/*
* TODO BEFORE THE STABLE RELEASE:
*
- * It would be cool if the submenu entries were somehow marked, for example with a dings
- * on the right menu border or something like that. Think about the possibility of doing
- * the menu on layers *or* using the native window system instead of OpenGL.
+ * Wouldn't 1.0 have been "the" stable release? Now we are past 2.0,
+ * so this comment is probably just out of date. (20031026; rkr)
+ *
+ * Think about the possibility of doing the menu on layers *or* using the
+ * native window system instead of OpenGL.
*/
/* -- DEFINITIONS ---------------------------------------------------------- */
/*
- * We'll be using freeglut fonts to draw the menu
+ * FREEGLUT_MENU_FONT can be any freeglut bitmapped font.
+ * (Stroked fonts would not be out of the question, but we'd need to alter
+ * code, since GLUT (hence freeglut) does not quite unify stroked and
+ * bitmapped font handling.)
+ * Old UNIX/X11 GLUT (BSD, UNIX, IRIX, LINUX, HPUX, ...) used a system
+ * font best approximated by an 18-pixel HELVETICA, I think. MS-WINDOWS
+ * GLUT used something closest to the 8x13 fixed-width font. (Old
+ * GLUT apparently uses host-system menus rather than building its own.
+ * freeglut is building its own menus from scratch.)
+ *
+ * FREEGLUT_MENU_HEIGHT gives the height of ONE menu box. This should be
+ * the distances between two adjacent menu entries. It should scale
+ * automatically with the font choice, so you needn't alter it---unless you
+ * use a stroked font.
+ *
+ * FREEGLUT_MENU_BORDER says how many pixels to allow around the edge of a
+ * menu. (It also seems to be the same as the number of pixels used as
+ * a border around *items* to separate them from neighbors. John says
+ * that that wasn't the original intent...if not, perhaps we need another
+ * symbolic constant, FREEGLUT_MENU_ITEM_BORDER, or such.)
+ */
+#if TARGET_HOST_WIN32
+#define FREEGLUT_MENU_FONT GLUT_BITMAP_8_BY_13
+#else
+#define FREEGLUT_MENU_FONT GLUT_BITMAP_HELVETICA_18
+#endif
+
+#define FREEGLUT_MENU_HEIGHT (glutBitmapHeight(FREEGLUT_MENU_FONT) + FREEGLUT_MENU_BORDER)
+#define FREEGLUT_MENU_BORDER 2
+
+
+/*
+ * These variables should be moved into the freeglut global state, but for now,
+ * we'll put them here. They are for rendering the freeglut menu items.
+ * The choices are fore- and background, with and without h for Highlighting.
+ * Old GLUT appeared to be system-dependant for its colors (sigh) so we are
+ * too. These variables should be stuffed into global state and initialized
+ * via the glutInit*() system.
*/
-#define FREEGLUT_MENU_FONT GLUT_BITMAP_8_BY_13
-#define FREEGLUT_MENU_HEIGHT 15
-#define FREEGLUT_MENU_BORDER 8
+
+#if TARGET_HOST_WIN32
+static float menu_pen_fore [4] = {0.0f, 0.0f, 0.0f, 1.0f};
+static float menu_pen_back [4] = {0.85f, 0.85f, 0.85f, 1.0f};
+static float menu_pen_hfore [4] = {1.0f, 1.0f, 1.0f, 1.0f};
+static float menu_pen_hback [4] = {0.15f, 0.15f, 0.45f, 1.0f};
+#else
+static float menu_pen_fore [4] = {0.0f, 0.0f, 0.0f, 1.0f};
+static float menu_pen_back [4] = {0.70f, 0.70f, 0.70f, 1.0f};
+static float menu_pen_hfore [4] = {0.0f, 0.0f, 0.0f, 1.0f};
+static float menu_pen_hback [4] = {1.0f, 1.0f, 1.0f, 1.0f};
+#endif
/* -- PRIVATE FUNCTIONS ---------------------------------------------------- */
/*
- * Private static function to find a menu entry by index
+ * Private function to find a menu entry by index
*/
static SFG_MenuEntry *fghFindMenuEntry( SFG_Menu* menu, int index )
{
SFG_MenuEntry *entry;
int i = 1;
- for( entry = menu->Entries.First; entry; entry = entry->Node.Next)
+ for( entry = (SFG_MenuEntry *)menu->Entries.First; entry; entry = (SFG_MenuEntry *)entry->Node.Next)
{
if (i == index)
break;
}
/*
- * Private static function to check for the current menu/sub menu activity state
+ * Private function to check for the current menu/sub menu activity state
*/
static GLboolean fghCheckMenuStatus( SFG_Window* window, SFG_Menu* menu )
{
/*
* First of all check any of the active sub menus...
