First part of interactive checks that coding systems encode regions. 2008-01-21 Aidan Kehoe <kehoea@parhasard.net> * coding.el (decode-coding-string): (encode-coding-string): Accept GNU's NOCOPY argument for these. Todo; write compiler macros to use it. (query-coding-warning-face): New face, to show unencodable characters. (default-query-coding-region-safe-charset-skip-chars-map): New variable, a cache used by #'default-query-coding-region. (default-query-coding-region): Default implementation of #'query-coding-region, using the safe-charsets and safe-chars coding systemproperties. (query-coding-region): New function; can a given coding system encode a given region? (query-coding-string): New function; can a given coding system encode a given string? (unencodable-char-position): Function API taken from GNU; return the first unencodable position given a string and coding system. (encode-coding-char): Function API taken from GNU; return CHAR encoded using CODING-SYSTEM, or nil if CODING-SYSTEM would trash CHAR. ((unless (featurep 'mule)): Override the default query-coding-region implementation on non-Mule. * mule/mule-coding.el (make-8-bit-generate-helper): Eliminate a duplicate comment. (make-8-bit-choose-category): Simplify implementation. (8-bit-fixed-query-coding-region): Implementation of #'query-coding-region for coding systems created with #'make-8-bit-coding-system. (make-8-bit-coding-system): Initialise the #'query-coding-region implementation for these character sets. (make-8-bit-coding-system): Ditto for the compiler macro version of this function. * unicode.el (unicode-query-coding-skip-chars-arg): New variable, used by unicode-query-coding-region, initialised in mule/general-late.el. (unicode-query-coding-region): New function, the #'query-coding-region implementation for Unicode coding systems. Initialise the query-coding-function property for the Unicode coding systems to #'unicode-query-coding-region. * mule/mule-charset.el (charset-skip-chars-string): New function. Return a #'skip-chars-forward argument that skips all characters in CHARSET. (map-charset-chars): Function synced from GNU, modified to work with XEmacs. Map FUNC across the int value charset ranges of CHARSET.

/*
This is a modified DND 1.0 library which does not depend on Xt
event handling.
Modifications Copyright (c) 1997 Oliver Graf <ograf@fga.de>

Original DND lib
Copyright (C) 1996 César Crusius

This file is part of the DND Library.  This library is free
software; you can redistribute it and/or modify it under the terms of
the GNU Library General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your
option) any later version.  This library is distributed in the hope
that it will be useful, but WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE.  See the GNU Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#ifndef __DragAndDropH__
#define __DragAndDropH__ 1L

/* The standard DND types are defined here */
#include "offix-types.h"

/* Xt stuff is defined here */
#include "xintrinsic.h"

void DndInitialize(Widget shell);

int
DndHandleDragging(Widget widget,
		  XEvent* event);

void DndSetData(int Type, unsigned char *Data, unsigned long Size);
void DndGetData(XEvent *event, unsigned char **Data, unsigned long *Size);

int		DndIsIcon(Widget widget);
int		DndDataType(XEvent *event);
int		DndDragButtons(XEvent *event);
Window          DndSourceWindow(XEvent *event);

void
DndDropCoordinates(Widget widget,
		   XEvent *event,
		   int *x,
		   int *y);
void
DndDropRootCoordinates(XEvent *event,
		       int *x,
		       int *y);

long
DndProtocolVersion(XEvent *event);

int
DndIsDropMessage(XEvent *event);

void
DndChangeCursor(int Type,
		int width,int height,
		char *image,char *mask,
		int hot_x,int hot_y);
#endif