#include "config.h"
#endif
-#define G_LOG_DOMAIN "freeglut-init"
-
-#include "../include/GL/freeglut.h"
+#include <GL/freeglut.h>
#include "freeglut_internal.h"
/*
* TODO BEFORE THE STABLE RELEASE:
*
- * fgDeinitialize() -- Win32's OK, X11 needs the OS-specific deinitialization done
+ * fgDeinitialize() -- Win32's OK, X11 needs the OS-specific
+ * deinitialization done
* glutInitDisplayString() -- display mode string parsing
*
- * Wouldn't it be cool to use gettext() for error messages? I just love bash saying
- * "nie znaleziono pliku" instead of "file not found" :) Is gettext easily portable?
+ * Wouldn't it be cool to use gettext() for error messages? I just love
+ * bash saying "nie znaleziono pliku" instead of "file not found" :)
+ * Is gettext easily portable?
*/
/* -- GLOBAL VARIABLES ----------------------------------------------------- */
/*
* The settings for the current freeglut session
*/
-SFG_State fgState = { { -1, -1, FALSE }, /* Position */
- { 300, 300, TRUE }, /* Size */
+SFG_State fgState = { { -1, -1, GL_FALSE }, /* Position */
+ { 300, 300, GL_TRUE }, /* Size */
GLUT_RGBA | GLUT_SINGLE | GLUT_DEPTH, /* DisplayMode */
- FALSE, /* ForceDirectContext */
- TRUE, /* TryDirectContext */
- FALSE, /* ForceIconic */
- FALSE, /* UseCurrentContext */
- FALSE, /* GLDebugSwitch */
- FALSE, /* XSyncSwitch */
- TRUE, /* IgnoreKeyRepeat */
- 0, /* FPSInterval */
- 0, /* SwapCount */
- 0, /* SwapTime */
+ GL_FALSE, /* Initialised */
+ GL_FALSE, /* ForceDirectContext */
+ GL_TRUE, /* TryDirectContext */
+ GL_FALSE, /* ForceIconic */
+ GL_FALSE, /* UseCurrentContext */
+ GL_FALSE, /* GLDebugSwitch */
+ GL_FALSE, /* XSyncSwitch */
+ GL_FALSE, /* IgnoreKeyRepeat */
+ 0xffffffff, /* Modifiers */
+ 0, /* FPSInterval */
+ 0, /* SwapCount */
+ 0, /* SwapTime */
#if TARGET_HOST_WIN32
- { 0, FALSE }, /* Time */
+ { 0, GL_FALSE }, /* Time */
#else
- { { 0, 0 }, FALSE },
+ { { 0, 0 }, GL_FALSE },
#endif
- { NULL, NULL }, /* Timers */
- NULL, /* IdleCallback */
- FALSE, /* BuildingAMenu */
- 0, /* ActiveMenus */
- NULL, /* MenuStateCallback */
- NULL, /* MenuStatusCallback */
- { 640, 480, TRUE }, /* GameModeSize */
- 16, /* GameModeDepth */
- 72, /* GameModeRefresh */
- GLUT_ACTION_EXIT, /* ActionOnWindowClose */
- GLUT_EXEC_STATE_INIT /* ExecState */
-} ;
+ { NULL, NULL }, /* Timers */
+ { NULL, NULL }, /* FreeTimers */
+ NULL, /* IdleCallback */
+ 0, /* ActiveMenus */
+ NULL, /* MenuStateCallback */
+ NULL, /* MenuStatusCallback */
+ { 640, 480, GL_TRUE }, /* GameModeSize */
+ 16, /* GameModeDepth */
+ 72, /* GameModeRefresh */
+ GLUT_ACTION_EXIT, /* ActionOnWindowClose */
+ GLUT_EXEC_STATE_INIT, /* ExecState */
+ NULL /* ProgramName */
+};
/* -- PRIVATE FUNCTIONS ---------------------------------------------------- */
ATOM atom;
/*
- * What we need to do is to initialize the fgDisplay global structure here...
+ * What we need to do is to initialize the fgDisplay global structure here.
*/
fgDisplay.Instance = GetModuleHandle( NULL );
ZeroMemory( &wc, sizeof(WNDCLASS) );
/*
- * Each of the windows should have its own device context...
+ * Each of the windows should have its own device context, and we
+ * want redraw events during Vertical and Horizontal Resizes by
+ * the user.
+ *
+ * XXX Old code had "| CS_DBCLCKS" commented out. Plans for the
+ * XXX future? Dead-end idea?
