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1 /* |
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2 * Copyright © 2007,2008,2009 Red Hat, Inc. |
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3 * Copyright © 2012,2013 Google, Inc. |
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4 * |
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5 * This is part of HarfBuzz, a text shaping library. |
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6 * |
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7 * Permission is hereby granted, without written agreement and without |
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8 * license or royalty fees, to use, copy, modify, and distribute this |
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9 * software and its documentation for any purpose, provided that the |
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10 * above copyright notice and the following two paragraphs appear in |
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11 * all copies of this software. |
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12 * |
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13 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
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14 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
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15 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
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16 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
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17 * DAMAGE. |
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18 * |
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19 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
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20 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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21 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
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22 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
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23 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
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24 * |
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25 * Red Hat Author(s): Behdad Esfahbod |
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26 * Google Author(s): Behdad Esfahbod |
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27 */ |
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28 |
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29 #ifndef HB_OT_LAYOUT_HH |
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30 #define HB_OT_LAYOUT_HH |
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31 |
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32 #include "hb.hh" |
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33 |
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34 #include "hb-font.hh" |
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35 #include "hb-buffer.hh" |
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36 #include "hb-open-type.hh" |
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37 #include "hb-ot-shape.hh" |
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38 #include "hb-set-digest.hh" |
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39 |
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40 |
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41 struct hb_ot_shape_plan_t; |
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42 |
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43 |
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44 /* |
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45 * kern |
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46 */ |
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47 |
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48 HB_INTERNAL bool |
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49 hb_ot_layout_has_kerning (hb_face_t *face); |
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50 |
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51 HB_INTERNAL bool |
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52 hb_ot_layout_has_machine_kerning (hb_face_t *face); |
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53 |
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54 HB_INTERNAL bool |
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55 hb_ot_layout_has_cross_kerning (hb_face_t *face); |
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56 |
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57 HB_INTERNAL void |
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58 hb_ot_layout_kern (const hb_ot_shape_plan_t *plan, |
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59 hb_font_t *font, |
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60 hb_buffer_t *buffer); |
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61 |
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62 |
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63 /* Private API corresponding to hb-ot-layout.h: */ |
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64 |
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65 HB_INTERNAL bool |
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66 hb_ot_layout_table_find_feature (hb_face_t *face, |
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67 hb_tag_t table_tag, |
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68 hb_tag_t feature_tag, |
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69 unsigned int *feature_index); |
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70 |
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71 |
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72 /* |
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73 * GDEF |
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74 */ |
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75 |
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76 enum hb_ot_layout_glyph_props_flags_t |
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77 { |
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78 /* The following three match LookupFlags::Ignore* numbers. */ |
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79 HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH = 0x02u, |
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80 HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE = 0x04u, |
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81 HB_OT_LAYOUT_GLYPH_PROPS_MARK = 0x08u, |
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82 |
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83 /* The following are used internally; not derived from GDEF. */ |
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84 HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED = 0x10u, |
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85 HB_OT_LAYOUT_GLYPH_PROPS_LIGATED = 0x20u, |
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86 HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED = 0x40u, |
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87 |
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88 HB_OT_LAYOUT_GLYPH_PROPS_PRESERVE = HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED | |
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89 HB_OT_LAYOUT_GLYPH_PROPS_LIGATED | |
