forked from openkylin/imagemagick
2206 lines
71 KiB
C
2206 lines
71 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 1999-2021 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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% 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 "magick/studio.h"
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#include "magick/annotate.h"
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#include "magick/attribute.h"
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#include "magick/cache-private.h"
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#include "magick/cache-view.h"
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#include "magick/channel.h"
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#include "magick/client.h"
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#include "magick/color.h"
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#include "magick/color-private.h"
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#include "magick/colorspace-private.h"
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#include "magick/composite.h"
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#include "magick/composite-private.h"
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#include "magick/constitute.h"
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#include "magick/draw.h"
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#include "magick/draw-private.h"
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#include "magick/exception.h"
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#include "magick/exception-private.h"
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#include "magick/gem.h"
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#include "magick/geometry.h"
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#include "magick/image-private.h"
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#include "magick/log.h"
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#include "magick/quantum.h"
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#include "magick/quantum-private.h"
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#include "magick/pixel-accessor.h"
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#include "magick/policy.h"
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#include "magick/property.h"
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#include "magick/resource_.h"
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#include "magick/semaphore.h"
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#include "magick/statistic.h"
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#include "magick/string_.h"
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#include "magick/token.h"
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#include "magick/token-private.h"
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#include "magick/transform.h"
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#include "magick/type.h"
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#include "magick/utility.h"
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#include "magick/xwindow-private.h"
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#if defined(MAGICKCORE_FREETYPE_DELEGATE)
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#if defined(__MINGW32__)
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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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ssize_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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RenderPostscript(Image *,const DrawInfo *,const PointInfo *,TypeMetric *),
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RenderFreetype(Image *,const DrawInfo *,const char *,const PointInfo *,
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TypeMetric *),
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RenderX11(Image *,const DrawInfo *,const PointInfo *,TypeMetric *);
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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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MagickExport MagickBooleanType AnnotateComponentGenesis(void)
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{
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if (annotate_semaphore == (SemaphoreInfo *) NULL)
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annotate_semaphore=AllocateSemaphoreInfo();
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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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MagickExport 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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DestroySemaphoreInfo(&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.
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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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%
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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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*/
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MagickExport MagickBooleanType AnnotateImage(Image *image,
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const DrawInfo *draw_info)
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{
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char
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*p,
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color[MaxTextExtent],
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primitive[MaxTextExtent],
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*text,
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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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PixelPacket
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pixel;
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PointInfo
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offset;
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RectangleInfo
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geometry;
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ssize_t
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i;
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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);
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if (*draw_info->text == '\0')
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return(MagickTrue);
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annotate=CloneDrawInfo((ImageInfo *) NULL,draw_info);
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text=annotate->text;
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annotate->text=(char *) NULL;
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annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
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number_lines=1;
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for (p=text; *p != '\0'; p++)
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if (*p == '\n')
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number_lines++;
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textlist=(char **) AcquireQuantumMemory(number_lines+1,sizeof(*textlist));
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if (textlist == (char **) NULL)
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{
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annotate_info=DestroyDrawInfo(annotate_info);
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annotate=DestroyDrawInfo(annotate);
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text=DestroyString(text);
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return(MagickFalse);
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}
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p=text;
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for (i=0; i < (ssize_t) number_lines; i++)
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{
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char
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*q;
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textlist[i]=p;
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for (q=p; *q != '\0'; q++)
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if ((*q == '\r') || (*q == '\n'))
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break;
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if (*q == '\r')
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{
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*q='\0';
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q++;
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}
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*q='\0';
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p=q+1;
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}
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textlist[i]=(char *) NULL;
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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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{
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(void) ParsePageGeometry(image,annotate_info->geometry,&geometry,
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&image->exception);
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(void) ParseGeometry(annotate_info->geometry,&geometry_info);
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}
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if (SetImageStorageClass(image,DirectClass) == MagickFalse)
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{
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annotate_info=DestroyDrawInfo(annotate_info);
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annotate=DestroyDrawInfo(annotate);
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textlist=(char **) RelinquishMagickMemory(textlist);
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text=DestroyString(text);
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return(MagickFalse);
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}
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if (IsGrayColorspace(image->colorspace) != MagickFalse)
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(void) SetImageColorspace(image,sRGBColorspace);
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status=MagickTrue;
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(void) memset(&metrics,0,sizeof(metrics));
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for (i=0; textlist[i] != (char *) NULL; i++)
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{
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if (*textlist[i] == '\0')
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continue;
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/*
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Position text relative to image.
