April 2007 - Boost - lists.boost.org

[Boost-bugs] [ boost-Bugs-1700790 ] grammatical error in error message
by SourceForge.net 14 Apr '07

14 Apr '07

Bugs item #1700790, was opened at 2007-04-14 14:43 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=107586&aid=1700790&group_… Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: test Group: release 1.34.0 Status: Open Resolution: None Priority: 5 Private: No Submitted By: Nobody/Anonymous (nobody) Assigned to: Beman Dawes (beman_dawes) Summary: grammatical error in error message Initial Comment: BOOST_TEST_MESSAGE( "Test case has less failures then expected" ); Should be BOOST_TEST_MESSAGE("Test case has fewer failures than expected" ); The word "fewer" is needed because the statement is dealing with quantity of distinct objects or concepts. The word "less" would be used for volumes or amount of one distinct object or concept. The word "then" is for if-then statments not for comparison. in the file results_collector.ipp revision 1.5. Sincerely, Mark Barkell ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=107586&aid=1700790&group_… ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Boost-bugs mailing list Boost-bugs(a)lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/boost-bugs

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boost::freetype - extension for boost::gil
by Tom Brinkman 14 Apr '07

14 Apr '07

>> source-code I'm working on it again this weekend. If anyone wants to see it now, just email me. Otherwise, I'll upload an updatted version by monday. An earlier provided link does not work. Here is where the gil extension code is being hosted. http://code.google.com/p/gil-contributions/

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boost::freetype - extension for boost::gil
by Tom Brinkman 14 Apr '07

14 Apr '07

The adobe developers have indicated that they will be distributing the "gil" extensions with their distribution. In your opinion, what level of scrutiny should the "gil" extensions recieve? Are full reviews warrented for the smaller extensions, which is where I would include my freetype wrapper.

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[optional] New RC_1_34_0 regression
by Richard Smith 14 Apr '07

14 Apr '07

I've just found what I believe to be a new regression on the boost RC_1_34_0 branch relative to the 1.33.1 release. The example below is a simplified extract of some real world where the behaviour of boost::none silently changes. #include <string> #include <iostream> #include <boost/optional.hpp> #include <boost/none.hpp> namespace sql { void literal( std::ostream& os, int i ) { os << i; } void literal( std::ostream& os, boost::optional<std::string> const& str ) { // escaping removed for clarity if (str) os << '"' << str.get() << '"'; else os << "NULL"; } } int main() { sql::literal( std::cout, boost::none ); } In 1.33.1, this prints out 'NULL' (which is what I would naively expect); on 1.34, it prints '0'. In both cases compiles cleanly in gcc 4.1.1. Sorry if this is a known regression, but having just seen the email saying RC_1_34_0 is down to zero regressions, I thought a quick-heads up was in order. Richard

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[math toolkit] Formal Review today, April 11, through April 20
by Tom Brinkman 14 Apr '07

14 Apr '07

Its entirely up to Matthias. If he thinks more time is needed for a proper review of the library, beyond even the extension date, it appropriate to add days, as many as are needed. If it gets to long however, we might consider overlapping it with the next review, in this case the GUID library. The "ten" day period is just a rule of thumb and entirely flexible. Large libraries will often need more days for the review.

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Boost inspection notification (2007-04-14/RC_1_34_0) *LC*
by Rene Rivera 14 Apr '07

