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 /*
 
 Copyright 1989, 1998  The Open Group
 
 Permission to use, copy, modify, distribute, and sell this software and its
 documentation for any purpose is hereby granted without fee, provided that
 the above copyright notice appear in all copies and that both that
 copyright notice and this permission notice appear in supporting
 documentation.
 
 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
 OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 Except as contained in this notice, the name of The Open Group shall not be
 used in advertising or otherwise to promote the sale, use or other dealings
 in this Software without prior written authorization from The Open Group.
 
 */
 
 /*
  * Author:  Chris D. Peterson, MIT X Consortium
  */
 
 /************************************************************
 
         The Editres Protocol
 
 
   The Client message sent to the application is:
 
   ATOM = "ResEditor"        --- RES_EDITOR_NAME
 
   FORMAT = 32                   --- RES_EDIT_SEND_EVENT_FORMAT
 
   l[0] = timestamp
   l[1] = command atom name
   l[2] = ident of command
   l[3] = protocol version number to use
 
 
 
   The binary protocol has the following format:
 
     Card8:      8-bit unsigned integer
     Card16:     16-bit unsigned integer
     Card32:     32-bit unsigned integer
     Int16:      16-bit signed integer
     Window:     32-bit value
     Widget:     32-bit value
     String8:        ListOfCard8
 
     [a][b][c] represent an exclusive list of choices.
 
     All widgets are passed as a list of widgets, containing the
     full instance heirarchy of this widget.  The hierarchy is ordered
     from parent to child.  Thus the first element of each list is
     the root of the widget tree (this makes verifying that the widget
     still exists, MUCH faster).
 
     ListOfFoo comprises a list of things in the following format:
 
     number:         Card16
     <number> things:    ????
 
   This is a synchronous protocol, every request MUST be followed by a
   reply.
 
   Request:
 
     Serial Number:  Card8
     Op Code:    Card8 - { SendWidgetTree = 0,
                   SetValues = 1,
                   GetResources = 2,
                   GetGeometry = 3,
                   FindChild = 4,
                   GetValues = 5 }
     Length:     Card32
     Data:
 
    Reply:
 
     Serial Number:  Card8
     Type:       Card8 - { Formatted = 0,
                               Unformatted = 1,
                   ProtocolMismatch = 2
                 }
     Length:     Card32
 
 
    Byte Order:
 
     All Fields are MSB -> LSB
 
     Data:
 
         Formatted:
 
             The data contains the reply information for the request as
         specified below if the reply type is "Formatted".  The return
         values for the other reply types are shown below.
 
         Unformatted:
 
         Message:    String8
 
     ProtocolMismatch:
 
         RequestedVersion:       Card8
 
 ------------------------------------------------------------
 
    SendWidgetTree:
 
     --->
 
     Number of Entries:  Card16
     Entry:
         widget:     ListOfWidgets
         name:       String8
         class:      String8
         window:     Card32
             toolkit:        String8
 
         SendWidgetTree returns the toolkit type, and a fully specified list
         of widgets for each widget in the tree.  This is enough information
         to completely reconstruct the entire widget hierarchy.
 
     The window return value contains the Xid of the window currently
     used by this widget.  If the widget is unrealized then 0 is returned,
     and if widget is a non-windowed object a value of 2 is returned.
 
    SetValues:
 
     name:   String8
     type:   String8
     value:  String8
     Number of Entries:  Card16
     Entry:
         widget:     ListOfWidgets
 
     --->
 
     Number of Entries:  Card16
     Entry:
         widget:     ListOfWidgets
         message:    String8
 
     SetValues will allow the same resource to be set on a number of
     widgets.  This function will return an error message if the SetValues
     request caused an Xt error.
 
   GetValues:
 
         names:                ListOfString8
         widget:               Widget
 
         --->
     novalues:             ListOfCard16
     values:               ListOfString8
 
         GetValues will allow a number of resource values to be read
         on a particular widget.  The request specifies the names of
     the resources wanted and the widget id these resources are
     from.  The reply returns a list of indices from the requests
     name list of resources for which a value can not be returned.
     It also returns a list of returned values, in the order of the
         requests names list, skipping those indices present in novalues.
 
    GetResources:
 
     Number of Entries:  Card16
     Entry
         widget:     ListOfWidgets:
 
     ---->
 
     Number of Entries:  Card16
     Entry
         Widget:         ListOfWidgets:
         Error:          Bool
 
         [ Message:      String 8 ]
         [ Number of Resources:  Card16
         Resource:
             Kind:   {normal, constraint}
             Name:   String8
             Class:  String8
             Type:   String8 ]
 
     GetResources retrieves the kind, name, class, and type for every
     widget passed to it.  If an error occurred with the resource fetch
     Error will be set to True for the given widget and a message
     is returned rather than the resource info.
 
