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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /***************************************************************************/ |
| 2 | /* */ |
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| 3 | /* pfrdrivr.c */ |
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| 4 | /* */ |
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| 5 | /* FreeType PFR driver interface (body). */ |
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| 6 | /* */ |
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| 7 | /* Copyright 2002-2004, 2006, 2008, 2010, 2011, 2013 by */ |
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| 8 | /* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
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| 9 | /* */ |
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| 10 | /* This file is part of the FreeType project, and may only be used, */ |
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| 11 | /* modified, and distributed under the terms of the FreeType project */ |
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| 12 | /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
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| 13 | /* this file you indicate that you have read the license and */ |
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| 14 | /* understand and accept it fully. */ |
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| 15 | /* */ |
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| 16 | /***************************************************************************/ |
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| 17 | |||
| 18 | |||
| 19 | #include |
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| 20 | #include FT_INTERNAL_DEBUG_H |
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| 21 | #include FT_INTERNAL_STREAM_H |
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| 22 | #include FT_SERVICE_PFR_H |
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| 23 | #include FT_SERVICE_XFREE86_NAME_H |
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| 24 | #include "pfrdrivr.h" |
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| 25 | #include "pfrobjs.h" |
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| 26 | |||
| 27 | #include "pfrerror.h" |
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| 28 | |||
| 29 | |||
| 30 | FT_CALLBACK_DEF( FT_Error ) |
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| 31 | pfr_get_kerning( FT_Face pfrface, /* PFR_Face */ |
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| 32 | FT_UInt left, |
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| 33 | FT_UInt right, |
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| 34 | FT_Vector *avector ) |
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| 35 | { |
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| 36 | PFR_Face face = (PFR_Face)pfrface; |
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| 37 | PFR_PhyFont phys = &face->phy_font; |
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| 38 | |||
| 39 | |||
| 40 | pfr_face_get_kerning( pfrface, left, right, avector ); |
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| 41 | |||
| 42 | /* convert from metrics to outline units when necessary */ |
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| 43 | if ( phys->outline_resolution != phys->metrics_resolution ) |
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| 44 | { |
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| 45 | if ( avector->x != 0 ) |
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| 46 | avector->x = FT_MulDiv( avector->x, phys->outline_resolution, |
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| 47 | phys->metrics_resolution ); |
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| 48 | |||
| 49 | if ( avector->y != 0 ) |
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| 50 | avector->y = FT_MulDiv( avector->x, phys->outline_resolution, |
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| 51 | phys->metrics_resolution ); |
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| 52 | } |
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| 53 | |||
| 54 | return FT_Err_Ok; |
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| 55 | } |
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| 56 | |||
| 57 | |||
| 58 | /* |
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| 59 | * PFR METRICS SERVICE |
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| 60 | * |
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| 61 | */ |
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| 62 | |||
| 63 | FT_CALLBACK_DEF( FT_Error ) |
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| 64 | pfr_get_advance( FT_Face pfrface, /* PFR_Face */ |
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| 65 | FT_UInt gindex, |
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| 66 | FT_Pos *anadvance ) |
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| 67 | { |
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| 68 | PFR_Face face = (PFR_Face)pfrface; |
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| 69 | FT_Error error = FT_ERR( Invalid_Argument ); |
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| 70 | |||
| 71 | |||
| 72 | *anadvance = 0; |
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| 73 | |||
| 74 | if ( !gindex ) |
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| 75 | goto Exit; |
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| 76 | |||
| 77 | gindex--; |
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| 78 | |||
| 79 | if ( face ) |
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| 80 | { |
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| 81 | PFR_PhyFont phys = &face->phy_font; |
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| 82 | |||
| 83 | |||
| 84 | if ( gindex < phys->num_chars ) |
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| 85 | { |
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| 86 | *anadvance = phys->chars[gindex].advance; |
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| 87 | error = FT_Err_Ok; |
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| 88 | } |
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| 89 | } |
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| 90 | |||
| 91 | Exit: |
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| 92 | return error; |
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| 93 | } |
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| 94 | |||
| 95 | |||
| 96 | FT_CALLBACK_DEF( FT_Error ) |
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| 97 | pfr_get_metrics( FT_Face pfrface, /* PFR_Face */ |
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| 98 | FT_UInt *anoutline_resolution, |
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| 99 | FT_UInt *ametrics_resolution, |
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| 100 | FT_Fixed *ametrics_x_scale, |
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| 101 | FT_Fixed *ametrics_y_scale ) |
