xref: /external/ImageMagick/MagickCore/annotate.c

/*
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%                                                                             %
%           AAA   N   N  N   N   OOO   TTTTT   AAA   TTTTT  EEEEE             %
%          A   A  NN  N  NN  N  O   O    T    A   A    T    E                 %
%          AAAAA  N N N  N N N  O   O    T    AAAAA    T    EEE               %
%          A   A  N  NN  N  NN  O   O    T    A   A    T    E                 %
%          A   A  N   N  N   N   OOO     T    A   A    T    EEEEE             %
%                                                                             %
%                                                                             %
%                   MagickCore Image Annotation Methods                       %
%                                                                             %
%                              Software Design                                %
%                                John Cristy                                  %
%                                 July 1992                                   %
%                                                                             %
%                                                                             %
%  Copyright 1999-2011 ImageMagick Studio LLC, a non-profit organization      %
%  dedicated to making software imaging solutions freely available.           %
%                                                                             %
%  You may not use this file except in compliance with the License.  You may  %
%  obtain a copy of the License at                                            %
%                                                                             %
%    http://www.imagemagick.org/script/license.php                            %
%                                                                             %
%  Unless required by applicable law or agreed to in writing, software        %
%  distributed under the License is distributed on an "AS IS" BASIS,          %
%  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
%  See the License for the specific language governing permissions and        %
%  limitations under the License.                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Digital Applications (www.digapp.com) contributed the stroked text algorithm.
% It was written by Leonard Rosenthol.
%
%
*/

/*
  Include declarations.
*/
#include "MagickCore/studio.h"
#include "MagickCore/annotate.h"
#include "MagickCore/attribute.h"
#include "MagickCore/cache-view.h"
#include "MagickCore/client.h"
#include "MagickCore/color.h"
#include "MagickCore/color-private.h"
#include "MagickCore/composite.h"
#include "MagickCore/composite-private.h"
#include "MagickCore/constitute.h"
#include "MagickCore/draw.h"
#include "MagickCore/draw-private.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/gem.h"
#include "MagickCore/geometry.h"
#include "MagickCore/image-private.h"
#include "MagickCore/log.h"
#include "MagickCore/quantum.h"
#include "MagickCore/quantum-private.h"
#include "MagickCore/pixel-accessor.h"
#include "MagickCore/property.h"
#include "MagickCore/resource_.h"
#include "MagickCore/semaphore.h"
#include "MagickCore/statistic.h"
#include "MagickCore/string_.h"
#include "MagickCore/token-private.h"
#include "MagickCore/transform.h"
#include "MagickCore/type.h"
#include "MagickCore/utility.h"
#include "MagickCore/xwindow-private.h"
#if defined(MAGICKCORE_FREETYPE_DELEGATE)
#if defined(__MINGW32__)
#  undef interface
#endif
#if defined(MAGICKCORE_HAVE_FT2BUILD_H)
#  include <ft2build.h>
#endif
#if defined(FT_FREETYPE_H)
#  include FT_FREETYPE_H
#else
#  include <freetype/freetype.h>
#endif
#if defined(FT_GLYPH_H)
#  include FT_GLYPH_H
#else
#  include <freetype/ftglyph.h>
#endif
#if defined(FT_OUTLINE_H)
#  include FT_OUTLINE_H
#else
#  include <freetype/ftoutln.h>
#endif
#if defined(FT_BBOX_H)
#  include FT_BBOX_H
#else
#  include <freetype/ftbbox.h>
#endif /* defined(FT_BBOX_H) */
#endif

/*
  Annotate semaphores.
*/
static SemaphoreInfo
  *annotate_semaphore = (SemaphoreInfo *) NULL;

/*
  Forward declarations.
*/
static MagickBooleanType
  RenderType(Image *,const DrawInfo *,const PointInfo *,TypeMetric *),
  RenderPostscript(Image *,const DrawInfo *,const PointInfo *,TypeMetric *),
  RenderFreetype(Image *,const DrawInfo *,const char *,const PointInfo *,
    TypeMetric *),
  RenderX11(Image *,const DrawInfo *,const PointInfo *,TypeMetric *);

