diff options
Diffstat (limited to 'src/3rdparty/freetype/src/psaux/pshints.c')
| -rw-r--r-- | src/3rdparty/freetype/src/psaux/pshints.c | 181 |
1 files changed, 97 insertions, 84 deletions
diff --git a/src/3rdparty/freetype/src/psaux/pshints.c b/src/3rdparty/freetype/src/psaux/pshints.c index 3615196425..7bd08a9c9b 100644 --- a/src/3rdparty/freetype/src/psaux/pshints.c +++ b/src/3rdparty/freetype/src/psaux/pshints.c @@ -1,43 +1,43 @@ -/***************************************************************************/ -/* */ -/* pshints.c */ -/* */ -/* Adobe's code for handling CFF hints (body). */ -/* */ -/* Copyright 2007-2014 Adobe Systems Incorporated. */ -/* */ -/* This software, and all works of authorship, whether in source or */ -/* object code form as indicated by the copyright notice(s) included */ -/* herein (collectively, the "Work") is made available, and may only be */ -/* used, modified, and distributed under the FreeType Project License, */ -/* LICENSE.TXT. Additionally, subject to the terms and conditions of the */ -/* FreeType Project License, each contributor to the Work hereby grants */ -/* to any individual or legal entity exercising permissions granted by */ -/* the FreeType Project License and this section (hereafter, "You" or */ -/* "Your") a perpetual, worldwide, non-exclusive, no-charge, */ -/* royalty-free, irrevocable (except as stated in this section) patent */ -/* license to make, have made, use, offer to sell, sell, import, and */ -/* otherwise transfer the Work, where such license applies only to those */ -/* patent claims licensable by such contributor that are necessarily */ -/* infringed by their contribution(s) alone or by combination of their */ -/* contribution(s) with the Work to which such contribution(s) was */ -/* submitted. If You institute patent litigation against any entity */ -/* (including a cross-claim or counterclaim in a lawsuit) alleging that */ -/* the Work or a contribution incorporated within the Work constitutes */ -/* direct or contributory patent infringement, then any patent licenses */ -/* granted to You under this License for that Work shall terminate as of */ -/* the date such litigation is filed. */ -/* */ -/* By using, modifying, or distributing the Work you indicate that you */ -/* have read and understood the terms and conditions of the */ -/* FreeType Project License as well as those provided in this section, */ -/* and you accept them fully. */ -/* */ -/***************************************************************************/ +/**************************************************************************** + * + * pshints.c + * + * Adobe's code for handling CFF hints (body). + * + * Copyright 2007-2014 Adobe Systems Incorporated. + * + * This software, and all works of authorship, whether in source or + * object code form as indicated by the copyright notice(s) included + * herein (collectively, the "Work") is made available, and may only be + * used, modified, and distributed under the FreeType Project License, + * LICENSE.TXT. Additionally, subject to the terms and conditions of the + * FreeType Project License, each contributor to the Work hereby grants + * to any individual or legal entity exercising permissions granted by + * the FreeType Project License and this section (hereafter, "You" or + * "Your") a perpetual, worldwide, non-exclusive, no-charge, + * royalty-free, irrevocable (except as stated in this section) patent + * license to make, have made, use, offer to sell, sell, import, and + * otherwise transfer the Work, where such license applies only to those + * patent claims licensable by such contributor that are necessarily + * infringed by their contribution(s) alone or by combination of their + * contribution(s) with the Work to which such contribution(s) was + * submitted. If You institute patent litigation against any