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578 |
markom |
/*
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* tkUnixSelect.c --
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*
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* This file contains X specific routines for manipulating
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* selections.
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*
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* Copyright (c) 1995 Sun Microsystems, Inc.
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*
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* See the file "license.terms" for information on usage and redistribution
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*
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* RCS: @(#) $Id: tkUnixSelect.c,v 1.1.1.1 2002-01-16 10:26:01 markom Exp $
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*/
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#include "tkInt.h"
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#include "tkSelect.h"
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/*
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* When handling INCR-style selection retrievals, the selection owner
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* uses the following data structure to communicate between the
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* ConvertSelection procedure and TkSelPropProc.
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*/
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typedef struct IncrInfo {
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TkWindow *winPtr; /* Window that owns selection. */
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Atom selection; /* Selection that is being retrieved. */
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Atom *multAtoms; /* Information about conversions to
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* perform: one or more pairs of
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* (target, property). This either
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* points to a retrieved property (for
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* MULTIPLE retrievals) or to a static
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* array. */
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unsigned long numConversions;
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/* Number of entries in offsets (same as
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* # of pairs in multAtoms). */
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int *offsets; /* One entry for each pair in
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* multAtoms; -1 means all data has
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* been transferred for this
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* conversion. -2 means only the
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* final zero-length transfer still
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* has to be done. Otherwise it is the
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* offset of the next chunk of data
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* to transfer. This array is malloc-ed. */
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int numIncrs; /* Number of entries in offsets that
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* aren't -1 (i.e. # of INCR-mode transfers
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* not yet completed). */
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Tcl_TimerToken timeout; /* Token for timer procedure. */
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int idleTime; /* Number of seconds since we heard
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* anything from the selection
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* requestor. */
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Window reqWindow; /* Requestor's window id. */
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Time time; /* Timestamp corresponding to
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* selection at beginning of request;
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* used to abort transfer if selection
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* changes. */
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struct IncrInfo *nextPtr; /* Next in list of all INCR-style
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* retrievals currently pending. */
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} IncrInfo;
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static IncrInfo *pendingIncrs = NULL;
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/* List of all incr structures
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* currently active. */
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/*
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* Largest property that we'll accept when sending or receiving the
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* selection:
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*/
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#define MAX_PROP_WORDS 100000
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static TkSelRetrievalInfo *pendingRetrievals = NULL;
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/* List of all retrievals currently
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* being waited for. */
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/*
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* Forward declarations for procedures defined in this file:
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*/
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static void ConvertSelection _ANSI_ARGS_((TkWindow *winPtr,
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XSelectionRequestEvent *eventPtr));
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static void IncrTimeoutProc _ANSI_ARGS_((ClientData clientData));
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static char * SelCvtFromX _ANSI_ARGS_((long *propPtr, int numValues,
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Atom type, Tk_Window tkwin));
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static long * SelCvtToX _ANSI_ARGS_((char *string, Atom type,
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Tk_Window tkwin, int *numLongsPtr));
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static int SelectionSize _ANSI_ARGS_((TkSelHandler *selPtr));
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static void SelRcvIncrProc _ANSI_ARGS_((ClientData clientData,
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XEvent *eventPtr));
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static void SelTimeoutProc _ANSI_ARGS_((ClientData clientData));
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/*
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*----------------------------------------------------------------------
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*
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* TkSelGetSelection --
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*
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* Retrieve the specified selection from another process.
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*
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* Results:
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* The return value is a standard Tcl return value.
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* If an error occurs (such as no selection exists)
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* then an error message is left in interp->result.
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*
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* Side effects:
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* None.
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*
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*----------------------------------------------------------------------
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*/
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int
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TkSelGetSelection(interp, tkwin, selection, target, proc, clientData)
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Tcl_Interp *interp; /* Interpreter to use for reporting
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* errors. */
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Tk_Window tkwin; /* Window on whose behalf to retrieve
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* the selection (determines display
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* from which to retrieve). */
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Atom selection; /* Selection to retrieve. */
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Atom target; /* Desired form in which selection
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* is to be returned. */
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Tk_GetSelProc *proc; /* Procedure to call to process the
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* selection, once it has been retrieved. */
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ClientData clientData; /* Arbitrary value to pass to proc. */
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{
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TkSelRetrievalInfo retr;
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TkWindow *winPtr = (TkWindow *) tkwin;
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TkDisplay *dispPtr = winPtr->dispPtr;
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/*
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* The selection is owned by some other process. To
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* retrieve it, first record information about the retrieval
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* in progress. Use an internal window as the requestor.
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*/
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retr.interp = interp;
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if (dispPtr->clipWindow == NULL) {
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int result;
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result = TkClipInit(interp, dispPtr);
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if (result != TCL_OK) {
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return result;
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}
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}
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retr.winPtr = (TkWindow *) dispPtr->clipWindow;
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retr.selection = selection;
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retr.property = selection;
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retr.target = target;
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retr.proc = proc;
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retr.clientData = clientData;
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retr.result = -1;
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retr.idleTime = 0;
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retr.nextPtr = pendingRetrievals;
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pendingRetrievals = &retr;
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/*
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* Initiate the request for the selection. Note: can't use
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* TkCurrentTime for the time. If we do, and this application hasn't
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* received any X events in a long time, the current time will be way
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* in the past and could even predate the time when the selection was
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* made; if this happens, the request will be rejected.
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*/
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XConvertSelection(winPtr->display, retr.selection, retr.target,
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retr.property, retr.winPtr->window, CurrentTime);
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/*
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* Enter a loop processing X events until the selection
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* has been retrieved and processed. If no response is
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* received within a few seconds, then timeout.
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*/
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retr.timeout = Tcl_CreateTimerHandler(1000, SelTimeoutProc,
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(ClientData) &retr);
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while (retr.result == -1) {
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Tcl_DoOneEvent(0);
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}
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Tcl_DeleteTimerHandler(retr.timeout);
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/*
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* Unregister the information about the selection retrieval
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* in progress.
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*/
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if (pendingRetrievals == &retr) {
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pendingRetrievals = retr.nextPtr;
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} else {
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TkSelRetrievalInfo *retrPtr;
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for (retrPtr = pendingRetrievals; retrPtr != NULL;
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retrPtr = retrPtr->nextPtr) {
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if (retrPtr->nextPtr == &retr) {
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retrPtr->nextPtr = retr.nextPtr;
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break;
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}
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}
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}
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return retr.result;
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}
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/*
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*----------------------------------------------------------------------
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*
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* TkSelPropProc --
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*
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* This procedure is invoked when property-change events
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* occur on windows not known to the toolkit. Its function
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* is to implement the sending side of the INCR selection
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* retrieval protocol when the selection requestor deletes
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* the property containing a part of the selection.
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*
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* Results:
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* None.
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*
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* Side effects:
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* If the property that is receiving the selection was just
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* deleted, then a new piece of the selection is fetched and
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* placed in the property, until eventually there's no more
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* selection to fetch.
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*
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*----------------------------------------------------------------------
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*/
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void
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TkSelPropProc(eventPtr)
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register XEvent *eventPtr; /* X PropertyChange event. */
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{
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register IncrInfo *incrPtr;
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int i, format;
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Atom target, formatType;
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register TkSelHandler *selPtr;
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long buffer[TK_SEL_WORDS_AT_ONCE];
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int numItems;
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char *propPtr;
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Tk_ErrorHandler errorHandler;
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/*
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* See if this event announces the deletion of a property being
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* used for an INCR transfer. If so, then add the next chunk of
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* data to the property.