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
+   A n n o t a t e C o m p o n e n t G e n e s i s                           %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  AnnotateComponentGenesis() instantiates the annotate component.
%
%  The format of the AnnotateComponentGenesis method is:
%
%      MagickBooleanType AnnotateComponentGenesis(void)
%
*/
MagickExport MagickBooleanType AnnotateComponentGenesis(void)
{
  AcquireSemaphoreInfo(&annotate_semaphore);
  return(MagickTrue);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
+   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                         %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  AnnotateComponentTerminus() destroys the annotate component.
%
%  The format of the AnnotateComponentTerminus method is:
%
%      AnnotateComponentTerminus(void)
%
*/
MagickExport void AnnotateComponentTerminus(void)
{
  if (annotate_semaphore == (SemaphoreInfo *) NULL)
    AcquireSemaphoreInfo(&annotate_semaphore);
  DestroySemaphoreInfo(&annotate_semaphore);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   A n n o t a t e I m a g e                                                 %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  AnnotateImage() annotates an image with text.  Optionally you can include
%  any of the following bits of information about the image by embedding
%  the appropriate special characters:
%
%    %b   file size in bytes.
%    %c   comment.
%    %d   directory in which the image resides.
%    %e   extension of the image file.
%    %f   original filename of the image.
%    %h   height of image.
%    %i   filename of the image.
%    %k   number of unique colors.
%    %l   image label.
%    %m   image file format.
%    %n   number of images in a image sequence.
%    %o   output image filename.
%    %p   page number of the image.
%    %q   image depth (8 or 16).
%    %q   image depth (8 or 16).
%    %s   image scene number.
%    %t   image filename without any extension.
%    %u   a unique temporary filename.
%    %w   image width.
%    %x   x resolution of the image.
%    %y   y resolution of the image.
%
%  The format of the AnnotateImage method is:
%
%      MagickBooleanType AnnotateImage(Image *image,DrawInfo *draw_info)
%
%  A description of each parameter follows:
%
%    o image: the image.
%
%    o draw_info: the draw info.
%
*/
MagickExport MagickBooleanType AnnotateImage(Image *image,
  const DrawInfo *draw_info)
{
  char
    primitive[MaxTextExtent],
    **textlist;

  DrawInfo
    *annotate,
    *annotate_info;

  GeometryInfo
    geometry_info;

  MagickBooleanType
    status;

  PointInfo
    offset;

  RectangleInfo
    geometry;

  register ssize_t
    i;

  size_t
    length;

  TypeMetric
    metrics;

  size_t
    height,
    number_lines;

  assert(image != (Image *) NULL);
  assert(image->signature == MagickSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  assert(draw_info != (DrawInfo *) NULL);
  assert(draw_info->signature == MagickSignature);
  if (draw_info->text == (char *) NULL)
    return(MagickFalse);
  if (*draw_info->text == '\0')
    return(MagickTrue);
  textlist=StringToList(draw_info->text);
  if (textlist == (char **) NULL)
    return(MagickFalse);
  length=strlen(textlist[0]);
  for (i=1; textlist[i] != (char *) NULL; i++)
    if (strlen(textlist[i]) > length)
      length=strlen(textlist[i]);
  number_lines=(size_t) i;
  annotate=CloneDrawInfo((ImageInfo *) NULL,draw_info);
  annotate_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
  SetGeometry(image,&geometry);
  SetGeometryInfo(&geometry_info);
  if (annotate_info->geometry != (char *) NULL)
    {
      (void) ParsePageGeometry(image,annotate_info->geometry,&geometry,
        &image->exception);
      (void) ParseGeometry(annotate_info->geometry,&geometry_info);
    }
  if (SetImageStorageClass(image,DirectClass,&image->exception) == MagickFalse)
    return(MagickFalse);
  status=MagickTrue;
  for (i=0; textlist[i] != (char *) NULL; i++)
  {
    /*
      Position text relative to image.
    */
    annotate_info->affine.tx=geometry_info.xi-image->page.x;
    annotate_info->affine.ty=geometry_info.psi-image->page.y;
    (void) CloneString(&annotate->text,textlist[i]);
    (void) GetTypeMetrics(image,annotate,&metrics);
    height=(ssize_t) (metrics.ascent-metrics.descent+
      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*
          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 StaticGravity:
      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)*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,MaxTextExtent,
          "rectangle 0,0 %g,%.20g",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;
    (void) FormatLocaleString(primitive,MaxTextExtent,"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);
      }
    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);
        }
    /*
      Annotate image with text.
    */
    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)/2.0);
        (void) CloneString(&annotate_info->primitive,primitive);
        (void) DrawImage(image,annotate_info);
      }
  }
  /*
    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)
%
%  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;

