svgcairo (empty) → 0.11.0
raw patch · 6 files changed
+1291/−0 lines, 6 filesdep +arraydep +basedep +cairobuild-type:Customsetup-changed
Dependencies added: array, base, cairo, containers, glib, gtk, haskell98, mtl, pango
Files
- COPYING +504/−0
- Graphics/Rendering/Cairo/SVG.chs +247/−0
- Gtk2HsSetup.hs +486/−0
- Setup.hs +7/−0
- svgcairo.cabal +44/−0
- svgcairo.h +3/−0
+ COPYING view
@@ -0,0 +1,504 @@+ GNU LESSER GENERAL PUBLIC LICENSE+ Version 2.1, February 1999++ Copyright (C) 1991, 1999 Free Software Foundation, Inc.+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA+ Everyone is permitted to copy and distribute verbatim copies+ of this license document, but changing it is not allowed.++[This is the first released version of the Lesser GPL. It also counts+ as the successor of the GNU Library Public License, version 2, hence+ the version number 2.1.]++ Preamble++ The licenses for most software are designed to take away your+freedom to share and change it. By contrast, the GNU General Public+Licenses are intended to guarantee your freedom to share and change+free software--to make sure the software is free for all its users.++ This license, the Lesser General Public License, applies to some+specially designated software packages--typically libraries--of the+Free Software Foundation and other authors who decide to use it. You+can use it too, but we suggest you first think carefully about whether+this license or the ordinary General Public License is the better+strategy to use in any particular case, based on the explanations below.++ When we speak of free software, we are referring to freedom of use,+not price. Our General Public Licenses are designed to make sure that+you have the freedom to distribute copies of free software (and charge+for this service if you wish); that you receive source code or can get+it if you want it; that you can change the software and use pieces of+it in new free programs; and that you are informed that you can do+these things.++ To protect your rights, we need to make restrictions that forbid+distributors to deny you these rights or to ask you to surrender these+rights. These restrictions translate to certain responsibilities for+you if you distribute copies of the library or if you modify it.++ For example, if you distribute copies of the library, whether gratis+or for a fee, you must give the recipients all the rights that we gave+you. You must make sure that they, too, receive or can get the source+code. If you link other code with the library, you must provide+complete object files to the recipients, so that they can relink them+with the library after making changes to the library and recompiling+it. And you must show them these terms so they know their rights.++ We protect your rights with a two-step method: (1) we copyright the+library, and (2) we offer you this license, which gives you legal+permission to copy, distribute and/or modify the library.++ To protect each distributor, we want to make it very clear that+there is no warranty for the free library. Also, if the library is+modified by someone else and passed on, the recipients should know+that what they have is not the original version, so that the original+author's reputation will not be affected by problems that might be+introduced by others.++ Finally, software patents pose a constant threat to the existence of+any free program. We wish to make sure that a company cannot+effectively restrict the users of a free program by obtaining a+restrictive license from a patent holder. Therefore, we insist that+any patent license obtained for a version of the library must be+consistent with the full freedom of use specified in this license.++ Most GNU software, including some libraries, is covered by the+ordinary GNU General Public License. This license, the GNU Lesser+General Public License, applies to certain designated libraries, and+is quite different from the ordinary General Public License. We use+this license for certain libraries in order to permit linking those+libraries into non-free programs.++ When a program is linked with a library, whether statically or using+a shared library, the combination of the two is legally speaking a+combined work, a derivative of the original library. The ordinary+General Public License therefore permits such linking only if the+entire combination fits its criteria of freedom. The Lesser General+Public License permits more lax criteria for linking other code with+the library.++ We call this license the "Lesser" General Public License because it+does Less to protect the user's freedom than the ordinary General+Public License. It also provides other free software developers Less+of an advantage over competing non-free programs. These disadvantages+are the reason we use the ordinary General Public License for many+libraries. However, the Lesser license provides advantages in certain+special circumstances.++ For example, on rare occasions, there may be a special need to+encourage the widest possible use of a certain library, so that it becomes+a de-facto standard. To achieve this, non-free programs must be+allowed to use the library. A more frequent case is that a free+library does the same job as widely used non-free libraries. In this+case, there is little to gain by limiting the free library to free+software only, so we use the Lesser General Public License.++ In other cases, permission to use a particular library in non-free+programs enables a greater number of people to use a large body of+free software. For example, permission to use the GNU C Library in+non-free programs enables many more people to use the whole GNU+operating system, as well as its variant, the GNU/Linux operating+system.++ Although the Lesser General Public License is Less protective of the+users' freedom, it does ensure that the user of a program that is+linked with the Library has the freedom and the wherewithal to run+that program using a modified version of the Library.++ The precise terms and conditions for copying, distribution and+modification follow. Pay close attention to the difference between a+"work based on the library" and a "work that uses the library". The+former contains code derived from the library, whereas the latter must+be combined with the library in order to run.++ GNU LESSER GENERAL PUBLIC LICENSE+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION++ 0. This License Agreement applies to any software library or other+program which contains a notice placed by the copyright holder or+other authorized party saying it may be distributed under the terms of+this Lesser General Public License (also called "this License").