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Deleted some say-nothing-new comments.

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Added some XXX's where comments seemed to require future attention.

Added some new comments with XXX's where future attention seems profitable.


git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@261 7f0cb862-5218-0410-a997-914c9d46530a
This commit is contained in:
rkrolib 2003-10-29 07:49:59 +00:00
parent 4078f9a7a9
commit faf725fe15
1 changed files with 48 additions and 127 deletions
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167
freeglut/freeglut/src/freeglut_state.c
View File

@ -77,7 +77,7 @@ void FGAPIENTRY glutSetOption( GLenum eWhat, int value )
freeglut_assert_ready;
/*
* Check what is the caller querying for. In chronological code add order.
* XXX In chronological code add order. (WHY in that order?)
*/
switch( eWhat )
{
@ -116,9 +116,6 @@ void FGAPIENTRY glutSetOption( GLenum eWhat, int value )
break;
default:
/*
* Just have it reported, so that we can see what needs to be implemented
*/
fgWarning( "glutSetOption(): missing enum handle %i\n", eWhat );
break;
}
@ -138,14 +135,11 @@ int FGAPIENTRY glutGet( GLenum eWhat )
freeglut_assert_ready;
/*
* Check what is the caller querying for. In chronological code add order.
* XXX In chronological code add order. (WHY in that order?)
*/
switch( eWhat )
{
case GLUT_ELAPSED_TIME:
/*
* This is easy and nicely portable, as we are using GLib...
*/
return( fgElapsedTime() );
/*
@ -162,17 +156,19 @@ int FGAPIENTRY glutGet( GLenum eWhat )
case GLUT_INIT_DISPLAY_MODE: return( fgState.DisplayMode );
/*
* The window/context specific queries are handled mostly by fghGetConfig().
* The window/context specific queries are handled mostly by
* fghGetConfig().
*/
case GLUT_WINDOW_NUM_SAMPLES:
/*
* Multisampling. Return what I know about multisampling.
* XXX Multisampling. Return what I know about multisampling.
*/
return( 0 );
#if TARGET_HOST_UNIX_X11
/*
* The rest of GLX queries under X are general enough to use a macro to check them
* 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 ) );
@ -197,9 +193,6 @@ int FGAPIENTRY glutGet( GLenum eWhat )
* Colormap size is handled in a bit different way than all the rest
*/
case GLUT_WINDOW_COLORMAP_SIZE:
/*
* Check for the visual type
*/
if( (fghGetConfig( GLX_RGBA )) || (fgStructure.Window == NULL) )
{
/*
@ -208,14 +201,11 @@ int FGAPIENTRY glutGet( GLenum eWhat )
*/
return( 0 );
}
/*
* Otherwise return the number of entries in the colormap
*/
return( fgStructure.Window->Window.VisualInfo->visual->map_entries );
/*
* Those calls are somewhat similiar, as they use XGetWindowAttributes() function
* Those calls are somewhat similiar, as they use XGetWindowAttributes()
* function
*/
case GLUT_WINDOW_X:
case GLUT_WINDOW_Y:
@ -241,8 +231,7 @@ int FGAPIENTRY glutGet( GLenum eWhat )
}
if ( w == 0 )
return( 0 ); /* Just in case */
return( 0 );
XTranslateCoordinates(
fgDisplay.Display,
fgStructure.Window->Window.Handle,
@ -260,24 +249,13 @@ int FGAPIENTRY glutGet( GLenum eWhat )
{
XWindowAttributes winAttributes;
/*
* Return zero if there is no current window set
*/
if( fgStructure.Window == NULL )
return( 0 );
/*
* Grab the current window's attributes now
*/
XGetWindowAttributes(
fgDisplay.Display,
fgStructure.Window->Window.Handle,
&winAttributes
);
/*
* See which window attribute to return
*/
switch ( eWhat )
{
case GLUT_WINDOW_WIDTH: return winAttributes.width ;
@ -289,18 +267,12 @@ int FGAPIENTRY glutGet( GLenum eWhat )
* I do not know yet if there will be a fgChooseVisual() function for Win32
*/
