = 0;
if (_hglrc)
{
::wglMakeCurrent(_hdc, NULL);
::wglDeleteContext(_hglrc);
_hglrc = 0;
}
if (_hdc)
{
::ReleaseDC(_hwnd, _hdc);
_hdc = 0;
}
if (_hwnd)
{
::DestroyWindow(_hwnd);
_hwnd = 0;
}
}
bool Win32WindowingSystem::OpenGLContext::makeCurrent( HDC restoreOnHdc, bool restorePreviousOnExit )
{
if (_hdc==0 || _hglrc==0) return false;
_previousHglrc = restorePreviousOnExit ? ::wglGetCurrentContext() : 0;
_previousHdc = restoreOnHdc;
if (_hglrc==_previousHglrc) return true;
if (!::wglMakeCurrent(_hdc, _hglrc))
{
reportError("Win32WindowingSystem::OpenGLContext() - Unable to set current OpenGL rendering context", ::GetLastError());
return false;
}
_restorePreviousOnExit = restorePreviousOnExit;
return true;
}
//////////////////////////////////////////////////////////////////////////////
// Win32WindowingSystem implementation
//////////////////////////////////////////////////////////////////////////////
std::string Win32WindowingSystem::osgGraphicsWindowWithCursorClass;
std::string Win32WindowingSystem::osgGraphicsWindowWithoutCursorClass;
Win32WindowingSystem::Win32WindowingSystem()
: _windowClassesRegistered(false)
{
}
Win32WindowingSystem::~Win32WindowingSystem()
{
unregisterWindowClasses();
}
void Win32WindowingSystem::enumerateDisplayDevices( DisplayDevices& displayDevices ) const
{
for (unsigned int deviceNum=0;; ++deviceNum)
{
DISPLAY_DEVICE displayDevice;
displayDevice.cb = sizeof(displayDevice);
if (!::EnumDisplayDevices(NULL, deviceNum, &displayDevice, 0)) break;
// Do not track devices used for remote access (Terminal Services pseudo-displays, etc.)
if (displayDevice.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER) continue;
// Only return display devices that are attached to the desktop
if (!(displayDevice.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP)) continue;
displayDevices.push_back(displayDevice);
}
}
void Win32WindowingSystem::registerWindowClasses()
{
if (_windowClassesRegistered) return;
//
// Register the window classes used by OSG GraphicsWindowWin32 instances
//
std::ostringstream str;
str << "OSG Graphics Window for Win32 [" << ::GetCurrentProcessId() << "]";
osgGraphicsWindowWithCursorClass = str.str() + "{ with cursor }";
osgGraphicsWindowWithoutCursorClass = str.str() + "{ without cursor }";
WNDCLASSEX wc;
HINSTANCE hinst = ::GetModuleHandle(NULL);
//
// First class: class for OSG Graphics Window with a cursor enabled
//
wc.cbSize = sizeof(wc);
wc.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
wc.lpfnWndProc = WindowProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hinst;
wc.hIcon = ::LoadIcon(hinst, "OSG_ICON");
wc.hCursor = ::LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = NULL;
wc.lpszMenuName = 0;
wc.lpszClassName = osgGraphicsWindowWithCursorClass.c_str();
wc.hIconSm = NULL;
if (::RegisterClassEx(&wc)==0)
{
unsigned int lastError = ::GetLastError();
if (lastError!=ERROR_CLASS_ALREADY_EXISTS)
{
reportError("Win32WindowingSystem::registerWindowClasses() - Unable to register first window class", lastError);
return;
}
}
//
// Second class: class for OSG Graphics Window without a cursor
//
wc.hCursor = NULL;
wc.lpszClassName = osgGraphicsWindowWithoutCursorClass.c_str();
if (::RegisterClassEx(&wc)==0)
{
unsigned int lastError = ::GetLastError();
if (lastError!=ERROR_CLASS_ALREADY_EXISTS)
{
reportError("Win32WindowingSystem::registerWindowClasses() - Unable to register second window class", lastError);
return;
}
}
_windowClassesRegistered = true;
}
void Win32WindowingSystem::unregisterWindowClasses()
{
if (_windowClassesRegistered)
{
::UnregisterClass(osgGraphicsWindowWithCursorClass.c_str(), ::GetModuleHandle(NULL));
::UnregisterClass(osgGraphicsWindowWithoutCursorClass.c_str(), ::GetModuleHandle(NULL));
_windowClassesRegistered = false;
}
}
bool Win32WindowingSystem::getSampleOpenGLContext( OpenGLContext& context, HDC windowHDC, int windowOriginX, int windowOriginY )
{
context.set(0, 0, 0);
registerWindowClasses();
HWND hwnd = ::CreateWindowEx(WS_EX_OVERLAPPEDWINDOW,
osgGraphicsWindowWithoutCursorClass.c_str(),
NULL,
WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_DISABLED,
windowOriginX,
windowOriginY,
1,
1,
NULL,
NULL,
::GetModuleHandle(NULL),
NULL);
if (hwnd==0)
{
reportError("Win32WindowingSystem::getSampleOpenGLContext() - Unable to create window", ::GetLastError());
return false;
