kc3-lang/freetype/src/truetype/ttgload.c

src/truetype/ttgload.c

Log

Author Commit Date CI Message
Werner Lemberg 03987bfd 2014-10-16T07:19:46 A better fix for Savannah bug #43392. Suggested by Doug Felt <dougfelt@gmail.com>. * src/sfnt/ttsbit.c (tt_sbit_decoder_load_metrics): Set `vertAdvance' to zero... * src/truetype/ttgload.c (TT_Load_Glyph): ... and set here a default value for `vertAdvance' based on `linearVertAdvance' in case `vertAdvance' is zero. Note that the previous computed ad-hoc value for `linearVertAdvance' was apparently not tested in a real-life situation.
Werner Lemberg 441b3f38 2014-07-13T02:28:14 [truetype] Improve handling of buggy `prep' tables. In case of an error in the `prep' table, no longer try to execute it again and again. This makes FreeType handle endless loops in buggy fonts much faster. * src/truetype/ttobjs.h (TT_SizeRec): The fields `bytecode_ready' and `cvt_ready' are now negative if not initialized yet, otherwise they indicate the error code of the last run. * src/truetype/ttobjs.c (tt_size_run_fpgm, tt_size_run_prep, tt_size_done_bytecode, tt_size_init_bytecode, tt_size_ready_bytecode, tt_size_init, tt_size_done, tt_size_reset): Updated. * src/truetype/ttgload.c (tt_loader_init): Updated. * src/truetype/ttinterp.c (TT_RunIns): Force reexecution of `fpgm' and `prep' only if we are in the `glyf' table.
Werner Lemberg 6497b9c5 2014-06-13T09:28:00 Fix compiler warnings. Reported by Wojciech Mamrak <wmamrak@gmail.com>. * src/autofit/afglobal.c (af_face_globals_compute_style_coverage), src/autofit/afmodule.c (af_property_set): Fix `signed' vs. `unsigned' issues. * src/autofit/aflatin.c (af_latin_metrics_init_blues): Make compiler happy. * src/base/ftlcdfil.c (_ft_lcd_filter_fir): Use only four elements for `fir'. Fix `signed' vs. `unsigned' issues. * src/sfnt/sfobjs.c (WRITE_BYTE): Removed, unused. (WRITE_USHORT, WRITE_ULONG): Add proper casts. * src/truetype/ttgload.c (TT_Get_VMetrics): Add proper casts. * src/truetype/ttinterp.c (Ins_DELTAP): Add proper casts for `B1' and `B2'.
Sean McBride b24e8d33 2014-03-06T14:54:22 Remove more clang analyzer warnings. * src/bdf/bdflib.c (_bdf_readstream), src/truetype/ttgload.c (TT_Load_Glyph): Remove dead stores.
Infinality 8bb09b0f 2013-12-11T09:01:13 [truetype] Simplify logic of rendering modes. This patch unifies the subpixel and non-subpixel cases. * src/truetype/ttinterp.h (TT_ExecContextRec): Remove `grayscale_hinting'; all code should refer to `grayscale' instead. Remove unused `native_hinting' member. Rename `subpixel_hinting' member to `subpixel. * src/truetype/ttgload.c (TT_LOADER_SET_PP): Updated. (tt_loader_init): Updated. * src/truetype/ttinterp.c (Ins_GETINFO): Simplify. Updated.
Werner Lemberg 69d1a360 2013-12-10T10:12:27 [truetype] Fix scaling of vertical phantom points. * src/truetype/ttgload.c (load_truetype_glyph): Scale pp3.x and pp4.x also.
Werner Lemberg 7318b1aa 2013-12-10T09:40:36 Formatting.
Werner Lemberg 05c786d9 2013-12-10T08:38:57 [truetype] Fix positioning of composite glyphs. Problem reported by Nigel Tao <nigeltao@golang.org>. * src/truetype/ttgload.c (TT_Hint_Glyph): Remove code that shifts the glyph (component) by a fractional value computed from the LSB phantom point. This is wrong, since the horizontal phantom points get rounded horizontally later on.
Werner Lemberg 98d185c7 2013-12-07T09:26:55 [truetype] Next round in phantom point handling. Greg Hitchcock provided very interesting insights into the complicated history of the horizontal positions of the TSB and BSB phantom points. * src/truetype/ttgload.c (TT_LOADER_SET_PP) [TT_CONFIG_OPTION_SUBPIXEL_HINTING]: Use `subpixel_hinting' and `grayscale_hinting' flags as conditionals for the x position of TSB and BSB.
Werner Lemberg c2b47539 2013-12-03T07:01:57 [truetype] Remove dead code. Reported by Nigel Tao <nigeltao@golang.org>. * include/internal/tttypes.h (TT_LoaderRec): Remove unused `preserve_pps' field. * src/truetype/ttgload.c (TT_Hint_Glyph): Updated.
Werner Lemberg bdd5e75e 2013-12-03T06:57:02 [truetype] Fix phantom point handling. This is a further improvement to the changes from 2013-11-06. * src/truetype/ttgload.c (TT_Hint_Glyph): Horizontal phantom points are rounded horizontally, vertical ones are rounded vertically. (TT_LOADER_SET_PP): The horizontal position of vertical phantom points in pre-ClearType mode is zero, as shown in the OpenType specification.
