X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Fx11%2Ffreeglut_init_x11.c;h=3010943c28114732c4e9288dffb6e0bad5411fb4;hb=c5b343fbd61bdd4946f2e076e9f37223975a66ee;hp=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391;hpb=23115ad49ced2f295f719e8cea6acad802402cdb;p=freeglut diff --git a/src/x11/freeglut_init_x11.c b/src/x11/freeglut_init_x11.c index e69de29..3010943 100644 --- a/src/x11/freeglut_init_x11.c +++ b/src/x11/freeglut_init_x11.c @@ -0,0 +1,273 @@ +/* + * freeglut_init_x11.c + * + * Various freeglut initialization functions. + * + * Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved. + * Written by Pawel W. Olszta, + * Copied for Platform code by Evan Felix + * Creation date: Thur Feb 2 2012 + * + * 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. + */ + +#define FREEGLUT_BUILDING_LIB +#include /* LONG_MAX */ +#include +#include "../Common/freeglut_internal.h" + +/* Return the atom associated with "name". */ +static Atom fghGetAtom(const char * name) +{ + return XInternAtom(fgDisplay.pDisplay.Display, name, False); +} + +/* + * Check if "property" is set on "window". The property's values are returned + * through "data". If the property is set and is of type "type", return the + * number of elements in "data". Return zero otherwise. In both cases, use + * "Xfree()" to free "data". + */ +static int fghGetWindowProperty(Window window, + Atom property, + Atom type, + unsigned char ** data) +{ + /* + * Caller always has to use "Xfree()" to free "data", since + * "XGetWindowProperty() always allocates one extra byte in prop_return + * [i.e. "data"] (even if the property is zero length) [..]". + */ + + int status; /* Returned by "XGetWindowProperty". */ + + Atom type_returned; + int temp_format; /* Not used. */ + unsigned long number_of_elements; + unsigned long temp_bytes_after; /* Not used. */ + + + status = XGetWindowProperty(fgDisplay.pDisplay.Display, + window, + property, + 0, + LONG_MAX, + False, + type, + &type_returned, + &temp_format, + &number_of_elements, + &temp_bytes_after, + data); + + FREEGLUT_INTERNAL_ERROR_EXIT(status == Success, + "XGetWindowProperty failled", + "fghGetWindowProperty"); + + if (type_returned != type) + { + number_of_elements = 0; + } + + return number_of_elements; +} + +/* Check if the window manager is NET WM compliant. */ +static int fghNetWMSupported(void) +{ + Atom wm_check; + Window ** window_ptr_1; + + int number_of_windows; + int net_wm_supported; + + + net_wm_supported = 0; + + wm_check = fghGetAtom("_NET_SUPPORTING_WM_CHECK"); + window_ptr_1 = malloc(sizeof(Window *)); + + /* + * Check that the window manager has set this property on the root window. + * The property must be the ID of a child window. + */ + number_of_windows = fghGetWindowProperty(fgDisplay.pDisplay.RootWindow, + wm_check, + XA_WINDOW, + (unsigned char **) window_ptr_1); + if (number_of_windows == 1) + { + Window ** window_ptr_2; + + window_ptr_2 = malloc(sizeof(Window *)); + + /* Check that the window has the same property set to the same value. */ + number_of_windows = fghGetWindowProperty(**window_ptr_1, + wm_check, + XA_WINDOW, + (unsigned char **) window_ptr_2); + if ((number_of_windows == 1) && (**window_ptr_1 == **window_ptr_2)) + { + /* NET WM compliant */ + net_wm_supported = 1; + } + + XFree(*window_ptr_2); + free(window_ptr_2); + } + + XFree(*window_ptr_1); + free(window_ptr_1); + + return net_wm_supported; +} + +/* Check if "hint" is