}
//
// Set the pixel format of the window
//
PIXELFORMATDESCRIPTOR pixelFormat =
{
sizeof(PIXELFORMATDESCRIPTOR),
1,
PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL,
PFD_TYPE_RGBA,
24,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0,
24,
0,
0,
PFD_MAIN_PLANE,
0,
0, 0, 0
};
HDC hdc = ::GetDC(hwnd);
if (hdc==0)
{
reportError("Win32WindowingSystem::getSampleOpenGLContext() - Unable to get window device context", ::GetLastError());
::DestroyWindow(hwnd);
return false;
}
int pixelFormatIndex = ::ChoosePixelFormat(hdc, &pixelFormat);
if (pixelFormatIndex==0)
{
reportError("Win32WindowingSystem::getSampleOpenGLContext() - Unable to choose pixel format", ::GetLastError());
::ReleaseDC(hwnd, hdc);
::DestroyWindow(hwnd);
return false;
}
if (!::SetPixelFormat(hdc, pixelFormatIndex, &pixelFormat))
{
reportError("Win32WindowingSystem::getSampleOpenGLContext() - Unable to set pixel format", ::GetLastError());
::ReleaseDC(hwnd, hdc);
::DestroyWindow(hwnd);
return false;
}
HGLRC hglrc = ::wglCreateContext(hdc);
if (hglrc==0)
{
reportError("Win32WindowingSystem::getSampleOpenGLContext() - Unable to create an OpenGL rendering context", ::GetLastError());
::ReleaseDC(hwnd, hdc);
::DestroyWindow(hwnd);
return false;
}
context.set(hwnd, hdc, hglrc);
if (!context.makeCurrent(windowHDC, true)) return false;
return true;
}
unsigned int Win32WindowingSystem::getNumScreens( const osg::GraphicsContext::ScreenIdentifier& si )
{
return si.displayNum==0 ? ::GetSystemMetrics(SM_CMONITORS) : 0;
}
bool Win32WindowingSystem::getScreenInformation( const osg::GraphicsContext::ScreenIdentifier& si, DISPLAY_DEVICE& displayDevice, DEVMODE& deviceMode )
{
if (si.displayNum>0)
{
osg::notify(osg::WARN) << "Win32WindowingSystem::getScreenInformation() - The screen identifier on the Win32 platform must always use display number 0. Value received was " << si.displayNum << std::endl;
return false;
}
DisplayDevices displayDevices;
enumerateDisplayDevices(displayDevices);
if (si.screenNum>=displayDevices.size())
{
osg::notify(osg::WARN) << "Win32WindowingSystem::getScreenInformation() - Cannot get information for screen " << si.screenNum << " because it does not exist." << std::endl;
return false;
}
displayDevice = displayDevices[si.screenNum];
deviceMode.dmSize = sizeof(deviceMode);
deviceMode.dmDriverExtra = 0;
if (!::EnumDisplaySettings(displayDevice.DeviceName, ENUM_CURRENT_SETTINGS, &deviceMode))
{
std::ostringstream str;
str << "Win32WindowingSystem::getScreenInformation() - Unable to query information for screen number " << si.screenNum;
reportError(str.str(), ::GetLastError());
return false;
}
return true;
}
void Win32WindowingSystem::getScreenResolution( const osg::GraphicsContext::ScreenIdentifier& si, unsigned int& width, unsigned int& height )
{
DISPLAY_DEVICE displayDevice;
DEVMODE deviceMode;
if (getScreenInformation(si, displayDevice, deviceMode))
{
width = deviceMode.dmPelsWidth;
height = deviceMode.dmPelsHeight;
}
else
{
width = 0;
height = 0;
}
}
bool Win32WindowingSystem::changeScreenSettings( const osg::GraphicsContext::ScreenIdentifier& si, DISPLAY_DEVICE& displayDevice, DEVMODE& deviceMode )
{
//
// Start by testing if the change would be successful (without applying it)
//
unsigned int result = ::ChangeDisplaySettingsEx(displayDevice.DeviceName, &deviceMode, NULL, CDS_TEST, NULL);
if (result==DISP_CHANGE_SUCCESSFUL)
{
result = ::ChangeDisplaySettingsEx(displayDevice.DeviceName, &deviceMode, NULL, 0, NULL);
if (result==DISP_CHANGE_SUCCESSFUL) return true;
}
std::string msg = "Win32WindowingSystem::changeScreenSettings() - Unable to change the screen settings.";
switch( result )
{
case DISP_CHANGE_BADMODE : msg += " The specified graphics mode is not supported."; break;
case DISP_CHANGE_FAILED : msg += " The display driver failed the specified graphics mode."; break;
case DISP_CHANGE_RESTART : msg += " The computer must be restarted for the graphics mode to work."; break;
default : break;
}
reportErrorForScreen(msg, si, result);
return false;
}
bool Win32WindowingSystem::setScreenResolution( const osg::GraphicsContext::ScreenIdentifier& si, unsigned int width, unsigned int height )
{
DISPLAY_DEVICE displayDevice;
DEVMODE deviceMode;
if (!getScreenInformation(si, displayDevice, deviceMode)) return false;
deviceMode.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT;
