1 files changed, 371 insertions, 0 deletions
diff --git a/carbon/tkMacOSXClipboard.c b/carbon/tkMacOSXClipboard.c
new file mode 100644
index 0000000..07fc925
--- /dev/null
+++ b/carbon/tkMacOSXClipboard.c
@@ -0,0 +1,371 @@
+/*
+ * tkMacOSXClipboard.c --
+ *
+ *	This file manages the clipboard for the Tk toolkit.
+ *
+ * Copyright (c) 1995-1997 Sun Microsystems, Inc.
+ * Copyright 2001, Apple Computer, Inc.
+ * Copyright (c) 2006-2007 Daniel A. Steffen <das@users.sourceforge.net>
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tkMacOSXPrivate.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 the
+ *	interp's 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;
+    OSStatus err;
+    long length;
+    ScrapRef scrapRef;
+    char *buf;
+
+    if ((selection == Tk_InternAtom(tkwin, "CLIPBOARD"))
+	    && (target == XA_STRING)) {
+	/*
+	 * Get the scrap from the Macintosh global clipboard.
+	 */
+
+	err = ChkErr(GetCurrentScrap, &scrapRef);
+	if (err != noErr) {
+	    Tcl_AppendResult(interp, Tk_GetAtomName(tkwin, selection),
+		    " GetCurrentScrap failed.", NULL);
+	    return TCL_ERROR;
+	}
+
+	/*
+	 * Try UNICODE first
+	 */
+
+	err = ChkErr(GetScrapFlavorSize, scrapRef, kScrapFlavorTypeUnicode,
+		&length);
+	if (err == noErr && length > 0) {
+	    Tcl_DString ds;
+	    char *data;
+
+	    buf = ckalloc(length + 2);
+	    buf[length] = 0;
+	    buf[length+1] = 0; /* 2-byte unicode null */
+	    err = ChkErr(GetScrapFlavorData, scrapRef, kScrapFlavorTypeUnicode,
+		    &length, buf);
+	    if (err == noErr) {
+		Tcl_DStringInit(&ds);
+		Tcl_UniCharToUtfDString((Tcl_UniChar *) buf,
+			Tcl_UniCharLen((Tcl_UniChar *) buf), &ds);
+		for (data = Tcl_DStringValue(&ds); *data != '\0'; data++) {
+		    if (*data == '\r') {
+			*data = '\n';
+		    }
+		}
+		result = proc(clientData, interp, Tcl_DStringValue(&ds));
+		Tcl_DStringFree(&ds);
+		ckfree(buf);
+		return result;
+	    }
+	}
+
+	err = ChkErr(GetScrapFlavorSize, scrapRef, 'TEXT', &length);
+	if (err != noErr) {
+	    Tcl_AppendResult(interp, Tk_GetAtomName(tkwin, selection),
+		    " GetScrapFlavorSize failed.", NULL);
+	    return TCL_ERROR;
+	}
+	if (length > 0) {
+	    Tcl_DString encodedText;
+	    char *data;
+
+	    buf = ckalloc(length + 1);
+	    buf[length] = 0;
+	    err = ChkErr(GetScrapFlavorData, scrapRef, 'TEXT', &length, buf);
+	    if (err != noErr) {
+		    Tcl_AppendResult(interp, Tk_GetAtomName(tkwin, selection),
+			" GetScrapFlavorData failed.", NULL);
+		    return TCL_ERROR;
+	    }
+
+	    /*
+	     * Tcl expects '\n' not '\r' as the line break character.
+	     */
+
+	    for (data = buf; *data != '\0'; data++) {
+		if (*data == '\r') {
+		    *data = '\n';
+		}
+	    }
+
+	    Tcl_ExternalToUtfDString(TkMacOSXCarbonEncoding, buf, length,
+		    &encodedText);
+	    result = proc(clientData, interp, Tcl_DStringValue(&encodedText));
+	    Tcl_DStringFree(&encodedText);
+
+	    ckfree(buf);
+	    return result;
+	}
+    }
+
+    Tcl_AppendResult(interp, Tk_GetAtomName(tkwin, selection),
+	    " selection doesn't exist or form \"",
+	    Tk_GetAtomName(tkwin, target), "\" not defined", 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) TkGetMainInfoList()->winPtr;
+
+    if (selection == Tk_InternAtom(tkwin, "CLIPBOARD")) {
+	/*
+	 * Only claim and empty the clipboard if we aren't already the owner
+	 * of the clipboard.
+	 */
+
+	dispPtr = TkGetMainInfoList()->winPtr->dispPtr;
+	if (dispPtr->clipboardActive) {
+	    return;
+	}
+	ClearCurrentScrap();
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * 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(void)
+{
+    TkClipboardTarget *targetPtr;
+    TkClipboardBuffer *cbPtr;
+    TkDisplay *dispPtr;
+    char *buffer, *p, *endPtr, *buffPtr;
+    long length;
+    ScrapRef scrapRef;
+
+    dispPtr = TkGetDisplayList();
+    if ((dispPtr == NULL) || !dispPtr->clipboardActive) {
+	return;
+    }
+
+    for (targetPtr = dispPtr->clipTargetPtr; targetPtr != NULL;
+	    targetPtr = targetPtr->nextPtr) {
+	if (targetPtr->type == XA_STRING) {
+	    break;
+	}
+    }
+    if (targetPtr != NULL) {
+	Tcl_DString encodedText, unicodedText;
+
+	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;
+		}
+	    }
+	}
+
+	ClearCurrentScrap();
+	GetCurrentScrap(&scrapRef);
+	Tcl_UtfToExternalDString(TkMacOSXCarbonEncoding, buffer, length,
+		&encodedText);
+	PutScrapFlavor(scrapRef, 'TEXT', 0, Tcl_DStringLength(&encodedText),
+		Tcl_DStringValue(&encodedText));
+	Tcl_DStringFree(&encodedText);
+
+	/*
+	 * Also put unicode data on scrap.
+	 */
+
+	Tcl_DStringInit(&unicodedText);
+	Tcl_UtfToUniCharDString(buffer, length, &unicodedText);
+	PutScrapFlavor(scrapRef, kScrapFlavorTypeUnicode, 0,
+		Tcl_DStringLength(&unicodedText),
+		Tcl_DStringValue(&unicodedText));
+	Tcl_DStringFree(&unicodedText);
+
+	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 (TkGetMainInfoList() != NULL) {
+	Tk_ClearSelection((Tk_Window) TkGetMainInfoList()->winPtr,
+		Tk_InternAtom((Tk_Window) TkGetMainInfoList()->winPtr,
+		"CLIPBOARD"));
+    }
+
+    return;
+}
+
+/*
+ * Local Variables:
+ * fill-column: 78
+ * c-basic-offset: 4
+ * End:
+ */