*/
- wc.style = CS_OWNDC;
+ wc.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = fgWindowProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
* Register the window class
*/
atom = RegisterClass( &wc );
- assert( atom != 0 );
+ assert( atom );
}
/*
fgDisplay.ScreenHeight = GetSystemMetrics( SM_CYSCREEN );
{
- HWND desktop = GetDesktopWindow();
+ HWND desktop = GetDesktopWindow( );
HDC context = GetDC( desktop );
fgDisplay.ScreenWidthMM = GetDeviceCaps( context, HORZSIZE );
#endif
fgJoystickInit( 0 );
+ fgJoystickInit( 1 );
+
+ fgState.Initialised = GL_TRUE;
}
/*
{
SFG_Timer *timer;
- if( !fgState.Time.Set )
+ if( !fgState.Initialised )
{
- fgWarning( "fgDeinitialize(): fgState.Timer is null => "
- "no valid initialization has been performed" );
+ fgWarning( "fgDeinitialize(): "
+ "no valid initialization has been performed" );
return;
}
+ /* fgState.Initialised = GL_FALSE; */
+
/*
* If there was a menu created, destroy the rendering context
*/
- if ( fgStructure.MenuContext )
+ if( fgStructure.MenuContext )
{
- free ( fgStructure.MenuContext ) ;
- fgStructure.MenuContext = NULL ;
+ free( fgStructure.MenuContext );
+ fgStructure.MenuContext = NULL;
}
- fgDestroyStructure();
+ fgDestroyStructure( );
+
+ while( (timer = fgState.Timers.First) )
+ {
+ fgListRemove( &fgState.Timers, &timer->Node );
+ free( timer );
+ }
- while ( (timer = (SFG_Timer *)fgState.Timers.First) != NULL )
+ while( (timer = fgState.FreeTimers.First) )
{
- fgListRemove ( &fgState.Timers, &timer->Node ) ;
- free ( timer ) ;
+ fgListRemove( &fgState.FreeTimers, &timer->Node );
+ free( timer );
}
- fgJoystickClose();
+ fgJoystickClose( );
- fgState.Position.X = -1 ;
- fgState.Position.Y = -1 ;
- fgState.Position.Use = FALSE ;
+ fgState.Initialised = GL_FALSE;
- fgState.Size.X = 300 ;
- fgState.Size.Y = 300 ;
- fgState.Size.Use = TRUE ;
+ fgState.Position.X = -1;
+ fgState.Position.Y = -1;
+ fgState.Position.Use = GL_FALSE;
+
+ fgState.Size.X = 300;
+ fgState.Size.Y = 300;
+ fgState.Size.Use = GL_TRUE;
fgState.DisplayMode = GLUT_RGBA | GLUT_SINGLE | GLUT_DEPTH;
- fgState.ForceDirectContext = FALSE;
- fgState.TryDirectContext = TRUE;
- fgState.ForceIconic = FALSE;
- fgState.UseCurrentContext = FALSE;
- fgState.GLDebugSwitch = FALSE;
- fgState.XSyncSwitch = FALSE;
- fgState.ActionOnWindowClose = GLUT_ACTION_EXIT ;
- fgState.ExecState = GLUT_EXEC_STATE_INIT ;
+ fgState.ForceDirectContext = GL_FALSE;
+ fgState.TryDirectContext = GL_TRUE;
+ fgState.ForceIconic = GL_FALSE;
+ fgState.UseCurrentContext = GL_FALSE;
+ fgState.GLDebugSwitch = GL_FALSE;
+ fgState.XSyncSwitch = GL_FALSE;
+ fgState.ActionOnWindowClose = GLUT_ACTION_EXIT;
+ fgState.ExecState = GLUT_EXEC_STATE_INIT;
- fgState.IgnoreKeyRepeat = TRUE;
+ fgState.IgnoreKeyRepeat = GL_TRUE;
+ fgState.Modifiers = 0xffffffff;
fgState.GameModeSize.X = 640;
fgState.GameModeSize.Y = 480;
fgState.GameModeDepth = 16;
fgState.GameModeRefresh = 72;
- fgState.Time.Set = FALSE ;
+ fgState.Time.Set = GL_FALSE;
+
+ fgListInit( &fgState.Timers );
+ fgListInit( &fgState.FreeTimers );
- fgState.Timers.First = fgState.Timers.Last = NULL ;
- fgState.IdleCallback = NULL ;
- fgState.MenuStateCallback = (FGCBmenuState)NULL ;
- fgState.MenuStatusCallback = (FGCBmenuStatus)NULL ;
+ fgState.IdleCallback = NULL;
+ fgState.MenuStateCallback = ( FGCBMenuState )NULL;
+ fgState.MenuStatusCallback = ( FGCBMenuStatus )NULL;
fgState.SwapCount = 0;
fgState.SwapTime = 0;
fgState.FPSInterval = 0;
+ if( fgState.ProgramName )
+ {
+ free( fgState.ProgramName );
+ fgState.ProgramName = NULL;
+ }
+
+
#if TARGET_HOST_UNIX_X11
/*
- * Make sure all X-client data we have created will be destroyed on display closing
+ * Make sure all X-client data we have created will be destroyed on
+ * display closing
*/
XSetCloseDownMode( fgDisplay.Display, DestroyAll );
/*
- * Close the display connection, destroying all windows we have created so far
+ * Close the display connection, destroying all windows we have
+ * created so far
*/
XCloseDisplay( fgDisplay.Display );
#endif
}
+/*
+ * Everything inside the following #ifndef is copied from the X sources.
+ */
+
+#if TARGET_HOST_WIN32
+
+/*
+
+Copyright 1985, 1986, 1987,1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+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 THE OPEN GROUP 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.
+
+Except as contained in this notice, the name of The Open Group shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from The Open Group.
+
+*/
+
+#define NoValue 0x0000
+#define XValue 0x0001
+#define YValue 0x0002
+#define WidthValue 0x0004
+#define HeightValue 0x0008
+#define AllValues 0x000F
+#define XNegative 0x0010
+#define YNegative 0x0020
+
+/*
+ * XParseGeometry parses strings of the form
+ * "=<width>x<height>{+-}<xoffset>{+-}<yoffset>", where
+ * width, height, xoffset, and yoffset are unsigned integers.
+ * Example: "=80x24+300-49"
+ * The equal sign is optional.
+ * It returns a bitmask that indicates which of the four values
+ * were actually found in the string. For each value found,
+ * the corresponding argument is updated; for each value
+ * not found, the corresponding argument is left unchanged.
