diff options
Diffstat (limited to 'unix/tkUnixSelect.c')
| -rw-r--r-- | unix/tkUnixSelect.c | 716 |
1 files changed, 371 insertions, 345 deletions
diff --git a/unix/tkUnixSelect.c b/unix/tkUnixSelect.c index 17ba36c..060fdd1 100644 --- a/unix/tkUnixSelect.c +++ b/unix/tkUnixSelect.c @@ -1,13 +1,12 @@ -/* +/* * tkUnixSelect.c -- * - * This file contains X specific routines for manipulating - * selections. + * This file contains X specific routines for manipulating selections. * * Copyright (c) 1995-1997 Sun Microsystems, Inc. * - * See the file "license.terms" for information on usage and redistribution - * of this file, and for a DISCLAIMER OF ALL WARRANTIES. + * See the file "license.terms" for information on usage and redistribution of + * this file, and for a DISCLAIMER OF ALL WARRANTIES. */ #include "tkInt.h" @@ -18,7 +17,7 @@ typedef struct ConvertInfo { * for the next chunk; -1 means all data has * been transferred for this conversion. -2 * means only the final zero-length transfer - * still has to be done. Otherwise it is the + * still has to be done. Otherwise it is the * offset of the next chunk of data to * transfer. */ Tcl_EncodingState state; /* The encoding state needed across chunks. */ @@ -27,84 +26,81 @@ typedef struct ConvertInfo { } ConvertInfo; /* - * When handling INCR-style selection retrievals, the selection owner - * uses the following data structure to communicate between the - * ConvertSelection procedure and TkSelPropProc. + * When handling INCR-style selection retrievals, the selection owner uses the + * following data structure to communicate between the ConvertSelection + * function and TkSelPropProc. */ typedef struct IncrInfo { TkWindow *winPtr; /* Window that owns selection. */ Atom selection; /* Selection that is being retrieved. */ - Atom *multAtoms; /* Information about conversions to - * perform: one or more pairs of - * (target, property). This either - * points to a retrieved property (for - * MULTIPLE retrievals) or to a static + Atom *multAtoms; /* Information about conversions to perform: + * one or more pairs of (target, property). + * This either points to a retrieved property + * (for MULTIPLE retrievals) or to a static * array. */ unsigned long numConversions; - /* Number of entries in converts (same as - * # of pairs in multAtoms). */ - ConvertInfo *converts; /* One entry for each pair in multAtoms. - * This array is malloc-ed. */ + /* Number of entries in converts (same as # of + * pairs in multAtoms). */ + ConvertInfo *converts; /* One entry for each pair in multAtoms. This + * array is malloc-ed. */ char **tempBufs; /* One pointer for each pair in multAtoms; * each pointer is either NULL, or it points * to a small bit of character data that was * left over from the previous chunk. */ - Tcl_EncodingState *state; /* One state info per pair in multAtoms: - * State info for encoding conversions - * that span multiple buffers. */ + Tcl_EncodingState *state; /* One state info per pair in multAtoms: State + * info for encoding conversions that span + * multiple buffers. */ int *flags; /* One state flag per pair in multAtoms: * Encoding flags, set to TCL_ENCODING_START * at the beginning of an INCR transfer. */ - int numIncrs; /* Number of entries in converts that - * aren't -1 (i.e. # of INCR-mode transfers - * not yet completed). */ - Tcl_TimerToken timeout; /* Token for timer procedure. */ - int idleTime; /* Number of seconds since we heard - * anything from the selection - * requestor. */ + int numIncrs; /* Number of entries in converts that aren't + * -1 (i.e. # of INCR-mode transfers not yet + * completed). */ + Tcl_TimerToken timeout; /* Token for timer function. */ + int idleTime; /* Number of seconds since we heard anything + * from the selection requestor. */ Window reqWindow; /* Requestor's window id. */ - Time time; /* Timestamp corresponding to - * selection at beginning of request; - * used to abort transfer if selection - * changes. */ - struct IncrInfo *nextPtr; /* Next in list of all INCR-style - * retrievals currently pending. */ + Time time; /* Timestamp corresponding to selection at + * beginning of request; used to abort + * transfer if selection changes. */ + struct IncrInfo *nextPtr; /* Next in list of all INCR-style retrievals + * currently pending. */ } IncrInfo; - typedef struct ThreadSpecificData { - IncrInfo *pendingIncrs; /* List of all incr structures - * currently active. */ + IncrInfo *pendingIncrs; /* List of all incr structures currently + * active. */ } ThreadSpecificData; static Tcl_ThreadDataKey dataKey; /* - * Largest property that we'll accept when sending or receiving the - * selection: + * Largest property that we'll accept when sending or receiving the selection: */ #define MAX_PROP_WORDS 100000 static TkSelRetrievalInfo *pendingRetrievals = NULL; - /* List of all retrievals currently - * being waited for. */ + /* List of all retrievals currently being + * waited for. */ /* - * Forward declarations for procedures defined in this file: + * Forward declarations for functions defined in this file: */ -static void ConvertSelection _ANSI_ARGS_((TkWindow *winPtr, - XSelectionRequestEvent *eventPtr)); -static void IncrTimeoutProc _ANSI_ARGS_((ClientData clientData)); -static void SelCvtFromX _ANSI_ARGS_((long *propPtr, int numValues, - Atom type, Tk_Window tkwin, Tcl_DString *dsPtr)); -static long * SelCvtToX _ANSI_ARGS_((char *string, Atom type, - Tk_Window tkwin, int *numLongsPtr)); -static int SelectionSize _ANSI_ARGS_((TkSelHandler *selPtr)); -static void SelRcvIncrProc _ANSI_ARGS_((ClientData clientData, - XEvent *eventPtr)); -static void SelTimeoutProc _ANSI_ARGS_((ClientData clientData)); +static void ConvertSelection(TkWindow *winPtr, + XSelectionRequestEvent *eventPtr); +static void IncrTimeoutProc(ClientData clientData); +static void SelCvtFromX32(long *propPtr, int numValues, Atom type, + Tk_Window tkwin, Tcl_DString *dsPtr); +static void SelCvtFromX8(char *propPtr, int numValues, Atom type, + Tk_Window tkwin, Tcl_DString *dsPtr); +static long * SelCvtToX(char *string, Atom type, Tk_Window tkwin, + int *numLongsPtr); +static int SelectionSize(TkSelHandler *selPtr); +static void SelRcvIncrProc(ClientData clientData, + XEvent *eventPtr); +static void SelTimeoutProc(ClientData clientData); /* *---------------------------------------------------------------------- @@ -114,9 +110,9 @@ static void SelTimeoutProc _ANSI_ARGS_((ClientData clientData)); * Retrieve the specified selection from another process. * * Results: - * The return value is a standard Tcl return value. - * If an error occurs (such as no selection exists) - * then an error message is left in the interp's result. + * The return value is a standard Tcl return value. If an error occurs + * (such as no selection exists) then an error message is left in the + * interp's result. * * Side effects: * None. @@ -125,27 +121,26 @@ static void SelTimeoutProc _ANSI_ARGS_((ClientData clientData)); */ int -TkSelGetSelection(interp, tkwin, selection, target, proc, clientData) - Tcl_Interp *interp; /* Interpreter to use for reporting - * errors. */ - Tk_Window tkwin; /* Window on whose behalf to retrieve - * the selection (determines display - * from which to retrieve). */ - Atom selection; /* Selection to retrieve. */ - Atom target; /* Desired form in which selection - * is to be returned. */ - Tk_GetSelProc *proc; /* Procedure to call to process the - * selection, once it has been retrieved. */ - ClientData clientData; /* Arbitrary value to pass to proc. */ +TkSelGetSelection( + Tcl_Interp *interp, /* Interpreter to use for reporting errors. */ + Tk_Window tkwin, /* Window on whose behalf to retrieve the + * selection (determines display from which to + * retrieve). */ + Atom selection, /* Selection to retrieve. */ + Atom target, /* Desired form in which selection is to be + * returned. */ + Tk_GetSelProc *proc, /* Function to call to process the selection, + * once it has been retrieved. */ + ClientData clientData) /* Arbitrary value to pass to proc. */ { TkSelRetrievalInfo retr; TkWindow *winPtr = (TkWindow *) tkwin; TkDisplay *dispPtr = winPtr->dispPtr; /* - * The selection is owned by some other process. To - * retrieve it, first record information about the retrieval - * in progress. Use an internal window as the requestor. + * The selection is owned by some other process. To retrieve it, first + * record information about the retrieval in progress. Use an internal + * window as the requestor. */ retr.interp = interp; @@ -171,20 +166,20 @@ TkSelGetSelection(interp, tkwin, selection, target, proc, clientData) pendingRetrievals = &retr; /* - * Initiate the request for the selection. Note: can't use - * TkCurrentTime for the time. If we do, and this application hasn't - * received any X events in a long time, the current time will be way - * in the past and could even predate the time when the selection was - * made; if this happens, the request will be rejected. + * Initiate the request for the selection. Note: can't use TkCurrentTime + * for the time. If we do, and this application hasn't received any X + * events in a long time, the current time will be way in the past and + * could even predate the time when the selection was made; if this + * happens, the request will be rejected. */ XConvertSelection(winPtr->display, retr.selection, retr.target, retr.property, retr.winPtr->window, CurrentTime); /* - * Enter a loop processing X events until the selection - * has been retrieved and processed. If no response is - * received within a few seconds, then timeout. + * Enter a loop processing X events until the selection has been retrieved + * and processed. If no response is received within a few seconds, then + * timeout. */ retr.timeout = Tcl_CreateTimerHandler(1000, SelTimeoutProc, @@ -195,8 +190,7 @@ TkSelGetSelection(interp, tkwin, selection, target, proc, clientData) Tcl_DeleteTimerHandler(retr.timeout); /* - * Unregister the information about the selection retrieval - * in progress. + * Unregister the information about the selection retrieval in progress. */ if (pendingRetrievals == &retr) { @@ -221,42 +215,41 @@ TkSelGetSelection(interp, tkwin, selection, target, proc, clientData) * * TkSelPropProc -- * - * This procedure is invoked when property-change events - * occur on windows not known to the toolkit. Its function - * is to implement the sending side of the INCR selection - * retrieval protocol when the selection requestor deletes - * the property containing a part of the selection. + * This function is invoked when property-change events occur on windows + * not known to the toolkit. Its function is to implement the sending + * side of the INCR selection retrieval protocol when the selection + * requestor deletes the property containing a part of the selection. * * Results: * None. * * Side effects: - * If the property that is receiving the selection was just - * deleted, then a new piece of the selection is fetched and - * placed in the property, until eventually there's no more - * selection to fetch. + * If the property that is receiving the selection was just deleted, then + * a new piece of the selection is fetched and placed in the property, + * until eventually there's no more selection to fetch. * *---------------------------------------------------------------------- */ void -TkSelPropProc(eventPtr) - register XEvent *eventPtr; /* X PropertyChange event. */ +TkSelPropProc( + register XEvent *eventPtr) /* X PropertyChange event. */ { register IncrInfo *incrPtr; register TkSelHandler *selPtr; - int i, length, numItems; + int length, numItems; + unsigned long i; Atom target, formatType; long buffer[TK_SEL_WORDS_AT_ONCE]; TkDisplay *dispPtr = TkGetDisplay(eventPtr->xany.display); Tk_ErrorHandler errorHandler; - ThreadSpecificData *tsdPtr = (ThreadSpecificData *) - Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData)); + ThreadSpecificData *tsdPtr = (ThreadSpecificData *) + Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData)); /* - * See if this event announces the deletion of a property being - * used for an INCR transfer. If so, then add the next chunk of - * data to the property. + * See if this event announces the deletion of a property being used for + * an INCR transfer. If so, then add the next chunk of data to the + * property. */ if (eventPtr->xproperty.state != PropertyDelete) { @@ -269,9 +262,9 @@ TkSelPropProc(eventPtr) } /* - * For each conversion that has been requested, handle any - * chunks that haven't been transmitted yet. - */ + * For each conversion that has been requested, handle any chunks that + * haven't been transmitted yet. + */ for (i = 0; i < incrPtr->numConversions; i++) { if ((eventPtr->xproperty.atom != incrPtr->multAtoms[2*i + 1]) @@ -310,28 +303,29 @@ TkSelPropProc(eventPtr) formatType = selPtr->format; if (incrPtr->converts[i].offset == -2) { /* - * We already got the last chunk, so send a null chunk - * to indicate that we are finished. + * We already got the last chunk, so send a null chunk to + * indicate that we are finished. */ numItems = 0; length = 0; } else { TkSelInProgress ip; + ip.selPtr = selPtr; ip.nextPtr = TkSelGetInProgress(); TkSelSetInProgress(&ip); /* - * Copy any bytes left over from a partial character at the end - * of the previous chunk into the beginning of the buffer. + * Copy any bytes left over from a partial character at the + * end of the previous chunk into the beginning of the buffer. * Pass the rest of the buffer space into the selection * handler. */ length = strlen(incrPtr->converts[i].buffer); strcpy((char *)buffer, incrPtr->converts[i].buffer); - + numItems = (*selPtr->proc)(selPtr->clientData, incrPtr->converts[i].offset, ((char *) buffer) + length, @@ -349,13 +343,14 @@ TkSelPropProc(eventPtr) } numItems += length; if (numItems > TK_SEL_BYTES_AT_ONCE) { - panic("selection handler returned too many bytes"); + Tcl_Panic("selection handler returned too many bytes"); } } ((char *) buffer)[numItems] = 0; errorHandler = Tk_CreateErrorHandler(eventPtr->xproperty.display, - -1, -1, -1, (int (*)()) NULL, (ClientData) NULL); + -1, -1, -1, (int (*)()) NULL, NULL); + /* * Encode the data using the proper format for each type. */ @@ -401,14 +396,13 @@ TkSelPropProc(eventPtr) /* - * Now convert the data, growing the destination buffer - * as needed. + * Now convert the data, growing the destination buffer as + * needed. */ while (1) { - result = Tcl_UtfToExternal(NULL, encoding, - src, srcLen, encodingCvtFlags, - &incrPtr->converts[i].state, + result = Tcl_UtfToExternal(NULL, encoding, src, srcLen, + encodingCvtFlags, &incrPtr->converts[i].state, dst, dstLen, &srcRead, &dstWrote, NULL); soFar = dst + dstWrote - Tcl_DStringValue(&ds); encodingCvtFlags &= ~TCL_ENCODING_START; @@ -446,7 +440,7 @@ TkSelPropProc(eventPtr) */ if (srcLen > TCL_UTF_MAX) { - panic("selection conversion left too many bytes unconverted"); + Tcl_Panic("selection conversion left too many bytes unconverted"); } memcpy(incrPtr->converts[i].buffer, src, (size_t) srcLen+1); Tcl_DStringFree(&ds); @@ -456,8 +450,7 @@ TkSelPropProc(eventPtr) */ char *propPtr = (char *) SelCvtToX((char *) buffer, - formatType, (Tk_Window) incrPtr->winPtr, - &numItems); + formatType, (Tk_Window) incrPtr->winPtr, &numItems); if (propPtr == NULL) { numItems = 0; @@ -473,9 +466,9 @@ TkSelPropProc(eventPtr) Tk_DeleteErrorHandler(errorHandler); /* - * Compute the next offset value. If this was the last chunk, - * then set the offset to -2. If this was an empty chunk, - * then set the offset to -1 to indicate we are done. + * Compute the next offset value. If this was the last chunk, then + * set the offset to -2. If this was an empty chunk, then set the + * offset to -1 to indicate we are done. */ if (numItems < TK_SEL_BYTES_AT_ONCE) { @@ -487,10 +480,10 @@ TkSelPropProc(eventPtr) } } else { /* - * Advance over the selection data that was consumed - * this time. + * Advance over the selection data that was consumed this + * time. */ - + incrPtr->converts[i].offset += numItems - length; } return; @@ -503,26 +496,24 @@ TkSelPropProc(eventPtr) * * TkSelEventProc -- * - * This procedure is invoked whenever a selection-related - * event occurs. It does the lion's share of the work - * in implementing the selection protocol. + * This function is invoked whenever a selection-related event occurs. + * It does the lion's share of the work in implementing the selection + * protocol. * * Results: * None. * * Side effects: - * Lots: depends on the type of event. + * Lots: depends on the type of event. * *-------------------------------------------------------------- */ void -TkSelEventProc(tkwin, eventPtr) - Tk_Window tkwin; /* Window for which event was - * targeted. */ - register XEvent *eventPtr; /* X event: either SelectionClear, - * SelectionRequest, or - * SelectionNotify. */ +TkSelEventProc( + Tk_Window tkwin, /* Window for which event was targeted. */ + register XEvent *eventPtr) /* X event: either SelectionClear, + * SelectionRequest, or SelectionNotify. */ { register TkWindow *winPtr = (TkWindow *) tkwin; TkDisplay *dispPtr = winPtr->dispPtr; @@ -537,13 +528,13 @@ TkSelEventProc(tkwin, eventPtr) } /* - * Case #2: SelectionNotify events. Call the relevant procedure - * to handle the incoming selection. + * Case #2: SelectionNotify events. Call the relevant function to handle + * the incoming selection. */ if (eventPtr->type == SelectionNotify) { register TkSelRetrievalInfo *retrPtr; - char *propInfo; + char *propInfo, **propInfoPtr = &propInfo; Atom type; int format, result; unsigned long numItems, bytesAfter; @@ -561,12 +552,12 @@ TkSelEventProc(tkwin, eventPtr) break; } if (eventPtr->xselection.property == None) { - Tcl_SetResult(retrPtr->interp, (char *) NULL, TCL_STATIC); + Tcl_SetResult(retrPtr->interp, NULL, TCL_STATIC); Tcl_AppendResult(retrPtr->interp, Tk_GetAtomName(tkwin, retrPtr->selection), " selection doesn't exist or form \"", Tk_GetAtomName(tkwin, retrPtr->target), - "\" not defined", (char *) NULL); + "\" not defined", NULL); retrPtr->result = TCL_ERROR; return; } @@ -578,13 +569,13 @@ TkSelEventProc(tkwin, eventPtr) eventPtr->xselection.requestor, retrPtr->property, 0, MAX_PROP_WORDS, False, (Atom) AnyPropertyType, &type, &format, &numItems, &bytesAfter, - (unsigned char **) &propInfo); + (unsigned char **) propInfoPtr); if ((result != Success) || (type == None)) { return; } if (bytesAfter != 0) { Tcl_SetResult(retrPtr->interp, "selection property too large", - TCL_STATIC); + TCL_STATIC); retrPtr->result = TCL_ERROR; XFree(propInfo); return; @@ -595,25 +586,25 @@ TkSelEventProc(tkwin, eventPtr) if (format != 8) { char buf[64 + TCL_INTEGER_SPACE]; - sprintf(buf, + sprintf(buf, "bad format for string selection: wanted \"8\", got \"%d\"", format); Tcl_SetResult(retrPtr->interp, buf, TCL_VOLATILE); retrPtr->result = TCL_ERROR; return; } - interp = retrPtr->interp; - Tcl_Preserve((ClientData) interp); + interp = retrPtr->interp; + Tcl_Preserve((ClientData) interp); /* - * Convert the X selection data into UTF before passing it - * to the selection callback. Note that the COMPOUND_TEXT - * uses a modified iso2022 encoding, not the current system - * encoding. For now we'll just blindly apply the iso2022 - * encoding. This is probably wrong, but it's a placeholder - * until we figure out what we're really supposed to do. For - * STRING, we need to use Latin-1 instead. Again, it's not - * really the full iso8859-1 space, but this is close enough. + * Convert the X selection data into UTF before passing it to the + * selection callback. Note that the COMPOUND_TEXT uses a modified + * iso2022 encoding, not the current system encoding. For now + * we'll just blindly apply the iso2022 encoding. This is probably + * wrong, but it's a placeholder until we figure out what we're + * really supposed to do. For STRING, we need to use Latin-1 + * instead. Again, it's not really the full iso8859-1 space, but + * this is close enough. */ if (type == dispPtr->compoundTextAtom) { @@ -632,16 +623,17 @@ TkSelEventProc(tkwin, eventPtr) Tcl_Release((ClientData) interp); } else if (type == dispPtr->utf8Atom) { /* - * The X selection data is in UTF-8 format already. - * We can't guarantee that propInfo is NULL-terminated, - * so we might have to copy the string. + * The X selection data is in UTF-8 format already. We can't + * guarantee that propInfo is NULL-terminated, so we might have to + * copy the string. */ + char *propData = propInfo; if (format != 8) { char buf[64 + TCL_INTEGER_SPACE]; - sprintf(buf, + sprintf(buf, "bad format for string selection: wanted \"8\", got \"%d\"", format); Tcl_SetResult(retrPtr->interp, buf, TCL_VOLATILE); @@ -659,13 +651,12 @@ TkSelEventProc(tkwin, eventPtr) if (propData != propInfo) { ckfree((char *) propData); } - } else if (type == dispPtr->incrAtom) { + } else if (type == dispPtr->incrAtom) { /* - * It's a !?#@!?!! INCR-style reception. Arrange to receive - * the selection in pieces, using the ICCCM protocol, then - * hang around until either the selection is all here or a - * timeout occurs. + * It's a !?#@!?!! INCR-style reception. Arrange to receive the + * selection in pieces, using the ICCCM protocol, then hang around + * until either the selection is all here or a timeout occurs. */ retrPtr->idleTime = 0; @@ -681,24 +672,28 @@ TkSelEventProc(tkwin, eventPtr) } else { Tcl_DString ds; - if (format != 32) { + if (format != 32 && format != 8) { char buf[64 + TCL_INTEGER_SPACE]; - sprintf(buf, - "bad format for selection: wanted \"32\", got \"%d\"", - format); + sprintf(buf, "bad format for selection: wanted \"32\" or " + "\"8\", got \"%d\"", format); Tcl_SetResult(retrPtr->interp, buf, TCL_VOLATILE); retrPtr->result = TCL_ERROR; return; } Tcl_DStringInit(&ds); - SelCvtFromX((long *) propInfo, (int) numItems, type, - (Tk_Window) winPtr, &ds); - interp = retrPtr->interp; - Tcl_Preserve((ClientData) interp); + if (format == 32) { + SelCvtFromX32((long *) propInfo, (int) numItems, type, + (Tk_Window) winPtr, &ds); + } else { + SelCvtFromX8((char *) propInfo, (int) numItems, type, + (Tk_Window) winPtr, &ds); + } + interp = retrPtr->interp; + Tcl_Preserve((ClientData) interp); retrPtr->result = (*retrPtr->proc)(retrPtr->clientData, interp, Tcl_DStringValue(&ds)); - Tcl_Release((ClientData) interp); + Tcl_Release((ClientData) interp); Tcl_DStringFree(&ds); } XFree(propInfo); @@ -706,8 +701,8 @@ TkSelEventProc(tkwin, eventPtr) } /* - * Case #3: SelectionRequest events. Call ConvertSelection to - * do the dirty work. + * Case #3: SelectionRequest events. Call ConvertSelection to do the dirty + * work. */ if (eventPtr->type == SelectionRequest) { @@ -721,32 +716,30 @@ TkSelEventProc(tkwin, eventPtr) * * SelTimeoutProc -- * - * This procedure is invoked once every second while waiting for - * the selection to be returned. After a while it gives up and - * aborts the selection retrieval. + * This function is invoked once every second while waiting for the + * selection to be returned. After a while it gives up and aborts the + * selection retrieval. * * Results: * None. * * Side effects: - * A new timer callback is created to call us again in another - * second, unless time has expired, in which case an error is - * recorded for the retrieval. + * A new timer callback is created to call us again in another second, + * unless time has expired, in which case an error is recorded for the + * retrieval. * *---------------------------------------------------------------------- */ static void -SelTimeoutProc(clientData) - ClientData clientData; /* Information about retrieval - * in progress. */ +SelTimeoutProc( + ClientData clientData) /* Information