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*/
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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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if ((metrics.width == 0) || (annotate->gravity != NorthWestGravity))
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(void) GetTypeMetrics(image,annotate,&metrics);
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height=(size_t) floor(metrics.ascent-metrics.descent+0.5);
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if (height == 0)
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height=draw_info->pointsize;
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height+=(size_t) floor(draw_info->interline_spacing+0.5);
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switch (annotate->gravity)
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{
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case UndefinedGravity:
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default:
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{
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offset.x=annotate_info->affine.tx+i*annotate_info->affine.ry*height;
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offset.y=annotate_info->affine.ty+i*annotate_info->affine.sy*height;
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break;
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}
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case NorthWestGravity:
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{
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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*
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(metrics.ascent+metrics.descent);
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offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+i*
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annotate_info->affine.sy*height+annotate_info->affine.sy*
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metrics.ascent;
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break;
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}
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case NorthGravity:
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{
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offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+
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geometry.width/2.0+i*annotate_info->affine.ry*height-
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annotate_info->affine.sx*metrics.width/2.0+annotate_info->affine.ry*
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(metrics.ascent+metrics.descent);
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offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+i*
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annotate_info->affine.sy*height+annotate_info->affine.sy*
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metrics.ascent-annotate_info->affine.rx*metrics.width/2.0;
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break;
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}
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case NorthEastGravity:
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{
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offset.x=(geometry.width == 0 ? 1.0 : -1.0)*annotate_info->affine.tx+
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geometry.width+i*annotate_info->affine.ry*height-
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annotate_info->affine.sx*metrics.width+annotate_info->affine.ry*
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(metrics.ascent+metrics.descent)-1.0;
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offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+i*
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annotate_info->affine.sy*height+annotate_info->affine.sy*
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metrics.ascent-annotate_info->affine.rx*metrics.width;
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break;
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}
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case WestGravity:
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{
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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*
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(metrics.ascent+metrics.descent-(number_lines-1.0)*height)/2.0;
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offset.y=(geometry.height == 0 ? -1.0 : 1.0)*annotate_info->affine.ty+
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geometry.height/2.0+i*annotate_info->affine.sy*height+
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annotate_info->affine.sy*(metrics.ascent+metrics.descent-
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(number_lines-1.0)*height)/2.0;
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break;
|
||
}
|
||
case StaticGravity:
|
||
case CenterGravity:
|
||
{
|
||
offset.x=(geometry.width == 0 ? -1.0 : 1.0)*annotate_info->affine.tx+
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geometry.width/2.0+i*annotate_info->affine.ry*height-
|
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annotate_info->affine.sx*metrics.width/2.0+annotate_info->affine.ry*
|
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(metrics.ascent+metrics.descent-(number_lines-1)*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/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+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+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/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/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-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-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/2.0;
|
||
offset.y=annotate_info->affine.ty+i*annotate_info->affine.sy*height-
|
||
annotate_info->affine.rx*metrics.width/2.0;
|
||
break;
|
||
}
|
||
case RightAlign:
|
||
{
|
||
offset.x=annotate_info->affine.tx+i*annotate_info->affine.ry*height-
|
||
annotate_info->affine.sx*metrics.width;
|
||
offset.y=annotate_info->affine.ty+i*annotate_info->affine.sy*height-
|
||
annotate_info->affine.rx*metrics.width;
|
||
break;
|
||
}
|
||
default:
|
||
break;
|
||
}
|
||
if (draw_info->undercolor.opacity != TransparentOpacity)
|
||
{
|
||
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,MaxTextExtent,
|
||
"rectangle 0.0,0.0 %g,%g",metrics.origin.x,(double) height);
|
||
(void) CloneString(&undercolor_info->primitive,primitive);
|
||
(void) DrawImage(image,undercolor_info);
|
||
(void) DestroyDrawInfo(undercolor_info);
|
||
}
|
||
annotate_info->affine.tx=offset.x;
|
||
annotate_info->affine.ty=offset.y;
|
||
pixel=annotate_info->fill;
|
||
if (annotate_info->stroke.opacity != TransparentOpacity)
|
||
pixel=annotate_info->stroke;
|
||
(void) QueryColorname(image,&pixel,SVGCompliance,color,&image->exception);
|
||
(void) FormatLocaleString(primitive,MagickPathExtent,"stroke %s "
|
||
"stroke-width %g line 0,0 %g,0",color,(double)
|
||
metrics.underline_thickness,(double) metrics.width);
|
||
/*
|
||
Annotate image with text.
|
||
*/
|
||
switch (annotate->decorate)
|
||
{
|
||
case 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);
|
||
break;
|
||
}
|
||
case UnderlineDecoration:
|
||
{
|
||
annotate_info->affine.ty-=(draw_info->affine.sy*
|
||
metrics.underline_position);
|
||
(void) CloneString(&annotate_info->primitive,primitive);
|
||
(void) DrawImage(image,annotate_info);
|
||
break;
|
||
}
|
||
default:
|
||
break;
|
||
}
|
||
status=RenderType(image,annotate,&offset,&metrics);
|
||
if (status == MagickFalse)
|
||
break;
|
||
if (annotate->decorate == LineThroughDecoration)
|
||
{
|
||
annotate_info->affine.ty-=(draw_info->affine.sy*(height+
|
||
metrics.underline_position+metrics.descent*2)/2.0);
|
||
(void) CloneString(&annotate_info->primitive,primitive);
|
||
(void) DrawImage(image,annotate_info);
|
||
}
|
||
}
|
||
/*
|
||
Relinquish resources.