Werner Lemberg a44b784b 2013-12-02T09:52:38 Formatting.
Werner Lemberg 64872a50 2013-12-02T07:51:17 [truetype] Fix change from 2013-11-20. Problem reported by Akira Kakuto <kakuto@fuk.kindai.ac.jp>. * src/truetype/ttgload.c (TT_Load_Simple_Glyph): Protect call to `Update_Max' with both a TT_USE_BYTECODE_INTERPRETER guard and a `IS_HINTED' clause. Also remove redundant check using `maxSizeOfInstructions' – in simple glyphs, the bytecode data comes before the outline data, and a validity test for this is already present.
Werner Lemberg 28626869 2013-11-20T21:06:18 [truetype] Don't trust `maxp's `maxSizeOfInstructions'. Problem reported by Hin-Tak Leung <htl10@users.sourceforge.net>; see http://lists.nongnu.org/archive/html/freetype-devel/2013-08/msg00005.html for details. * src/base/ftobjs.c (FT_Load_Glyph): Check size of `fpgm' and `prep' tables also for setting `autohint'. * src/truetype/ttgload.c (TT_Load_Simple_Glyph): Use code from `TT_Process_Composite_Glyph' for handling unreliable values of `maxSizeOfInstructions'.
Werner Lemberg ea5c781a 2013-11-12T08:55:26 [truetype] Fix last `truetype' commit. * src/truetype/ttgload.c (tt_get_metrics): Preserve stream position. Return error value. (load_truetype_glyph): Updated.
Werner Lemberg 5e225b7c 2013-11-06T08:41:59 [truetype] Fix handling of phantom points in composite glyphs. Problem reported by Nigel Tao <nigeltao@golang.org>. This is a follow-up commit to the previous one. * src/truetype/ttgload.c (load_truetype_glyph): Call `tt_get_metrics' after loading the glyph header.
Werner Lemberg 7e4b0fbf 2013-11-06T07:14:49 [truetype] Improve emulation of vertical metrics. This commit also improves the start values of vertical phantom points. Kudos to Greg Hitchcock for help. * src/truetype/ttgload.c (TT_Get_VMetrics): Add parameter to pass `yMax' value. Replace code with fixed Microsoft definition. (tt_get_metrics): Updated. (TT_LOADER_SET_PP): Add explanation how to initialize phantom points, taken from both the OpenType specification and private communication with Greg (which will eventually be added to the standard). Fix horizontal position of `pp3' and `pp4'. * src/truetype/ttgload.h: Updated. * src/truetype/ttdriver.c (tt_get_advances): Updated. * docs/CHANGES: Updated.
Werner Lemberg c6064286 2013-11-05T13:29:15 [truetype] Correctly reset point tags for glyph components. Problem reported by Nigel Tao <nigeltao@golang.org>. * src/truetype/ttgload.c (TT_Process_Composite_Glyph): Fix loop.
Werner Lemberg e921bdeb 2013-11-01T12:41:27 Comment fix.
Werner Lemberg ffee64af 2013-08-26T12:55:48 Better tracing of loaded glyphs. Previously, the loading of a glyph was traced at level 4, if at all. With this change, all font loading routines emit a tracing message at level 1, making it easier to select tracing output (for example using F2_DEBUG="any:1 afhints:7 aflatin:7"). * src/bdf/bdfdrivr.c (BDF_Glyph_Load): Add tracing message. * src/cff/cffdrivr.c (cff_glyph_load): Ditto. * src/cff/cffgload.c (cff_decoder_prepare): Improve tracing messages. * src/cid/cidgload.c (cid_load_glyph): Use level 1 for tracing message. * src/pcf/pcfdrivr.c (PCF_Glyph_Load): Ditto. * src/pfr/pfrobjs.c (pfr_slot_load): Add tracing message. * src/truetype/ttgload.c (TT_Load_Glyph): Ditto. * src/type1/t1gload.c (T1_Load_Glyph): Ditto. * src/type42/t42objs.c (T42_GlyphSlot_Load): Ditto. * src/winfonts/winfnt.c (FNT_Load_Glyph): Ditto.
Werner Lemberg 5e094c6f 2013-06-10T14:59:21 [truetype] Improve handling of broken sbit advance widths. * src/truetype/ttgload.c (TT_Load_Glyph): Use the glyph's (scaled) `linearHoriAdvance' if the sbit's `horiAdvance' value is zero. Cf. font `Fixedsys Excelsior' v3.01 (FSEX300.ttf), glyph A, 16ppem.
Werner Lemberg 45392b77 2013-06-05T13:43:20 Fix compiler warnings. * include/freetype/internal/ftmemory.h: Decorate memory allocation macros with `FT_Long' where appropriate. Remove duplicate of FT_MEM_QRENEW_ARRAY definition. * src/base/ftbitmap.c (ft_gray_for_premultiplied_srgb_bgra): Use cast. * src/base/ftobjs.c: Add warning disabling pragma for MSVC while including `md5.c'. * src/cff/cf2intrp.c (cf2_interpT2CharString) <cf2_cmdESC>: Add cast. * src/sfnt/ttsbit.c (tt_sbit_decoder_load_compound): Fix casts. (tt_sbit_decoder_load_bitmap): Beautification. * src/smooth/ftsmooth.c (ft_smooth_render_generic): Initialize variables (earlier). * src/truetype/ttgload.c (TT_Process_Simple_Glyph): Pacify compiler. * src/truetype/ttgxvar.c (TT_Get_MM_Var): Use unsigned constants where appropriate. * src/type1/t1load.c (T1_Get_MM_Var): Ditto.
