X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2FCommon%2Ffreeglut_font.c;h=e956d5b059d151b66725651d9cd095726d10fe08;hb=1ede9f68f98e29ddd07bd466310967e716bfac92;hp=576a72420178207094c09d341e3bb8671624e1cf;hpb=d2f7ea29ea6d946f455f4363c3f058ff2bdfba35;p=freeglut diff --git a/src/Common/freeglut_font.c b/src/Common/freeglut_font.c index 576a724..e956d5b 100644 --- a/src/Common/freeglut_font.c +++ b/src/Common/freeglut_font.c @@ -1,384 +1,384 @@ -/* - * freeglut_font.c - * - * Bitmap and stroke fonts displaying. - * - * 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: - * - * Test things out ... - */ - -/* -- IMPORT DECLARATIONS -------------------------------------------------- */ - -/* - * These are the font faces defined in freeglut_font_data.c file: - */ -extern SFG_Font fgFontFixed8x13; -extern SFG_Font fgFontFixed9x15; -extern SFG_Font fgFontHelvetica10; -extern SFG_Font fgFontHelvetica12; -extern SFG_Font fgFontHelvetica18; -extern SFG_Font fgFontTimesRoman10; -extern SFG_Font fgFontTimesRoman24; -extern SFG_StrokeFont fgStrokeRoman; -extern SFG_StrokeFont fgStrokeMonoRoman; - - -/* -- PRIVATE FUNCTIONS ---------------------------------------------------- */ - -/* - * Matches a font ID with a SFG_Font structure pointer. - * This was changed to match the GLUT header style. - */ -static SFG_Font* fghFontByID( void* font ) -{ - if( font == GLUT_BITMAP_8_BY_13 ) - return &fgFontFixed8x13; - if( font == GLUT_BITMAP_9_BY_15 ) - return &fgFontFixed9x15; - if( font == GLUT_BITMAP_HELVETICA_10 ) - return &fgFontHelvetica10; - if( font == GLUT_BITMAP_HELVETICA_12 ) - return &fgFontHelvetica12; - if( font == GLUT_BITMAP_HELVETICA_18 ) - return &fgFontHelvetica18; - if( font == GLUT_BITMAP_TIMES_ROMAN_10 ) - return &fgFontTimesRoman10; - if( font == GLUT_BITMAP_TIMES_ROMAN_24 ) - return &fgFontTimesRoman24; - - fgWarning( "font 0x%08x not found", font ); - return 0; -} - -/* - * Matches a font ID with a SFG_StrokeFont structure pointer. - * This was changed to match the GLUT header style. - */ -static SFG_StrokeFont* fghStrokeByID( void* font ) -{ - if( font == GLUT_STROKE_ROMAN ) - return &fgStrokeRoman; - if( font == GLUT_STROKE_MONO_ROMAN ) - return &fgStrokeMonoRoman; - - fgWarning( "stroke font 0x%08x not found", font ); - return 0; -} - - -/* -- INTERFACE FUNCTIONS -------------------------------------------------- */ - -/* - * Draw a bitmap character - */ -void FGAPIENTRY glutBitmapCharacter( void* fontID, int character ) -{ - const GLubyte* face; - SFG_Font* font; - FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutBitmapCharacter" ); - font = fghFontByID( fontID ); - freeglut_return_if_fail( ( character >= 1 )&&( character < 256 ) ); - freeglut_return_if_fail( font ); - - /* - * Find the character we want to draw (???) - */ - face = font->Characters[ character ]; - - glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT ); - 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 ); - glBitmap( - face[ 0 ], font->Height, /* The bitmap's width and height */ - font->xorig, font->yorig, /* The origin in the font glyph */ - ( float )( face[ 0 ] ), 0.0, /* The raster advance -- inc. x,y */ - ( face + 1 ) /* The packed bitmap data... */ - ); - glPopClientAttrib( ); -} - -void FGAPIENTRY glutBitmapString( void* fontID, const unsigned char *string ) -{ - unsigned char c; - float x = 0.0f ; - SFG_Font* font; - FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutBitmapString" ); - font = fghFontByID( fontID ); - freeglut_return_if_fail( font ); - if ( !string || ! *string ) - return; - - glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT ); - 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 ); - - /* - * Step through the string, drawing each character. - * A newline will simply translate the next character's insertion - * point back to the start of the line and