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*/
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if (eventPtr->xproperty.state != PropertyDelete) {
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return;
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}
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for (incrPtr = pendingIncrs; incrPtr != NULL;
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incrPtr = incrPtr->nextPtr) {
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if (incrPtr->reqWindow != eventPtr->xproperty.window) {
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continue;
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}
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for (i = 0; i < incrPtr->numConversions; i++) {
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if ((eventPtr->xproperty.atom != incrPtr->multAtoms[2*i + 1])
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|| (incrPtr->offsets[i] == -1)){
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continue;
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}
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target = incrPtr->multAtoms[2*i];
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incrPtr->idleTime = 0;
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for (selPtr = incrPtr->winPtr->selHandlerList; ;
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selPtr = selPtr->nextPtr) {
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if (selPtr == NULL) {
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incrPtr->multAtoms[2*i + 1] = None;
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incrPtr->offsets[i] = -1;
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incrPtr->numIncrs --;
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return;
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}
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263 |
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if ((selPtr->target == target)
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&& (selPtr->selection == incrPtr->selection)) {
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formatType = selPtr->format;
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if (incrPtr->offsets[i] == -2) {
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numItems = 0;
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((char *) buffer)[0] = 0;
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} else {
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TkSelInProgress ip;
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ip.selPtr = selPtr;
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ip.nextPtr = pendingPtr;
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pendingPtr = &ip;
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numItems = (*selPtr->proc)(selPtr->clientData,
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incrPtr->offsets[i], (char *) buffer,
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TK_SEL_BYTES_AT_ONCE);
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pendingPtr = ip.nextPtr;
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278 |
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if (ip.selPtr == NULL) {
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279 |
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/*
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280 |
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* The selection handler deleted itself.
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*/
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282 |
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return;
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284 |
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}
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285 |
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if (numItems > TK_SEL_BYTES_AT_ONCE) {
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286 |
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panic("selection handler returned too many bytes");
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287 |
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} else {
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288 |
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if (numItems < 0) {
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289 |
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numItems = 0;
|
290 |
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}
|
291 |
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}
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292 |
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((char *) buffer)[numItems] = '\0';
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293 |
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}
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294 |
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if (numItems < TK_SEL_BYTES_AT_ONCE) {
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295 |
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if (numItems <= 0) {
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296 |
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incrPtr->offsets[i] = -1;
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297 |
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incrPtr->numIncrs--;
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298 |
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} else {
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299 |
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incrPtr->offsets[i] = -2;
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300 |
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}
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301 |
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} else {
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302 |
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incrPtr->offsets[i] += numItems;
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303 |
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}
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304 |
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if (formatType == XA_STRING) {
|
305 |
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propPtr = (char *) buffer;
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306 |
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format = 8;
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307 |
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} else {
|
308 |
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propPtr = (char *) SelCvtToX((char *) buffer,
|
309 |
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formatType, (Tk_Window) incrPtr->winPtr,
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310 |
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&numItems);
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311 |
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format = 32;
|
312 |
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}
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313 |
|
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errorHandler = Tk_CreateErrorHandler(
|
314 |
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eventPtr->xproperty.display, -1, -1, -1,
|
315 |
|
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(int (*)()) NULL, (ClientData) NULL);
|
316 |
|
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XChangeProperty(eventPtr->xproperty.display,
|
317 |
|
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eventPtr->xproperty.window,
|
318 |
|
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eventPtr->xproperty.atom, formatType,
|
319 |
|
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format, PropModeReplace,
|
320 |
|
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(unsigned char *) propPtr, numItems);
|
321 |
|
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Tk_DeleteErrorHandler(errorHandler);
|
322 |
|
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if (propPtr != (char *) buffer) {
|
323 |
|
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ckfree(propPtr);
|
324 |
|
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}
|
325 |
|
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return;
|
326 |
|
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}
|
327 |
|
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}
|
328 |
|
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}
|
329 |
|
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}
|
330 |
|
|
}
|
331 |
|
|
|
332 |
|
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/*
|
333 |
|
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*--------------------------------------------------------------
|
334 |
|
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*
|
335 |
|
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* TkSelEventProc --
|
336 |
|
|
*
|
337 |
|
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* This procedure is invoked whenever a selection-related
|
338 |
|
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* event occurs. It does the lion's share of the work
|
339 |
|
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* in implementing the selection protocol.
|
340 |
|
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*
|
341 |
|
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* Results:
|
342 |
|
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* None.
|
343 |
|
|
*
|
344 |
|
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* Side effects:
|
345 |
|
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* Lots: depends on the type of event.
|
346 |
|
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*
|
347 |
|
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*--------------------------------------------------------------
|
348 |
|
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*/
|
349 |
|
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|
350 |
|
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void
|
351 |
|
|
TkSelEventProc(tkwin, eventPtr)
|
352 |
|
|
Tk_Window tkwin; /* Window for which event was
|
353 |
|
|
* targeted. */
|
354 |
|
|
register XEvent *eventPtr; /* X event: either SelectionClear,
|
355 |
|
|
* SelectionRequest, or
|
356 |
|
|
* SelectionNotify. */
|
357 |
|
|
{
|
358 |
|
|
register TkWindow *winPtr = (TkWindow *) tkwin;
|
359 |
|
|
TkDisplay *dispPtr = winPtr->dispPtr;
|
360 |
|
|
Tcl_Interp *interp;
|
361 |
|
|
|
362 |
|
|
/*
|
363 |
|
|
* Case #1: SelectionClear events.
|
364 |
|
|
*/
|
365 |
|
|
|
366 |
|
|
if (eventPtr->type == SelectionClear) {
|
367 |
|
|
TkSelClearSelection(tkwin, eventPtr);
|
368 |
|
|
}
|
369 |
|
|
|
370 |
|
|
/*
|
371 |
|
|
* Case #2: SelectionNotify events. Call the relevant procedure
|
372 |
|
|
* to handle the incoming selection.