entity + * (including a cross-claim or counterclaim in a lawsuit) alleging that + * the Work or a contribution incorporated within the Work constitutes + * direct or contributory patent infringement, then any patent licenses + * granted to You under this License for that Work shall terminate as of + * the date such litigation is filed. + * + * By using, modifying, or distributing the Work you indicate that you + * have read and understood the terms and conditions of the + * FreeType Project License as well as those provided in this section, + * and you accept them fully. + * + */ #include "psft.h" -#include FT_INTERNAL_DEBUG_H +#include <freetype/internal/ftdebug.h> #include "psglue.h" #include "psfont.h" @@ -45,14 +45,14 @@ #include "psintrp.h" - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ + /************************************************************************** + * + * The macro FT_COMPONENT is used in trace mode. It is an implicit + * parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log + * messages during execution. + */ #undef FT_COMPONENT -#define FT_COMPONENT trace_cf2hints +#define FT_COMPONENT cf2hints typedef struct CF2_HintMoveRec_ @@ -217,52 +217,49 @@ FT_LOCAL_DEF( FT_Bool ) cf2_hint_isValid( const CF2_Hint hint ) { - return (FT_Bool)( hint->flags != 0 ); + return FT_BOOL( hint->flags ); } static FT_Bool cf2_hint_isPair( const CF2_Hint hint ) { - return (FT_Bool)( ( hint->flags & - ( CF2_PairBottom | CF2_PairTop ) ) != 0 ); + return FT_BOOL( hint->flags & ( CF2_PairBottom | CF2_PairTop ) ); } static FT_Bool cf2_hint_isPairTop( const CF2_Hint hint ) { - return (FT_Bool)( ( hint->flags & CF2_PairTop ) != 0 ); + return FT_BOOL( hint->flags & CF2_PairTop ); } FT_LOCAL_DEF( FT_Bool ) cf2_hint_isTop( const CF2_Hint hint ) { - return (FT_Bool)( ( hint->flags & - ( CF2_PairTop | CF2_GhostTop ) ) != 0 ); + return FT_BOOL( hint->flags & ( CF2_PairTop | CF2_GhostTop ) ); } FT_LOCAL_DEF( FT_Bool ) cf2_hint_isBottom( const CF2_Hint hint ) { - return (FT_Bool)( ( hint->flags & - ( CF2_PairBottom | CF2_GhostBottom ) ) != 0 ); + return FT_BOOL( hint->flags & ( CF2_PairBottom | CF2_GhostBottom ) ); } static FT_Bool cf2_hint_isLocked( const CF2_Hint hint ) { - return (FT_Bool)( ( hint->flags & CF2_Locked ) != 0 ); + return FT_BOOL( hint->flags & CF2_Locked ); } static FT_Bool cf2_hint_isSynthetic( const CF2_Hint hint ) { - return (FT_Bool)( ( hint->flags & CF2_Synthetic ) != 0 ); + return FT_BOOL( hint->flags & CF2_Synthetic ); } @@ -313,7 +310,7 @@ CF2_Hint hint = &hintmap->edge[i]; - FT_TRACE6(( " %3d %7.2f %7.2f %5d %s%s%s%s\n", + FT_TRACE6(( " %3zu %7.2f %7.2f %5d %s%s%s%s\n", hint->index, hint->csCoord / 65536.0, hint->dsCoord / ( hint->scale * 1.0 ), @@ -334,7 +331,7 @@ cf2_hintmap_map( CF2_HintMap hintmap, CF2_Fixed csCoord ) { - if ( hintmap->count == 0 || ! hintmap->hinted ) + if ( hintmap->count == 0 || !hintmap->hinted ) { /* there are no hints; use uniform scale and zero offset */ return FT_MulFix( csCoord, hintmap->scale ); @@ -415,6 +412,12 @@ { FT_Bool isPair = cf2_hint_isPair( &hintmap->edge[i] ); + /* final amount to move edge or edge pair */ + CF2_Fixed move = 0; + + CF2_Fixed dsCoord_i; + CF2_Fixed dsCoord_j; + /* index of upper edge (same value for ghost hint) */ j = isPair ? i + 1 : i; @@ -425,11 +428,14 @@ FT_ASSERT( cf2_hint_isLocked( &hintmap->edge[i] ) == cf2_hint_isLocked( &hintmap->edge[j] ) ); + dsCoord_i = hintmap->edge[i].dsCoord; + dsCoord_j = hintmap->edge[j].dsCoord; + if ( !cf2_hint_isLocked( &hintmap->edge[i] ) ) { /* hint edge is not locked, we can adjust it */ - CF2_Fixed fracDown = cf2_fixedFraction( hintmap->edge[i].dsCoord ); - CF2_Fixed fracUp = cf2_fixedFraction( hintmap->edge[j].dsCoord ); + CF2_Fixed fracDown = cf2_fixedFraction( dsCoord_i ); + CF2_Fixed fracUp = cf2_fixedFraction( dsCoord_j ); /* calculate all four possibilities; moves