*/
- for( menuEntry = menu->Entries.First; menuEntry;
- menuEntry = menuEntry->Node.Next )
+ for( menuEntry = (SFG_MenuEntry *)menu->Entries.First; menuEntry;
+ menuEntry = (SFG_MenuEntry *)menuEntry->Node.Next )
{
- /*
- * Is that an active sub menu by any case?
- */
if( menuEntry->SubMenu != NULL && menuEntry->IsActive == TRUE )
{
/*
GLboolean return_status = fghCheckMenuStatus( window, menuEntry->SubMenu ) ;
/*
- * Reactivate the submenu as the checkMenuStatus may have turned it off if the mouse
- * is in its parent menu entry.
+ * Reactivate the submenu as the checkMenuStatus may have turned it off
+ * if the mouse is in its parent menu entry.
*/
menuEntry->SubMenu->IsActive = TRUE ;
if ( return_status == TRUE )
x = window->State.MouseX;
y = window->State.MouseY;
- /*
- * Mark all menu entries inactive...
- */
- for( menuEntry = menu->Entries.First; menuEntry;
- menuEntry = menuEntry->Node.Next )
+ for( menuEntry = (SFG_MenuEntry *)menu->Entries.First; menuEntry;
+ menuEntry = (SFG_MenuEntry *)menuEntry->Node.Next )
{
menuEntry->IsActive = FALSE;
}
/*
* Check if the mouse cursor is contained within the current menu box
*/
- if ( ( x >= 0 ) && ( x < menu->Width ) && ( y >= 0 ) && ( y < menu->Height ) && ( window == menu->Window ) )
+ if( ( x >= FREEGLUT_MENU_BORDER ) &&
+ ( x < menu->Width - FREEGLUT_MENU_BORDER ) &&
+ ( y >= FREEGLUT_MENU_BORDER ) &&
+ ( y < menu->Height - FREEGLUT_MENU_BORDER ) &&
+ ( window == menu->Window ) )
{
- /*
- * Calculation of the highlighted menu item is easy enough now:
- */
- int menuID = y / FREEGLUT_MENU_HEIGHT;
+ int menuID = ( y - FREEGLUT_MENU_BORDER ) / FREEGLUT_MENU_HEIGHT ;
/*
* The mouse cursor is somewhere over our box, check it out.
menuEntry = fghFindMenuEntry( menu, menuID + 1 );
assert( menuEntry != NULL );
- /*
- * Mark the menu as active...
- */
menuEntry->IsActive = TRUE;
menuEntry->Ordinal = menuID;
/*
- * If this is not the same as the last active menu entry, deactivate the previous entry.
- * Specifically, if the previous active entry was a submenu then deactivate it.
+ * If this is not the same as the last active menu entry, deactivate the
+ * previous entry. Specifically, if the previous active entry was a
+ * submenu then deactivate it.
*/
if ( menu->ActiveEntry && ( menuEntry != menu->ActiveEntry ) )
{
}
menu->ActiveEntry = menuEntry ;
-
- /*
- * Don't forget about marking the current menu as active, too:
- */
-
menu->IsActive = TRUE;
/*
* Set up the initial menu position now...
