Added libXaw

1 files changed, 978 insertions, 0 deletions

diff --git a/libXaw/src/MultiSink.c b/libXaw/src/MultiSink.c
new file mode 100644
index 000000000..8abe2dedd
--- /dev/null
+++ b/libXaw/src/MultiSink.c
@@ -0,0 +1,978 @@
+/* $Xorg: MultiSink.c,v 1.4 2001/02/09 02:03:44 xorgcvs Exp $ */
+
+/*
+ * Copyright 1991 by OMRON Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of OMRON not be used in advertising
+ * or publicity pertaining to distribution of the software without specific,
+ * written prior permission.  OMRON makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as is"
+ * without express or implied warranty.
+ *
+ * OMRON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL OMRON BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTUOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ *
+ *      Author: Li Yuhong	 OMRON Corporation
+ */
+
+/***********************************************************
+
+Copyright 1987, 1988, 1994, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+
+Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its 
+documentation for any purpose and without fee is hereby granted, 
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in 
+supporting documentation, and that the name of Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.  
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+******************************************************************/
+/* $XFree86: xc/lib/Xaw/MultiSink.c,v 1.19 2001/01/17 19:42:27 dawes Exp $ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <X11/IntrinsicP.h>
+#include <X11/StringDefs.h>
+#include <X11/Xatom.h>
+#include <X11/Xaw/XawInit.h>
+#include <X11/Xaw/MultiSinkP.h>
+#include <X11/Xaw/MultiSrcP.h>
+#include <X11/Xaw/TextP.h>
+#include "XawI18n.h"
+#include <stdio.h>
+#include <ctype.h>
+#include "Private.h"
+
+#ifdef GETLASTPOS
+#undef GETLASTPOS		/* We will use our own GETLASTPOS */
+#endif
+
+#define GETLASTPOS	\
+	XawTextSourceScan(source, 0, XawstAll, XawsdRight, 1, True)
+
+/*
+ * Class Methods
+ */
+static void XawMultiSinkClassInitialize(void);
+static void XawMultiSinkInitialize(Widget, Widget, ArgList, Cardinal*);
+static void XawMultiSinkDestroy(Widget);
+static void XawMultiSinkResize(Widget);
+static Boolean XawMultiSinkSetValues(Widget, Widget, Widget,
+				     ArgList, Cardinal*);
+static int MaxLines(Widget, unsigned int);
+static int MaxHeight(Widget, int);
+static void SetTabs(Widget, int, short*);
+static void DisplayText(Widget, int, int,
+			XawTextPosition, XawTextPosition, Bool);
+static void InsertCursor(Widget, int, int, XawTextInsertState);
+static void FindPosition(Widget, XawTextPosition, int, int, Bool,
+			 XawTextPosition*, int*, int*);
+static void FindDistance(Widget, XawTextPosition, int, XawTextPosition, int*,
+			 XawTextPosition*, int*);
+static void Resolve(Widget, XawTextPosition, int, int, XawTextPosition*);
+static void GetCursorBounds(Widget, XRectangle*);
+
+/*
+ * Prototypes
+ */
+static void GetGC(MultiSinkObject);
+static int CharWidth(MultiSinkObject, XFontSet, int, wchar_t);
+static unsigned int PaintText(Widget w, GC gc, int x, int y,
+			      wchar_t *buf, int len, Bool);
+
+/*
+ * Defined in TextSink.c
+ */
+void _XawTextSinkClearToBackground(Widget, int, int, unsigned, unsigned);
+
+/*
+ * Initialization
+ */
+static wchar_t wspace[2];
+
+#define offset(field) XtOffsetOf(MultiSinkRec, multi_sink.field)
+static XtResource resources[] = {
+  {
+    XtNfontSet,
+    XtCFontSet,
+    XtRFontSet,
+    sizeof(XFontSet),
