X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2FCommon%2Ffreeglut_state.c;h=84e2ccdbc24a026c310085d4466c046db5a8d402;hb=e86b0a2f785267775a158a32da02779544960e6e;hp=06681eb938a7b1b2510cba4c55417d42248a2174;hpb=814beaa77f437cf4cf6cac9f748235488f6478a1;p=freeglut diff --git a/src/Common/freeglut_state.c b/src/Common/freeglut_state.c index 06681eb..84e2ccd 100644 --- a/src/Common/freeglut_state.c +++ b/src/Common/freeglut_state.c @@ -1,687 +1,346 @@ -/* - * freeglut_state.c - * - * Freeglut state query methods. - * - * Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved. - * Written by Pawel W. Olszta, - * Creation date: Thu Dec 16 1999 - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER - * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - -#include -#include "freeglut_internal.h" - -/* - * TODO BEFORE THE STABLE RELEASE: - * - * glutGet() -- X11 tests passed, but check if all enums - * handled (what about Win32?) - * glutDeviceGet() -- X11 tests passed, but check if all enums - * handled (what about Win32?) - * glutGetModifiers() -- OK, but could also remove the limitation - * glutLayerGet() -- what about GLUT_NORMAL_DAMAGED? - * - * The fail-on-call policy will help adding the most needed things imho. - */ - -extern int fgPlatformGlutGet ( GLenum eWhat ); -extern int fgPlatformGlutDeviceGet ( GLenum eWhat ); -extern int fgPlatformGlutLayerGet ( GLenum eWhat ); - -/* A helper function to check if a display mode is possible to use */ -#if TARGET_HOST_POSIX_X11 -GLXFBConfig* fgChooseFBConfig( int* numcfgs ); -#endif - - -/* -- LOCAL DEFINITIONS ---------------------------------------------------- */ - -/* -- PRIVATE FUNCTIONS ---------------------------------------------------- */ - -#if TARGET_HOST_POSIX_X11 -/* - * Queries the GL context about some attributes - */ -static int fghGetConfig( int attribute ) -{ - int returnValue = 0; - int result; /* Not checked */ - - if( fgStructure.CurrentWindow ) - result = glXGetFBConfigAttrib( fgDisplay.pDisplay.Display, - *(fgStructure.CurrentWindow->Window.pContext.FBConfig), - attribute, - &returnValue ); - - return returnValue; -} - -int fgPlatformGlutGet ( GLenum eWhat ) -{ - int nsamples = 0; - - switch( eWhat ) - { - /* - * The window/context specific queries are handled mostly by - * fghGetConfig(). - */ - case GLUT_WINDOW_NUM_SAMPLES: -#ifdef GLX_VERSION_1_3 - glGetIntegerv(GL_SAMPLES, &nsamples); -#endif - return nsamples; - - /* - * The rest of GLX queries under X are general enough to use a macro to - * check them - */ -# define GLX_QUERY(a,b) case a: return fghGetConfig( b ); - - GLX_QUERY( GLUT_WINDOW_RGBA, GLX_RGBA ); - GLX_QUERY( GLUT_WINDOW_DOUBLEBUFFER, GLX_DOUBLEBUFFER ); - GLX_QUERY( GLUT_WINDOW_BUFFER_SIZE, GLX_BUFFER_SIZE ); - GLX_QUERY( GLUT_WINDOW_STENCIL_SIZE, GLX_STENCIL_SIZE ); - GLX_QUERY( GLUT_WINDOW_DEPTH_SIZE, GLX_DEPTH_SIZE ); - GLX_QUERY( GLUT_WINDOW_RED_SIZE, GLX_RED_SIZE ); - GLX_QUERY( GLUT_WINDOW_GREEN_SIZE, GLX_GREEN_SIZE ); - GLX_QUERY( GLUT_WINDOW_BLUE_SIZE, GLX_BLUE_SIZE ); - GLX_QUERY( GLUT_WINDOW_ALPHA_SIZE, GLX_ALPHA_SIZE ); - GLX_QUERY( GLUT_WINDOW_ACCUM_RED_SIZE, GLX_ACCUM_RED_SIZE ); - GLX_QUERY( GLUT_WINDOW_ACCUM_GREEN_SIZE, GLX_ACCUM_GREEN_SIZE ); - GLX_QUERY( GLUT_WINDOW_ACCUM_BLUE_SIZE, GLX_ACCUM_BLUE_SIZE ); - GLX_QUERY( GLUT_WINDOW_ACCUM_ALPHA_SIZE, GLX_ACCUM_ALPHA_SIZE ); - GLX_QUERY( GLUT_WINDOW_STEREO, GLX_STEREO ); - -# undef GLX_QUERY - - /* Colormap size is handled in a bit different way than all the rest */ - case GLUT_WINDOW_COLORMAP_SIZE: - if( (fghGetConfig( GLX_RGBA )) || (fgStructure.CurrentWindow == NULL) ) - { - /* - * We've got a RGBA visual, so there is no colormap at all. - * The other possibility is that we have no current window set. - */ - return 0; - } - else - { - const GLXFBConfig * fbconfig = - fgStructure.CurrentWindow->Window.pContext.FBConfig; - - XVisualInfo * visualInfo = - glXGetVisualFromFBConfig( fgDisplay.pDisplay.Display, *fbconfig ); - - const int result = visualInfo->visual->map_entries; - - XFree(visualInfo); - - return result; - } - - /* - * Those calls are somewhat similiar, as they use XGetWindowAttributes() - * function - */ - case GLUT_WINDOW_X: - case GLUT_WINDOW_Y: - case GLUT_WINDOW_BORDER_WIDTH: - case GLUT_WINDOW_HEADER_HEIGHT: - { - int x, y; - Window w; - - if( fgStructure.CurrentWindow == NULL ) - return 0; - - XTranslateCoordinates( - fgDisplay.pDisplay.Display, - fgStructure.CurrentWindow->Window.Handle, - fgDisplay.pDisplay.RootWindow, - 0, 0, &x, &y, &w); - - switch ( eWhat ) - { - case GLUT_WINDOW_X: return x; - case GLUT_WINDOW_Y: return y; - } - - if ( w == 0 ) - return 0; - XTranslateCoordinates( - fgDisplay.pDisplay.Display, - fgStructure.CurrentWindow->Window.Handle, - w, 0, 0, &x, &y, &w); - - switch ( eWhat ) - { - case GLUT_WINDOW_BORDER_WIDTH: return x; - case GLUT_WINDOW_HEADER_HEIGHT: return y; - } - } - - case GLUT_WINDOW_WIDTH: - case GLUT_WINDOW_HEIGHT: - { - XWindowAttributes winAttributes; - - if( fgStructure.CurrentWindow == NULL ) - return 0; - XGetWindowAttributes( - fgDisplay.pDisplay.Display, - fgStructure.CurrentWindow->Window.Handle, - &winAttributes - ); - switch ( eWhat ) - { - case GLUT_WINDOW_WIDTH: return winAttributes.width ; - case GLUT_WINDOW_HEIGHT: return winAttributes.height ; - } - } - - /* I do not know yet if there will be a fgChooseVisual() function for Win32 */ - case GLUT_DISPLAY_MODE_POSSIBLE: - { - /* We should not have to call fgChooseFBConfig again here. */ - GLXFBConfig * fbconfig; - int isPossible; - - fbconfig = fgChooseFBConfig(NULL); - - if (fbconfig == NULL) - { - isPossible = 0; - } - else - { - isPossible = 1; - XFree(fbconfig); - } - - return isPossible; - } - - /* This is system-dependant */ - case GLUT_WINDOW_FORMAT_ID: - if( fgStructure.CurrentWindow == NULL ) - return 0; - - return fghGetConfig( GLX_VISUAL_ID ); - - default: - fgWarning( "glutGet(): missing enum handle %d", eWhat ); - break; - } -} - - -int fgPlatformGlutDeviceGet ( GLenum eWhat ) -{ - switch( eWhat ) - { - case GLUT_HAS_KEYBOARD: - /* - * X11 has a core keyboard by definition, although it can - * be