Werner Lemberg f04951af 2013-05-17T13:51:07 [truetype] Add `interpreter-version' property. This makes the option TT_CONFIG_OPTION_SUBPIXEL_HINTING controllable at runtime. * src/truetype/ttdriver.c: Include FT_TRUETYPE_DRIVER_H. (tt_property_set, tt_property_get): Fill templates. * src/truetype/ttobjs.h (TT_DriverRec): Add `interpreter_version' member. Remove unused `extension_component' member. * src/truetype/ttgload.c: Include FT_TRUETYPE_DRIVER_H. (tt_get_metrics, TT_Hint_Glyph, TT_Process_Simple_Glyph, compute_glyph_metrics, tt_loader_init): Use `interpreter_version'. * src/truetype/ttinterp.c: Include FT_TRUETYPE_DRIVER_H. (SUBPIXEL_HINTING): New macro to check `interpreter_version' flag. Update all affected functions to use it. Use TT_INTERPRETER_VERSION_XXX where appropriate. * src/truetype/ttobjs.c: Include FT_TRUETYPE_DRIVER_H. (tt_driver_init): Initialize `interpreter_version'. * src/truetype/ttsubpix.c: Include FT_TRUETYPE_DRIVER_H. Use TT_INTERPRETER_VERSION_XXX where appropriate.
Werner Lemberg 89f50647 2013-03-14T17:50:49 */*: Use FT_ERR_EQ, FT_ERR_NEQ, and FT_ERR where appropriate. FT_Err_XXX and friends are no longer directly used in the source code.
Werner Lemberg e3c93015 2013-03-14T11:21:17 */*: Use FT_Err_Ok only. This is a purely mechanical conversion.
Werner Lemberg 059bc335 2013-03-14T10:27:35 */*: Use `FT_THROW'. This is essentially a mechanical conversion, adding inclusion of `FT_INTERNAL_DEBUG_H' where necessary, and providing the macros for stand-alone compiling modes of the rasterizer modules. To convert the remaining occurrences of FT_Err_XXX and friends it is necessary to rewrite the code. Note, however, that it doesn't harm if some cases are not handled since FT_THROW is a no-op.
Werner Lemberg 6b9034f0 2013-01-28T13:56:23 Formatting, comment improvements.
Infinality a5fe3595 2013-01-26T12:29:52 [truetype] Align more to ClearType whitepaper for sph.
David 'Digit' Turner 72447195 2013-01-25T00:36:35 [truetype] Fix C++ compilation. * src/truetype/ttsubpix.h: Updated. (SPH_X_SCALING_RULES_SIZE): Moved and renamed to... * src/truetype/ttsubpix.c (X_SCALING_RULES_SIZE): This. (sph_X_SCALING_Rules): Removed. (scale_test_tweak): Make function static. (sph_test_tweak_x_scaling): New function. * src/truetype/ttgload.c (TT_Process_Simple_Glyph): Updated.
Werner Lemberg e9f330ad 2013-01-24T09:12:56 [base] Make `FT_Hypot' really internal. * include/freetype/fttrigon.h (FT_Hypot): Move to... * include/freetype/internal/ftcalc.h: This file. * src/base/fttrigon.c (FT_Hypot): Move to... * src/base/ftcalc.c: This file. Include FT_TRIGONOMETRY_H. * src/truetype/ttgload.c: Don't include FT_TRIGONOMETRY_H.
Alexei Podtelezhnikov b6de8e66 2013-01-23T23:31:41 [base, truetype] New internal FT_Hypot function. * include/freetype/fttrigon.h (FT_Hypot): Declare it. * src/base/fttrigon.c (FT_Hypot): Define it. * src/truetype/ttgload.c (TT_Process_Composite_Component): Use it instead of explicit expressions. * src/truetype/ttinterp.c (Current_Ratio, Normalize): Use it instead of TT_VecLen. (TT_VecLen): Removed.
Werner Lemberg 71900980 2013-01-16T20:08:35 Minor.
David Turner 3a406127 2013-01-16T19:48:31 [truetype] Improve sub-pixel code. This patches fixes many issues with the ttsubpix implementation. 1. Data tables are defined, instead of declared, in the header, and thus copied into each source file that includes it. 2. These tables were defined as global, mutable, visible variables, and thus costing private RAM to every process that loads the library (> 50 KB / process, this is huge!). Additionally, this also made the library export the symbols completely needlessly. 3. Missing `sph_' and `SPH_' prefixes to some of the definitions. Note that this doesn't try to fix the incredibly inefficient storage format for the data tables used by the code. This one will require another pass in the future. * src/truetype/ttinterp.h (MAX_NAME_SIZE, MAX_CLASS_MEMBERS): Renamed to... (SPH_MAX_NAME_SIZE, SPH_MAX_CLASS_MEMBERS): This. Update all users. (SPH_TweakRule, SPH_ScaleRule): Decorate with `const' where appropriate. (Font_Class): Rename to... (SPH_Font_Class): This. Decorate with `const' where appropriate. * src/truetype/ttsubpix.h (scale_test_tweak, sph_test_tweak): Decorate arguments with `const' where appropriate. Move font tweaking tables to... * src/truetype/ttsubpic.c: This file and decorate them with `static' and `const' where appropriate. (X_SCALING_Rules, X_SCALING_RULES_SIZE): Renamed to... (spu_X_SCALING_Rules, SPH_X_SCALING_RULES_SIZE): This. Update all users.