*/
- /*
- * Mark the menu as active, so that it gets displayed:
- */
menuEntry->SubMenu->IsActive = TRUE ;
/*
menuEntry->SubMenu->X = menu->X + menu->Width ;
menuEntry->SubMenu->Y = menu->Y + menuEntry->Ordinal * FREEGLUT_MENU_HEIGHT ;
+ if ( menuEntry->SubMenu->X + menuEntry->SubMenu->Width > glutGet (GLUT_SCREEN_WIDTH ) )
+ menuEntry->SubMenu->X = menu->X - menuEntry->SubMenu->Width;
+
+ if ( menuEntry->SubMenu->Y + menuEntry->SubMenu->Height > glutGet (GLUT_SCREEN_HEIGHT ) )
+ menuEntry->SubMenu->Y -= (menuEntry->SubMenu->Height -
+ FREEGLUT_MENU_HEIGHT - 2*FREEGLUT_MENU_BORDER);
+
fgSetWindow ( menuEntry->SubMenu->Window ) ;
glutPositionWindow ( menuEntry->SubMenu->X, menuEntry->SubMenu->Y ) ;
glutReshapeWindow ( menuEntry->SubMenu->Width, menuEntry->SubMenu->Height ) ;
fgSetWindow ( current_window ) ;
}
- /*
- * ...then check the submenu's state:
- */
fghCheckMenuStatus( window, menuEntry->SubMenu );
/*
- * Even if the submenu turned up inactive, activate it because its parent entry is active
+ * Activate it because its parent entry is active
*/
menuEntry->SubMenu->IsActive = TRUE ;
}
{
SFG_MenuEntry *menuEntry;
int i;
+ int border = FREEGLUT_MENU_BORDER ;
/*
* Have the menu box drawn first. The +- values are
* here just to make it more nice-looking...
*/
- glColor4f( 0.1289f, 0.2257f, 0.28516f, 1.0f ); /* a non-black dark version of the below. */
- glBegin( GL_QUADS );
- glVertex2i( 0 , 0 );
- glVertex2i( menu->Width, 0 );
- glVertex2i( menu->Width, menu->Height );
- glVertex2i( 0 , menu->Height );
+ glColor4f( 1.0f, 1.0f, 1.0f, 1.0f ); /* a non-black dark version of the below. */
+ glBegin( GL_QUAD_STRIP );
+ glVertex2i( menu->Width , 0 );
+ glVertex2i( menu->Width-border, border);
+ glVertex2i( 0 , 0 );
+ glVertex2i( border, border);
+ glVertex2i( 0 , menu->Height );
+ glVertex2i( border, menu->Height-border);
+ glEnd();
+
+ glColor4f( 0.5f, 0.5f, 0.5f, 1.0f ); /* a non-black dark version of the below. */
+ glBegin( GL_QUAD_STRIP );
+ glVertex2i( 0 , menu->Height );
+ glVertex2i( border, menu->Height-border);
+ glVertex2i( menu->Width , menu->Height );
+ glVertex2i( menu->Width-border, menu->Height-border);
+ glVertex2i( menu->Width , 0 );
+ glVertex2i( menu->Width-border, border);
glEnd();
- glColor4f( 0.3f, 0.4f, 0.5f, 1.0f );
+ glColor4fv ( menu_pen_back ) ;
glBegin( GL_QUADS );
- glVertex2i( 1, 1 );
- glVertex2i( menu->Width-1, 1 );
- glVertex2i( menu->Width-1, menu->Height-1);
- glVertex2i( 1, menu->Height-1);
+ glVertex2i( border, border);
+ glVertex2i( menu->Width-border, border);
+ glVertex2i( menu->Width-border, menu->Height-border);
+ glVertex2i( border, menu->Height-border);
glEnd();
/*
* Check if any of the submenus is currently active...
*/
- for( menuEntry = menu->Entries.First; menuEntry;
- menuEntry = menuEntry->Node.Next )
+ for( menuEntry = (SFG_MenuEntry *)menu->Entries.First; menuEntry;
+ menuEntry = (SFG_MenuEntry *)menuEntry->Node.Next )
{
/*
* Has the menu been marked as active, maybe?
/*
* So have the highlight drawn...
