2102 lines
70 KiB
C
2102 lines
70 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% AAA N N N N OOO TTTTT AAA TTTTT EEEEE %
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% A A NN N NN N O O T A A T E %
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% AAAAA N N N N N N O O T AAAAA T EEE %
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% A A N NN N NN O O T A A T E %
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% A A N N N N OOO T A A T EEEEE %
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% %
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% %
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% MagickCore Image Annotation Methods %
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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 1999-2016 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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% http://www.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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% Digital Applications (www.digapp.com) contributed the stroked text algorithm.
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% It was written by Leonard Rosenthol.
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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/annotate.h"
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#include "MagickCore/annotate-private.h"
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#include "MagickCore/attribute.h"
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#include "MagickCore/cache-private.h"
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#include "MagickCore/cache-view.h"
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#include "MagickCore/channel.h"
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#include "MagickCore/client.h"
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#include "MagickCore/color.h"
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#include "MagickCore/color-private.h"
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#include "MagickCore/colorspace-private.h"
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#include "MagickCore/composite.h"
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#include "MagickCore/composite-private.h"
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#include "MagickCore/constitute.h"
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#include "MagickCore/draw.h"
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#include "MagickCore/draw-private.h"
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#include "MagickCore/enhance.h"
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#include "MagickCore/exception.h"
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#include "MagickCore/exception-private.h"
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#include "MagickCore/gem.h"
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#include "MagickCore/geometry.h"
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#include "MagickCore/image-private.h"
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#include "MagickCore/log.h"
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#include "MagickCore/quantum.h"
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#include "MagickCore/quantum-private.h"
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#include "MagickCore/pixel-accessor.h"
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#include "MagickCore/property.h"
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#include "MagickCore/resource_.h"
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#include "MagickCore/semaphore.h"
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#include "MagickCore/statistic.h"
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#include "MagickCore/string_.h"
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#include "MagickCore/token.h"
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#include "MagickCore/token-private.h"
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#include "MagickCore/transform-private.h"
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#include "MagickCore/type.h"
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#include "MagickCore/utility.h"
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#include "MagickCore/utility-private.h"
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#include "MagickCore/xwindow.h"
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#include "MagickCore/xwindow-private.h"
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#if defined(MAGICKCORE_FREETYPE_DELEGATE)
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#if defined(__MINGW32__) || defined(__MINGW64__)
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# undef interface
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#endif
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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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#if defined(FT_GLYPH_H)
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# include FT_GLYPH_H
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#else
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# include <freetype/ftglyph.h>
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#endif
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#if defined(FT_OUTLINE_H)
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# include FT_OUTLINE_H
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#else
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# include <freetype/ftoutln.h>
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#endif
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#if defined(FT_BBOX_H)
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# include FT_BBOX_H
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#else
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# include <freetype/ftbbox.h>
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#endif /* defined(FT_BBOX_H) */
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#endif
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#if defined(MAGICKCORE_RAQM_DELEGATE)
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#include <raqm.h>
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#endif
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typedef struct _GraphemeInfo
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{
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size_t
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index,
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x_offset,
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x_advance,
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y_offset;
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size_t
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cluster;
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} GraphemeInfo;
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/*
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Annotate semaphores.
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*/
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static SemaphoreInfo
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*annotate_semaphore = (SemaphoreInfo *) NULL;
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/*
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Forward declarations.
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*/
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static MagickBooleanType
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RenderType(Image *,const DrawInfo *,const PointInfo *,TypeMetric *,
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ExceptionInfo *),
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RenderPostscript(Image *,const DrawInfo *,const PointInfo *,TypeMetric *,
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ExceptionInfo *),
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RenderFreetype(Image *,const DrawInfo *,const char *,const PointInfo *,
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TypeMetric *,ExceptionInfo *),
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RenderX11(Image *,const DrawInfo *,const PointInfo *,TypeMetric *,
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||
ExceptionInfo *);
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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+ A n n o t a t e C o m p o n e n t G e n e s i s %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% AnnotateComponentGenesis() instantiates the annotate component.
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%
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% The format of the AnnotateComponentGenesis method is:
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%
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% MagickBooleanType AnnotateComponentGenesis(void)
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%
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*/
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MagickPrivate MagickBooleanType AnnotateComponentGenesis(void)
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{
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if (annotate_semaphore == (SemaphoreInfo *) NULL)
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annotate_semaphore=AcquireSemaphoreInfo();
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return(MagickTrue);
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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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+ A n n o t a t e C o m p o n e n t T e r m i n u s %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% AnnotateComponentTerminus() destroys the annotate component.
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%
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% The format of the AnnotateComponentTerminus method is:
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%
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% AnnotateComponentTerminus(void)
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%
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*/
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MagickPrivate void AnnotateComponentTerminus(void)
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{
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if (annotate_semaphore == (SemaphoreInfo *) NULL)
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ActivateSemaphoreInfo(&annotate_semaphore);
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RelinquishSemaphoreInfo(&annotate_semaphore);
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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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% A n n o t a t e 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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% AnnotateImage() annotates an image with text. Optionally you can include
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% any of the following bits of information about the image by embedding
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% the appropriate special characters:
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%
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% \n newline
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% \r carriage return
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% < less-than character.
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% > greater-than character.
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% & ampersand character.
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% %% a percent sign
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% %b file size of image read in
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% %c comment meta-data property
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% %d directory component of path
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% %e filename extension or suffix
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% %f filename (including suffix)
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% %g layer canvas page geometry (equivalent to "%Wx%H%X%Y")
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% %h current image height in pixels
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% %i image filename (note: becomes output filename for "info:")
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% %k CALCULATED: number of unique colors
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% %l label meta-data property
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% %m image file format (file magic)
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% %n number of images in current image sequence
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% %o output filename (used for delegates)
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% %p index of image in current image list
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% %q quantum depth (compile-time constant)
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% %r image class and colorspace
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% %s scene number (from input unless re-assigned)
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% %t filename without directory or extension (suffix)
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% %u unique temporary filename (used for delegates)
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% %w current width in pixels
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% %x x resolution (density)
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% %y y resolution (density)
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% %z image depth (as read in unless modified, image save depth)
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% %A image transparency channel enabled (true/false)
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% %C image compression type
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% %D image GIF dispose method
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% %G original image size (%wx%h; before any resizes)
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% %H page (canvas) height
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% %M Magick filename (original file exactly as given, including read mods)
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% %O page (canvas) offset ( = %X%Y )
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% %P page (canvas) size ( = %Wx%H )
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% %Q image compression quality ( 0 = default )
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% %S ?? scenes ??
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% %T image time delay (in centi-seconds)
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% %U image resolution units
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% %W page (canvas) width
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% %X page (canvas) x offset (including sign)
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% %Y page (canvas) y offset (including sign)
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% %Z unique filename (used for delegates)
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% %@ CALCULATED: trim bounding box (without actually trimming)
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% %# CALCULATED: 'signature' hash of image values
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%
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% The format of the AnnotateImage method is:
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%
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% MagickBooleanType AnnotateImage(Image *image,DrawInfo *draw_info,
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% 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: the image.
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%
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% o draw_info: the draw 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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MagickExport MagickBooleanType AnnotateImage(Image *image,
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const DrawInfo *draw_info,ExceptionInfo *exception)
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{
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char
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primitive[MagickPathExtent],
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**textlist;
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DrawInfo
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*annotate,
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*annotate_info;
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GeometryInfo
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geometry_info;
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MagickBooleanType
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status;
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PointInfo
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offset;
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RectangleInfo
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geometry;
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register ssize_t
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i;
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size_t
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length;
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TypeMetric
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metrics;
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size_t
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height,
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number_lines;
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assert(image != (Image *) NULL);
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assert(image->signature == MagickCoreSignature);
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if (image->debug != MagickFalse)
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(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
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assert(draw_info != (DrawInfo *) NULL);
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assert(draw_info->signature == MagickCoreSignature);
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||
if (draw_info->text == (char *) NULL)
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||
return(MagickFalse);
|
||
if (*draw_info->text == '\0')
|
||
return(MagickTrue);
|
||
textlist=StringToList(draw_info->text);
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||
if (textlist == (char **) NULL)
|
||
return(MagickFalse);
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||
length=strlen(textlist[0]);
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for (i=1; textlist[i] != (char *) NULL; i++)
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if (strlen(textlist[i]) > length)
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length=strlen(textlist[i]);
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number_lines=(size_t) i;
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annotate=CloneDrawInfo((ImageInfo *) NULL,draw_info);
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annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
|
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SetGeometry(image,&geometry);
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SetGeometryInfo(&geometry_info);
|
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if (annotate_info->geometry != (char *) NULL)
|
||
{
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(void) ParsePageGeometry(image,annotate_info->geometry,&geometry,
|
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exception);
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(void) ParseGeometry(annotate_info->geometry,&geometry_info);
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}
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if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
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return(MagickFalse);
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if (IsGrayColorspace(image->colorspace) != MagickFalse)
|
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(void) SetImageColorspace(image,sRGBColorspace,exception);
|
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status=MagickTrue;
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||
for (i=0; textlist[i] != (char *) NULL; i++)
|
||
{
|
||
/*
|
||
Position text relative to image.