+Each licensee is addressed as "you".++ A "library" means a collection of software functions and/or data+prepared so as to be conveniently linked with application programs+(which use some of those functions and data) to form executables.++ The "Library", below, refers to any such software library or work+which has been distributed under these terms. A "work based on the+Library" means either the Library or any derivative work under+copyright law: that is to say, a work containing the Library or a+portion of it, either verbatim or with modifications and/or translated+straightforwardly into another language. (Hereinafter, translation is+included without limitation in the term "modification".)++ "Source code" for a work means the preferred form of the work for+making modifications to it. For a library, complete source code means+all the source code for all modules it contains, plus any associated+interface definition files, plus the scripts used to control compilation+and installation of the library.++ Activities other than copying, distribution and modification are not+covered by this License; they are outside its scope. The act of+running a program using the Library is not restricted, and output from+such a program is covered only if its contents constitute a work based+on the Library (independent of the use of the Library in a tool for+writing it). Whether that is true depends on what the Library does+and what the program that uses the Library does.+ + 1. You may copy and distribute verbatim copies of the Library's+complete source code as you receive it, in any medium, provided that+you conspicuously and appropriately publish on each copy an+appropriate copyright notice and disclaimer of warranty; keep intact+all the notices that refer to this License and to the absence of any+warranty; and distribute a copy of this License along with the+Library.++ You may charge a fee for the physical act of transferring a copy,+and you may at your option offer warranty protection in exchange for a+fee.++ 2. You may modify your copy or copies of the Library or any portion+of it, thus forming a work based on the Library, and copy and+distribute such modifications or work under the terms of Section 1+above, provided that you also meet all of these conditions:++ a) The modified work must itself be a software library.++ b) You must cause the files modified to carry prominent notices+ stating that you changed the files and the date of any change.++ c) You must cause the whole of the work to be licensed at no+ charge to all third parties under the terms of this License.++ d) If a facility in the modified Library refers to a function or a+ table of data to be supplied by an application program that uses+ the facility, other than as an argument passed when the facility+ is invoked, then you must make a good faith effort to ensure that,+ in the event an application does not supply such function or+ table, the facility still operates, and performs whatever part of+ its purpose remains meaningful.++ (For example, a function in a library to compute square roots has+ a purpose that is entirely well-defined independent of the+ application. Therefore, Subsection 2d requires that any+ application-supplied function or table used by this function must+ be optional: if the application does not supply it, the square+ root function must still compute square roots.)++These requirements apply to the modified work as a whole. If+identifiable sections of that work are not derived from the Library,+and can be reasonably considered independent and separate works in+themselves, then this License, and its terms, do not apply to those+sections when you distribute them as separate works. But when you+distribute the same sections as part of a whole which is a work based+on the Library, the distribution of the whole must be on the terms of+this License, whose permissions for other licensees extend to the+entire whole, and thus to each and every part regardless of who wrote+it.++Thus, it is not the intent of this section to claim rights or contest+your rights to work written entirely by you; rather, the intent is to+exercise the right to control the distribution of derivative or+collective works based on the Library.++In addition, mere aggregation of another work not based on the Library+with the Library (or with a work based on the Library) on a volume of+a storage or distribution medium does not bring the other work under+the scope of this License.++ 3. You may opt to apply the terms of the ordinary GNU General Public+License instead of this License to a given copy of the Library. To do+this, you must alter all the notices that refer to this License, so+that they refer to the ordinary GNU General Public License, version 2,+instead of to this License. (If a newer version than version 2 of the+ordinary GNU General Public License has appeared, then you can specify+that version instead if you wish.) Do not make any other change in+these notices.++ Once this change is made in a given copy, it is irreversible for+that copy, so the ordinary GNU General Public License applies to all+subsequent copies and derivative works made from that copy.++ This option is useful when you wish to copy part of the code of+the Library into a program that is not a library.++ 4. You may copy and distribute the Library (or a portion or+derivative of it, under Section 2) in object code or executable form+under the terms of Sections 1 and 2 above provided that you accompany+it with the complete corresponding machine-readable source code, which+must be distributed under the terms of Sections 1 and 2 above on a+medium customarily used for software interchange.++ If distribution of object code is made by offering access to copy+from a designated place, then offering equivalent access to copy the+source code from the same place satisfies the requirement to+distribute the source code, even though third parties are not+compelled to copy the source along with the object code.++ 5. A program that contains no derivative of any portion of the+Library, but is designed to work with the Library by being compiled or+linked with it, is called a "work that uses the Library". Such a+work, in isolation, is not a derivative work of the Library, and+therefore falls outside the scope of this License.++ However, linking a "work that uses the Library" with the Library+creates an executable that is a derivative of the Library (because it+contains portions of the Library), rather than a "work that uses the+library". The executable is therefore covered by this License.+Section 6 states terms for distribution of such executables.