  register char
    *p,
    *q,
    *s;

  register 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 (*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);
    if (status == MagickFalse)
      break;
    width=(size_t) floor(metrics->width+0.5);
    if (width <= image->columns)
      continue;
    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;
  }
  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;

  DrawInfo
    *annotate_info;

  MagickBooleanType
    status;

  register ssize_t
    i;

  TypeMetric
    extent;

  assert(image != (Image *) NULL);
  assert(image->signature == MagickSignature);
  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 == MagickSignature);
  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);
  *metrics=extent;
  for (i=1; textlist[i] != (char *) NULL; i++)
  {
    annotate_info->text=textlist[i];
    status=GetTypeMetrics(image,annotate_info,&extent);
    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)
%
%  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 == MagickSignature);
  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 == MagickSignature);
  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);
  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)
{
  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);
          return(status);
        }
      if (*draw_info->font == '-')
        return(RenderX11(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))
    {
      type_info=GetTypeInfoByFamily(draw_info->family,draw_info->style,
        draw_info->stretch,draw_info->weight,&image->exception);
      if (type_info == (const TypeInfo *) NULL)
        (void) ThrowMagickException(&image->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,&image->exception);
  if (type_info == (const TypeInfo *) NULL)
    type_info=GetTypeInfoByFamily("Helvetica",draw_info->style,
      draw_info->stretch,draw_info->weight,&image->exception);
  if (type_info == (const TypeInfo *) NULL)
    type_info=GetTypeInfoByFamily("Century Schoolbook",draw_info->style,
      draw_info->stretch,draw_info->weight,&image->exception);
  if (type_info == (const TypeInfo *) NULL)
    type_info=GetTypeInfoByFamily("Sans",draw_info->style,
      draw_info->stretch,draw_info->weight,&image->exception);
  if (type_info == (const TypeInfo *) NULL)
    type_info=GetTypeInfoByFamily((const char *) NULL,draw_info->style,
      draw_info->stretch,draw_info->weight,&image->exception);
  if (type_info == (const TypeInfo *) NULL)
    type_info=GetTypeInfo("*",&image->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 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;

  double
    direction;

  DrawInfo
    *annotate_info;

  FT_BBox
    bounds;

  FT_BitmapGlyph
    bitmap;

  FT_Encoding
    encoding_type;

  FT_Error
    status;

  FT_Face
    face;

  FT_Int32
    flags;

  FT_Library
    library;

  FT_Matrix
    affine;

  FT_Open_Args
    args;

  FT_Vector
    origin;

  GlyphInfo
    glyph,
    last_glyph;

  PointInfo
    point,
    resolution;

  register char
    *p;

