Added GLUT_ALLOW_NEGATIVE_WINDOW_POSITION so windows can be created with negative position coordinates.
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@ -90,6 +90,8 @@
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#define GLUT_STROKE_FONT_DRAW_JOIN_DOTS 0x0206 /* Draw dots between line segments of stroke fonts? */
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#define GLUT_ALLOW_NEGATIVE_WINDOW_POSITION 0x0207 /* GLUT doesn't allow negative window positions by default */
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/*
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* New tokens for glutInitDisplayMode.
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* Only one GLUT_AUXn bit may be used at a time.
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@ -88,6 +88,7 @@ SFG_State fgState = { { -1, -1, GL_FALSE }, /* Position */
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4, /* SampleNumber */
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GL_FALSE, /* SkipStaleMotion */
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GL_FALSE, /* StrokeFontDrawJoinDots */
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GL_FALSE, /* AllowNegativeWindowPosition */
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1, /* OpenGL context MajorVersion */
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0, /* OpenGL context MinorVersion */
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0, /* OpenGL ContextFlags */
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@ -370,10 +371,10 @@ void FGAPIENTRY glutInit( int* pargc, char** argv )
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if( (mask & (WidthValue|HeightValue)) == (WidthValue|HeightValue) )
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fgState.Size.Use = GL_TRUE;
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if( mask & XNegative )
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if( ( mask & XNegative ) && !fgState.AllowNegativeWindowPosition )
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fgState.Position.X += fgDisplay.ScreenWidth - fgState.Size.X;
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if( mask & YNegative )
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if( ( mask & YNegative ) && !fgState.AllowNegativeWindowPosition )
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fgState.Position.Y += fgDisplay.ScreenHeight - fgState.Size.Y;
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if( (mask & (XValue|YValue)) == (XValue|YValue) )
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@ -397,7 +398,7 @@ void FGAPIENTRY glutInitWindowPosition( int x, int y )
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fgState.Position.X = x;
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fgState.Position.Y = y;
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if( ( x >= 0 ) && ( y >= 0 ) )
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if( ( ( x >= 0 ) && ( y >= 0 ) ) || fgState.AllowNegativeWindowPosition )
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fgState.Position.Use = GL_TRUE;
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else
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fgState.Position.Use = GL_FALSE;
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@ -354,6 +354,7 @@ struct tagSFG_State
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GLboolean SkipStaleMotion; /* skip stale motion events */
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GLboolean StrokeFontDrawJoinDots;/* Draw dots between line segments of stroke fonts? */
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GLboolean AllowNegativeWindowPosition; /* GLUT, by default, doesn't allow negative window positions. Enable it? */
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int MajorVersion; /* Major OpenGL context version */
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int MinorVersion; /* Minor OpenGL context version */
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@ -122,6 +122,10 @@ void FGAPIENTRY glutSetOption( GLenum eWhat, int value )
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fgState.StrokeFontDrawJoinDots = !!value;
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break;
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case GLUT_ALLOW_NEGATIVE_WINDOW_POSITION:
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fgState.AllowNegativeWindowPosition = !!value;
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break;
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default:
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fgWarning( "glutSetOption(): missing enum handle %d", eWhat );
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break;
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@ -225,6 +229,9 @@ int FGAPIENTRY glutGet( GLenum eWhat )
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case GLUT_STROKE_FONT_DRAW_JOIN_DOTS:
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return fgState.StrokeFontDrawJoinDots;
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case GLUT_ALLOW_NEGATIVE_WINDOW_POSITION:
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return fgState.AllowNegativeWindowPosition;
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default:
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return fgPlatformGlutGet ( eWhat );
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break;
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