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90 HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED |
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91 }; |
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92 HB_MARK_AS_FLAG_T (hb_ot_layout_glyph_props_flags_t); |
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93 |
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94 |
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95 /* |
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96 * GSUB/GPOS |
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97 */ |
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98 |
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99 HB_INTERNAL bool |
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100 hb_ot_layout_lookup_would_substitute_fast (hb_face_t *face, |
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101 unsigned int lookup_index, |
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102 const hb_codepoint_t *glyphs, |
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103 unsigned int glyphs_length, |
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104 bool zero_context); |
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105 |
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106 |
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107 /* Should be called before all the substitute_lookup's are done. */ |
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108 HB_INTERNAL void |
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109 hb_ot_layout_substitute_start (hb_font_t *font, |
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110 hb_buffer_t *buffer); |
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111 |
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112 HB_INTERNAL void |
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113 hb_ot_layout_delete_glyphs_inplace (hb_buffer_t *buffer, |
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114 bool (*filter) (const hb_glyph_info_t *info)); |
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115 |
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116 namespace OT { |
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117 struct hb_ot_apply_context_t; |
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118 struct SubstLookup; |
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119 struct hb_ot_layout_lookup_accelerator_t; |
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120 } |
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121 |
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122 HB_INTERNAL void |
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123 hb_ot_layout_substitute_lookup (OT::hb_ot_apply_context_t *c, |
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124 const OT::SubstLookup &lookup, |
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125 const OT::hb_ot_layout_lookup_accelerator_t &accel); |
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126 |
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127 |
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128 /* Should be called before all the position_lookup's are done. */ |
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129 HB_INTERNAL void |
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130 hb_ot_layout_position_start (hb_font_t *font, |
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131 hb_buffer_t *buffer); |
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132 |
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133 /* Should be called after all the position_lookup's are done, to fini advances. */ |
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134 HB_INTERNAL void |
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135 hb_ot_layout_position_finish_advances (hb_font_t *font, |
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136 hb_buffer_t *buffer); |
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137 |
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138 /* Should be called after hb_ot_layout_position_finish_advances, to fini offsets. */ |
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139 HB_INTERNAL void |
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140 hb_ot_layout_position_finish_offsets (hb_font_t *font, |
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141 hb_buffer_t *buffer); |
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142 |
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143 |
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144 /* |
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145 * Buffer var routines. |
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146 */ |
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147 |
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148 /* buffer var allocations, used during the entire shaping process */ |
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149 #define unicode_props() var2.u16[0] |
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150 |
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151 /* buffer var allocations, used during the GSUB/GPOS processing */ |
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152 #define glyph_props() var1.u16[0] /* GDEF glyph properties */ |
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153 #define lig_props() var1.u8[2] /* GSUB/GPOS ligature tracking */ |
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154 #define syllable() var1.u8[3] /* GSUB/GPOS shaping boundaries */ |
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155 |
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156 |
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157 /* Loop over syllables. Based on foreach_cluster(). */ |
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158 #define foreach_syllable(buffer, start, end) \ |
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159 for (unsigned int \ |
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160 _count = buffer->len, \ |
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161 start = 0, end = _count ? _hb_next_syllable (buffer, 0) : 0; \ |
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162 start < _count; \ |
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163 start = end, end = _hb_next_syllable (buffer, start)) |
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164 |
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165 static inline unsigned int |
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166 _hb_next_syllable (hb_buffer_t *buffer, unsigned int start) |
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167 { |
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168 hb_glyph_info_t *info = buffer->info; |
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169 unsigned int count = buffer->len; |
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170 |
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171 unsigned int syllable = info[start].syllable(); |
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172 while (++start < count && syllable == info[start].syllable()) |
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173 ; |
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174 |
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175 return start; |
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176 } |
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177 |
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178 |