deviceMode.dmPelsWidth = width;
deviceMode.dmPelsHeight = height;
return changeScreenSettings(si, displayDevice, deviceMode);
}
bool Win32WindowingSystem::setScreenRefreshRate( const osg::GraphicsContext::ScreenIdentifier& si, double refreshRate )
{
DISPLAY_DEVICE displayDevice;
DEVMODE deviceMode;
unsigned int width, height;
getScreenResolution(si, width, height);
if (!getScreenInformation(si, displayDevice, deviceMode)) return false;
deviceMode.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_DISPLAYFREQUENCY;
deviceMode.dmPelsWidth = width;
deviceMode.dmPelsHeight = height;
deviceMode.dmDisplayFrequency = refreshRate;
return changeScreenSettings(si, displayDevice, deviceMode);
}
void Win32WindowingSystem::getScreenPosition( const osg::GraphicsContext::ScreenIdentifier& si, int& originX, int& originY, unsigned int& width, unsigned int& height )
{
DISPLAY_DEVICE displayDevice;
DEVMODE deviceMode;
if (getScreenInformation(si, displayDevice, deviceMode))
{
originX = deviceMode.dmPosition.x;
originY = deviceMode.dmPosition.y;
width = deviceMode.dmPelsWidth;
height = deviceMode.dmPelsHeight;
}
else
{
originX = 0;
originY = 0;
width = 0;
height = 0;
}
}
osg::GraphicsContext* Win32WindowingSystem::createGraphicsContext( osg::GraphicsContext::Traits* traits )
{
if (traits->pbuffer)
{
osg::ref_ptr<osgViewer::GraphicsContextWin32> pbuffer = new GraphicsContextWin32(traits);
if (pbuffer->valid()) return pbuffer.release();
else return 0;
}
else
{
registerWindowClasses();
osg::ref_ptr<osgViewer::GraphicsWindowWin32> window = new GraphicsWindowWin32(traits);
if (window->valid()) return window.release();
else return 0;
}
}
void Win32WindowingSystem::registerWindow( HWND hwnd, osgViewer::GraphicsWindowWin32* window )
{
if (hwnd) _activeWindows.insert(WindowHandleEntry(hwnd, window));
}
//
// Unregister a window
// This is called as part of a window being torn down
//
void Win32WindowingSystem::unregisterWindow( HWND hwnd )
{
if (hwnd) _activeWindows.erase(hwnd);
}
//
// Get the application window object associated with a native window
//
osgViewer::GraphicsWindowWin32* Win32WindowingSystem::getGraphicsWindowFor( HWND hwnd )
{
WindowHandles::const_iterator entry = _activeWindows.find(hwnd);
return entry==_activeWindows.end() ? 0 : entry->second;
}
//////////////////////////////////////////////////////////////////////////////
// GraphicsWindowWin32 implementation
//////////////////////////////////////////////////////////////////////////////
GraphicsWindowWin32::GraphicsWindowWin32( osg::GraphicsContext::Traits* traits )
: _hwnd(0),
_hdc(0),
_hglrc(0),
_timeOfLastCheckEvents(-1.0),
_screenOriginX(0),
_screenOriginY(0),
_screenWidth(0),
_screenHeight(0),
_windowOriginXToRealize(0),
_windowOriginYToRealize(0),
_windowWidthToRealize(0),
_windowHeightToRealize(0),
_initialized(false),
_valid(false),
_realized(false),
_recreateWindow(false),
_destroying(false)
{
_traits = traits;
init();
if (valid())
{
setState( new osg::State );
getState()->setContextID( osg::GraphicsContext::createNewContextID() );
}
}
GraphicsWindowWin32::~GraphicsWindowWin32()
{
close();
destroyWindow();
}
void GraphicsWindowWin32::init()
{
if (!_initialized)
{
_initialized = createWindow() != 0;
_valid = _initialized;
}
}
HWND GraphicsWindowWin32::createWindow()
{
unsigned int extendedStyle;
unsigned int windowStyle;
if (!determineWindowPositionAndStyle(_traits->windowDecoration,
_windowOriginXToRealize,
_windowOriginYToRealize,
_windowWidthToRealize,
_windowHeightToRealize,
windowStyle,
extendedStyle))
{
reportError("GraphicsWindowWin32::createWindow() - Unable to determine the window position and style");
return 0;
}
_hwnd = ::CreateWindowEx(extendedStyle,
_traits->useCursor ? Win32WindowingSystem::osgGraphicsWindowWithCursorClass.c_str() :
Win32WindowingSystem::osgGraphicsWindowWithoutCursorClass.c_str(),
_traits->windowName.c_str(),
windowStyle,
_windowOriginXToRealize,
_windowOriginYToRealize,
_windowWidthToRealize,
_windowHeightToRealize,
NULL,
NULL,
::GetModuleHandle(NULL),
NULL);
if (_hwnd==0)
{
reportErrorForScreen("GraphicsWindowWin32::createWindow() - Unable to create window", _traits->screenNum, ::GetLastError());
return 0;
}
_hdc = ::GetDC(_hwnd);
if (_hdc==0)
{
reportErrorForScreen("GraphicsWindowWin32::createWindow() - Unable to get window device context", _traits->screenNum, ::GetLastError());