*/
- glColor4f( 0.2f, 0.3f, 0.4f, 1.0f );
+ glColor4fv ( menu_pen_hback ) ;
glBegin( GL_QUADS );
- glVertex2i( 2 , (menuID + 0)*FREEGLUT_MENU_HEIGHT + 1 );
- glVertex2i( menu->Width-2, (menuID + 0)*FREEGLUT_MENU_HEIGHT + 1 );
- glVertex2i( menu->Width-2, (menuID + 1)*FREEGLUT_MENU_HEIGHT + 2 );
- glVertex2i( 2 , (menuID + 1)*FREEGLUT_MENU_HEIGHT + 2 );
+ glVertex2i( FREEGLUT_MENU_BORDER, (menuID + 0)*FREEGLUT_MENU_HEIGHT + FREEGLUT_MENU_BORDER );
+ glVertex2i( menu->Width-FREEGLUT_MENU_BORDER, (menuID + 0)*FREEGLUT_MENU_HEIGHT + FREEGLUT_MENU_BORDER );
+ glVertex2i( menu->Width-FREEGLUT_MENU_BORDER, (menuID + 1)*FREEGLUT_MENU_HEIGHT + FREEGLUT_MENU_BORDER );
+ glVertex2i( FREEGLUT_MENU_BORDER, (menuID + 1)*FREEGLUT_MENU_HEIGHT + FREEGLUT_MENU_BORDER );
glEnd();
}
}
/*
* Print the menu entries now...
*/
- glColor4f( 1, 1, 1, 1 );
- for( menuEntry = menu->Entries.First, i=0; menuEntry;
- menuEntry = menuEntry->Node.Next, ++i )
+ glColor4fv ( menu_pen_fore );
+
+ for( menuEntry = (SFG_MenuEntry *)menu->Entries.First, i=0; menuEntry;
+ menuEntry = (SFG_MenuEntry *)menuEntry->Node.Next, ++i )
{
/*
+ * If the menu entry is active, set the color to white
+ */
+ if ( menuEntry->IsActive )
+ glColor4fv ( menu_pen_hfore ) ;
+
+ /*
* Move the raster into position...
*/
glRasterPos2i(
- FREEGLUT_MENU_BORDER,
- (i + 1)*FREEGLUT_MENU_HEIGHT-(int)(FREEGLUT_MENU_HEIGHT*0.3) /* Try to center the text - JCJ 31 July 2003*/
+ 2 * FREEGLUT_MENU_BORDER,
+ (i + 1)*FREEGLUT_MENU_HEIGHT-(int)(FREEGLUT_MENU_HEIGHT*0.3 - FREEGLUT_MENU_BORDER ) /* Try to center the text - JCJ 31 July 2003*/
);
/*
*/
if ( menuEntry->SubMenu != NULL )
{
- GLubyte arrow_char [] = { 0, 0, 32, 48, 56, 60, 62, 63, 62, 60, 56, 48, 32, 0, 0 } ;
- int width = glutBitmapWidth ( FREEGLUT_MENU_FONT, ' ' ) ;
-
- glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT );
-
- /*
- * Set up the pixel unpacking ways
- */
- glPixelStorei( GL_UNPACK_SWAP_BYTES, GL_FALSE );
- glPixelStorei( GL_UNPACK_LSB_FIRST, GL_FALSE );
- glPixelStorei( GL_UNPACK_ROW_LENGTH, 0 );
- glPixelStorei( GL_UNPACK_SKIP_ROWS, 0 );
- glPixelStorei( GL_UNPACK_SKIP_PIXELS, 0 );
- glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
-
- glRasterPos2i ( menu->Width - 2 - width,
- (i + 1)*FREEGLUT_MENU_HEIGHT ) ;
- glBitmap ( width, FREEGLUT_MENU_HEIGHT, 0, 0, 0.0, 0.0, arrow_char ) ;
- glPopClientAttrib();
+ int width = glutBitmapWidth ( FREEGLUT_MENU_FONT, '_' ) ;
+ int x_base = menu->Width - 2 - width;
+ int y_base = i*FREEGLUT_MENU_HEIGHT + FREEGLUT_MENU_BORDER;
+ glBegin( GL_TRIANGLES );
+ glVertex2i( x_base, y_base + 2*FREEGLUT_MENU_BORDER);
+ glVertex2i( menu->Width - 2, y_base + (FREEGLUT_MENU_HEIGHT + FREEGLUT_MENU_BORDER) / 2 );
+ glVertex2i( x_base, y_base + FREEGLUT_MENU_HEIGHT - FREEGLUT_MENU_BORDER);
+ glEnd( );
}
+
+ /*
+ * If the menu entry is active, reset the color
+ */
+ if ( menuEntry->IsActive )
+ glColor4fv ( menu_pen_fore ) ;
}
/*
* Now we are ready to check if any of our children needs to be redrawn:
*/
- for( menuEntry = menu->Entries.First; menuEntry;
- menuEntry = menuEntry->Node.Next )
+ for( menuEntry = (SFG_MenuEntry *)menu->Entries.First; menuEntry;
+ menuEntry = (SFG_MenuEntry *)menuEntry->Node.Next )
{
/*
* Is that an active sub menu by any case?
