The Tor Browser: gfx/graphite2/src/gr

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /*  GRAPHITE2 LICENSING

     3     Copyright 2010, SIL International

     4     All rights reserved.

     6     This library is free software; you can redistribute it and/or modify

     7     it under the terms of the GNU Lesser General Public License as published

     8     by the Free Software Foundation; either version 2.1 of License, or

     9     (at your option) any later version.

    11     This program is distributed in the hope that it will be useful,

    12     but WITHOUT ANY WARRANTY; without even the implied warranty of

    13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    14     Lesser General Public License for more details.

    16     You should also have received a copy of the GNU Lesser General Public

    17     License along with this library in the file named "LICENSE".

    18     If not, write to the Free Software Foundation, 51 Franklin Street,

    19     Suite 500, Boston, MA 02110-1335, USA or visit their web page on the

    20     internet at http://www.fsf.org/licenses/lgpl.html.

    22 Alternatively, the contents of this file may be used under the terms of the

    23 Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public

    24 License, as published by the Free Software Foundation, either version 2

    25 of the License or (at your option) any later version.

    26 */

    27 #include "graphite2/Segment.h"

    28 #include "inc/Segment.h"

    29 #include "inc/Slot.h"

    30 #include "inc/Font.h"

    33 extern "C" {

    36 const gr_slot* gr_slot_next_in_segment(const gr_slot* p/*not NULL*/)

    37 {

    38     assert(p);

    39     return static_cast<const gr_slot*>(p->next());

    40 }

    42 const gr_slot* gr_slot_prev_in_segment(const gr_slot* p/*not NULL*/)

    43 {

    44     assert(p);

    45     return static_cast<const gr_slot*>(p->prev());

    46 }

    48 const gr_slot* gr_slot_attached_to(const gr_slot* p/*not NULL*/)        //returns NULL iff base. If called repeatedly on result, will get to a base

    49 {

    50     assert(p);

    51     return static_cast<const gr_slot*>(p->attachedTo());

    52 }

    55 const gr_slot* gr_slot_first_attachment(const gr_slot* p/*not NULL*/)        //returns NULL iff no attachments.

    56 {        //if slot_first_attachment(p) is not NULL, then slot_attached_to(slot_first_attachment(p))==p.

    57     assert(p);

    58     return static_cast<const gr_slot*>(p->firstChild());

    59 }

    62 const gr_slot* gr_slot_next_sibling_attachment(const gr_slot* p/*not NULL*/)        //returns NULL iff no more attachments.

    63 {        //if slot_next_sibling_attachment(p) is not NULL, then slot_attached_to(slot_next_sibling_attachment(p))==slot_attached_to(p).

    64     assert(p);

    65     return static_cast<const gr_slot*>(p->nextSibling());

    66 }

    69 unsigned short gr_slot_gid(const gr_slot* p/*not NULL*/)

    70 {

    71     assert(p);

    72     return p->glyph();

    73 }

    76 float gr_slot_origin_X(const gr_slot* p/*not NULL*/)

    77 {

    78     assert(p);

    79     return p->origin().x;

    80 }

    83 float gr_slot_origin_Y(const gr_slot* p/*not NULL*/)

    84 {

    85     assert(p);

    86     return p->origin().y;

    87 }

    90 float gr_slot_advance_X(const gr_slot* p/*not NULL*/, const gr_face *face, const gr_font *font)

    91 {

    92     assert(p);

    93     float scale = 1.0;

    94     float res = p->advance();

    95     if (font)

    96     {

    97         scale = font->scale();

    98         if (face && font->isHinted())

    99             res = (res - face->glyphs().glyph(p->gid())->theAdvance().x) * scale + font->advance(p->gid());

   100         else

   101             res = res * scale;

   102     }

   103     return res;

   104 }

   106 float gr_slot_advance_Y(const gr_slot *p/*not NULL*/, const gr_face *face, const gr_font *font)

   107 {

   108     assert(p);

   109     float res = p->advancePos().y;

   110     if (font && (face || !face))

   111         return res * font->scale();

   112     else

   113         return res;

   114 }

   116 int gr_slot_before(const gr_slot* p/*not NULL*/)

   117 {

   118     assert(p);

   119     return p->before();

   120 }

   123 int gr_slot_after(const gr_slot* p/*not NULL*/)

   124 {

   125     assert(p);

   126     return p->after();

   127 }

   129 unsigned int gr_slot_index(const gr_slot *p/*not NULL*/)

   130 {

   131     assert(p);

   132     return p->index();

   133 }

   135 int gr_slot_attr(const gr_slot* p/*not NULL*/, const gr_segment* pSeg/*not NULL*/, gr_attrCode index, gr_uint8 subindex)

   136 {

   137     assert(p);

   138     return p->getAttr(pSeg, index, subindex);

   139 }

   142 int gr_slot_can_insert_before(const gr_slot* p/*not NULL*/)

   143 {

   144     assert(p);

   145     return (p->isInsertBefore())? 1 : 0;

   146 }

   149 int gr_slot_original(const gr_slot* p/*not NULL*/)

   150 {

   151     assert(p);

   152     return p->original();

   153 }

   155 void gr_slot_linebreak_before(gr_slot* p/*not NULL*/)

   156 {

   157     assert(p);

   158     gr_slot *prev = (gr_slot *)p->prev();

   159     prev->sibling(NULL);

   160     prev->next(NULL);

   161     p->prev(NULL);

   162 }

   164 #if 0       //what should this be

   165 size_t id(const gr_slot* p/*not NULL*/)

   166 {

   167     return (size_t)p->id();

   168 }

   169 #endif

   172 } // extern "C"

The Tor Browser / file revision

gfx/graphite2/src/gr_slot.cpp@6474c204b198

gfx/graphite2/src/gr_slot.cpp