destroyWindow();
_hwnd = 0;
return 0;
}
//
// Set the pixel format according to traits specified
//
if (!setPixelFormat())
{
::ReleaseDC(_hwnd, _hdc);
_hdc = 0;
destroyWindow();
return 0;
}
Win32WindowingSystem::getInterface()->registerWindow(_hwnd, this);
return _hwnd;
}
void GraphicsWindowWin32::destroyWindow( bool deleteNativeWindow )
{
if (_destroying) return;
_destroying = true;
if (_hdc)
{
releaseContext();
if (_hglrc)
{
::wglDeleteContext(_hglrc);
_hglrc = 0;
}
::ReleaseDC(_hwnd, _hdc);
_hdc = 0;
}
if (_hwnd)
{
Win32WindowingSystem::getInterface()->unregisterWindow(_hwnd);
if (deleteNativeWindow) ::DestroyWindow(_hwnd);
_hwnd = 0;
}
_initialized = false;
_realized = false;
_valid = false;
_destroying = false;
}
void GraphicsWindowWin32::recreateWindow()
{
#ifdef NEXT_RELEASE_ONLY
_recreateWindow = false;
Win32WindowingSystem::getInterface()->unregisterWindow(_hwnd);
//
// Delete the original window after now one to prevent window "flashing" on screen
//
HWND hwnd = _hwnd;
_hwnd = 0; // pretend native window has already been destroyed
close(true, false);
init();
realize();
::DestroyWindow(hwnd); // destroy native window
#endif
}
bool GraphicsWindowWin32::determineWindowPositionAndStyle( bool decorated, int& x, int& y, unsigned int& w, unsigned int& h, unsigned int& style, unsigned int& extendedStyle )
{
if (_traits==0) return false;
//
// Query the screen position and size
//
osg::GraphicsContext::ScreenIdentifier screenId(_traits->screenNum);
Win32WindowingSystem* windowManager = Win32WindowingSystem::getInterface();
windowManager->getScreenPosition(screenId, _screenOriginX, _screenOriginY, _screenWidth, _screenHeight);
if (_screenWidth==0 || _screenHeight==0) return false;
x = _traits->x + _screenOriginX;
y = _traits->y + _screenOriginY;
w = _traits->width;
h = _traits->height;
style = WS_POPUP | WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
extendedStyle = 0;
if (decorated)
{
style |= WS_CAPTION |
WS_SYSMENU |
WS_MINIMIZEBOX |
WS_MAXIMIZEBOX;
if (_traits->supportsResize) style |= WS_SIZEBOX;
extendedStyle = WS_EX_APPWINDOW |
WS_EX_OVERLAPPEDWINDOW |
WS_EX_ACCEPTFILES |
WS_EX_LTRREADING;
RECT corners;
corners.left = x;
corners.top = y;
corners.right = x + w - 1;
corners.bottom = y + h - 1;
//
// Determine the location of the window corners in order to have
// a client area of the requested size
//
if (!::AdjustWindowRectEx(&corners, style, FALSE, extendedStyle))
{
reportErrorForScreen("GraphicsWindowWin32::determineWindowPositionAndStyle() - Unable to adjust window rectangle", _traits->screenNum, ::GetLastError());
return false;
}
x = corners.left;
y = corners.top;
w = corners.right - corners.left + 1;
h = corners.bottom - corners.top + 1;
}
return true;
}
static void PreparePixelFormatSpecifications( const osg::GraphicsContext::Traits& traits,
WGLIntegerAttributes& attributes,
bool allowSwapExchangeARB )
{
attributes.begin();
attributes.enable(WGL_DRAW_TO_WINDOW_ARB);
attributes.enable(WGL_SUPPORT_OPENGL_ARB);
attributes.set(WGL_ACCELERATION_ARB, WGL_FULL_ACCELERATION_ARB);
attributes.set(WGL_PIXEL_TYPE_ARB, WGL_TYPE_RGBA_ARB);
attributes.set(WGL_COLOR_BITS_ARB, traits.red + traits.green + traits.blue);
attributes.set(WGL_RED_BITS_ARB, traits.red);
attributes.set(WGL_GREEN_BITS_ARB, traits.green);
attributes.set(WGL_BLUE_BITS_ARB, traits.blue);
attributes.set(WGL_DEPTH_BITS_ARB, traits.depth);
if (traits.doubleBuffer)
{
attributes.enable(WGL_DOUBLE_BUFFER_ARB);
if (allowSwapExchangeARB) attributes.set(WGL_SWAP_METHOD_ARB, WGL_SWAP_EXCHANGE_ARB);
}
if (traits.alpha) attributes.set(WGL_ALPHA_BITS_ARB, traits.alpha);
if (traits.stencil) attributes.set(WGL_STENCIL_BITS_ARB, traits.stencil);
if (traits.sampleBuffers) attributes.set(WGL_SAMPLE_BUFFERS_ARB, traits.sampleBuffers);
if (traits.samples) attributes.set(WGL_SAMPLES_ARB, traits.samples);
if (traits.quadBufferStereo) attributes.enable(WGL_STEREO_ARB);
attributes.end();
}
static int ChooseMatchingPixelFormat( HDC hdc, int screenNum, const WGLIntegerAttributes& formatSpecifications )
{
//
// Access the entry point for the wglChoosePixelFormatARB function
//
WGLChoosePixelFormatARB wglChoosePixelFormatARB = (WGLChoosePixelFormatARB)wglGetProcAddress("wglChoosePixelFormatARB");
if (wglChoosePixelFormatARB==0)
{