|
||
*/
|
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annotate_info->affine.tx=geometry_info.xi-image->page.x;
|
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annotate_info->affine.ty=geometry_info.psi-image->page.y;
|
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(void) CloneString(&annotate->text,textlist[i]);
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(void) GetTypeMetrics(image,annotate,&metrics,exception);
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height=(ssize_t) (metrics.ascent-metrics.descent+
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draw_info->interline_spacing+0.5);
|
||
switch (annotate->gravity)
|
||
{
|
||
case UndefinedGravity:
|
||
default:
|
||
{
|
||
offset.x=annotate_info->affine.tx+i*annotate_info->affine.ry*height;
|
||
offset.y=annotate_info->affine.ty+i*annotate_info->affine.sy*height;
|
||
break;
|
||
}
|
||
case NorthWestGravity:
|
||
{
|
||
offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+i*
|
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annotate_info->affine.ry*height+annotate_info->affine.ry*
|
||
(metrics.ascent+metrics.descent);
|
||
offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+i*
|
||
annotate_info->affine.sy*height+annotate_info->affine.sy*
|
||
metrics.ascent;
|
||
break;
|
||
}
|
||
case NorthGravity:
|
||
{
|
||
offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+
|
||
geometry.width/2.0+i*annotate_info->affine.ry*height-
|
||
annotate_info->affine.sx*(metrics.width+metrics.bounds.x1)/2.0+
|
||
annotate_info->affine.ry*(metrics.ascent+metrics.descent);
|
||
offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+i*
|
||
annotate_info->affine.sy*height+annotate_info->affine.sy*
|
||
metrics.ascent-annotate_info->affine.rx*(metrics.width-
|
||
metrics.bounds.x1)/2.0;
|
||
break;
|
||
}
|
||
case NorthEastGravity:
|
||
{
|
||
offset.x=(geometry.width == 0 ? 1.0 : -1.0)*annotate_info->affine.tx+
|
||
geometry.width+i*annotate_info->affine.ry*height-
|
||
annotate_info->affine.sx*(metrics.width+metrics.bounds.x1)+
|
||
annotate_info->affine.ry*(metrics.ascent+metrics.descent)-1.0;
|
||
offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+i*
|
||
annotate_info->affine.sy*height+annotate_info->affine.sy*
|
||
metrics.ascent-annotate_info->affine.rx*(metrics.width-
|
||
metrics.bounds.x1);
|
||
break;
|
||
}
|
||
case WestGravity:
|
||
{
|
||
offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+i*
|
||
annotate_info->affine.ry*height+annotate_info->affine.ry*
|
||
(metrics.ascent+metrics.descent-(number_lines-1.0)*height)/2.0;
|
||
offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+
|
||
geometry.height/2.0+i*annotate_info->affine.sy*height+
|
||
annotate_info->affine.sy*(metrics.ascent+metrics.descent-
|
||
(number_lines-1.0)*height)/2.0;
|
||
break;
|
||
}
|
||
case CenterGravity:
|
||
{
|
||
offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+
|
||
geometry.width/2.0+i*annotate_info->affine.ry*height-
|
||
annotate_info->affine.sx*(metrics.width+metrics.bounds.x1)/2.0+
|
||
annotate_info->affine.ry*(metrics.ascent+metrics.descent-
|
||
(number_lines-1.0)*height)/2.0;
|
||
offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+
|
||
geometry.height/2.0+i*annotate_info->affine.sy*height-
|
||
annotate_info->affine.rx*(metrics.width+metrics.bounds.x1)/2.0+
|
||
annotate_info->affine.sy*(metrics.ascent+metrics.descent-
|
||
(number_lines-1.0)*height)/2.0;
|
||
break;
|
||
}
|
||
case EastGravity:
|
||
{
|
||
offset.x=(geometry.width == 0 ? 1.0 : -1.0)*annotate_info->affine.tx+
|
||
geometry.width+i*annotate_info->affine.ry*height-
|
||
annotate_info->affine.sx*(metrics.width+metrics.bounds.x1)+
|
||
annotate_info->affine.ry*(metrics.ascent+metrics.descent-
|
||
(number_lines-1.0)*height)/2.0-1.0;
|
||
offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+
|
||
geometry.height/2.0+i*annotate_info->affine.sy*height-
|
||
annotate_info->affine.rx*(metrics.width+metrics.bounds.x1)+
|
||
annotate_info->affine.sy*(metrics.ascent+metrics.descent-
|
||
(number_lines-1.0)*height)/2.0;
|
||
break;
|
||
}
|
||
case SouthWestGravity:
|
||
{
|
||
offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+i*
|
||
annotate_info->affine.ry*height-annotate_info->affine.ry*
|
||
(number_lines-1.0)*height;
|
||
offset.y=(geometry.height == 0 ? 1.0 : -1.0)*annotate_info->affine.ty+
|
||
geometry.height+i*annotate_info->affine.sy*height-
|
||
annotate_info->affine.sy*(number_lines-1.0)*height+metrics.descent;
|
||
break;
|
||
}
|
||
case SouthGravity:
|
||
{
|
||
offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+
|
||
geometry.width/2.0+i*annotate_info->affine.ry*height-
|
||
annotate_info->affine.sx*(metrics.width+metrics.bounds.x1)/2.0-
|
||
annotate_info->affine.ry*(number_lines-1.0)*height/2.0;
|
||
offset.y=(geometry.height == 0 ? 1.0 : -1.0)*annotate_info->affine.ty+
|
||
geometry.height+i*annotate_info->affine.sy*height-
|
||
annotate_info->affine.rx*(metrics.width+metrics.bounds.x1)/2.0-
|
||
annotate_info->affine.sy*(number_lines-1.0)*height+metrics.descent;
|
||
break;
|
||
}
|
||
case SouthEastGravity:
|
||
{
|
||
offset.x=(geometry.width == 0 ? 1.0 : -1.0)*annotate_info->affine.tx+
|
||
geometry.width+i*annotate_info->affine.ry*height-
|
||
annotate_info->affine.sx*(metrics.width+metrics.bounds.x1)-
|
||
annotate_info->affine.ry*(number_lines-1.0)*height-1.0;
|
||
offset.y=(geometry.height == 0 ? 1.0 : -1.0)*annotate_info->affine.ty+
|
||
geometry.height+i*annotate_info->affine.sy*height-
|
||
annotate_info->affine.rx*(metrics.width+metrics.bounds.x1)-
|
||
annotate_info->affine.sy*(number_lines-1.0)*height+metrics.descent;
|
||
break;
|
||
}
|
||
}
|
||
switch (annotate->align)
|
||
{
|
||
case LeftAlign:
|
||
{
|
||
offset.x=annotate_info->affine.tx+i*annotate_info->affine.ry*height;
|
||
offset.y=annotate_info->affine.ty+i*annotate_info->affine.sy*height;
|
||
break;
|
||
}
|
||
case CenterAlign:
|
||
{
|
||
offset.x=annotate_info->affine.tx+i*annotate_info->affine.ry*height-
|
||
annotate_info->affine.sx*(metrics.width+metrics.bounds.x1)/2.0;
|
||
offset.y=annotate_info->affine.ty+i*annotate_info->affine.sy*height-
|
||
annotate_info->affine.rx*(metrics.width+metrics.bounds.x1)/2.0;
|
||
break;
|
||
}
|
||
case RightAlign:
|
||
{
|
||
offset.x=annotate_info->affine.tx+i*annotate_info->affine.ry*height-
|
||
annotate_info->affine.sx*(metrics.width+metrics.bounds.x1);
|
||
offset.y=annotate_info->affine.ty+i*annotate_info->affine.sy*height-
|
||
annotate_info->affine.rx*(metrics.width+metrics.bounds.x1);
|
||
break;
|
||
}
|
||
default:
|
||
break;
|
||
}
|
||
if (draw_info->undercolor.alpha != TransparentAlpha)
|
||
{
|
||
DrawInfo
|
||
*undercolor_info;
|
||
|
||
/*
|
||
Text box.
|
||
*/
|
||
undercolor_info=CloneDrawInfo((ImageInfo *) NULL,(DrawInfo *) NULL);
|
||
undercolor_info->fill=draw_info->undercolor;
|
||
undercolor_info->affine=draw_info->affine;
|
||
undercolor_info->affine.tx=offset.x-draw_info->affine.ry*metrics.ascent;
|
||
undercolor_info->affine.ty=offset.y-draw_info->affine.sy*metrics.ascent;
|
||
(void) FormatLocaleString(primitive,MagickPathExtent,
|
||
"rectangle 0.0,0.0 %g,%g",metrics.origin.x,(double) height);
|
||
(void) CloneString(&undercolor_info->primitive,primitive);
|
||
(void) DrawImage(image,undercolor_info,exception);
|
||
(void) DestroyDrawInfo(undercolor_info);
|
||
}
|
||
annotate_info->affine.tx=offset.x;
|
||
annotate_info->affine.ty=offset.y;
|
||
(void) FormatLocaleString(primitive,MagickPathExtent,"stroke-width %g "
|
||
"line 0,0 %g,0",metrics.underline_thickness,metrics.width);
|
||
if (annotate->decorate == OverlineDecoration)
|
||
{
|
||
annotate_info->affine.ty-=(draw_info->affine.sy*(metrics.ascent+
|
||
metrics.descent-metrics.underline_position));
|
||
(void) CloneString(&annotate_info->primitive,primitive);
|
||
(void) DrawImage(image,annotate_info,exception);
|
||
}
|
||
else
|
||
if (annotate->decorate == UnderlineDecoration)
|
||
{
|
||
annotate_info->affine.ty-=(draw_info->affine.sy*
|
||
metrics.underline_position);
|
||
(void) CloneString(&annotate_info->primitive,primitive);
|
||
(void) DrawImage(image,annotate_info,exception);
|
||
}
|
||
/*
|
||
Annotate image with text.
|
||
*/
|
||
status=RenderType(image,annotate,&offset,&metrics,exception);
|
||
if (status == MagickFalse)
|
||
break;
|
||
if (annotate->decorate == LineThroughDecoration)
|
||
{
|
||
annotate_info->affine.ty-=(draw_info->affine.sy*(height+
|
||
metrics.underline_position+metrics.descent)/2.0);
|
||
(void) CloneString(&annotate_info->primitive,primitive);
|
||
(void) DrawImage(image,annotate_info,exception);
|
||
}
|
||
}
|
||
/*
|
||
Relinquish resources.
|
||
*/
|
||
annotate_info=DestroyDrawInfo(annotate_info);
|
||
annotate=DestroyDrawInfo(annotate);
|
||
for (i=0; textlist[i] != (char *) NULL; i++)
|
||
textlist[i]=DestroyString(textlist[i]);
|
||
textlist=(char **) RelinquishMagickMemory(textlist);
|
||
return(status);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% F o r m a t M a g i c k C a p t i o n %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% FormatMagickCaption() formats a caption so that it fits within the image
|
||
% width. It returns the number of lines in the formatted caption.
|
||
%
|
||
% The format of the FormatMagickCaption method is:
|
||
%
|
||
% ssize_t FormatMagickCaption(Image *image,DrawInfo *draw_info,
|
||
% const MagickBooleanType split,TypeMetric *metrics,char **caption,
|
||
% ExceptionInfo *exception)
|
||
%
|
||
% A description of each parameter follows.
|
||
%
|
||
% o image: The image.
|
||
%
|
||
% o draw_info: the draw info.
|
||
%
|
||
% o split: when no convenient line breaks-- insert newline.
|
||
%
|
||
% o metrics: Return the font metrics in this structure.