|
373 |
|
|
*/
|
374 |
|
|
|
375 |
|
|
if (eventPtr->type == SelectionNotify) {
|
376 |
|
|
register TkSelRetrievalInfo *retrPtr;
|
377 |
|
|
char *propInfo;
|
378 |
|
|
Atom type;
|
379 |
|
|
int format, result;
|
380 |
|
|
unsigned long numItems, bytesAfter;
|
381 |
|
|
|
382 |
|
|
for (retrPtr = pendingRetrievals; ; retrPtr = retrPtr->nextPtr) {
|
383 |
|
|
if (retrPtr == NULL) {
|
384 |
|
|
return;
|
385 |
|
|
}
|
386 |
|
|
if ((retrPtr->winPtr == winPtr)
|
387 |
|
|
&& (retrPtr->selection == eventPtr->xselection.selection)
|
388 |
|
|
&& (retrPtr->target == eventPtr->xselection.target)
|
389 |
|
|
&& (retrPtr->result == -1)) {
|
390 |
|
|
if (retrPtr->property == eventPtr->xselection.property) {
|
391 |
|
|
break;
|
392 |
|
|
}
|
393 |
|
|
if (eventPtr->xselection.property == None) {
|
394 |
|
|
Tcl_SetResult(retrPtr->interp, (char *) NULL, TCL_STATIC);
|
395 |
|
|
Tcl_AppendResult(retrPtr->interp,
|
396 |
|
|
Tk_GetAtomName(tkwin, retrPtr->selection),
|
397 |
|
|
" selection doesn't exist or form \"",
|
398 |
|
|
Tk_GetAtomName(tkwin, retrPtr->target),
|
399 |
|
|
"\" not defined", (char *) NULL);
|
400 |
|
|
retrPtr->result = TCL_ERROR;
|
401 |
|
|
return;
|
402 |
|
|
}
|
403 |
|
|
}
|
404 |
|
|
}
|
405 |
|
|
|
406 |
|
|
propInfo = NULL;
|
407 |
|
|
result = XGetWindowProperty(eventPtr->xselection.display,
|
408 |
|
|
eventPtr->xselection.requestor, retrPtr->property,
|
409 |
|
|
0, MAX_PROP_WORDS, False, (Atom) AnyPropertyType,
|
410 |
|
|
&type, &format, &numItems, &bytesAfter,
|
411 |
|
|
(unsigned char **) &propInfo);
|
412 |
|
|
if ((result != Success) || (type == None)) {
|
413 |
|
|
return;
|
414 |
|
|
}
|
415 |
|
|
if (bytesAfter != 0) {
|
416 |
|
|
Tcl_SetResult(retrPtr->interp, "selection property too large",
|
417 |
|
|
TCL_STATIC);
|
418 |
|
|
retrPtr->result = TCL_ERROR;
|
419 |
|
|
XFree(propInfo);
|
420 |
|
|
return;
|
421 |
|
|
}
|
422 |
|
|
if ((type == XA_STRING) || (type == dispPtr->textAtom)
|
423 |
|
|
|| (type == dispPtr->compoundTextAtom)) {
|
424 |
|
|
if (format != 8) {
|
425 |
|
|
sprintf(retrPtr->interp->result,
|
426 |
|
|
"bad format for string selection: wanted \"8\", got \"%d\"",
|
427 |
|
|
format);
|
428 |
|
|
retrPtr->result = TCL_ERROR;
|
429 |
|
|
return;
|
430 |
|
|
}
|
431 |
|
|
interp = retrPtr->interp;
|
432 |
|
|
Tcl_Preserve((ClientData) interp);
|
433 |
|
|
retrPtr->result = (*retrPtr->proc)(retrPtr->clientData,
|
434 |
|
|
interp, propInfo);
|
435 |
|
|
Tcl_Release((ClientData) interp);
|
436 |
|
|
} else if (type == dispPtr->incrAtom) {
|
437 |
|
|
|
438 |
|
|
/*
|
439 |
|
|
* It's a !?#@!?!! INCR-style reception. Arrange to receive
|
440 |
|
|
* the selection in pieces, using the ICCCM protocol, then
|
441 |
|
|
* hang around until either the selection is all here or a
|
442 |
|
|
* timeout occurs.
|
443 |
|
|
*/
|
444 |
|
|
|
445 |
|
|
retrPtr->idleTime = 0;
|
446 |
|
|
Tk_CreateEventHandler(tkwin, PropertyChangeMask, SelRcvIncrProc,
|
447 |
|
|
(ClientData) retrPtr);
|
448 |
|
|
XDeleteProperty(Tk_Display(tkwin), Tk_WindowId(tkwin),
|
449 |
|
|
retrPtr->property);
|
450 |
|
|
while (retrPtr->result == -1) {
|
451 |
|
|
Tcl_DoOneEvent(0);
|
452 |
|
|
}
|
453 |
|
|
Tk_DeleteEventHandler(tkwin, PropertyChangeMask, SelRcvIncrProc,
|
454 |
|
|
(ClientData) retrPtr);
|
455 |
|
|
} else {
|
456 |
|
|
char *string;
|
457 |
|
|
|
458 |
|
|
if (format != 32) {
|
459 |
|
|
sprintf(retrPtr->interp->result,
|
460 |
|
|
"bad format for selection: wanted \"32\", got \"%d\"",
|
461 |
|
|
format);
|
462 |
|
|
retrPtr->result = TCL_ERROR;
|
463 |
|
|
return;
|
464 |
|
|
}
|
465 |
|
|
string = SelCvtFromX((long *) propInfo, (int) numItems, type,
|
466 |
|
|
(Tk_Window) winPtr);
|
467 |
|
|
interp = retrPtr->interp;
|
468 |
|
|
Tcl_Preserve((ClientData) interp);
|
469 |
|
|
retrPtr->result = (*retrPtr->proc)(retrPtr->clientData,
|
470 |
|
|
interp, string);
|
471 |
|
|
Tcl_Release((ClientData) interp);
|
472 |
|
|
ckfree(string);
|
473 |
|
|
}
|
474 |
|
|
XFree(propInfo);
|
475 |
|
|
return;
|
476 |
|
|
}
|
477 |
|
|
|
478 |
|
|
/*
|
479 |
|
|
* Case #3: SelectionRequest events. Call ConvertSelection to
|
480 |
|
|
* do the dirty work.
|
481 |
|
|
*/
|
482 |
|
|
|
483 |
|
|
if (eventPtr->type == SelectionRequest) {
|
484 |
|
|
ConvertSelection(winPtr, &eventPtr->xselectionrequest);
|
485 |
|
|
return;
|
486 |
|
|
}
|
487 |
|
|
}
|
488 |
|
|
|
489 |
|
|
/*
|
490 |
|
|
*----------------------------------------------------------------------
|
491 |
|
|
*
|
492 |
|
|
* SelTimeoutProc --
|
493 |
|
|
*
|
494 |
|
|
* This procedure is invoked once every second while waiting for
|
495 |
|
|
* the selection to be returned. After a while it gives up and
|
496 |
|
|
* aborts the selection retrieval.
|
497 |
|
|
*
|
498 |
|
|
* Results:
|
499 |
|
|
* None.
|
500 |
|
|
*
|
501 |
|
|
* Side effects:
|
502 |
|
|
* A new timer callback is created to call us again in another
|
503 |
|
|
* second, unless time has expired, in which case an error is
|
504 |
|
|
* recorded for the retrieval.
|
505 |
|
|
*
|
506 |
|
|
*----------------------------------------------------------------------
|
507 |
|
|
*/
|
508 |
|
|
|
509 |
|
|
static void
|
510 |
|
|
SelTimeoutProc(clientData)
|
511 |
|
|
ClientData clientData; /* Information about retrieval
|
512 |
|
|
* in progress. */
|
513 |
|
|
{
|
514 |
|
|
register TkSelRetrievalInfo *retrPtr = (TkSelRetrievalInfo *) clientData;
|
515 |
|
|
|
516 |
|
|
/*
|
517 |
|
|
* Make sure that the retrieval is still in progress. Then
|
518 |
|
|
* see how long it's been since any sort of response was received
|
519 |
|
|
* from the other side.
