422 lines
16 KiB
C
422 lines
16 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% TTTTT TTTTT FFFFF %
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% T T F %
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% T T FFF %
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% T T F %
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% T T F %
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% %
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% %
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% Return A Preview For A TrueType or Postscript Font %
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% %
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% Software Design %
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% Cristy %
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% July 1992 %
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% %
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% %
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% Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization %
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% dedicated to making software imaging solutions freely available. %
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% %
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% You may not use this file except in compliance with the License. You may %
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% obtain a copy of the License at %
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% %
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% https://imagemagick.org/script/license.php %
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% %
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% Unless required by applicable law or agreed to in writing, software %
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% distributed under the License is distributed on an "AS IS" BASIS, %
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% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
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% See the License for the specific language governing permissions and %
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% limitations under the License. %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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%
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*/
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/*
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Include declarations.
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*/
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#include "MagickCore/studio.h"
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#include "MagickCore/blob.h"
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#include "MagickCore/blob-private.h"
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#include "MagickCore/draw.h"
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#include "MagickCore/exception.h"
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#include "MagickCore/exception-private.h"
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#include "MagickCore/image.h"
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#include "MagickCore/image-private.h"
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#include "MagickCore/list.h"
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#include "MagickCore/magick.h"
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#include "MagickCore/memory_.h"
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#include "MagickCore/quantum-private.h"
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#include "MagickCore/resource_.h"
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#include "MagickCore/static.h"
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#include "MagickCore/string_.h"
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#include "MagickCore/module.h"
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#include "MagickCore/type.h"
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#include "MagickCore/utility.h"
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#if defined(MAGICKCORE_FREETYPE_DELEGATE)
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#include <ft2build.h>
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#if defined(FT_FREETYPE_H)
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# include FT_FREETYPE_H
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#else
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# include <freetype/freetype.h>
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#endif
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#endif
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% I s P F A %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% IsPFA()() returns MagickTrue if the image format type, identified by the
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% magick string, is PFA.
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%
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% The format of the IsPFA method is:
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%
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% MagickBooleanType IsPFA(const unsigned char *magick,const size_t length)
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%
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% A description of each parameter follows:
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%
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% o magick: compare image format pattern against these bytes.
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%
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% o length: Specifies the length of the magick string.
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%
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%
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*/
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static MagickBooleanType IsPFA(const unsigned char *magick,const size_t length)
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{
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if (length < 14)
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return(MagickFalse);
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if (LocaleNCompare((char *) magick,"%!PS-AdobeFont",14) == 0)
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return(MagickTrue);
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return(MagickFalse);
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% I s T T F %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% IsTTF()() returns MagickTrue if the image format type, identified by the
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% magick string, is TTF.
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%
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% The format of the IsTTF method is:
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%
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% MagickBooleanType IsTTF(const unsigned char *magick,const size_t length)
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%
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% A description of each parameter follows:
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%
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% o magick: compare image format pattern against these bytes.
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%
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% o length: Specifies the length of the magick string.
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%
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%
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*/
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static MagickBooleanType IsTTF(const unsigned char *magick,const size_t length)
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{
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if (length < 5)
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return(MagickFalse);
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if (((int) magick[0] == 0x00) && ((int) magick[1] == 0x01) &&
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((int) magick[2] == 0x00) && ((int) magick[3] == 0x00) &&
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((int) magick[4] == 0x00))
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return(MagickTrue);
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return(MagickFalse);
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}
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#if defined(MAGICKCORE_FREETYPE_DELEGATE)
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% R e a d T T F I m a g e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% ReadTTFImage() reads a TrueType font file and returns it. It
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% allocates the memory necessary for the new Image structure and returns a
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% pointer to the new image.
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%
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% The format of the ReadTTFImage method is:
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%
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% Image *ReadTTFImage(const ImageInfo *image_info,ExceptionInfo *exception)
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%
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% A description of each parameter follows:
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%
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% o image_info: the image info.
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%
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% o exception: return any errors or warnings in this structure.
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%
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*/
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static Image *ReadTTFImage(const ImageInfo *image_info,ExceptionInfo *exception)
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{
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char
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buffer[MagickPathExtent],
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*text;
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const char
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Text[] =
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"abcdefghijklmnopqrstuvwxyz\n"
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ\n"
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"0123456789.:,;(*!?}^)#${%^&-+@\n";
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const TypeInfo
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*type_info;
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DrawInfo
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*draw_info;
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Image
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*image;
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MagickBooleanType
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status;
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PixelInfo
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background_color;
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ssize_t
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i,
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x;
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Quantum
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*q;
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ssize_t
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y;
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/*
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Open image file.