down one line. - */ - while( ( c = *string++) ) - if( c == '\n' ) - { - glBitmap ( 0, 0, 0, 0, -x, (float) -font->Height, NULL ); - x = 0.0f; - } - else /* Not an EOL, draw the bitmap character */ - { - const GLubyte* face = font->Characters[ c ]; - - glBitmap( - face[ 0 ], font->Height, /* Bitmap's width and height */ - font->xorig, font->yorig, /* The origin in the font glyph */ - ( float )( face[ 0 ] ), 0.0, /* The raster advance; inc. x,y */ - ( face + 1 ) /* The packed bitmap data... */ - ); - - x += ( float )( face[ 0 ] ); - } - - glPopClientAttrib( ); -} - -/* - * Returns the width in pixels of a font's character - */ -int FGAPIENTRY glutBitmapWidth( void* fontID, int character ) -{ - SFG_Font* font; - FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutBitmapWidth" ); - font = fghFontByID( fontID ); - freeglut_return_val_if_fail( character > 0 && character < 256, 0 ); - freeglut_return_val_if_fail( font, 0 ); - return *( font->Characters[ character ] ); -} - -/* - * Return the width of a string drawn using a bitmap font - */ -int FGAPIENTRY glutBitmapLength( void* fontID, const unsigned char* string ) -{ - unsigned char c; - int length = 0, this_line_length = 0; - SFG_Font* font; - FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutBitmapLength" ); - font = fghFontByID( fontID ); - freeglut_return_val_if_fail( font, 0 ); - if ( !string || ! *string ) - return 0; - - while( ( c = *string++) ) - { - if( c != '\n' )/* Not an EOL, increment length of line */ - this_line_length += *( font->Characters[ c ]); - else /* EOL; reset the length of this line */ - { - if( length < this_line_length ) - length = this_line_length; - this_line_length = 0; - } - } - if ( length < this_line_length ) - length = this_line_length; - - return length; -} - -/* - * Returns the height of a bitmap font - */ -int FGAPIENTRY glutBitmapHeight( void* fontID ) -{ - SFG_Font* font; - FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutBitmapHeight" ); - font = fghFontByID( fontID ); - freeglut_return_val_if_fail( font, 0 ); - return font->Height; -} - -/* - * Draw a stroke character - */ -void FGAPIENTRY glutStrokeCharacter( void* fontID, int character ) -{ - const SFG_StrokeChar *schar; - const SFG_StrokeStrip *strip; - int i, j; - SFG_StrokeFont* font; - FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutStrokeCharacter" ); - font = fghStrokeByID( fontID ); - freeglut_return_if_fail( character >= 0 ); - freeglut_return_if_fail( character < font->Quantity ); - freeglut_return_if_fail( font ); - - schar = font->Characters[ character ]; - freeglut_return_if_fail( schar ); - strip = schar->Strips; - - for( i = 0; i < schar->Number; i++, strip++ ) - { - glBegin( GL_LINE_STRIP ); - for( j = 0; j < strip->Number; j++ ) - glVertex2f( strip->Vertices[ j ].X, strip->Vertices[ j ].Y ); - glEnd( ); - glBegin( GL_POINTS ); - for( j = 0; j < strip->Number; j++ ) - glVertex2f( strip->Vertices[ j ].X, strip->Vertices[ j ].Y ); - glEnd( ); - } - glTranslatef( schar->Right, 0.0, 0.0 ); -} - -void FGAPIENTRY glutStrokeString( void* fontID, const unsigned char *string ) -{ - unsigned char c; - int i, j; - float length = 0.0; - SFG_StrokeFont* font; - FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutStrokeString" ); - font = fghStrokeByID( fontID ); - freeglut_return_if_fail( font ); - if ( !string || ! *string ) - return; - - /* - * Step through the string, drawing each character. - * A newline will simply translate the next character's insertion - * point back to the start of the line and down one line. - */ - while( ( c = *string++) ) - if( c < font->Quantity ) - { - if( c == '\n' ) - { - glTranslatef ( -length, -( float )( font->Height ), 0.0 ); - length = 0.0; - } - else /* Not an EOL, draw the bitmap character */ - { - const SFG_StrokeChar *schar = font->Characters[ c ]; - if( schar ) - { - const