diff options
Diffstat (limited to 'tqtinterface/qt4/include/private/qt4_harfbuzz/src/harfbuzz-buffer.c')
| -rw-r--r-- | tqtinterface/qt4/include/private/qt4_harfbuzz/src/harfbuzz-buffer.c | 383 |
1 files changed, 0 insertions, 383 deletions
diff --git a/tqtinterface/qt4/include/private/qt4_harfbuzz/src/harfbuzz-buffer.c b/tqtinterface/qt4/include/private/qt4_harfbuzz/src/harfbuzz-buffer.c deleted file mode 100644 index 4d4c167..0000000 --- a/tqtinterface/qt4/include/private/qt4_harfbuzz/src/harfbuzz-buffer.c +++ /dev/null @@ -1,383 +0,0 @@ -/* - * Copyright (C) 1998-2004 David Turner and Werner Lemberg - * Copyright (C) 2004,2007 Red Hat, Inc. - * - * This is part of HarfBuzz, an OpenType Layout engine library. - * - * Permission is hereby granted, without written agreement and without - * license or royalty fees, to use, copy, modify, and distribute this - * software and its documentation for any purpose, provided that the - * above copyright notice and the following two paragraphs appear in - * all copies of this software. - * - * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR - * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES - * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN - * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH - * DAMAGE. - * - * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, - * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS - * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO - * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. - * - * Red Hat Author(s): Owen Taylor, Behdad Esfahbod - */ - -#include "harfbuzz-impl.h" -#include "harfbuzz-buffer-private.h" -#include "harfbuzz-gsub-private.h" -#include "harfbuzz-gpos-private.h" - -/* Here is how the buffer works internally: - * - * There are two string pointers: in_string and out_string. They - * always have same allocated size, but different length and positions. - * - * As an optimization, both in_string and out_string may point to the - * same piece of memory, which is owned by in_string. This remains the - * case as long as: - * - * - copy_glyph() is called - * - replace_glyph() is called with inplace=TRUE - * - add_output_glyph() and add_output_glyphs() are not called - * - * In that case swap(), and copy_glyph(), and replace_glyph() are all - * mostly no-op. - * - * As soon an add_output_glyph[s]() or replace_glyph() with inplace=FALSE is - * called, out_string is moved over to an alternate buffer (alt_string), and - * its current contents (out_length entries) are copied to the alt buffer. - * This should all remain transparent to the user. swap() then switches - * in_string and alt_string. alt_string is not allocated until its needed, - * but after that it's grown with in_string unconditionally. - * - * The buffer->separate_out boolean keeps status of whether out_string points - * to in_string (FALSE) or alt_string (TRUE). - */ - -/* Internal API */ - -static HB_Error -hb_buffer_ensure( HB_Buffer buffer, - HB_UInt size ) -{ - HB_UInt new_allocated = buffer->allocated; - - if (size > new_allocated) - { - HB_Error error; - - while (size > new_allocated) - new_allocated += (new_allocated >> 1) + 8; - - if ( buffer->positions ) - { - if ( REALLOC_ARRAY( buffer->positions, new_allocated, HB_PositionRec ) ) - return error; - } - - if ( REALLOC_ARRAY( buffer->in_string, new_allocated, HB_GlyphItemRec ) ) - return error; - - if ( buffer->separate_out ) - { - if ( REALLOC_ARRAY( buffer->alt_string, new_allocated, HB_GlyphItemRec ) ) - return error; - - buffer->out_string = buffer->alt_string; - } - else - { - buffer->out_string = buffer->in_string; - - if ( buffer->alt_string ) - { - if ( REALLOC_ARRAY( buffer->alt_string, new_allocated, HB_GlyphItemRec ) ) - return error; - } - } - - buffer->allocated = new_allocated; - } - - return HB_Err_Ok; -} - -static HB_Error -hb_buffer_duplicate_out_buffer( HB_Buffer buffer ) -{ - if ( !buffer->alt_string ) - { - HB_Error error; - - if ( ALLOC_ARRAY( buffer->alt_string, buffer->allocated, HB_GlyphItemRec ) ) - return error; - } - - buffer->out_string = buffer->alt_string; - memcpy( buffer->out_string, buffer->in_string, buffer->out_length * sizeof (buffer->out_string[0]) ); - buffer->separate_out = TRUE; - - return HB_Err_Ok; -} - -/* Public API */ - -HB_Error -hb_buffer_new( HB_Buffer *pbuffer ) -{ - HB_Buffer buffer; - HB_Error error; - - if ( ALLOC( buffer, sizeof( HB_BufferRec ) ) ) - return error; - - buffer->allocated = 0; - buffer->in_string = NULL; - buffer->alt_string = NULL; - buffer->positions = NULL; - - hb_buffer_clear( buffer ); - - *pbuffer = buffer; - - return HB_Err_Ok; -} - -void -hb_buffer_free( HB_Buffer buffer ) -{ - FREE( buffer->in_string ); - FREE( buffer->alt_string ); - buffer->out_string = NULL; - FREE( buffer->positions ); - FREE( buffer ); -} - -void -hb_buffer_clear( HB_Buffer buffer ) -{ - buffer->in_length = 0; - buffer->out_length = 0; - buffer->in_pos = 0; - buffer->out_pos = 0; - buffer->out_string = buffer->in_string; - buffer->separate_out = FALSE; - buffer->max_ligID = 0; -} - -HB_Error -hb_buffer_add_glyph( HB_Buffer buffer, - HB_UInt glyph_index, - HB_UInt properties, - HB_UInt cluster ) -{ - HB_Error error; - HB_GlyphItem glyph; - - error = hb_buffer_ensure( buffer, buffer->in_length + 1 ); - if ( error ) - return error; - - glyph = &buffer->in_string[buffer->in_length]; - glyph->gindex = glyph_index; - glyph->properties = properties; - glyph->cluster = cluster; - glyph->component = 0; - glyph->ligID = 0; - glyph->gproperties = HB_GLYPH_PROPERTIES_UNKNOWN; - - buffer->in_length++; - - return HB_Err_Ok; -} - -/* HarfBuzz-Internal API */ - -HB_INTERNAL void -_hb_buffer_clear_output( HB_Buffer buffer ) -{ - buffer->out_length = 0; - buffer->out_pos = 0; - buffer->out_string = buffer->in_string; - buffer->separate_out = FALSE; -} - -HB_INTERNAL HB_Error -_hb_buffer_clear_positions( HB_Buffer buffer ) -{ - if ( !buffer->positions ) - { - HB_Error error; - - if ( ALLOC_ARRAY( buffer->positions, buffer->allocated, HB_PositionRec ) ) - return error; - } - - memset (buffer->positions, 0, sizeof (buffer->positions[0]) * buffer->in_length); - - return HB_Err_Ok; -} - -HB_INTERNAL void -_hb_buffer_swap( HB_Buffer buffer ) -{ - HB_GlyphItem tmp_string; - int tmp_length; - int tmp_pos; - - if ( buffer->separate_out ) - { - tmp_string = buffer->in_string; - buffer->in_string = buffer->out_string; - buffer->out_string = tmp_string; - buffer->alt_string = buffer->out_string; - } - - tmp_length = buffer->in_length; - buffer->in_length = buffer->out_length; - buffer->out_length = tmp_length; - - tmp_pos = buffer->in_pos; - buffer->in_pos = buffer->out_pos; - buffer->out_pos = tmp_pos; -} - -/* The following function copies `num_out' elements from `glyph_data' - to `buffer->out_string', advancing the in array pointer in the structure - by `num_in' elements, and the out array pointer by `num_out' elements. - Finally, it sets the `length' field of `out' equal to - `pos' of the `out' structure. - - If `component' is 0xFFFF, the component value from buffer->in_pos - will copied `num_out' times, otherwise `component' itself will - be used to fill the `component' fields. - - If `ligID' is 0xFFFF, the ligID value from buffer->in_pos - will copied `num_out' times, otherwise `ligID' itself will - be used to fill the `ligID' fields. - - The properties for all replacement glyphs are taken - from the glyph at position `buffer->in_pos'. - - The cluster value for the glyph at position buffer->in_pos is used - for all replacement glyphs */ -HB_INTERNAL HB_Error -_hb_buffer_add_output_glyphs( HB_Buffer buffer, - HB_UShort num_in, - HB_UShort num_out, - HB_UShort *glyph_data, - HB_UShort component, - HB_UShort ligID ) -{ - HB_Error error; - HB_UShort i; - HB_UInt properties; - HB_UInt cluster; - - error = hb_buffer_ensure( buffer, buffer->out_pos + num_out ); - if ( error ) - return error; - - if ( !buffer->separate_out ) - { - error = hb_buffer_duplicate_out_buffer( buffer ); - if ( error ) - return error; - } - - properties = buffer->in_string[buffer->in_pos].properties; - cluster = buffer->in_string[buffer->in_pos].cluster; - if ( component == 0xFFFF ) - component = buffer->in_string[buffer->in_pos].component; - if ( ligID == 0xFFFF ) - ligID = buffer->in_string[buffer->in_pos].ligID; - - for ( i = 0; i < num_out; i++ ) - { - HB_GlyphItem item = &buffer->out_string[buffer->out_pos + i]; - - item->gindex = glyph_data[i]; - item->properties = properties; - item->cluster = cluster; - item->component = component; - item->ligID = ligID; - item->gproperties = HB_GLYPH_PROPERTIES_UNKNOWN; - } - - buffer->in_pos += num_in; - buffer->out_pos += num_out; - - buffer->out_length = buffer->out_pos; - - return HB_Err_Ok; -} - -HB_INTERNAL HB_Error -_hb_buffer_add_output_glyph( HB_Buffer buffer, - HB_UInt glyph_index, - HB_UShort component, - HB_UShort ligID ) -{ - HB_UShort glyph_data = glyph_index; - - return _hb_buffer_add_output_glyphs ( buffer, 1, 1, - &glyph_data, component, ligID ); -} - -HB_INTERNAL HB_Error -_hb_buffer_copy_output_glyph ( HB_Buffer buffer ) -{ - HB_Error error; - - error = hb_buffer_ensure( buffer, buffer->out_pos + 1 ); - if ( error ) - return error; - - if ( buffer->separate_out ) - { - buffer->out_string[buffer->out_pos] = buffer->in_string[buffer->in_pos]; - } - - buffer->in_pos++; - buffer->out_pos++; - buffer->out_length = buffer->out_pos; - - return HB_Err_Ok; -} - -HB_INTERNAL HB_Error -_hb_buffer_replace_output_glyph( HB_Buffer buffer, - HB_UInt glyph_index, - HB_Bool inplace ) -{ - - HB_Error error; - - if ( inplace ) - { - error = _hb_buffer_copy_output_glyph ( buffer ); - if ( error ) - return error; - - buffer->out_string[buffer->out_pos-1].gindex = glyph_index; - } - else - { - return _hb_buffer_add_output_glyph( buffer, glyph_index, 0xFFFF, 0xFFFF ); - } - - return HB_Err_Ok; -} - -HB_INTERNAL HB_UShort -_hb_buffer_allocate_ligid( HB_Buffer buffer ) -{ - buffer->max_ligID++; - if (HB_UNLIKELY (buffer->max_ligID == 0)) - buffer->max_ligID++; - - return buffer->max_ligID; -} |