++ When a "work that uses the Library" uses material from a header file+that is part of the Library, the object code for the work may be a+derivative work of the Library even though the source code is not.+Whether this is true is especially significant if the work can be+linked without the Library, or if the work is itself a library. The+threshold for this to be true is not precisely defined by law.++ If such an object file uses only numerical parameters, data+structure layouts and accessors, and small macros and small inline+functions (ten lines or less in length), then the use of the object+file is unrestricted, regardless of whether it is legally a derivative+work. (Executables containing this object code plus portions of the+Library will still fall under Section 6.)++ Otherwise, if the work is a derivative of the Library, you may+distribute the object code for the work under the terms of Section 6.+Any executables containing that work also fall under Section 6,+whether or not they are linked directly with the Library itself.++ 6. As an exception to the Sections above, you may also combine or+link a "work that uses the Library" with the Library to produce a+work containing portions of the Library, and distribute that work+under terms of your choice, provided that the terms permit+modification of the work for the customer's own use and reverse+engineering for debugging such modifications.++ You must give prominent notice with each copy of the work that the+Library is used in it and that the Library and its use are covered by+this License. You must supply a copy of this License. If the work+during execution displays copyright notices, you must include the+copyright notice for the Library among them, as well as a reference+directing the user to the copy of this License. Also, you must do one+of these things:++ a) Accompany the work with the complete corresponding+ machine-readable source code for the Library including whatever+ changes were used in the work (which must be distributed under+ Sections 1 and 2 above); and, if the work is an executable linked+ with the Library, with the complete machine-readable "work that+ uses the Library", as object code and/or source code, so that the+ user can modify the Library and then relink to produce a modified+ executable containing the modified Library. (It is understood+ that the user who changes the contents of definitions files in the+ Library will not necessarily be able to recompile the application+ to use the modified definitions.)++ b) Use a suitable shared library mechanism for linking with the+ Library. A suitable mechanism is one that (1) uses at run time a+ copy of the library already present on the user's computer system,+ rather than copying library functions into the executable, and (2)+ will operate properly with a modified version of the library, if+ the user installs one, as long as the modified version is+ interface-compatible with the version that the work was made with.++ c) Accompany the work with a written offer, valid for at+ least three years, to give the same user the materials+ specified in Subsection 6a, above, for a charge no more+ than the cost of performing this distribution.++ d) If distribution of the work is made by offering access to copy+ from a designated place, offer equivalent access to copy the above+ specified materials from the same place.++ e) Verify that the user has already received a copy of these+ materials or that you have already sent this user a copy.++ For an executable, the required form of the "work that uses the+Library" must include any data and utility programs needed for+reproducing the executable from it. However, as a special exception,+the materials to be distributed need not include anything that is+normally distributed (in either source or binary form) with the major+components (compiler, kernel, and so on) of the operating system on+which the executable runs, unless that component itself accompanies+the executable.++ It may happen that this requirement contradicts the license+restrictions of other proprietary libraries that do not normally+accompany the operating system. Such a contradiction means you cannot+use both them and the Library together in an executable that you+distribute.++ 7. You may place library facilities that are a work based on the+Library side-by-side in a single library together with other library+facilities not covered by this License, and distribute such a combined+library, provided that the separate distribution of the work based on+the Library and of the other library facilities is otherwise+permitted, and provided that you do these two things:++ a) Accompany the combined library with a copy of the same work+ based on the Library, uncombined with any other library+ facilities. This must be distributed under the terms of the+ Sections above.++ b) Give prominent notice with the combined library of the fact+ that part of it is a work based on the Library, and explaining+ where to find the accompanying uncombined form of the same work.++ 8. You may not copy, modify, sublicense, link with, or distribute+the Library except as expressly provided under this License. Any+attempt otherwise to copy, modify, sublicense, link with, or+distribute the Library is void, and will automatically terminate your+rights under this License. However, parties who have received copies,+or rights, from you under this License will not have their licenses+terminated so long as such parties remain in full compliance.++ 9. You are not required to accept this License, since you have not+signed it. However, nothing else grants you permission to modify or+distribute the Library or its derivative works. These actions are+prohibited by law if you do not accept this License. Therefore, by+modifying or distributing the Library (or any work based on the+Library), you indicate your acceptance of this License to do so, and+all its terms and conditions for copying, distributing or modifying+the Library or works based on it.++ 10. Each time you redistribute the Library (or any work based on the+Library), the recipient automatically receives a license from the+original licensor to copy, distribute, link with or modify the Library+subject to these terms and conditions. You may not impose any further+restrictions on the recipients' exercise of the rights granted herein.+You are not responsible for enforcing compliance by third parties with+this License.