  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.
  */
  status=FT_Init_FreeType(&library);
  if (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;
  status=FT_Open_Face(library,&args,(long) draw_info->face,&face);
  args.pathname=DestroyString(args.pathname);
  if (status != 0)
    {
      (void) FT_Done_FreeType(library);
      (void) ThrowMagickException(&image->exception,GetMagickModule(),
        TypeError,"UnableToReadFont","`%s'",draw_info->font);
      return(RenderPostscript(image,draw_info,offset,metrics));
    }
  if ((draw_info->metrics != (char *) NULL) &&
      (IsPathAccessible(draw_info->metrics) != MagickFalse))
    (void) FT_Attach_File(face,draw_info->metrics);
  encoding_type=ft_encoding_unicode;
  status=FT_Select_Charmap(face,encoding_type);
  if ((status != 0) && (face->num_charmaps != 0))
    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;
      status=FT_Select_Charmap(face,encoding_type);
      if (status != 0)
        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;
    }
  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);
  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 == '\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;
  value=GetImageProperty(image,"type:hinting");
  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);
  (void) CloneString(&annotate_info->primitive,"path '");
  if (draw_info->render != MagickFalse)
    {
      if (image->storage_class != DirectClass)
        (void) SetImageStorageClass(image,DirectClass,&image->exception);
      if (image->matte == MagickFalse)
        (void) SetImageAlphaChannel(image,OpaqueAlphaChannel,&image->exception);
    }
  direction=1.0;
  if (draw_info->direction == RightToLeftDirection)
    direction=(-1.0);
  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;
    }
  for (code=0; GetUTFCode(p) != 0; p+=GetUTFOctets(p))
  {
    /*
      Render UTF-8 sequence.
    */
    glyph.id=FT_Get_Char_Index(face,GetUTFCode(p));
    if (glyph.id == 0)
      glyph.id=FT_Get_Char_Index(face,'?');
    if ((glyph.id != 0) && (last_glyph.id != 0))
      {
        if (draw_info->kerning != 0.0)
          origin.x+=64.0*direction*draw_info->kerning;
        else
          if (FT_HAS_KERNING(face))
            {
              FT_Vector
                kerning;

              status=FT_Get_Kerning(face,last_glyph.id,glyph.id,
                ft_kerning_default,&kerning);
              if (status == 0)
                origin.x+=direction*kerning.x;
            }
        }
    glyph.origin=origin;
    status=FT_Load_Glyph(face,glyph.id,flags);
    if (status != 0)
      continue;
    status=FT_Get_Glyph(face->glyph,&glyph.image);
    if (status != 0)
      continue;
    status=FT_Outline_Get_BBox(&((FT_OutlineGlyph) glyph.image)->outline,
      &bounds);
    if (status != 0)
      continue;
    if ((p == draw_info->text) || (bounds.xMin < metrics->bounds.x1))
      metrics->bounds.x1=bounds.xMin;
    if ((p == draw_info->text) || (bounds.yMin < metrics->bounds.y1))
      metrics->bounds.y1=bounds.yMin;
    if ((p == draw_info->text) || (bounds.xMax > metrics->bounds.x2))
      metrics->bounds.x2=bounds.xMax;
    if ((p == draw_info->text) || (bounds.yMax > metrics->bounds.y2))
      metrics->bounds.y2=bounds.yMax;
    if (draw_info->render != MagickFalse)
      if ((draw_info->stroke.alpha != TransparentAlpha) ||
          (draw_info->stroke_pattern != (Image *) NULL))
        {
          /*
            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);
    status=FT_Glyph_To_Bitmap(&glyph.image,ft_render_mode_normal,
      (FT_Vector *) NULL,MagickTrue);
    if (status != 0)
      continue;
    bitmap=(FT_BitmapGlyph) glyph.image;
    point.x=offset->x+bitmap->left;
    point.y=offset->y-bitmap->top;
    if (draw_info->render != MagickFalse)
      {
        CacheView
          *image_view;

        ExceptionInfo
          *exception;

        MagickBooleanType
          status;

        /*
          Rasterize the glyph.
        */
        status=MagickTrue;
        exception=(&image->exception);
        image_view=AcquireCacheView(image);
        for (y=0; y < (ssize_t) bitmap->bitmap.rows; y++)
        {
          MagickBooleanType
            active,
            sync;

          MagickRealType
            fill_opacity;