14 Apr '07

Boost Inspection Report Run Date: 16:05:12 UTC, Saturday 14 April 2007 An inspection program <http://www.boost.org/tools/inspect/index.html> checks each file in the current Boost CVS for various problems, generating this as output. Problems detected include tabs in files, missing copyrights, broken URL's, and similar misdemeanors. Totals: 11450 files scanned 908 directories scanned (including root) 1051 problems reported Problem counts: 653 files missing Boost license info or having wrong reference text 398 files missing copyright notice Summary: any (1) archive (1) build (68) concept_check (22) conversion (5) doc (1) filesystem (2) function (1) graph (1) inspect (1) integer (9) lambda (10) libs (6) logic (2) math (1) more (13) mpl (417) multi_array (13) numeric (188) optional (1) people (4) program_options (35) property_map (15) ptr_container (8) python (6) rational (5) regex (4) regression (118) release (2) serialization (16) signals (2) smart_ptr (8) test (3) timer (1) tr1 (2) tuple (5) utility (12) variant (42) Details: *L* missing Boost license info, or wrong reference text *C* missing copyright notice |any| libs/any/doc/ any.xml: *L* |archive| boost/archive/detail/ utf8_codecvt_facet.hpp: *L* |build| tools/build/v2/build/ build-request.jam: *L* modifiers.jam: *L* tools/build/v2/doc/ Jamfile.v2: *C* *L* 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*C* *L* howto.xml: *C* *L* overview.xml: *C* *L* post_review_plan.txt: *C* *L* todo.txt: *C* *L* tutorial.xml: *C* *L* libs/program_options/example/ Jamfile.v2: *C* *L* libs/program_options/test/ Jamfile.v2: *C* *L* program_options_size_test.py: *C* *L* ucs2.txt: *C* *L* utf8.txt: *C* *L* winmain.py: *C* *L* |property_map| libs/property_map/ LvaluePropertyMap.html: *L* ReadWritePropertyMap.html: *L* ReadablePropertyMap.html: *L* WritablePropertyMap.html: *L* associative_property_map.html: *L* const_assoc_property_map.html: *L* libs/property_map/doc/ dynamic_property_map.html: *C* *L* dynamic_property_map.rst: *C* *L* libs/property_map/ example2.cpp: *L* identity_property_map.html: *L* iterator_property_map.html: *L* property_map.html: *L* vector_property_map.html: *L* |ptr_container| libs/ptr_container/doc/ default.css: *L* intro.xml: *C* *L* ptr_container.xml: *L* libs/ptr_container/test/ Jamfile.v2: *C* *L* sequence_point.cpp: *C* *L* |python| libs/python/doc/ internals.html: *L* 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instructions.rst: *C* *L* tools/regression/xsl_reports/test/ common.py: *C* *L* expected_results.xml: *C* *L* generate_test_results.py: *C* *L* generate_test_results_v1.py: *C* *L* restrict_to_library.xsl: *C* *L* run_notes_regression.py: *C* *L* run_v1.py: *C* *L* tools/regression/xsl_reports/test/test-components/ test.py: *C* *L* tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/ compile-fail.xml: *C* *L* completed.xml: *C* *L* tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/ compile-fail.xml: *C* *L* completed.xml: *C* *L* lib.xml: *C* *L* misfire.xml: *C* *L* no-run.xml: *C* *L* run_pyd.xml: *C* *L* test-case.xml: *C* *L* tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/ lib.xml: *L* misfire.xml: *C* *L* no-run.xml: *C* *L* run_pyd.xml: *C* *L* test-case.xml: *L* test-driver.xsl: *C* *L* tools/regression/xsl_reports/test/test-components/test_re_match/expected/ test_re_match.xml: *C* *L* 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*C* *L* tools/regression/xsl_reports/xsl/v2/ expected_to_1_33_format.xsl: *C* *L* |release| tools/release/ utils.py: *C* *L* |serialization| libs/serialization/doc/ style.css: *C* *L* libs/serialization/example/ demo_output.txt: *C* *L* demo_save.xml: *C* *L* demofile.txt: *C* *L* libs/serialization/test/ run_archive_test.bat: *C* *L* runtest.bat: *C* *L* runtest.sh: *C* *L* libs/serialization/vc7ide/ readme.txt: *C* *L* |signals| libs/signals/doc/ tutorial.xml: *C* *L* |smart_ptr| libs/smart_ptr/ compatibility.htm: *L* scoped_array.htm: *L* scoped_ptr.htm: *L* shared_array.htm: *L* shared_ptr.htm: *L* smart_ptr.htm: *L* smarttests.htm: *L* weak_ptr.htm: *L* |test| boost/test/utils/runtime/cla/detail/ argument_value_usage.hpp: *L* libs/test/test/auto-link-test/ run_bjam.bat: *C* *L* |timer| libs/timer/ timer.htm: *L* |tr1| boost/tr1/ tuple.hpp: *C* *L* |tuple| libs/tuple/doc/ design_decisions_rationale.html: *L* tuple_advanced_interface.html: *L* tuple_users_guide.html: *L* 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libs/variant/test/ Jamfile.v2: *L*