present as a virtual/dummy keyboard. For now, there - * is no reliable way to tell if a real keyboard is present. - */ - return 1; - - /* X11 has a mouse by definition */ - case GLUT_HAS_MOUSE: - return 1 ; - - case GLUT_NUM_MOUSE_BUTTONS: - /* We should be able to pass NULL when the last argument is zero, - * but at least one X server has a bug where this causes a segfault. - * - * In XFree86/Xorg servers, a mouse wheel is seen as two buttons - * rather than an Axis; "freeglut_main.c" expects this when - * checking for a wheel event. - */ - { - unsigned char map; - int nbuttons = XGetPointerMapping(fgDisplay.pDisplay.Display, &map,0); - return nbuttons; - } - - default: - fgWarning( "glutDeviceGet(): missing enum handle %d", eWhat ); - break; - } - - /* And now -- the failure. */ - return -1; -} - -int fgPlatformGlutLayerGet( GLenum eWhat ) -{ - /* - * This is easy as layers are not implemented ;-) - * - * XXX Can we merge the UNIX/X11 and WIN32 sections? Or - * XXX is overlay support planned? - */ - switch( eWhat ) - { - case GLUT_OVERLAY_POSSIBLE: - return 0; - - case GLUT_LAYER_IN_USE: - return GLUT_NORMAL; - - case GLUT_HAS_OVERLAY: - return 0; - - case GLUT_TRANSPARENT_INDEX: - /* - * Return just anything, which is always defined as zero - * - * XXX HUH? - */ - return 0; - - case GLUT_NORMAL_DAMAGED: - /* XXX Actually I do not know. Maybe. */ - return 0; - - case GLUT_OVERLAY_DAMAGED: - return -1; - - default: - fgWarning( "glutLayerGet(): missing enum handle %d", eWhat ); - break; - } - - /* And fail. That's good. Programs do love failing. */ - return -1; -} - - - -#endif - -/* -- INTERFACE FUNCTIONS -------------------------------------------------- */ - -/* - * General settings assignment method - */ -void FGAPIENTRY glutSetOption( GLenum eWhat, int value ) -{ - FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSetOption" ); - - /* - * XXX In chronological code add order. (WHY in that order?) - */ - switch( eWhat ) - { - case GLUT_INIT_WINDOW_X: - fgState.Position.X = (GLint)value; - break; - - case GLUT_INIT_WINDOW_Y: - fgState.Position.Y = (GLint)value; - break; - - case GLUT_INIT_WINDOW_WIDTH: - fgState.Size.X = (GLint)value; - break; - - case GLUT_INIT_WINDOW_HEIGHT: - fgState.Size.Y = (GLint)value; - break; - - case GLUT_INIT_DISPLAY_MODE: - fgState.DisplayMode = (unsigned int)value; - break; - - case GLUT_ACTION_ON_WINDOW_CLOSE: - fgState.ActionOnWindowClose = value; - break; - - case GLUT_RENDERING_CONTEXT: - fgState.UseCurrentContext = - ( value == GLUT_USE_CURRENT_CONTEXT ) ? GL_TRUE : GL_FALSE; - break; - - case GLUT_DIRECT_RENDERING: - fgState.DirectContext = value; - break; - - case GLUT_WINDOW_CURSOR: - if( fgStructure.CurrentWindow != NULL ) - fgStructure.CurrentWindow->State.Cursor = value; - break; - - case GLUT_AUX: - fgState.AuxiliaryBufferNumber = value; - break; - - case GLUT_MULTISAMPLE: - fgState.SampleNumber = value; - break; - - default: - fgWarning( "glutSetOption(): missing enum handle %d", eWhat ); - break; - } -} - -/* - * General settings query method - */ -int FGAPIENTRY glutGet( GLenum eWhat ) -{ - switch (eWhat) - { - case GLUT_INIT_STATE: - return fgState.Initialised; - - case GLUT_ELAPSED_TIME: - return fgElapsedTime(); - } - - FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutGet" ); - - /* XXX In chronological code add order. (WHY in that order?) */ - switch( eWhat ) - { - /* Following values are stored in fgState and fgDisplay global structures */ - case GLUT_SCREEN_WIDTH: return fgDisplay.ScreenWidth ; - case GLUT_SCREEN_HEIGHT: return fgDisplay.ScreenHeight ; - case GLUT_SCREEN_WIDTH_MM: return fgDisplay.ScreenWidthMM ; - case GLUT_SCREEN_HEIGHT_MM: return fgDisplay.ScreenHeightMM; - case GLUT_INIT_WINDOW_X: return fgState.Position.Use ? - fgState.Position.X : -1 ; - case GLUT_INIT_WINDOW_Y: return fgState.Position.Use ? - fgState.Position.Y : -1 ; - case GLUT_INIT_WINDOW_WIDTH: return fgState.Size.Use ? - fgState.Size.X : -1 ; - case GLUT_INIT_WINDOW_HEIGHT: return fgState.Size.Use ? - fgState.Size.Y : -1 ; - case GLUT_INIT_DISPLAY_MODE: return fgState.DisplayMode ; - case GLUT_INIT_MAJOR_VERSION: return fgState.MajorVersion ; - case GLUT_INIT_MINOR_VERSION: return fgState.MinorVersion ; - case GLUT_INIT_FLAGS: return fgState.ContextFlags ; - case GLUT_INIT_PROFILE: return fgState.ContextProfile ; - - /* The window structure queries */ - case GLUT_WINDOW_PARENT: - if( fgStructure.CurrentWindow == NULL ) return 0; - if( fgStructure.CurrentWindow->Parent == NULL ) return 0; - return fgStructure.CurrentWindow->Parent->ID; - - case GLUT_WINDOW_NUM_CHILDREN: - if( fgStructure.CurrentWindow == NULL ) - return 0; - return fgListLength( &fgStructure.CurrentWindow->Children ); - - case GLUT_WINDOW_CURSOR: - if( fgStructure.CurrentWindow == NULL ) - return 0; - return fgStructure.CurrentWindow->State.Cursor; - - case GLUT_MENU_NUM_ITEMS: - if( fgStructure.CurrentMenu == NULL ) - return 0; - return fgListLength( &fgStructure.CurrentMenu->Entries ); - - case GLUT_ACTION_ON_WINDOW_CLOSE: - return fgState.ActionOnWindowClose; - - case GLUT_VERSION : - return VERSION_MAJOR * 10000 + VERSION_MINOR * 100 + VERSION_PATCH; - - case GLUT_RENDERING_CONTEXT: - return fgState.UseCurrentContext ? GLUT_USE_CURRENT_CONTEXT - : GLUT_CREATE_NEW_CONTEXT; - - case GLUT_DIRECT_RENDERING: - return fgState.DirectContext; - - case GLUT_FULL_SCREEN: - return fgStructure.CurrentWindow->State.IsFullscreen; - - case GLUT_AUX: - return fgState.AuxiliaryBufferNumber; - - case GLUT_MULTISAMPLE: - return fgState.SampleNumber; - - default: - return fgPlatformGlutGet ( eWhat ); - break; - } - return -1; -} - -/* - * Returns various device information. - */ -int FGAPIENTRY glutDeviceGet( GLenum eWhat ) -{ - FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutDeviceGet" ); - - /* XXX WARNING: we are mostly lying in this function. */ - switch( eWhat ) - { - case GLUT_HAS_JOYSTICK: - return fgJoystickDetect (); - - case GLUT_OWNS_JOYSTICK: - return fgState.JoysticksInitialised; - - case GLUT_JOYSTICK_POLL_RATE: - return fgStructure.CurrentWindow ? fgStructure.CurrentWindow->State.JoystickPollRate : 0; - - /* XXX The following two are only for Joystick 0 but this is an improvement */ - case GLUT_JOYSTICK_BUTTONS: - return glutJoystickGetNumButtons ( 0 ); - - case GLUT_JOYSTICK_AXES: - return glutJoystickGetNumAxes ( 0 ); - - case GLUT_HAS_DIAL_AND_BUTTON_BOX: - return fgInputDeviceDetect (); - - case GLUT_NUM_DIALS: - if ( fgState.InputDevsInitialised ) return 8; - return 0; - - case GLUT_NUM_BUTTON_BOX_BUTTONS: - return 0; - - case GLUT_HAS_SPACEBALL: - return fgHasSpaceball(); - - case GLUT_HAS_TABLET: - return 0; - - case GLUT_NUM_SPACEBALL_BUTTONS: - return fgSpaceballNumButtons(); - - case GLUT_NUM_TABLET_BUTTONS: - return 0; - - case GLUT_DEVICE_IGNORE_KEY_REPEAT: - return fgStructure.CurrentWindow ? fgStructure.CurrentWindow->State.IgnoreKeyRepeat : 0; - - case GLUT_DEVICE_KEY_REPEAT: - return fgState.KeyRepeat; - - default: - return fgPlatformGlutDeviceGet ( eWhat ); - } - - /* And now -- the failure. */ - return -1; -} - -/* - * This should return the current state of ALT, SHIFT and CTRL keys. - */ -int FGAPIENTRY glutGetModifiers( void ) -{ - FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutGetModifiers" ); - if( fgState.Modifiers == INVALID_MODIFIERS ) - { - fgWarning( "glutGetModifiers() called outside an input callback" ); - return 0; - } - - return fgState.Modifiers; -} - -/* - * Return the state of the GLUT API overlay subsystem. A misery ;-) - */ -int FGAPIENTRY glutLayerGet( GLenum eWhat ) -{ - FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutLayerGet" ); - - /* - * This is easy as layers are not implemented ;-) - * - * XXX Can we merge the UNIX/X11 and WIN32 sections? Or - * XXX is overlay support planned? - */ - switch( eWhat ) - { - - default: - return fgPlatformGlutLayerGet( eWhat ); - } - - /* And fail. That's good. Programs do love failing. */ - return -1; -} - -int * FGAPIENTRY glutGetModeValues(GLenum eWhat, int * size) -{ - int * array; - -#if TARGET_HOST_POSIX_X11 - int attributes[9]; - GLXFBConfig * fbconfigArray; /* Array of FBConfigs */ - int fbconfigArraySize; /* Number of FBConfigs in the array */ - int attribute_name = 0; -#endif - - FREEGLUT_EXIT_IF_NOT_INITIALISED("glutGetModeValues"); - - array = NULL; - *size = 0; - - switch (eWhat) - { -#if TARGET_HOST_POSIX_X11 - case GLUT_AUX: - case GLUT_MULTISAMPLE: - - attributes[0] = GLX_BUFFER_SIZE; - attributes[1] = GLX_DONT_CARE; - - switch (eWhat) - { - case GLUT_AUX: - /* - FBConfigs are now sorted by increasing number of auxiliary - buffers. We want at least one buffer. - */ - attributes[2] = GLX_AUX_BUFFERS; - attributes[3] = 1; - attributes[4] = None; - - attribute_name = GLX_AUX_BUFFERS; - - break; - - - case GLUT_MULTISAMPLE: - attributes[2] = GLX_AUX_BUFFERS; - attributes[3] = GLX_DONT_CARE; - attributes[4] = GLX_SAMPLE_BUFFERS; - attributes[5] = 1; - /* - FBConfigs are now sorted by increasing number of samples per - pixel. We want at least one sample. - */ - attributes[6] = GLX_SAMPLES; - attributes[7] = 1; - attributes[8] = None; - - attribute_name = GLX_SAMPLES; - - break; - } - - fbconfigArray = glXChooseFBConfig(fgDisplay.pDisplay.Display, - fgDisplay.pDisplay.Screen, - attributes, - &fbconfigArraySize); - - if (fbconfigArray != NULL) - { - int * temp_array; - int result; /* Returned by glXGetFBConfigAttrib. Not checked. */ - int previous_value; - int i; - - temp_array = malloc(sizeof(int) * fbconfigArraySize); - previous_value = 0; - - for (i = 0; i < fbconfigArraySize; i++) - { - int value; - - result = glXGetFBConfigAttrib(fgDisplay.pDisplay.Display, - fbconfigArray[i], - attribute_name, - &value); - if (value > previous_value) - { - temp_array[*size] = value; - previous_value = value; - (*size)++; - } - } - - array = malloc(sizeof(int) * (*size)); - for (i = 0; i < *size; i++) - { - array[i] = temp_array[i]; - } - - free(temp_array); - XFree(fbconfigArray); - } - - break; -#endif - - default: - break; - } - - return array; -} - -/*** END OF FILE ***/ +/* + * freeglut_state.c + * + * Freeglut state query methods. + * + * Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved. + * Written by Pawel W. Olszta, + * Creation date: Thu Dec 16 1999 + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER + * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#include +#include "freeglut_internal.h" + +/* + * TODO BEFORE THE STABLE RELEASE: + * + * glutGet() -- X11 tests passed, but check if all enums + * handled (what about Win32?) + * glutDeviceGet() -- X11 tests passed, but check if all enums + * handled (what about Win32?) + * glutGetModifiers() -- OK, but could also remove the limitation + * glutLayerGet() -- what about GLUT_NORMAL_DAMAGED? + * + * The fail-on-call policy will help adding the most needed things imho. + */ + +extern int fgPlatformGlutGet ( GLenum eWhat ); +extern int fgPlatformGlutDeviceGet ( GLenum eWhat ); +extern int *fgPlatformGlutGetModeValues(GLenum eWhat, int *size); + + +/* -- LOCAL DEFINITIONS ---------------------------------------------------- */ + +/* -- PRIVATE FUNCTIONS ---------------------------------------------------- */ + + +/* -- INTERFACE FUNCTIONS -------------------------------------------------- */ + +/* + * General settings assignment method + */ +void FGAPIENTRY glutSetOption( GLenum eWhat, int value ) +{ + FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSetOption" ); + + /* + * XXX In chronological code add order. (WHY in that order?) + */ + switch( eWhat ) + { + case GLUT_INIT_WINDOW_X: + fgState.Position.X = (GLint)value; + break; + + case GLUT_INIT_WINDOW_Y: + fgState.Position.Y = (GLint)value; + break; + + case GLUT_INIT_WINDOW_WIDTH: + fgState.Size.X = (GLint)value; + break; + + case GLUT_INIT_WINDOW_HEIGHT: + fgState.Size.Y = (GLint)value; + break; + + case GLUT_INIT_DISPLAY_MODE: + fgState.DisplayMode = (unsigned int)value; + break; + + case GLUT_ACTION_ON_WINDOW_CLOSE: + fgState.ActionOnWindowClose = value; + break; + + case GLUT_RENDERING_CONTEXT: + fgState.UseCurrentContext = + ( value == GLUT_USE_CURRENT_CONTEXT ) ? GL_TRUE : GL_FALSE; + break; + + case GLUT_DIRECT_RENDERING: + fgState.DirectContext = value; + break; + + case GLUT_WINDOW_CURSOR: + if( fgStructure.CurrentWindow != NULL ) + fgStructure.CurrentWindow->State.Cursor = value; + break; + + case GLUT_AUX: + fgState.AuxiliaryBufferNumber = value; + break; + + case GLUT_MULTISAMPLE: + fgState.SampleNumber = value; + break; + + default: + fgWarning( "glutSetOption(): missing enum handle %d", eWhat ); + break; + } +} + +/* + * General settings query method + */ +int FGAPIENTRY glutGet( GLenum eWhat ) +{ + switch (eWhat) + { + case GLUT_INIT_STATE: + return fgState.Initialised; + + case GLUT_ELAPSED_TIME: + return fgElapsedTime(); + } + + FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutGet" ); + + /* XXX In chronological code add order. (WHY in that order?) */ + switch( eWhat ) + { + /* Following values are stored in fgState and fgDisplay global structures */ + case GLUT_SCREEN_WIDTH: return fgDisplay.ScreenWidth ; + case GLUT_SCREEN_HEIGHT: return fgDisplay.ScreenHeight ; + case GLUT_SCREEN_WIDTH_MM: return fgDisplay.ScreenWidthMM ; + case GLUT_SCREEN_HEIGHT_MM: return fgDisplay.ScreenHeightMM; + case GLUT_INIT_WINDOW_X: return fgState.Position.Use ? + fgState.Position.X : -1 ; + case GLUT_INIT_WINDOW_Y: return fgState.Position.Use ? + fgState.Position.Y : -1 ; + case GLUT_INIT_WINDOW_WIDTH: return fgState.Size.Use ? + fgState.Size.X : -1 ; + case GLUT_INIT_WINDOW_HEIGHT: return fgState.Size.Use ? + fgState.Size.Y : -1 ; + case GLUT_INIT_DISPLAY_MODE: return fgState.DisplayMode ; + case GLUT_INIT_MAJOR_VERSION: return fgState.MajorVersion ; + case GLUT_INIT_MINOR_VERSION: return fgState.MinorVersion ; + case GLUT_INIT_FLAGS: return fgState.ContextFlags ; + case GLUT_INIT_PROFILE: return fgState.ContextProfile ; + + /* The window structure queries */ + case GLUT_WINDOW_PARENT: + if( fgStructure.CurrentWindow == NULL ) return 0; + if( fgStructure.CurrentWindow->Parent == NULL ) return 0; + return fgStructure.CurrentWindow->Parent->ID; + + case GLUT_WINDOW_NUM_CHILDREN: + if( fgStructure.CurrentWindow == NULL ) + return 0; + return fgListLength( &fgStructure.CurrentWindow->Children ); + + case GLUT_WINDOW_CURSOR: + if( fgStructure.CurrentWindow == NULL ) + return 0; + return fgStructure.CurrentWindow->State.Cursor; + + case GLUT_MENU_NUM_ITEMS: + if( fgStructure.CurrentMenu == NULL ) + return 0; + return fgListLength( &fgStructure.CurrentMenu->Entries ); + + case GLUT_ACTION_ON_WINDOW_CLOSE: + return fgState.ActionOnWindowClose; + + case GLUT_VERSION : + return VERSION_MAJOR * 10000 + VERSION_MINOR * 100 + VERSION_PATCH; + + case GLUT_RENDERING_CONTEXT: + return fgState.UseCurrentContext ? GLUT_USE_CURRENT_CONTEXT + : GLUT_CREATE_NEW_CONTEXT; + + case GLUT_DIRECT_RENDERING: + return fgState.DirectContext; + + case GLUT_FULL_SCREEN: + return fgStructure.CurrentWindow->State.IsFullscreen; + + case GLUT_AUX: + return fgState.AuxiliaryBufferNumber; + + case GLUT_MULTISAMPLE: + return fgState.SampleNumber; + + default: + return fgPlatformGlutGet ( eWhat ); + break; + } + return -1; +} + +/* + * Returns various device information. + */ +int FGAPIENTRY glutDeviceGet( GLenum eWhat ) +{ + FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutDeviceGet" ); + + /* XXX WARNING: we are mostly lying in this function. */ + switch( eWhat ) + { + case GLUT_HAS_JOYSTICK: + return fgJoystickDetect (); + + case GLUT_OWNS_JOYSTICK: + return fgState.JoysticksInitialised; + + case GLUT_JOYSTICK_POLL_RATE: + return fgStructure.CurrentWindow ? fgStructure.CurrentWindow->State.JoystickPollRate : 0; + + /* XXX The following two are only for Joystick 0 but this is an improvement */ + case GLUT_JOYSTICK_BUTTONS: + return glutJoystickGetNumButtons ( 0 ); + + case GLUT_JOYSTICK_AXES: + return glutJoystickGetNumAxes ( 0 ); + + case GLUT_HAS_DIAL_AND_BUTTON_BOX: + return fgInputDeviceDetect (); + + case GLUT_NUM_DIALS: + if ( fgState.InputDevsInitialised ) return 8; + return 0; + + case GLUT_NUM_BUTTON_BOX_BUTTONS: + return 0; + + case GLUT_HAS_SPACEBALL: + return fgHasSpaceball(); + + case GLUT_HAS_TABLET: + return 0; + + case GLUT_NUM_SPACEBALL_BUTTONS: + return fgSpaceballNumButtons(); + + case GLUT_NUM_TABLET_BUTTONS: + return 0; + + case GLUT_DEVICE_IGNORE_KEY_REPEAT: + return fgStructure.CurrentWindow ? fgStructure.CurrentWindow->State.IgnoreKeyRepeat : 0; + + case GLUT_DEVICE_KEY_REPEAT: + return fgState.KeyRepeat; + + default: + return fgPlatformGlutDeviceGet ( eWhat ); + } + + /* And now -- the failure. */ + return -1; +} + +/* + * This should return the current state of ALT, SHIFT and CTRL keys. + */ +int FGAPIENTRY glutGetModifiers( void ) +{ + FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutGetModifiers" ); + if( fgState.Modifiers == INVALID_MODIFIERS ) + { + fgWarning( "glutGetModifiers() called outside an input callback" ); + return 0; + } + + return fgState.Modifiers; +} + +/* + * Return the state of the GLUT API overlay subsystem. A misery ;-) + */ +int FGAPIENTRY glutLayerGet( GLenum eWhat ) +{ + FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutLayerGet" ); + + /* + * This is easy as layers are not implemented and + * overlay support is not planned. E.g. on Windows, + * overlay requests in PFDs are ignored + * (see iLayerType at http://msdn.microsoft.com/en-us/library/dd368826(v=vs.85).aspx) + */ + switch( eWhat ) + { + + case GLUT_OVERLAY_POSSIBLE: + return 0 ; + + case GLUT_LAYER_IN_USE: + return GLUT_NORMAL; + + case GLUT_HAS_OVERLAY: + return 0; + + case GLUT_TRANSPARENT_INDEX: + /* + * Return just anything, which is always defined as zero + * + * XXX HUH? + */ + return 0; + + case GLUT_NORMAL_DAMAGED: + /* XXX Actually I do not know. Maybe. */ + return 0; + + case GLUT_OVERLAY_DAMAGED: + return -1; + + default: + fgWarning( "glutLayerGet(): missing enum handle %d", eWhat ); + break; + } + + /* And fail. That's good. Programs do love failing. */ + return -1; +} + +int * FGAPIENTRY glutGetModeValues(GLenum eWhat, int *size) +{ + int *array; + + FREEGLUT_EXIT_IF_NOT_INITIALISED("glutGetModeValues"); + + *size = 0; + array = fgPlatformGlutGetModeValues ( eWhat, size ); + + return array; +} + +/*** END OF FILE ***/