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/*
* Copyright (c) 2004 Stefan Ulrich
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* 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
* PAUL VOJTA OR ANY OTHER AUTHOR OF THIS SOFTWARE 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.
*/
#include "xdvi-config.h"
#include "xdvi.h"
#include <string.h>
#include <X11/Xatom.h>
#include <X11/StringDefs.h>
#if HAVE_X11_XMU_XMU_H
#include <X11/Xmu/Atoms.h>
#include <X11/Xmu/Xmu.h>
#endif
#include "events.h"
#include "util.h"
#include "encodings.h"
#include "message-window.h"
#include "selection.h"
#include "statusline.h"
/*
* Set the current X selection (i.e. the primary selection AKA XA_PRIMARY).
* Most of this is copied from Asente/Converse/Swick: X Window System Toolkit Manual
*/
/* This is file scope since deliver_selection_cb() needs access to it.
* I guess we could also store it in an Atom, but why bother ...
*/
static char *m_selection_text = NULL;
static char *m_cvt_selection_text = NULL;
static size_t m_selection_size = 0;
/* helper routine */
static Atom
fetch_atom(Widget w, const char *name)
{
Atom a;
XrmValue source, dest;
source.size = strlen(name) + 1;
source.addr = (char *)name;
dest.size = sizeof a;
dest.addr = (caddr_t)&a;
(void)XtConvertAndStore(w, XtRString, &source, XtRAtom, &dest);
return a;
}
/* Lose the selection */
static void
lose_selection_cb(Widget w, Atom *selection)
{
UNUSED(w);
UNUSED(selection);
text_change_region(TEXT_SEL_CLEAR, NULL);
}
static char *
utf8_to_native_encoding(const char *utf8)
{
static const char *text_encoding = NULL;
/* convert to user encoding, similar to search-internal.c */
if (text_encoding == NULL) {
text_encoding = get_text_encoding();
}
if (memicmp(text_encoding, "iso-8859-1", strlen("iso-8859-1")) == 0
|| memicmp(text_encoding, "iso8859-1", strlen("iso8859-1")) == 0) {
return str_utf8_to_iso_8859_1(utf8);
}
else if (memicmp(text_encoding, "utf-8", strlen("utf-8")) != 0
&& memicmp(text_encoding, "utf8", strlen("utf8")) != 0) {
/* some other encoding */
return iconv_convert_string("utf-8", text_encoding, utf8);
}
/* fallback */
return xstrdup(utf8);
}
/* Deliver the selection. Only supports XA_STRING. */
static Boolean
deliver_selection_cb(Widget w,
Atom *selection,
Atom *target,
Atom *type,
XtPointer *value,
unsigned long *length,
int *format)
{
Atom targets = fetch_atom(w, "TARGETS");
Atom utf8_string = fetch_atom(w, "UTF8_STRING");
TRACE_GUI((stderr, "selection target = %lu (%s)",
*target, XGetAtomName(DISP, *target)));
if (m_selection_text == NULL) /* paranoia */
return False;
#if HAVE_X11_XMU_XMU_H
if (*target == targets) {
/* TARGETS handling copied from xclipboard.c */
Atom* targetP;
XPointer std_targets; /* was: Atom* */
unsigned long std_length;
XSelectionRequestEvent* req = XtGetSelectionRequest(w, *selection, (XtRequestId)NULL);
TRACE_GUI((stderr, "Selection type: targets"));
XmuConvertStandardSelection(w, req->time, selection,
target, type, &std_targets, &std_length, format);
*value = XtMalloc(sizeof(Atom)*(std_length + 2));
targetP = *(Atom**)value;
*length = std_length + 2;
*targetP++ = XA_COMPOUND_TEXT(DISP);
*targetP++ = XA_STRING;
memcpy((char*)targetP, (char*)std_targets, sizeof(Atom)*std_length);
XtFree((char*)std_targets);
*type = XA_ATOM;
*format = sizeof(Atom) * 8;
return True;
}
else
#endif
{
if (*target == utf8_string) {
TRACE_GUI((stderr, "Selection type: UTF8_STRING"));
*type = *target;
*value = (XtPointer)XtNewString(m_selection_text);
/* *value = (XtPointer)m_selection_text; */
*length = strlen(m_selection_text);
*format = 8;
return True;
}
else if (*target == XA_STRING) {
char *ptr = utf8_to_native_encoding(m_selection_text);
TRACE_GUI((stderr, "Selection type: XA_STRING"));
strncpy(m_cvt_selection_text, ptr, m_selection_size);
m_cvt_selection_text[m_selection_size - 1] = '\0'; /* ensure termination */
free(ptr);
*type = *target;
*value = (XtPointer)XtNewString(m_cvt_selection_text);
/* *value = (XtPointer)m_selection_text; */
*length = strlen(m_cvt_selection_text);
*format = 8;
return True;
}
#if HAVE_X11_XMU_XMU_H
else if (*target == XA_COMPOUND_TEXT(DISP) || *target == XA_TEXT(DISP)) {
const char *cl[1];
char *ptr;
int retval;
XTextProperty ct;
XICCEncodingStyle style = XStdICCTextStyle;
TRACE_GUI((stderr, "Selection type: XA_COMPOUND_TEXT"));
ptr = utf8_to_native_encoding(m_selection_text);
strncpy(m_cvt_selection_text, ptr, m_selection_size);
m_cvt_selection_text[m_selection_size - 1] = '\0'; /* ensure termination */
cl[0] = m_cvt_selection_text;
*type = *target;
retval = XmbTextListToTextProperty(DISP, (char **)cl, 1, style, &ct);
if (retval == XNoMemory || retval == XLocaleNotSupported || retval == XConverterNotFound) {
statusline_info(STATUS_MEDIUM, "XmbTextListToTextProperty failed: %d", retval);
return False;
}
*value = ct.value;
*length = ct.nitems;
*format = 8;
return True;
}
#endif
else {
#if HAVE_X11_XMU_XMU_H
TRACE_GUI((stderr, "Selection type: standard selection"));
if (XmuConvertStandardSelection(w, CurrentTime, selection,
target, type, (XPointer *)value, length, format))
return True;
else {
#endif
TRACE_GUI((stderr, "Selection type unsupported: %lu (%s)",
(unsigned long)*target, XGetAtomName(DISP, *target)));
statusline_error(STATUS_MEDIUM,
"X client asked for an unsupported selection target type: %lu (%s)",
(unsigned long)*target, XGetAtomName(DISP, *target));
return False ;
#if HAVE_X11_XMU_XMU_H
}
#endif
}
}
}
/* do it */
Boolean
set_selection(const char *text, Widget w)
{
/* caller should make sure that text is never longer than 4 * XMaxRequestSize(DISP) - 32 */
if (m_selection_text == NULL) {
m_selection_size = 4 * XMaxRequestSize(DISP);
m_selection_text = xmalloc(m_selection_size);
m_cvt_selection_text = xmalloc(m_selection_size);
}
strncpy(m_selection_text, text, m_selection_size);
m_selection_text[m_selection_size - 1] = '\0'; /* ensure termination */
return XtOwnSelection(w, XA_PRIMARY, XtLastTimestampProcessed(XtDisplay(w)),
deliver_selection_cb,
lose_selection_cb,
(XtSelectionDoneProc)NULL);
}
void
unset_selection(Widget w)
{
XtDisownSelection(w, XA_PRIMARY, XtLastTimestampProcessed(XtDisplay(w)));
}
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