|
520 |
|
|
*/
|
521 |
|
|
|
522 |
|
|
if (retrPtr->result != -1) {
|
523 |
|
|
return;
|
524 |
|
|
}
|
525 |
|
|
retrPtr->idleTime++;
|
526 |
|
|
if (retrPtr->idleTime >= 5) {
|
527 |
|
|
|
528 |
|
|
/*
|
529 |
|
|
* Use a careful procedure to store the error message, because
|
530 |
|
|
* the result could already be partially filled in with a partial
|
531 |
|
|
* selection return.
|
532 |
|
|
*/
|
533 |
|
|
|
534 |
|
|
Tcl_SetResult(retrPtr->interp, "selection owner didn't respond",
|
535 |
|
|
TCL_STATIC);
|
536 |
|
|
retrPtr->result = TCL_ERROR;
|
537 |
|
|
} else {
|
538 |
|
|
retrPtr->timeout = Tcl_CreateTimerHandler(1000, SelTimeoutProc,
|
539 |
|
|
(ClientData) retrPtr);
|
540 |
|
|
}
|
541 |
|
|
}
|
542 |
|
|
|
543 |
|
|
/*
|
544 |
|
|
*----------------------------------------------------------------------
|
545 |
|
|
*
|
546 |
|
|
* ConvertSelection --
|
547 |
|
|
*
|
548 |
|
|
* This procedure is invoked to handle SelectionRequest events.
|
549 |
|
|
* It responds to the requests, obeying the ICCCM protocols.
|
550 |
|
|
*
|
551 |
|
|
* Results:
|
552 |
|
|
* None.
|
553 |
|
|
*
|
554 |
|
|
* Side effects:
|
555 |
|
|
* Properties are created for the selection requestor, and a
|
556 |
|
|
* SelectionNotify event is generated for the selection
|
557 |
|
|
* requestor. In the event of long selections, this procedure
|
558 |
|
|
* implements INCR-mode transfers, using the ICCCM protocol.
|
559 |
|
|
*
|
560 |
|
|
*----------------------------------------------------------------------
|
561 |
|
|
*/
|
562 |
|
|
|
563 |
|
|
static void
|
564 |
|
|
ConvertSelection(winPtr, eventPtr)
|
565 |
|
|
TkWindow *winPtr; /* Window that received the
|
566 |
|
|
* conversion request; may not be
|
567 |
|
|
* selection's current owner, be we
|
568 |
|
|
* set it to the current owner. */
|
569 |
|
|
register XSelectionRequestEvent *eventPtr;
|
570 |
|
|
/* Event describing request. */
|
571 |
|
|
{
|
572 |
|
|
XSelectionEvent reply; /* Used to notify requestor that
|
573 |
|
|
* selection info is ready. */
|
574 |
|
|
int multiple; /* Non-zero means a MULTIPLE request
|
575 |
|
|
* is being handled. */
|
576 |
|
|
IncrInfo incr; /* State of selection conversion. */
|
577 |
|
|
Atom singleInfo[2]; /* incr.multAtoms points here except
|
578 |
|
|
* for multiple conversions. */
|
579 |
|
|
int i;
|
580 |
|
|
Tk_ErrorHandler errorHandler;
|
581 |
|
|
TkSelectionInfo *infoPtr;
|
582 |
|
|
TkSelInProgress ip;
|
583 |
|
|
|
584 |
|
|
errorHandler = Tk_CreateErrorHandler(eventPtr->display, -1, -1,-1,
|
585 |
|
|
(int (*)()) NULL, (ClientData) NULL);
|
586 |
|
|
|
587 |
|
|
/*
|
588 |
|
|
* Initialize the reply event.
|
589 |
|
|
*/
|
590 |
|
|
|
591 |
|
|
reply.type = SelectionNotify;
|
592 |
|
|
reply.serial = 0;
|
593 |
|
|
reply.send_event = True;
|
594 |
|
|
reply.display = eventPtr->display;
|
595 |
|
|
reply.requestor = eventPtr->requestor;
|
596 |
|
|
reply.selection = eventPtr->selection;
|
597 |
|
|
reply.target = eventPtr->target;
|
598 |
|
|
reply.property = eventPtr->property;
|
599 |
|
|
if (reply.property == None) {
|
600 |
|
|
reply.property = reply.target;
|
601 |
|
|
}
|
602 |
|
|
reply.time = eventPtr->time;
|
603 |
|
|
|
604 |
|
|
for (infoPtr = winPtr->dispPtr->selectionInfoPtr; infoPtr != NULL;
|
605 |
|
|
infoPtr = infoPtr->nextPtr) {
|
606 |
|
|
if (infoPtr->selection == eventPtr->selection)
|
607 |
|
|
break;
|
608 |
|
|
}
|
609 |
|
|
if (infoPtr == NULL) {
|
610 |
|
|
goto refuse;
|
611 |
|
|
}
|
612 |
|
|
winPtr = (TkWindow *) infoPtr->owner;
|
613 |
|
|
|
614 |
|
|
/*
|
615 |
|
|
* Figure out which kind(s) of conversion to perform. If handling
|
616 |
|
|
* a MULTIPLE conversion, then read the property describing which
|
617 |
|
|
* conversions to perform.
|
618 |
|
|
*/
|
619 |
|
|
|
620 |
|
|
incr.winPtr = winPtr;
|
621 |
|
|
incr.selection = eventPtr->selection;
|
622 |
|
|
if (eventPtr->target != winPtr->dispPtr->multipleAtom) {
|
623 |
|
|
multiple = 0;
|
624 |
|
|
singleInfo[0] = reply.target;
|
625 |
|
|
singleInfo[1] = reply.property;
|
626 |
|
|
incr.multAtoms = singleInfo;
|
627 |
|
|
incr.numConversions = 1;
|
628 |
|
|
} else {
|
629 |
|
|
Atom type;
|
630 |
|
|
int format, result;
|
631 |
|
|
unsigned long bytesAfter;
|
632 |
|
|
|
633 |
|
|
multiple = 1;
|
634 |
|
|
incr.multAtoms = NULL;
|
635 |
|
|
if (eventPtr->property == None) {
|
636 |
|
|
goto refuse;
|
637 |
|
|
}
|
638 |
|
|
result = XGetWindowProperty(eventPtr->display,
|
639 |
|
|
eventPtr->requestor, eventPtr->property,
|
640 |
|
|
0, MAX_PROP_WORDS, False, XA_ATOM,
|
641 |
|
|
&type, &format, &incr.numConversions, &bytesAfter,
|
642 |
|
|
(unsigned char **) &incr.multAtoms);
|
643 |
|
|
if ((result != Success) || (bytesAfter != 0) || (format != 32)
|
644 |
|
|
|| (type == None)) {
|
645 |
|
|
if (incr.multAtoms != NULL) {
|
646 |
|
|
XFree((char *) incr.multAtoms);
|
647 |
|
|
}
|
648 |
|
|
goto refuse;
|
649 |
|
|
}
|
650 |
|
|
incr.numConversions /= 2; /* Two atoms per conversion. */
|
651 |
|
|
}
|
652 |
|
|
|
653 |
|
|
/*
|
654 |
|
|
* Loop through all of the requested conversions, and either return
|
655 |
|
|
* the entire converted selection, if it can be returned in a single
|
656 |
|
|
* bunch, or return INCR information only (the actual selection will
|
657 |
|
|
* be returned below).