case GLUT_DISPLAY_MODE_POSSIBLE:
/*
* Check if the current display mode is possible
*/
return( fgChooseVisual() == NULL ? 0 : 1 );
/*
* This is system-dependant
*/
case GLUT_WINDOW_FORMAT_ID:
/*
* Return the visual ID, if there is a current window naturally:
*/
if( fgStructure.Window == NULL )
return( 0 );
@ -359,9 +331,6 @@ int FGAPIENTRY glutGet( GLenum eWhat )
returnValue = 0 ; /* ????? */
return ( returnValue ) ;
/*
* Window position and size
*/
case GLUT_WINDOW_X:
case GLUT_WINDOW_Y:
case GLUT_WINDOW_WIDTH:
@ -435,10 +404,6 @@ int FGAPIENTRY glutGet( GLenum eWhat )
case GLUT_WINDOW_FORMAT_ID:
if( fgStructure.Window != NULL )
return( GetPixelFormat( fgStructure.Window->Window.Device ) );
/*
* If the current window does not exist, fail:
*/
return( 0 );
#endif
@ -447,39 +412,23 @@ int FGAPIENTRY glutGet( GLenum eWhat )
* The window structure queries
*/
case GLUT_WINDOW_PARENT:
/*
* Return the ID number of current window's parent, if any
*/
if( fgStructure.Window == NULL ) return( 0 );
if( fgStructure.Window->Parent == NULL ) return( 0 );
return( fgStructure.Window->Parent->ID );
case GLUT_WINDOW_NUM_CHILDREN:
/*
* Return the number of children attached to the current window
*/
if( fgStructure.Window == NULL )
return( 0 );
return( fgListLength( &fgStructure.Window->Children ) );
case GLUT_WINDOW_CURSOR:
/*
* Return the currently selected window cursor
*/
if( fgStructure.Window == NULL )
return( 0 );
return( fgStructure.Window->State.Cursor );
case GLUT_MENU_NUM_ITEMS:
/*
* Return the number of menu entries in the current menu
*/
if( fgStructure.Menu == NULL )
return( 0 );
return( fgListLength( &fgStructure.Menu->Entries ) );
case GLUT_ACTION_ON_WINDOW_CLOSE:
@ -492,16 +441,9 @@ int FGAPIENTRY glutGet( GLenum eWhat )
return ( fgState.UseCurrentContext ? GLUT_USE_CURRENT_CONTEXT : GLUT_CREATE_NEW_CONTEXT ) ;
default:
/*
* Just have it reported, so that we can see what needs to be implemented
*/
fgWarning( "glutGet(): missing enum handle %i\n", eWhat );
break;
}
/*
* If nothing happens, then we are in deep trouble...
*/
return( -1 );
}
@ -513,29 +455,46 @@ int FGAPIENTRY glutDeviceGet( GLenum eWhat )
freeglut_assert_ready;
/*
* See why are we bothered...
*
* WARNING: we are mostly lying in this function.
* XXX WARNING: we are mostly lying in this function.
*/
switch( eWhat )
{
case GLUT_HAS_KEYBOARD:
/*
* We always have a keyboard present on PC machines...
*
* XXX I think that some of my PCs will boot without a keyboard.
* XXX Also, who says that we are running on a PC? UNIX/X11
* XXX is much more generic, and X11 can go over a network.
* XXX Though in actuality, we can probably assume BOTH a
* XXX mouse and keyboard for most/all of our users.
*/
return( TRUE );
#if TARGET_HOST_UNIX_X11
case GLUT_HAS_MOUSE:
/*
* Hey, my Atari 65XE hasn't had a mouse!
*/
return( TRUE );
case GLUT_NUM_MOUSE_BUTTONS:
/*
* Return the number of mouse buttons available. This is a big guess.
*
* XXX We can probe /var/run/dmesg.boot which is world-readable.
* XXX This would be somewhat system-dependant, but is doable.
* XXX E.g., on NetBSD, my USB mouse registers:
* XXX ums0 at uhidev0: 3 buttons and Z dir.
* XXX We can also probe /var/log/XFree86\..*\.log to get
* XXX lines such as:
* XXX (**) Option "Buttons" "5"
* XXX (**) Option "ZAxisMapping" "4 5"
* XXX (**) Mouse0: ZAxisMapping: buttons 4 and 5
* XXX (**) Mouse0: Buttons: 5
* XXX ...which tells us even more, and is a bit less
* XXX system-dependant. (Other than MS-WINDOWS, all
* XXX target hosts with actual users are probably running
* XXX XFree86...) It is at least worth taking a look at
* XXX this file.