+ */
+
+static int
+ReadInteger(char *string, char **NextString)
+{
+ register int Result = 0;
+ int Sign = 1;
+
+ if (*string == '+')
+ string++;
+ else if (*string == '-')
+ {
+ string++;
+ Sign = -1;
+ }
+ for (; (*string >= '0') && (*string <= '9'); string++)
+ {
+ Result = (Result * 10) + (*string - '0');
+ }
+ *NextString = string;
+ if (Sign >= 0)
+ return Result;
+ else
+ return -Result;
+}
+
+static int XParseGeometry (
+ const char *string,
+ int *x,
+ int *y,
+ unsigned int *width, /* RETURN */
+ unsigned int *height) /* RETURN */
+{
+ int mask = NoValue;
+ register char *strind;
+ unsigned int tempWidth = 0, tempHeight = 0;
+ int tempX = 0, tempY = 0;
+ char *nextCharacter;
+
+ if ( (string == NULL) || (*string == '\0'))
+ return mask;
+ if (*string == '=')
+ string++; /* ignore possible '=' at beg of geometry spec */
+
+ strind = (char *)string;
+ if (*strind != '+' && *strind != '-' && *strind != 'x') {
+ tempWidth = ReadInteger(strind, &nextCharacter);
+ if (strind == nextCharacter)
+ return 0;
+ strind = nextCharacter;
+ mask |= WidthValue;
+ }
+
+ if (*strind == 'x' || *strind == 'X') {
+ strind++;
+ tempHeight = ReadInteger(strind, &nextCharacter);
+ if (strind == nextCharacter)
+ return 0;
+ strind = nextCharacter;
+ mask |= HeightValue;
+ }
+
+ if ((*strind == '+') || (*strind == '-')) {
+ if (*strind == '-') {
+ strind++;
+ tempX = -ReadInteger(strind, &nextCharacter);
+ if (strind == nextCharacter)
+ return 0;
+ strind = nextCharacter;
+ mask |= XNegative;
+ }
+ else
+ {
+ strind++;
+ tempX = ReadInteger(strind, &nextCharacter);
+ if (strind == nextCharacter)
+ return 0;
+ strind = nextCharacter;
+ }
+ mask |= XValue;
+ if ((*strind == '+') || (*strind == '-')) {
+ if (*strind == '-') {
+ strind++;
+ tempY = -ReadInteger(strind, &nextCharacter);
+ if (strind == nextCharacter)
+ return 0;
+ strind = nextCharacter;
+ mask |= YNegative;
+ }
+ else
+ {
+ strind++;
+ tempY = ReadInteger(strind, &nextCharacter);
+ if (strind == nextCharacter)
+ return 0;
+ strind = nextCharacter;
+ }
+ mask |= YValue;
+ }
+ }
+
+ /* If strind isn't at the end of the string the it's an invalid
+ geometry specification. */
+
+ if (*strind != '\0') return 0;
+
+ if (mask & XValue)
+ *x = tempX;
+ if (mask & YValue)
+ *y = tempY;
+ if (mask & WidthValue)
+ *width = tempWidth;
+ if (mask & HeightValue)
+ *height = tempHeight;
+ return mask;
+}
+#endif
/* -- INTERFACE FUNCTIONS -------------------------------------------------- */
void FGAPIENTRY glutInit( int* pargc, char** argv )
{
char* displayName = NULL;
+ char* geometry = NULL;
int i, j, argc = *pargc;
+ if( fgState.Initialised )
+ fgError( "illegal glutInit() reinitialization attempt" );
+
if (pargc && *pargc && argv && *argv && **argv)
+ {
fgState.ProgramName = strdup (*argv);
- else
- fgState.ProgramName = strdup ("");
- if (!fgState.ProgramName)
- fgError ("Could not allocate space for the program's name.");
- if( fgState.Time.Set )
- fgError( "illegal glutInit() reinitialization attemp" );
+ if( !fgState.ProgramName )
+ fgError ("Could not allocate space for the program's name.");
+ }
- fgCreateStructure();
+ fgCreateStructure( );
-#if TARGET_HOST_UNIX_X11
- gettimeofday(&fgState.Time.Value, NULL);
-#elif TARGET_HOST_WIN32
- fgState.Time.Value = timeGetTime();
-#endif
- fgState.Time.Set = TRUE;
+ fgElapsedTime( );
/* check if GLUT_FPS env var is set */
{
- const char *fps = getenv ( "GLUT_FPS" );
- if ( fps )
- {
- sscanf ( fps, "%d", &fgState.FPSInterval ) ;
- if ( fgState.FPSInterval <= 0 )
- fgState.FPSInterval = 5000 ; /* 5000 milliseconds */
- }
+ const char *fps = getenv( "GLUT_FPS" );
+ if( fps )
+ {
+ int interval;
+ sscanf( fps, "%d", &interval );
+
+ if( interval <= 0 )
+ fgState.FPSInterval = 5000; /* 5000 millisecond default */
+ else
+ fgState.FPSInterval = interval;
+ }
}
-#if TARGET_HOST_WIN32
- if ( !getenv ( "DISPLAY" ) )
- displayName = strdup ( "" ) ;
- else
-#endif
- displayName = strdup( getenv( "DISPLAY" ) );
- if (!displayName)
- fgError ("Could not allocate space for display name.");
+ displayName = getenv( "DISPLAY");
- for( i=1; i<argc; i++ )
+ for( i = 1; i < argc; i++ )
{
if( strcmp( argv[ i ], "-display" ) == 0 )
{
if( ++i >= argc )
fgError( "-display parameter must be followed by display name" );
- if( displayName )
- free( displayName );
- displayName = strdup( argv[ i ] );
- if (!displayName)
- fgError( "Could not allocate space for display name (%s)",
- argv [i]);
+ displayName = argv[ i ];