++ 11. If, as a consequence of a court judgment or allegation of patent+infringement or for any other reason (not limited to patent issues),+conditions are imposed on you (whether by court order, agreement or+otherwise) that contradict the conditions of this License, they do not+excuse you from the conditions of this License. If you cannot+distribute so as to satisfy simultaneously your obligations under this+License and any other pertinent obligations, then as a consequence you+may not distribute the Library at all. For example, if a patent+license would not permit royalty-free redistribution of the Library by+all those who receive copies directly or indirectly through you, then+the only way you could satisfy both it and this License would be to+refrain entirely from distribution of the Library.++If any portion of this section is held invalid or unenforceable under any+particular circumstance, the balance of the section is intended to apply,+and the section as a whole is intended to apply in other circumstances.++It is not the purpose of this section to induce you to infringe any+patents or other property right claims or to contest validity of any+such claims; this section has the sole purpose of protecting the+integrity of the free software distribution system which is+implemented by public license practices. Many people have made+generous contributions to the wide range of software distributed+through that system in reliance on consistent application of that+system; it is up to the author/donor to decide if he or she is willing+to distribute software through any other system and a licensee cannot+impose that choice.++This section is intended to make thoroughly clear what is believed to+be a consequence of the rest of this License.++ 12. If the distribution and/or use of the Library is restricted in+certain countries either by patents or by copyrighted interfaces, the+original copyright holder who places the Library under this License may add+an explicit geographical distribution limitation excluding those countries,+so that distribution is permitted only in or among countries not thus+excluded. In such case, this License incorporates the limitation as if+written in the body of this License.++ 13. The Free Software Foundation may publish revised and/or new+versions of the Lesser General Public License from time to time.+Such new versions will be similar in spirit to the present version,+but may differ in detail to address new problems or concerns.++Each version is given a distinguishing version number. If the Library+specifies a version number of this License which applies to it and+"any later version", you have the option of following the terms and+conditions either of that version or of any later version published by+the Free Software Foundation. If the Library does not specify a+license version number, you may choose any version ever published by+the Free Software Foundation.++ 14. If you wish to incorporate parts of the Library into other free+programs whose distribution conditions are incompatible with these,+write to the author to ask for permission. For software which is+copyrighted by the Free Software Foundation, write to the Free+Software Foundation; we sometimes make exceptions for this. Our+decision will be guided by the two goals of preserving the free status+of all derivatives of our free software and of promoting the sharing+and reuse of software generally.++ NO WARRANTY++ 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO+WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.+EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR+OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY+KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR+PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE+LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME+THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.++ 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN+WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY+AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU+FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR+CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE+LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING+RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A+FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF+SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH+DAMAGES.++ END OF TERMS AND CONDITIONS++ How to Apply These Terms to Your New Libraries++ If you develop a new library, and you want it to be of the greatest+possible use to the public, we recommend making it free software that+everyone can redistribute and change. You can do so by permitting+redistribution under these terms (or, alternatively, under the terms of the+ordinary General Public License).++ To apply these terms, attach the following notices to the library. It is+safest to attach them to the start of each source file to most effectively+convey the exclusion of warranty; and each file should have at least the+"copyright" line and a pointer to where the full notice is found.++ <one line to give the library's name and a brief idea of what it does.>+ Copyright (C) <year> <name of author>++ This library is free software; you can redistribute it and/or+ modify it under the terms of the GNU Lesser General Public+ License as published by the Free Software Foundation; either+ version 2.1 of the License, or (at your option) any later version.++ This library is distributed in the hope that it will be useful,+ but WITHOUT ANY WARRANTY; without even the implied warranty of+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU+ Lesser General Public License for more details.++ You should have received a copy of the GNU Lesser General Public+ License along with this library; if not, write to the Free Software+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA++Also add information on how to contact you by electronic and paper mail.++You should also get your employer (if you work as a programmer) or your+school, if any, to sign a "copyright disclaimer" for the library, if+necessary. Here is a sample; alter the names:++ Yoyodyne, Inc., hereby disclaims all copyright interest in the+ library `Frob' (a library for tweaking knobs) written by James Random Hacker.++ <signature of Ty Coon>, 1 April 1990+ Ty Coon, President of Vice++That's all there is to it!++
+ Graphics/Rendering/Cairo/SVG.chs view