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Boost inspection notification (2007-04-14/RC_1_34_0) *X*
by Rene Rivera 14 Apr '07

14 Apr '07

Boost Inspection Report Run Date: 16:05:05 UTC, Saturday 14 April 2007 An inspection program <http://www.boost.org/tools/inspect/index.html> checks each file in the current Boost CVS for various problems, generating this as output. Problems detected include tabs in files, missing copyrights, broken URL's, and similar misdemeanors. Totals: 11450 files scanned 908 directories scanned (including root) 198 problems reported Problem counts: 0 files with invalid line endings 0 bookmarks with invalid characters 3 invalid urls 107 broken links 21 unlinked files 22 file/directory names issues 1 files with tabs 9 violations of the Boost min/max guidelines 35 usages of unnamed namespaces in headers (including .ipp files) Summary: archive (3) bind (1) boost-root (3) build (1) date_time (1) doc (2) filesystem (37) graph (2) iostreams (3) lambda (3) math (8) more (1) mpl (4) multi_array (2) ptr_container (1) python (10) regex (1) regression (32) serialization (1) test (81) type_traits (1) Details: *R* invalid (cr only) line-ending *A* invalid bookmarks, invalid urls, broken links, unlinked files *N* file/directory names issues *T* tabs in file *M* uses of min or max that have not been protected from the min/max macros, or unallowed #undef-s *U* unnamed namespace in header |archive| boost/archive/basic_streambuf_locale_saver.hpp: *N* name exceeds 31 characters boost/archive/impl/xml_wiarchive_impl.ipp: *U* unnamed namespace at line 53 boost/archive/iterators/remove_whitespace.hpp: *U* unnamed namespace at line 57 |bind| boost/bind/placeholders.hpp: *U* unnamed namespace at line 25 |boost-root| index.htm: *A* broken link: doc/hmtl/date_time.html *A* broken link: doc/hmtl/date_time/details.html#changes *A* broken link: more/BoostCon07.html |build| tools/build/v2/test/test_system.html: *A* unlinked file |date_time| libs/date_time/xmldoc/date_time_docs_howto.html: *A* unlinked file |doc| doc/html/boost_math/inverse_complex.html: *A* unlinked file doc/html/jam.html: *A* unlinked file |filesystem| libs/filesystem/doc/do-list.htm: *A* invalid URL (hardwired file): file://?/ *A* invalid URL (hardwired file): file://?/UNC/ libs/filesystem/doc/i18n.html: *A* broken link: convenience.htm#basic_recursive_directory_iterator *A* broken link: exception.htm *A* broken link: operations.htm *A* broken link: operations.htm#Do-the-right-thing *A* broken link: operations.htm#is_directory *A* broken link: operations.htm#is_file *A* broken link: operations.htm#status libs/filesystem/doc/index.htm: *A* broken link: ../build/Jamfile *A* broken link: convenience.htm *A* broken link: fstream.htm *A* broken link: operations.htm#create_directory *A* broken link: operations.htm#create_hard_link *A* broken link: operations.htm#current_path *A* broken link: operations.htm#directory_iterator *A* broken link: operations.htm#equivalent *A* broken link: operations.htm#file_size *A* broken link: operations.htm#initial_path *A* broken link: operations.htm#is_file *A* broken link: operations.htm#is_symlink *A* broken link: operations.htm#status *A* broken link: operations.htm#symlink_status *A* broken link: path.htm#Canonical *A* broken link: path.htm#Grammar *A* broken link: path.htm#Normalized *A* broken link: path.htm#default_name_check *A* broken link: path.htm#name_check_mechanism *A* broken link: path.htm#normalize *A* broken link: path.htm#operator_eq *A* broken link: path.htm#synopsis libs/filesystem/doc/portability_guide.htm: *A* broken link: path.htm#name_check_typedef libs/filesystem/doc/tr2_proposal.html: *A* invalid URL (hardwired file): file:///C|/boost/site/libs/filesystem/doc/operations.htm#complete_note |graph| libs/graph/example/file_dependencies.cpp: *M* violation of Boost min/max guidelines on line 139 libs/graph/test/serialize.cpp: *T* |iostreams| libs/iostreams/doc/acknowledgments.html: *A* unlinked file libs/iostreams/doc/concepts/multi-character.html: *A* unlinked file libs/iostreams/doc/installation.html: *A* broken link: ../../../tools/build/v1/build_system.htm |lambda| boost/lambda/core.hpp: *U* unnamed namespace at line 62 boost/lambda/detail/lambda_functors.hpp: *U* unnamed namespace at line 25 boost/lambda/exceptions.hpp: *U* unnamed namespace at line 24 |math| libs/math/test/common_factor_test.cpp: *M* violation of Boost min/max guidelines on line 146 *M* violation of Boost min/max guidelines on line 147 *M* violation of Boost min/max guidelines on line 193 *M* violation of Boost min/max guidelines on line 194 |more| more/separate_compilation.html: *A* broken link: ../libs/config/test/link/test/Jamfile.v2 |mpl| boost/mpl/alias.hpp: *U* unnamed namespace at line 17 libs/mpl/doc/refmanual/for-each.html: *A* broken link: ./value-initialized.html |multi_array| boost/multi_array/base.hpp: *U* unnamed namespace at line 69 libs/multi_array/test/generative_tests.hpp: *U* unnamed namespace at line 57 |ptr_container| libs/ptr_container/doc/tutorial_example.html: *A* unlinked file |python| libs/python/doc/building.html: *A* broken link: ../../../tools/build/v1/build_system.htm *A* broken link: ../../../tools/build/v1/build_system.htm#user_globals *A* broken link: ../../../tools/build/v1/build_system.htm#variants libs/python/doc/tutorial/doc/html/python/hello.html: *A* broken link: ../../../../../example/tutorial/Jamrules libs/python/doc/tutorial/index.html: *A* broken link: ../../../LICENSE_1_0.txt libs/python/doc/v2/May2002.html: *A* broken link: ../../../../tools/build/v1/build_system.htm *A* broken link: ../../../../tools/build/v1/gen_aix_import_file.py libs/python/doc/v2/faq.html: *A* broken link: ../../../../tools/build/v1/build_system.htm |regex| libs/regex/performance/input.html: *A* unlinked file |regression| regression/.htaccess: *N* leading character of ".htaccess" is not alphabetic tools/regression/test/test-cases/incremental/bjam.log.1: *N* name contains more than one dot character ('.') tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/compile-fail.