argv[ i - 1 ] = NULL;
argv[ i ] = NULL;
- (*pargc) -= 2;
+ ( *pargc ) -= 2;
}
else if( strcmp( argv[ i ], "-geometry" ) == 0 )
{
- int result, x, y;
- unsigned int w, h;
-
- if ( ++i >= argc )
- fgError( "-geometry parameter must be followed by window "
- "geometry settings" );
- result = sscanf ( argv[i], "%dx%d+%d+%d", &x, &y, &w, &h );
-
- if ( result > 3 )
- fgState.Size.Y = h;
- if ( result > 2 )
- fgState.Size.X = w;
-
- if( result > 1 )
- {
- if( y < 0 )
- fgState.Position.Y =
- fgDisplay.ScreenHeight + y - fgState.Size.Y;
- else
- fgState.Position.Y = y;
- }
+ if( ++i >= argc )
+ fgError( "-geometry parameter must be followed by window "
+ "geometry settings" );
- if( result > 0 )
- {
- if( x < 0 )
- fgState.Position.X =
- fgDisplay.ScreenWidth + x - fgState.Size.X;
- else
- fgState.Position.X = x;
- }
+ geometry = argv[ i ];
argv[ i - 1 ] = NULL;
argv[ i ] = NULL;
- (*pargc) -= 2;
+ ( *pargc ) -= 2;
}
else if( strcmp( argv[ i ], "-direct" ) == 0)
{
- if( fgState.TryDirectContext == FALSE )
+ if( ! fgState.TryDirectContext )
fgError( "parameters ambiguity, -direct and -indirect "
"cannot be both specified" );
- fgState.ForceDirectContext = TRUE;
+ fgState.ForceDirectContext = GL_TRUE;
argv[ i ] = NULL;
- (*pargc)--;
+ ( *pargc )--;
}
else if( strcmp( argv[ i ], "-indirect" ) == 0 )
{
- if( fgState.ForceDirectContext == TRUE )
+ if( fgState.ForceDirectContext )
fgError( "parameters ambiguity, -direct and -indirect "
"cannot be both specified" );
- fgState.TryDirectContext = FALSE;
+ fgState.TryDirectContext = GL_FALSE;
argv[ i ] = NULL;
(*pargc)--;
}
else if( strcmp( argv[ i ], "-iconic" ) == 0 )
{
- fgState.ForceIconic = TRUE;
+ fgState.ForceIconic = GL_TRUE;
argv[ i ] = NULL;
- (*pargc)--;
+ ( *pargc )--;
}
else if( strcmp( argv[ i ], "-gldebug" ) == 0 )
{
- fgState.GLDebugSwitch = TRUE;
+ fgState.GLDebugSwitch = GL_TRUE;
argv[ i ] = NULL;
- (*pargc)--;
+ ( *pargc )--;
}
else if( strcmp( argv[ i ], "-sync" ) == 0 )
{
- fgState.XSyncSwitch = TRUE;
+ fgState.XSyncSwitch = GL_TRUE;
argv[ i ] = NULL;
- (*pargc)--;
+ ( *pargc )--;
}
}
/*
* Compact {argv}.
*/
- j = 2 ;
+ j = 2;
for( i = 1; i < *pargc; i++, j++ )
{
if( argv[ i ] == NULL )
{
/* Guaranteed to end because there are "*pargc" arguments left */
- while ( argv[j] == NULL )
+ while ( argv[ j ] == NULL )
j++;
- argv[i] = argv[j] ;
+ argv[ i ] = argv[ j ];
}
}
/*
- * Have the display created now. As I am too lazy to implement
- * the program arguments parsing, we will have the DISPLAY
- * environment variable used for opening the X display:
- *
- * XXX The above comment is rather unclear. We have just
- * XXX completed parsing of the program arguments for GLUT
- * XXX parameters. We obviously canNOT parse the application-
- * XXX specific parameters. Can someone re-write the above
- * XXX more clearly?
+ * Have the display created now. If there wasn't a "-display"
+ * in the program arguments, we will use the DISPLAY environment
+ * variable for opening the X display (see code above):
*/
fgInitialize( displayName );
/*
- * Check for the minus one settings for both position and size...
+ * Geometry parsing deffered until here because we may need the screen
+ * size.
*/
- if( fgState.Position.X < 0 || fgState.Position.Y < 0 )
- fgState.Position.Use = FALSE;
- if( fgState.Size.X < 0 || fgState.Size.Y < 0 )
- fgState.Size.Use = FALSE;
+ if (geometry )
+ {
+ int mask = XParseGeometry( geometry,
+ &fgState.Position.X, &fgState.Position.Y,
+ &fgState.Size.X, &fgState.Size.Y );
+
+ if( (mask & (WidthValue|HeightValue)) == (WidthValue|HeightValue) )
+ fgState.Size.Use = GL_TRUE;
+
+ if( mask & XNegative )
+ fgState.Position.X += fgDisplay.ScreenWidth - fgState.Size.X;
- if( displayName )
- free( displayName );
+ if( mask & YNegative )
+ fgState.Position.Y += fgDisplay.ScreenHeight - fgState.Size.Y;
+
+ if( (mask & (XValue|YValue)) == (XValue|YValue) )
+ fgState.Position.Use = GL_TRUE;
+ }
}
/*
*/
void FGAPIENTRY glutInitWindowPosition( int x, int y )
{
- if( (x >= 0) && (y >= 0) )
- {
+ fgState.Position.X = x;
+ fgState.Position.Y = y;
- fgState.Position.X = x;
- fgState.Position.Y = y;
- fgState.Position.Use = TRUE;
- }
+ if( ( x >= 0 ) && ( y >= 0 ) )
+ fgState.Position.Use = GL_TRUE;
else
- {
- fgState.Position.X = -1;
- fgState.Position.Y = -1;
- fgState.Position.Use = FALSE;
- }
+ fgState.Position.Use = GL_FALSE;
}
/*
*/
void FGAPIENTRY glutInitWindowSize( int width, int height )
{
- if( (width > 0) && (height > 0) )
- {
- fgState.Size.X = width;