          PixelPacket
            fill_color;

          register Quantum
            *restrict q;

          register ssize_t
            x;

          register unsigned char
            *p;

          ssize_t
            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;
            }
          p=bitmap->bitmap.buffer+y*bitmap->bitmap.width;
          for (x=0; x < (ssize_t) bitmap->bitmap.width; x++)
          {
            x_offset++;
            if ((*p == 0) || (x_offset < 0) ||
                (x_offset >= (ssize_t) image->columns))
              {
                p++;
                q+=GetPixelChannels(image);
                continue;
              }
            fill_opacity=(MagickRealType) (*p)/(bitmap->bitmap.num_grays-1);
            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)
              {
                p++;
                q+=GetPixelChannels(image);
                continue;
              }
            (void) GetFillColor(draw_info,x_offset,y_offset,&fill_color);
            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;
              }
            p++;
            q+=GetPixelChannels(image);
          }
          sync=SyncCacheViewAuthenticPixels(image_view,exception);
          if (sync == MagickFalse)
            status=MagickFalse;
        }
        image_view=DestroyCacheView(image_view);
      }
    if ((bitmap->left+bitmap->bitmap.width) > metrics->width)
      metrics->width=bitmap->left+bitmap->bitmap.width;
    if ((draw_info->interword_spacing != 0.0) &&
        (IsUTFSpace(GetUTFCode(p)) != MagickFalse) &&
        (IsUTFSpace(code) == MagickFalse))
      origin.x+=64.0*direction*draw_info->interword_spacing;
    else
      origin.x+=direction*face->glyph->advance.x;
    metrics->origin.x=origin.x;
    metrics->origin.y=origin.y;
    FT_Done_Glyph(last_glyph.image);
    last_glyph=glyph;
    code=GetUTFCode(p);
  }
  if (utf8 != (unsigned char *) NULL)
    utf8=(unsigned char *) RelinquishMagickMemory(utf8);
  FT_Done_Glyph(last_glyph.image);
  if ((draw_info->stroke.alpha != TransparentAlpha) ||
      (draw_info->stroke_pattern != (Image *) NULL))
    {
      if (draw_info->render != 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);
        }
      }
  /*
    Determine font metrics.
  */
  glyph.id=FT_Get_Char_Index(face,'_');
  glyph.origin=origin;
  status=FT_Load_Glyph(face,glyph.id,flags);
  if (status == 0)
    {
      status=FT_Get_Glyph(face->glyph,&glyph.image);
      if (status == 0)
        {
          status=FT_Outline_Get_BBox(&((FT_OutlineGlyph) glyph.image)->
            outline,&bounds);
          if (status == 0)
            {
              FT_Vector_Transform(&glyph.origin,&affine);
              (void) FT_Glyph_Transform(glyph.image,&affine,&glyph.origin);
              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->width-=metrics->bounds.x1/64.0;
  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(MagickTrue);
}
#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 inline size_t MagickMin(const size_t x,const size_t y)
{
  if (x < y)
    return(x);
  return(y);
}

static char *EscapeParenthesis(const char *text)
{
  char
    *buffer;

  register char
    *p;

  register ssize_t
    i;

  size_t
    escapes;

  escapes=0;
  buffer=AcquireString(text);
  p=buffer;
  for (i=0; i < (ssize_t) MagickMin(strlen(text),MaxTextExtent-escapes-1); i++)
  {
    if ((text[i] == '(') || (text[i] == ')'))
      {
        *p++='\\';
        escapes++;
      }
    *p++=text[i];
  }
  *p='\0';
  return(buffer);
}

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;

  register ssize_t
    i;

  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=(draw_info->affine.sx == draw_info->affine.sy) &&
    (draw_info->affine.rx == 0.0) && (draw_info->affine.ry == 0.0) ?
    MagickTrue : MagickFalse;
  extent.x=0.0;
  extent.y=0.0;
  for (i=0; i <= (ssize_t) (strlen(draw_info->text)+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=(ssize_t) 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.alpha != TransparentAlpha)
    {
      ExceptionInfo
        *exception;

      MagickBooleanType
        sync;

      PixelPacket
        fill_color;

      CacheView
        *annotate_view;