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/completed.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/compile-fail.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/completed.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/lib.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/misfire.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/no-run.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/run_pyd.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/expected/test-case.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/test-case.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_is_test_log_complete/test-driver.xsl: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_re_match/expected/test_re_match.xml: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ tools/regression/xsl_reports/test/test-components/test_test_case_status/explicit-failures-markup.xml.test: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ *N* name contains more than one dot character ('.') *N* name exceeds 31 characters tools/regression/xsl_reports/test/test-components/test_test_structure/explicit-failures-markup.xml.test: *N* file path will exceed 100 characters in a directory tree with a root of the form boost_X_XX_X/ *N* name contains more than one dot character ('.') *N* name exceeds 31 characters tools/regression/xsl_reports/xsl/html/issues_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/html/library_developer_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/html/library_user_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/html/make_tinyurl.html: *A* unlinked file tools/regression/xsl_reports/xsl/html/summary_developer_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/html/summary_user_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/v2/html/issues_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/v2/html/library_developer_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/v2/html/library_user_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/v2/html/make_tinyurl.html: *A* unlinked file tools/regression/xsl_reports/xsl/v2/html/summary_developer_legend.html: *A* unlinked file tools/regression/xsl_reports/xsl/v2/html/summary_user_legend.html: *A* unlinked file |serialization| libs/serialization/src/basic_xml_grammar.ipp: *U* unnamed namespace at line 43 |test| boost/test/floating_point_comparison.hpp: *U* unnamed namespace at line 206 *U* unnamed namespace at line 228 boost/test/impl/cpp_main.ipp: *U* unnamed namespace at line 42 boost/test/impl/exception_safety.ipp: *U* unnamed namespace at line 400 boost/test/impl/framework.ipp: *U* unnamed namespace at line 199 boost/test/impl/plain_report_formatter.ipp: *U* unnamed namespace at line 45 boost/test/impl/progress_monitor.ipp: *U* unnamed namespace at line 38 boost/test/impl/results_collector.ipp: *U* unnamed namespace at line 106 boost/test/impl/results_reporter.ipp: *U* unnamed namespace at line 48 boost/test/impl/unit_test_log.ipp: *U* unnamed namespace at line 79 boost/test/impl/unit_test_monitor.ipp: *U* unnamed namespace at line 35 boost/test/impl/unit_test_parameters.ipp: *U* unnamed namespace at line 50 boost/test/results_collector.hpp: *U* unnamed namespace at line 40 boost/test/test_tools.hpp: *U* unnamed namespace at line 262 boost/test/utils/iterator/token_iterator.hpp: *U* unnamed namespace at line 166 boost/test/utils/named_params.hpp: *U* unnamed namespace at line 216 boost/test/utils/runtime/cla/dual_name_parameter.ipp: *U* unnamed namespace at line 43 boost/test/utils/runtime/cla/modifier.hpp: *U* unnamed namespace at line 34 boost/test/utils/runtime/env/modifier.hpp: *U* unnamed namespace at line 34 boost/test/utils/runtime/file/config_file.hpp: *U* unnamed namespace at line 169 *U* unnamed namespace at line 64 *U* unnamed namespace at line 74 boost/test/utils/runtime/file/config_file_iterator.hpp: *U* unnamed namespace at line 68 boost/test/utils/trivial_singleton.hpp: *U* unnamed namespace at line 52 *U* unnamed namespace at line 61 libs/test/build/msvc71_proj/config_file_iterator_test.vcproj: *N* name exceeds 31 characters libs/test/doc/components/prg_exec_monitor/compilation.html: *A* broken link: ../../../build/Jamfile libs/test/doc/components/prg_exec_monitor/index.html: *A* broken link: ../../../../../boost/test/cpp_main.hpp libs/test/doc/components/test_tools/index.html: *A* broken link: ../../tests/boost_check_equal_str.html libs/test/doc/components/test_tools/reference/BOOST_CHECK_CLOSE.html: *A* broken link: BOOST_CHECK_CLOSE_FRACTION.html libs/test/doc/components/test_tools/reference/BOOST_CHECK_MESSAGE.html: *A* broken link: 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1 0