|
||
*/
|
||
annotate_info=DestroyDrawInfo(annotate_info);
|
||
annotate=DestroyDrawInfo(annotate);
|
||
textlist=(char **) RelinquishMagickMemory(textlist);
|
||
text=DestroyString(text);
|
||
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)
|
||
%
|
||
% 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.
|
||
%
|
||
*/
|
||
MagickExport ssize_t FormatMagickCaption(Image *image,DrawInfo *draw_info,
|
||
const MagickBooleanType split,TypeMetric *metrics,char **caption)
|
||
{
|
||
MagickBooleanType
|
||
status;
|
||
|
||
char
|
||
*p,
|
||
*q,
|
||
*s;
|
||
|
||
ssize_t
|
||
i;
|
||
|
||
size_t
|
||
width;
|
||
|
||
ssize_t
|
||
n;
|
||
|
||
q=draw_info->text;
|
||
s=(char *) NULL;
|
||
for (p=(*caption); GetUTFCode(p) != 0; p+=GetUTFOctets(p))
|
||
{
|
||
if (IsUTFSpace(GetUTFCode(p)) != MagickFalse)
|
||
s=p;
|
||
if (GetUTFCode(p) == '\n')
|
||
{
|
||
q=draw_info->text;
|
||
continue;
|
||
}
|
||
for (i=0; i < (ssize_t) GetUTFOctets(p); i++)
|
||
*q++=(*(p+i));
|
||
*q='\0';
|
||
status=GetTypeMetrics(image,draw_info,metrics);
|
||
if (status == MagickFalse)
|
||
break;
|
||
width=(size_t) floor(metrics->width+draw_info->stroke_width+0.5);
|
||
if (width <= image->columns)
|
||
continue;
|
||
if (s != (char *) NULL)
|
||
{
|
||
for (i=0; i < (ssize_t) GetUTFOctets(s); i++)
|
||
*(s+i)=' ';
|
||
*s='\n';
|
||
p=s;
|
||
}
|
||
else
|
||
if ((split != MagickFalse) || (GetUTFOctets(p) > 2))
|
||
{
|
||
/*
|
||
No convenient line breaks-- insert newline.
|
||
*/
|
||
n=p-(*caption);
|
||
if ((n > 0) && ((*caption)[n-1] != '\n'))
|
||
{
|
||
char
|
||
*target;
|
||
|
||
target=AcquireString(*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;
|
||
}
|
||
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)
|
||
%
|
||
% 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.
|
||
%
|
||
*/
|
||
MagickExport MagickBooleanType GetMultilineTypeMetrics(Image *image,
|
||
const DrawInfo *draw_info,TypeMetric *metrics)
|
||
{
|
||
char
|
||
**textlist;
|
||
|
||
double
|
||
height;
|
||
|
||
DrawInfo
|
||
*annotate_info;
|
||
|
||
MagickBooleanType
|
||
status;
|
||
|
||
MagickSizeType
|
||
size;
|
||
|
||
ssize_t
|
||
i;
|
||
|
||
size_t
|
||
count;
|
||
|
||
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=StringToStrings(draw_info->text,&count);
|
||
if (textlist == (char **) NULL)
|
||
return(MagickFalse);
|
||
annotate_info->render=MagickFalse;
|
||
annotate_info->direction=UndefinedDirection;
|
||
(void) memset(metrics,0,sizeof(*metrics));
|
||
(void) memset(&extent,0,sizeof(extent));
|
||
/*
|
||
Find the widest of the text lines.
|
||
*/
|
||
annotate_info->text=textlist[0];
|
||
status=GetTypeMetrics(image,annotate_info,&extent);
|
||
*metrics=extent;
|
||
height=(count*(size_t) (metrics->ascent-metrics->descent+
|
||
0.5)+(count-1)*draw_info->interline_spacing);
|
||
size=(MagickSizeType) fabs(height);
|
||
if (AcquireMagickResource(HeightResource,size) == MagickFalse)
|
||
{
|
||
(void) ThrowMagickException(&image->exception,GetMagickModule(),
|
||
ImageError,"WidthOrHeightExceedsLimit","`%s'",image->filename);
|
||
status=MagickFalse;
|
||
}
|
||
else
|
||
{
|
||
for (i=1; i < (ssize_t) count; i++)
|
||
{
|
||
annotate_info->text=textlist[i];
|
||
status=GetTypeMetrics(image,annotate_info,&extent);
|
||
if (status == MagickFalse)
|
||
break;
|
||
if (extent.width > metrics->width)
|
||
*metrics=extent;
|
||
size=(MagickSizeType) fabs(extent.width);
|
||
if (AcquireMagickResource(WidthResource,size) == MagickFalse)
|
||
{
|
||
(void) ThrowMagickException(&image->exception,GetMagickModule(),
|
||
ImageError,"WidthOrHeightExceedsLimit","`%s'",image->filename);
|
||
status=MagickFalse;
|
||
break;
|
||
}
|
||
}
|
||
metrics->height=(double) height;
|
||
}
|
||
/*
|
||
Relinquish resources.