|
||
%
|
||
% o caption: the caption.
|
||
%
|
||
% o exception: return any errors or warnings in this structure.
|
||
%
|
||
*/
|
||
MagickExport ssize_t FormatMagickCaption(Image *image,DrawInfo *draw_info,
|
||
const MagickBooleanType split,TypeMetric *metrics,char **caption,
|
||
ExceptionInfo *exception)
|
||
{
|
||
char
|
||
*text;
|
||
|
||
MagickBooleanType
|
||
digit,
|
||
status;
|
||
|
||
register char
|
||
*p,
|
||
*q,
|
||
*s;
|
||
|
||
register ssize_t
|
||
i;
|
||
|
||
size_t
|
||
width;
|
||
|
||
ssize_t
|
||
n;
|
||
|
||
digit=MagickFalse;
|
||
text=AcquireString(draw_info->text);
|
||
q=draw_info->text;
|
||
s=(char *) NULL;
|
||
for (p=(*caption); GetUTFCode(p) != 0; p+=GetUTFOctets(p))
|
||
{
|
||
if ((digit == MagickFalse) && (IsUTFSpace(GetUTFCode(p)) != MagickFalse))
|
||
s=p;
|
||
digit=((GetUTFCode(p) >= 0x0030) && (GetUTFCode(p) <= 0x0039)) ?
|
||
MagickTrue : MagickFalse;
|
||
if (GetUTFCode(p) == '\n')
|
||
q=draw_info->text;
|
||
for (i=0; i < (ssize_t) GetUTFOctets(p); i++)
|
||
*q++=(*(p+i));
|
||
*q='\0';
|
||
status=GetTypeMetrics(image,draw_info,metrics,exception);
|
||
if (status == MagickFalse)
|
||
break;
|
||
width=(size_t) floor(metrics->width+draw_info->stroke_width+0.5);
|
||
if ((width <= image->columns) || (strcmp(text,draw_info->text) == 0))
|
||
continue;
|
||
(void) strcpy(text,draw_info->text);
|
||
if ((s != (char *) NULL) && (GetUTFOctets(s) == 1))
|
||
{
|
||
*s='\n';
|
||
p=s;
|
||
}
|
||
else
|
||
if ((s != (char *) NULL) || (split != MagickFalse))
|
||
{
|
||
char
|
||
*target;
|
||
|
||
/*
|
||
No convenient line breaks-- insert newline.
|
||
*/
|
||
target=AcquireString(*caption);
|
||
n=p-(*caption);
|
||
CopyMagickString(target,*caption,n+1);
|
||
ConcatenateMagickString(target,"\n",strlen(*caption)+1);
|
||
ConcatenateMagickString(target,p,strlen(*caption)+2);
|
||
(void) DestroyString(*caption);
|
||
*caption=target;
|
||
p=(*caption)+n;
|
||
}
|
||
q=draw_info->text;
|
||
s=(char *) NULL;
|
||
}
|
||
text=DestroyString(text);
|
||
n=0;
|
||
for (p=(*caption); GetUTFCode(p) != 0; p+=GetUTFOctets(p))
|
||
if (GetUTFCode(p) == '\n')
|
||
n++;
|
||
return(n);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% G e t M u l t i l i n e T y p e M e t r i c s %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% GetMultilineTypeMetrics() returns the following information for the
|
||
% specified font and text:
|
||
%
|
||
% character width
|
||
% character height
|
||
% ascender
|
||
% descender
|
||
% text width
|
||
% text height
|
||
% maximum horizontal advance
|
||
% bounds: x1
|
||
% bounds: y1
|
||
% bounds: x2
|
||
% bounds: y2
|
||
% origin: x
|
||
% origin: y
|
||
% underline position
|
||
% underline thickness
|
||
%
|
||
% This method is like GetTypeMetrics() but it returns the maximum text width
|
||
% and height for multiple lines of text.
|
||
%
|
||
% The format of the GetMultilineTypeMetrics method is:
|
||
%
|
||
% MagickBooleanType GetMultilineTypeMetrics(Image *image,
|
||
% const DrawInfo *draw_info,TypeMetric *metrics,ExceptionInfo *exception)
|
||
%
|
||
% A description of each parameter follows:
|
||
%
|
||
% o image: the image.
|
||
%
|
||
% o draw_info: the draw info.
|
||
%
|
||
% o metrics: Return the font metrics in this structure.
|
||
%
|
||
% o exception: return any errors or warnings in this structure.
|
||
%
|
||
*/
|
||
MagickExport MagickBooleanType GetMultilineTypeMetrics(Image *image,
|
||
const DrawInfo *draw_info,TypeMetric *metrics,ExceptionInfo *exception)
|
||
{
|
||
char
|
||
**textlist;
|
||
|
||
DrawInfo
|
||
*annotate_info;
|
||
|
||
MagickBooleanType
|
||
status;
|
||
|
||
register ssize_t
|
||
i;
|
||
|
||
TypeMetric
|
||
extent;
|
||
|
||
assert(image != (Image *) NULL);
|
||
assert(image->signature == MagickCoreSignature);
|
||
if (image->debug != MagickFalse)
|
||
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
|
||
assert(draw_info != (DrawInfo *) NULL);
|
||
assert(draw_info->text != (char *) NULL);
|
||
assert(draw_info->signature == MagickCoreSignature);
|
||
if (*draw_info->text == '\0')
|
||
return(MagickFalse);
|
||
annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
|
||
annotate_info->text=DestroyString(annotate_info->text);
|
||
/*
|
||
Convert newlines to multiple lines of text.
|
||
*/
|
||
textlist=StringToList(draw_info->text);
|
||
if (textlist == (char **) NULL)
|
||
return(MagickFalse);
|
||
annotate_info->render=MagickFalse;
|
||
annotate_info->direction=UndefinedDirection;
|
||
(void) ResetMagickMemory(metrics,0,sizeof(*metrics));
|
||
(void) ResetMagickMemory(&extent,0,sizeof(extent));
|
||
/*
|
||
Find the widest of the text lines.
|
||
*/
|
||
annotate_info->text=textlist[0];
|
||
status=GetTypeMetrics(image,annotate_info,&extent,exception);
|
||
*metrics=extent;
|
||
for (i=1; textlist[i] != (char *) NULL; i++)
|
||
{
|
||
annotate_info->text=textlist[i];
|
||
status=GetTypeMetrics(image,annotate_info,&extent,exception);
|
||
if (extent.width > metrics->width)
|
||
*metrics=extent;
|
||
}
|
||
metrics->height=(double) (i*(size_t) (metrics->ascent-metrics->descent+0.5)+
|
||
(i-1)*draw_info->interline_spacing);
|
||
/*
|
||
Relinquish resources.
|
||
*/
|
||
annotate_info->text=(char *) NULL;
|
||
annotate_info=DestroyDrawInfo(annotate_info);
|
||
for (i=0; textlist[i] != (char *) NULL; i++)
|
||
textlist[i]=DestroyString(textlist[i]);
|
||
textlist=(char **) RelinquishMagickMemory(textlist);
|
||
return(status);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% G e t T y p e M e t r i c s %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% GetTypeMetrics() returns the following information for the specified font
|
||
% and text:
|
||
%
|
||
% character width
|
||
% character height
|
||
% ascender
|
||
% descender
|
||
% text width
|
||
% text height
|
||
% maximum horizontal advance
|
||
% bounds: x1
|
||
% bounds: y1
|
||
% bounds: x2
|
||
% bounds: y2
|
||
% origin: x
|
||
% origin: y
|
||
% underline position
|
||
% underline thickness
|
||
%
|
||
% The format of the GetTypeMetrics method is:
|
||
%
|
||
% MagickBooleanType GetTypeMetrics(Image *image,const DrawInfo *draw_info,
|
||
% TypeMetric *metrics,ExceptionInfo *exception)
|
||
%
|
||
% A description of each parameter follows:
|
||
%
|
||
% o image: the image.
|
||
%
|
||
% o draw_info: the draw info.
|
||
%
|
||
% o metrics: Return the font metrics in this structure.
|
||
%
|
||
% o exception: return any errors or warnings in this structure.
|
||
%
|
||
*/
|
||
MagickExport MagickBooleanType GetTypeMetrics(Image *image,
|
||
const DrawInfo *draw_info,TypeMetric *metrics,ExceptionInfo *exception)
|
||
{
|
||
DrawInfo
|
||
*annotate_info;
|
||
|
||
MagickBooleanType
|
||
status;
|
||
|
||
PointInfo
|
||
offset;
|
||
|
||
assert(image != (Image *) NULL);
|
||
assert(image->signature == MagickCoreSignature);
|
||
if (image->debug != MagickFalse)
|
||
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
|
||
assert(draw_info != (DrawInfo *) NULL);
|
||
assert(draw_info->text != (char *) NULL);
|
||
assert(draw_info->signature == MagickCoreSignature);
|
||
annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
|
||
annotate_info->render=MagickFalse;
|
||
annotate_info->direction=UndefinedDirection;
|
||
(void) ResetMagickMemory(metrics,0,sizeof(*metrics));
|
||
offset.x=0.0;
|
||
offset.y=0.0;
|
||
status=RenderType(image,annotate_info,&offset,metrics,exception);
|
||
if (image->debug != MagickFalse)
|
||
(void) LogMagickEvent(AnnotateEvent,GetMagickModule(),"Metrics: text: %s; "
|
||
"width: %g; height: %g; ascent: %g; descent: %g; max advance: %g; "
|
||
"bounds: %g,%g %g,%g; origin: %g,%g; pixels per em: %g,%g; "
|
||
"underline position: %g; underline thickness: %g",annotate_info->text,
|
||
metrics->width,metrics->height,metrics->ascent,metrics->descent,
|
||
metrics->max_advance,metrics->bounds.x1,metrics->bounds.y1,
|
||
metrics->bounds.x2,metrics->bounds.y2,metrics->origin.x,metrics->origin.y,
|
||
metrics->pixels_per_em.x,metrics->pixels_per_em.y,
|
||
metrics->underline_position,metrics->underline_thickness);
|
||
annotate_info=DestroyDrawInfo(annotate_info);
|
||
return(status);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
+ R e n d e r T y p e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% RenderType() renders text on the image. It also returns the bounding box of
|
||
% the text relative to the image.