reportErrorForScreen("ChooseMatchingPixelFormat() - wglChoosePixelFormatARB extension not found", screenNum, ::GetLastError());
return -1;
}
int pixelFormatIndex = 0;
unsigned int numMatchingPixelFormats = 0;
if (!wglChoosePixelFormatARB(hdc,
formatSpecifications.get(),
NULL,
1,
&pixelFormatIndex,
&numMatchingPixelFormats))
{
reportErrorForScreen("ChooseMatchingPixelFormat() - Unable to choose the requested pixel format", screenNum, ::GetLastError());
return -1;
}
return numMatchingPixelFormats==0 ? -1 : pixelFormatIndex;
}
bool GraphicsWindowWin32::setPixelFormat()
{
Win32WindowingSystem::OpenGLContext openGLContext;
if (!Win32WindowingSystem::getInterface()->getSampleOpenGLContext(openGLContext, _hdc, _screenOriginX, _screenOriginY)) return false;
//
// Build the specifications of the requested pixel format
//
WGLIntegerAttributes formatSpecs;
::PreparePixelFormatSpecifications(*_traits, formatSpecs, true);
//
// Choose the closest matching pixel format from the specified traits
//
int pixelFormatIndex = ::ChooseMatchingPixelFormat(openGLContext.deviceContext(), _traits->screenNum, formatSpecs);
if (pixelFormatIndex<0)
{
::PreparePixelFormatSpecifications(*_traits, formatSpecs, false);
pixelFormatIndex = ::ChooseMatchingPixelFormat(openGLContext.deviceContext(), _traits->screenNum, formatSpecs);
if (pixelFormatIndex<0)
{
reportErrorForScreen("GraphicsWindowWin32::setPixelFormat() - No matching pixel format found based on traits specified", _traits->screenNum, 0);
return false;
}
osg::notify(osg::WARN) << "GraphicsWindowWin32::setPixelFormat() - Found a matching pixel format but without the WGL_SWAP_METHOD_ARB specification for screen #"
<< _traits->screenNum
<< std::endl;
}
//
// Set the pixel format found
//
PIXELFORMATDESCRIPTOR pfd;
::memset(&pfd, 0, sizeof(pfd));
pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
pfd.nVersion = 1;
if (!::SetPixelFormat(_hdc, pixelFormatIndex, &pfd))
{
reportErrorForScreen("GraphicsWindowWin32::setPixelFormat() - Unable to set pixel format", _traits->screenNum, ::GetLastError());
return false;
}
//
// Create the OpenGL rendering context associated with this window
//
_hglrc = ::wglCreateContext(_hdc);
if (_hglrc==0)
{
reportErrorForScreen("GraphicsWindowWin32::setPixelFormat() - Unable to create OpenGL rendering context", _traits->screenNum, ::GetLastError());
return false;
}
return true;
}
void GraphicsWindowWin32::setWindowDecoration( bool decorated )
{
unsigned int windowStyle;
unsigned int extendedStyle;
//
// Determine position and size of window with/without decorations to retain the size specified in traits
//
int x, y;
unsigned int w, h;
if (!determineWindowPositionAndStyle(decorated, x, y, w, h, windowStyle, extendedStyle))
{
reportErrorForScreen("GraphicsWindowWin32::setWindowDecoration() - Unable to determine the window position and style", _traits->screenNum, 0);
return;
}
//
// Change the window style
//
::SetLastError(0);
unsigned int result = ::SetWindowLong(_hwnd, GWL_STYLE, windowStyle);
unsigned int error = ::GetLastError();
if (result==0 && error)
{
reportErrorForScreen("GraphicsWindowWin32::setWindowDecoration() - Unable to set window style", _traits->screenNum, error);
return;
}
//
// Change the window extended style
//
::SetLastError(0);
result = ::SetWindowLong(_hwnd, GWL_EXSTYLE, extendedStyle);
error = ::GetLastError();
if (result==0 && error)
{
reportErrorForScreen("GraphicsWindowWin32::setWindowDecoration() - Unable to set window extented style", _traits->screenNum, error);
return;
}
//
// Change the window position and size and realize the style changes
//
if (!::SetWindowPos(_hwnd, HWND_TOP, x, y, w, h, SWP_FRAMECHANGED | SWP_NOZORDER | SWP_SHOWWINDOW))
{
reportErrorForScreen("GraphicsWindowWin32::setWindowDecoration() - Unable to set new window position and size", _traits->screenNum, ::GetLastError());
return;
}
//
// Repaint the desktop to cleanup decorations removed
//
if (!decorated)
{
::InvalidateRect(NULL, NULL, TRUE);
}
}
bool GraphicsWindowWin32::realizeImplementation()
{
if (_realized) return true;
if (!_initialized)
{
init();
if (!_initialized) return false;
}
//
// Bring the window on top of other ones (including the taskbar if it covers it completely)
//
// NOTE: To cover the taskbar with a window that does not completely cover it, the HWND_TOPMOST
// Z-order must be used in the code below instead of HWND_TOP.