|
||
*/
|
||
annotate_info->text=(char *) NULL;
|
||
annotate_info=DestroyDrawInfo(annotate_info);
|
||
for (i=0; i < (ssize_t) count; 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)
|
||
%
|
||
% 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.
|
||
%
|
||
*/
|
||
MagickExport MagickBooleanType GetTypeMetrics(Image *image,
|
||
const DrawInfo *draw_info,TypeMetric *metrics)
|
||
{
|
||
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) memset(metrics,0,sizeof(*metrics));
|
||
offset.x=0.0;
|
||
offset.y=0.0;
|
||
status=RenderType(image,annotate_info,&offset,metrics);
|
||
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)
|
||
%
|
||
% 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.
|
||
%
|
||
*/
|
||
static MagickBooleanType RenderType(Image *image,const DrawInfo *draw_info,
|
||
const PointInfo *offset,TypeMetric *metrics)
|
||
{
|
||
char
|
||
*font;
|
||
|
||
const TypeInfo
|
||
*type_info;
|
||
|
||
DrawInfo
|
||
*annotate_info;
|
||
|
||
ExceptionInfo
|
||
*sans_exception;
|
||
|
||
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);
|
||
return(status);
|
||
}
|
||
if (*draw_info->font == '-')
|
||
return(RenderX11(image,draw_info,offset,metrics));
|
||
if (*draw_info->font == '^')
|
||
return(RenderPostscript(image,draw_info,offset,metrics));
|
||
if (IsPathAccessible(draw_info->font) != MagickFalse)
|
||
{
|
||
status=RenderFreetype(image,draw_info,draw_info->encoding,offset,
|
||
metrics);
|
||
return(status);
|
||
}
|
||
type_info=GetTypeInfo(draw_info->font,&image->exception);
|
||
if (type_info == (const TypeInfo *) NULL)
|
||
(void) ThrowMagickException(&image->exception,GetMagickModule(),
|
||
TypeWarning,"UnableToReadFont","`%s'",draw_info->font);
|
||
}
|
||
if ((type_info == (const TypeInfo *) NULL) &&
|
||
(draw_info->family != (const char *) NULL))
|
||
{
|
||
if (strchr(draw_info->family,',') == (char *) NULL)
|
||
type_info=GetTypeInfoByFamily(draw_info->family,draw_info->style,
|
||
draw_info->stretch,draw_info->weight,&image->exception);
|
||
if (type_info == (const TypeInfo *) NULL)
|
||
{
|
||
char
|
||
**family;
|
||
|
||
int
|
||
number_families;
|
||
|
||
ssize_t
|
||
i;
|
||
|
||
/*
|
||
Parse font family list.
|
||
*/
|
||
family=StringToArgv(draw_info->family,&number_families);
|
||
for (i=1; i < (ssize_t) number_families; i++)
|
||
{
|
||
type_info=GetTypeInfoByFamily(family[i],draw_info->style,
|
||
draw_info->stretch,draw_info->weight,&image->exception);
|
||
if ((type_info != (const TypeInfo *) NULL) &&
|
||
(LocaleCompare(family[i],type_info->family) == 0))
|
||
break;
|
||
}
|
||
for (i=0; i < (ssize_t) number_families; i++)
|
||
family[i]=DestroyString(family[i]);
|
||
family=(char **) RelinquishMagickMemory(family);
|
||
if (type_info == (const TypeInfo *) NULL)
|
||
(void) ThrowMagickException(&image->exception,GetMagickModule(),
|
||
TypeWarning,"UnableToReadFont","`%s'",draw_info->family);
|
||
}
|
||
}
|
||
font=GetPolicyValue("system:font");
|
||
if (font != (char *) NULL)
|
||
{
|
||
if (IsPathAccessible(font) != MagickFalse)
|
||
{
|
||
/*
|
||
Render with default system font.