Werner Lemberg 7d6dc907 2012-12-27T01:08:24 * src/truetype/ttgload.c (tt_loader_init): Add more tracing.
Werner Lemberg df018924 2012-12-20T06:07:33 Formatting.
Infinality 1749ae20 2012-12-18T07:23:09 [truetype] Minor performance enhancement.
Infinality 71f242c2 2012-12-16T19:52:01 [truetype ] Remove unusued code. Add minor fixes.
Werner Lemberg 06e31e9b 2012-08-27T09:35:22 [truetype] Fix compilation warning. * src/truetype/ttgload.c (IS_HINTED): Move macro to... * src/truetype/ttobjs.h: This header file.
Werner Lemberg b3953aa7 2012-06-28T06:23:12 [truetype] Set the `subpixel_positioned' flag unconditionally. This is how the code currently behaves. * src/truetype/ttgload.c (tt_loader_init): Do it.
Werner Lemberg 83c0ebab 2012-06-27T08:16:06 Fix conditional compilation. * include/freetype/internal/ftcalc.h (FT_MulDiv_No_Round): Don't enclose with `TT_USE_BYTECODE_INTERPRETER'; we now need the function elsewhere also. * src/autofit/afcjk.h: Use AF_CONFIG_OPTION_CJK. * src/truetype/ttgload.c (tt_loader_init): Fix compiler warning. * src/truetype/ttinterp.c (Ins_MSIRP): Fix compiler warning. * src/truetype/ttinterp.h: Use TT_CONFIG_OPTION_BYTECODE_INTERPRETER.
Infinality 79e36bae 2012-06-18T10:36:06 [truetype] Support subpixel hinting. This is the large, famous `Infinality' patch to support ClearType bytecode which has been available from http://www.infinality.net/blog/ for some time, and which has been refined over the last years. While still experimental, it is now mature enough to be included directly into FreeType. Most of the code is based on the ClearType whitepaper written by Greg Hitchcock http://www.microsoft.com/typography/cleartype/truetypecleartype.aspx which gives a detailed overview of the necessary changes to the Microsoft rasterizer so that older fonts are supported. However, a lot of details are still missing, and this patches provides a framework to easily handle rendering issues down to the glyph level of certain fonts. Note that ClearType support is not completely implemented! In particular, full support for the options `compatible_widths', `symmetrical_smoothing, and `bgr' (via the GETINFO bytecode instruction) is missing. * src/truetype/ttsubpix.c: New file, providing code to handle `tweaks', this is, rules for certain glyphs in certain fonts (including wildcards) which need a special treatment. * src/truetype/ttsubpix.h: New file, holding the tweaking rules. * include/freetype/config/ftoption.h, src/devel/ftoption.h (TT_CONFIG_OPTION_SUBPIXEL_HINTING): New macro. * include/freetype/internal/ftobjs.h (FT_PIX_FLOOR_GRID, FT_PIX_ROUND_GRID, FT_PIX_CEIL_GRID): New macros. * src/truetype/truetype.c [TT_USE_BYTECODE_INTERPRETER]: Include `ttsubpix.c'. * src/truetype/ttgload.c: Include `ttsubpix.h'. [All changes below are guarded by TT_CONFIG_OPTION_SUBPIXEL_HINTING.] (tt_get_metrics): Set tweak flags. (TT_Hint_Glyph): Call `FT_Outline_EmboldenXY' if necessary. (TT_Process_Simple_Glyph): Compensate emboldening if necessary. (compute_glyph_metrics): Handle `compatible widths' option. (tt_loader_init): Handle ClearType GETINFO information bits. * src/truetype/rules.mk (TT_DRC_SRC): Updated. * src/truetype/ttinterp.c: Include `ttsubpix.h'. [Where necessary, changes below are guarded by TT_CONFIG_OPTION_SUBPIXEL_HINTING.] (Direct_Move, Direct_Move_X): Extended. (Round_None, Round_To_Grid, Round_To_Half_Grid, Round_Down_To_Grid, Round_Up_To_Grid, Round_To_Double_Grid, Round_Super, Round_Super_45, SetSuperRound): Add parameter to handle the number of grid lines per pixel. (SET_SuperRound, ROUND_None, CUR_Func_round): Updated. (DO_SROUND, DOS45ROUND, DO_ODD, DO_EVEN): Updated. (DO_ROUND, DO_NROUND): Updated. (DO_RS): Take care of `Typeman' bytecode patterns. (Ins_FDEF): Add some debugging code. Commented out. (Ins_ENDF): Restore state. (Ins_CALL, Ins_LOOPCALL): Handle inline delta functions. (Ins_MD): Handle `Vacuform' rounds. (Move_Zp2_Point, Ins_SHPIX, Ins_MSIRP, Ins_MDAP, Ins_MIAP, Ins_MDRP, Ins_MIRP): Handle tweaks. (Ins_ALIGNRP): Add tweak guard. (Ins_IUP, Ins_DELTAP): Handle tweaks. (Ins_GETINFO): Handle new ClearType bits. (TT_RunIns): Handle tweaks. * src/truetype/ttinterp.h: Updated. (SPH_TweakRule, SPH_ScaleRule): New structures for tweaks. (TT_ExecContextRec): Add members for subpixel hinting support. * src/truetype/ttobjs.h (TT_DefRecord): Add `inline_delta' member.