- fgState.Size.Y = height;
- fgState.Size.Use = TRUE;
- }
+ fgState.Size.X = width;
+ fgState.Size.Y = height;
+
+ if( ( width > 0 ) && ( height > 0 ) )
+ fgState.Size.Use = GL_TRUE;
else
- {
- fgState.Size.X = -1;
- fgState.Size.Y = -1;
- fgState.Size.Use = FALSE;
- }
+ fgState.Size.Use = GL_FALSE;
}
/*
/* -- INIT DISPLAY STRING PARSING ------------------------------------------ */
-#if 0 /* FIXME: CJP */
-/*
- * There is a discrete number of comparison operators we can encounter:
- *
- * comparison ::= "=" | "!=" | "<" | ">" | "<=" | ">=" | "~"
- */
-#define FG_NONE 0x0000
-#define FG_EQUAL 0x0001
-#define FG_NOT_EQUAL 0x0002
-#define FG_LESS 0x0003
-#define FG_MORE 0x0004
-#define FG_LESS_OR_EQUAL 0x0005
-#define FG_MORE_OR_EQUAL 0x0006
-#define FG_CLOSEST 0x0007
-
-/*
- * The caller can feed us with a number of capability tokens:
- *
- * capability ::= "alpha" | "acca" | "acc" | "blue" | "buffer" | "conformant" | "depth" | "double" |
- * "green" | "index" | "num" | "red" | "rgba" | "rgb" | "luminance" | "stencil" |
- * "single" | "stereo" | "samples" | "slow" | "win32pdf" | "xvisual" | "xstaticgray" |
- * "xgrayscale" | "xstaticcolor" | "xpseudocolor" | "xtruecolor" | "xdirectcolor"
- */
-static gchar* g_Tokens[] =
-{
- "none", "alpha", "acca", "acc", "blue", "buffer", "conformant", "depth", "double", "green",
- "index", "num", "red", "rgba", "rgb", "luminance", "stencil", "single", "stereo", "samples",
- "slow", "win32pdf", "xvisual", "xstaticgray", "xgrayscale", "xstaticcolor", "xpseudocolor",
- "xtruecolor", "xdirectcolor", NULL
-};
-
-/*
- * The structure to hold the parsed display string tokens
- */
-typedef struct tagSFG_Capability SFG_Capability;
-struct tagSFG_Capability
-{
- gint capability; /* the capability token enumerator */
- gint comparison; /* the comparison operator used */
- gint value; /* the value we're comparing to */
-};
-
-/*
- * The scanner configuration for the init display string
- */
-static GScannerConfig fgInitDisplayStringScannerConfig =
-{
- ( " \t\r\n" ) /* cset_skip_characters */,
- (
- G_CSET_a_2_z
- "_"
- G_CSET_A_2_Z
- ) /* cset_identifier_first */,
- (
- G_CSET_a_2_z
- "_0123456789"
- G_CSET_A_2_Z
- G_CSET_LATINS
- G_CSET_LATINC
- "<>!=~"
- ) /* cset_identifier_nth */,
- ( "#\n" ) /* cpair_comment_single */,
- FALSE /* case_sensitive */,
- TRUE /* skip_comment_multi */,
- TRUE /* skip_comment_single */,
- TRUE /* scan_comment_multi */,
- TRUE /* scan_identifier */,
- FALSE /* scan_identifier_1char */,
- FALSE /* scan_identifier_NULL */,
- TRUE /* scan_symbols */,
- FALSE /* scan_binary */,
- TRUE /* scan_octal */,
- TRUE /* scan_float */,
- TRUE /* scan_hex */,
- FALSE /* scan_hex_dollar */,
- TRUE /* scan_string_sq */,
- TRUE /* scan_string_dq */,
- TRUE /* numbers_2_int */,
- FALSE /* int_2_float */,
- FALSE /* identifier_2_string */,
- TRUE /* char_2_token */,
- FALSE /* symbol_2_token */,
- FALSE /* scope_0_fallback */,
-};
-
-/*
- * Sets the default display mode for all new windows using a string
- */
-void FGAPIENTRY glutInitDisplayString( char* displayMode )
-{
- /*
- * display_string ::= (switch)
- * switch ::= capability [comparison value]
- * comparison ::= "=" | "!=" | "<" | ">" | "<=" | ">=" | "~"
- * capability ::= "alpha" | "acca" | "acc" | "blue" | "buffer" | "conformant" |
- * "depth" | "double" | "green" | "index" | "num" | "red" | "rgba" |
- * "rgb" | "luminance" | "stencil" | "single" | "stereo" |
- * "samples" | "slow" | "win32pdf" | "xvisual" | "xstaticgray" |
- * "xgrayscale" | "xstaticcolor" | "xpseudocolor" |
- * "xtruecolor" | "xdirectcolor"
- * value ::= 0..9 [value]
- *
- * The display string grammar. This should be EBNF, but I couldn't find the definitions so, to
- * clarify: (expr) means 0 or more times the expression, [expr] means 0 or 1 times expr.
- *
- * Create a new GLib lexical analyzer to process the display mode string
- */
- GScanner* scanner = g_scanner_new( &fgInitDisplayStringScannerConfig );
- GList* caps = NULL;
- gint i;
-
- /*
- * Fail if the display mode string is empty or the scanner failed to initialize
- */
- freeglut_return_if_fail( (scanner != NULL) && (strlen( displayMode ) > 0) );
-
- /*
- * Set the scanner's input name (for debugging)
- */
- scanner->input_name = "glutInitDisplayString";
-
- /*
- * Start the lexical analysis of the extensions string
- */
- g_scanner_input_text( scanner, displayMode, strlen( displayMode ) );
-
- /*
- * While there are any more tokens to be checked...
