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harbour-core/contrib/hbgd/gd.prg
vszakats 9687850865 2013-03-16 02:10 UTC+0100 Viktor Szakats (harbour syenar.net)
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2013-03-16 02:11:42 +01:00

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/*
* Harbour Project source code:
* GD graphic library prg level (client api) interface code.
*
* Copyright 2004 Francesco Saverio Giudice <info@fsgiudice.com>
* www - http://www.xharbour.org http://harbour-project.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING.txt. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
*
* As a special exception, the Harbour Project gives permission for
* additional uses of the text contained in its release of Harbour.
*
* The exception is that, if you link the Harbour libraries with other
* files to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the Harbour library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the Harbour
* Project under the name Harbour. If you copy code from other
* Harbour Project or Free Software Foundation releases into a copy of
* Harbour, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for Harbour, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*
*/
FUNCTION gdImageCircle( im, cx, cy, w, color )
RETURN gdImageArc( im, cx, cy, w, w, 0, 360, color )
FUNCTION gdImageFilledCircle( im, cx, cy, w, color )
RETURN gdImageFilledEllipse( im, cx, cy, w, w, color )
FUNCTION gdImageEllipse( im, cx, cy, w, h, color )
RETURN gdImageArc( im, cx, cy, w, h, 0, 360, color )
FUNCTION gdImageFTWidth( fontname, ptsize, angle )
LOCAL nWidth := 0
LOCAL cErr
LOCAL aRect := Array( 8 )
hb_default( @fontname, "Arial" )
hb_default( @ptsize, 8 )
hb_default( @angle, 0 )
cErr := gdImageStringFTEx( , @aRect, 0, fontname, ptsize, angle, 0, 0, "M" )
IF cErr == ""
nWidth := aRect[ 3 ] - aRect[ 1 ]
ENDIF
RETURN nWidth
FUNCTION gdImageFTHeight( fontname, ptsize, angle )
LOCAL nWidth := 0
LOCAL cErr
LOCAL aRect := Array( 8 )
hb_default( @fontname, "Arial" )
hb_default( @ptsize, 8 )
hb_default( @angle, 0 )
cErr := gdImageStringFTEx( , @aRect, 0, fontname, ptsize, angle, 0, 0, "M" )
IF cErr == ""
nWidth := aRect[ 2 ] - aRect[ 8 ]
ENDIF
RETURN nWidth
FUNCTION gdImageFTSize( string, fontname, ptsize, angle )
LOCAL nWidth := 0
LOCAL nHeight := 0
LOCAL nX, nY
LOCAL cErr
LOCAL aRect := Array( 8 )
hb_default( @fontname, "Arial" )
hb_default( @ptsize, 8 )
hb_default( @angle, 0 )
cErr := gdImageStringFTEx( , @aRect, 0, fontname, ptsize, angle, 0, 0, string )
IF cErr == ""
nWidth := aRect[ 3 ] - aRect[ 1 ]
nHeight := aRect[ 2 ] - aRect[ 8 ]
nX := aRect[ 1 ]
nY := aRect[ 2 ]
ENDIF
RETURN { nWidth, nHeight, nX, nY }
FUNCTION gdImageStringFT( im, fg, fontname, ptsize, angle, x, y, string, ;
linespacing, charmap, resolution )
LOCAL cErr
LOCAL aRect := Array( 8 )
cErr := gdImageStringFTEx( , @aRect, fg, fontname, ptsize, angle, x, y, string, linespacing, charmap, resolution )
IF cErr == ""
cErr := gdImageStringFTEx( im, aRect, fg, fontname, ptsize, angle, x, y, string, linespacing, charmap, resolution )
ENDIF
RETURN cErr
FUNCTION gdImageFromFile( cFile )
LOCAL cPath, cName, cExt, cDrive
LOCAL cType, cMime
LOCAL hFile := { => }
LOCAL oImage
IF hb_FileExists( cFile )
hb_FNameSplit( cFile, @cPath, @cName, @cExt, @cDrive )
SWITCH Lower( cExt )
CASE ".jpg"
CASE ".jpeg"
hFile[ "file" ] := cFile
hFile[ "path" ] := cPath
hFile[ "name" ] := cName
hFile[ "ext" ] := cExt
hFile[ "drive" ] := cDrive
cType := "jpeg"
cMime := "image/jpeg"
oImage := GDImage():LoadFromJpeg( cFile )
EXIT
CASE ".gif"
hFile[ "file" ] := cFile
hFile[ "path" ] := cPath
hFile[ "name" ] := cName
hFile[ "ext" ] := cExt
hFile[ "drive" ] := cDrive
cType := "gif"
cMime := "image/gif"
oImage := GDImage():LoadFromGif( cFile )
EXIT
CASE ".png"
hFile[ "file" ] := cFile
hFile[ "path" ] := cPath
hFile[ "name" ] := cName
hFile[ "ext" ] := cExt
hFile[ "drive" ] := cDrive
cType := "png"
cMime := "image/png"
oImage := GDImage():LoadFromPng( cFile )
EXIT
ENDSWITCH
ENDIF
RETURN { oImage, hFile, cType, cMime }
FUNCTION gdImageToString( oImage )
LOCAL cString
IF HB_ISOBJECT( oImage ) .AND. ( oImage:className() == "GDIMAGE" .OR. oImage:IsDerivedFrom( "GDIMAGE" ) ) .AND. oImage:cType != NIL
SWITCH oImage:cType
CASE "jpeg"
cString := oImage:ToStringJpeg()
EXIT
CASE "gif"
cString := oImage:ToStringGif()
EXIT
CASE "png"
cString := oImage:ToStringPng()
EXIT
ENDSWITCH
ENDIF
RETURN cString
PROCEDURE gdImageToFile( oImage, cFile )
LOCAL cString, cExt
hb_default( @cFile, "image" )
IF HB_ISOBJECT( oImage ) .AND. ( oImage:className() == "GDIMAGE" .OR. oImage:IsDerivedFrom( "GDIMAGE" ) ) .AND. oImage:cType != NIL
SWITCH oImage:cType
CASE "jpeg"
cString := oImage:ToStringJpeg()
cExt := ".jpg"
EXIT
CASE "gif"
cString := oImage:ToStringGif()
cExt := ".gif"
EXIT
CASE "png"
cString := oImage:ToStringPng()
cExt := ".png"
EXIT
OTHERWISE
cExt := ""
ENDSWITCH
IF cString != NIL
hb_MemoWrit( cFile + cExt, cString )
ENDIF
ENDIF
RETURN
PROCEDURE gdImageToHandle( oImage, nHandle )
hb_default( @nHandle, 1 )
IF HB_ISOBJECT( oImage ) .AND. ( oImage:className() == "GDIMAGE" .OR. oImage:IsDerivedFrom( "GDIMAGE" ) )
IF oImage:cType != NIL
SWITCH oImage:cType
CASE "jpeg"
oImage:OutputJpeg( nHandle )
EXIT
CASE "gif"
oImage:OutputGif( nHandle )
EXIT
CASE "png"
oImage:OutputPng( nHandle )
EXIT
ENDSWITCH
ENDIF
ENDIF
RETURN