*/
return( 3 );
@ -561,43 +520,31 @@ int FGAPIENTRY glutDeviceGet( GLenum eWhat )
case GLUT_JOYSTICK_BUTTONS:
case GLUT_JOYSTICK_AXES:
/*
* WARNING: THIS IS A BIG LIE!
* XXX WARNING: THIS IS A BIG LIE!
*/
return( 0 );
case GLUT_HAS_SPACEBALL:
case GLUT_HAS_DIAL_AND_BUTTON_BOX:
case GLUT_HAS_TABLET:
/*
* Sounds cool. And unuseful.
*/
return( FALSE );
case GLUT_NUM_SPACEBALL_BUTTONS:
case GLUT_NUM_BUTTON_BOX_BUTTONS:
case GLUT_NUM_DIALS:
case GLUT_NUM_TABLET_BUTTONS:
/*
* Zero is not the answer. Zero is the question. Continuum is the answer.
*/
return( 0 );
case GLUT_DEVICE_IGNORE_KEY_REPEAT:
/*
* Return what we think about the key auto repeat settings
*/
return( fgState.IgnoreKeyRepeat );
case GLUT_DEVICE_KEY_REPEAT:
/*
* WARNING: THIS IS A BIG LIE!
* XXX WARNING: THIS IS A BIG LIE!
*/
return( GLUT_KEY_REPEAT_DEFAULT );
default:
/*
* Complain.
*/
fgWarning( "glutDeviceGet(): missing enum handle %i\n", eWhat );
break;
}
@ -613,9 +560,6 @@ int FGAPIENTRY glutDeviceGet( GLenum eWhat )
*/
int FGAPIENTRY glutGetModifiers( void )
{
/*
* Fail if there is no current window or called outside an input callback
*/
if( fgStructure.Window == NULL )
return( 0 );
@ -625,9 +569,6 @@ int FGAPIENTRY glutGetModifiers( void )
return( 0 );
}
/*
* Return the current modifiers state otherwise
*/
return( fgStructure.Window->State.Modifiers );
}
@ -640,6 +581,9 @@ int FGAPIENTRY glutLayerGet( 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 )
{
@ -647,85 +591,62 @@ int FGAPIENTRY glutLayerGet( GLenum eWhat )
#if TARGET_HOST_UNIX_X11
case GLUT_OVERLAY_POSSIBLE:
/*
* Nope, overlays are not possible.
*/
return( FALSE );
case GLUT_LAYER_IN_USE:
/*
* The normal plane is always in use
*/
return( GLUT_NORMAL );
case GLUT_HAS_OVERLAY:
/*
* No window is allowed to have an overlay
*/
return( FALSE );
case GLUT_TRANSPARENT_INDEX:
/*
* Return just anything, which is always defined as zero
*
* XXX HUH?
*/
return( 0 );
case GLUT_NORMAL_DAMAGED:
/*
* Actually I do not know. Maybe.
* XXX Actually I do not know. Maybe.
*/
return( FALSE );
case GLUT_OVERLAY_DAMAGED:
/*
* Return minus one to mark that no layer is in use
*/
return( -1 );
#elif TARGET_HOST_WIN32
case GLUT_OVERLAY_POSSIBLE:
/*
* Check if an overlay display mode is possible
*/
/* return( fgSetupPixelFormat( fgStructure.Window, TRUE, PFD_OVERLAY_PLANE ) ); */
return FALSE ;
case GLUT_LAYER_IN_USE:
/*
* The normal plane is always in use
*/
return( GLUT_NORMAL );
case GLUT_HAS_OVERLAY:
/*
* No window is allowed to have an overlay
*/
return( FALSE );
case GLUT_TRANSPARENT_INDEX:
/*
* Return just anything, which is always defined as zero
*
* XXX HUH?
*/
return( 0 );
case GLUT_NORMAL_DAMAGED:
/*
* Actually I do not know. Maybe.
* XXX Actually I do not know. Maybe.
*/
return( FALSE );
case GLUT_OVERLAY_DAMAGED:
/*
* Return minus one to mark that no layer is in use
*/
return( -1 );
#endif
default:
/*
* Complain to the user about the obvious bug
*/
fgWarning( "glutLayerGet(): missing enum handle %i\n", eWhat );
break;
}