granicus.if.org Git - imagemagick/blob - coders/x.c

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %                                   X   X                                     %
   7 %                                    X X                                      %
   8 %                                     X                                       %
   9 %                                    X X                                      %
  10 %                                   X   X                                     %
  11 %                                                                             %
  12 %                                                                             %
  13 %                    Read/Write Image from/to X11 Server.                     %
  14 %                                                                             %
  15 %                              Software Design                                %
  16 %                                John Cristy                                  %
  17 %                                 July 1992                                   %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2012 ImageMagick Studio LLC, a non-profit organization      %
  21 %  dedicated to making software imaging solutions freely available.           %
  22 %                                                                             %
  23 %  You may not use this file except in compliance with the License.  You may  %
  24 %  obtain a copy of the License at                                            %
  25 %                                                                             %
  26 %    http://www.imagemagick.org/script/license.php                            %
  27 %                                                                             %
  28 %  Unless required by applicable law or agreed to in writing, software        %
  29 %  distributed under the License is distributed on an "AS IS" BASIS,          %
  30 %  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
  31 %  See the License for the specific language governing permissions and        %
  32 %  limitations under the License.                                             %
  33 %                                                                             %
  34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  35 %
  36 %
  37 */
  38 \f
  39 /*
  40   Include declarations.
  41 */
  42 #include "MagickCore/studio.h"
  43 #include "MagickCore/blob.h"
  44 #include "MagickCore/blob-private.h"
  45 #include "MagickCore/client.h"
  46 #include "MagickCore/display.h"
  47 #include "MagickCore/exception.h"
  48 #include "MagickCore/exception-private.h"
  49 #include "MagickCore/image.h"
  50 #include "MagickCore/image-private.h"
  51 #include "MagickCore/list.h"
  52 #include "MagickCore/magick.h"
  53 #include "MagickCore/memory_.h"
  54 #include "MagickCore/option.h"
  55 #include "MagickCore/quantum-private.h"
  56 #include "MagickCore/static.h"
  57 #include "MagickCore/string_.h"
  58 #include "MagickCore/module.h"
  59 #include "MagickCore/token.h"
  60 #include "MagickCore/utility.h"
  61 #include "MagickCore/xwindow.h"
  62 #include "MagickCore/xwindow-private.h"
  63 \f
  64 /*
  65   Forward declarations.
  66 */
  67 #if defined(MAGICKCORE_X11_DELEGATE)
  68 static MagickBooleanType
  69   WriteXImage(const ImageInfo *,Image *,ExceptionInfo *);
  70 #endif
  71 \f
  72 #if defined(MAGICKCORE_X11_DELEGATE)
  73 /*
  74 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  75 %                                                                             %
  76 %                                                                             %
  77 %                                                                             %
  78 %   R e a d X I m a g e                                                       %
  79 %                                                                             %
  80 %                                                                             %
  81 %                                                                             %
  82 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  83 %
  84 %  ReadXImage() reads an image from an X window.
  85 %
  86 %  The format of the ReadXImage method is:
  87 %
  88 %      Image *ReadXImage(const ImageInfo *image_info,ExceptionInfo *exception)
  89 %
  90 %  A description of each parameter follows:
  91 %
  92 %    o image_info: the image info.
  93 %
  94 %    o exception: return any errors or warnings in this structure.
  95 %
  96 */
  97 static Image *ReadXImage(const ImageInfo *image_info,ExceptionInfo *exception)
  98 {
  99   const char
 100     *option;
 101
 102   XImportInfo
 103     ximage_info;
 104
 105   (void) exception;
 106   XGetImportInfo(&ximage_info);
 107   option=GetImageOption(image_info,"x:screen");
 108   if (option != (const char *) NULL)
 109     ximage_info.screen=IsMagickTrue(option);
 110   option=GetImageOption(image_info,"x:silent");
 111   if (option != (const char *) NULL)
 112     ximage_info.silent=IsMagickTrue(option);
 113   return(XImportImage(image_info,&ximage_info,exception));
 114 }
 115 #endif
 116 \f
 117 /*
 118 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 119 %                                                                             %
 120 %                                                                             %
 121 %                                                                             %
 122 %   R e g i s t e r X I m a g e                                               %
 123 %                                                                             %
 124 %                                                                             %
 125 %                                                                             %
 126 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 127 %
 128 %  RegisterXImage() adds attributes for the X image format to
 129 %  the list of supported formats.  The attributes include the image format
 130 %  tag, a method to read and/or write the format, whether the format
 131 %  supports the saving of more than one frame to the same file or blob,
 132 %  whether the format supports native in-memory I/O, and a brief
 133 %  description of the format.
 134 %
 135 %  The format of the RegisterXImage method is:
 136 %
 137 %      size_t RegisterXImage(void)
 138 %
 139 */
 140 ModuleExport size_t RegisterXImage(void)
 141 {
 142   MagickInfo
 143     *entry;
 144
 145   entry=SetMagickInfo("X");
 146 #if defined(MAGICKCORE_X11_DELEGATE)
 147   entry->decoder=(DecodeImageHandler *) ReadXImage;
 148   entry->encoder=(EncodeImageHandler *) WriteXImage;
 149 #endif
 150   entry->format_type=ImplicitFormatType;
 151   entry->description=ConstantString("X Image");
 152   entry->module=ConstantString("X");
 153   (void) RegisterMagickInfo(entry);
 154   return(MagickImageCoderSignature);
 155 }
 156 \f
 157 /*
 158 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 159 %                                                                             %
 160 %                                                                             %
 161 %                                                                             %
 162 %   U n r e g i s t e r X I m a g e                                           %
 163 %                                                                             %
 164 %                                                                             %
 165 %                                                                             %
 166 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 167 %
 168 %  UnregisterXImage() removes format registrations made by the
 169 %  X module from the list of supported formats.
 170 %
 171 %  The format of the UnregisterXImage method is:
 172 %
 173 %      UnregisterXImage(void)
 174 %
 175 */
 176 ModuleExport void UnregisterXImage(void)
 177 {
 178   (void) UnregisterMagickInfo("X");
 179 }
 180 \f
 181 /*
 182 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 183 %                                                                             %
 184 %                                                                             %
 185 %                                                                             %
 186 %   W r i t e X I m a g e                                                     %
 187 %                                                                             %
 188 %                                                                             %
 189 %                                                                             %
 190 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 191 %
 192 %  WriteXImage() writes an image to an X server.
 193 %
 194 %  The format of the WriteXImage method is:
 195 %
 196 %      MagickBooleanType WriteXImage(const ImageInfo *image_info,
 197 %        Image *image,ExceptionInfo *exception)
 198 %
 199 %  A description of each parameter follows.
 200 %
 201 %    o image_info: the image info.
 202 %
 203 %    o image:  The image.
 204 %
 205 %    o exception: return any errors or warnings in this structure.
 206 %
 207 */
 208 static MagickBooleanType WriteXImage(const ImageInfo *image_info,Image *image,
 209   ExceptionInfo *exception)
 210 {
 211   return(DisplayImages(image_info,image,exception));
 212 }