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179 /* unicode_props */ |
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180 |
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181 /* Design: |
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182 * unicode_props() is a two-byte number. The low byte includes: |
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183 * - General_Category: 5 bits. |
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184 * - A bit each for: |
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185 * * Is it Default_Ignorable(); we have a modified Default_Ignorable(). |
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186 * * Whether it's one of the three Mongolian Free Variation Selectors, |
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187 * CGJ, or other characters that are hidden but should not be ignored |
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188 * like most other Default_Ignorable()s do during matching. |
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189 * * Whether it's a grapheme continuation. |
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190 * |
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191 * The high-byte has different meanings, switched by the Gen-Cat: |
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192 * - For Mn,Mc,Me: the modified Combining_Class. |
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193 * - For Cf: whether it's ZWJ, ZWNJ, or something else. |
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194 * - For Ws: index of which space character this is, if space fallback |
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195 * is needed, ie. we don't set this by default, only if asked to. |
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196 */ |
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197 |
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198 enum hb_unicode_props_flags_t { |
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199 UPROPS_MASK_GEN_CAT = 0x001Fu, |
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200 UPROPS_MASK_IGNORABLE = 0x0020u, |
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201 UPROPS_MASK_HIDDEN = 0x0040u, /* MONGOLIAN FREE VARIATION SELECTOR 1..3, or TAG characters */ |
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202 UPROPS_MASK_CONTINUATION=0x0080u, |
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203 |
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204 /* If GEN_CAT=FORMAT, top byte masks: */ |
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205 UPROPS_MASK_Cf_ZWJ = 0x0100u, |
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206 UPROPS_MASK_Cf_ZWNJ = 0x0200u |
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207 }; |
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208 HB_MARK_AS_FLAG_T (hb_unicode_props_flags_t); |
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209 |
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210 static inline void |
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211 _hb_glyph_info_set_unicode_props (hb_glyph_info_t *info, hb_buffer_t *buffer) |
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212 { |
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213 hb_unicode_funcs_t *unicode = buffer->unicode; |
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214 unsigned int u = info->codepoint; |
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215 unsigned int gen_cat = (unsigned int) unicode->general_category (u); |
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216 unsigned int props = gen_cat; |
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217 |
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218 if (u >= 0x80) |
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219 { |
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220 buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_NON_ASCII; |
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221 |
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222 if (unlikely (unicode->is_default_ignorable (u))) |
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223 { |
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224 buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_DEFAULT_IGNORABLES; |
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225 props |= UPROPS_MASK_IGNORABLE; |
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226 if (u == 0x200Cu) props |= UPROPS_MASK_Cf_ZWNJ; |
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227 else if (u == 0x200Du) props |= UPROPS_MASK_Cf_ZWJ; |
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228 /* Mongolian Free Variation Selectors need to be remembered |
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229 * because although we need to hide them like default-ignorables, |
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230 * they need to non-ignorable during shaping. This is similar to |
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231 * what we do for joiners in Indic-like shapers, but since the |
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232 * FVSes are GC=Mn, we have use a separate bit to remember them. |
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233 * Fixes: |
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234 * https://github.com/harfbuzz/harfbuzz/issues/234 */ |
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235 else if (unlikely (hb_in_range (u, 0x180Bu, 0x180Du))) props |= UPROPS_MASK_HIDDEN; |
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236 /* TAG characters need similar treatment. Fixes: |
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237 * https://github.com/harfbuzz/harfbuzz/issues/463 */ |
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238 else if (unlikely (hb_in_range (u, 0xE0020u, 0xE007Fu))) props |= UPROPS_MASK_HIDDEN; |
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239 /* COMBINING GRAPHEME JOINER should not be skipped; at least some times. |
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240 * https://github.com/harfbuzz/harfbuzz/issues/554 */ |
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241 else if (unlikely (u == 0x034Fu)) |
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242 { |
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243 buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_CGJ; |
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244 props |= UPROPS_MASK_HIDDEN; |
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245 } |
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246 } |
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247 |
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248 if (unlikely (HB_UNICODE_GENERAL_CATEGORY_IS_MARK (gen_cat))) |
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249 { |
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250 props |= UPROPS_MASK_CONTINUATION; |
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251 props |= unicode->modified_combining_class (u)<<8; |
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252 } |
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253 } |
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254 |
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255 info->unicode_props() = props; |
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256 } |
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257 |
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258 static inline void |