- */
- while( !g_scanner_eof( scanner ) )
- {
- /*
- * Actually we're expecting only string tokens
- */
- GTokenType tokenType = g_scanner_get_next_token( scanner );
-
- /*
- * We are looking for identifiers
- */
- if( tokenType == G_TOKEN_IDENTIFIER )
- {
- gchar* capability = NULL; /* the capability identifier string (always present) */
- gint capID = 0; /* the capability identifier value (from g_Tokens) */
- gint comparison = 0; /* the comparison operator value, see definitions */
- gchar* valueString = NULL; /* if the previous one is present, this is needed */
- gint value = 0; /* the integer value converted using a strtol call */
- SFG_Capability* capStruct; /* the capability description structure */
-
- /*
- * OK. The general rule of thumb that we always should be getting a capability identifier
- * string (see the grammar description). If it is followed by a comparison identifier, then
- * there must follow an integer value we're comparing the capability to...
- *
- * Have the current token analyzed with that in mind...
- */
- for( i=0; i<(gint) strlen( scanner->value.v_identifier ); i++ )
- {
- gchar c = scanner->value.v_identifier[ i ];
-
- if( (c == '=') || (c == '!') || (c == '<') || (c == '>') || (c == '~') )
- break;
- }
-
- /*
- * Here we go with the length of the capability identifier string.
- * In the worst of cases, it is as long as the token identifier.
- */
- capability = g_strndup( scanner->value.v_identifier, i );
-
- /*
- * OK. Is there a chance for comparison and value identifiers to follow?
- * Note: checking against i+1 as this handles two cases: single character
- * comparison operator and first of value's digits, which must always be
- * there, or the two-character comparison operators.
- */
- if( (i + 1) < (gint) strlen( scanner->value.v_identifier ) )
- {
- /*
- * Yeah, indeed, it is the i-th character to start the identifier, then.
- */
- gchar c1 = scanner->value.v_identifier[ i + 0 ];
- gchar c2 = scanner->value.v_identifier[ i + 1 ];
-
- if( (c1 == '=') ) { i += 1; comparison = FG_EQUAL; } else
- if( (c1 == '!') && (c2 == '=') ) { i += 2; comparison = FG_NOT_EQUAL; } else
- if( (c1 == '<') && (c2 == '=') ) { i += 2; comparison = FG_LESS_OR_EQUAL; } else
- if( (c1 == '>') && (c2 == '=') ) { i += 2; comparison = FG_MORE_OR_EQUAL; } else
- if( (c1 == '<') ) { i += 1; comparison = FG_LESS; } else
- if( (c1 == '>') ) { i += 1; comparison = FG_MORE; } else
- if( (c1 == '~') ) { i += 1; comparison = FG_CLOSEST; } else
- g_warning( "invalid comparison operator in token `%s'", scanner->value.v_identifier );
- }
-
- /*
- * Grab the value string that must follow the comparison operator...
- */
- if( comparison != FG_NONE && i < (gint) strlen( scanner->value.v_identifier ) )
- {
- valueString = strdup( scanner->value.v_identifier + i );
- if (!valueString)
- fgError ("Could not allocate an internal string.");
- }
-
- /*
- * If there was a value string, convert it to integer...
- */
- if( comparison != FG_NONE && strlen( valueString ) > 0 )
- value = strtol( valueString, NULL, 0 );
-
- /*
- * Now we need to match the capability string and its ID
- */
- for( i=0; g_Tokens[ i ]!=NULL; i++ )
- {
- if( strcmp( capability, g_Tokens[ i ] ) == 0 )
- {
- /*
- * Looks like we've found the one we were looking for
- */
- capID = i;
- break;
- }
- }
-
- /*
- * Create a new capability description structure
- */
- capStruct = g_new0( SFG_Capability, 1 );
-
- /*
- * Fill in the cap's values, as we have parsed it:
- */
- capStruct->capability = capID;
- capStruct->comparison = comparison;
- capStruct->value = value;
-
- /*
- * Add the new capabaility to the caps list
- */
- caps = g_list_append( caps, capStruct );
-
- /*
- * Clean up the local mess and keep rolling on
- */
- g_free( valueString );
- g_free( capability );
- }
- }
-
- /*
- * Now that we have converted the string into somewhat more machine-friendly
- * form, proceed with matching the frame buffer configuration...
- *
- * The caps list could be passed to a function that would try finding the closest
- * matching pixel format, visual, frame buffer configuration or whatever. It would
- * be good to convert the glutInitDisplayMode() to use the same method.
- */
-#if 0
- g_message( "found %i capability preferences", g_list_length( caps ) );
-
- g_message( "token `%s': cap: %i, com: %i, val: %i",
- scanner->value.v_identifier,
- capStruct->capability,
- capStruct->comparison,
- capStruct->value
- );
-#endif
-
- /*
- * Free the capabilities we have parsed
- */
- for( i=0; i<(gint) g_list_length( caps ); i++ )
- g_free( g_list_nth( caps, i )->data );
-
- /*
- * Destroy the capabilities list itself
- */
- g_list_free( caps );
-
- /*
- * Free the lexical scanner now...
- */
- g_scanner_destroy( scanner );
-}
-#endif
-
#define NUM_TOKENS 28
static char* Tokens[] =
{
- "alpha", "acca", "acc", "blue", "buffer", "conformant", "depth", "double", "green",
- "index", "num", "red", "rgba", "rgb", "luminance", "stencil", "single", "stereo", "samples",
- "slow", "win32pdf", "xvisual", "xstaticgray", "xgrayscale", "xstaticcolor", "xpseudocolor",
+ "alpha", "acca", "acc", "blue", "buffer", "conformant", "depth", "double",
+ "green", "index", "num", "red", "rgba", "rgb", "luminance", "stencil",
+ "single", "stereo", "samples", "slow", "win32pdf", "xvisual",
+ "xstaticgray", "xgrayscale", "xstaticcolor", "xpseudocolor",
"xtruecolor", "xdirectcolor"
};
static int TokenLengths[] =
{
- 5, 4, 3, 4, 6, 10, 5, 6, 5,
- 5, 3, 3, 4, 3, 9, 7, 6, 6, 7,
- 4, 8, 7, 11, 10, 12, 12,
- 10, 12
+ 5, 4, 3, 4, 6, 10, 5, 6,
+ 5, 5, 3, 3, 4, 3, 9, 7,
+ 6, 6, 7, 4, 8, 7,
+ 11, 10, 12, 12,
+ 10, 12
};
void FGAPIENTRY glutInitDisplayString( const char* displayMode )
{
- int glut_state_flag = 0 ;
- /*
- * Unpack a lot of options from a character string. The options are delimited by blanks or tabs.