|
||
%
|
||
% The format of the RenderType method is:
|
||
%
|
||
% MagickBooleanType RenderType(Image *image,DrawInfo *draw_info,
|
||
% const PointInfo *offset,TypeMetric *metrics,ExceptionInfo *exception)
|
||
%
|
||
% A description of each parameter follows:
|
||
%
|
||
% o image: the image.
|
||
%
|
||
% o draw_info: the draw info.
|
||
%
|
||
% o offset: (x,y) location of text relative to image.
|
||
%
|
||
% o metrics: bounding box of text.
|
||
%
|
||
% o exception: return any errors or warnings in this structure.
|
||
%
|
||
*/
|
||
static MagickBooleanType RenderType(Image *image,const DrawInfo *draw_info,
|
||
const PointInfo *offset,TypeMetric *metrics,ExceptionInfo *exception)
|
||
{
|
||
const TypeInfo
|
||
*type_info;
|
||
|
||
DrawInfo
|
||
*annotate_info;
|
||
|
||
MagickBooleanType
|
||
status;
|
||
|
||
type_info=(const TypeInfo *) NULL;
|
||
if (draw_info->font != (char *) NULL)
|
||
{
|
||
if (*draw_info->font == '@')
|
||
{
|
||
status=RenderFreetype(image,draw_info,draw_info->encoding,offset,
|
||
metrics,exception);
|
||
return(status);
|
||
}
|
||
if (*draw_info->font == '-')
|
||
return(RenderX11(image,draw_info,offset,metrics,exception));
|
||
if (IsPathAccessible(draw_info->font) != MagickFalse)
|
||
{
|
||
status=RenderFreetype(image,draw_info,draw_info->encoding,offset,
|
||
metrics,exception);
|
||
return(status);
|
||
}
|
||
type_info=GetTypeInfo(draw_info->font,exception);
|
||
if (type_info == (const TypeInfo *) NULL)
|
||
(void) ThrowMagickException(exception,GetMagickModule(),TypeWarning,
|
||
"UnableToReadFont","`%s'",draw_info->font);
|
||
}
|
||
if ((type_info == (const TypeInfo *) NULL) &&
|
||
(draw_info->family != (const char *) NULL))
|
||
{
|
||
type_info=GetTypeInfoByFamily(draw_info->family,draw_info->style,
|
||
draw_info->stretch,draw_info->weight,exception);
|
||
if (type_info == (const TypeInfo *) NULL)
|
||
(void) ThrowMagickException(exception,GetMagickModule(),TypeWarning,
|
||
"UnableToReadFont","`%s'",draw_info->family);
|
||
}
|
||
if (type_info == (const TypeInfo *) NULL)
|
||
type_info=GetTypeInfoByFamily("Arial",draw_info->style,
|
||
draw_info->stretch,draw_info->weight,exception);
|
||
if (type_info == (const TypeInfo *) NULL)
|
||
type_info=GetTypeInfoByFamily("Helvetica",draw_info->style,
|
||
draw_info->stretch,draw_info->weight,exception);
|
||
if (type_info == (const TypeInfo *) NULL)
|
||
type_info=GetTypeInfoByFamily("Century Schoolbook",draw_info->style,
|
||
draw_info->stretch,draw_info->weight,exception);
|
||
if (type_info == (const TypeInfo *) NULL)
|
||
type_info=GetTypeInfoByFamily("Sans",draw_info->style,
|
||
draw_info->stretch,draw_info->weight,exception);
|
||
if (type_info == (const TypeInfo *) NULL)
|
||
type_info=GetTypeInfoByFamily((const char *) NULL,draw_info->style,
|
||
draw_info->stretch,draw_info->weight,exception);
|
||
if (type_info == (const TypeInfo *) NULL)
|
||
type_info=GetTypeInfo("*",exception);
|
||
if (type_info == (const TypeInfo *) NULL)
|
||
{
|
||
status=RenderFreetype(image,draw_info,draw_info->encoding,offset,metrics,
|
||
exception);
|
||
return(status);
|
||
}
|
||
annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
|
||
annotate_info->face=type_info->face;
|
||
if (type_info->metrics != (char *) NULL)
|
||
(void) CloneString(&annotate_info->metrics,type_info->metrics);
|
||
if (type_info->glyphs != (char *) NULL)
|
||
(void) CloneString(&annotate_info->font,type_info->glyphs);
|
||
status=RenderFreetype(image,annotate_info,type_info->encoding,offset,metrics,
|
||
exception);
|
||
annotate_info=DestroyDrawInfo(annotate_info);
|
||
return(status);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
+ R e n d e r F r e e t y p e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% RenderFreetype() renders text on the image with a Truetype font. It also
|
||
% returns the bounding box of the text relative to the image.
|
||
%
|
||
% The format of the RenderFreetype method is:
|
||
%
|
||
% MagickBooleanType RenderFreetype(Image *image,DrawInfo *draw_info,
|
||
% const char *encoding,const PointInfo *offset,TypeMetric *metrics,
|
||
% ExceptionInfo *exception)
|
||
%
|
||
% A description of each parameter follows:
|
||
%
|
||
% o image: the image.
|
||
%
|
||
% o draw_info: the draw info.
|
||
%
|
||
% o encoding: the font encoding.
|
||
%
|
||
% o offset: (x,y) location of text relative to image.
|
||
%
|
||
% o metrics: bounding box of text.
|
||
%
|
||
% o exception: return any errors or warnings in this structure.
|
||
%
|
||
*/
|
||
|
||
#if defined(MAGICKCORE_FREETYPE_DELEGATE)
|
||
|
||
static size_t ComplexTextLayout(const Image *image,const DrawInfo *draw_info,
|
||
const char *text,const size_t length,const FT_Face face,const FT_Int32 flags,
|
||
GraphemeInfo **grapheme,ExceptionInfo *exception)
|
||
{
|
||
#if defined(MAGICKCORE_RAQM_DELEGATE)
|
||
const char
|
||
*features;
|
||
|
||
raqm_t
|
||
*rq;
|
||
|
||
raqm_glyph_t
|
||
*glyphs;
|
||
|
||
register size_t
|
||
i;
|
||
|
||
size_t
|
||
extent;
|
||
|
||
extent=0;
|
||
rq=raqm_create();
|
||
if (rq == (raqm_t *) NULL)
|
||
goto cleanup;
|
||
if (raqm_set_text_utf8(rq,text,length) == 0)
|
||
goto cleanup;
|
||
if (raqm_set_par_direction(rq,(raqm_direction_t) draw_info->direction) == 0)
|
||
goto cleanup;
|
||
if (raqm_set_freetype_face(rq,face) == 0)
|
||
goto cleanup;
|
||
features=GetImageProperty(image,"type:features",exception);
|
||
if (features != (const char *) NULL)
|
||
{
|
||
char
|
||
breaker,
|
||
quote,
|
||
*token;
|
||
|
||
int
|
||
next,
|
||
status_token;
|
||
|
||
TokenInfo
|
||
*token_info;
|
||
|
||
next=0;
|
||
token_info=AcquireTokenInfo();
|
||
token=AcquireString("");
|
||
status_token=Tokenizer(token_info,0,token,50,features,"",",","",'\0',
|
||
&breaker,&next,"e);
|
||
while (status_token == 0)
|
||
{
|
||
raqm_add_font_feature(rq,token,strlen(token));
|
||
status_token=Tokenizer(token_info,0,token,50,features,"",",","",'\0',
|
||
&breaker,&next,"e);
|
||
}
|
||
token_info=DestroyTokenInfo(token_info);
|
||
token=DestroyString(token);
|
||
}
|
||
if (raqm_layout(rq) == 0)
|
||
goto cleanup;
|
||
glyphs=raqm_get_glyphs(rq,&extent);
|
||
if (glyphs == (raqm_glyph_t *) NULL)
|
||
{
|
||
extent=0;
|
||
goto cleanup;
|
||
}
|
||
*grapheme=(GraphemeInfo *) AcquireQuantumMemory(extent,sizeof(**grapheme));
|
||
if (*grapheme == (GraphemeInfo *) NULL)
|
||
{
|
||
extent=0;
|
||
goto cleanup;
|
||
}
|
||
for (i=0; i < (ssize_t) extent; i++)
|
||
{
|
||
(*grapheme)[i].index=glyphs[i].index;
|
||
(*grapheme)[i].x_offset=glyphs[i].x_offset;
|
||
(*grapheme)[i].x_advance=glyphs[i].x_advance;
|
||
(*grapheme)[i].y_offset=glyphs[i].y_offset;
|
||
(*grapheme)[i].cluster=glyphs[i].cluster;
|
||
}
|
||
|
||
cleanup:
|
||
raqm_destroy(rq);
|
||
return(extent);
|
||
#else
|
||
const char
|
||
*p;
|
||
|
||
FT_Error
|
||
ft_status;
|
||
|
||
register ssize_t
|
||
i;
|
||
|
||
ssize_t
|
||
last_glyph;
|
||
|
||
magick_unreferenced(exception);
|
||
|
||
/*
|
||
Simple layout for bi-directional text (right-to-left or left-to-right).