@@ -0,0 +1,247 @@+{-# LANGUAGE CPP #-}+-----------------------------------------------------------------------------+-- |+-- Module : Graphics.Rendering.Cairo.SVG+-- Copyright : (c) 2005 Duncan Coutts, Paolo Martini +-- License : BSD-style (see cairo/COPYRIGHT)+--+-- Maintainer : gtk2hs-devel@lists.sourceforge.net+-- Stability : experimental+-- Portability : portable+--+-- The SVG extension to the Cairo 2D graphics library.+--+-----------------------------------------------------------------------------++module Graphics.Rendering.Cairo.SVG (+ -- * Convenience API++ -- | These operations render an SVG image directly in the current 'Render'+ -- contect. Because they operate in the cairo 'Render' monad they are+ -- affected by the current transformation matrix. So it is possible, for+ -- example, to scale or rotate an SVG image.+ --+ -- In the following example we scale an SVG image to a unit square:+ --+ -- > let (width, height) = svgGetSize in+ -- > do scale (1/width) (1/height)+ -- > svgRender svg++ svgRenderFromFile,+ svgRenderFromHandle,+ svgRenderFromString,++ -- * Standard API++ -- | With this API there are seperate functions for loading the SVG and+ -- rendering it. This allows us to be more effecient in the case that an SVG+ -- image is used many times - since it can be loaded just once and rendered+ -- many times. With the convenience API above the SVG would be parsed and+ -- processed each time it is drawn.++ SVG,+ svgRender,+ svgGetSize,++ -- ** Block scoped versions++ -- | These versions of the SVG loading operations give temporary access+ -- to the 'SVG' object within the scope of the handler function. These+ -- operations guarantee that the resources for the SVG object are deallocated+ -- at the end of the handler block. If this form of resource allocation is+ -- too restrictive you can use the GC-managed versions below.+ --+ -- These versions are ofen used in the following style:+ --+ -- > withSvgFromFile "foo.svg" $ \svg -> do+ -- > ...+ -- > svgRender svg+ -- > ...++ withSvgFromFile,+ withSvgFromHandle,+ withSvgFromString,++ -- ** GC-managed versions++ -- | These versions of the SVG loading operations use the standard Haskell+ -- garbage collector to manage the resources associated with the 'SVG' object.+ -- As such they are more convenient to use but the GC cannot give+ -- strong guarantees about when the resources associated with the 'SVG' object+ -- will be released. In most circumstances this is not a problem, especially+ -- if the SVG files being used are not very big.++ svgNewFromFile,+ svgNewFromHandle,+ svgNewFromString,+ ) where++import Control.Monad (when)+import Foreign+import Foreign.C+import Control.Monad.Reader (ask, liftIO)+import System.IO (Handle, openFile, IOMode(ReadMode), hGetBuf)++import System.Glib.GError (GError(GError), checkGError)+import System.Glib.GObject (GObject(..), GObjectClass(..), constructNewGObject,+ unGObject, objectUnref)++import Graphics.Rendering.Cairo.Internal (Render, bracketR)+{# import Graphics.Rendering.Cairo.Types #} (Cairo(Cairo))++{# context lib="librsvg" prefix="rsvg_handle" #}++---------------------+-- Types+-- ++{# pointer *RsvgHandle as SVG foreign newtype #}++mkSVG = (SVG, objectUnref)+unSVG (SVG obj) = obj++instance GObjectClass SVG where+ toGObject = GObject . castForeignPtr . unSVG+ unsafeCastGObject = SVG . castForeignPtr . unGObject++---------------------+-- Basic API+-- ++-- block scoped versions++withSvgFromFile :: FilePath -> (SVG -> Render a) -> Render a+withSvgFromFile file action =+ withSVG $ \svg -> do + liftIO $ svgParseFromFile file svg+ action svg++withSvgFromHandle :: Handle -> (SVG -> Render a) -> Render a+withSvgFromHandle hnd action =+ withSVG $ \svg -> do + liftIO $ svgParseFromHandle hnd svg+ action svg++withSvgFromString :: String -> (SVG -> Render a) -> Render a+withSvgFromString str action =+ withSVG $ \svg -> do+ liftIO $ svgParseFromString str svg+ action svg++withSVG :: (SVG -> Render a) -> Render a+withSVG =+ bracketR (do+ {# call g_type_init #}+ svgPtr <- {# call unsafe new #}+ svgPtr' <- newForeignPtr_ svgPtr+ return (SVG svgPtr')) + (\(SVG fptr) -> withForeignPtr fptr $ \ptr ->+ {# call unsafe g_object_unref #} (castPtr ptr))++-- GC managed versions++svgNewFromFile :: FilePath -> IO SVG+svgNewFromFile file = do+ svg <- svgNew+ svgParseFromFile file svg+ return svg++svgNewFromHandle :: Handle -> IO SVG+svgNewFromHandle hnd = do+ svg <- svgNew+ svgParseFromHandle hnd svg+ return svg++svgNewFromString :: String -> IO SVG+svgNewFromString str = do+ svg <- svgNew+ svgParseFromString str svg+ return svg++svgNew :: IO SVG+svgNew = do+ {# call g_type_init #}+ constructNewGObject mkSVG {# call unsafe new #}+++-- internal implementation++svgParseFromFile :: FilePath -> SVG -> IO ()+svgParseFromFile file svg = do+ hnd <- openFile file ReadMode+ svgParseFromHandle hnd svg++svgParseFromHandle :: Handle -> SVG -> IO ()+svgParseFromHandle hnd svg =+ allocaBytes 4096 $ \bufferPtr -> do+ let loop = do+ count <- hGetBuf hnd bufferPtr 4096+ when (count > 0)+ (checkStatus $ {# call unsafe rsvg_handle_write #}+ svg (castPtr bufferPtr) (fromIntegral count))+ when (count == 4096) loop+ loop+ checkStatus $ {# call unsafe rsvg_handle_close #} svg++svgParseFromString :: String -> SVG -> IO ()+svgParseFromString str svg = do+ let loop "" = return ()+ loop str =+ case splitAt 4096 str of+ (chunk, str') -> do+ withCStringLen chunk $ \(chunkPtr, len) ->+ checkStatus $ {# call unsafe rsvg_handle_write #}+ svg (castPtr chunkPtr) (fromIntegral len)+ loop str'+ loop str+ checkStatus $ {# call unsafe rsvg_handle_close #} svg++-- actually render it++-- | render an SVG file+--+-- Returns @False@ if an error was detected.+-- On librsvg before 2.22.3, @svgRender@ always returns @True@.+svgRender :: SVG -> Render Bool+svgRender svg = do+ cr <- ask+ ret <- liftIO $ {# call unsafe render_cairo #} svg cr+#if ! LIBRSVG_CHECK_VERSION(2,22,3)+ return True+#else+ return (ret /= 0)+#endif++-- | Get the width and height of the SVG image.+--+svgGetSize :: + SVG+ -> (Int, Int) -- ^ @(width, height)@+svgGetSize svg = unsafePerformIO $+ allocaBytes {# sizeof RsvgDimensionData #} $ \dimentionsPtr -> do+ {# call unsafe get_dimensions #} svg dimentionsPtr+ width <- {# get RsvgDimensionData->width #} dimentionsPtr+ height <- {# get RsvgDimensionData->height #} dimentionsPtr+ return (fromIntegral width, fromIntegral height)++---------------------+-- Convenience API+-- ++svgRenderFromFile :: FilePath -> Render Bool+svgRenderFromFile file = withSvgFromFile file svgRender++svgRenderFromHandle :: Handle -> Render Bool+svgRenderFromHandle hnd = withSvgFromHandle hnd svgRender++svgRenderFromString :: String -> Render Bool+svgRenderFromString str = withSvgFromString str svgRender++---------------------+-- Utils+-- ++checkStatus :: (Ptr (Ptr ()) -> IO CInt) -> IO ()+checkStatus action =+ checkGError (\ptr -> action ptr >> return ())+ (\(GError domain code msg) -> fail ("svg cairo error: " ++ msg))
+ Gtk2HsSetup.hs view