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*/
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assert(image_info != (const ImageInfo *) NULL);
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assert(image_info->signature == MagickCoreSignature);
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if (image_info->debug != MagickFalse)
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(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
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image_info->filename);
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assert(exception != (ExceptionInfo *) NULL);
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assert(exception->signature == MagickCoreSignature);
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image=AcquireImage(image_info,exception);
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image->columns=800;
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image->rows=480;
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type_info=GetTypeInfo(image_info->filename,exception);
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if ((type_info != (const TypeInfo *) NULL) &&
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(type_info->glyphs != (char *) NULL))
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(void) CopyMagickString(image->filename,type_info->glyphs,MagickPathExtent);
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status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
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if (status == MagickFalse)
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{
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image=DestroyImageList(image);
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return((Image *) NULL);
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}
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status=SetImageExtent(image,image->columns,image->rows,exception);
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if (status == MagickFalse)
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return(DestroyImageList(image));
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/*
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Color canvas with background color
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*/
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background_color=image_info->background_color;
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for (y=0; y < (ssize_t) image->rows; y++)
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{
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q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
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if (q == (Quantum *) NULL)
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break;
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for (x=0; x < (ssize_t) image->columns; x++)
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{
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SetPixelViaPixelInfo(image,&background_color,q);
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q+=GetPixelChannels(image);
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}
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if (SyncAuthenticPixels(image,exception) == MagickFalse)
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break;
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}
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(void) CopyMagickString(image->magick,image_info->magick,MagickPathExtent);
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(void) CopyMagickString(image->filename,image_info->filename,
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MagickPathExtent);
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/*
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Prepare drawing commands
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*/
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y=20;
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draw_info=CloneDrawInfo(image_info,(DrawInfo *) NULL);
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draw_info->font=AcquireString("");
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(void) ImageToFile(image,draw_info->font,exception);
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ConcatenateString(&draw_info->primitive,"push graphic-context\n");
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(void) FormatLocaleString(buffer,MagickPathExtent,
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" viewbox 0 0 %.20g %.20g\n",(double) image->columns,(double) image->rows);
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ConcatenateString(&draw_info->primitive,buffer);
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ConcatenateString(&draw_info->primitive," font-size 18\n");
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(void) FormatLocaleString(buffer,MagickPathExtent," text 10,%.20g '",
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(double) y);
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ConcatenateString(&draw_info->primitive,buffer);
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text=EscapeString(Text,'"');
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ConcatenateString(&draw_info->primitive,text);
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text=DestroyString(text);
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(void) FormatLocaleString(buffer,MagickPathExtent,"'\n");
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ConcatenateString(&draw_info->primitive,buffer);
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y+=20*(ssize_t) MultilineCensus((char *) Text)+20;
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for (i=12; i <= 72; i+=6)
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{
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y+=i+12;
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ConcatenateString(&draw_info->primitive," font-size 18\n");
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(void) FormatLocaleString(buffer,MagickPathExtent,
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" text 10,%.20g '%.20g'\n",(double) y,(double) i);
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ConcatenateString(&draw_info->primitive,buffer);
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(void) FormatLocaleString(buffer,MagickPathExtent," font-size %.20g\n",
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(double) i);
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ConcatenateString(&draw_info->primitive,buffer);
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(void) FormatLocaleString(buffer,MagickPathExtent," text 50,%.20g "
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"'That which does not destroy me, only makes me stronger.'\n",(double) y);
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ConcatenateString(&draw_info->primitive,buffer);
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if (i >= 24)
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i+=6;
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}
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ConcatenateString(&draw_info->primitive,"pop graphic-context");
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(void) DrawImage(image,draw_info,exception);
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/*
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Relinquish resources.
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*/
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(void) RelinquishUniqueFileResource(draw_info->font);
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draw_info=DestroyDrawInfo(draw_info);
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(void) CloseBlob(image);
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return(GetFirstImageInList(image));
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}
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#endif /* MAGICKCORE_FREETYPE_DELEGATE */
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% R e g i s t e r T T F I m a g e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% RegisterTTFImage() adds attributes for the TTF image format to
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% the list of supported formats. The attributes include the image format
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% tag, a method to read and/or write the format, whether the format
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% supports the saving of more than one frame to the same file or blob,
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% whether the format supports native in-memory I/O, and a brief
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% description of the format.