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259 _hb_glyph_info_set_general_category (hb_glyph_info_t *info, |
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260 hb_unicode_general_category_t gen_cat) |
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261 { |
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262 /* Clears top-byte. */ |
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263 info->unicode_props() = (unsigned int) gen_cat | (info->unicode_props() & (0xFF & ~UPROPS_MASK_GEN_CAT)); |
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264 } |
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265 |
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266 static inline hb_unicode_general_category_t |
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267 _hb_glyph_info_get_general_category (const hb_glyph_info_t *info) |
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268 { |
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269 return (hb_unicode_general_category_t) (info->unicode_props() & UPROPS_MASK_GEN_CAT); |
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270 } |
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271 |
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272 static inline bool |
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273 _hb_glyph_info_is_unicode_mark (const hb_glyph_info_t *info) |
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274 { |
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275 return HB_UNICODE_GENERAL_CATEGORY_IS_MARK (info->unicode_props() & UPROPS_MASK_GEN_CAT); |
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276 } |
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277 static inline void |
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278 _hb_glyph_info_set_modified_combining_class (hb_glyph_info_t *info, |
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279 unsigned int modified_class) |
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280 { |
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281 if (unlikely (!_hb_glyph_info_is_unicode_mark (info))) |
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282 return; |
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283 info->unicode_props() = (modified_class<<8) | (info->unicode_props() & 0xFF); |
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284 } |
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285 static inline unsigned int |
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286 _hb_glyph_info_get_modified_combining_class (const hb_glyph_info_t *info) |
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287 { |
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288 return _hb_glyph_info_is_unicode_mark (info) ? info->unicode_props()>>8 : 0; |
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289 } |
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290 #define info_cc(info) (_hb_glyph_info_get_modified_combining_class (&(info))) |
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291 |
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292 static inline bool |
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293 _hb_glyph_info_is_unicode_space (const hb_glyph_info_t *info) |
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294 { |
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295 return _hb_glyph_info_get_general_category (info) == |
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296 HB_UNICODE_GENERAL_CATEGORY_SPACE_SEPARATOR; |
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297 } |
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298 static inline void |
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299 _hb_glyph_info_set_unicode_space_fallback_type (hb_glyph_info_t *info, hb_unicode_funcs_t::space_t s) |
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300 { |
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301 if (unlikely (!_hb_glyph_info_is_unicode_space (info))) |
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302 return; |
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303 info->unicode_props() = (((unsigned int) s)<<8) | (info->unicode_props() & 0xFF); |
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304 } |
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305 static inline hb_unicode_funcs_t::space_t |
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306 _hb_glyph_info_get_unicode_space_fallback_type (const hb_glyph_info_t *info) |
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307 { |
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308 return _hb_glyph_info_is_unicode_space (info) ? |
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309 (hb_unicode_funcs_t::space_t) (info->unicode_props()>>8) : |
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310 hb_unicode_funcs_t::NOT_SPACE; |
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311 } |
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312 |
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313 static inline bool _hb_glyph_info_ligated (const hb_glyph_info_t *info); |
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314 |
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315 static inline bool |
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316 _hb_glyph_info_is_default_ignorable (const hb_glyph_info_t *info) |
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317 { |
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318 return (info->unicode_props() & UPROPS_MASK_IGNORABLE) && |
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319 !_hb_glyph_info_ligated (info); |
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320 } |
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321 static inline bool |
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322 _hb_glyph_info_is_default_ignorable_and_not_hidden (const hb_glyph_info_t *info) |
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323 { |
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324 return ((info->unicode_props() & (UPROPS_MASK_IGNORABLE|UPROPS_MASK_HIDDEN)) |
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325 == UPROPS_MASK_IGNORABLE) && |
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326 !_hb_glyph_info_ligated (info); |
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327 } |
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328 static inline void |
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329 _hb_glyph_info_unhide (hb_glyph_info_t *info) |
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330 { |
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331 info->unicode_props() &= ~ UPROPS_MASK_HIDDEN; |
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332 } |
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333 |
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334 static inline void |
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335 _hb_glyph_info_set_continuation (hb_glyph_info_t *info) |
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336 { |
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337 info->unicode_props() |= UPROPS_MASK_CONTINUATION; |
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338 } |
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339 static inline void |
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340 _hb_glyph_info_reset_continuation (hb_glyph_info_t *info) |
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341 { |