about retrieval in progress. */ { register TkSelRetrievalInfo *retrPtr = (TkSelRetrievalInfo *) clientData; /* - * Make sure that the retrieval is still in progress. Then - * see how long it's been since any sort of response was received - * from the other side. + * Make sure that the retrieval is still in progress. Then see how long + * it's been since any sort of response was received from the other side. */ if (retrPtr->result != -1) { @@ -754,10 +747,9 @@ SelTimeoutProc(clientData) } retrPtr->idleTime++; if (retrPtr->idleTime >= 5) { - /* - * Use a careful procedure to store the error message, because - * the result could already be partially filled in with a partial + * Use a careful function to store the error message, because the + * result could already be partially filled in with a partial * selection return. */ @@ -766,7 +758,7 @@ SelTimeoutProc(clientData) retrPtr->result = TCL_ERROR; } else { retrPtr->timeout = Tcl_CreateTimerHandler(1000, SelTimeoutProc, - (ClientData) retrPtr); + (ClientData) retrPtr); } } @@ -775,46 +767,46 @@ SelTimeoutProc(clientData) * * ConvertSelection -- * - * This procedure is invoked to handle SelectionRequest events. - * It responds to the requests, obeying the ICCCM protocols. + * This function is invoked to handle SelectionRequest events. It + * responds to the requests, obeying the ICCCM protocols. * * Results: * None. * * Side effects: * Properties are created for the selection requestor, and a - * SelectionNotify event is generated for the selection - * requestor. In the event of long selections, this procedure - * implements INCR-mode transfers, using the ICCCM protocol. + * SelectionNotify event is generated for the selection requestor. In the + * event of long selections, this function implements INCR-mode + * transfers, using the ICCCM protocol. * *---------------------------------------------------------------------- */ static void -ConvertSelection(winPtr, eventPtr) - TkWindow *winPtr; /* Window that received the - * conversion request; may not be - * selection's current owner, be we - * set it to the current owner. */ - register XSelectionRequestEvent *eventPtr; - /* Event describing request. */ +ConvertSelection( + TkWindow *winPtr, /* Window that received the conversion + * request; may not be selection's current + * owner, be we set it to the current + * owner. */ + register XSelectionRequestEvent *eventPtr) + /* Event describing request. */ { - XSelectionEvent reply; /* Used to notify requestor that - * selection info is ready. */ - int multiple; /* Non-zero means a MULTIPLE request - * is being handled. */ - IncrInfo incr; /* State of selection conversion. */ - Atom singleInfo[2]; /* incr.multAtoms points here except - * for multiple conversions. */ - int i; + XSelectionEvent reply; /* Used to notify requestor that selection + * info is ready. */ + int multiple; /* Non-zero means a MULTIPLE request is being + * handled. */ + IncrInfo incr; /* State of selection conversion. */ + Atom singleInfo[2]; /* incr.multAtoms points here except for + * multiple conversions. */ + unsigned long i; Tk_ErrorHandler errorHandler; TkSelectionInfo *infoPtr; TkSelInProgress ip; - ThreadSpecificData *tsdPtr = (ThreadSpecificData *) - Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData)); + ThreadSpecificData *tsdPtr = (ThreadSpecificData *) + Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData)); errorHandler = Tk_CreateErrorHandler(eventPtr->display, -1, -1,-1, - (int (*)()) NULL, (ClientData) NULL); + (int (*)()) NULL, NULL); /* * Initialize the reply event. @@ -835,8 +827,9 @@ ConvertSelection(winPtr, eventPtr) for (infoPtr = winPtr->dispPtr->selectionInfoPtr; infoPtr != NULL; infoPtr = infoPtr->nextPtr) { - if (infoPtr->selection == eventPtr->selection) + if (infoPtr->selection == eventPtr->selection) { break; + } } if (infoPtr == NULL) { goto refuse; @@ -844,8 +837,8 @@ ConvertSelection(winPtr, eventPtr) winPtr = (TkWindow *) infoPtr->owner; /* - * Figure out which kind(s) of conversion to perform. If handling - * a MULTIPLE conversion, then read the property describing which + * Figure out which kind(s) of conversion to perform. If handling a + * MULTIPLE conversion, then read the property describing which * conversions to perform. */ @@ -858,7 +851,7 @@ ConvertSelection(winPtr, eventPtr) incr.multAtoms = singleInfo; incr.numConversions = 1; } else { - Atom type; + Atom type, **multAtomsPtr = &incr.multAtoms; int format, result; unsigned long bytesAfter; @@ -867,11 +860,10 @@ ConvertSelection(winPtr, eventPtr) if (eventPtr->property == None) { goto refuse; } - result = XGetWindowProperty(eventPtr->display, - eventPtr->requestor, eventPtr->property, - 0, MAX_PROP_WORDS, False, XA_ATOM, + result = XGetWindowProperty(eventPtr->display, eventPtr->requestor, + eventPtr->property, 0, MAX_PROP_WORDS, False, XA_ATOM, &type, &format, &incr.numConversions, &bytesAfter, - (unsigned char **) &incr.multAtoms); + (unsigned char **) multAtomsPtr); if ((result != Success) || (bytesAfter != 0) || (format != 32) || (type == None)) { if (incr.multAtoms != NULL) { @@ -883,14 +875,14 @@ ConvertSelection(winPtr, eventPtr) } /* - * Loop through all of the requested conversions, and either return - * the entire converted selection, if it can be returned in a single - * bunch, or return INCR information only (the actual selection will - * be returned below). + * Loop through all of the requested conversions, and either return the + * entire converted selection, if it can be returned in a single bunch, or + * return INCR information only (the actual selection will be returned + * below). */ - incr.converts = (ConvertInfo *) ckalloc((unsigned) - (incr.numConversions*sizeof(ConvertInfo))); + incr.converts = (ConvertInfo *) + ckalloc((unsigned) incr.numConversions * sizeof(ConvertInfo)); incr.numIncrs = 0; for (i = 0; i < incr.numConversions; i++) { Atom target, property, type; @@ -914,9 +906,9 @@ ConvertSelection(winPtr, eventPtr) if (selPtr == NULL) { /* - * Nobody seems to know about this kind of request. If - * it's of a sort that we can handle without any help, do - * it. Otherwise mark the request as an errror. + * Nobody seems to know about this kind of request. If it's of a + * sort that we can handle without any help, do it. Otherwise mark + * the request as an errror. */ numItems = TkSelDefaultSelection(infoPtr, target, (char *) buffer, @@ -938,19 +930,19 @@ ConvertSelection(winPtr, eventPtr) continue; } if (numItems > TK_SEL_BYTES_AT_ONCE) { - panic("selection handler returned too many bytes"); + Tcl_Panic("selection handler returned too many bytes"); } ((char *) buffer)[numItems] = '\0'; } /* - * Got the selection; store it back on the requestor's property. + * Got the selection; store it back on the requestor's property. */ if (numItems == TK_SEL_BYTES_AT_ONCE) { /* - * Selection is too big to send at once; start an - * INCR-mode transfer. + * Selection is too big to send at once; start an INCR-mode + * transfer. */ incr.numIncrs++; @@ -969,33 +961,31 @@ ConvertSelection(winPtr, eventPtr) (unsigned char *) propPtr, numItems); } else if (type == winPtr->dispPtr->utf8Atom) { /* - * This matches selection requests of type UTF8_STRING, - * which allows us to pass our utf-8 information untouched. + * This matches selection requests of type UTF8_STRING, which + * allows us to pass our utf-8 information untouched. */ - XChangeProperty(reply.display, reply.requestor, - property, type, 8, PropModeReplace, - (unsigned char *) buffer, numItems); + XChangeProperty(reply.display, reply.requestor, property, type, 8, + PropModeReplace, (unsigned char *) buffer, numItems); } else if ((type == XA_STRING) || (type == winPtr->dispPtr->compoundTextAtom)) { Tcl_DString ds; Tcl_Encoding encoding; /* - * STRING is Latin-1, COMPOUND_TEXT is an iso2022 variant. - * We need to convert the selection text into these external - * forms before modifying the property. + * STRING is Latin-1, COMPOUND_TEXT is an iso2022 variant. We need + * to convert the selection text into these external forms before + * modifying the property. */ if (type == XA_STRING) { encoding = Tcl_GetEncoding(NULL, "iso8859-1"); } else { encoding = Tcl_GetEncoding(NULL, "iso2022"); - } - Tcl_UtfToExternalDString(encoding, (char*)buffer, -1, &ds); - XChangeProperty(reply.display, reply.requestor, - property, type, 8, PropModeReplace, - (unsigned char *) Tcl_DStringValue(&ds), + } + Tcl_UtfToExternalDString(encoding, (char *) buffer, -1, &ds); + XChangeProperty(reply.display, reply.requestor, property, type, 8, + PropModeReplace, (unsigned char *) Tcl_DStringValue(&ds), Tcl_DStringLength(&ds)); if (encoding) { Tcl_FreeEncoding(encoding); @@ -1008,18 +998,17 @@ ConvertSelection(winPtr, eventPtr) goto refuse; } format = 32; - XChangeProperty(reply.display, reply.requestor, - property, type, format, PropModeReplace, - (unsigned char *) propPtr, numItems); + XChangeProperty(reply.display, reply.requestor, property, type, + format, PropModeReplace, (unsigned char *) propPtr, + numItems); ckfree(propPtr); } } /* - * Send an event back to the requestor to indicate that the - * first stage of conversion is complete (everything is done - * except for long conversions that have to be done in INCR - * mode). + * Send an event back to the requestor to indicate that the first stage of + * conversion is complete (everything is done except for long conversions + * that have to be done in INCR mode). */ if (incr.numIncrs > 0) { @@ -1038,10 +1027,9 @@ ConvertSelection(winPtr, eventPtr) (unsigned char *) incr.multAtoms, (int) incr.numConversions*2); } else { - /* - * Not a MULTIPLE request. The first property in "multAtoms" - * got set to None if there was an error in conversion. + * Not a MULTIPLE request. The first property in "multAtoms" got set + * to None if there was an error in conversion. */ reply.property = incr.multAtoms[1]; @@ -1050,9 +1038,9 @@ ConvertSelection(winPtr, eventPtr) Tk_DeleteErrorHandler(errorHandler); /* - * Handle any remaining INCR-mode transfers. This all happens - * in callbacks to TkSelPropProc, so just wait until the number - * of uncompleted INCR transfers drops to zero. + * Handle any remaining INCR-mode transfers. This all happens in callbacks + * to TkSelPropProc, so just wait until the number of uncompleted INCR + * transfers drops to zero. */ if (incr.numIncrs > 0) { @@ -1063,7 +1051,7 @@ ConvertSelection(winPtr, eventPtr) } Tcl_DeleteTimerHandler(incr.timeout); errorHandler = Tk_CreateErrorHandler(winPtr->display, - -1, -1,-1, (int (*)()) NULL, (ClientData) NULL); + -1, -1,-1, (int (*)()) NULL, NULL); XSelectInput(reply.display, reply.requestor, 0L); Tk_DeleteErrorHandler(errorHandler); if (tsdPtr->pendingIncrs == &incr) { @@ -1080,7 +1068,7 @@ ConvertSelection(winPtr, eventPtr) } /* - * All done. Cleanup and return. + * All done. Cleanup and return. */ ckfree((char *) incr.converts); @@ -1090,10 +1078,10 @@ ConvertSelection(winPtr, eventPtr) return; /* - * An error occurred. Send back a refusal message. + * An error occurred. Send back a refusal message. */ - refuse: + refuse: reply.property = None; XSendEvent(reply.display, reply.requestor, False, 0, (XEvent *) &reply); Tk_DeleteErrorHandler(errorHandler); @@ -1105,30 +1093,28 @@ ConvertSelection(winPtr, eventPtr) * * SelRcvIncrProc -- * - * This procedure handles the INCR protocol on the receiving - * side. It is invoked in response to property changes on - * the requestor's window (which hopefully are because a new - * chunk of the selection arrived). + * This function handles the INCR protocol on the receiving side. It is + * invoked in response to property changes on the requestor's window + * (which hopefully are because a new chunk of the selection arrived). * * Results: * None. * * Side effects: - * If a new piece of selection has arrived, a procedure