|
658 |
|
|
*/
|
659 |
|
|
|
660 |
|
|
incr.offsets = (int *) ckalloc((unsigned)
|
661 |
|
|
(incr.numConversions*sizeof(int)));
|
662 |
|
|
incr.numIncrs = 0;
|
663 |
|
|
for (i = 0; i < incr.numConversions; i++) {
|
664 |
|
|
Atom target, property, type;
|
665 |
|
|
long buffer[TK_SEL_WORDS_AT_ONCE];
|
666 |
|
|
register TkSelHandler *selPtr;
|
667 |
|
|
int numItems, format;
|
668 |
|
|
char *propPtr;
|
669 |
|
|
|
670 |
|
|
target = incr.multAtoms[2*i];
|
671 |
|
|
property = incr.multAtoms[2*i + 1];
|
672 |
|
|
incr.offsets[i] = -1;
|
673 |
|
|
|
674 |
|
|
for (selPtr = winPtr->selHandlerList; selPtr != NULL;
|
675 |
|
|
selPtr = selPtr->nextPtr) {
|
676 |
|
|
if ((selPtr->target == target)
|
677 |
|
|
&& (selPtr->selection == eventPtr->selection)) {
|
678 |
|
|
break;
|
679 |
|
|
}
|
680 |
|
|
}
|
681 |
|
|
|
682 |
|
|
if (selPtr == NULL) {
|
683 |
|
|
/*
|
684 |
|
|
* Nobody seems to know about this kind of request. If
|
685 |
|
|
* it's of a sort that we can handle without any help, do
|
686 |
|
|
* it. Otherwise mark the request as an errror.
|
687 |
|
|
*/
|
688 |
|
|
|
689 |
|
|
numItems = TkSelDefaultSelection(infoPtr, target, (char *) buffer,
|
690 |
|
|
TK_SEL_BYTES_AT_ONCE, &type);
|
691 |
|
|
if (numItems < 0) {
|
692 |
|
|
incr.multAtoms[2*i + 1] = None;
|
693 |
|
|
continue;
|
694 |
|
|
}
|
695 |
|
|
} else {
|
696 |
|
|
ip.selPtr = selPtr;
|
697 |
|
|
ip.nextPtr = pendingPtr;
|
698 |
|
|
pendingPtr = &ip;
|
699 |
|
|
type = selPtr->format;
|
700 |
|
|
numItems = (*selPtr->proc)(selPtr->clientData, 0,
|
701 |
|
|
(char *) buffer, TK_SEL_BYTES_AT_ONCE);
|
702 |
|
|
pendingPtr = ip.nextPtr;
|
703 |
|
|
if ((ip.selPtr == NULL) || (numItems < 0)) {
|
704 |
|
|
incr.multAtoms[2*i + 1] = None;
|
705 |
|
|
continue;
|
706 |
|
|
}
|
707 |
|
|
if (numItems > TK_SEL_BYTES_AT_ONCE) {
|
708 |
|
|
panic("selection handler returned too many bytes");
|
709 |
|
|
}
|
710 |
|
|
((char *) buffer)[numItems] = '\0';
|
711 |
|
|
}
|
712 |
|
|
|
713 |
|
|
/*
|
714 |
|
|
* Got the selection; store it back on the requestor's property.
|
715 |
|
|
*/
|
716 |
|
|
|
717 |
|
|
if (numItems == TK_SEL_BYTES_AT_ONCE) {
|
718 |
|
|
/*
|
719 |
|
|
* Selection is too big to send at once; start an
|
720 |
|
|
* INCR-mode transfer.
|
721 |
|
|
*/
|
722 |
|
|
|
723 |
|
|
incr.numIncrs++;
|
724 |
|
|
type = winPtr->dispPtr->incrAtom;
|
725 |
|
|
buffer[0] = SelectionSize(selPtr);
|
726 |
|
|
if (buffer[0] == 0) {
|
727 |
|
|
incr.multAtoms[2*i + 1] = None;
|
728 |
|
|
continue;
|
729 |
|
|
}
|
730 |
|
|
numItems = 1;
|
731 |
|
|
propPtr = (char *) buffer;
|
732 |
|
|
format = 32;
|
733 |
|
|
incr.offsets[i] = 0;
|
734 |
|
|
} else if (type == XA_STRING) {
|
735 |
|
|
propPtr = (char *) buffer;
|
736 |
|
|
format = 8;
|
737 |
|
|
} else {
|
738 |
|
|
propPtr = (char *) SelCvtToX((char *) buffer,
|
739 |
|
|
type, (Tk_Window) winPtr, &numItems);
|
740 |
|
|
format = 32;
|
741 |
|
|
}
|
742 |
|
|
XChangeProperty(reply.display, reply.requestor,
|
743 |
|
|
property, type, format, PropModeReplace,
|
744 |
|
|
(unsigned char *) propPtr, numItems);
|
745 |
|
|
if (propPtr != (char *) buffer) {
|
746 |
|
|
ckfree(propPtr);
|
747 |
|
|
}
|
748 |
|
|
}
|
749 |
|
|
|
750 |
|
|
/*
|
751 |
|
|
* Send an event back to the requestor to indicate that the
|
752 |
|
|
* first stage of conversion is complete (everything is done
|
753 |
|
|
* except for long conversions that have to be done in INCR
|
754 |
|
|
* mode).
|
755 |
|
|
*/
|
756 |
|
|
|
757 |
|
|
if (incr.numIncrs > 0) {
|
758 |
|
|
XSelectInput(reply.display, reply.requestor, PropertyChangeMask);
|
759 |
|
|
incr.timeout = Tcl_CreateTimerHandler(1000, IncrTimeoutProc,
|
760 |
|
|
(ClientData) &incr);
|
761 |
|
|
incr.idleTime = 0;
|
762 |
|
|
incr.reqWindow = reply.requestor;
|
763 |
|
|
incr.time = infoPtr->time;
|
764 |
|
|
incr.nextPtr = pendingIncrs;
|
765 |
|
|
pendingIncrs = &incr;
|
766 |
|
|
}
|
767 |
|
|
if (multiple) {
|
768 |
|
|
XChangeProperty(reply.display, reply.requestor, reply.property,
|
769 |
|
|
XA_ATOM, 32, PropModeReplace,
|
770 |
|
|
(unsigned char *) incr.multAtoms,
|
771 |
|
|
(int) incr.numConversions*2);
|
772 |
|
|
} else {
|
773 |
|
|
|
774 |
|
|
/*
|
775 |
|
|
* Not a MULTIPLE request. The first property in "multAtoms"
|
776 |
|
|
* got set to None if there was an error in conversion.
|
777 |
|
|
*/
|
778 |
|
|
|
779 |
|
|
reply.property = incr.multAtoms[1];
|
780 |
|
|
}
|
781 |
|
|
XSendEvent(reply.display, reply.requestor, False, 0, (XEvent *) &reply);
|
782 |
|
|
Tk_DeleteErrorHandler(errorHandler);
|
783 |
|
|
|
784 |
|
|
/*
|
785 |
|
|
* Handle any remaining INCR-mode transfers. This all happens
|
786 |
|
|
* in callbacks to TkSelPropProc, so just wait until the number
|
787 |
|
|
* of uncompleted INCR transfers drops to zero.