   GetGeometry:
 
     Number of Entries:  Card16
     Entry
         Widget:     ListOfWidgets:
 
     ---->
 
     Number of Entries:  Card16
     Entry
         Widget:         ListOfWidgets:
         Error:          Bool
 
         [ message:      String 8 ]
         [ mapped:       Boolean
           X:        Int16
           Y:        Int16
           Width:    Card16
               Height:   Card16
           BorderWidth:  Card16 ]
 
     GetGeometry retrieves the mapping state, x, y, width, height
     and border width for each widget specified.  If an error occurred
     with the geometry fetch "Error" will be set to True for the given
     widget and a message is returned rather than the geometry info.
     X an Y correspond to the root coordinates of the upper left corner
     of the widget (outside the window border).
 
   FindChild:
 
     Widget:     ListOfWidgets
     X:      Int16
     Y:      Int16
 
     --->
 
     Widget:     ListOfWidgets
 
     FindChild returns a descendent of the widget specified that
     is at the root coordinates specified.
 
     NOTE:
 
     The returned widget is undefined if the point is contained in
     two or more mapped widgets, or in two overlapping Rect objs.
 
   GetValues:
 
         names:                ListOfString8
         widget:               Widget
 
         --->
 
     values:               ListOfString8
 
         GetValues will allow a number of resource values to be read
         on a particular widget.  Currently only InterViews 3.0.1 Styles
     and their attributes are supported.  In addition, the current
     user interface  only supports the return of 1 resource.  The ability
     to specify and return multiple resources is defined for future editres
     interfaces where some or all of a widgets resource values are returned
     and displayed at once.
 
 
 ************************************************************/
 
 #include <X11/Intrinsic.h>
 #include <X11/Xfuncproto.h>
 
 #define XER_NBBY 8      /* number of bits in a byte */
 #define BYTE_MASK 255
 
 #define HEADER_SIZE 6
 
 #define EDITRES_IS_OBJECT 2
 #define EDITRES_IS_UNREALIZED 0
 
 /*
  * Format for atoms
  */
 #define EDITRES_FORMAT             8
 #define EDITRES_SEND_EVENT_FORMAT 32
 
 /*
  * Atoms
  */
 #define EDITRES_NAME         "Editres"
 #define EDITRES_COMMAND_ATOM "EditresCommand"
 #define EDITRES_COMM_ATOM    "EditresComm"
 #define EDITRES_CLIENT_VALUE "EditresClientVal"
 #define EDITRES_PROTOCOL_ATOM "EditresProtocol"
 
 typedef enum {
   SendWidgetTree = 0,
            SetValues      = 1,
            GetResources   = 2,
            GetGeometry    = 3,
            FindChild      = 4,
            GetValues      = 5
 } EditresCommand;
 
 typedef enum {
   NormalResource     = 0,
   ConstraintResource = 1
 } ResourceType;
 
 /*
  * The type of a resource identifier
  */
 typedef unsigned char ResIdent;
 
 typedef enum {
   PartialSuccess   = 0,
   Failure      = 1,
   ProtocolMismatch = 2
 } EditResError;
 
 typedef struct _WidgetInfo {
     unsigned short num_widgets;
   unsigned long *ids;
     Widget real_widget;
 } WidgetInfo;
 
 typedef struct _ProtocolStream {
     unsigned long size, alloc;
     unsigned char *real_top, *top, *current;
 } ProtocolStream;
 
 /************************************************************
  * Function definitions for reading and writing protocol requests
  ************************************************************/
 _XFUNCPROTOBEGIN
 
 void _XEditResPutString8
 (
  ProtocolStream     *stream,
  _Xconst char       *str
  );
 
 void _XEditResPut8
 (
  ProtocolStream     *stream,
  unsigned int       value
  );
 
 void _XEditResPut16
 (
  ProtocolStream     *stream,
  unsigned int       value
  );
 
 void _XEditResPut32
 (
  ProtocolStream     *stream,
  unsigned long      value
  );
 
 void _XEditResPutWidgetInfo
 (
  ProtocolStream     *stream,
  WidgetInfo     *info
  );
 
 void _XEditResResetStream
 (
  ProtocolStream     *stream
  );
 
 Bool _XEditResGet8
 (
  ProtocolStream     *stream,
  unsigned char      *value
  );
 
 Bool _XEditResGet16
 (
  ProtocolStream     *stream,
  unsigned short     *value
  );
 
 Bool _XEditResGetSigned16
 (
  ProtocolStream     *stream,
  short          *value
  );
 
 Bool _XEditResGet32
 (
  ProtocolStream     *stream,
  unsigned long      *value
  );
 
 Bool _XEditResGetString8
 (
  ProtocolStream     *stream,
  char           **str
  );
 
 Bool _XEditResGetWidgetInfo
 (
  ProtocolStream     *stream,
  WidgetInfo     *info
  );
 
 _XFUNCPROTOEND

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