- */
- char *token ;
- int len = strlen ( displayMode ) ;
- char *buffer = (char *)malloc ( (len+1) * sizeof(char) ) ;
- memcpy ( buffer, displayMode, len ) ;
- buffer[len] = '\0' ;
-
- token = strtok ( buffer, " \t" ) ;
- while ( token )
- {
+ int glut_state_flag = 0 ;
/*
- * Process this token
+ * Unpack a lot of options from a character string. The options are
+ * delimited by blanks or tabs.
*/
- int i ;
- for ( i = 0; i < NUM_TOKENS; i++ )
- {
- if ( strncmp ( token, Tokens[i], TokenLengths[i] ) == 0 ) break ;
- }
-
- switch ( i )
+ char *token ;
+ int len = strlen ( displayMode );
+ char *buffer = (char *)malloc ( (len+1) * sizeof(char) );
+ memcpy ( buffer, displayMode, len );
+ buffer[len] = '\0';
+
+ token = strtok ( buffer, " \t" );
+ while ( token )
{
- case 0 : /* "alpha": Alpha color buffer precision in bits */
- glut_state_flag |= GLUT_ALPHA ; /* Somebody fix this for me! */
- break ;
-
- case 1 : /* "acca": Red, green, blue, and alpha accumulation buffer precision in bits */
- break ;
-
- case 2 : /* "acc": Red, green, and blue accumulation buffer precision in bits with zero bits alpha */
- glut_state_flag |= GLUT_ACCUM ; /* Somebody fix this for me! */
- break ;
-
- case 3 : /* "blue": Blue color buffer precision in bits */
- break ;
-
- case 4 : /* "buffer": Number of bits in the color index color buffer */
- break ;
-
- case 5 : /* "conformant": Boolean indicating if the frame buffer configuration is conformant or not */
- break ;
-
- case 6 : /* "depth": Number of bits of precsion in the depth buffer */
- glut_state_flag |= GLUT_DEPTH ; /* Somebody fix this for me! */
- break ;
-
- case 7 : /* "double": Boolean indicating if the color buffer is double buffered */
- glut_state_flag |= GLUT_DOUBLE ;
- break ;
-
- case 8 : /* "green": Green color buffer precision in bits */
- break ;
-
- case 9 : /* "index": Boolean if the color model is color index or not */
- glut_state_flag |= GLUT_INDEX ;
- break ;
-
- case 10 : /* "num": A special capability name indicating where the value represents the Nth frame buffer configuration matching the description string */
- break ;
-
- case 11 : /* "red": Red color buffer precision in bits */
- break ;
-
- case 12 : /* "rgba": Number of bits of red, green, blue, and alpha in the RGBA color buffer */
- glut_state_flag |= GLUT_RGBA ; /* Somebody fix this for me! */
- break ;
-
- case 13 : /* "rgb": Number of bits of red, green, and blue in the RGBA color buffer with zero bits alpha */
- glut_state_flag |= GLUT_RGB ; /* Somebody fix this for me! */
- break ;
-
- case 14 : /* "luminance": Number of bits of red in the RGBA and zero bits of green, blue (alpha not specified) of color buffer precision */
- glut_state_flag |= GLUT_LUMINANCE ; /* Somebody fix this for me! */
- break ;
-
- case 15 : /* "stencil": Number of bits in the stencil buffer */
- glut_state_flag |= GLUT_STENCIL ; /* Somebody fix this for me! */
- break ;
-
- case 16 : /* "single": Boolean indicate the color buffer is single buffered */
- glut_state_flag |= GLUT_SINGLE ;
- break ;
-
- case 17 : /* "stereo": Boolean indicating the color buffer supports OpenGL-style stereo */
- glut_state_flag |= GLUT_STEREO ;
- break ;
-
- case 18 : /* "samples": Indicates the number of multisamples to use based on GLX's SGIS_multisample extension (for antialiasing) */
- glut_state_flag |= GLUT_MULTISAMPLE ; /* Somebody fix this for me! */
- break ;
-
- case 19 : /* "slow": Boolean indicating if the frame buffer configuration is slow or not */
- break ;
+ /*
+ * Process this token
+ */
+ int i ;
+ for ( i = 0; i < NUM_TOKENS; i++ )
+ {
+ if ( strncmp ( token, Tokens[i], TokenLengths[i] ) == 0 ) break ;
+ }
- case 20 : /* "win32pdf": matches the Win32 Pixel Format Descriptor by number */
+ switch ( i )
+ {
+ case 0 : /* "alpha": Alpha color buffer precision in bits */
+ glut_state_flag |= GLUT_ALPHA ; /* Somebody fix this for me! */
+ break ;
+
+ case 1 : /* "acca": Red, green, blue, and alpha accumulation buffer
+ precision in bits */
+ break ;
+
+ case 2 : /* "acc": Red, green, and blue accumulation buffer precision
+ in bits with zero bits alpha */
+ glut_state_flag |= GLUT_ACCUM ; /* Somebody fix this for me! */
+ break ;
+
+ case 3 : /* "blue": Blue color buffer precision in bits */
+ break ;
+
+ case 4 : /* "buffer": Number of bits in the color index color buffer
+ */
+ break ;
+
+ case 5 : /* "conformant": Boolean indicating if the frame buffer
+ configuration is conformant or not */
+ break ;
+
+ case 6 : /* "depth": Number of bits of precsion in the depth buffer */
+ glut_state_flag |= GLUT_DEPTH ; /* Somebody fix this for me! */
+ break ;
+