|
788 |
|
|
*/
|
789 |
|
|
|
790 |
|
|
if (incr.numIncrs > 0) {
|
791 |
|
|
IncrInfo *incrPtr2;
|
792 |
|
|
|
793 |
|
|
while (incr.numIncrs > 0) {
|
794 |
|
|
Tcl_DoOneEvent(0);
|
795 |
|
|
}
|
796 |
|
|
Tcl_DeleteTimerHandler(incr.timeout);
|
797 |
|
|
errorHandler = Tk_CreateErrorHandler(winPtr->display,
|
798 |
|
|
-1, -1,-1, (int (*)()) NULL, (ClientData) NULL);
|
799 |
|
|
XSelectInput(reply.display, reply.requestor, 0L);
|
800 |
|
|
Tk_DeleteErrorHandler(errorHandler);
|
801 |
|
|
if (pendingIncrs == &incr) {
|
802 |
|
|
pendingIncrs = incr.nextPtr;
|
803 |
|
|
} else {
|
804 |
|
|
for (incrPtr2 = pendingIncrs; incrPtr2 != NULL;
|
805 |
|
|
incrPtr2 = incrPtr2->nextPtr) {
|
806 |
|
|
if (incrPtr2->nextPtr == &incr) {
|
807 |
|
|
incrPtr2->nextPtr = incr.nextPtr;
|
808 |
|
|
break;
|
809 |
|
|
}
|
810 |
|
|
}
|
811 |
|
|
}
|
812 |
|
|
}
|
813 |
|
|
|
814 |
|
|
/*
|
815 |
|
|
* All done. Cleanup and return.
|
816 |
|
|
*/
|
817 |
|
|
|
818 |
|
|
ckfree((char *) incr.offsets);
|
819 |
|
|
if (multiple) {
|
820 |
|
|
XFree((char *) incr.multAtoms);
|
821 |
|
|
}
|
822 |
|
|
return;
|
823 |
|
|
|
824 |
|
|
/*
|
825 |
|
|
* An error occurred. Send back a refusal message.
|
826 |
|
|
*/
|
827 |
|
|
|
828 |
|
|
refuse:
|
829 |
|
|
reply.property = None;
|
830 |
|
|
XSendEvent(reply.display, reply.requestor, False, 0, (XEvent *) &reply);
|
831 |
|
|
Tk_DeleteErrorHandler(errorHandler);
|
832 |
|
|
return;
|
833 |
|
|
}
|
834 |
|
|
|
835 |
|
|
/*
|
836 |
|
|
*----------------------------------------------------------------------
|
837 |
|
|
*
|
838 |
|
|
* SelRcvIncrProc --
|
839 |
|
|
*
|
840 |
|
|
* This procedure handles the INCR protocol on the receiving
|
841 |
|
|
* side. It is invoked in response to property changes on
|
842 |
|
|
* the requestor's window (which hopefully are because a new
|
843 |
|
|
* chunk of the selection arrived).
|
844 |
|
|
*
|
845 |
|
|
* Results:
|
846 |
|
|
* None.
|
847 |
|
|
*
|
848 |
|
|
* Side effects:
|
849 |
|
|
* If a new piece of selection has arrived, a procedure is
|
850 |
|
|
* invoked to deal with that piece. When the whole selection
|
851 |
|
|
* is here, a flag is left for the higher-level procedure that
|
852 |
|
|
* initiated the selection retrieval.
|
853 |
|
|
*
|
854 |
|
|
*----------------------------------------------------------------------
|
855 |
|
|
*/
|
856 |
|
|
|
857 |
|
|
static void
|
858 |
|
|
SelRcvIncrProc(clientData, eventPtr)
|
859 |
|
|
ClientData clientData; /* Information about retrieval. */
|
860 |
|
|
register XEvent *eventPtr; /* X PropertyChange event. */
|
861 |
|
|
{
|
862 |
|
|
register TkSelRetrievalInfo *retrPtr = (TkSelRetrievalInfo *) clientData;
|
863 |
|
|
char *propInfo;
|
864 |
|
|
Atom type;
|
865 |
|
|
int format, result;
|
866 |
|
|
unsigned long numItems, bytesAfter;
|
867 |
|
|
Tcl_Interp *interp;
|
868 |
|
|
|
869 |
|
|
if ((eventPtr->xproperty.atom != retrPtr->property)
|
870 |
|
|
|| (eventPtr->xproperty.state != PropertyNewValue)
|
871 |
|
|
|| (retrPtr->result != -1)) {
|
872 |
|
|
return;
|
873 |
|
|
}
|
874 |
|
|
propInfo = NULL;
|
875 |
|
|
result = XGetWindowProperty(eventPtr->xproperty.display,
|
876 |
|
|
eventPtr->xproperty.window, retrPtr->property, 0, MAX_PROP_WORDS,
|
877 |
|
|
True, (Atom) AnyPropertyType, &type, &format, &numItems,
|
878 |
|
|
&bytesAfter, (unsigned char **) &propInfo);
|
879 |
|
|
if ((result != Success) || (type == None)) {
|
880 |
|
|
return;
|
881 |
|
|
}
|
882 |
|
|
if (bytesAfter != 0) {
|
883 |
|
|
Tcl_SetResult(retrPtr->interp, "selection property too large",
|
884 |
|
|
TCL_STATIC);
|
885 |
|
|
retrPtr->result = TCL_ERROR;
|
886 |
|
|
goto done;
|
887 |
|
|
}
|
888 |
|
|
if (numItems == 0) {
|
889 |
|
|
retrPtr->result = TCL_OK;
|
890 |
|
|
} else if ((type == XA_STRING)
|
891 |
|
|
|| (type == retrPtr->winPtr->dispPtr->textAtom)
|
892 |
|
|
|| (type == retrPtr->winPtr->dispPtr->compoundTextAtom)) {
|
893 |
|
|
if (format != 8) {
|
894 |
|
|
Tcl_SetResult(retrPtr->interp, (char *) NULL, TCL_STATIC);
|
895 |
|
|
sprintf(retrPtr->interp->result,
|
896 |
|
|
"bad format for string selection: wanted \"8\", got \"%d\"",
|
897 |
|
|
format);
|
898 |
|
|
retrPtr->result = TCL_ERROR;
|
899 |
|
|
goto done;
|
900 |
|
|
}
|
901 |
|
|
interp = retrPtr->interp;
|
902 |
|
|
Tcl_Preserve((ClientData) interp);
|
903 |
|
|
result = (*retrPtr->proc)(retrPtr->clientData, interp, propInfo);
|
904 |
|
|
Tcl_Release((ClientData) interp);
|
905 |
|
|
if (result != TCL_OK) {
|
906 |
|
|
retrPtr->result = result;
|
907 |
|
|
}
|
908 |
|
|
} else {
|
909 |
|
|
char *string;
|
910 |
|
|
|
911 |
|
|
if (format != 32) {
|
912 |
|
|
Tcl_SetResult(retrPtr->interp, (char *) NULL, TCL_STATIC);
|
913 |
|
|
sprintf(retrPtr->interp->result,
|
914 |
|
|
"bad format for selection: wanted \"32\", got \"%d\"",
|
915 |
|
|
format);
|
916 |
|
|
retrPtr->result = TCL_ERROR;
|
917 |
|
|
goto done;
|
918 |
|
|
}
|
919 |
|
|
string = SelCvtFromX((long *) propInfo, (int) numItems, type,
|
920 |
|
|
(Tk_Window) retrPtr->winPtr);
|
921 |
|
|
interp = retrPtr->interp;
|
922 |
|
|
Tcl_Preserve((ClientData) interp);
|
923 |
|
|
result = (*retrPtr->proc)(retrPtr->clientData, interp, string);
|
924 |
|
|
Tcl_Release((ClientData) interp);
|
925 |
|
|
if (result != TCL_OK) {
|
926 |
|
|
retrPtr->result = result;
|
927 |
|
|
}
|
928 |
|
|
ckfree(string);
|
929 |
|
|
}
|
930 |
|
|
|
931 |
|
|
done:
|
932 |
|
|
XFree(propInfo);
|
933 |
|
|
retrPtr->idleTime = 0;
|
934 |
|
|
}
|
935 |
|
|
|
936 |
|
|
/*
|
937 |
|
|
*----------------------------------------------------------------------
|
938 |
|
|
*
|
939 |
|
|
* SelectionSize --
|
940 |
|
|
*
|
941 |
|
|
* This procedure is called when the selection is too large to
|
942 |
|
|
* send in a single buffer; it computes the total length of
|
943 |
|
|
* the selection in bytes.