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342 info->unicode_props() &= ~ UPROPS_MASK_CONTINUATION; |
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343 } |
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344 static inline bool |
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345 _hb_glyph_info_is_continuation (const hb_glyph_info_t *info) |
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346 { |
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347 return info->unicode_props() & UPROPS_MASK_CONTINUATION; |
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348 } |
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349 /* Loop over grapheme. Based on foreach_cluster(). */ |
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350 #define foreach_grapheme(buffer, start, end) \ |
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351 for (unsigned int \ |
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352 _count = buffer->len, \ |
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353 start = 0, end = _count ? _hb_next_grapheme (buffer, 0) : 0; \ |
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354 start < _count; \ |
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355 start = end, end = _hb_next_grapheme (buffer, start)) |
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356 |
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357 static inline unsigned int |
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358 _hb_next_grapheme (hb_buffer_t *buffer, unsigned int start) |
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359 { |
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360 hb_glyph_info_t *info = buffer->info; |
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361 unsigned int count = buffer->len; |
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362 |
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363 while (++start < count && _hb_glyph_info_is_continuation (&info[start])) |
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364 ; |
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365 |
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366 return start; |
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367 } |
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368 |
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369 static inline bool |
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370 _hb_glyph_info_is_unicode_format (const hb_glyph_info_t *info) |
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371 { |
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372 return _hb_glyph_info_get_general_category (info) == |
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373 HB_UNICODE_GENERAL_CATEGORY_FORMAT; |
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374 } |
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375 static inline bool |
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376 _hb_glyph_info_is_zwnj (const hb_glyph_info_t *info) |
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377 { |
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378 return _hb_glyph_info_is_unicode_format (info) && (info->unicode_props() & UPROPS_MASK_Cf_ZWNJ); |
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379 } |
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380 static inline bool |
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381 _hb_glyph_info_is_zwj (const hb_glyph_info_t *info) |
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382 { |
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383 return _hb_glyph_info_is_unicode_format (info) && (info->unicode_props() & UPROPS_MASK_Cf_ZWJ); |
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384 } |
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385 static inline bool |
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386 _hb_glyph_info_is_joiner (const hb_glyph_info_t *info) |
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387 { |
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388 return _hb_glyph_info_is_unicode_format (info) && (info->unicode_props() & (UPROPS_MASK_Cf_ZWNJ|UPROPS_MASK_Cf_ZWJ)); |
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389 } |
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390 static inline void |
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391 _hb_glyph_info_flip_joiners (hb_glyph_info_t *info) |
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392 { |
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393 if (!_hb_glyph_info_is_unicode_format (info)) |
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394 return; |
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395 info->unicode_props() ^= UPROPS_MASK_Cf_ZWNJ | UPROPS_MASK_Cf_ZWJ; |
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396 } |
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397 |
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398 /* lig_props: aka lig_id / lig_comp |
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399 * |
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400 * When a ligature is formed: |
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401 * |
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402 * - The ligature glyph and any marks in between all the same newly allocated |
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403 * lig_id, |
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404 * - The ligature glyph will get lig_num_comps set to the number of components |
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405 * - The marks get lig_comp > 0, reflecting which component of the ligature |
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406 * they were applied to. |
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407 * - This is used in GPOS to attach marks to the right component of a ligature |
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408 * in MarkLigPos, |
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409 * - Note that when marks are ligated together, much of the above is skipped |
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410 * and the current lig_id reused. |
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411 * |
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412 * When a multiple-substitution is done: |
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413 * |
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414 * - All resulting glyphs will have lig_id = 0, |
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415 * - The resulting glyphs will have lig_comp = 0, 1, 2, ... respectively. |
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416 * - This is used in GPOS to attach marks to the first component of a |
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417 * multiple substitution in MarkBasePos. |
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418 * |
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419 * The numbers are also used in GPOS to do mark-to-mark positioning only |
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420 * to marks that belong to the same component of the same ligature. |
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421 */ |
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422 |
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423 static inline void |
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424 _hb_glyph_info_clear_lig_props (hb_glyph_info_t *info) |