      /*
        Render fill color.
      */
      exception=(&image->exception);
      if (image->matte == MagickFalse)
        (void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
      if (annotate_image->matte == MagickFalse)
        (void) SetImageAlphaChannel(annotate_image,OpaqueAlphaChannel,
          exception);
      fill_color=draw_info->fill;
      annotate_view=AcquireCacheView(annotate_image);
      for (y=0; y < (ssize_t) annotate_image->rows; y++)
      {
        register ssize_t
          x;

        register Quantum
          *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++)
        {
          (void) GetFillColor(draw_info,x,y,&fill_color);
          SetPixelAlpha(annotate_image,ClampToQuantum((((MagickRealType)
            GetPixelIntensity(annotate_image,q)*fill_color.alpha)/
            QuantumRange)),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,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.
%
*/
#if defined(MAGICKCORE_X11_DELEGATE)
static MagickBooleanType RenderX11(Image *image,const DrawInfo *draw_info,
  const PointInfo *offset,TypeMetric *metrics)
{
  MagickBooleanType
    status;

  static DrawInfo
    cache_info;

  static Display
    *display = (Display *) NULL;

  static XAnnotateInfo
    annotate_info;

  static XFontStruct
    *font_info;

  static XPixelInfo
    pixel;

  static XResourceInfo
    resource_info;

  static XrmDatabase
    resource_database;

  static XStandardColormap
    *map_info;

  static XVisualInfo
    *visual_info;

  size_t
    height,
    width;

  if (annotate_semaphore == (SemaphoreInfo *) NULL)
    AcquireSemaphoreInfo(&annotate_semaphore);
  LockSemaphoreInfo(annotate_semaphore);
  if (display == (Display *) NULL)
    {
      const char
        *client_name;

      ImageInfo
        *image_info;