+ case 7 : /* "double": Boolean indicating if the color buffer is
+ double buffered */
+ glut_state_flag |= GLUT_DOUBLE ;
+ break ;
+
+ case 8 : /* "green": Green color buffer precision in bits */
+ break ;
+
+ case 9 : /* "index": Boolean if the color model is color index or not
+ */
+ glut_state_flag |= GLUT_INDEX ;
+ break ;
+
+ case 10 : /* "num": A special capability name indicating where the
+ value represents the Nth frame buffer configuration
+ matching the description string */
+ break ;
+
+ case 11 : /* "red": Red color buffer precision in bits */
+ break ;
+
+ case 12 : /* "rgba": Number of bits of red, green, blue, and alpha in
+ the RGBA color buffer */
+ glut_state_flag |= GLUT_RGBA ; /* Somebody fix this for me! */
+ break ;
+
+ case 13 : /* "rgb": Number of bits of red, green, and blue in the
+ RGBA color buffer with zero bits alpha */
+ glut_state_flag |= GLUT_RGB ; /* Somebody fix this for me! */
+ break ;
+
+ case 14 : /* "luminance": Number of bits of red in the RGBA and zero
+ bits of green, blue (alpha not specified) of color buffer
+ precision */
+ glut_state_flag |= GLUT_LUMINANCE ; /* Somebody fix this for me! */
+ break ;
+
+ case 15 : /* "stencil": Number of bits in the stencil buffer */
+ glut_state_flag |= GLUT_STENCIL; /* Somebody fix this for me! */
+ break ;
+
+ case 16 : /* "single": Boolean indicate the color buffer is single
+ buffered */
+ glut_state_flag |= GLUT_SINGLE ;
+ break ;
+
+ case 17 : /* "stereo": Boolean indicating the color buffer supports
+ OpenGL-style stereo */
+ glut_state_flag |= GLUT_STEREO ;
+ break ;
+
+ case 18 : /* "samples": Indicates the number of multisamples to use
+ based on GLX's SGIS_multisample extension (for
+ antialiasing) */
+ glut_state_flag |= GLUT_MULTISAMPLE ; /*Somebody fix this for me!*/
+ break ;
+
+ case 19 : /* "slow": Boolean indicating if the frame buffer
+ configuration is slow or not */
+ break ;
+
+ case 20 : /* "win32pdf": matches the Win32 Pixel Format Descriptor by
+ number */
#if TARGET_HOST_WIN32
#endif
- break ;
+ break ;
- case 21 : /* "xvisual": matches the X visual ID by number */
+ case 21 : /* "xvisual": matches the X visual ID by number */
#if TARGET_HOST_UNIX_X11
#endif
- break ;
+ break ;
- case 22 : /* "xstaticgray": boolean indicating if the frame buffer configuration's X visual is of type StaticGray */
+ case 22 : /* "xstaticgray": boolean indicating if the frame buffer
+ configuration's X visual is of type StaticGray */
#if TARGET_HOST_UNIX_X11
#endif
- break ;
+ break ;
- case 23 : /* "xgrayscale": boolean indicating if the frame buffer configuration's X visual is of type GrayScale */
+ case 23 : /* "xgrayscale": boolean indicating if the frame buffer
+ configuration's X visual is of type GrayScale */
#if TARGET_HOST_UNIX_X11
#endif
- break ;
+ break ;
- case 24 : /* "xstaticcolor": boolean indicating if the frame buffer configuration's X visual is of type StaticColor */
+ case 24 : /* "xstaticcolor": boolean indicating if the frame buffer
+ configuration's X visual is of type StaticColor */
#if TARGET_HOST_UNIX_X11
#endif
- break ;
+ break ;
- case 25 : /* "xpseudocolor": boolean indicating if the frame buffer configuration's X visual is of type PseudoColor */
+ case 25 : /* "xpseudocolor": boolean indicating if the frame buffer
+ configuration's X visual is of type PseudoColor */
#if TARGET_HOST_UNIX_X11
#endif
- break ;
+ break ;
- case 26 : /* "xtruecolor": boolean indicating if the frame buffer configuration's X visual is of type TrueColor */
+ case 26 : /* "xtruecolor": boolean indicating if the frame buffer
+ configuration's X visual is of type TrueColor */
#if TARGET_HOST_UNIX_X11
#endif
- break ;
+ break ;
- case 27 : /* "xdirectcolor": boolean indicating if the frame buffer configuration's X visual is of type DirectColor */
+ case 27 : /* "xdirectcolor": boolean indicating if the frame buffer
+ configuration's X visual is of type DirectColor */
#if TARGET_HOST_UNIX_X11
#endif
- break ;
+ break ;
- case 28 : /* Unrecognized */
- printf ( "WARNING - Display string token not recognized: %s\n", token ) ;
- break ;
- }
+ case 28 : /* Unrecognized */
+ printf ( "WARNING - Display string token not recognized: %s\n",
+ token );
+ break ;
+ }
- token = strtok ( NULL, " \t" ) ;
- }
+ token = strtok ( NULL, " \t" );
+ }
- free ( buffer ) ;
+ free ( buffer );
- /*
- * We will make use of this value when creating a new OpenGL context...
- */
- fgState.DisplayMode = glut_state_flag;
+ /*
+ * We will make use of this value when creating a new OpenGL context...
+ */
+ fgState.DisplayMode = glut_state_flag;
}
/*** END OF FILE ***/
projects / freeglut / blobdiff