@@ -0,0 +1,486 @@+{-# LANGUAGE CPP #-}++#define CABAL_VERSION_ENCODE(major, minor, micro) ( \+ ((major) * 10000) \+ + ((minor) * 100) \+ + ((micro) * 1))++#define CABAL_VERSION_CHECK(major,minor,micro) \+ (CABAL_VERSION >= CABAL_VERSION_ENCODE(major,minor,micro))++-- now, this is bad, but Cabal doesn't seem to actually pass any information about+-- its version to CPP, so guess the version depending on the version of GHC+#ifdef CABAL_VERSION_MINOR+#ifndef CABAL_VERSION_MAJOR+#define CABAL_VERSION_MAJOR 1+#endif+#ifndef CABAL_VERSION_MICRO+#define CABAL_VERSION_MICRO 0+#endif+#define CABAL_VERSION CABAL_VERSION_ENCODE( \+ CABAL_VERSION_MAJOR, \+ CABAL_VERSION_MINOR, \+ CABAL_VERSION_MICRO)+#else+#warning Setup.hs is guessing the version of Cabal. If compilation of Setup.hs fails use -DCABAL_VERSION_MINOR=x for Cabal version 1.x.0 when building (prefixed by --ghc-option= when using the 'cabal' command)+#if (__GLASGOW_HASKELL__ >= 612)+#define CABAL_VERSION CABAL_VERSION_ENCODE(1,8,0)+#else+#define CABAL_VERSION CABAL_VERSION_ENCODE(1,6,0)+#endif+#endif++-- | Build a Gtk2hs package.+--+module Gtk2HsSetup ( gtk2hsUserHooks, getPkgConfigPackages ) where++import Distribution.Simple+import Distribution.Simple.PreProcess+import Distribution.InstalledPackageInfo ( importDirs,+ showInstalledPackageInfo,+ libraryDirs,+ extraLibraries,+ extraGHCiLibraries )+import Distribution.Simple.PackageIndex (+#if CABAL_VERSION_CHECK(1,8,0)+ lookupInstalledPackageId+#else+ lookupPackageId+#endif+ )+import Distribution.PackageDescription as PD ( PackageDescription(..),+ updatePackageDescription,+ BuildInfo(..),+ emptyBuildInfo, allBuildInfo,+ Library(..),+ libModules, hasLibs)+import Distribution.Simple.LocalBuildInfo (LocalBuildInfo(..),+ InstallDirs(..),+#if CABAL_VERSION_CHECK(1,8,0)+ componentPackageDeps,+#else+ packageDeps,+#endif+ absoluteInstallDirs)+import Distribution.Simple.Compiler ( Compiler(..) )+import Distribution.Simple.Program (+ Program(..), ConfiguredProgram(..),+ rawSystemProgramConf, rawSystemProgramStdoutConf,+ c2hsProgram, pkgConfigProgram, requireProgram, ghcPkgProgram,+ simpleProgram, lookupProgram, rawSystemProgramStdout, ProgArg)+import Distribution.ModuleName ( ModuleName, components, toFilePath )+import Distribution.Simple.Utils+import Distribution.Simple.Setup (CopyFlags(..), InstallFlags(..), CopyDest(..),+ defaultCopyFlags, ConfigFlags(configVerbosity),+ fromFlag, toFlag, RegisterFlags(..), flagToMaybe,+ fromFlagOrDefault, defaultRegisterFlags)+import Distribution.Simple.BuildPaths ( autogenModulesDir )+import Distribution.Simple.Install ( install )+#if CABAL_VERSION_CHECK(1,8,0)+import Distribution.Simple.Register ( generateRegistrationInfo, registerPackage )+#else+import qualified Distribution.Simple.Register as Register ( register )+#endif+import Distribution.Text ( simpleParse, display )+import System.FilePath+import System.Directory ( doesFileExist )+import Distribution.Version (Version(..))+import Distribution.Verbosity+import Control.Monad (when, unless, filterM)+import Data.Maybe ( isJust, isNothing, fromMaybe, maybeToList )+import Data.List (isPrefixOf, isSuffixOf, nub)+import Data.Char (isAlpha)+import qualified Data.Map as M+import qualified Data.Set as S++import Control.Applicative ((<$>))+import System.Directory (getDirectoryContents, doesDirectoryExist)++-- the name of the c2hs pre-compiled header file+precompFile = "precompchs.bin"++gtk2hsUserHooks = simpleUserHooks {+ hookedPrograms = [typeGenProgram, signalGenProgram, c2hsLocal],+ hookedPreProcessors = [("chs", ourC2hs)],+ confHook = \pd cf ->+ confHook simpleUserHooks pd cf >>= return . adjustLocalBuildInfo,+ postConf = \args cf pd lbi -> do+ genSynthezisedFiles (fromFlag (configVerbosity cf)) pd lbi+ postConf simpleUserHooks args cf pd lbi,+ buildHook = \pd lbi uh bf -> fixDeps pd >>= \pd ->+ (buildHook simpleUserHooks) pd lbi uh bf,+ copyHook = \pd lbi uh flags -> (copyHook simpleUserHooks) pd lbi uh flags >>+ installCHI pd lbi (fromFlag (copyVerbosity flags)) (fromFlag (copyDest flags)),+ instHook = \pd lbi uh flags ->+#if defined(mingw32_HOST_OS) || defined(__MINGW32__)+ installHook pd lbi uh flags >>+ installCHI pd lbi (fromFlag (installVerbosity flags)) NoCopyDest,+ regHook = registerHook+#else+ instHook simpleUserHooks pd lbi uh flags >>+ installCHI pd lbi (fromFlag (installVerbosity flags)) NoCopyDest+#endif+ }++------------------------------------------------------------------------------+-- Lots of stuff for windows ghci support+------------------------------------------------------------------------------++getDlls :: [FilePath] -> IO [FilePath]+getDlls dirs = filter ((== ".dll") . takeExtension) . concat <$>+ mapM getDirectoryContents dirs++fixLibs :: [FilePath] -> [String] -> [String]+fixLibs dlls = concatMap $ \ lib ->+ case filter (("lib" ++ lib) `isPrefixOf`) dlls of+ dll:_ -> [dropExtension dll]+ _ -> if lib == "z" then [] else [lib]++-- The following code is a big copy-and-paste job from the sources of+-- Cabal 1.8 just to be able to fix a field in the package file. Yuck.++#if CABAL_VERSION_CHECK(1,8,0)+ +installHook :: PackageDescription -> LocalBuildInfo+ -> UserHooks -> InstallFlags -> IO ()+installHook pkg_descr localbuildinfo _ flags = do+ let copyFlags = defaultCopyFlags {+ copyDistPref = installDistPref flags,+ copyDest = toFlag NoCopyDest,+ copyVerbosity = installVerbosity flags+ }+ install pkg_descr localbuildinfo copyFlags+ let registerFlags = defaultRegisterFlags {+ regDistPref = installDistPref flags,+ regInPlace = installInPlace flags,+ regPackageDB = installPackageDB flags,+ regVerbosity = installVerbosity flags+ }+ when (hasLibs pkg_descr) $ register pkg_descr localbuildinfo registerFlags++registerHook :: PackageDescription -> LocalBuildInfo+ -> UserHooks -> RegisterFlags -> IO ()+registerHook pkg_descr localbuildinfo _ flags =+ if hasLibs pkg_descr+ then register pkg_descr localbuildinfo flags+ else setupMessage verbosity+ "Package contains no library to register:" (packageId pkg_descr)+ where verbosity = fromFlag (regVerbosity flags)++register :: PackageDescription -> LocalBuildInfo+ -> RegisterFlags -- ^Install in the user's database?; verbose+ -> IO ()+register pkg@PackageDescription { library = Just lib }+ lbi@LocalBuildInfo { libraryConfig = Just clbi } regFlags+ = do++ installedPkgInfoRaw <- generateRegistrationInfo+ verbosity pkg lib lbi clbi inplace distPref++ dllsInScope <- getSearchPath >>= (filterM doesDirectoryExist) >>= getDlls+ let libs = fixLibs dllsInScope (extraLibraries installedPkgInfoRaw)+ installedPkgInfo = installedPkgInfoRaw {+ extraGHCiLibraries = libs }++ -- Three different modes:+ case () of+ _ | modeGenerateRegFile -> die "Generate Reg File not supported"+ | modeGenerateRegScript -> die "Generate Reg Script not supported"+ | otherwise -> registerPackage verbosity+ installedPkgInfo pkg lbi inplace packageDb++ where+ modeGenerateRegFile = isJust (flagToMaybe (regGenPkgConf regFlags))+ modeGenerateRegScript = fromFlag (regGenScript regFlags)+ inplace = fromFlag (regInPlace regFlags)+ packageDb = case flagToMaybe (regPackageDB regFlags) of+ Just db -> db+ Nothing -> registrationPackageDB (withPackageDB lbi)+ distPref = fromFlag (regDistPref regFlags)+ verbosity = fromFlag (regVerbosity regFlags)++register _ _ regFlags = notice verbosity "No package to register"+ where+ verbosity = fromFlag (regVerbosity regFlags)++#else+installHook :: PackageDescription -> LocalBuildInfo+ -> UserHooks -> InstallFlags -> IO ()+installHook pkg_descr localbuildinfo _ flags = do+ let copyFlags = defaultCopyFlags {+ copyDistPref = installDistPref flags,+ copyInPlace = installInPlace flags,+ copyUseWrapper = installUseWrapper flags,+ copyDest = toFlag NoCopyDest,+ copyVerbosity = installVerbosity flags+ }+ install pkg_descr localbuildinfo copyFlags+ let registerFlags = defaultRegisterFlags {+ regDistPref = installDistPref flags,+ regInPlace = installInPlace flags,+ regPackageDB = installPackageDB flags,+ regVerbosity = installVerbosity flags+ }+ when (hasLibs pkg_descr) $ register pkg_descr localbuildinfo registerFlags++registerHook :: PackageDescription -> LocalBuildInfo+ -> UserHooks -> RegisterFlags -> IO ()+registerHook pkg_descr localbuildinfo _ flags =+ if hasLibs pkg_descr+ then register pkg_descr localbuildinfo flags+ else setupMessage verbosity+ "Package contains no library to register:" (packageId pkg_descr)+ where verbosity = fromFlag (regVerbosity flags)++register :: PackageDescription -> LocalBuildInfo+ -> RegisterFlags -- ^Install in the user's database?; verbose+ -> IO ()+register pkg_descr lbi regFlags = do+ let verbosity = fromFlag (regVerbosity regFlags)+ warn verbosity "Cannot register ghci libraries with Cabal 1.6 (need 1.8)."+ Register.register pkg_descr lbi regFlags+ +#endif++------------------------------------------------------------------------------+-- This is a hack for Cabal-1.8, It is not needed in Cabal-1.9.1 or later+------------------------------------------------------------------------------++adjustLocalBuildInfo :: LocalBuildInfo -> LocalBuildInfo+adjustLocalBuildInfo lbi =+ let extra = (Just libBi, [])+ libBi = emptyBuildInfo { includeDirs = [ autogenModulesDir lbi+ , buildDir lbi ] }+ in lbi { localPkgDescr = updatePackageDescription extra (localPkgDescr lbi) }++------------------------------------------------------------------------------+-- Processing .chs files with our local c2hs.+------------------------------------------------------------------------------++ourC2hs :: BuildInfo -> LocalBuildInfo -> PreProcessor+ourC2hs bi lbi = PreProcessor {+ platformIndependent = False,+ runPreProcessor = runC2HS bi lbi+}++runC2HS :: BuildInfo -> LocalBuildInfo ->+ (FilePath, FilePath) -> (FilePath, FilePath) -> Verbosity -> IO ()+runC2HS bi lbi (inDir, inFile) (outDir, outFile) verbosity = do+ -- have the header file name if we don't have the precompiled header yet+ header <- case lookup "x-c2hs-header" (customFieldsBI bi) of+ Just h -> return h+ Nothing -> die ("Need x-c2hs-Header definition in the .cabal Library section "+++ "that sets the C header file to process .chs.pp files.")++ -- c2hs will output files in out dir, removing any leading path of the input file.+ -- Thus, append the dir of the input file to the output dir.+ let (outFileDir, newOutFile) = splitFileName outFile+ let newOutDir = outDir </> outFileDir+ -- additional .chi files might be needed that other packages have installed;+ -- we assume that these are installed in the same place as .hi files+ let chiDirs = [ dir |+#if CABAL_VERSION_CHECK(1,8,0)+ ipi <- maybe [] (map fst . componentPackageDeps) (libraryConfig lbi),+ dir <- maybe [] importDirs (lookupInstalledPackageId (installedPkgs lbi) ipi) ]+#else+ ipi <- packageDeps lbi,+ dir <- maybe [] importDirs (lookupPackageId (installedPkgs lbi) ipi) ]+#endif+ rawSystemProgramConf verbosity c2hsLocal (withPrograms lbi) $+ map ("--include=" ++) (outDir:chiDirs)+ ++ ["--cppopts=" ++ opt | opt <- getCppOptions bi lbi]+ ++ ["--output-dir=" ++ newOutDir,+ "--output=" ++ newOutFile,+ "--precomp=" ++ buildDir lbi </> precompFile,+ header, inDir </> inFile]++getCppOptions :: BuildInfo -> LocalBuildInfo -> [String]+getCppOptions bi lbi+ = nub $+ ["-I" ++ dir | dir <- PD.includeDirs bi]+ ++ [opt | opt@('-':c:_) <- (PD.cppOptions bi ++ PD.ccOptions bi), c `elem` "DIU"]++installCHI :: PackageDescription -- ^information from the .cabal file+ -> LocalBuildInfo -- ^information from the configure step+ -> Verbosity -> CopyDest -- ^flags sent to copy or install+ -> IO ()+installCHI pkg@PD.PackageDescription { library = Just lib } lbi verbosity copydest = do+ let InstallDirs { libdir = libPref } = absoluteInstallDirs pkg lbi copydest+ -- cannot use the recommended 'findModuleFiles' since it fails if there exists+ -- a modules that does not have a .chi file+ mFiles <- mapM (findFileWithExtension' ["chi"] [buildDir lbi])+ (map toFilePath+#if CABAL_VERSION_CHECK(1,8,0)+ (PD.libModules lib)+#else+ (PD.libModules pkg)+#endif+ )+ let files = [ f | Just f <- mFiles ]+#if CABAL_VERSION_CHECK(1,8,0)+ installOrdinaryFiles verbosity libPref files+#else+ copyFiles verbosity libPref files+#endif++ +installCHI _ _ _ _ = return ()++------------------------------------------------------------------------------+-- Generating the type hierarchy and signal callback .hs files.+------------------------------------------------------------------------------++typeGenProgram :: Program+typeGenProgram = (simpleProgram "gtk2hsTypeGen")++signalGenProgram :: Program+signalGenProgram = (simpleProgram "gtk2hsHookGenerator")++c2hsLocal :: Program+c2hsLocal = (simpleProgram "gtk2hsC2hs")++genSynthezisedFiles :: Verbosity -> PackageDescription -> LocalBuildInfo -> IO ()+genSynthezisedFiles verb pd lbi = do++ cPkgs <- getPkgConfigPackages verb lbi pd++ let xList = maybe [] (customFieldsBI . libBuildInfo) (library pd)+ ++customFieldsPD pd+ typeOpts :: String -> [ProgArg]+ typeOpts tag = concat [ map (\val -> '-':'-':drop (length tag) field++'=':val) (words content)+ | (field,content) <- xList,+ tag `isPrefixOf` field,+ field /= (tag++"file")]+ ++ [ "--tag=" ++ tag+ | PackageIdentifier name (Version (major:minor:_) _) <- cPkgs+ , let name' = filter isAlpha (display name)+ , tag <- name'+ : [ name' ++ "-" ++ show major ++ "." ++ show digit+ | digit <- [0,2..minor] ]+ ]++ signalsOpts :: [ProgArg]+ signalsOpts = concat [ map (\val -> '-':'-':drop 10 field++'=':val) (words content)+ | (field,content) <- xList,+ "x-signals-" `isPrefixOf` field,+ field /= "x-signals-file"]++ genFile :: Program -> [ProgArg] -> FilePath -> IO ()+ genFile prog args outFile = do+ res <- rawSystemProgramStdoutConf verb prog (withPrograms lbi) args+ rewriteFile outFile res++ (flip mapM_) (filter (\(tag,_) -> "x-types-" `isPrefixOf` tag && "file" `isSuffixOf` tag) xList) $+ \(fileTag, f) -> do+ let tag = reverse (drop 4 (reverse fileTag))+ info verb ("Ensuring that class hierarchy in "++f++" is up-to-date.")