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-rw-r--r--mac/tkMacClipboard.c293
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diff --git a/mac/tkMacClipboard.c b/mac/tkMacClipboard.c
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+/*
+ * tkMacClipboard.c --
+ *
+ * This file manages the clipboard for the Tk toolkit.
+ *
+ * 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.
+ *
+ * SCCS: @(#) tkMacClipboard.c 1.18 97/05/01 15:41:17
+ */
+
+#include "tkInt.h"
+#include "tkPort.h"
+#include "tkMacInt.h"
+
+#include <Scrap.h>
+#include <Events.h>
+
+#include "tkSelect.h"
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkSelGetSelection --
+ *
+ * Retrieve the specified selection from another process. For
+ * now, only fetching XA_STRING from CLIPBOARD is supported.
+ * Eventually other types should be allowed.
+ *
+ * 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 interp->result.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+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, /* Procedure to call to process the
+ * selection, once it has been retrieved. */
+ ClientData clientData) /* Arbitrary value to pass to proc. */
+{
+ int result;
+ long length, offset = 0;
+ Handle handle;
+
+ if ((selection == Tk_InternAtom(tkwin, "CLIPBOARD"))
+ && (target == XA_STRING)) {
+ /*
+ * Get the scrap from the Macintosh global clipboard.
+ */
+ handle = NewHandle(1);
+ length = GetScrap(handle, 'TEXT', &offset);
+ if (length > 0) {
+ SetHandleSize(handle, (Size) length + 1);
+ HLock(handle);
+ (*handle)[length] = '\0';
+
+ result = (*proc)(clientData, interp, *handle);
+
+ HUnlock(handle);
+ DisposeHandle(handle);
+ return result;
+ }
+
+ DisposeHandle(handle);
+ }
+
+ Tcl_AppendResult(interp, Tk_GetAtomName(tkwin, selection),
+ " selection doesn't exist or form \"", Tk_GetAtomName(tkwin, target),
+ "\" not defined", (char *) NULL);
+ return TCL_ERROR;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkSetSelectionOwner --
+ *
+ * This function claims ownership of the specified selection.
+ * If the selection is CLIPBOARD, then we empty the system
+ * clipboard.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+XSetSelectionOwner(
+ Display* display, /* X Display. */
+ Atom selection, /* What selection to own. */
+ Window owner, /* Window to be the owner. */
+ Time time) /* The current time? */
+{
+ Tk_Window tkwin;
+ TkDisplay *dispPtr;
+
+ /*
+ * This is a gross hack because the Tk_InternAtom interface is broken.
+ * It expects a Tk_Window, even though it only needs a Tk_Display.
+ */
+
+ tkwin = (Tk_Window)tkMainWindowList->winPtr;
+
+ if (selection == Tk_InternAtom(tkwin, "CLIPBOARD")) {
+
+ /*
+ * Only claim and empty the clipboard if we aren't already the
+ * owner of the clipboard.
+ */
+
+ dispPtr = tkMainWindowList->winPtr->dispPtr;
+ if (dispPtr->clipboardActive) {
+ return;
+ }
+ ZeroScrap();
+ }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkSelUpdateClipboard --
+ *
+ * This function is called to force the clipboard to be updated
+ * after new data is added. On the Mac we don't need to do
+ * anything.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TkSelUpdateClipboard(
+ TkWindow *winPtr, /* Window associated with clipboard. */
+ TkClipboardTarget *targetPtr) /* Info about the content. */
+{
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * TkSelEventProc --
+ *
+ * This procedure is invoked whenever a selection-related
+ * event occurs.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Lots: depends on the type of event.
+ *
+ *--------------------------------------------------------------
+ */
+
+void
+TkSelEventProc(
+ Tk_Window tkwin, /* Window for which event was
+ * targeted. */
+ register XEvent *eventPtr) /* X event: either SelectionClear,
+ * SelectionRequest, or
+ * SelectionNotify. */
+{
+ if (eventPtr->type == SelectionClear) {
+ TkSelClearSelection(tkwin, eventPtr);
+ }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkSelPropProc --
+ *
+ * This procedure is invoked when property-change events
+ * occur on windows not known to the toolkit. This is a stub
+ * function under Windows.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TkSelPropProc(
+ register XEvent *eventPtr) /* X PropertyChange event. */
+{
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkSuspendClipboard --
+ *
+ * Handle clipboard conversion as required by the suppend event.
+ * This function is also called on exit.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * The local scrap is moved to the global scrap.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TkSuspendClipboard()
+{
+ TkClipboardTarget *targetPtr;
+ TkClipboardBuffer *cbPtr;
+ TkDisplay *dispPtr;
+ char *buffer, *p, *endPtr, *buffPtr;
+ long length;
+
+ dispPtr = tkDisplayList;
+ if ((dispPtr == NULL) || !dispPtr->clipboardActive) {
+ return;
+ }
+
+ for (targetPtr = dispPtr->clipTargetPtr; targetPtr != NULL;
+ targetPtr = targetPtr->nextPtr) {
+ if (targetPtr->type == XA_STRING)
+ break;
+ }
+ if (targetPtr != NULL) {
+ length = 0;
+ for (cbPtr = targetPtr->firstBufferPtr; cbPtr != NULL;
+ cbPtr = cbPtr->nextPtr) {
+ length += cbPtr->length;
+ }
+
+ buffer = ckalloc(length);
+ buffPtr = buffer;
+ for (cbPtr = targetPtr->firstBufferPtr; cbPtr != NULL;
+ cbPtr = cbPtr->nextPtr) {
+ for (p = cbPtr->buffer, endPtr = p + cbPtr->length;
+ p < endPtr; p++) {
+ if (*p == '\n') {
+ *buffPtr++ = '\r';
+ } else {
+ *buffPtr++ = *p;
+ }
+ }
+ }
+
+ ZeroScrap();
+ PutScrap(length, 'TEXT', buffer);
+ ckfree(buffer);
+ }
+
+ /*
+ * The system now owns the scrap. We tell Tk that it has
+ * lost the selection so that it will look for it the next time
+ * it needs it. (Window list NULL if quiting.)
+ */
+
+ if (tkMainWindowList != NULL) {
+ Tk_ClearSelection((Tk_Window) tkMainWindowList->winPtr,
+ Tk_InternAtom((Tk_Window) tkMainWindowList->winPtr,
+ "CLIPBOARD"));
+ }
+
+ return;
+}