[interprocess] patch for shared memory initialization exception
by Paul Poulin 14 Apr '07

14 Apr '07

Interprocess, shared memory, bug & patch. Bug: A race condition exists if a shared memory segment is being created/initialized for the first time. Another attempt to open the shared memory segment concurrently results in the second process waiting for the creator to complete the initialization. When the initialization is complete the second attempt will promptly throw an interprocess_exception (corrupted_error). Fix: The patch solution is to wait for the memory segment to not be in the InitializingSegment or UninitializedSegment states. At this point if the state is anything other than InitializedSegment then throw the interprocess_exception. A proposed patch is attached.

2 1

Re: [boost] boost::freetype - extension for boost::gil
by Phil Endecott 14 Apr '07

14 Apr '07

Tom Brinkman wrote: > I've written a few freetype wrappers over the years. I've since converted > it to use boost::gil and will be submiting it to GIL graphics library developers as an > extension. > The source code is now available for the asking. Yes please! One question: can it render text rotated by 90, 180, 270 degrees? Although the way the gil iterators work ought to make this possible, I'm not sure how you could interface between FreeType and that aspect of gil. > Yes, it supports "cleartype" and "kerning" so it will produce fonts are > equivalent to Microsoft's and > Apples. I've also added extras such as "word-wrapping" and "clipping". I hope that by "clipping" you mean that I can say "render this ten-thousand-pixel-high glypth at (0,-9900) so only the last hundred pixels are visible", and have it do so efficiently. If so, great! > Heres a complete working example of its usage. It looks rather low-level, presumably close to the native FreeType API. I'd prefer something a little more compact, e.g. image i; Font f("times",35); draw_text(i,0,0,f,"Hello World"); Unless I need to deal with the glyphs or kerning in some non-default way, I'd prefer to not see them. Presumably this sort of thing could be added on top of what you've described. > //Step 1. Initialize the freetype library > FT_Library library; > FT_Face face; > FT_Init_FreeType(&library); > FT_New_Face(library,"c:/fonts/mini/ARGOW___.TTF",0,&face); > FT_Set_Pixel_Sizes(face,0,12); Can you wrap all this up inside boost::freetype::library and boost::freetype::face classes? Regards, Phil.