|
||
*/
|
||
annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
|
||
annotate_info->font=font;
|
||
status=RenderFreetype(image,annotate_info,annotate_info->encoding,
|
||
offset,metrics);
|
||
annotate_info=DestroyDrawInfo(annotate_info);
|
||
return(status);
|
||
}
|
||
font=DestroyString(font);
|
||
}
|
||
sans_exception=AcquireExceptionInfo();
|
||
if (type_info == (const TypeInfo *) NULL)
|
||
type_info=GetTypeInfoByFamily("Open Sans",draw_info->style,
|
||
draw_info->stretch,draw_info->weight,sans_exception);
|
||
if (type_info == (const TypeInfo *) NULL)
|
||
type_info=GetTypeInfoByFamily("Sans Serif",draw_info->style,
|
||
draw_info->stretch,draw_info->weight,sans_exception);
|
||
if (type_info == (const TypeInfo *) NULL)
|
||
type_info=GetTypeInfoByFamily((const char *) NULL,draw_info->style,
|
||
draw_info->stretch,draw_info->weight,sans_exception);
|
||
if (type_info == (const TypeInfo *) NULL)
|
||
type_info=GetTypeInfo("*",sans_exception);
|
||
sans_exception=DestroyExceptionInfo(sans_exception);
|
||
if (type_info == (const TypeInfo *) NULL)
|
||
{
|
||
status=RenderFreetype(image,draw_info,draw_info->encoding,offset,metrics);
|
||
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);
|
||
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)
|
||
%
|
||
% 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.
|
||
%
|
||
*/
|
||
|
||
#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)
|
||
{
|
||
#if defined(MAGICKCORE_RAQM_DELEGATE)
|
||
const char
|
||
*features;
|
||
|
||
raqm_t
|
||
*rq;
|
||
|
||
raqm_glyph_t
|
||
*glyphs;
|
||
|
||
ssize_t
|
||
i;
|
||
|
||
size_t
|
||
extent;
|
||
|
||
magick_unreferenced(flags);
|
||
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");
|
||
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;
|
||
|
||
ssize_t
|
||
i;
|
||
|
||
ssize_t
|
||
last_glyph;
|
||
|
||
/*
|
||
Simple layout for bi-directional text (right-to-left or left-to-right).
|
||
*/
|
||
magick_unreferenced(image);
|
||
*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=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,(*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 inline MagickBooleanType IsEmptyOutline(FT_Outline outline)
|
||
{
|
||
return((outline.n_points == 0) || (outline.n_contours <= 0) ? MagickTrue :
|
||
MagickFalse);
|
||
}
|
||
|
||
static int TraceCubicBezier(FT_Vector *p,FT_Vector *q,FT_Vector *to,
|
||
DrawInfo *draw_info)
|
||
{
|
||
AffineMatrix
|
||
affine;
|
||
|
||
char
|
||
path[MaxTextExtent];
|
||
|
||
affine=draw_info->affine;
|
||
(void) FormatLocaleString(path,MaxTextExtent,"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[MaxTextExtent];
|
||
|
||
affine=draw_info->affine;
|
||
(void) FormatLocaleString(path,MaxTextExtent,"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[MaxTextExtent];
|
||
|
||
affine=draw_info->affine;
|
||
(void) FormatLocaleString(path,MaxTextExtent,"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[MaxTextExtent];
|
||
|
||
affine=draw_info->affine;
|
||
(void) FormatLocaleString(path,MaxTextExtent,"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)
|
||
{
|
||
#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;
|
||
|
||
ExceptionInfo
|
||
*exception;
|
||
|
||
FT_BBox
|
||
bounds;
|
||
|
||
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_UInt
|
||
first_glyph_id,
|
||
last_glyph_id,
|
||
missing_glyph_id;
|
||
|
||
FT_Vector
|
||
origin;
|
||
|
||
GlyphInfo
|
||
glyph;
|
||
|
||
GraphemeInfo
|
||
*grapheme;
|
||
|
||
MagickBooleanType
|
||
status;
|
||
|
||
PointInfo
|
||
resolution;
|
||
|
||
char
|
||
*p;
|
||
|
||
ssize_t
|
||
i;
|
||
|
||
size_t
|
||
length;
|
||
|
||
ssize_t
|
||
code,
|
||
last_character,
|
||
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.
|
||
*/
|
||
exception=(&image->exception);
|
||
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);
|
||
if (ft_status != 0)
|
||
{
|
||
(void) FT_Done_FreeType(library);
|
||
(void) ThrowMagickException(exception,GetMagickModule(),TypeError,
|
||
"UnableToReadFont","`%s'",args.pathname);
|
||
args.pathname=DestroyString(args.pathname);
|
||
return(MagickFalse);
|
||
}
|
||
args.pathname=DestroyString(args.pathname);
|
||
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 defined(FT_ENCODING_PRC)
|
||
if (LocaleCompare(encoding,"GB2312") == 0)
|
||
encoding_type=FT_ENCODING_PRC;
|
||
#endif
|
||
#if defined(FT_ENCODING_JOHAB)
|
||
if (LocaleCompare(encoding,"Johab") == 0)
|
||
encoding_type=FT_ENCODING_JOHAB;
|
||
#endif
|
||
#if defined(FT_ENCODING_ADOBE_LATIN_1)
|
||
if (LocaleCompare(encoding,"Latin-1") == 0)
|
||
encoding_type=FT_ENCODING_ADOBE_LATIN_1;
|
||
#endif
|
||
#if defined(FT_ENCODING_ADOBE_LATIN_2)
|
||
if (LocaleCompare(encoding,"Latin-2") == 0)
|
||
encoding_type=FT_ENCODING_OLD_LATIN_2;
|
||
#endif
|
||
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_MS_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;
|
||
if (face->size->metrics.ascender == 0)
|
||
{
|
||
/*
|
||
Sanitize buggy ascender and descender values.