SFG_StrokeStrip *strip = schar->Strips; - - for( i = 0; i < schar->Number; i++, strip++ ) - { - glBegin( GL_LINE_STRIP ); - for( j = 0; j < strip->Number; j++ ) - glVertex2f( strip->Vertices[ j ].X, - strip->Vertices[ j ].Y); - - glEnd( ); - } - - length += schar->Right; - glTranslatef( schar->Right, 0.0, 0.0 ); - } - } - } -} - -/* - * Return the width in pixels of a stroke character - */ -int FGAPIENTRY glutStrokeWidth( void* fontID, int character ) -{ - const SFG_StrokeChar *schar; - SFG_StrokeFont* font; - FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutStrokeWidth" ); - font = fghStrokeByID( fontID ); - freeglut_return_val_if_fail( ( character >= 0 ) && - ( character < font->Quantity ), - 0 - ); - freeglut_return_val_if_fail( font, 0 ); - schar = font->Characters[ character ]; - freeglut_return_val_if_fail( schar, 0 ); - - return ( int )( schar->Right + 0.5 ); -} - -/* - * Return the width of a string drawn using a stroke font - */ -int FGAPIENTRY glutStrokeLength( void* fontID, const unsigned char* string ) -{ - unsigned char c; - float length = 0.0; - float this_line_length = 0.0; - SFG_StrokeFont* font; - FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutStrokeLength" ); - font = fghStrokeByID( fontID ); - freeglut_return_val_if_fail( font, 0 ); - if ( !string || ! *string ) - return 0; - - while( ( c = *string++) ) - if( c < font->Quantity ) - { - if( c == '\n' ) /* EOL; reset the length of this line */ - { - if( length < this_line_length ) - length = this_line_length; - this_line_length = 0.0; - } - else /* Not an EOL, increment the length of this line */ - { - const SFG_StrokeChar *schar = font->Characters[ c ]; - if( schar ) - this_line_length += schar->Right; - } - } - if( length < this_line_length ) - length = this_line_length; - return( int )( length + 0.5 ); -} - -/* - * Returns the height of a stroke font - */ -GLfloat FGAPIENTRY glutStrokeHeight( void* fontID ) -{ - SFG_StrokeFont* font; - FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutStrokeHeight" ); - font = fghStrokeByID( fontID ); - freeglut_return_val_if_fail( font, 0.0 ); - return font->Height; -} - -/*** END OF FILE ***/ +/* + * freeglut_font.c + * + * Bitmap and stroke fonts displaying. + * + * 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: + * + * Test things out ... + */ + +/* -- IMPORT DECLARATIONS -------------------------------------------------- */ + +/* + * These are the font faces defined in freeglut_font_data.c file: + */ +extern SFG_Font fgFontFixed8x13; +extern SFG_Font fgFontFixed9x15; +extern SFG_Font fgFontHelvetica10; +extern SFG_Font fgFontHelvetica12; +extern SFG_Font fgFontHelvetica18; +extern SFG_Font fgFontTimesRoman10; +extern SFG_Font fgFontTimesRoman24; +extern SFG_StrokeFont fgStrokeRoman; +extern SFG_StrokeFont fgStrokeMonoRoman; + + +/* -- PRIVATE FUNCTIONS ---------------------------------------------------- */ + +/* + * Matches a font ID with a SFG_Font structure pointer. + * This was changed to match the GLUT header style. + */ +static SFG_Font* fghFontByID( void* font ) +{ + if( font == GLUT_BITMAP_8_BY_13 ) + return &fgFontFixed8x13; + if( font == GLUT_BITMAP_9_BY_15 ) + return &fgFontFixed9x15; + if( font == GLUT_BITMAP_HELVETICA_10 ) + return &fgFontHelvetica10; + if( font == GLUT_BITMAP_HELVETICA_12 ) + return &fgFontHelvetica12; + if( font == GLUT_BITMAP_HELVETICA_18 ) + return &fgFontHelvetica18; + if( font == GLUT_BITMAP_TIMES_ROMAN_10 ) + return &fgFontTimesRoman10; + if( font == GLUT_BITMAP_TIMES_ROMAN_24 ) + return &fgFontTimesRoman24; + + fgWarning( "font 0x%08x not found", font ); + return 0; +} + +/* + * Matches a font ID with a SFG_StrokeFont structure pointer. + * This was changed to match the GLUT header style. + */ +static SFG_StrokeFont* fghStrokeByID( void* font ) +{ + if( font == GLUT_STROKE_ROMAN ) + return &fgStrokeRoman; + if( font == GLUT_STROKE_MONO_ROMAN ) + return &fgStrokeMonoRoman; + + fgWarning( "stroke font 0x%08x not found", font ); + return 0; +} + + +/* -- INTERFACE FUNCTIONS -------------------------------------------------- */ + +/* + * Draw a bitmap character + */ +void FGAPIENTRY glutBitmapCharacter( void* fontID, int character ) +{ + const GLubyte* face; + SFG_Font* font; + FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutBitmapCharacter" ); + font = fghFontByID( fontID ); + freeglut_return_if_fail( ( character >= 1 )&&( character < 256 ) ); + freeglut_return_if_fail( font ); + + /* + * Find the character we want to draw (???) + */ + face = font->Characters[ character ]; + + glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT ); + 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 ); + glBitmap( + face[ 0 ], font->Height, /* The bitmap's width and height */ + font->xorig, font->yorig, /* The origin in the font glyph */ + ( float )( face[ 0 ] ), 0.0, /* The raster advance -- inc. x,y */ + ( face + 1 ) /* The packed bitmap data... */ + ); + glPopClientAttrib( ); +} + +void FGAPIENTRY glutBitmapString( void* fontID, const unsigned char *string ) +{ + unsigned char c; + float x = 0.0f ; + SFG_Font* font; + FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutBitmapString" ); + font = fghFontByID( fontID ); + freeglut_return_if_fail( font ); + if ( !string || ! *string ) + return; + + glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT ); + 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 ); + + /* + * Step through the string, drawing each character. + * A newline will simply translate the next character's insertion + * point back to the start of the line and down one line. + */ + while( ( c = *string++) ) + if( c == '\n' ) + { + glBitmap ( 0, 0, 0, 0, -x, (float) -font->Height, NULL ); + x = 0.0f; + } + else /* Not an EOL, draw the bitmap character */ + { + const GLubyte* face = font->Characters[ c ]; + + glBitmap( + face[ 0 ], font->Height, /* Bitmap's width and height */ + font->xorig, font->yorig, /* The origin in the font glyph */ + ( float )( face[ 0 ] ), 0.0, /* The raster advance; inc. x,y */ + ( face + 1 ) /* The packed bitmap data... */ + ); + + x += ( float )( face[ 0 ] ); + } + + glPopClientAttrib( ); +} + +/* + * Returns the width in pixels of a font's character + */ +int FGAPIENTRY glutBitmapWidth( void* fontID, int character ) +{ + SFG_Font* font; + FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutBitmapWidth" ); + font = fghFontByID( fontID ); + freeglut_return_val_if_fail( character > 0 && character < 256, 0 ); + freeglut_return_val_if_fail( font, 0 ); + return *( font->Characters[ character ] ); +} + +/* + * Return the width of a string drawn using a bitmap font + */ +int FGAPIENTRY glutBitmapLength( void* fontID, const unsigned char* string ) +{ + unsigned char c; + int length = 0, this_line_length = 0; + SFG_Font* font; + FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutBitmapLength" ); + font = fghFontByID( fontID ); + freeglut_return_val_if_fail( font, 0 ); + if ( !string || ! *string ) + return 0; + + while( ( c = *string++) ) + { + if( c != '\n' )/* Not an EOL, increment length of line */ + this_line_length += *( font->Characters[ c ]); + else /* EOL; reset the length of this line */ + { + if( length < this_line_length ) + length = this_line_length; + this_line_length = 0; + } + } + if ( length < this_line_length ) + length = this_line_length; + + return length; +} + +/* + * Returns the height of a bitmap font + */ +int FGAPIENTRY glutBitmapHeight( void* fontID ) +{ + SFG_Font* font; + FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutBitmapHeight" ); + font = fghFontByID( fontID ); + freeglut_return_val_if_fail( font, 0 ); + return font->Height; +} + +/* + * Draw a stroke character + */ +void FGAPIENTRY glutStrokeCharacter( void* fontID, int