ref: cfd5dec319e061aee6778775f6f9f1c551622056
dir: /src/pshinter/pshalgo2.h/
/***************************************************************************/ /* */ /* pshalgo2.h */ /* */ /* PostScript hinting algorithm 2 (specification). */ /* */ /* Copyright 2001 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and may only be used, */ /* modified, and distributed under the terms of the FreeType project */ /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ /* this file you indicate that you have read the license and */ /* understand and accept it fully. */ /* */ /***************************************************************************/ #ifndef __PSHALGO2_H__ #define __PSHALGO2_H__ #include "pshrec.h" #include "pshglob.h" #include FT_TRIGONOMETRY_H FT_BEGIN_HEADER typedef struct PSH2_HintRec_* PSH2_Hint; typedef enum { PSH2_HINT_GHOST = PS_HINT_FLAG_GHOST, PSH2_HINT_BOTTOM = PS_HINT_FLAG_BOTTOM, PSH2_HINT_ACTIVE = 4, PSH2_HINT_FITTED = 8 } PSH2_Hint_Flags; #define psh2_hint_is_active( x ) ( ( (x)->flags & PSH2_HINT_ACTIVE ) != 0 ) #define psh2_hint_is_ghost( x ) ( ( (x)->flags & PSH2_HINT_GHOST ) != 0 ) #define psh2_hint_is_fitted( x ) ( ( (x)->flags & PSH2_HINT_FITTED ) != 0 ) #define psh2_hint_activate( x ) (x)->flags |= PSH2_HINT_ACTIVE #define psh2_hint_deactivate( x ) (x)->flags &= ~PSH2_HINT_ACTIVE #define psh2_hint_set_fitted( x ) (x)->flags |= PSH2_HINT_FITTED typedef struct PSH2_HintRec_ { FT_Int org_pos; FT_Int org_len; FT_Pos cur_pos; FT_Pos cur_len; FT_UInt flags; PSH2_Hint parent; FT_Int order; } PSH2_HintRec; /* this is an interpolation zone used for strong points; */ /* weak points are interpolated according to their strong */ /* neighbours */ typedef struct PSH2_ZoneRec_ { FT_Fixed scale; FT_Fixed delta; FT_Pos min; FT_Pos max; } PSH2_ZoneRec, *PSH2_Zone; typedef struct PSH2_Hint_TableRec_ { FT_UInt max_hints; FT_UInt num_hints; PSH2_Hint hints; PSH2_Hint* sort; PSH2_Hint* sort_global; FT_UInt num_zones; PSH2_Zone zones; PSH2_Zone zone; PS_Mask_Table hint_masks; PS_Mask_Table counter_masks; } PSH2_Hint_TableRec, *PSH2_Hint_Table; typedef struct PSH2_PointRec_* PSH2_Point; typedef struct PSH2_ContourRec_* PSH2_Contour; enum { PSH2_DIR_NONE = 4, PSH2_DIR_UP = 1, PSH2_DIR_DOWN = -1, PSH2_DIR_LEFT = -2, PSH2_DIR_RIGHT = 2 }; enum { PSH2_POINT_OFF = 1, /* point is off the curve */ PSH2_POINT_STRONG = 2, /* point is strong */ PSH2_POINT_SMOOTH = 4, /* point is smooth */ PSH2_POINT_FITTED = 8 /* point is already fitted */ }; typedef struct PSH2_PointRec_ { PSH2_Point prev; PSH2_Point next; PSH2_Contour contour; FT_UInt flags; FT_Char dir_in; FT_Char dir_out; FT_Angle angle_in; FT_Angle angle_out; PSH2_Hint hint; FT_Pos org_u; FT_Pos cur_u; #ifdef DEBUG_HINTER FT_Pos org_x; FT_Pos cur_x; FT_Pos org_y; FT_Pos cur_y; FT_UInt flags_x; FT_UInt flags_y; #endif } PSH2_PointRec; #define psh2_point_is_strong( p ) ( (p)->flags & PSH2_POINT_STRONG ) #define psh2_point_is_fitted( p ) ( (p)->flags & PSH2_POINT_FITTED ) #define psh2_point_is_smooth( p ) ( (p)->flags & PSH2_POINT_SMOOTH ) #define psh2_point_set_strong( p ) (p)->flags |= PSH2_POINT_STRONG #define psh2_point_set_fitted( p ) (p)->flags |= PSH2_POINT_FITTED #define psh2_point_set_smooth( p ) (p)->flags |= PSH2_POINT_SMOOTH typedef struct PSH2_ContourRec_ { PSH2_Point start; FT_UInt count; } PSH2_ContourRec; typedef struct PSH2_GlyphRec_ { FT_UInt num_points; FT_UInt num_contours; PSH2_Point points; PSH2_Contour contours; FT_Memory memory; FT_Outline* outline; PSH_Globals globals; PSH2_Hint_TableRec hint_tables[2]; FT_Bool vertical; FT_Int major_dir; FT_Int minor_dir; } PSH2_GlyphRec, *PSH2_Glyph; #ifdef DEBUG_HINTER extern PSH2_Hint_Table ps2_debug_hint_table; typedef void (*PSH2_HintFunc)( PSH2_Hint hint, FT_Bool vertical ); extern PSH2_HintFunc ps2_debug_hint_func; extern PSH2_Glyph ps2_debug_glyph; #endif extern FT_Error ps2_hints_apply( PS_Hints ps_hints, FT_Outline* outline, PSH_Globals globals, FT_Render_Mode hint_mode ); FT_END_HEADER #endif /* __PSHALGO2_H__ */ /* END */