|
||
*/
|
||
metrics->ascent=face->size->metrics.y_ppem;
|
||
if (face->size->metrics.descender == 0)
|
||
metrics->descent=face->size->metrics.y_ppem/-3.5;
|
||
}
|
||
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*
|
||
(metrics->pixels_per_em.x*PerceptibleReciprocal(face->units_per_EM));
|
||
metrics->underline_thickness=face->underline_thickness*
|
||
(metrics->pixels_per_em.x*PerceptibleReciprocal(face->units_per_EM));
|
||
first_glyph_id=0;
|
||
FT_Get_First_Char(face,&first_glyph_id);
|
||
if ((draw_info->text == (char *) NULL) || (*draw_info->text == '\0') ||
|
||
(first_glyph_id == 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_DEFAULT;
|
||
if (draw_info->render == MagickFalse)
|
||
flags=FT_LOAD_NO_BITMAP;
|
||
if (draw_info->text_antialias == MagickFalse)
|
||
flags|=FT_LOAD_RENDER | 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");
|
||
if ((value != (const char *) NULL) && (LocaleCompare(value,"off") == 0))
|
||
flags|=FT_LOAD_NO_HINTING;
|
||
glyph.id=0;
|
||
glyph.image=(FT_Glyph) NULL;
|
||
last_glyph_id=0;
|
||
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);
|
||
if (image->matte == MagickFalse)
|
||
(void) SetImageAlphaChannel(image,OpaqueAlphaChannel);
|
||
}
|
||
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);
|
||
missing_glyph_id=FT_Get_Char_Index(face,' ');
|
||
code=0;
|
||
last_character=(ssize_t) length-1;
|
||
for (i=0; i < (ssize_t) length; i++)
|
||
{
|
||
FT_BitmapGlyph
|
||
bitmap;
|
||
|
||
FT_Outline
|
||
outline;
|
||
|
||
PointInfo
|
||
point;
|
||
|
||
/*
|
||
Render UTF-8 sequence.
|
||
*/
|
||
glyph.id=grapheme[i].index;
|
||
if (glyph.id == 0)
|
||
glyph.id=missing_glyph_id;
|
||
if ((glyph.id != 0) && (last_glyph_id != 0))
|
||
origin.x+=(FT_Pos) (64.0*draw_info->kerning);
|
||
glyph.origin=origin;
|
||
glyph.origin.x+=grapheme[i].x_offset;
|
||
glyph.origin.y+=grapheme[i].y_offset;
|
||
if (glyph.image != (FT_Glyph) NULL)
|
||
{
|
||
FT_Done_Glyph(glyph.image);
|
||
glyph.image=(FT_Glyph) NULL;
|
||
}
|
||
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;
|
||
outline=((FT_OutlineGlyph) glyph.image)->outline;
|
||
if ((glyph.image->format != FT_GLYPH_FORMAT_OUTLINE) &&
|
||
(IsEmptyOutline(outline) == MagickFalse))
|
||
continue;
|
||
ft_status=FT_Outline_Get_BBox(&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.opacity != TransparentOpacity) ||
|
||
(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);
|
||
if (IsEmptyOutline(outline) == MagickFalse)
|
||
ft_status=FT_Outline_Decompose(&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+=(origin.x/64.0);
|
||
point.y=offset->y-bitmap->top;
|
||
if (draw_info->render != MagickFalse)
|
||
{
|
||
CacheView
|
||
*image_view;
|
||
|
||
unsigned char
|
||
*p;
|
||
|
||
MagickBooleanType
|
||
transparent_fill;
|
||
|
||
/*
|
||
Rasterize the glyph.