down are negative */ CF2_Fixed downMoveDown = 0 - fracDown; @@ -446,9 +452,6 @@ /* smallest move down */ CF2_Fixed moveDown = FT_MAX( downMoveDown, upMoveDown ); - /* final amount to move edge or edge pair */ - CF2_Fixed move; - CF2_Fixed downMinCounter = CF2_MIN_COUNTER; CF2_Fixed upMinCounter = CF2_MIN_COUNTER; FT_Bool saveEdge = FALSE; @@ -470,16 +473,14 @@ /* is there room to move up? */ /* there is if we are at top of array or the next edge is at or */ /* beyond proposed move up? */ - if ( j >= hintmap->count - 1 || + if ( j >= hintmap->count - 1 || hintmap->edge[j + 1].dsCoord >= - ADD_INT32( hintmap->edge[j].dsCoord, - moveUp + upMinCounter ) ) + ADD_INT32( dsCoord_j, moveUp + upMinCounter ) ) { /* there is room to move up; is there also room to move down? */ - if ( i == 0 || + if ( i == 0 || hintmap->edge[i - 1].dsCoord <= - ADD_INT32( hintmap->edge[i].dsCoord, - moveDown - downMinCounter ) ) + ADD_INT32( dsCoord_i, moveDown - downMinCounter ) ) { /* move smaller absolute amount */ move = ( -moveDown < moveUp ) ? moveDown : moveUp; /* optimum */ @@ -490,14 +491,13 @@ else { /* is there room to move down? */ - if ( i == 0 || + if ( i == 0 || hintmap->edge[i - 1].dsCoord <= - ADD_INT32( hintmap->edge[i].dsCoord, - moveDown - downMinCounter ) ) + ADD_INT32( dsCoord_i, moveDown - downMinCounter ) ) { move = moveDown; /* true if non-optimum move */ - saveEdge = (FT_Bool)( moveUp < -moveDown ); + saveEdge = FT_BOOL( moveUp < -moveDown ); } else { @@ -527,17 +527,21 @@ } /* move the edge(s) */ - hintmap->edge[i].dsCoord = ADD_INT32( hintmap->edge[i].dsCoord, - move ); + hintmap->edge[i].dsCoord = ADD_INT32( dsCoord_i, move ); if ( isPair ) - hintmap->edge[j].dsCoord = ADD_INT32( hintmap->edge[j].dsCoord, - move ); + hintmap->edge[j].dsCoord = ADD_INT32( dsCoord_j, move ); } - /* assert there are no overlaps in device space */ + /* assert there are no overlaps in device space; */ + /* ignore tests if there was overflow (that is, if */ + /* operands have the same sign but the sum does not) */ FT_ASSERT( i == 0 || + ( ( dsCoord_i ^ move ) >= 0 && + ( dsCoord_i ^ hintmap->edge[i].dsCoord ) < 0 ) || hintmap->edge[i - 1].dsCoord <= hintmap->edge[i].dsCoord ); FT_ASSERT( i < j || + ( ( dsCoord_j ^ move ) >= 0 && + ( dsCoord_j ^ hintmap->edge[j].dsCoord ) < 0 ) || hintmap->edge[i].dsCoord <= hintmap->edge[j].dsCoord ); /* adjust the scales, avoiding divide by zero */ @@ -689,8 +693,10 @@ CF2_Fixed midpoint = cf2_hintmap_map( hintmap->initialHintMap, - ADD_INT32( secondHintEdge->csCoord, - firstHintEdge->csCoord ) / 2 ); + ADD_INT32( + firstHintEdge->csCoord, + SUB_INT32 ( secondHintEdge->csCoord, + firstHintEdge->csCoord ) / 2 ) ); CF2_Fixed halfWidth = FT_MulFix( SUB_INT32( secondHintEdge->csCoord, firstHintEdge->csCoord ) / 2, @@ -1025,10 +1031,17 @@ } } - FT_TRACE6(( initialMap ? "flags: [p]air [g]host [t]op " - "[b]ottom [L]ocked [S]ynthetic\n" - "Initial hintmap\n" - : "Hints:\n" )); +#ifdef FT_DEBUG_LEVEL_TRACE + if ( initialMap ) + { + FT_TRACE6(( "flags: [p]air [g]host [t]op" + " [b]ottom [L]ocked [S]ynthetic\n" )); + FT_TRACE6(( "Initial hintmap:\n" )); + } + else + FT_TRACE6(( "Hints:\n" )); +#endif + cf2_hintmap_dump( hintmap ); /* @@ -1043,7 +1056,7 @@ /* adjust positions of hint edges that are not locked to blue zones */ cf2_hintmap_adjustHints( hintmap ); - FT_TRACE6(( "(adjusted)\n" )); + FT_TRACE6(( "Hints adjusted:\n" )); cf2_hintmap_dump( hintmap ); /* save the position of all hints that were used in this hint map; */ @@ -1215,7 +1228,7 @@ * (`u'). * * See notation in - * http://softsurfer.com/Archive/algorithm_0104/algorithm_0104B.htm. + * http://geomalgorithms.com/a05-_intersect-1.html. * Calculations are done in 16.16, but must handle the squaring of * line lengths in character space. We scale all vectors by 1/32 to * avoid overflow. This allows values up to 4095 to be squared. The |