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   XImportInfo
 100     ximage_info;
 101
 102   (void) exception;
 103   XGetImportInfo(&ximage_info);
 104   ximage_info.screen=IsStringTrue(GetImageOption(image_info,"x:screen"));
 105   ximage_info.silent=IsStringTrue(GetImageOption(image_info,"x:silent"));
 106   return(XImportImage(image_info,&ximage_info,exception));
 107 }
 108 #endif
 109 \f
 110 /*
 111 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 112 %                                                                             %
 113 %                                                                             %
 114 %                                                                             %
 115 %   R e g i s t e r X I m a g e                                               %
 116 %                                                                             %
 117 %                                                                             %
 118 %                                                                             %
 119 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 120 %
 121 %  RegisterXImage() adds attributes for the X image format to
 122 %  the list of supported formats.  The attributes include the image format
 123 %  tag, a method to read and/or write the format, whether the format
 124 %  supports the saving of more than one frame to the same file or blob,
 125 %  whether the format supports native in-memory I/O, and a brief
 126 %  description of the format.
 127 %
 128 %  The format of the RegisterXImage method is:
 129 %
 130 %      size_t RegisterXImage(void)
 131 %
 132 */
 133 ModuleExport size_t RegisterXImage(void)
 134 {
 135   MagickInfo
 136     *entry;
 137
 138   entry=SetMagickInfo("X");
 139 #if defined(MAGICKCORE_X11_DELEGATE)
 140   entry->decoder=(DecodeImageHandler *) ReadXImage;
 141   entry->encoder=(EncodeImageHandler *) WriteXImage;
 142 #endif
 143   entry->format_type=ImplicitFormatType;
 144   entry->description=ConstantString("X Image");
 145   entry->module=ConstantString("X");
 146   (void) RegisterMagickInfo(entry);
 147   return(MagickImageCoderSignature);
 148 }
 149 \f
 150 /*
 151 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 152 %                                                                             %
 153 %                                                                             %
 154 %                                                                             %
 155 %   U n r e g i s t e r X I m a g e                                           %
 156 %                                                                             %
 157 %                                                                             %
 158 %                                                                             %
 159 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 160 %
 161 %  UnregisterXImage() removes format registrations made by the
 162 %  X module from the list of supported formats.
 163 %
 164 %  The format of the UnregisterXImage method is:
 165 %
 166 %      UnregisterXImage(void)
 167 %
 168 */
 169 ModuleExport void UnregisterXImage(void)
 170 {
 171   (void) UnregisterMagickInfo("X");
 172 }
 173 \f
 174 /*
 175 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 176 %                                                                             %
 177 %                                                                             %
 178 %                                                                             %
 179 %   W r i t e X I m a g e                                                     %
 180 %                                                                             %
 181 %                                                                             %
 182 %                                                                             %
 183 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 184 %
 185 %  WriteXImage() writes an image to an X server.
 186 %
 187 %  The format of the WriteXImage method is:
 188 %
 189 %      MagickBooleanType WriteXImage(const ImageInfo *image_info,
 190 %        Image *image,ExceptionInfo *exception)
 191 %
 192 %  A description of each parameter follows.
 193 %
 194 %    o image_info: the image info.
 195 %
 196 %    o image:  The image.
 197 %
 198 %    o exception: return any errors or warnings in this structure.
 199 %
 200 */
 201 static MagickBooleanType WriteXImage(const ImageInfo *image_info,Image *image,
 202   ExceptionInfo *exception)
 203 {
 204   return(DisplayImages(image_info,image,exception));
 205 }