"{ Package: 'stx:goodies/libcairo' }"

"{ NameSpace: Cairo }"

CStructure variableByteSubclass:#FontExtents

	instanceVariableNames:''

	classVariableNames:''

	poolDictionaries:''

	category:'Cairo-Objects'

!

!FontExtents class methodsFor:'initialization'!

initialize

    "Invoked at system start or when the class is dynamically loaded."

    fields := #(

        ascent

        descent

        height

        maxXAdvance

        maxYAdvance

    )

    "Modified: / 18-02-2016 / 09:09:06 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!FontExtents class methodsFor:'accessing'!

dllPath

    OperatingSystem isMSWINDOWSlike ifTrue:[

        ^ #( 'C:\Windows' 'C:\Windows\System32' "Wild guess, should not harm" )

    ].

    OperatingSystem isUNIXlike ifTrue:[

        OperatingSystem getSystemType == #linux ifTrue:[

            | path |

            path := #( '/lib' '/usr/lib' '/usr/local/lib' ).

            (OperatingSystem getSystemInfo at:#machine) = 'x86_64' ifTrue:[

                "If the machine is 64bit, prepend standard path for 32bit libs.

                 Leave standard paths at the end, as the system might be completely 

                 32bit but running on 64bit-capable CPU.

                CAVEAT: This is bit dangerous, as on 64bit OS, if ia32 libs are

                not installed byt 64bit sqlite libs are, then 64bit libs are found

                and when a function is called, segfault will occur!!

                Q: Is there a way how to figure out if the OS itself is 32bit,

                regardles on CPU?"

                path := #( '/lib32' '/usr/lib32' '/usr/local/lib32' ) , path.

            ].

            ^path

        ].

    ].

    self error:'Unsupported operating system'

    "

        SqliteLibrary dllPath

    "

    "Created: / 31-08-2011 / 18:02:17 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

libraryName

    OperatingSystem isUNIXlike ifTrue:[^'libcairo.so.2'].

    OperatingSystem isMSWINDOWSlike ifTrue:[^'cairo.dll'].

    self error:'Library name for host OS is not known'

!

sizeof

    "Returns size of undelaying structure in bytes"

    ^40

! !

!FontExtents methodsFor:'accessing'!

ascent

    "Returns double"

    ^self doubleAt:1 + 0

!

ascent: value

    self doubleAt:1 + 0 put:value

!

descent

    "Returns double"

    ^self doubleAt:1 + 8

!

descent: value

    self doubleAt:1 + 8 put:value

!

height

    "Returns double"

    ^self doubleAt:1 + 16

!

height: value

    self doubleAt:1 + 16 put:value

!

maxXAdvance

    "Returns double"

    ^self doubleAt:1 + 24

!

maxXAdvance: value

    self doubleAt:1 + 24 put:value

!

maxYAdvance

    "Returns double"

    ^self doubleAt:1 + 32

!

maxYAdvance: value

    self doubleAt:1 + 32 put:value

! !

!FontExtents class methodsFor:'documentation'!

version

    ^'$Id$'

!

version_HG

    ^ '$Changeset: <not expanded> $'

! !

FontExtents initialize!