|
||
*/
|
||
*grapheme=(GraphemeInfo *) AcquireQuantumMemory(length+1,sizeof(**grapheme));
|
||
if (*grapheme == (GraphemeInfo *) NULL)
|
||
return(0);
|
||
last_glyph=0;
|
||
p=text;
|
||
for (i=0; GetUTFCode(p) != 0; p+=GetUTFOctets(p), i++)
|
||
{
|
||
(*grapheme)[i].index=(ssize_t) FT_Get_Char_Index(face,GetUTFCode(p));
|
||
(*grapheme)[i].x_offset=0;
|
||
(*grapheme)[i].y_offset=0;
|
||
if (((*grapheme)[i].index != 0) && (last_glyph != 0))
|
||
{
|
||
if (FT_HAS_KERNING(face))
|
||
{
|
||
FT_Vector
|
||
kerning;
|
||
|
||
ft_status=FT_Get_Kerning(face,(FT_UInt) last_glyph,(FT_UInt)
|
||
(*grapheme)[i].index,ft_kerning_default,&kerning);
|
||
if (ft_status == 0)
|
||
(*grapheme)[i-1].x_advance+=(FT_Pos) ((draw_info->direction ==
|
||
RightToLeftDirection ? -1.0 : 1.0)*kerning.x);
|
||
}
|
||
}
|
||
ft_status=FT_Load_Glyph(face,(FT_UInt) (*grapheme)[i].index,flags);
|
||
(*grapheme)[i].x_advance=face->glyph->advance.x;
|
||
(*grapheme)[i].cluster=p-text;
|
||
last_glyph=(*grapheme)[i].index;
|
||
}
|
||
return((size_t) i);
|
||
#endif
|
||
}
|
||
|
||
static int TraceCubicBezier(FT_Vector *p,FT_Vector *q,FT_Vector *to,
|
||
DrawInfo *draw_info)
|
||
{
|
||
AffineMatrix
|
||
affine;
|
||
|
||
char
|
||
path[MagickPathExtent];
|
||
|
||
affine=draw_info->affine;
|
||
(void) FormatLocaleString(path,MagickPathExtent,"C%g,%g %g,%g %g,%g",
|
||
affine.tx+p->x/64.0,affine.ty-p->y/64.0,affine.tx+q->x/64.0,affine.ty-
|
||
q->y/64.0,affine.tx+to->x/64.0,affine.ty-to->y/64.0);
|
||
(void) ConcatenateString(&draw_info->primitive,path);
|
||
return(0);
|
||
}
|
||
|
||
static int TraceLineTo(FT_Vector *to,DrawInfo *draw_info)
|
||
{
|
||
AffineMatrix
|
||
affine;
|
||
|
||
char
|
||
path[MagickPathExtent];
|
||
|
||
affine=draw_info->affine;
|
||
(void) FormatLocaleString(path,MagickPathExtent,"L%g,%g",affine.tx+to->x/64.0,
|
||
affine.ty-to->y/64.0);
|
||
(void) ConcatenateString(&draw_info->primitive,path);
|
||
return(0);
|
||
}
|
||
|
||
static int TraceMoveTo(FT_Vector *to,DrawInfo *draw_info)
|
||
{
|
||
AffineMatrix
|
||
affine;
|
||
|
||
char
|
||
path[MagickPathExtent];
|
||
|
||
affine=draw_info->affine;
|
||
(void) FormatLocaleString(path,MagickPathExtent,"M%g,%g",affine.tx+to->x/64.0,
|
||
affine.ty-to->y/64.0);
|
||
(void) ConcatenateString(&draw_info->primitive,path);
|
||
return(0);
|
||
}
|
||
|
||
static int TraceQuadraticBezier(FT_Vector *control,FT_Vector *to,
|
||
DrawInfo *draw_info)
|
||
{
|
||
AffineMatrix
|
||
affine;
|
||
|
||
char
|
||
path[MagickPathExtent];
|
||
|
||
affine=draw_info->affine;
|
||
(void) FormatLocaleString(path,MagickPathExtent,"Q%g,%g %g,%g",affine.tx+
|
||
control->x/64.0,affine.ty-control->y/64.0,affine.tx+to->x/64.0,affine.ty-
|
||
to->y/64.0);
|
||
(void) ConcatenateString(&draw_info->primitive,path);
|
||
return(0);
|
||
}
|
||
|
||
static MagickBooleanType RenderFreetype(Image *image,const DrawInfo *draw_info,
|
||
const char *encoding,const PointInfo *offset,TypeMetric *metrics,
|
||
ExceptionInfo *exception)
|
||
{
|
||
#if !defined(FT_OPEN_PATHNAME)
|
||
#define FT_OPEN_PATHNAME ft_open_pathname
|
||
#endif
|
||
|
||
typedef struct _GlyphInfo
|
||
{
|
||
FT_UInt
|
||
id;
|
||
|
||
FT_Vector
|
||
origin;
|
||
|
||
FT_Glyph
|
||
image;
|
||
} GlyphInfo;
|
||
|
||
const char
|
||
*value;
|
||
|
||
DrawInfo
|
||
*annotate_info;
|
||
|
||
FT_BBox
|
||
bounds;
|
||
|
||
FT_BitmapGlyph
|
||
bitmap;
|
||
|
||
FT_Encoding
|
||
encoding_type;
|
||
|
||
FT_Error
|
||
ft_status;
|
||
|
||
FT_Face
|
||
face;
|
||
|
||
FT_Int32
|
||
flags;
|
||
|
||
FT_Library
|
||
library;
|
||
|
||
FT_Matrix
|
||
affine;
|
||
|
||
FT_Open_Args
|
||
args;
|
||
|
||
FT_Vector
|
||
origin;
|
||
|
||
GlyphInfo
|
||
glyph,
|
||
last_glyph;
|
||
|
||
GraphemeInfo
|
||
*grapheme;
|
||
|
||
MagickBooleanType
|
||
status;
|
||
|
||
PointInfo
|
||
point,
|
||
resolution;
|
||
|
||
register char
|
||
*p;
|
||
|
||
register ssize_t
|
||
i;
|
||
|
||
size_t
|
||
length;
|
||
|
||
ssize_t
|
||
code,
|
||
y;
|
||
|
||
static FT_Outline_Funcs
|
||
OutlineMethods =
|
||
{
|
||
(FT_Outline_MoveTo_Func) TraceMoveTo,
|
||
(FT_Outline_LineTo_Func) TraceLineTo,
|
||
(FT_Outline_ConicTo_Func) TraceQuadraticBezier,
|
||
(FT_Outline_CubicTo_Func) TraceCubicBezier,
|
||
0, 0
|
||
};
|
||
|
||
unsigned char
|
||
*utf8;
|
||
|
||
/*
|
||
Initialize Truetype library.
|
||
*/
|
||
ft_status=FT_Init_FreeType(&library);
|
||
if (ft_status != 0)
|
||
ThrowBinaryException(TypeError,"UnableToInitializeFreetypeLibrary",
|
||
image->filename);
|
||
args.flags=FT_OPEN_PATHNAME;
|
||
if (draw_info->font == (char *) NULL)
|
||
args.pathname=ConstantString("helvetica");
|
||
else
|
||
if (*draw_info->font != '@')
|
||
args.pathname=ConstantString(draw_info->font);
|
||
else
|
||
args.pathname=ConstantString(draw_info->font+1);
|
||
face=(FT_Face) NULL;
|
||
ft_status=FT_Open_Face(library,&args,(long) draw_info->face,&face);
|
||
args.pathname=DestroyString(args.pathname);
|
||
if (ft_status != 0)
|
||
{
|
||
(void) FT_Done_FreeType(library);
|
||
(void) ThrowMagickException(exception,GetMagickModule(),TypeError,
|
||
"UnableToReadFont","`%s'",draw_info->font);
|
||
return(RenderPostscript(image,draw_info,offset,metrics,exception));
|
||
}
|
||
if ((draw_info->metrics != (char *) NULL) &&
|
||
(IsPathAccessible(draw_info->metrics) != MagickFalse))
|
||
(void) FT_Attach_File(face,draw_info->metrics);
|
||
encoding_type=ft_encoding_unicode;
|
||
ft_status=FT_Select_Charmap(face,encoding_type);
|
||
if ((ft_status != 0) && (face->num_charmaps != 0))
|
||
ft_status=FT_Set_Charmap(face,face->charmaps[0]);
|
||
if (encoding != (const char *) NULL)
|
||
{
|
||
if (LocaleCompare(encoding,"AdobeCustom") == 0)
|
||
encoding_type=ft_encoding_adobe_custom;
|
||
if (LocaleCompare(encoding,"AdobeExpert") == 0)
|
||
encoding_type=ft_encoding_adobe_expert;
|
||
if (LocaleCompare(encoding,"AdobeStandard") == 0)
|
||
encoding_type=ft_encoding_adobe_standard;
|
||
if (LocaleCompare(encoding,"AppleRoman") == 0)
|
||
encoding_type=ft_encoding_apple_roman;
|
||
if (LocaleCompare(encoding,"BIG5") == 0)
|
||
encoding_type=ft_encoding_big5;
|
||
if (LocaleCompare(encoding,"GB2312") == 0)
|
||
encoding_type=ft_encoding_gb2312;
|
||
if (LocaleCompare(encoding,"Johab") == 0)
|
||
encoding_type=ft_encoding_johab;
|
||
#if defined(ft_encoding_latin_1)
|
||
if (LocaleCompare(encoding,"Latin-1") == 0)
|
||
encoding_type=ft_encoding_latin_1;
|
||
#endif
|
||
if (LocaleCompare(encoding,"Latin-2") == 0)
|
||
encoding_type=ft_encoding_latin_2;
|
||
if (LocaleCompare(encoding,"None") == 0)
|
||
encoding_type=ft_encoding_none;
|
||
if (LocaleCompare(encoding,"SJIScode") == 0)
|
||
encoding_type=ft_encoding_sjis;
|
||
if (LocaleCompare(encoding,"Symbol") == 0)
|
||
encoding_type=ft_encoding_symbol;
|
||
if (LocaleCompare(encoding,"Unicode") == 0)
|
||
encoding_type=ft_encoding_unicode;
|
||
if (LocaleCompare(encoding,"Wansung") == 0)
|
||
encoding_type=ft_encoding_wansung;
|
||
ft_status=FT_Select_Charmap(face,encoding_type);
|
||
if (ft_status != 0)
|
||
{
|
||
(void) FT_Done_Face(face);
|
||
(void) FT_Done_FreeType(library);
|
||
ThrowBinaryException(TypeError,"UnrecognizedFontEncoding",encoding);
|
||
}
|
||
}
|
||
/*
|
||
Set text size.