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| 102 | { |
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| 103 | PFR_Face face = (PFR_Face)pfrface; |
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| 104 | PFR_PhyFont phys = &face->phy_font; |
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| 105 | FT_Fixed x_scale, y_scale; |
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| 106 | FT_Size size = face->root.size; |
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| 107 | |||
| 108 | |||
| 109 | if ( anoutline_resolution ) |
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| 110 | *anoutline_resolution = phys->outline_resolution; |
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| 111 | |||
| 112 | if ( ametrics_resolution ) |
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| 113 | *ametrics_resolution = phys->metrics_resolution; |
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| 114 | |||
| 115 | x_scale = 0x10000L; |
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| 116 | y_scale = 0x10000L; |
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| 117 | |||
| 118 | if ( size ) |
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| 119 | { |
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| 120 | x_scale = FT_DivFix( size->metrics.x_ppem << 6, |
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| 121 | phys->metrics_resolution ); |
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| 122 | |||
| 123 | y_scale = FT_DivFix( size->metrics.y_ppem << 6, |
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| 124 | phys->metrics_resolution ); |
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| 125 | } |
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| 126 | |||
| 127 | if ( ametrics_x_scale ) |
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| 128 | *ametrics_x_scale = x_scale; |
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| 129 | |||
| 130 | if ( ametrics_y_scale ) |
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| 131 | *ametrics_y_scale = y_scale; |
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| 132 | |||
| 133 | return FT_Err_Ok; |
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| 134 | } |
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| 135 | |||
| 136 | |||
| 137 | FT_CALLBACK_TABLE_DEF |
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| 138 | const FT_Service_PfrMetricsRec pfr_metrics_service_rec = |
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| 139 | { |
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| 140 | pfr_get_metrics, |
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| 141 | pfr_face_get_kerning, |
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| 142 | pfr_get_advance |
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| 143 | }; |
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| 144 | |||
| 145 | |||
| 146 | /* |
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| 147 | * SERVICE LIST |
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| 148 | * |
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| 149 | */ |
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| 150 | |||
| 151 | static const FT_ServiceDescRec pfr_services[] = |
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| 152 | { |
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| 153 | { FT_SERVICE_ID_PFR_METRICS, &pfr_metrics_service_rec }, |
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| 154 | { FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_PFR }, |
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| 155 | { NULL, NULL } |
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| 156 | }; |
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| 157 | |||
| 158 | |||
| 159 | FT_CALLBACK_DEF( FT_Module_Interface ) |
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| 160 | pfr_get_service( FT_Module module, |
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| 161 | const FT_String* service_id ) |
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| 162 | { |
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| 163 | FT_UNUSED( module ); |
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| 164 | |||
| 165 | return ft_service_list_lookup( pfr_services, service_id ); |
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| 166 | } |
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| 167 | |||
| 168 | |||
| 169 | FT_CALLBACK_TABLE_DEF |
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| 170 | const FT_Driver_ClassRec pfr_driver_class = |
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| 171 | { |
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| 172 | { |
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| 173 | FT_MODULE_FONT_DRIVER | |
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| 174 | FT_MODULE_DRIVER_SCALABLE, |
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| 175 | |||
| 176 | sizeof ( FT_DriverRec ), |
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| 177 | |||
| 178 | "pfr", |
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| 179 | 0x10000L, |
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| 180 | 0x20000L, |
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| 181 | |||
| 182 | NULL, |
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| 183 | |||
| 184 | 0, /* FT_Module_Constructor */ |
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| 185 | 0, /* FT_Module_Destructor */ |
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| 186 | pfr_get_service |
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| 187 | }, |
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| 188 | |||
| 189 | sizeof ( PFR_FaceRec ), |
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| 190 | sizeof ( PFR_SizeRec ), |
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| 191 | sizeof ( PFR_SlotRec ), |
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| 192 | |||
| 193 | pfr_face_init, |
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| 194 | pfr_face_done, |
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| 195 | 0, /* FT_Size_InitFunc */ |
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| 196 | 0, /* FT_Size_DoneFunc */ |
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| 197 | pfr_slot_init, |
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| 198 | pfr_slot_done, |
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| 199 | |||
| 200 | pfr_slot_load, |
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| 201 | |||
| 202 | pfr_get_kerning, |
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| 203 | 0, /* FT_Face_AttachFunc */ |
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| 204 | 0, /* FT_Face_GetAdvancesFunc */ |
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| 205 | 0, /* FT_Size_RequestFunc */ |
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| 206 | 0, /* FT_Size_SelectFunc */ |
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| 207 | }; |
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| 208 | |||
| 209 | |||
| 210 | /* END */ |