is - * invoked to deal with that piece. When the whole selection - * is here, a flag is left for the higher-level procedure that - * initiated the selection retrieval. + * If a new piece of selection has arrived, a function is invoked to deal + * with that piece. When the whole selection is here, a flag is left for + * the higher-level function that initiated the selection retrieval. * *---------------------------------------------------------------------- */ static void -SelRcvIncrProc(clientData, eventPtr) - ClientData clientData; /* Information about retrieval. */ - register XEvent *eventPtr; /* X PropertyChange event. */ +SelRcvIncrProc( + ClientData clientData, /* Information about retrieval. */ + register XEvent *eventPtr) /* X PropertyChange event. */ { register TkSelRetrievalInfo *retrPtr = (TkSelRetrievalInfo *) clientData; - char *propInfo; + char *propInfo, **propInfoPtr = &propInfo; Atom type; int format, result; unsigned long numItems, bytesAfter; @@ -1143,7 +1129,7 @@ SelRcvIncrProc(clientData, eventPtr) result = XGetWindowProperty(eventPtr->xproperty.display, eventPtr->xproperty.window, retrPtr->property, 0, MAX_PROP_WORDS, True, (Atom) AnyPropertyType, &type, &format, &numItems, - &bytesAfter, (unsigned char **) &propInfo); + &bytesAfter, (unsigned char **) propInfoPtr); if ((result != Success) || (type == None)) { return; } @@ -1164,16 +1150,16 @@ SelRcvIncrProc(clientData, eventPtr) if (format != 8) { char buf[64 + TCL_INTEGER_SPACE]; - - sprintf(buf, + + sprintf(buf, "bad format for string selection: wanted \"8\", got \"%d\"", format); Tcl_SetResult(retrPtr->interp, buf, TCL_VOLATILE); retrPtr->result = TCL_ERROR; goto done; } - interp = retrPtr->interp; - Tcl_Preserve((ClientData) interp); + interp = retrPtr->interp; + Tcl_Preserve((ClientData) interp); if (type == retrPtr->winPtr->dispPtr->compoundTextAtom) { encoding = Tcl_GetEncoding(NULL, "iso2022"); @@ -1185,8 +1171,8 @@ SelRcvIncrProc(clientData, eventPtr) /* * Check to see if there is any data left over from the previous - * chunk. If there is, copy the old data and the new data into - * a new buffer. + * chunk. If there is, copy the old data and the new data into a new + * buffer. */ Tcl_DStringInit(&temp); @@ -1210,10 +1196,10 @@ SelRcvIncrProc(clientData, eventPtr) src = propInfo; srcLen = numItems; } - + /* - * Set up the destination buffer so we can use as much space as - * is available. + * Set up the destination buffer so we can use as much space as is + * available. */ dstPtr = &retrPtr->buf; @@ -1247,11 +1233,11 @@ SelRcvIncrProc(clientData, eventPtr) result = (*retrPtr->proc)(retrPtr->clientData, interp, Tcl_DStringValue(dstPtr)); - Tcl_Release((ClientData) interp); + Tcl_Release((ClientData) interp); /* - * Copy any unused data into the destination buffer so we can - * pick it up next time around. + * Copy any unused data into the destination buffer so we can pick it + * up next time around. */ Tcl_DStringSetLength(dstPtr, 0); @@ -1269,24 +1255,28 @@ SelRcvIncrProc(clientData, eventPtr) } else { Tcl_DString ds; - if (format != 32) { + if (format != 32 && format != 8) { char buf[64 + TCL_INTEGER_SPACE]; - sprintf(buf, - "bad format for selection: wanted \"32\", got \"%d\"", - format); + sprintf(buf, "bad format for selection: wanted \"32\" or " + "\"8\", got \"%d\"", format); Tcl_SetResult(retrPtr->interp, buf, TCL_VOLATILE); retrPtr->result = TCL_ERROR; goto done; } Tcl_DStringInit(&ds); - SelCvtFromX((long *) propInfo, (int) numItems, type, - (Tk_Window) retrPtr->winPtr, &ds); - interp = retrPtr->interp; - Tcl_Preserve((ClientData) interp); + if (format == 32) { + SelCvtFromX32((long *) propInfo, (int) numItems, type, + (Tk_Window) retrPtr->winPtr, &ds); + } else { + SelCvtFromX8((char *) propInfo, (int) numItems, type, + (Tk_Window) retrPtr->winPtr, &ds); + } + interp = retrPtr->interp; + Tcl_Preserve((ClientData) interp); result = (*retrPtr->proc)(retrPtr->clientData, interp, Tcl_DStringValue(&ds)); - Tcl_Release((ClientData) interp); + Tcl_Release((ClientData) interp); Tcl_DStringFree(&ds); if (result != TCL_OK) { retrPtr->result = result; @@ -1303,25 +1293,24 @@ SelRcvIncrProc(clientData, eventPtr) * * SelectionSize -- * - * This procedure is called when the selection is too large to - * send in a single buffer; it computes the total length of - * the selection in bytes. + * This function is called when the selection is too large to send in a + * single buffer; it computes the total length of the selection in bytes. * * Results: - * The return value is the number of bytes in the selection - * given by selPtr. + * The return value is the number of bytes in the selection given by + * selPtr. * * Side effects: - * The selection is retrieved from its current owner (this is - * the only way to compute its size). + * The selection is retrieved from its current owner (this is the only + * way to compute its size). * *---------------------------------------------------------------------- */ static int -SelectionSize(selPtr) - TkSelHandler *selPtr; /* Information about how to retrieve - * the selection whose size is wanted. */ +SelectionSize( + TkSelHandler *selPtr) /* Information about how to retrieve the + * selection whose size is wanted. */ { char buffer[TK_SEL_BYTES_AT_ONCE+1]; int size, chunkSize; @@ -1331,15 +1320,17 @@ SelectionSize(selPtr) ip.selPtr = selPtr; ip.nextPtr = TkSelGetInProgress(); TkSelSetInProgress(&ip); + do { - chunkSize = (*selPtr->proc)(selPtr->clientData, size, - (char *) buffer, TK_SEL_BYTES_AT_ONCE); + chunkSize = (*selPtr->proc)(selPtr->clientData, size, (char *) buffer, + TK_SEL_BYTES_AT_ONCE); if (ip.selPtr == NULL) { size = 0; break; } size += chunkSize; } while (chunkSize == TK_SEL_BYTES_AT_ONCE); + TkSelSetInProgress(ip.nextPtr); return size; } @@ -1349,26 +1340,26 @@ SelectionSize(selPtr) * * IncrTimeoutProc -- * - * This procedure is invoked once a second while sending the - * selection