menu->ParentWindow = window ;
- for ( menuEntry = menu->Entries.First; menuEntry; menuEntry = menuEntry->Node.Next )
+ for ( menuEntry = (SFG_MenuEntry *)menu->Entries.First; menuEntry; menuEntry = (SFG_MenuEntry *)menuEntry->Node.Next )
{
if ( menuEntry->SubMenu != NULL )
fghSetSubmenuParentWindow ( window, menuEntry->SubMenu ) ;
menu->X = window->State.MouseX + glutGet ( GLUT_WINDOW_X ) ;
menu->Y = window->State.MouseY + glutGet ( GLUT_WINDOW_Y ) ;
+ if ( menu->X + menu->Width > glutGet ( GLUT_SCREEN_WIDTH ) )
+ menu->X -=menu->Width ;
+
+ if ( menu->Y + menu->Height > glutGet ( GLUT_SCREEN_HEIGHT ) )
+ menu->Y -=menu->Height ;
+
fgSetWindow ( menu->Window ) ;
glutPositionWindow ( menu->X, menu->Y ) ;
glutReshapeWindow ( menu->Width, menu->Height ) ;
glutShowWindow () ;
menu->Window->ActiveMenu = menu ;
-/* if( x > ( glutGet( GLUT_WINDOW_WIDTH ) - menu->Width ) )
- menu->X = glutGet( GLUT_WINDOW_WIDTH ) - menu->Width;
- if( y > ( glutGet( GLUT_WINDOW_HEIGHT ) - menu->Height) )
- menu->Y = glutGet( GLUT_WINDOW_HEIGHT ) - menu->Height; */
}
/*
/*
* First of all check any of the active sub menus...
*/
- for( menuEntry = menu->Entries.First; menuEntry; menuEntry = menuEntry->Node.Next)
+ for( menuEntry = (SFG_MenuEntry *)menu->Entries.First; menuEntry; menuEntry = (SFG_MenuEntry *)menuEntry->Node.Next)
{
/*
* Is this menu entry active?
/*
* Hide all submenu windows, and the root menu's window.
*/
- for ( menuEntry = menu->Entries.First; menuEntry;
- menuEntry = menuEntry->Node.Next )
+ for ( menuEntry = (SFG_MenuEntry *)menu->Entries.First; menuEntry;
+ menuEntry = (SFG_MenuEntry *)menuEntry->Node.Next )
{
/*
* Is that an active submenu by any case?
*/
- if ( ( menuEntry->SubMenu != NULL ) && menuEntry->SubMenu->IsActive )
+ if ( menuEntry->SubMenu != NULL )
fgDeactivateSubMenu ( menuEntry ) ;
}
- fgStructure.Window = current_window ;
+ fgSetWindow ( current_window ) ;
}
/*
/*
* Hide all submenu windows, and the root menu's window.
*/
- for ( subMenuIter = menuEntry->SubMenu->Entries.First; subMenuIter;
- subMenuIter = subMenuIter->Node.Next )
+ for ( subMenuIter = (SFG_MenuEntry *)menuEntry->SubMenu->Entries.First; subMenuIter;
+ subMenuIter = (SFG_MenuEntry *)subMenuIter->Node.Next )
{
/*
* Is that an active submenu by any case?