Werner Lemberg 9c6d1ac3 2012-04-07T06:39:25 Remove compiler warning. * src/truetype/ttgload.c (TT_Load_Glyph) [!TT_CONFIG_OPTION_EMBEDDED_BITMAPS]: Access `glyph->face' directly.
Werner Lemberg 0fc8debe 2012-03-02T16:09:51 [truetype] Fix Savannah bug #35689. * src/truetype/ttgload.c (TT_Load_Simple_Glyph): Check first outline point.
Werner Lemberg 9290fa90 2012-02-29T17:29:07 [truetype] Remove redundant check. * src/truetype/ttgload.c (TT_Load_Simple_Glyph): Remove reduntant second check for ordered contour start points.
Behdad Esfahbod 8c82ec5b 2011-04-21T08:21:37 Always ignore global advance. This makes FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH redundant, deprecated, and ignored. The new behavior is what every major user of FreeType has been requesting. Global advance is broken in many CJK fonts. Just ignoring it by default makes most sense. * src/truetype/ttdriver.c (tt_get_advances), src/truetype/ttgload.c (TT_Get_HMetrics, TT_Get_VMetrics, tt_get_metrics, compute_glyph_metrics, TT_Load_Glyph), src/truetype/ttgload.h: Implement it. * docs/CHANGES: Updated.
Werner Lemberg 6e3fee0b 2011-03-21T09:28:52 Typo.
Werner Lemberg 18931a5a 2011-02-01T07:08:43 [truetype] FT_LOAD_PEDANTIC now affects `prep' and `fpgm' also. * src/truetype/ttgload.c (tt_loader_init): Handle `FT_LOAD_PEDANTIC'. * src/truetype/ttobjs.c (tt_size_run_fpgm, tt_size_run_prep, tt_size_init_bytecode, tt_size_ready_bytecode): New argument to handle pedantic mode. * src/truetype/ttobjs.h: Updated.
Werner Lemberg 91a97164 2011-01-30T20:12:54 Whitespace.
Werner Lemberg 6abb9232 2010-09-14T09:02:10 Improve tracing messages. * src/truetype/ttinterp.c (TT_RunIns): Improve wording of tracing message. * src/truetype/ttobjs.c (tt_size_run_fpgm, tt_size_run_prep): Add tracing message. * src/truetype/ttgload.c (tt_loader_init): Add tracing message. * src/cache/ftcsbits.c (ftc_snode_load): Emit tracing message if glyph doesn't fit into a small bitmap container.
Werner Lemberg ae425e51 2010-06-29T12:31:08 Fix minor tracing issues. * src/cff/cffgload.c, src/truetype/ttgload.c: Adjust tracing levels.
Werner Lemberg f765e440 2010-06-24T10:34:29 */*: Use module specific error names where appropriate.
Werner Lemberg 6da023d1 2010-05-20T15:38:00 TrueType: Make FreeType ignore maxSizeOfInstructions in `maxp'. Acroread does the same. * src/truetype/ttgload.c (TT_Process_Composite_Glyph): Call `Update_Max' to adjust size of instructions array if necessary and add a rough safety check. (load_truetype_glyph): Save `loader->byte_len' before recursive call. * src/truetype/ttinterp.h, src/truetype/ttinterp.c (Update_Max): Declare it as FT_LOCAL.
John Tytgat 8c4cce52 2010-04-05T08:22:22 Fix Savannah bug #29404. * src/truetype/ttgload.c: Revert change 2752bd1a (check on bit 1 of `head' table of TrueType fonts).
Chris Liddell 10cf3887 2010-02-18T17:09:30 Fix Savannah bug #28905. Initialize phantom points before calling the incremental interface to update glyph metrics. * src/truetype/ttgload.c (tt_get_metrics_incr_overrides) [FT_CONFIG_OPTION_INCREMENTAL]: New function, split off from... (tt_get_metrics): This. Updated. (load_truetype_glyph): Use tt_get_metrics_incr_overrides.
Ken Sharp 980b76ea 2010-02-10T07:02:43 Really fix Savannah bug #28678 (part 1). After long discussion, we now consider the character width vector (wx,wy) returned by the `sbw' Type 1 operator as being part of *one* direction only. For example, if you are using the horizontal writing direction, you get the horizontal and vertical components of the advance width for this direction. Note that OpenType and CFF fonts don't have such a vertical component; instead, the GPOS table can be used to generate two-dimensional advance widths (but this isn't handled by FreeType). * include/freetype/ftincrem.h (FT_Incremental_MetricsRec): Add `advance_v' field to hold the vertical component of the advance value. * src/truetype/ttgload.c (tt_get_metrics), src/cff/cffgload.c (cff_slot_load), src/type1/t1gload.c (T1_Parse_Glyph_And_Get_Char_String), src/cid/cidgload.c (cid_load_glyph): Use it.