character ) +{ + const SFG_StrokeChar *schar; + const SFG_StrokeStrip *strip; + int i, j; + SFG_StrokeFont* font; + FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutStrokeCharacter" ); + font = fghStrokeByID( fontID ); + freeglut_return_if_fail( character >= 0 ); + freeglut_return_if_fail( character < font->Quantity ); + freeglut_return_if_fail( font ); + + schar = font->Characters[ character ]; + freeglut_return_if_fail( schar ); + strip = schar->Strips; + + for( i = 0; i < schar->Number; i++, strip++ ) + { + glBegin( GL_LINE_STRIP ); + for( j = 0; j < strip->Number; j++ ) + glVertex2f( strip->Vertices[ j ].X, strip->Vertices[ j ].Y ); + glEnd( ); + glBegin( GL_POINTS ); + for( j = 0; j < strip->Number; j++ ) + glVertex2f( strip->Vertices[ j ].X, strip->Vertices[ j ].Y ); + glEnd( ); + } + glTranslatef( schar->Right, 0.0, 0.0 ); +} + +void FGAPIENTRY glutStrokeString( void* fontID, const unsigned char *string ) +{ + unsigned char c; + int i, j; + float length = 0.0; + SFG_StrokeFont* font; + FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutStrokeString" ); + font = fghStrokeByID( fontID ); + freeglut_return_if_fail( font ); + if ( !string || ! *string ) + return; + + /* + * Step through the string, drawing each character. + * A newline will simply translate the next character's insertion + * point back to the start of the line and down one line. + */ + while( ( c = *string++) ) + if( c < font->Quantity ) + { + if( c == '\n' ) + { + glTranslatef ( -length, -( float )( font->Height ), 0.0 ); + length = 0.0; + } + else /* Not an EOL, draw the bitmap character */ + { + const SFG_StrokeChar *schar = font->Characters[ c ]; + if( schar ) + { + const SFG_StrokeStrip *strip = schar->Strips; + + for( i = 0; i < schar->Number; i++, strip++ ) + { + glBegin( GL_LINE_STRIP ); + for( j = 0; j < strip->Number; j++ ) + glVertex2f( strip->Vertices[ j ].X, + strip->Vertices[ j ].Y); + + glEnd( ); + } + + length += schar->Right; + glTranslatef( schar->Right, 0.0, 0.0 ); + } + } + } +} + +/* + * Return the width in pixels of a stroke character + */ +int FGAPIENTRY glutStrokeWidth( void* fontID, int character ) +{ + const SFG_StrokeChar *schar; + SFG_StrokeFont* font; + FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutStrokeWidth" ); + font = fghStrokeByID( fontID ); + freeglut_return_val_if_fail( ( character >= 0 ) && + ( character < font->Quantity ), + 0 + ); + freeglut_return_val_if_fail( font, 0 ); + schar = font->Characters[ character ]; + freeglut_return_val_if_fail( schar, 0 ); + + return ( int )( schar->Right + 0.5 ); +} + +/* + * Return the width of a string drawn using a stroke font + */ +int FGAPIENTRY glutStrokeLength( void* fontID, const unsigned char* string ) +{ + unsigned char c; + float length = 0.0; + float this_line_length = 0.0; + SFG_StrokeFont* font; + FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutStrokeLength" ); + font = fghStrokeByID( fontID ); + freeglut_return_val_if_fail( font, 0 ); + if ( !string || ! *string ) + return 0; + + while( ( c = *string++) ) + if( c < font->Quantity ) + { + if( c == '\n' ) /* EOL; reset the length of this line */ + { + if( length < this_line_length ) + length = this_line_length; + this_line_length = 0.0; + } + else /* Not an EOL, increment the length of this line */ + { + const SFG_StrokeChar *schar = font->Characters[ c ]; + if( schar ) + this_line_length += schar->Right; + } + } + if( length < this_line_length ) + length = this_line_length; + return( int )( length + 0.5 ); +} + +/* + * Returns the height of a stroke font + */ +GLfloat FGAPIENTRY glutStrokeHeight( void* fontID ) +{ + SFG_StrokeFont* font; + FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutStrokeHeight" ); + font = fghStrokeByID( fontID ); + freeglut_return_val_if_fail( font, 0.0 ); + return font->Height; +} + +/*** END OF FILE ***/