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%
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% The format of the RegisterTTFImage method is:
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%
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% size_t RegisterTTFImage(void)
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%
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*/
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ModuleExport size_t RegisterTTFImage(void)
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{
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char
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version[MagickPathExtent];
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MagickInfo
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*entry;
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*version='\0';
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#if defined(FREETYPE_MAJOR) && defined(FREETYPE_MINOR) && defined(FREETYPE_PATCH)
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(void) FormatLocaleString(version,MagickPathExtent,"Freetype %d.%d.%d",
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FREETYPE_MAJOR,FREETYPE_MINOR,FREETYPE_PATCH);
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#endif
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entry=AcquireMagickInfo("TTF","DFONT","Multi-face font package");
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#if defined(MAGICKCORE_FREETYPE_DELEGATE)
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entry->decoder=(DecodeImageHandler *) ReadTTFImage;
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#endif
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entry->magick=(IsImageFormatHandler *) IsTTF;
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entry->flags^=CoderAdjoinFlag;
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if (*version != '\0')
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entry->version=ConstantString(version);
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(void) RegisterMagickInfo(entry);
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entry=AcquireMagickInfo("TTF","PFA","Postscript Type 1 font (ASCII)");
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#if defined(MAGICKCORE_FREETYPE_DELEGATE)
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entry->decoder=(DecodeImageHandler *) ReadTTFImage;
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#endif
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entry->magick=(IsImageFormatHandler *) IsPFA;
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entry->flags^=CoderAdjoinFlag;
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if (*version != '\0')
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entry->version=ConstantString(version);
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(void) RegisterMagickInfo(entry);
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entry=AcquireMagickInfo("TTF","PFB","Postscript Type 1 font (binary)");
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#if defined(MAGICKCORE_FREETYPE_DELEGATE)
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entry->decoder=(DecodeImageHandler *) ReadTTFImage;
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#endif
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entry->magick=(IsImageFormatHandler *) IsPFA;
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entry->flags^=CoderAdjoinFlag;
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if (*version != '\0')
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entry->version=ConstantString(version);
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(void) RegisterMagickInfo(entry);
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entry=AcquireMagickInfo("TTF","OTF","Open Type font");
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#if defined(MAGICKCORE_FREETYPE_DELEGATE)
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entry->decoder=(DecodeImageHandler *) ReadTTFImage;
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#endif
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entry->magick=(IsImageFormatHandler *) IsTTF;
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entry->flags^=CoderAdjoinFlag;
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if (*version != '\0')
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entry->version=ConstantString(version);
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(void) RegisterMagickInfo(entry);
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entry=AcquireMagickInfo("TTF","TTC","TrueType font collection");
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#if defined(MAGICKCORE_FREETYPE_DELEGATE)
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entry->decoder=(DecodeImageHandler *) ReadTTFImage;
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#endif
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entry->magick=(IsImageFormatHandler *) IsTTF;
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entry->flags^=CoderAdjoinFlag;
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if (*version != '\0')
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entry->version=ConstantString(version);
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(void) RegisterMagickInfo(entry);
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entry=AcquireMagickInfo("TTF","TTF","TrueType font");
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#if defined(MAGICKCORE_FREETYPE_DELEGATE)
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entry->decoder=(DecodeImageHandler *) ReadTTFImage;
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#endif
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entry->magick=(IsImageFormatHandler *) IsTTF;
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entry->flags^=CoderAdjoinFlag;
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if (*version != '\0')
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entry->version=ConstantString(version);
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(void) RegisterMagickInfo(entry);
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return(MagickImageCoderSignature);
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% U n r e g i s t e r T T F I m a g e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% UnregisterTTFImage() removes format registrations made by the
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% TTF module from the list of supported formats.
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%
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% The format of the UnregisterTTFImage method is:
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%
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% UnregisterTTFImage(void)
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%
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*/
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ModuleExport void UnregisterTTFImage(void)
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{
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(void) UnregisterMagickInfo("TTF");
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(void) UnregisterMagickInfo("TTC");
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(void) UnregisterMagickInfo("OTF");
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(void) UnregisterMagickInfo("PFA");
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(void) UnregisterMagickInfo("PFB");
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(void) UnregisterMagickInfo("PFA");
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(void) UnregisterMagickInfo("DFONT");
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}
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