*/
- if ( ( subMenuIter->SubMenu != NULL ) && subMenuIter->SubMenu->IsActive )
+ if ( subMenuIter->SubMenu != NULL )
fgDeactivateSubMenu ( subMenuIter ) ;
}
- fgStructure.Window = current_window ;
+ fgSetWindow ( current_window ) ;
}
/*
/*
* The menu's box size depends on the menu entries:
*/
- for( menuEntry = fgStructure.Menu->Entries.First; menuEntry;
- menuEntry = menuEntry->Node.Next)
+ for( menuEntry = (SFG_MenuEntry *)fgStructure.Menu->Entries.First; menuEntry;
+ menuEntry = (SFG_MenuEntry *)menuEntry->Node.Next)
{
/*
* Update the menu entry's width value
*/
if (menuEntry->SubMenu != NULL)
- menuEntry->Width += glutBitmapLength( FREEGLUT_MENU_FONT, " " );
+ menuEntry->Width += glutBitmapLength( FREEGLUT_MENU_FONT, "_" );
/*
* Check if it's the biggest we've found
/*
* Store the menu's box size now:
*/
- fgStructure.Menu->Height = height;
- fgStructure.Menu->Width = width + 2 * FREEGLUT_MENU_BORDER ;
+ fgStructure.Menu->Height = height + 2 * FREEGLUT_MENU_BORDER ;
+ fgStructure.Menu->Width = width + 4 * FREEGLUT_MENU_BORDER ;
}
*/
void FGAPIENTRY glutAddMenuEntry( const char* label, int value )
{
- SFG_MenuEntry* menuEntry = calloc( sizeof(SFG_MenuEntry), 1 );
+ SFG_MenuEntry* menuEntry = (SFG_MenuEntry *)calloc( sizeof(SFG_MenuEntry), 1 );
/*
* Make sure there is a current menu set
*/
void FGAPIENTRY glutAddSubMenu( const char* label, int subMenuID )
{
- SFG_MenuEntry* menuEntry = calloc( sizeof(SFG_MenuEntry), 1 );
+ SFG_MenuEntry* menuEntry = (SFG_MenuEntry *)calloc( sizeof(SFG_MenuEntry), 1 );
SFG_Menu* subMenu = fgMenuByID( subMenuID );
/*
void FGAPIENTRY glutAttachMenu( int button )
{
freeglut_assert_ready;
-
- /*
- * There must be a current window and a current menu set:
- */
- freeglut_return_if_fail( fgStructure.Window != NULL || fgStructure.Menu != NULL );
-
- /*
- * Make sure the button value is valid (0, 1 or 2, see freeglut.h)
- */
- freeglut_return_if_fail( button == GLUT_LEFT_BUTTON || button == GLUT_MIDDLE_BUTTON || button == GLUT_RIGHT_BUTTON );
-
- /*
- * It is safe now to attach the menu
- */
+ freeglut_return_if_fail( fgStructure.Window );
+ freeglut_return_if_fail( fgStructure.Menu );
+ freeglut_return_if_fail( button >= 0 );
+ freeglut_return_if_fail( button < FREEGLUT_MAX_MENUS );
fgStructure.Window->Menu[ button ] = fgStructure.Menu;
/*
void FGAPIENTRY glutDetachMenu( int button )
{
freeglut_assert_ready;
-
- /*
- * There must be a current window set:
- */
freeglut_return_if_fail( fgStructure.Window != NULL );
-
- /*
- * Make sure the button value is valid (0, 1 or 2, see freeglut.h)
- */
- freeglut_return_if_fail( button != 0 && button != 1 && button != 2 );
-
- /*
- * It is safe now to detach the menu
- */
+ freeglut_return_if_fail( fgStructure.Menu );
+ freeglut_return_if_fail( button >= 0 );
+ freeglut_return_if_fail( button < FREEGLUT_MAX_MENUS );
fgStructure.Window->Menu[ button ] = NULL;
}
projects / freeglut / blobdiff