|
||
*/
|
||
transparent_fill=((draw_info->fill.opacity == TransparentOpacity) &&
|
||
(draw_info->fill_pattern == (Image *) NULL) &&
|
||
(draw_info->stroke.opacity == TransparentOpacity) &&
|
||
(draw_info->stroke_pattern == (Image *) NULL)) ? MagickTrue :
|
||
MagickFalse;
|
||
p=bitmap->bitmap.buffer;
|
||
image_view=AcquireAuthenticCacheView(image,exception);
|
||
for (y=0; y < (ssize_t) bitmap->bitmap.rows; y++)
|
||
{
|
||
MagickBooleanType
|
||
active,
|
||
sync;
|
||
|
||
MagickRealType
|
||
fill_opacity;
|
||
|
||
PixelPacket
|
||
fill_color,
|
||
*magick_restrict q;
|
||
|
||
ssize_t
|
||
x;
|
||
|
||
ssize_t
|
||
n,
|
||
x_offset,
|
||
y_offset;
|
||
|
||
if (status == MagickFalse)
|
||
continue;
|
||
x_offset=CastDoubleToLong(ceil(point.x-0.5));
|
||
y_offset=CastDoubleToLong(ceil(point.y+y-0.5));
|
||
if ((y_offset < 0) || (y_offset >= (ssize_t) image->rows))
|
||
continue;
|
||
q=(PixelPacket *) 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 != (PixelPacket *) NULL ? MagickTrue : MagickFalse;
|
||
}
|
||
n=y*bitmap->bitmap.pitch;
|
||
for (x=0; x < (ssize_t) bitmap->bitmap.width; x++, n++)
|
||
{
|
||
x_offset=CastDoubleToLong(ceil(point.x+x-0.5));
|
||
if ((x_offset < 0) || (x_offset >= (ssize_t) image->columns))
|
||
{
|
||
if (q != (PixelPacket *) NULL)
|
||
q++;
|
||
continue;
|
||
}
|
||
fill_opacity=1.0;
|
||
if (bitmap->bitmap.buffer != (unsigned char *) NULL)
|
||
{
|
||
if (bitmap->bitmap.pixel_mode == ft_pixel_mode_grays)
|
||
fill_opacity=(MagickRealType) (p[n])/(
|
||
bitmap->bitmap.num_grays-1);
|
||
else
|
||
if (bitmap->bitmap.pixel_mode == ft_pixel_mode_mono)
|
||
fill_opacity=((p[(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 == (PixelPacket *) NULL)
|
||
continue;
|
||
if (transparent_fill == MagickFalse)
|
||
{
|
||
(void) GetFillColor(draw_info,x_offset,y_offset,&fill_color);
|
||
fill_opacity=QuantumRange-fill_opacity*(QuantumRange-
|
||
fill_color.opacity);
|
||
MagickCompositeOver(&fill_color,fill_opacity,q,q->opacity,q);
|
||
}
|
||
else
|
||
{
|
||
double
|
||
Sa,
|
||
Da;
|
||
|
||
Da=1.0-(QuantumScale*(QuantumRange-q->opacity));
|
||
Sa=fill_opacity;
|
||
fill_opacity=(1.0-RoundToUnity(Sa+Da-Sa*Da))*QuantumRange;
|
||
SetPixelAlpha(q,fill_opacity);
|
||
}
|
||
if (active == MagickFalse)
|
||
{
|
||
sync=SyncCacheViewAuthenticPixels(image_view,exception);
|
||
if (sync == MagickFalse)
|
||
status=MagickFalse;
|
||
}
|
||
q++;
|
||
}
|
||
sync=SyncCacheViewAuthenticPixels(image_view,exception);
|
||
if (sync == MagickFalse)
|
||
status=MagickFalse;
|
||
}
|
||
image_view=DestroyCacheView(image_view);
|
||
if (((draw_info->stroke.opacity != TransparentOpacity) ||
|
||
(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,"'");
|
||
if (strlen(annotate_info->primitive) > 7)
|
||
(void) DrawImage(image,annotate_info);
|
||
(void) CloneString(&annotate_info->primitive,"path '");
|
||
}
|
||
}
|
||
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
|
||
if (i == last_character)
|
||
origin.x+=MagickMax((FT_Pos) grapheme[i].x_advance,bounds.xMax);
|
||
else
|
||
origin.x+=(FT_Pos) grapheme[i].x_advance;
|
||
metrics->origin.x=(double) origin.x;
|
||
metrics->origin.y=(double) origin.y;
|
||
if (metrics->origin.x > metrics->width)
|
||
metrics->width=metrics->origin.x;
|
||
last_glyph_id=glyph.id;
|
||
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 (glyph.image != (FT_Glyph) NULL)
|
||
{
|
||
FT_Done_Glyph(glyph.image);
|
||
glyph.image=(FT_Glyph) NULL;
|
||
}
|
||
/*
|
||
Determine font metrics.
|
||
*/
|
||
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;
|
||
metrics->width/=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)
|
||
{
|
||
(void) ThrowMagickException(&image->exception,GetMagickModule(),
|
||
MissingDelegateWarning,"DelegateLibrarySupportNotBuiltIn","`%s' (Freetype)",
|
||
draw_info->font != (char *) NULL ? draw_info->font : "none");
|
||
return(RenderPostscript(image,draw_info,offset,metrics));
|
||
}
|
||
#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)
|
||
%
|
||
% 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.