Werner Lemberg fe6da50d 2010-01-05T10:10:15 Thinkos.
Werner Lemberg 3445e4f9 2010-01-04T15:53:27 Make incremental interface work with TrueType fonts. * src/truetype/ttgload.c (load_truetype_glyph): Don't check `glyf_offset' if incremental interface is used.
Werner Lemberg 9045f5bd 2009-12-03T05:57:30 Fix compiler warnings. * src/truetype/ttgload.c (tt_get_metrics): Put `Exit' label into the proper preprocessor conditional. * src/pfr/pfrobjs.c (pfr_slot_load): Pacify gcc.
Werner Lemberg c4b22144 2009-11-15T10:10:00 Add tracing messages for advance values. * src/base/ftobjs.c (FT_Load_Glyph), src/truetype/ttgload.c (TT_Get_HMetrics, TT_Get_VMetrics): Do it.
Werner Lemberg c0aeef45 2009-11-08T07:58:05 Fix compiler warning. Reported by Jeremy Manson <jeremy.manson@gmail.com>. * src/truetype/ttgload.c (load_truetype_glyph): Initialize `error'.
Werner Lemberg f186ba68 2009-11-03T15:46:35 Return correct `linearHoriAdvance' value for embedded TT bitmaps too. Reported by Jeremy Manson <jeremy.manson@gmail.com>. src/truetype/ttgload.c (load_truetype_glyph): Add parameter to quickly load the glyph header only. Update all callers. (tt_loader_init): Add parameter to quickly load the `glyf' table only. Update all callers. (TT_Load_Glyph): Compute linear advance values for embedded bitmap glyphs too.
Werner Lemberg 422210be 2009-11-03T08:11:02 Improve code readability. * src/ttgload.c (load_truetype_glyph): Move metrics calculation to... (tt_get_metrics): This new function.
Werner Lemberg ac0d52d8 2009-11-02T08:35:24 Whitespace.
Werner Lemberg d30062d2 2009-09-08T07:06:54 Whitespace.
Bram Tassyns 4694ea2b 2009-09-02T13:06:33 Improve vertical metrics calculation (Savannah bug #27364). The calculation of `vertBearingX' is not defined in the OTF font spec so FreeType does a `best effort' attempt. However, this value is defined in the PDF and PostScript specs, and that algorithm is better than the one FreeType currently uses: FreeType: Use the middle of the bounding box as the X coordinate of the vertical origin. Adobe PDF spec: Use the middle of the horizontal advance vector as the X coordinate of the vertical origin. FreeType's algorithm goes wrong if you have a really small glyph (like the full-width, circle-like dot at the end of the sentence, as used in CJK scripts) with large bearings. With the FreeType algorithm this dot gets centered on the baseline; with the PDF algorithm it gets the correct location (in the top right). Note that this is a serious issue, it's like printing the dot at the end of a Roman sentence at the center of the textline instead of on the baseline like it should. So i believe the PDF spec's algorithm should be used in FreeType as well. The `vertBearingY' value for such small glyphs is also very strange if no `vmtx' information is present, since the height of the bbox is not representable for the height of the glyph visually (the whitespace up to the baseline is part of the glyph). The fix also includes some code for a better estimate of `vertBearingY'. * src/base/ftobjs.c (ft_synthesize_vertical_metrics): `vertBearingX' is now calculated as described by the Adobe PDF Spec. Estimate for `vertBearingY' now works better for small glyphs completely above or below the baseline into account. * src/cff/cffgload.c (cff_slot_load): `vertBearingX' is now calculated as described by the Adobe PDF Spec. Vertical metrics information was always ignored when FT_CONFIG_OPTION_OLD_INTERNALS was not defined. * src/truetype/ttgload.c (compute_glyph_metrics): `vertBearingX' is now calculated as described by the Adobe PDF Spec.
suzuki toshiya 9206eba2 2009-08-01T00:32:17 truetype: Truncate the deltas of composite glyph at 16-bit values.
suzuki toshiya 1b6f1d20 2009-08-01T00:32:16 truetype: Truncate the instructions upto 16-bit per a glyph.
suzuki toshiya 9fc40943 2009-08-01T00:32:14 truetype: Cast the scaling params to 32-bit for LP64 system.
Werner Lemberg 858abbed 2009-06-26T06:15:41 For warning messages, replace FT_ERROR with FT_TRACE0. FT_ERROR is now used only if a function produces a non-zero `error' value. Formatting, improving and harmonizing debug strings.