|
944 |
|
|
*
|
945 |
|
|
* Results:
|
946 |
|
|
* The return value is the number of bytes in the selection
|
947 |
|
|
* given by selPtr.
|
948 |
|
|
*
|
949 |
|
|
* Side effects:
|
950 |
|
|
* The selection is retrieved from its current owner (this is
|
951 |
|
|
* the only way to compute its size).
|
952 |
|
|
*
|
953 |
|
|
*----------------------------------------------------------------------
|
954 |
|
|
*/
|
955 |
|
|
|
956 |
|
|
static int
|
957 |
|
|
SelectionSize(selPtr)
|
958 |
|
|
TkSelHandler *selPtr; /* Information about how to retrieve
|
959 |
|
|
* the selection whose size is wanted. */
|
960 |
|
|
{
|
961 |
|
|
char buffer[TK_SEL_BYTES_AT_ONCE+1];
|
962 |
|
|
int size, chunkSize;
|
963 |
|
|
TkSelInProgress ip;
|
964 |
|
|
|
965 |
|
|
size = TK_SEL_BYTES_AT_ONCE;
|
966 |
|
|
ip.selPtr = selPtr;
|
967 |
|
|
ip.nextPtr = pendingPtr;
|
968 |
|
|
pendingPtr = &ip;
|
969 |
|
|
do {
|
970 |
|
|
chunkSize = (*selPtr->proc)(selPtr->clientData, size,
|
971 |
|
|
(char *) buffer, TK_SEL_BYTES_AT_ONCE);
|
972 |
|
|
if (ip.selPtr == NULL) {
|
973 |
|
|
size = 0;
|
974 |
|
|
break;
|
975 |
|
|
}
|
976 |
|
|
size += chunkSize;
|
977 |
|
|
} while (chunkSize == TK_SEL_BYTES_AT_ONCE);
|
978 |
|
|
pendingPtr = ip.nextPtr;
|
979 |
|
|
return size;
|
980 |
|
|
}
|
981 |
|
|
|
982 |
|
|
/*
|
983 |
|
|
*----------------------------------------------------------------------
|
984 |
|
|
*
|
985 |
|
|
* IncrTimeoutProc --
|
986 |
|
|
*
|
987 |
|
|
* This procedure is invoked once a second while sending the
|
988 |
|
|
* selection to a requestor in INCR mode. After a while it
|
989 |
|
|
* gives up and aborts the selection operation.
|
990 |
|
|
*
|
991 |
|
|
* Results:
|
992 |
|
|
* None.
|
993 |
|
|
*
|
994 |
|
|
* Side effects:
|
995 |
|
|
* A new timeout gets registered so that this procedure gets
|
996 |
|
|
* called again in another second, unless too many seconds
|
997 |
|
|
* have elapsed, in which case incrPtr is marked as "all done".
|
998 |
|
|
*
|
999 |
|
|
*----------------------------------------------------------------------
|
1000 |
|
|
*/
|
1001 |
|
|
|
1002 |
|
|
static void
|
1003 |
|
|
IncrTimeoutProc(clientData)
|
1004 |
|
|
ClientData clientData; /* Information about INCR-mode
|
1005 |
|
|
* selection retrieval for which
|
1006 |
|
|
* we are selection owner. */
|
1007 |
|
|
{
|
1008 |
|
|
register IncrInfo *incrPtr = (IncrInfo *) clientData;
|
1009 |
|
|
|
1010 |
|
|
incrPtr->idleTime++;
|
1011 |
|
|
if (incrPtr->idleTime >= 5) {
|
1012 |
|
|
incrPtr->numIncrs = 0;
|
1013 |
|
|
} else {
|
1014 |
|
|
incrPtr->timeout = Tcl_CreateTimerHandler(1000, IncrTimeoutProc,
|
1015 |
|
|
(ClientData) incrPtr);
|
1016 |
|
|
}
|
1017 |
|
|
}
|
1018 |
|
|
|
1019 |
|
|
/*
|
1020 |
|
|
*----------------------------------------------------------------------
|
1021 |
|
|
*
|
1022 |
|
|
* SelCvtToX --
|
1023 |
|
|
*
|
1024 |
|
|
* Given a selection represented as a string (the normal Tcl form),
|
1025 |
|
|
* convert it to the ICCCM-mandated format for X, depending on
|
1026 |
|
|
* the type argument. This procedure and SelCvtFromX are inverses.
|
1027 |
|
|
*
|
1028 |
|
|
* Results:
|
1029 |
|
|
* The return value is a malloc'ed buffer holding a value
|
1030 |
|
|
* equivalent to "string", but formatted as for "type". It is
|
1031 |
|
|
* the caller's responsibility to free the string when done with
|
1032 |
|
|
* it. The word at *numLongsPtr is filled in with the number of
|
1033 |
|
|
* 32-bit words returned in the result.
|
1034 |
|
|
*
|
1035 |
|
|
* Side effects:
|
1036 |
|
|
* None.
|
1037 |
|
|
*
|
1038 |
|
|
*----------------------------------------------------------------------
|
1039 |
|
|
*/
|
1040 |
|
|
|
1041 |
|
|
static long *
|
1042 |
|
|
SelCvtToX(string, type, tkwin, numLongsPtr)
|
1043 |
|
|
char *string; /* String representation of selection. */
|
1044 |
|
|
Atom type; /* Atom specifying the X format that is
|
1045 |
|
|
* desired for the selection. Should not
|
1046 |
|
|
* be XA_STRING (if so, don't bother calling
|
1047 |
|
|
* this procedure at all). */
|
1048 |
|
|
Tk_Window tkwin; /* Window that governs atom conversion. */
|
1049 |
|
|
int *numLongsPtr; /* Number of 32-bit words contained in the
|
1050 |
|
|
* result. */
|
1051 |
|
|
{
|
1052 |
|
|
register char *p;
|
1053 |
|
|
char *field;
|
1054 |
|
|
int numFields;
|
1055 |
|
|
long *propPtr, *longPtr;
|
1056 |
|
|
#define MAX_ATOM_NAME_LENGTH 100
|
1057 |
|
|
char atomName[MAX_ATOM_NAME_LENGTH+1];
|
1058 |
|
|
|
1059 |
|
|
/*
|
1060 |
|
|
* The string is assumed to consist of fields separated by spaces.