to a requestor in INCR mode. After a while it - * gives up and aborts the selection operation. + * This function is invoked once a second while sending the selection to + * a requestor in INCR mode. After a while it gives up and aborts the + * selection operation. * * Results: * None. * * Side effects: - * A new timeout gets registered so that this procedure gets - * called again in another second, unless too many seconds - * have elapsed, in which case incrPtr is marked as "all done". + * A new timeout gets registered so that this function gets called again + * in another second, unless too many seconds have elapsed, in which case + * incrPtr is marked as "all done". * *---------------------------------------------------------------------- */ static void -IncrTimeoutProc(clientData) - ClientData clientData; /* Information about INCR-mode - * selection retrieval for which - * we are selection owner. */ +IncrTimeoutProc( + ClientData clientData) /* Information about INCR-mode selection + * retrieval for which we are selection + * owner. */ { register IncrInfo *incrPtr = (IncrInfo *) clientData; @@ -1387,15 +1378,16 @@ IncrTimeoutProc(clientData) * SelCvtToX -- * * Given a selection represented as a string (the normal Tcl form), - * convert it to the ICCCM-mandated format for X, depending on - * the type argument. This procedure and SelCvtFromX are inverses. + * convert it to the ICCCM-mandated format for X, depending on the type + * argument. This function and SelCvtFromX are inverses. * * Results: - * The return value is a malloc'ed buffer holding a value - * equivalent to "string", but formatted as for "type". It is - * the caller's responsibility to free the string when done with - * it. The word at *numLongsPtr is filled in with the number of - * 32-bit words returned in the result. + * The return value is a malloc'ed buffer holding a value equivalent to + * "string", but formatted as for "type". It is the caller's + * responsibility to free the string when done with it. The word at + * *numLongsPtr is filled in with the number of 32-bit words returned in + * the result. If NULL is returned, the input list was not actually a + * list. * * Side effects: * None. @@ -1404,17 +1396,17 @@ IncrTimeoutProc(clientData) */ static long * -SelCvtToX(string, type, tkwin, numLongsPtr) - char *string; /* String representation of selection. */ - Atom type; /* Atom specifying the X format that is - * desired for the selection. Should not - * be XA_STRING (if so, don't bother calling - * this procedure at all). */ - Tk_Window tkwin; /* Window that governs atom conversion. */ - int *numLongsPtr; /* Number of 32-bit words contained in the +SelCvtToX( + char *string, /* String representation of selection. */ + Atom type, /* Atom specifying the X format that is + * desired for the selection. Should not be + * XA_STRING (if so, don't bother calling this + * function at all). */ + Tk_Window tkwin, /* Window that governs atom conversion. */ + int *numLongsPtr) /* Number of 32-bit words contained in the * result. */ { - CONST char **field; + const char **field; int numFields, i; long *propPtr; @@ -1463,12 +1455,12 @@ SelCvtToX(string, type, tkwin, numLongsPtr) /* *---------------------------------------------------------------------- * - * SelCvtFromX -- + * SelCvtFromX32, SelCvtFromX8 -- * - * Given an X property value, formatted as a collection of 32-bit - * values according to "type" and the ICCCM conventions, convert - * the value to a string suitable for manipulation by Tcl. This - * procedure is the inverse of SelCvtToX. + * Given an X property value, formatted as a collection of 32-bit or + * 8-bit values according to "type" and the ICCCM conventions, convert + * the value to a string suitable for manipulation by Tcl. These + * functions are the inverse of SelCvtToX. * * Results: * The return value (stored in a Tcl_DString) is the string equivalent of @@ -1481,14 +1473,14 @@ SelCvtToX(string, type, tkwin, numLongsPtr) */ static void -SelCvtFromX(propPtr, numValues, type, tkwin, dsPtr) - register long *propPtr; /* Property value from X. */ - int numValues; /* Number of 32-bit values in property. */ - Atom type; /* Type of property Should not be - * XA_STRING (if so, don't bother calling - * this procedure at all). */ - Tk_Window tkwin; /* Window to use for atom conversion. */ - Tcl_DString *dsPtr; /* Where to store the converted string. */ +SelCvtFromX32( + register long *propPtr, /* Property value from X. */ + int numValues, /* Number of 32-bit values in property. */ + Atom type, /* Type of property Should not be XA_STRING + * (if so, don't bother calling this function + * at all). */ + Tk_Window tkwin, /* Window to use for atom conversion. */ + Tcl_DString *dsPtr) /* Where to store the converted string. */ { /* * Convert each long in the property to a string value, which is either @@ -1510,4 +1502,38 @@ SelCvtFromX(propPtr, numValues, type, tkwin, dsPtr) Tcl_DStringAppendElement(dsPtr, buf); } } + Tcl_DStringAppend(dsPtr, " ", 1); } + +static void +SelCvtFromX8( + register char *propPtr, /* Property value from X. */ + int numValues, /* Number of 8-bit values in property. */ + Atom type, /* Type of property Should not be XA_STRING + * (if so, don't bother calling this function + * at all). */ + Tk_Window tkwin, /* Window to use for atom conversion. */ + Tcl_DString *dsPtr) /* Where to store the converted string. */ +{ + /* + * Convert each long in the property to a string value, which is a + * hexadecimal string. We build the list in a Tcl_DString because this is + * easier than trying to get the quoting correct ourselves. + */ + + for ( ; numValues > 0; propPtr++, numValues--) { + char buf[12]; + + sprintf(buf, "0x%x", (unsigned char) *propPtr); + Tcl_DStringAppendElement(dsPtr, buf); + } + Tcl_DStringAppend(dsPtr, " ", 1); +} + +/* + * Local Variables: + * mode: c + * c-basic-offset: 4 + * fill-column: 78 + * End: + */ |