Werner Lemberg 72271140 2009-06-18T15:42:52 Fix B/W rasterization of subglyphs with different drop-out modes. Normally, the SCANMODE instruction (if present) to set the drop-out mode in a TrueType font is located in the `prep' table only and thus valid for all glyphs. However, there are fonts like `pala.ttf' which additionally contain this instruction in the hinting code of some glyphs (but not all). As a result it can happen that a composite glyph needs multiple drop-out modes for its subglyphs since the rendering state gets reset for each subglyph. FreeType collects the hinted outlines from all subglyphs, then it sends the data to the rasterizer. It also sends the drop-out mode -- after hinting has been applied -- and here is the error: It sends the drop-out mode of the last subglyph only; drop-out modes of all other subglyphs are lost. This patch fixes the problem; it adds a second, alternative mechanism to pass the drop-out mode: For each contour, the rasterizer now checks the first `tags' array element. If bit 2 is set, bits 5-7 contain the contour's drop-out mode, overriding the global drop-out mode. * include/freetype/ftimage.h (FT_CURVE_TAG_HAS_SCANMODE): New macro. * src/truetype/ttgload.c (TT_Hint_Glyph): Store drop-out mode in `tags[0]'. * src/raster/ftraster.c (Flow_Up, Overshoot_Top, Overshoot_Bottom): Use bits 3-5 instead of 0-2. (New_Profile): Set the drop-out mode in the profile's `flags' field. (Decompose_Curve): Check `tags[0]' and set `dropOutControl' if necessary. (Vertical_Sweep_Drop, Horizontal_Sweep_Drop, Horizontal_Gray_Sweep_Drop, Draw_Sweep): Use the profile's drop-out mode.
Werner Lemberg 780d7e05 2009-06-17T06:45:20 Minor simplification.
Werner Lemberg 1474f439 2008-12-09T06:51:56 Really fix Savannah bug #25010: An SFNT font with neither outlines nor bitmaps can be considered as containing space `glyphs' only. * src/truetype/ttpload.c (tt_face_load_loca): Handle the case where a `glyf' table is missing. * src/truetype/ttgload.c (load_truetype_glyph): Abort if we have no `glyf' table but a non-zero `loca' entry. (tt_loader_init): Handle missing `glyf' table. * src/base/ftobjs.c (FT_Load_Glyph): Undo change 2008-12-05. * src/sfnt/sfobjs.c (sfnt_load_face): A font with neither outlines nor bitmaps is scalable.
Werner Lemberg 35ae574a 2008-10-02T10:40:52 Add casts for stupid compilers. Reported by Graham.
David Turner 28534d61 2008-09-01T21:35:21 * include/freetype/ftadvanc.h, src/base/ftadvanc.c, include/freetype/config/ftheader.h, include/freetype/freetype.h, src/base/Jamfile, src/base/rules.mk, src/cff/cffdrivr.c, src/cff/cffgload.c, src/cff/cffgload.h, src/truetype/ttdriver.c, src/truetype/ttgload.h, src/truetype/ttgload.c, src/type1/t1driver.c, src/type1/t1gload.h, src/type1/t1gload.c: Add a new header named FT_ADVANCES_H declaring some new APIs to extract the advances of one or more glyphs without necessarily loading their outlines. Also provide 'fast loaders' for the TrueType, Type1 and CFF font drivers (more to come later) * autogen.sh: add checks for minimum version of the 'autotools' stuff.
Werner Lemberg 745a4f42 2008-06-22T22:41:24 * src/truetype/ttgload.c (TT_Load_Glyph): Protect bytecode stuff with IS_HINTED. * docs/CHANGES: Updated.
Werner Lemberg 5df5dbb7 2008-06-22T13:40:08 Enable access to the various dropout rules of the B&W rasterizer. Pass dropout rules from the TT bytecode interpreter to the rasterizer; temporarily this is enabled only if `USE_SCAN_CONVERSION_RULES' is defined. * include/freetype/ftimage.h (FT_OUTLINE_SMART_DROPOUTS, FT_OUTLINE_EXCLUDE_STUBS): New flags for for FT_Outline. * src/raster/ftraster.c (Vertical_Sweep_Drop, Horizontal_Sweep_Drop, Horizontal_Gray_Sweep_Drop): Use same mode numbers as given in the OpenType specification. Fix mode 4 computation. (Render_Glyph, Render_Gray_Glyph): Handle new outline flags. * src/truetype/ttgload.c (TT_Load_Glyph) [USE_SCAN_CONVERSION_RULES]: Convert scan conversion mode to FT_OUTLINE_XXX flags. * src/truetype/ttinterp.c (Ins_SCANCTRL): Enable ppem check.
Werner Lemberg 0c52faa9 2008-05-25T20:04:56 add missing casting
Werner Lemberg 57a94c48 2008-05-25T16:49:29 whitespace
Werner Lemberg ffa49657 2008-05-25T12:43:57 * src/truetype/ttgload.c (load_truetype_glyph): Move initialization of the graphics state for subglyphs to... (TT_Hint_Glyph): This function. Hinting instructions for a composite glyph apparently refer to the just hinted subglyphs, not the unhinted, unscaled outline. This seems to fix Savannah bugs #20973 and (at least partially) #23310.
Werner Lemberg 89d64fa6 2008-05-17T20:06:13 * src/truetype/ttgload.c (TT_Load_Simple_Glyph): Handle zero-contour glyphs correctly. Patch from Savannah bug #23277.
Werner Lemberg bf391cb8 2008-01-10T08:47:08 * src/truetype/ttgload.c (load_truetype_glyph): Handle the case where the number of contours in a simple glyph is zero (and which does contain an entry in the `glyf' table). This fixes Savannah bug #21990.