present in "property" for "window". */ +int fgHintPresent(Window window, Atom property, Atom hint) +{ + Atom *atoms; + int number_of_atoms; + int supported; + int i; + + supported = 0; + + number_of_atoms = fghGetWindowProperty(window, + property, + XA_ATOM, + (unsigned char **) &atoms); + for (i = 0; i < number_of_atoms; i++) + { + if (atoms[i] == hint) + { + supported = 1; + break; + } + } + + XFree(atoms); + return supported; +} + +/* + * A call to this function should initialize all the display stuff... + */ +void fgPlatformInitialize( const char* displayName ) +{ + fgDisplay.pDisplay.Display = XOpenDisplay( displayName ); + + if( fgDisplay.pDisplay.Display == NULL ) + fgError( "failed to open display '%s'", XDisplayName( displayName ) ); + + if( !glXQueryExtension( fgDisplay.pDisplay.Display, NULL, NULL ) ) + fgError( "OpenGL GLX extension not supported by display '%s'", + XDisplayName( displayName ) ); + + fgDisplay.pDisplay.Screen = DefaultScreen( fgDisplay.pDisplay.Display ); + fgDisplay.pDisplay.RootWindow = RootWindow( + fgDisplay.pDisplay.Display, + fgDisplay.pDisplay.Screen + ); + + fgDisplay.ScreenWidth = DisplayWidth( + fgDisplay.pDisplay.Display, + fgDisplay.pDisplay.Screen + ); + fgDisplay.ScreenHeight = DisplayHeight( + fgDisplay.pDisplay.Display, + fgDisplay.pDisplay.Screen + ); + + fgDisplay.ScreenWidthMM = DisplayWidthMM( + fgDisplay.pDisplay.Display, + fgDisplay.pDisplay.Screen + ); + fgDisplay.ScreenHeightMM = DisplayHeightMM( + fgDisplay.pDisplay.Display, + fgDisplay.pDisplay.Screen + ); + + fgDisplay.pDisplay.Connection = ConnectionNumber( fgDisplay.pDisplay.Display ); + + /* Create the window deletion atom */ + fgDisplay.pDisplay.DeleteWindow = fghGetAtom("WM_DELETE_WINDOW"); + + /* Create the state and full screen atoms */ + fgDisplay.pDisplay.State = None; + fgDisplay.pDisplay.StateFullScreen = None; + + if (fghNetWMSupported()) + { + const Atom supported = fghGetAtom("_NET_SUPPORTED"); + const Atom state = fghGetAtom("_NET_WM_STATE"); + + /* Check if the state hint is supported. */ + if (fgHintPresent(fgDisplay.pDisplay.RootWindow, supported, state)) + { + const Atom full_screen = fghGetAtom("_NET_WM_STATE_FULLSCREEN"); + + fgDisplay.pDisplay.State = state; + + /* Check if the window manager supports full screen. */ + /** Check "_NET_WM_ALLOWED_ACTIONS" on our window instead? **/ + if (fgHintPresent(fgDisplay.pDisplay.RootWindow, supported, full_screen)) + { + fgDisplay.pDisplay.StateFullScreen = full_screen; + } + } + } + + + fgState.Initialised = GL_TRUE; + + atexit(fgDeinitialize); + + /* InputDevice uses GlutTimerFunc(), so fgState.Initialised must be TRUE */ + fgInitialiseInputDevices(); +} + +void fgPlatformDeinitialiseInputDevices ( void ) +{ + fghCloseInputDevices (); + + fgState.JoysticksInitialised = GL_FALSE; + fgState.InputDevsInitialised = GL_FALSE; +} + + +void fgPlatformCloseDisplay ( void ) +{ + /* + * Make sure all X-client data we have created will be destroyed on + * display closing + */ + XSetCloseDownMode( fgDisplay.pDisplay.Display, DestroyAll ); + + /* + * Close the display connection, destroying all windows we have + * created so far + */ + XCloseDisplay( fgDisplay.pDisplay.Display ); +} + + +void fgPlatformDestroyContext ( SFG_PlatformDisplay pDisplay, SFG_WindowContextType MContext ) +{ + /* Note that the MVisualInfo is not owned by the MenuContext! */ + glXDestroyContext( pDisplay.Display, MContext ); +} \ No newline at end of file