// @todo: This should be controlled through a flag in the traits (topMostWindow)
//
if (!::SetWindowPos(_hwnd,
HWND_TOP,
_windowOriginXToRealize,
_windowOriginYToRealize,
_windowWidthToRealize,
_windowHeightToRealize,
SWP_SHOWWINDOW))
{
reportErrorForScreen("GraphicsWindowWin32::realizeImplementation() - Unable to show window", _traits->screenNum, ::GetLastError());
return false;
}
if (!::UpdateWindow(_hwnd))
{
reportErrorForScreen("GraphicsWindowWin32::realizeImplementation() - Unable to update window", _traits->screenNum, ::GetLastError());
return false;
}
_realized = true;
return true;
}
bool GraphicsWindowWin32::makeCurrentImplementation()
{
if (!_realized)
{
reportErrorForScreen("GraphicsWindowWin32::makeCurrentImplementation() - Window not realized; cannot do makeCurrent.", _traits->screenNum, 0);
return false;
}
if (!::wglMakeCurrent(_hdc, _hglrc))
{
reportErrorForScreen("GraphicsWindowWin32::makeCurrentImplementation() - Unable to set current OpenGL rendering context", _traits->screenNum, ::GetLastError());
return false;
}
return true;
}
bool GraphicsWindowWin32::releaseContextImplementation()
{
if (!::wglMakeCurrent(_hdc, NULL))
{
reportErrorForScreen("GraphicsWindowWin32::releaseContextImplementation() - Unable to release current OpenGL rendering context", _traits->screenNum, ::GetLastError());
return false;
}
return true;
}
void GraphicsWindowWin32::closeImplementation()
{
destroyWindow();
_initialized = false;
_valid = false;
_realized = false;
}
void GraphicsWindowWin32::swapBuffersImplementation()
{
if (!_realized) return;
if (!::SwapBuffers(_hdc))
{
reportErrorForScreen("GraphicsWindowWin32::swapBuffersImplementation() - Unable to swap display buffers", _traits->screenNum, ::GetLastError());
}
}
void GraphicsWindowWin32::checkEvents()
{
if (!_realized) return;
MSG msg;
while (::PeekMessage(&msg, _hwnd, NULL, NULL, PM_REMOVE))
{
::TranslateMessage(&msg);
::DispatchMessage(&msg);
}
if (_recreateWindow) recreateWindow();
}
void GraphicsWindowWin32::grabFocus()
{
if (!::SetForegroundWindow(_hwnd))
{
osg::notify(osg::WARN) << "Warning: GraphicsWindowWin32::grabFocus() - Failed grabbing the focus" << std::endl;
}
}
void GraphicsWindowWin32::grabFocusIfPointerInWindow()
{
POINT mousePos;
if (!::GetCursorPos(&mousePos))
{
reportErrorForScreen("GraphicsWindowWin32::grabFocusIfPointerInWindow() - Unable to get cursor position", _traits->screenNum, ::GetLastError());
return;
}
RECT windowRect;
if (!::GetWindowRect(_hwnd, &windowRect))
{
reportErrorForScreen("GraphicsWindowWin32::grabFocusIfPointerInWindow() - Unable to get window position", _traits->screenNum, ::GetLastError());
return;
}
if (mousePos.x>=windowRect.left && mousePos.x<=windowRect.right &&
mousePos.y>=windowRect.top && mousePos.y<=windowRect.bottom)
{
grabFocus();
}
}
void GraphicsWindowWin32::requestWarpPointer( float x, float y )
{
if (!_realized)
{
reportErrorForScreen("GraphicsWindowWin32::requestWarpPointer() - Window not realized; cannot warp pointer", _traits->screenNum, 0);
return;
}
RECT windowRect;
if (!::GetWindowRect(_hwnd, &windowRect))
{
reportErrorForScreen("GraphicsWindowWin32::requestWarpPointer() - Unable to get window rectangle", _traits->screenNum, ::GetLastError());
return;
}
if (!::SetCursorPos(windowRect.left + x, windowRect.top + y))
{
reportErrorForScreen("GraphicsWindowWin32::requestWarpPointer() - Unable to set cursor position", _traits->screenNum, ::GetLastError());
return;
}
getEventQueue()->mouseWarped(x,y);
}
void GraphicsWindowWin32::useCursor( bool cursorOn )
{
_traits->useCursor = cursorOn;
}
void GraphicsWindowWin32::adaptKey( WPARAM wParam, LPARAM lParam, int& keySymbol, unsigned int& modifierMask )
{
modifierMask = 0;
BYTE keyState[256];
if (!::GetKeyboardState(keyState))
{
keySymbol = 0;
return;
}
bool rightSide = (lParam & 0x01000000)!=0;
if (keyState[VK_SHIFT] & 0x80)
{
modifierMask |= osgGA::GUIEventAdapter::MODKEY_SHIFT;
modifierMask |= rightSide ? osgGA::GUIEventAdapter::MODKEY_RIGHT_SHIFT : osgGA::GUIEventAdapter::MODKEY_LEFT_SHIFT;
}
if (keyState[VK_CAPITAL] & 0x01) modifierMask |= osgGA::GUIEventAdapter::MODKEY_CAPS_LOCK;
if (keyState[VK_NUMLOCK] & 0x01) modifierMask |= osgGA::GUIEventAdapter::MODKEY_NUM_LOCK;
if (keyState[VK_CONTROL] & 0x80)
{
modifierMask |= osgGA::GUIEventAdapter::MODKEY_CTRL;
modifierMask |= rightSide ? osgGA::GUIEventAdapter::MODKEY_RIGHT_CTRL : osgGA::GUIEventAdapter::MODKEY_LEFT_CTRL;
}
if (lParam & 0x20000000)
{
modifierMask |= osgGA::GUIEventAdapter::MODKEY_LEFT_ALT;