|
1061 |
|
|
* The property gets generated by converting each field to an
|
1062 |
|
|
* integer number, in one of two ways:
|
1063 |
|
|
* 1. If type is XA_ATOM, convert each field to its corresponding
|
1064 |
|
|
* atom.
|
1065 |
|
|
* 2. If type is anything else, convert each field from an ASCII number
|
1066 |
|
|
* to a 32-bit binary number.
|
1067 |
|
|
*/
|
1068 |
|
|
|
1069 |
|
|
numFields = 1;
|
1070 |
|
|
for (p = string; *p != 0; p++) {
|
1071 |
|
|
if (isspace(UCHAR(*p))) {
|
1072 |
|
|
numFields++;
|
1073 |
|
|
}
|
1074 |
|
|
}
|
1075 |
|
|
propPtr = (long *) ckalloc((unsigned) numFields*sizeof(long));
|
1076 |
|
|
|
1077 |
|
|
/*
|
1078 |
|
|
* Convert the fields one-by-one.
|
1079 |
|
|
*/
|
1080 |
|
|
|
1081 |
|
|
for (longPtr = propPtr, *numLongsPtr = 0, p = string;
|
1082 |
|
|
; longPtr++, (*numLongsPtr)++) {
|
1083 |
|
|
while (isspace(UCHAR(*p))) {
|
1084 |
|
|
p++;
|
1085 |
|
|
}
|
1086 |
|
|
if (*p == 0) {
|
1087 |
|
|
break;
|
1088 |
|
|
}
|
1089 |
|
|
field = p;
|
1090 |
|
|
while ((*p != 0) && !isspace(UCHAR(*p))) {
|
1091 |
|
|
p++;
|
1092 |
|
|
}
|
1093 |
|
|
if (type == XA_ATOM) {
|
1094 |
|
|
int length;
|
1095 |
|
|
|
1096 |
|
|
length = p - field;
|
1097 |
|
|
if (length > MAX_ATOM_NAME_LENGTH) {
|
1098 |
|
|
length = MAX_ATOM_NAME_LENGTH;
|
1099 |
|
|
}
|
1100 |
|
|
strncpy(atomName, field, (unsigned) length);
|
1101 |
|
|
atomName[length] = 0;
|
1102 |
|
|
*longPtr = (long) Tk_InternAtom(tkwin, atomName);
|
1103 |
|
|
} else {
|
1104 |
|
|
char *dummy;
|
1105 |
|
|
|
1106 |
|
|
*longPtr = strtol(field, &dummy, 0);
|
1107 |
|
|
}
|
1108 |
|
|
}
|
1109 |
|
|
return propPtr;
|
1110 |
|
|
}
|
1111 |
|
|
|
1112 |
|
|
/*
|
1113 |
|
|
*----------------------------------------------------------------------
|
1114 |
|
|
*
|
1115 |
|
|
* SelCvtFromX --
|
1116 |
|
|
*
|
1117 |
|
|
* Given an X property value, formatted as a collection of 32-bit
|
1118 |
|
|
* values according to "type" and the ICCCM conventions, convert
|
1119 |
|
|
* the value to a string suitable for manipulation by Tcl. This
|
1120 |
|
|
* procedure is the inverse of SelCvtToX.
|
1121 |
|
|
*
|
1122 |
|
|
* Results:
|
1123 |
|
|
* The return value is the string equivalent of "property". It is
|
1124 |
|
|
* malloc-ed and should be freed by the caller when no longer
|
1125 |
|
|
* needed.
|
1126 |
|
|
*
|
1127 |
|
|
* Side effects:
|
1128 |
|
|
* None.
|
1129 |
|
|
*
|
1130 |
|
|
*----------------------------------------------------------------------
|
1131 |
|
|
*/
|
1132 |
|
|
|
1133 |
|
|
static char *
|
1134 |
|
|
SelCvtFromX(propPtr, numValues, type, tkwin)
|
1135 |
|
|
register long *propPtr; /* Property value from X. */
|
1136 |
|
|
int numValues; /* Number of 32-bit values in property. */
|
1137 |
|
|
Atom type; /* Type of property Should not be
|
1138 |
|
|
* XA_STRING (if so, don't bother calling
|
1139 |
|
|
* this procedure at all). */
|
1140 |
|
|
Tk_Window tkwin; /* Window to use for atom conversion. */
|
1141 |
|
|
{
|
1142 |
|
|
char *result;
|
1143 |
|
|
int resultSpace, curSize, fieldSize;
|
1144 |
|
|
char *atomName;
|
1145 |
|
|
|
1146 |
|
|
/*
|
1147 |
|
|
* Convert each long in the property to a string value, which is
|
1148 |
|
|
* either the name of an atom (if type is XA_ATOM) or a hexadecimal
|
1149 |
|
|
* string. Make an initial guess about the size of the result, but
|
1150 |
|
|
* be prepared to enlarge the result if necessary.
|
1151 |
|
|
*/
|
1152 |
|
|
|
1153 |
|
|
resultSpace = 12*numValues+1;
|
1154 |
|
|
curSize = 0;
|
1155 |
|
|
atomName = ""; /* Not needed, but eliminates compiler warning. */
|
1156 |
|
|
result = (char *) ckalloc((unsigned) resultSpace);
|
1157 |
|
|
*result = '\0';
|
1158 |
|
|
for ( ; numValues > 0; propPtr++, numValues--) {
|
1159 |
|
|
if (type == XA_ATOM) {
|
1160 |
|
|
atomName = Tk_GetAtomName(tkwin, (Atom) *propPtr);
|
1161 |
|
|
fieldSize = strlen(atomName) + 1;
|
1162 |
|
|
} else {
|
1163 |
|
|
fieldSize = 12;
|
1164 |
|
|
}
|
1165 |
|
|
if (curSize+fieldSize >= resultSpace) {
|
1166 |
|
|
char *newResult;
|
1167 |
|
|
|
1168 |
|
|
resultSpace *= 2;
|
1169 |
|
|
if (curSize+fieldSize >= resultSpace) {
|
1170 |
|
|
resultSpace = curSize + fieldSize + 1;
|
1171 |
|
|
}
|
1172 |
|
|
newResult = (char *) ckalloc((unsigned) resultSpace);
|
1173 |
|
|
strncpy(newResult, result, (unsigned) curSize);
|
1174 |
|
|
ckfree(result);
|
1175 |
|
|
result = newResult;
|
1176 |
|
|
}
|
1177 |
|
|
if (curSize != 0) {
|
1178 |
|
|
result[curSize] = ' ';
|
1179 |
|
|
curSize++;
|
1180 |
|
|
}
|
1181 |
|
|
if (type == XA_ATOM) {
|
1182 |
|
|
strcpy(result+curSize, atomName);
|
1183 |
|
|
} else {
|
1184 |
|
|
sprintf(result+curSize, "0x%x", (unsigned int) *propPtr);
|
1185 |
|
|
}
|
1186 |
|
|
curSize += strlen(result+curSize);
|
1187 |
|
|
}
|
1188 |
|
|
return result;
|
1189 |
|
|
}
|