|
||
*/
|
||
resolution.x=DefaultResolution;
|
||
resolution.y=DefaultResolution;
|
||
if (draw_info->density != (char *) NULL)
|
||
{
|
||
GeometryInfo
|
||
geometry_info;
|
||
|
||
MagickStatusType
|
||
flags;
|
||
|
||
flags=ParseGeometry(draw_info->density,&geometry_info);
|
||
resolution.x=geometry_info.rho;
|
||
resolution.y=geometry_info.sigma;
|
||
if ((flags & SigmaValue) == 0)
|
||
resolution.y=resolution.x;
|
||
}
|
||
ft_status=FT_Set_Char_Size(face,(FT_F26Dot6) (64.0*draw_info->pointsize),
|
||
(FT_F26Dot6) (64.0*draw_info->pointsize),(FT_UInt) resolution.x,
|
||
(FT_UInt) resolution.y);
|
||
if (ft_status != 0)
|
||
{
|
||
(void) FT_Done_Face(face);
|
||
(void) FT_Done_FreeType(library);
|
||
ThrowBinaryException(TypeError,"UnableToReadFont",draw_info->font);
|
||
}
|
||
metrics->pixels_per_em.x=face->size->metrics.x_ppem;
|
||
metrics->pixels_per_em.y=face->size->metrics.y_ppem;
|
||
metrics->ascent=(double) face->size->metrics.ascender/64.0;
|
||
metrics->descent=(double) face->size->metrics.descender/64.0;
|
||
metrics->width=0;
|
||
metrics->origin.x=0;
|
||
metrics->origin.y=0;
|
||
metrics->height=(double) face->size->metrics.height/64.0;
|
||
metrics->max_advance=0.0;
|
||
if (face->size->metrics.max_advance > MagickEpsilon)
|
||
metrics->max_advance=(double) face->size->metrics.max_advance/64.0;
|
||
metrics->bounds.x1=0.0;
|
||
metrics->bounds.y1=metrics->descent;
|
||
metrics->bounds.x2=metrics->ascent+metrics->descent;
|
||
metrics->bounds.y2=metrics->ascent+metrics->descent;
|
||
metrics->underline_position=face->underline_position/64.0;
|
||
metrics->underline_thickness=face->underline_thickness/64.0;
|
||
if ((draw_info->text == (char *) NULL) || (*draw_info->text == '\0'))
|
||
{
|
||
(void) FT_Done_Face(face);
|
||
(void) FT_Done_FreeType(library);
|
||
return(MagickTrue);
|
||
}
|
||
/*
|
||
Compute bounding box.
|
||
*/
|
||
if (image->debug != MagickFalse)
|
||
(void) LogMagickEvent(AnnotateEvent,GetMagickModule(),"Font %s; "
|
||
"font-encoding %s; text-encoding %s; pointsize %g",
|
||
draw_info->font != (char *) NULL ? draw_info->font : "none",
|
||
encoding != (char *) NULL ? encoding : "none",
|
||
draw_info->encoding != (char *) NULL ? draw_info->encoding : "none",
|
||
draw_info->pointsize);
|
||
flags=FT_LOAD_NO_BITMAP;
|
||
if (draw_info->text_antialias == MagickFalse)
|
||
flags|=FT_LOAD_TARGET_MONO;
|
||
else
|
||
{
|
||
#if defined(FT_LOAD_TARGET_LIGHT)
|
||
flags|=FT_LOAD_TARGET_LIGHT;
|
||
#elif defined(FT_LOAD_TARGET_LCD)
|
||
flags|=FT_LOAD_TARGET_LCD;
|
||
#endif
|
||
}
|
||
value=GetImageProperty(image,"type:hinting",exception);
|
||
if ((value != (const char *) NULL) && (LocaleCompare(value,"off") == 0))
|
||
flags|=FT_LOAD_NO_HINTING;
|
||
glyph.id=0;
|
||
glyph.image=NULL;
|
||
last_glyph.id=0;
|
||
last_glyph.image=NULL;
|
||
origin.x=0;
|
||
origin.y=0;
|
||
affine.xx=65536L;
|
||
affine.yx=0L;
|
||
affine.xy=0L;
|
||
affine.yy=65536L;
|
||
if (draw_info->render != MagickFalse)
|
||
{
|
||
affine.xx=(FT_Fixed) (65536L*draw_info->affine.sx+0.5);
|
||
affine.yx=(FT_Fixed) (-65536L*draw_info->affine.rx+0.5);
|
||
affine.xy=(FT_Fixed) (-65536L*draw_info->affine.ry+0.5);
|
||
affine.yy=(FT_Fixed) (65536L*draw_info->affine.sy+0.5);
|
||
}
|
||
annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
|
||
if (annotate_info->dash_pattern != (double *) NULL)
|
||
annotate_info->dash_pattern[0]=0.0;
|
||
(void) CloneString(&annotate_info->primitive,"path '");
|
||
status=MagickTrue;
|
||
if (draw_info->render != MagickFalse)
|
||
{
|
||
if (image->storage_class != DirectClass)
|
||
(void) SetImageStorageClass(image,DirectClass,exception);
|
||
if (image->alpha_trait == UndefinedPixelTrait)
|
||
(void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
|
||
}
|
||
point.x=0.0;
|
||
point.y=0.0;
|
||
for (p=draw_info->text; GetUTFCode(p) != 0; p+=GetUTFOctets(p))
|
||
if (GetUTFCode(p) < 0)
|
||
break;
|
||
utf8=(unsigned char *) NULL;
|
||
if (GetUTFCode(p) == 0)
|
||
p=draw_info->text;
|
||
else
|
||
{
|
||
utf8=ConvertLatin1ToUTF8((unsigned char *) draw_info->text);
|
||
if (utf8 != (unsigned char *) NULL)
|
||
p=(char *) utf8;
|
||
}
|
||
grapheme=(GraphemeInfo *) NULL;
|
||
length=ComplexTextLayout(image,draw_info,p,strlen(p),face,flags,&grapheme,
|
||
exception);
|
||
code=0;
|
||
for (i=0; i < (ssize_t) length; i++)
|
||
{
|
||
/*
|
||
Render UTF-8 sequence.
|
||
*/
|
||
glyph.id=(FT_UInt) grapheme[i].index;
|
||
if (glyph.id == 0)
|
||
glyph.id=FT_Get_Char_Index(face,'?');
|
||
if ((glyph.id != 0) && (last_glyph.id != 0))
|
||
origin.x+=(FT_Pos) (64.0*draw_info->kerning);
|
||
glyph.origin=origin;
|
||
glyph.origin.x+=(FT_Pos) grapheme[i].x_offset;
|
||
glyph.origin.y+=(FT_Pos) grapheme[i].y_offset;
|
||
ft_status=FT_Load_Glyph(face,glyph.id,flags);
|
||
if (ft_status != 0)
|
||
continue;
|
||
ft_status=FT_Get_Glyph(face->glyph,&glyph.image);
|
||
if (ft_status != 0)
|
||
continue;
|
||
ft_status=FT_Outline_Get_BBox(&((FT_OutlineGlyph) glyph.image)->outline,
|
||
&bounds);
|
||
if (ft_status != 0)
|
||
continue;
|
||
if ((p == draw_info->text) || (bounds.xMin < metrics->bounds.x1))
|
||
if (bounds.xMin != 0)
|
||
metrics->bounds.x1=(double) bounds.xMin;
|
||
if ((p == draw_info->text) || (bounds.yMin < metrics->bounds.y1))
|
||
if (bounds.yMin != 0)
|
||
metrics->bounds.y1=(double) bounds.yMin;
|
||
if ((p == draw_info->text) || (bounds.xMax > metrics->bounds.x2))
|
||
if (bounds.xMax != 0)
|
||
metrics->bounds.x2=(double) bounds.xMax;
|
||
if ((p == draw_info->text) || (bounds.yMax > metrics->bounds.y2))
|
||
if (bounds.yMax != 0)
|
||
metrics->bounds.y2=(double) bounds.yMax;
|
||
if (((draw_info->stroke.alpha != TransparentAlpha) ||
|
||
(draw_info->stroke_pattern != (Image *) NULL)) &&
|
||
((status != MagickFalse) && (draw_info->render != MagickFalse)))
|
||
{
|
||
/*
|
||
Trace the glyph.
|
||
*/
|
||
annotate_info->affine.tx=glyph.origin.x/64.0;
|
||
annotate_info->affine.ty=(-glyph.origin.y/64.0);
|
||
(void) FT_Outline_Decompose(&((FT_OutlineGlyph) glyph.image)->outline,
|
||
&OutlineMethods,annotate_info);
|
||
}
|
||
FT_Vector_Transform(&glyph.origin,&affine);
|
||
(void) FT_Glyph_Transform(glyph.image,&affine,&glyph.origin);
|
||
ft_status=FT_Glyph_To_Bitmap(&glyph.image,ft_render_mode_normal,
|
||
(FT_Vector *) NULL,MagickTrue);
|
||
if (ft_status != 0)
|
||
continue;
|
||
bitmap=(FT_BitmapGlyph) glyph.image;
|
||
point.x=offset->x+bitmap->left;
|
||
if (bitmap->bitmap.pixel_mode == ft_pixel_mode_mono)
|
||
point.x=offset->x+(origin.x >> 6);
|
||
point.y=offset->y-bitmap->top;
|
||
if (draw_info->render != MagickFalse)
|
||
{
|
||
CacheView
|
||
*image_view;
|
||
|
||
register unsigned char
|
||
*r;
|
||
|
||
/*
|
||
Rasterize the glyph.
|
||
*/
|
||
image_view=AcquireAuthenticCacheView(image,exception);
|
||
r=bitmap->bitmap.buffer;
|
||
for (y=0; y < (ssize_t) bitmap->bitmap.rows; y++)
|
||
{
|
||
double
|
||
fill_opacity;
|
||
|
||
MagickBooleanType
|
||
active,
|
||
sync;
|
||
|
||
PixelInfo
|
||
fill_color;
|
||
|
||
register Quantum
|
||
*magick_restrict q;
|
||
|
||
register ssize_t
|
||
x;
|
||
|
||
ssize_t
|
||
n,
|
||
x_offset,
|
||
y_offset;
|
||
|
||
if (status == MagickFalse)
|
||
continue;
|
||
x_offset=(ssize_t) ceil(point.x-0.5);
|
||
y_offset=(ssize_t) ceil(point.y+y-0.5);
|
||
if ((y_offset < 0) || (y_offset >= (ssize_t) image->rows))
|
||
continue;
|
||
q=(Quantum *) NULL;
|
||
if ((x_offset < 0) || (x_offset >= (ssize_t) image->columns))
|
||
active=MagickFalse;
|
||
else
|
||
{
|
||
q=GetCacheViewAuthenticPixels(image_view,x_offset,y_offset,
|
||
bitmap->bitmap.width,1,exception);
|
||
active=q != (Quantum *) NULL ? MagickTrue : MagickFalse;
|
||
}
|
||
n=y*bitmap->bitmap.pitch-1;
|
||
for (x=0; x < (ssize_t) bitmap->bitmap.width; x++)
|
||
{
|
||
n++;
|
||
x_offset++;
|
||
if ((x_offset < 0) || (x_offset >= (ssize_t) image->columns))
|
||
{
|
||
if (q != (Quantum *) NULL)
|
||
q+=GetPixelChannels(image);
|
||
continue;
|
||
}
|
||
if (bitmap->bitmap.pixel_mode != ft_pixel_mode_mono)
|
||
fill_opacity=(double) (r[n])/(bitmap->bitmap.num_grays-1);
|
||
else
|
||
fill_opacity=((r[(x >> 3)+y*bitmap->bitmap.pitch] &
|
||
(1 << (~x & 0x07)))) == 0 ? 0.0 : 1.0;
|
||
if (draw_info->text_antialias == MagickFalse)
|
||
fill_opacity=fill_opacity >= 0.5 ? 1.0 : 0.0;
|
||
if (active == MagickFalse)
|
||
q=GetCacheViewAuthenticPixels(image_view,x_offset,y_offset,1,1,
|
||
exception);
|
||
if (q == (Quantum *) NULL)
|
||
continue;
|
||
GetPixelInfo(image,&fill_color);
|
||
GetFillColor(draw_info,x_offset,y_offset,&fill_color,exception);
|
||
fill_opacity=fill_opacity*fill_color.alpha;
|
||
CompositePixelOver(image,&fill_color,fill_opacity,q,
|
||
GetPixelAlpha(image,q),q);
|
||
if (active == MagickFalse)
|
||
{
|
||
sync=SyncCacheViewAuthenticPixels(image_view,exception);
|
||
if (sync == MagickFalse)
|
||
status=MagickFalse;
|
||
}
|
||
q+=GetPixelChannels(image);
|
||
}
|
||
sync=SyncCacheViewAuthenticPixels(image_view,exception);
|
||
if (sync == MagickFalse)
|
||
status=MagickFalse;
|
||
}
|
||
image_view=DestroyCacheView(image_view);
|
||
if (((draw_info->stroke.alpha != TransparentAlpha) ||
|
||
(draw_info->stroke_pattern != (Image *) NULL)) &&
|
||
(status != MagickFalse))
|
||
{
|
||
/*
|
||
Draw text stroke.