modifierMask |= rightSide ? osgGA::GUIEventAdapter::MODKEY_RIGHT_ALT : osgGA::GUIEventAdapter::MODKEY_LEFT_ALT;
}
keySymbol = remapWin32Key(wParam);
if (keySymbol==osgGA::GUIEventAdapter::KEY_Return && rightSide)
{
keySymbol = osgGA::GUIEventAdapter::KEY_KP_Enter;
}
else if ((keySymbol & 0xff00)==0)
{
char asciiKey[2];
int numChars = ::ToAscii(wParam, (lParam>>16)&0xff, keyState, reinterpret_cast<WORD*>(asciiKey), 0);
if (numChars>0) keySymbol = asciiKey[0];
}
}
void GraphicsWindowWin32::transformMouseXY( float& x, float& y )
{
if (getEventQueue()->getUseFixedMouseInputRange())
{
osgGA::GUIEventAdapter* eventState = getEventQueue()->getCurrentEventState();
x = eventState->getXmin() + (eventState->getXmax()-eventState->getXmin())*x/float(_traits->width);
y = eventState->getYmin() + (eventState->getYmax()-eventState->getYmin())*y/float(_traits->height);
}
}
int GraphicsWindowWin32::getScreenNumberContainingWindow( int& _screenOriginX, int& _screenOriginY )
{
RECT clientArea;
clientArea.left = _traits->x + _screenOriginX;
clientArea.top = _traits->y + _screenOriginY;
clientArea.right = _traits->x + _screenOriginX + _traits->width - 1;
clientArea.bottom = _traits->y + _screenOriginY + _traits->height - 1;
HMONITOR hMonitor = ::MonitorFromRect(&clientArea, MONITOR_DEFAULTTONULL);
if (hMonitor==NULL) return _traits->screenNum;
MONITORINFO monitorInfo;
monitorInfo.cbSize = sizeof(monitorInfo);
if (!::GetMonitorInfo(hMonitor, &monitorInfo))
{
reportErrorForScreen("GraphicsWindowWin32::getScreenNumberContainingWindow() - Unable to get monitor information", _traits->screenNum, ::GetLastError());
return _traits->screenNum;
}
Win32WindowingSystem* windowManager = Win32WindowingSystem::getInterface();
for (int screenNum=windowManager->getNumScreens(osg::GraphicsContext::ScreenIdentifier())-1; screenNum>=0; --screenNum)
{
int x, y;
unsigned w, h;
windowManager->getScreenPosition(osg::GraphicsContext::ScreenIdentifier(screenNum), x, y, w, h);
if (x==monitorInfo.rcWork.left && y==monitorInfo.rcWork.top)
{
_screenOriginX = x;
_screenOriginY = y;
return screenNum;
}
}
return _traits->screenNum;
}
LRESULT GraphicsWindowWin32::handleNativeWindowingEvent( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
{
//!@todo adapt windows event time to osgGA event queue time for better resolution
double baseTime = _timeOfLastCheckEvents;
double eventTime = _timeOfLastCheckEvents;
double resizeTime = eventTime;
_timeOfLastCheckEvents = getEventQueue()->getTime();
switch(uMsg)
{
/////////////////
case WM_PAINT :
/////////////////
{
PAINTSTRUCT paint;
::BeginPaint(hwnd, &paint);
::EndPaint(hwnd, &paint);
}
break;
///////////////////
case WM_MOUSEMOVE :
///////////////////
{
float mx = GET_X_LPARAM(lParam);
float my = GET_Y_LPARAM(lParam);
transformMouseXY(mx, my);
getEventQueue()->mouseMotion(mx, my, eventTime);
}
break;
/////////////////////
case WM_LBUTTONDOWN :
case WM_MBUTTONDOWN :
case WM_RBUTTONDOWN :
/////////////////////
{
::SetCapture(hwnd);
int button;
if (uMsg==WM_LBUTTONDOWN) button = 1;
else if (uMsg==WM_MBUTTONDOWN) button = 2;
else button = 3;
float mx = GET_X_LPARAM(lParam);
float my = GET_Y_LPARAM(lParam);
transformMouseXY(mx, my);
getEventQueue()->mouseButtonPress(mx, my, button, eventTime);
}
break;
/////////////////////
case WM_LBUTTONUP :
case WM_MBUTTONUP :
case WM_RBUTTONUP :
/////////////////////
{
::ReleaseCapture();
int button;
if (uMsg==WM_LBUTTONUP) button = 1;
else if (uMsg==WM_MBUTTONUP) button = 2;
else button = 3;
float mx = GET_X_LPARAM(lParam);
float my = GET_Y_LPARAM(lParam);
transformMouseXY(mx, my);
getEventQueue()->mouseButtonRelease(mx, my, button, eventTime);
}
break;
////////////////////
case WM_MOUSEWHEEL :
////////////////////
getEventQueue()->mouseScroll(GET_WHEEL_DELTA_WPARAM(wParam)<0 ? osgGA::GUIEventAdapter::SCROLL_DOWN :
osgGA::GUIEventAdapter::SCROLL_UP,
eventTime);
break;
/////////////////
case WM_MOVE :
case WM_SIZE :
/////////////////
{
POINT origin;
origin.x = 0;
origin.y = 0;
::ClientToScreen(hwnd, &origin);
int windowX = origin.x - _screenOriginX;
int windowY = origin.y - _screenOriginY;
resizeTime = eventTime;
RECT clientRect;
::GetClientRect(hwnd, &clientRect);
int windowWidth;
int windowHeight;
if (clientRect.bottom==0 && clientRect.right==0)
{
//
// Window has been minimized; keep window width & height to a minimum of 1 pixel
//
windowWidth = 1;
windowHeight = 1;
}
else
{
windowWidth = clientRect.right;
windowHeight = clientRect.bottom;
}
if (windowX!=_traits->x || windowY!=_traits->y || windowWidth!=_traits->width || windowHeight!=_traits->height)
{