+ genFile typeGenProgram (typeOpts tag) f++ case lookup "x-signals-file" xList of+ Nothing -> return ()+ Just f -> do+ info verb ("Ensuring that callback hooks in "++f++" are up-to-date.")+ genFile signalGenProgram signalsOpts f++--FIXME: Cabal should tell us the selected pkg-config package versions in the+-- LocalBuildInfo or equivalent.+-- In the mean time, ask pkg-config again.++getPkgConfigPackages :: Verbosity -> LocalBuildInfo -> PackageDescription -> IO [PackageId]+getPkgConfigPackages verbosity lbi pkg =+ sequence+ [ do version <- pkgconfig ["--modversion", display pkgname]+ case simpleParse version of+ Nothing -> die $ "parsing output of pkg-config --modversion failed"+ Just v -> return (PackageIdentifier pkgname v)+ | Dependency pkgname _ <- concatMap pkgconfigDepends (allBuildInfo pkg) ]+ where+ pkgconfig = rawSystemProgramStdoutConf verbosity+ pkgConfigProgram (withPrograms lbi)++------------------------------------------------------------------------------+-- Dependency calculation amongst .chs files.+------------------------------------------------------------------------------++-- Given all files of the package, find those that end in .chs and extract the+-- .chs files they depend upon. Then return the PackageDescription with these+-- files rearranged so that they are built in a sequence that files that are+-- needed by other files are built first.+fixDeps :: PackageDescription -> IO PackageDescription+fixDeps pd@PD.PackageDescription {+ PD.library = Just lib@PD.Library {+ PD.exposedModules = expMods,+ PD.libBuildInfo = bi@PD.BuildInfo {+ PD.hsSourceDirs = srcDirs,+ PD.otherModules = othMods+ }}} = do+ let findModule m = findFileWithExtension [".chs.pp",".chs"] srcDirs+ (joinPath (components m))+ mExpFiles <- mapM findModule expMods+ mOthFiles <- mapM findModule othMods++ -- tag all exposed files with True so we throw an error if we need to build+ -- an exposed module before an internal modules (we cannot express this)+ let modDeps = zipWith (ModDep True []) expMods mExpFiles+++ zipWith (ModDep False []) othMods mOthFiles+ modDeps <- mapM extractDeps modDeps+ let (expMods, othMods) = span mdExposed $ sortTopological modDeps+ badOther = map (fromMaybe "<no file>" . mdLocation) $+ filter (not . mdExposed) expMods+ unless (null badOther) $+ die ("internal chs modules "++intercalate "," badOther+++ " depend on exposed chs modules; cabal needs to build internal modules first")+ return pd { PD.library = Just lib {+ PD.exposedModules = map mdOriginal expMods,+ PD.libBuildInfo = bi { PD.otherModules = map mdOriginal othMods }+ }}++data ModDep = ModDep {+ mdExposed :: Bool,+ mdRequires :: [ModuleName],+ mdOriginal :: ModuleName,+ mdLocation :: Maybe FilePath+}++instance Show ModDep where+ show x = show (mdLocation x)++instance Eq ModDep where+ ModDep { mdOriginal = m1 } == ModDep { mdOriginal = m2 } = m1==m2+instance Ord ModDep where+ compare ModDep { mdOriginal = m1 } ModDep { mdOriginal = m2 } = compare m1 m2++-- Extract the dependencies of this file. This is intentionally rather naive as it+-- ignores CPP conditionals. We just require everything which means that the+-- existance of a .chs module may not depend on some CPP condition. +extractDeps :: ModDep -> IO ModDep+extractDeps md@ModDep { mdLocation = Nothing } = return md+extractDeps md@ModDep { mdLocation = Just f } = withFileContents f $ \con -> do+ let findImports acc (('{':'#':xs):xxs) = case (dropWhile ((==) ' ') xs) of+ ('i':'m':'p':'o':'r':'t':' ':ys) ->+ case simpleParse (takeWhile ((/=) '#') ys) of+ Just m -> findImports (m:acc) xxs + Nothing -> die ("cannot parse chs import in "++f++":\n"+++ "offending line is {#"++xs)+ -- no more imports after the first non-import hook+ _ -> return acc+ findImports acc (_:xxs) = findImports acc xxs+ findImports acc [] = return acc+ mods <- findImports [] (lines con)+ return md { mdRequires = mods }++-- Find a total order of the set of modules that are partially sorted by their+-- dependencies on each other. The function returns the sorted list of modules+-- together with a list of modules that are required but not supplied by this+-- in the input set of modules.+sortTopological :: [ModDep] -> [ModDep]+sortTopological ms = reverse $ fst $ foldl visit ([], S.empty) (map mdOriginal ms)+ where+ set = M.fromList (map (\m -> (mdOriginal m, m)) ms)+ visit (out,visited) m+ | m `S.member` visited = (out,visited)+ | otherwise = case m `M.lookup` set of+ Nothing -> (out, m `S.insert` visited)+ Just md -> (md:out', visited')+ where+ (out',visited') = foldl visit (out, m `S.insert` visited) (mdRequires md)
+ Setup.hs view
@@ -0,0 +1,7 @@+-- Setup file for a Gtk2Hs module. Contains only adjustments specific to this module,+-- all Gtk2Hs-specific boilerplate is stored in Gtk2HsSetup.hs which should be kept+-- identical across all modules.+import Gtk2HsSetup ( gtk2hsUserHooks )+import Distribution.Simple ( defaultMainWithHooks )++main = defaultMainWithHooks gtk2hsUserHooks
+ svgcairo.cabal view
@@ -0,0 +1,44 @@+Name: svgcairo+Version: 0.11.0+License: GPL+License-file: COPYING+Copyright: (c) 2001-2010 The Gtk2Hs Team+Author: Duncan Coutts+Maintainer: gtk2hs-users@sourceforge.net+Build-Type: Custom+Cabal-Version: >= 1.6.0+Stability: provisional+homepage: http://www.haskell.org/gtk2hs/+bug-reports: http://hackage.haskell.org/trac/gtk2hs/+Synopsis: Binding to the GTK+ OpenGL Extension+Description: Svgcairo provides the GDK objects to support OpenGL rendering in GTK+,+ and GtkWidget API add-ons to make GTK+ widgets OpenGL-capable.++Category: Graphics+Tested-With: GHC == 6.12.1+x-Types-Forward: *Graphics.UI.GtkInternals+x-Types-Destructor: objectUnrefFromMainloop+Extra-Source-Files: svgcairo.h+ Gtk2HsSetup.hs++Source-Repository head+ type: darcs+ location: http://code.haskell.org/gtk2hs/+ subdir: svgcairo++Library+ build-depends: base >= 4 && < 5, array, containers, haskell98, mtl,+ glib >= 0.11 && < 0.12, + pango >= 0.11 && < 0.12, + cairo >= 0.11 && < 0.12,+ gtk >= 0.11 && < 0.12+ + build-tools: gtk2hsC2hs, gtk2hsHookGenerator, gtk2hsTypeGen+ + exposed-modules:+ Graphics.Rendering.Cairo.SVG+ + extensions: ForeignFunctionInterface+ + x-c2hs-Header: svgcairo.h+ pkgconfig-depends: librsvg-2.0 >= 2.16.0, cairo-svg >= 1.6.0
+ svgcairo.h view
@@ -0,0 +1,3 @@+#include <librsvg/rsvg.h>+#include <librsvg/rsvg-cairo.h>+#include <librsvg/librsvg-features.h>