|
||
*/
|
||
annotate_info->linejoin=RoundJoin;
|
||
annotate_info->affine.tx=offset->x;
|
||
annotate_info->affine.ty=offset->y;
|
||
(void) ConcatenateString(&annotate_info->primitive,"'");
|
||
(void) DrawImage(image,annotate_info,exception);
|
||
(void) CloneString(&annotate_info->primitive,"path '");
|
||
}
|
||
}
|
||
if ((bitmap->left+bitmap->bitmap.width) > metrics->width)
|
||
metrics->width=bitmap->left+bitmap->bitmap.width;
|
||
if ((fabs(draw_info->interword_spacing) >= MagickEpsilon) &&
|
||
(IsUTFSpace(GetUTFCode(p+grapheme[i].cluster)) != MagickFalse) &&
|
||
(IsUTFSpace(code) == MagickFalse))
|
||
origin.x+=(FT_Pos) (64.0*draw_info->interword_spacing);
|
||
else
|
||
origin.x+=(FT_Pos) grapheme[i].x_advance;
|
||
metrics->origin.x=(double) origin.x;
|
||
metrics->origin.y=(double) origin.y;
|
||
if (last_glyph.id != 0)
|
||
FT_Done_Glyph(last_glyph.image);
|
||
last_glyph=glyph;
|
||
code=GetUTFCode(p+grapheme[i].cluster);
|
||
}
|
||
if (grapheme != (GraphemeInfo *) NULL)
|
||
grapheme=(GraphemeInfo *) RelinquishMagickMemory(grapheme);
|
||
if (utf8 != (unsigned char *) NULL)
|
||
utf8=(unsigned char *) RelinquishMagickMemory(utf8);
|
||
if (last_glyph.id != 0)
|
||
FT_Done_Glyph(last_glyph.image);
|
||
/*
|
||
Determine font metrics.
|
||
*/
|
||
glyph.id=FT_Get_Char_Index(face,'_');
|
||
glyph.origin=origin;
|
||
ft_status=FT_Load_Glyph(face,glyph.id,flags);
|
||
if (ft_status == 0)
|
||
{
|
||
ft_status=FT_Get_Glyph(face->glyph,&glyph.image);
|
||
if (ft_status == 0)
|
||
{
|
||
ft_status=FT_Outline_Get_BBox(&((FT_OutlineGlyph) glyph.image)->
|
||
outline,&bounds);
|
||
if (ft_status == 0)
|
||
{
|
||
FT_Vector_Transform(&glyph.origin,&affine);
|
||
(void) FT_Glyph_Transform(glyph.image,&affine,&glyph.origin);
|
||
ft_status=FT_Glyph_To_Bitmap(&glyph.image,ft_render_mode_normal,
|
||
(FT_Vector *) NULL,MagickTrue);
|
||
bitmap=(FT_BitmapGlyph) glyph.image;
|
||
if (bitmap->left > metrics->width)
|
||
metrics->width=bitmap->left;
|
||
}
|
||
}
|
||
FT_Done_Glyph(glyph.image);
|
||
}
|
||
metrics->bounds.x1/=64.0;
|
||
metrics->bounds.y1/=64.0;
|
||
metrics->bounds.x2/=64.0;
|
||
metrics->bounds.y2/=64.0;
|
||
metrics->origin.x/=64.0;
|
||
metrics->origin.y/=64.0;
|
||
/*
|
||
Relinquish resources.
|
||
*/
|
||
annotate_info=DestroyDrawInfo(annotate_info);
|
||
(void) FT_Done_Face(face);
|
||
(void) FT_Done_FreeType(library);
|
||
return(status);
|
||
}
|
||
#else
|
||
static MagickBooleanType RenderFreetype(Image *image,const DrawInfo *draw_info,
|
||
const char *magick_unused(encoding),const PointInfo *offset,
|
||
TypeMetric *metrics,ExceptionInfo *exception)
|
||
{
|
||
(void) ThrowMagickException(exception,GetMagickModule(),
|
||
MissingDelegateWarning,"DelegateLibrarySupportNotBuiltIn","'%s' (Freetype)",
|
||
draw_info->font != (char *) NULL ? draw_info->font : "none");
|
||
return(RenderPostscript(image,draw_info,offset,metrics,exception));
|
||
}
|
||
#endif
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
+ R e n d e r P o s t s c r i p t %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% RenderPostscript() renders text on the image with a Postscript font. It
|
||
% also returns the bounding box of the text relative to the image.
|
||
%
|
||
% The format of the RenderPostscript method is:
|
||
%
|
||
% MagickBooleanType RenderPostscript(Image *image,DrawInfo *draw_info,
|
||
% const PointInfo *offset,TypeMetric *metrics,ExceptionInfo *exception)
|
||
%
|
||
% A description of each parameter follows:
|
||
%
|
||
% o image: the image.
|
||
%
|
||
% o draw_info: the draw info.
|
||
%
|
||
% o offset: (x,y) location of text relative to image.
|
||
%
|
||
% o metrics: bounding box of text.
|
||
%
|
||
% o exception: return any errors or warnings in this structure.
|
||
%
|
||
*/
|
||
|
||
static char *EscapeParenthesis(const char *source)
|
||
{
|
||
char
|
||
*destination;
|
||
|
||
register char
|
||
*q;
|
||
|
||
register const char
|
||
*p;
|
||
|
||
size_t
|
||
length;
|
||
|
||
assert(source != (const char *) NULL);
|
||
length=0;
|
||
for (p=source; *p != '\0'; p++)
|
||
{
|
||
if ((*p == '\\') || (*p == '(') || (*p == ')'))
|
||
{
|
||
if (~length < 1)
|
||
ThrowFatalException(ResourceLimitFatalError,"UnableToEscapeString");
|
||
length++;
|
||
}
|
||
length++;
|
||
}
|
||
destination=(char *) NULL;
|
||
if (~length >= (MagickPathExtent-1))
|
||
destination=(char *) AcquireQuantumMemory(length+MagickPathExtent,
|
||
sizeof(*destination));
|
||
if (destination == (char *) NULL)
|
||
ThrowFatalException(ResourceLimitFatalError,"UnableToEscapeString");
|
||
*destination='\0';
|
||
q=destination;
|
||
for (p=source; *p != '\0'; p++)
|
||
{
|
||
if ((*p == '\\') || (*p == '(') || (*p == ')'))
|
||
*q++='\\';
|
||
*q++=(*p);
|
||
}
|
||
*q='\0';
|
||
return(destination);
|
||
}
|
||
|
||
static MagickBooleanType RenderPostscript(Image *image,
|
||
const DrawInfo *draw_info,const PointInfo *offset,TypeMetric *metrics,
|
||
ExceptionInfo *exception)
|
||
{
|
||
char
|
||
filename[MagickPathExtent],
|
||
geometry[MagickPathExtent],
|
||
*text;
|
||
|
||
FILE
|
||
*file;
|
||
|
||
Image
|
||
*annotate_image;
|
||
|
||
ImageInfo
|
||
*annotate_info;
|
||
|
||
int
|
||
unique_file;
|
||
|
||
MagickBooleanType
|
||
identity;
|
||
|
||
PointInfo
|
||
extent,
|
||
point,
|
||
resolution;
|
||
|
||
register ssize_t
|
||
i;
|
||
|
||
size_t
|
||
length;
|
||
|
||
ssize_t
|
||
y;
|
||
|
||
/*
|
||
Render label with a Postscript font.
|
||
*/
|
||
if (image->debug != MagickFalse)
|
||
(void) LogMagickEvent(AnnotateEvent,GetMagickModule(),
|
||
"Font %s; pointsize %g",draw_info->font != (char *) NULL ?
|
||
draw_info->font : "none",draw_info->pointsize);
|
||
file=(FILE *) NULL;
|
||
unique_file=AcquireUniqueFileResource(filename);
|
||
if (unique_file != -1)
|
||
file=fdopen(unique_file,"wb");
|
||
if ((unique_file == -1) || (file == (FILE *) NULL))
|
||
{
|
||
ThrowFileException(exception,FileOpenError,"UnableToOpenFile",filename);
|
||
return(MagickFalse);
|
||
}
|
||
(void) FormatLocaleFile(file,"%%!PS-Adobe-3.0\n");
|
||
(void) FormatLocaleFile(file,"/ReencodeType\n");
|
||
(void) FormatLocaleFile(file,"{\n");
|
||
(void) FormatLocaleFile(file," findfont dup length\n");
|
||
(void) FormatLocaleFile(file,
|
||
" dict begin { 1 index /FID ne {def} {pop pop} ifelse } forall\n");
|
||
(void) FormatLocaleFile(file,
|
||
" /Encoding ISOLatin1Encoding def currentdict end definefont pop\n");
|
||
(void) FormatLocaleFile(file,"} bind def\n");
|
||
/*
|
||
Sample to compute bounding box.