resized(windowX, windowY, windowWidth, windowHeight);
getEventQueue()->windowResize(windowX, windowY, windowWidth, windowHeight, resizeTime);
}
}
break;
#ifdef NEXT_RELEASE_ONLY
//////////////////////
case WM_EXITSIZEMOVE :
//////////////////////
{
int vx = _traits->x + _screenOriginX;
int vy = _traits->y + _screenOriginY;
int screenNum = getScreenNumberContainingWindow(_screenOriginX, _screenOriginY);
if (screenNum!=_traits->screenNum)
{
_recreateWindow = true;
_traits->screenNum = screenNum;
int x = vx - _screenOriginX;
int y = vy - _screenOriginY;
resized(x, y, _traits->width, _traits->height);
getEventQueue()->windowResize(x, y, _traits->width, _traits->height, _timeOfLastCheckEvents);
}
}
break;
#endif
////////////////////
case WM_KEYDOWN :
case WM_SYSKEYDOWN :
////////////////////
{
int keySymbol = 0;
unsigned int modifierMask = 0;
adaptKey(wParam, lParam, keySymbol, modifierMask);
getEventQueue()->keyPress(keySymbol, eventTime);
getEventQueue()->getCurrentEventState()->setModKeyMask(modifierMask);
}
break;
//////////////////
case WM_KEYUP :
case WM_SYSKEYUP :
//////////////////
{
int keySymbol = 0;
unsigned int modifierMask = 0;
adaptKey(wParam, lParam, keySymbol, modifierMask);
getEventQueue()->keyRelease(keySymbol, eventTime);
getEventQueue()->getCurrentEventState()->setModKeyMask(modifierMask);
}
break;
///////////////////
case WM_SETCURSOR :
///////////////////
if (_traits->useCursor) return ::DefWindowProc(hwnd, uMsg, wParam, lParam);
::SetCursor(NULL);
return TRUE;
/////////////////
case WM_CLOSE :
/////////////////
::DestroyWindow(hwnd);
break;
/////////////////
case WM_DESTROY :
/////////////////
destroyWindow(false);
getEventQueue()->closeWindow(eventTime);
::PostQuitMessage(0);
break;
//////////////
case WM_QUIT :
//////////////
close();
return wParam;
/////////////////
default :
/////////////////
return ::DefWindowProc(hwnd, uMsg, wParam, lParam);
}
return 0;
}
//////////////////////////////////////////////////////////////////////////////
// GraphicsContextWin32 implementation
//////////////////////////////////////////////////////////////////////////////
GraphicsContextWin32::GraphicsContextWin32( osg::GraphicsContext::Traits* traits )
: _valid(false)
{
_traits = traits;
}
GraphicsContextWin32::~GraphicsContextWin32()
{
}
bool GraphicsContextWin32::valid() const
{
return _valid;
}
bool GraphicsContextWin32::realizeImplementation()
{
osg::notify(osg::NOTICE) << "GraphicsContextWin32::realizeImplementation() not implemented." << std::endl; return false;
}
bool GraphicsContextWin32::isRealizedImplementation() const
{
osg::notify(osg::NOTICE) << "GraphicsContextWin32::isRealizedImplementation() not implemented." << std::endl; return false;
}
void GraphicsContextWin32::closeImplementation()
{
osg::notify(osg::NOTICE) << "GraphicsContextWin32::closeImplementation() not implemented." << std::endl;
}
bool GraphicsContextWin32::makeCurrentImplementation()
{
osg::notify(osg::NOTICE) << "GraphicsContextWin32::makeCurrentImplementation() not implemented." << std::endl;
return false;
}
bool GraphicsContextWin32::makeContextCurrentImplementation( GraphicsContext* /*readContext*/ )
{
osg::notify(osg::NOTICE) << "GraphicsContextWin32::makeContextCurrentImplementation(..) not implemented." << std::endl;
return false;
}
bool GraphicsContextWin32::releaseContextImplementation()
{
osg::notify(osg::NOTICE) << "GraphicsContextWin32::releaseContextImplementation(..) not implemented." << std::endl;
return false;
}
void GraphicsContextWin32::bindPBufferToTextureImplementation( GLenum /*buffer*/ )
{
osg::notify(osg::NOTICE) << "GraphicsContextWin32::void bindPBufferToTextureImplementation(..) not implemented." << std::endl;
}
void GraphicsContextWin32::swapBuffersImplementation()
{
osg::notify(osg::NOTICE) << "GraphicsContextWin32:: swapBuffersImplementation() not implemented." << std::endl;
}
//////////////////////////////////////////////////////////////////////////////
// Class responsible for registering the Win32 Windowing System interface
//////////////////////////////////////////////////////////////////////////////
struct RegisterWindowingSystemInterfaceProxy
{
RegisterWindowingSystemInterfaceProxy()
{
osg::GraphicsContext::setWindowingSystemInterface(Win32WindowingSystem::getInterface());
}
~RegisterWindowingSystemInterfaceProxy()
{
osg::GraphicsContext::setWindowingSystemInterface(0);
}
};
static RegisterWindowingSystemInterfaceProxy createWindowingSystemInterfaceProxy;
}; // namespace OsgViewer
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