      /*
        Open X server connection.
      */
      display=XOpenDisplay(draw_info->server_name);
      if (display == (Display *) NULL)
        {
          ThrowXWindowException(XServerError,"UnableToOpenXServer",
            draw_info->server_name);
          return(MagickFalse);
        }
      /*
        Get user defaults from X resource database.
      */
      (void) XSetErrorHandler(XError);
      image_info=AcquireImageInfo();
      client_name=GetClientName();
      resource_database=XGetResourceDatabase(display,client_name);
      XGetResourceInfo(image_info,resource_database,client_name,&resource_info);
      resource_info.close_server=MagickFalse;
      resource_info.colormap=PrivateColormap;
      resource_info.font=AcquireString(draw_info->font);
      resource_info.background_color=AcquireString("#ffffffffffff");
      resource_info.foreground_color=AcquireString("#000000000000");
      map_info=XAllocStandardColormap();
      if (map_info == (XStandardColormap *) NULL)
        {
          ThrowXWindowException(ResourceLimitError,"MemoryAllocationFailed",
            image->filename);
          return(MagickFalse);
        }
      /*
        Initialize visual info.
      */
      visual_info=XBestVisualInfo(display,map_info,&resource_info);
      if (visual_info == (XVisualInfo *) NULL)
        {
          ThrowXWindowException(XServerError,"UnableToGetVisual",
            image->filename);
          return(MagickFalse);
        }
      map_info->colormap=(Colormap) NULL;
      pixel.pixels=(unsigned long *) NULL;
      /*
        Initialize Standard Colormap info.
      */
      XGetMapInfo(visual_info,XDefaultColormap(display,visual_info->screen),
        map_info);
      XGetPixelInfo(display,visual_info,map_info,&resource_info,(Image *) NULL,
        &pixel);
      pixel.annotate_context=XDefaultGC(display,visual_info->screen);
      /*
        Initialize font info.
      */
      font_info=XBestFont(display,&resource_info,MagickFalse);
      if (font_info == (XFontStruct *) NULL)
        {
          ThrowXWindowException(XServerError,"UnableToLoadFont",
            draw_info->font);
          return(MagickFalse);
        }
      if ((map_info == (XStandardColormap *) NULL) ||
          (visual_info == (XVisualInfo *) NULL) ||
          (font_info == (XFontStruct *) NULL))
        {
          XFreeResources(display,visual_info,map_info,&pixel,font_info,
            &resource_info,(XWindowInfo *) NULL);
          ThrowXWindowException(XServerError,"UnableToLoadFont",
            image->filename);
          return(MagickFalse);
        }
      cache_info=(*draw_info);
    }
  UnlockSemaphoreInfo(annotate_semaphore);
  /*
    Initialize annotate info.
  */
  XGetAnnotateInfo(&annotate_info);
  annotate_info.stencil=ForegroundStencil;
  if (cache_info.font != draw_info->font)
    {
      /*
        Type name has changed.
      */
      (void) XFreeFont(display,font_info);
      (void) CloneString(&resource_info.font,draw_info->font);
      font_info=XBestFont(display,&resource_info,MagickFalse);
      if (font_info == (XFontStruct *) NULL)
        {
          ThrowXWindowException(XServerError,"UnableToLoadFont",
            draw_info->font);
          return(MagickFalse);
        }
    }
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(AnnotateEvent,GetMagickModule(),
      "Font %s; pointsize %g",draw_info->font != (char *) NULL ?
      draw_info->font : "none",draw_info->pointsize);
  cache_info=(*draw_info);
  annotate_info.font_info=font_info;
  annotate_info.text=(char *) draw_info->text;
  annotate_info.width=(unsigned int) XTextWidth(font_info,draw_info->text,
    (int) strlen(draw_info->text));
  annotate_info.height=(unsigned int) font_info->ascent+font_info->descent;
  metrics->pixels_per_em.x=(double) font_info->max_bounds.width;
  metrics->pixels_per_em.y=(double) font_info->ascent+font_info->descent;
  metrics->ascent=(double) font_info->ascent+4;
  metrics->descent=(double) (-font_info->descent);
  metrics->width=annotate_info.width/ExpandAffine(&draw_info->affine);
  metrics->height=font_info->ascent+font_info->descent;
  metrics->max_advance=(double) font_info->max_bounds.width;
  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)
    return(MagickTrue);
  if (draw_info->fill.alpha == TransparentAlpha)
    return(MagickTrue);
  /*
    Render fill color.
  */
  width=annotate_info.width;
  height=annotate_info.height;
  if ((draw_info->affine.rx != 0.0) || (draw_info->affine.ry != 0.0))
    {
      if (((draw_info->affine.sx-draw_info->affine.sy) == 0.0) &&
          ((draw_info->affine.rx+draw_info->affine.ry) == 0.0))
        annotate_info.degrees=(180.0/MagickPI)*
          atan2(draw_info->affine.rx,draw_info->affine.sx);
    }
  (void) FormatLocaleString(annotate_info.geometry,MaxTextExtent,
    "%.20gx%.20g%+.20g%+.20g",(double) width,(double) height,
    ceil(offset->x-0.5),ceil(offset->y-metrics->ascent-metrics->descent+
    draw_info->interline_spacing-0.5));
  pixel.pen_color.red=ScaleQuantumToShort(draw_info->fill.red);
  pixel.pen_color.green=ScaleQuantumToShort(draw_info->fill.green);
  pixel.pen_color.blue=ScaleQuantumToShort(draw_info->fill.blue);
  status=XAnnotateImage(display,&pixel,&annotate_info,image);
  if (status == 0)
    {
      ThrowXWindowException(ResourceLimitError,"MemoryAllocationFailed",
        image->filename);
      return(MagickFalse);
    }
  return(MagickTrue);
}
#else
static MagickBooleanType RenderX11(Image *image,const DrawInfo *draw_info,
  const PointInfo *offset,TypeMetric *metrics)
{
  (void) draw_info;
  (void) offset;
  (void) metrics;
  (void) ThrowMagickException(&image->exception,GetMagickModule(),
    MissingDelegateError,"DelegateLibrarySupportNotBuiltIn","`%s' (X11)",
    image->filename);
  return(MagickFalse);
}
#endif