/**************************************************************************** * * psblues.c * * Adobe's code for handling Blue Zones (body). * * Copyright 2009-2014 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 <freetype/internal/ftdebug.h> #include "psblues.h" #include "pshints.h" #include "psfont.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. */ #undef FT_COMPONENT #define FT_COMPONENT … /* * For blue values, the FreeType parser produces an array of integers, * while the Adobe CFF engine produces an array of fixed. * Define a macro to convert FreeType to fixed. */ #define cf2_blueToFixed( x ) … FT_LOCAL_DEF( void ) cf2_blues_init( CF2_Blues blues, CF2_Font font ) { … } /* * Check whether `stemHint' is captured by one of the blue zones. * * Zero, one or both edges may be valid; only valid edges can be * captured. For compatibility with CoolType, search top and bottom * zones in the same pass (see `BlueLock'). If a hint is captured, * return true and position the edge(s) in one of 3 ways: * * 1) If `BlueScale' suppresses overshoot, position the captured edge * at the flat edge of the zone. * 2) If overshoot is not suppressed and `BlueShift' requires * overshoot, position the captured edge a minimum of 1 device pixel * from the flat edge. * 3) If overshoot is not suppressed or required, position the captured * edge at the nearest device pixel. * */ FT_LOCAL_DEF( FT_Bool ) cf2_blues_capture( const CF2_Blues blues, CF2_Hint bottomHintEdge, CF2_Hint topHintEdge ) { … } /* END */
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