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425 { |
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426 info->lig_props() = 0; |
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427 } |
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428 |
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429 #define IS_LIG_BASE 0x10 |
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430 |
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431 static inline void |
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432 _hb_glyph_info_set_lig_props_for_ligature (hb_glyph_info_t *info, |
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433 unsigned int lig_id, |
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434 unsigned int lig_num_comps) |
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435 { |
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436 info->lig_props() = (lig_id << 5) | IS_LIG_BASE | (lig_num_comps & 0x0F); |
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437 } |
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438 |
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439 static inline void |
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440 _hb_glyph_info_set_lig_props_for_mark (hb_glyph_info_t *info, |
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441 unsigned int lig_id, |
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442 unsigned int lig_comp) |
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443 { |
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444 info->lig_props() = (lig_id << 5) | (lig_comp & 0x0F); |
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445 } |
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446 |
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447 static inline void |
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448 _hb_glyph_info_set_lig_props_for_component (hb_glyph_info_t *info, unsigned int comp) |
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449 { |
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450 _hb_glyph_info_set_lig_props_for_mark (info, 0, comp); |
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451 } |
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452 |
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453 static inline unsigned int |
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454 _hb_glyph_info_get_lig_id (const hb_glyph_info_t *info) |
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455 { |
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456 return info->lig_props() >> 5; |
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457 } |
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458 |
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459 static inline bool |
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460 _hb_glyph_info_ligated_internal (const hb_glyph_info_t *info) |
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461 { |
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462 return !!(info->lig_props() & IS_LIG_BASE); |
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463 } |
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464 |
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465 static inline unsigned int |
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466 _hb_glyph_info_get_lig_comp (const hb_glyph_info_t *info) |
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467 { |
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468 if (_hb_glyph_info_ligated_internal (info)) |
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469 return 0; |
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470 else |
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471 return info->lig_props() & 0x0F; |
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472 } |
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473 |
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474 static inline unsigned int |
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475 _hb_glyph_info_get_lig_num_comps (const hb_glyph_info_t *info) |
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476 { |
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477 if ((info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE) && |
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478 _hb_glyph_info_ligated_internal (info)) |
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479 return info->lig_props() & 0x0F; |
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480 else |
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481 return 1; |
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482 } |
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483 |
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484 static inline uint8_t |
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485 _hb_allocate_lig_id (hb_buffer_t *buffer) { |
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486 uint8_t lig_id = buffer->next_serial () & 0x07; |
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487 if (unlikely (!lig_id)) |
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488 lig_id = _hb_allocate_lig_id (buffer); /* in case of overflow */ |
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489 return lig_id; |
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490 } |
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491 |
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492 /* glyph_props: */ |
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493 |
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494 static inline void |
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495 _hb_glyph_info_set_glyph_props (hb_glyph_info_t *info, unsigned int props) |
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496 { |
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497 info->glyph_props() = props; |
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498 } |
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499 |
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500 static inline unsigned int |
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501 _hb_glyph_info_get_glyph_props (const hb_glyph_info_t *info) |
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502 { |
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503 return info->glyph_props(); |
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504 } |
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505 |
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506 static inline bool |
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507 _hb_glyph_info_is_base_glyph (const hb_glyph_info_t *info) |
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508 { |
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509 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH); |
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510 } |
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511 |
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512 static inline bool |
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513 _hb_glyph_info_is_ligature (const hb_glyph_info_t *info) |
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514 { |
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515 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE); |
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516 } |
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517 |