Werner Lemberg bd7e1c3c 2007-12-06T17:17:30 Pass options from one configure script to another as-is (not expanded). This is needed for options like --includedir='${prefix}/include'. * builds/unix/detect.mk, configure: Prevent argument expansion in call to the (real) `configure' script. * src/truetype/ttgload.c (load_truetype_glyph): Fix compilation if TT_USE_BYTECODE_INTERPRETER isn't defined. There exist CFFs which contain opcodes for the Type 1 operators `hsbw' and `closepath' which are both invalid in Type 2 charstrings. However, it doesn't harm to support them. * src/cff/cffgload.c (CFF_Operator): Add `cff_op_hsbw' and `cff_op_closepath.' (cff_argument_counts): Ditto. (cff_decoder_parse_charstrings): Handle Type 1 opcodes 9 (closepath) and 13 (hsbw) which are invalid in Type 2 charstrings.
Werner Lemberg d21fe6e5 2007-07-10T23:10:39 Really restore changes introduced in revision 1.178.
Werner Lemberg 0f6f367e 2007-07-04T19:57:45 Better maxComponentDepth test.
Werner Lemberg 3033f436 2007-07-04T14:12:19 * src/truetype/ttgload.c (load_truetype_glyph): Always allow a recursion depth of 1. This was the maximum value in TrueType 1.0, and some older fonts don't set this field correctly. * src/gxvalid/gxvmort1.c (gxv_mort_subtable_type1_substTable_validate): Fix tracing message.
David Turner 0ba89912 2007-07-01T09:34:04 fix a small bug in the TrueType loader that created distortion in the result of bytecode-hinted text. Werner, feel free to package 2.3.5 now :-)
David Turner 8f626b04 2007-06-22T22:22:38 fix stupid typo that prevented the truetype loader from working correctly
Werner Lemberg e12ed563 2007-06-17T05:31:23 * src/tools/ftrandom.c (font_size): New global variable. (TestFace): Use it. (main): Handle new option `--size' to set `font_size'. (Usage): Updated. Formatting.
David Turner 815911ae 2007-06-16T17:07:20 * src/truetype/ttgload.c (TT_Load_Simple_Glyph): check the well-formedness of the contours array when loading a glyph * src/truetype/ttinterp.c (Ins_IP): check argument ranges to reject bogus operations properly
Werner Lemberg f6c120f8 2007-06-11T04:55:58 * docs/CHANGES: Document FT_Face_CheckTrueTypePatents). Formatting, reformulations.
David Turner 7fa30ee8 2007-06-11T00:55:23 remove compiler warning
David Turner 5f5e5446 2007-06-11T00:18:00 slight speed-up of the TrueType glyph loader
Werner Lemberg 6e2f9d5d 2007-06-05T06:58:48 Improve tracing messages.
Werner Lemberg 1c8980ef 2007-05-25T07:11:12 * docs/CHANGES: Updated. Formatting.
David Turner 7890686d 2007-05-22T14:08:09 fix crash when not using the bytecode interpreter with TrueType fonts
Werner Lemberg 6f99c888 2007-05-19T07:01:49 * src/truetype/ttgload.c (load_truetype_glyph): Save graphics state before handling subglyphs so that it can be reinitialized each time. This fixes Savannah bug #19859.
Werner Lemberg d0692468 2007-05-16T15:48:02 Oops! Incorrect application of a patch...
Werner Lemberg 607dec79 2007-05-15T06:49:37 * src/autofit/afcjk.c (af_cjk_hints_compute_edges): Remove unused variable. * src/autofit/afloader.c (af_loader_load_g): Ditto. * src/base/ftobjs.c (ft_validator_error): Use `ft_jmp_buf'. (open_face_from_buffer): Initialize `stream'. (FT_Request_Metrics): Remove unused variable. Remove redundant `break' statements. (FT_Get_Track_Kerning): Remove unused variable. * src/psaux/afmparse.c (afm_parse_track_kern, afm_parse_kern_pairs, afm_parse_kern_data): Remove redundant `break' statements. (afm_parser_parse): Ditto. Don't use uninitialized variables. * src/psnames/psmodule.c (VARIANT_BIT): Define as unsigned long. Use `|' operator instead of `^' to set it. Update all users. * src/sfnt/ttcmap.c (tt_face_build_cmaps): Use `ft_jmp_buf'. * src/sfnt/ttkern.c (tt_face_load_kern): Remove unused variable. * src/truetype/ttgload.c (TT_Load_Simple_Glyph): Remove redundant comparison. (TT_Process_Simple_Glyph): Use FT_UInt for `n_points' and `i'. (TT_Load_Glyph): Remove unused variable.
Werner Lemberg cc712a24 2007-04-27T17:16:50 * src/truetype/ttgload.c (TT_Load_Simple_Glyph): Check for negative number of points in contours. Problem reported by Victor Stinner <victor.stinner@haypocalc.com>. (TT_Process_Simple_Glyph): Synchronize variable types.
Werner Lemberg f4a52a6c 2007-04-09T08:40:11 * src/truetype/ttgload.c (load_truetype_glyph): Save and restore memory stream to avoid a crash with the incremental memory interface (Savannah bug #19260).
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