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boost::freetype - extension for boost::gil
by Tom Brinkman 14 Apr '07

14 Apr '07

>> Is there a GIL-specific mailing list ? I imagine more people are using GIL >> now and are sharing info. http://opensource.adobe.com/gil/ >> Will the upcoming SOC project on Visualization of STL containers be able to >> use your wrapper to add labels to graphs ? >>http://code.google.com/soc/boost/about.html# As far as I understand it, thats an "svg" project, so "no". >> Will it be possible to disable Cleartype? I have an application where >> such a wrapper would be very useful, but Cleartype would give little >> or no benefit because of the application type. Its a build parameter of the freetype libraray. Disable it if you dont want it. If "cleartype" is disabled than "freetype" just renders the glyph as a normal anti-aliased glyph. >> Can it render text rotated by 90, 180, 270 degrees? I've also played around with this, but have never had a need for it. All you have to do is rotate the glyph image buffer that is returned by freetype. You can use the freetype api's to do this or calculate it yourself. boost::gil might even have a way to rotate the image buffer, but I've not run across it. >> I hope that by "clipping" you mean that I can say "render this >> ten-thousand-pixel-high glypth at (0,-9900) so only the last hundred >> pixels are visible", and have it do so efficiently. If so, great! Kind of. It just takes care of handeling strings that are longer than the available space and optionally adds "..." at the end; or, for numeric values, "######". >> It looks rather low-level, presumably close to the native FreeType >> API. I'd prefer something a little more compact, e.g. >> image i; >> Font f("times",35); >> draw_text(i,0,0,f,"Hello World"); Its been tried many times by many developers, and it never works. I've long since given up trying to write simple wrapper classes like these for "C" api's. The best we can do is make "freetype" more "stl/boost" friendly. I've done this by converting charactar string into to a freetype glyph vector. Once this is done, the vast array of stl algorithms and iterators are available to operate on it. Example: //Step 1: Create glyphs vector gil::rgba8_pixel_t black(0,0,0,255); std::string str = "abcdef"; std::vector<boost::freetype::glyph> glyphs; std::transform(str.begin(), str.end(), std::back_inserter(glyphs), boost::freetype::make_glyph<gil::rgba8_pixel_t>(face,black)); //Step 2: Create metrics vector std::vector<FT_Glyph_Metrics> metrics; std::transform(glyphs.begin(),glyphs.end(), std::back_inserter(metrics), boost::freetype::make_metric()); //Step 3: Create kerning vector std::vector<int> kerning; std::transform(glyphs.begin(),glyphs.end(), std::back_inserter(kerning), boost::freetype::make_kerning()); //Step 4: Find last fitted glyph std::vector<FT_Glyph_Metrics>::iterator it = std::find_if(metrics.begin(),metrics.end(),kerning.begin(), boost::freetype::find_last_fitted_glyph(view.width())); //Step 5: Get the Width, Height, and Glyph Height of the string int distance = (int)std::distance(it,metrics.end()); int width = std::for_each(metrics.begin(), metrics.end()-distance, kerning.begin(), boost::freetype::make_width()); int height = std::for_each(metrics.begin(), metrics.end()-distance, boost::freetype::make_height()); int gheight = std::for_each(metrics.begin(),metrics.end(), boost::freetype::make_glyph_height()); //Step 6: calculate the x and y position int x = 0; int y = -gheight; if (align & Middle) y = (view.height()-height-gheight)/2; else if (align & FMiddle) y = (view.height()-height)/2; else if (align & Bottom) y = view.height()-height; else if (align & FBottom) y = view.height()-height+gheight; //Step 7: draw the glyphs onto the boost::gil image std::for_each(glyphs.begin(), glyphs.end()-distance, kerning.begin(), boost::freetype::draw_glyphs<>(boost::gil::subimage_view(view,x,y, view.width(),height-gheight))); Of course, this example could be wrapped into a helper function such as: boost::freetype::draw_text("abcdefg", view, face, Left|Center);

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