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518 static inline bool |
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519 _hb_glyph_info_is_mark (const hb_glyph_info_t *info) |
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520 { |
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521 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_MARK); |
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522 } |
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523 |
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524 static inline bool |
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525 _hb_glyph_info_substituted (const hb_glyph_info_t *info) |
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526 { |
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527 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED); |
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528 } |
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529 |
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530 static inline bool |
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531 _hb_glyph_info_ligated (const hb_glyph_info_t *info) |
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532 { |
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533 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_LIGATED); |
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534 } |
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535 |
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536 static inline bool |
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537 _hb_glyph_info_multiplied (const hb_glyph_info_t *info) |
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538 { |
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539 return !!(info->glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED); |
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540 } |
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541 |
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542 static inline bool |
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543 _hb_glyph_info_ligated_and_didnt_multiply (const hb_glyph_info_t *info) |
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544 { |
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545 return _hb_glyph_info_ligated (info) && !_hb_glyph_info_multiplied (info); |
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546 } |
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547 |
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548 static inline void |
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549 _hb_glyph_info_clear_ligated_and_multiplied (hb_glyph_info_t *info) |
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550 { |
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551 info->glyph_props() &= ~(HB_OT_LAYOUT_GLYPH_PROPS_LIGATED | |
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552 HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED); |
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553 } |
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554 |
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555 static inline void |
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556 _hb_glyph_info_clear_substituted (hb_glyph_info_t *info) |
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557 { |
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558 info->glyph_props() &= ~(HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED); |
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559 } |
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560 |
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561 |
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562 /* Allocation / deallocation. */ |
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563 |
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564 static inline void |
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565 _hb_buffer_allocate_unicode_vars (hb_buffer_t *buffer) |
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566 { |
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567 HB_BUFFER_ALLOCATE_VAR (buffer, unicode_props); |
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568 } |
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569 |
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570 static inline void |
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571 _hb_buffer_deallocate_unicode_vars (hb_buffer_t *buffer) |
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572 { |
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573 HB_BUFFER_DEALLOCATE_VAR (buffer, unicode_props); |
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574 } |
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575 |
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576 static inline void |
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577 _hb_buffer_assert_unicode_vars (hb_buffer_t *buffer) |
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578 { |
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579 HB_BUFFER_ASSERT_VAR (buffer, unicode_props); |
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580 } |
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581 |
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582 static inline void |
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583 _hb_buffer_allocate_gsubgpos_vars (hb_buffer_t *buffer) |
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584 { |
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585 HB_BUFFER_ALLOCATE_VAR (buffer, glyph_props); |
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586 HB_BUFFER_ALLOCATE_VAR (buffer, lig_props); |
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587 HB_BUFFER_ALLOCATE_VAR (buffer, syllable); |
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588 } |
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589 |
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590 static inline void |
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591 _hb_buffer_deallocate_gsubgpos_vars (hb_buffer_t *buffer) |
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592 { |
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593 HB_BUFFER_DEALLOCATE_VAR (buffer, syllable); |
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594 HB_BUFFER_DEALLOCATE_VAR (buffer, lig_props); |
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595 HB_BUFFER_DEALLOCATE_VAR (buffer, glyph_props); |
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596 } |
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597 |
|
598 static inline void |
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599 _hb_buffer_assert_gsubgpos_vars (hb_buffer_t *buffer) |
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600 { |
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601 HB_BUFFER_ASSERT_VAR (buffer, glyph_props); |
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602 HB_BUFFER_ASSERT_VAR (buffer, lig_props); |
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603 HB_BUFFER_ASSERT_VAR (buffer, syllable); |
|
604 } |
|
605 |
|
606 /* Make sure no one directly touches our props... */ |
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607 #undef unicode_props0 |
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608 #undef unicode_props1 |
|
609 #undef lig_props |
|
610 #undef glyph_props |
|
611 |
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612 #endif /* HB_OT_LAYOUT_HH */ |