|
||
%
|
||
*/
|
||
|
||
static char *EscapeParenthesis(const char *source)
|
||
{
|
||
char
|
||
*destination;
|
||
|
||
char
|
||
*q;
|
||
|
||
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 >= (MaxTextExtent-1))
|
||
destination=(char *) AcquireQuantumMemory(length+MaxTextExtent,
|
||
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)
|
||
{
|
||
char
|
||
filename[MaxTextExtent],
|
||
geometry[MaxTextExtent],
|
||
*text;
|
||
|
||
FILE
|
||
*file;
|
||
|
||
Image
|
||
*annotate_image;
|
||
|
||
ImageInfo
|
||
*annotate_info;
|
||
|
||
int
|
||
unique_file;
|
||
|
||
MagickBooleanType
|
||
identity;
|
||
|
||
PointInfo
|
||
extent,
|
||
point,
|
||
resolution;
|
||
|
||
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(&image->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,MaxTextExtent,"%.20gx%.20g+0+0!",
|
||
floor(extent.x+0.5),floor(extent.y+0.5));
|
||
annotate_info=AcquireImageInfo();
|
||
(void) FormatLocaleString(annotate_info->filename,MaxTextExtent,"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,&image->exception);
|
||
CatchException(&image->exception);
|
||
annotate_info=DestroyImageInfo(annotate_info);
|
||
(void) RelinquishUniqueFileResource(filename);
|
||
if (annotate_image == (Image *) NULL)
|
||
return(MagickFalse);
|
||
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);
|
||
else
|
||
{
|
||
RectangleInfo
|
||
crop_info;
|
||
|
||
crop_info=GetImageBoundingBox(annotate_image,&annotate_image->exception);
|
||
crop_info.height=(size_t) ((resolution.y/DefaultResolution)*
|
||
ExpandAffine(&draw_info->affine)*draw_info->pointsize+0.5);
|
||
crop_info.y=CastDoubleToLong(ceil((resolution.y/DefaultResolution)*
|
||
extent.y/8.0-0.5));
|
||
(void) FormatLocaleString(geometry,MaxTextExtent,
|
||
"%.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);
|
||
}
|
||
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.opacity != TransparentOpacity)
|
||
{
|
||
ExceptionInfo
|
||
*exception;
|
||
|
||
MagickBooleanType
|
||
sync;
|
||
|
||
PixelPacket
|
||
fill_color;
|
||
|
||
CacheView
|
||
*annotate_view;
|
||
|
||
/*
|
||
Render fill color.
|
||
*/
|
||
if (image->matte == MagickFalse)
|
||
(void) SetImageAlphaChannel(image,OpaqueAlphaChannel);
|
||
if (annotate_image->matte == MagickFalse)
|
||
(void) SetImageAlphaChannel(annotate_image,OpaqueAlphaChannel);
|
||
fill_color=draw_info->fill;
|
||
exception=(&image->exception);
|
||
annotate_view=AcquireAuthenticCacheView(annotate_image,exception);
|
||
for (y=0; y < (ssize_t) annotate_image->rows; y++)
|
||
{
|
||
PixelPacket
|
||
*magick_restrict q;
|
||
|
||
ssize_t
|
||
x;
|
||
|
||
q=GetCacheViewAuthenticPixels(annotate_view,0,y,annotate_image->columns,
|
||
1,exception);
|
||
if (q == (PixelPacket *) NULL)
|
||
break;
|
||
for (x=0; x < (ssize_t) annotate_image->columns; x++)
|
||
{
|
||
(void) GetFillColor(draw_info,x,y,&fill_color);
|
||
SetPixelAlpha(q,ClampToQuantum((((QuantumRange-GetPixelIntensity(
|
||
annotate_image,q))*(QuantumRange-fill_color.opacity))/
|
||
QuantumRange)));
|
||
SetPixelRed(q,fill_color.red);
|
||
SetPixelGreen(q,fill_color.green);
|
||
SetPixelBlue(q,fill_color.blue);
|
||
q++;
|
||
}
|
||
sync=SyncCacheViewAuthenticPixels(annotate_view,exception);
|
||
if (sync == MagickFalse)
|
||
break;
|
||
}
|
||
annotate_view=DestroyCacheView(annotate_view);
|
||
(void) CompositeImage(image,OverCompositeOp,annotate_image,
|
||
(ssize_t) ceil(offset->x-0.5),(ssize_t) ceil(offset->y-(metrics->ascent+
|
||
metrics->descent)-0.5));
|
||
}
|
||
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)
|
||
%
|
||
% 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.
|
||
%
|
||
*/
|
||
static MagickBooleanType RenderX11(Image *image,const DrawInfo *draw_info,
|
||
const PointInfo *offset,TypeMetric *metrics)
|
||
{
|
||
MagickBooleanType
|
||
status;
|
||
|
||
if (annotate_semaphore == (SemaphoreInfo *) NULL)
|
||
ActivateSemaphoreInfo(&annotate_semaphore);
|
||
LockSemaphoreInfo(annotate_semaphore);
|
||
status=XRenderImage(image,draw_info,offset,metrics);
|
||
UnlockSemaphoreInfo(annotate_semaphore);
|
||
return(status);
|
||
}
|