|
||
*/
|
||
identity=(fabs(draw_info->affine.sx-draw_info->affine.sy) < MagickEpsilon) &&
|
||
(fabs(draw_info->affine.rx) < MagickEpsilon) &&
|
||
(fabs(draw_info->affine.ry) < MagickEpsilon) ? MagickTrue : MagickFalse;
|
||
extent.x=0.0;
|
||
extent.y=0.0;
|
||
length=strlen(draw_info->text);
|
||
for (i=0; i <= (ssize_t) (length+2); i++)
|
||
{
|
||
point.x=fabs(draw_info->affine.sx*i*draw_info->pointsize+
|
||
draw_info->affine.ry*2.0*draw_info->pointsize);
|
||
point.y=fabs(draw_info->affine.rx*i*draw_info->pointsize+
|
||
draw_info->affine.sy*2.0*draw_info->pointsize);
|
||
if (point.x > extent.x)
|
||
extent.x=point.x;
|
||
if (point.y > extent.y)
|
||
extent.y=point.y;
|
||
}
|
||
(void) FormatLocaleFile(file,"%g %g moveto\n",identity != MagickFalse ? 0.0 :
|
||
extent.x/2.0,extent.y/2.0);
|
||
(void) FormatLocaleFile(file,"%g %g scale\n",draw_info->pointsize,
|
||
draw_info->pointsize);
|
||
if ((draw_info->font == (char *) NULL) || (*draw_info->font == '\0') ||
|
||
(strchr(draw_info->font,'/') != (char *) NULL))
|
||
(void) FormatLocaleFile(file,
|
||
"/Times-Roman-ISO dup /Times-Roman ReencodeType findfont setfont\n");
|
||
else
|
||
(void) FormatLocaleFile(file,
|
||
"/%s-ISO dup /%s ReencodeType findfont setfont\n",draw_info->font,
|
||
draw_info->font);
|
||
(void) FormatLocaleFile(file,"[%g %g %g %g 0 0] concat\n",
|
||
draw_info->affine.sx,-draw_info->affine.rx,-draw_info->affine.ry,
|
||
draw_info->affine.sy);
|
||
text=EscapeParenthesis(draw_info->text);
|
||
if (identity == MagickFalse)
|
||
(void) FormatLocaleFile(file,"(%s) stringwidth pop -0.5 mul -0.5 rmoveto\n",
|
||
text);
|
||
(void) FormatLocaleFile(file,"(%s) show\n",text);
|
||
text=DestroyString(text);
|
||
(void) FormatLocaleFile(file,"showpage\n");
|
||
(void) fclose(file);
|
||
(void) FormatLocaleString(geometry,MagickPathExtent,"%.20gx%.20g+0+0!",
|
||
floor(extent.x+0.5),floor(extent.y+0.5));
|
||
annotate_info=AcquireImageInfo();
|
||
(void) FormatLocaleString(annotate_info->filename,MagickPathExtent,"ps:%s",
|
||
filename);
|
||
(void) CloneString(&annotate_info->page,geometry);
|
||
if (draw_info->density != (char *) NULL)
|
||
(void) CloneString(&annotate_info->density,draw_info->density);
|
||
annotate_info->antialias=draw_info->text_antialias;
|
||
annotate_image=ReadImage(annotate_info,exception);
|
||
CatchException(exception);
|
||
annotate_info=DestroyImageInfo(annotate_info);
|
||
(void) RelinquishUniqueFileResource(filename);
|
||
if (annotate_image == (Image *) NULL)
|
||
return(MagickFalse);
|
||
(void) NegateImage(annotate_image,MagickFalse,exception);
|
||
resolution.x=DefaultResolution;
|
||
resolution.y=DefaultResolution;
|
||
if (draw_info->density != (char *) NULL)
|
||
{
|
||
GeometryInfo
|
||
geometry_info;
|
||
|
||
MagickStatusType
|
||
flags;
|
||
|
||
flags=ParseGeometry(draw_info->density,&geometry_info);
|
||
resolution.x=geometry_info.rho;
|
||
resolution.y=geometry_info.sigma;
|
||
if ((flags & SigmaValue) == 0)
|
||
resolution.y=resolution.x;
|
||
}
|
||
if (identity == MagickFalse)
|
||
(void) TransformImage(&annotate_image,"0x0",(char *) NULL,exception);
|
||
else
|
||
{
|
||
RectangleInfo
|
||
crop_info;
|
||
|
||
crop_info=GetImageBoundingBox(annotate_image,exception);
|
||
crop_info.height=(size_t) ((resolution.y/DefaultResolution)*
|
||
ExpandAffine(&draw_info->affine)*draw_info->pointsize+0.5);
|
||
crop_info.y=(ssize_t) ceil((resolution.y/DefaultResolution)*extent.y/8.0-
|
||
0.5);
|
||
(void) FormatLocaleString(geometry,MagickPathExtent,
|
||
"%.20gx%.20g%+.20g%+.20g",(double) crop_info.width,(double)
|
||
crop_info.height,(double) crop_info.x,(double) crop_info.y);
|
||
(void) TransformImage(&annotate_image,geometry,(char *) NULL,exception);
|
||
}
|
||
metrics->pixels_per_em.x=(resolution.y/DefaultResolution)*
|
||
ExpandAffine(&draw_info->affine)*draw_info->pointsize;
|
||
metrics->pixels_per_em.y=metrics->pixels_per_em.x;
|
||
metrics->ascent=metrics->pixels_per_em.x;
|
||
metrics->descent=metrics->pixels_per_em.y/-5.0;
|
||
metrics->width=(double) annotate_image->columns/
|
||
ExpandAffine(&draw_info->affine);
|
||
metrics->height=1.152*metrics->pixels_per_em.x;
|
||
metrics->max_advance=metrics->pixels_per_em.x;
|
||
metrics->bounds.x1=0.0;
|
||
metrics->bounds.y1=metrics->descent;
|
||
metrics->bounds.x2=metrics->ascent+metrics->descent;
|
||
metrics->bounds.y2=metrics->ascent+metrics->descent;
|
||
metrics->underline_position=(-2.0);
|
||
metrics->underline_thickness=1.0;
|
||
if (draw_info->render == MagickFalse)
|
||
{
|
||
annotate_image=DestroyImage(annotate_image);
|
||
return(MagickTrue);
|
||
}
|
||
if (draw_info->fill.alpha != TransparentAlpha)
|
||
{
|
||
CacheView
|
||
*annotate_view;
|
||
|
||
MagickBooleanType
|
||
sync;
|
||
|
||
PixelInfo
|
||
fill_color;
|
||
|
||
/*
|
||
Render fill color.
|
||
*/
|
||
if (image->alpha_trait == UndefinedPixelTrait)
|
||
(void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
|
||
if (annotate_image->alpha_trait == UndefinedPixelTrait)
|
||
(void) SetImageAlphaChannel(annotate_image,OpaqueAlphaChannel,
|
||
exception);
|
||
fill_color=draw_info->fill;
|
||
annotate_view=AcquireAuthenticCacheView(annotate_image,exception);
|
||
for (y=0; y < (ssize_t) annotate_image->rows; y++)
|
||
{
|
||
register ssize_t
|
||
x;
|
||
|
||
register Quantum
|
||
*magick_restrict q;
|
||
|
||
q=GetCacheViewAuthenticPixels(annotate_view,0,y,annotate_image->columns,
|
||
1,exception);
|
||
if (q == (Quantum *) NULL)
|
||
break;
|
||
for (x=0; x < (ssize_t) annotate_image->columns; x++)
|
||
{
|
||
GetFillColor(draw_info,x,y,&fill_color,exception);
|
||
SetPixelAlpha(annotate_image,ClampToQuantum((((double) QuantumScale*
|
||
GetPixelIntensity(annotate_image,q)*fill_color.alpha))),q);
|
||
SetPixelRed(annotate_image,fill_color.red,q);
|
||
SetPixelGreen(annotate_image,fill_color.green,q);
|
||
SetPixelBlue(annotate_image,fill_color.blue,q);
|
||
q+=GetPixelChannels(annotate_image);
|
||
}
|
||
sync=SyncCacheViewAuthenticPixels(annotate_view,exception);
|
||
if (sync == MagickFalse)
|
||
break;
|
||
}
|
||
annotate_view=DestroyCacheView(annotate_view);
|
||
(void) CompositeImage(image,annotate_image,OverCompositeOp,MagickTrue,
|
||
(ssize_t) ceil(offset->x-0.5),(ssize_t) ceil(offset->y-(metrics->ascent+
|
||
metrics->descent)-0.5),exception);
|
||
}
|
||
annotate_image=DestroyImage(annotate_image);
|
||
return(MagickTrue);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
+ R e n d e r X 1 1 %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% RenderX11() renders text on the image with an X11 font. It also returns the
|
||
% bounding box of the text relative to the image.
|
||
%
|
||
% The format of the RenderX11 method is:
|
||
%
|
||
% MagickBooleanType RenderX11(Image *image,DrawInfo *draw_info,
|
||
% const PointInfo *offset,TypeMetric *metrics,ExceptionInfo *exception)
|
||
%
|
||
% A description of each parameter follows:
|
||
%
|
||
% o image: the image.
|
||
%
|
||
% o draw_info: the draw info.
|
||
%
|
||
% o offset: (x,y) location of text relative to image.
|
||
%
|
||
% o metrics: bounding box of text.
|
||
%
|
||
% o exception: return any errors or warnings in this structure.
|
||
%
|
||
*/
|
||
static MagickBooleanType RenderX11(Image *image,const DrawInfo *draw_info,
|
||
const PointInfo *offset,TypeMetric *metrics,ExceptionInfo *exception)
|
||
{
|
||
MagickBooleanType
|
||
status;
|
||
|
||
if (annotate_semaphore == (SemaphoreInfo *) NULL)
|
||
ActivateSemaphoreInfo(&annotate_semaphore);
|
||
LockSemaphoreInfo(annotate_semaphore);
|
||
status=XRenderImage(image,draw_info,offset,metrics,exception);
|
||
UnlockSemaphoreInfo(annotate_semaphore);
|
||
return(status);
|
||
}
|