+    offset(fontset),
+    XtRString,
+    XtDefaultFontSet
+  },
+  {
+    XtNecho,
+    XtCOutput,
+    XtRBoolean,
+    sizeof(Boolean),
+    offset(echo),
+    XtRImmediate,
+    (XtPointer)True
+  },
+  {
+    XtNdisplayNonprinting,
+    XtCOutput,
+    XtRBoolean,
+    sizeof(Boolean),
+    offset(display_nonprinting),
+    XtRImmediate,
+    (XtPointer)True
+  },
+};
+#undef offset
+
+#define SuperClass		(&textSinkClassRec)
+MultiSinkClassRec multiSinkClassRec = {
+  /* object */
+  {
+    (WidgetClass)SuperClass,		/* superclass */
+    "MultiSink",			/* class_name */
+    sizeof(MultiSinkRec),		/* widget_size */
+    XawMultiSinkClassInitialize,	/* class_initialize */
+    NULL,				/* class_part_initialize */
+    False,				/* class_inited */
+    XawMultiSinkInitialize,		/* initialize */
+    NULL,				/* initialize_hook */
+    NULL,				/* obj1 */
+    NULL,				/* obj2 */
+    0,					/* obj3 */
+    resources,				/* resources */
+    XtNumber(resources),		/* num_resources */
+    NULLQUARK,				/* xrm_class */
+    False,				/* obj4 */
+    False,				/* obj5 */
+    False,				/* obj6 */
+    False,				/* obj7 */
+    XawMultiSinkDestroy,		/* destroy */
+    (XtProc)XawMultiSinkResize,		/* obj8 */
+    NULL,				/* obj9 */
+    XawMultiSinkSetValues,		/* set_values */
+    NULL,				/* set_values_hook */
+    NULL,				/* obj10 */
+    NULL,				/* get_values_hook */
+    NULL,				/* obj11 */
+    XtVersion,				/* version */
+    NULL,				/* callback_private */
+    NULL,				/* obj12 */
+    NULL,				/* obj13 */
+    NULL,				/* obj14 */
+    NULL,				/* extension */
+  },
+    /* text_sink */
+  {
+    DisplayText,			/* DisplayText */
+    InsertCursor,			/* InsertCursor */
+    XtInheritClearToBackground,		/* ClearToBackground */
+    FindPosition,			/* FindPosition */
+    FindDistance,			/* FindDistance */
+    Resolve,				/* Resolve */
+    MaxLines,				/* MaxLines */
+    MaxHeight,				/* MaxHeight */
+    SetTabs,				/* SetTabs */
+    GetCursorBounds,			/* GetCursorBounds */
+  },
+  /* multi_sink */
+  {
+    NULL,				/* extension */
+  }
+};
+
+WidgetClass multiSinkObjectClass = (WidgetClass)&multiSinkClassRec;
+
+/*
+ * Implementation
+ */
+static int
+CharWidth(MultiSinkObject sink, XFontSet fontset, int x, wchar_t c)
+{
+    int width = 0;
+
+    if (c == _Xaw_atowc(XawLF))
+	return (0);
+
+    if (c == _Xaw_atowc(XawTAB)) {
+	int i;
+	Position *tab;
+
+	width = x;
+	/* Adjust for Left Margin. */
+	x -= ((TextWidget)XtParent((Widget)sink))->text.left_margin;
+
+	i = 0;
+	tab = sink->text_sink.tabs;
+	/*CONSTCOND*/
+	while (1) {
+	    if (x < *tab)
+		return (*tab - x);
+	    /* Start again */
+	    if (++i >= sink->text_sink.tab_count) {
+		x -= *tab;
+		i = 0;
+		tab = sink->text_sink.tabs;
+		if (width == x)
+		    return (0);
+	    }
+	    else
+		++tab;
+	}
+	/*NOTREACHED*/
+    }
+
+    if (XwcTextEscapement(fontset, &c, 1) == 0) {
+	if (sink->multi_sink.display_nonprinting)
+	    c = _Xaw_atowc('@');
+	else
+	    c = _Xaw_atowc(XawSP);
+    }
+
+      /*
+       * if more efficiency(suppose one column is one ASCII char)
+
+      width = XwcGetColumn(fontset->font_charset, fontset->num_of_fonts, c) *
+	      fontset->font_struct_list[0]->min_bounds.width;
+       *
+       * WARNING: Very Slower!!!
+       *
+       * Li Yuhong.
+       */
+
+    width = XwcTextEscapement(fontset, &c, 1);
+
+    return (width);
+}
+
+/*
+ * Function:
+ *	PaintText
+ *
+ * Parameters:
+ *	w   - text sink object
+ *	gc  - gc to paint text
+ *	x   - location to paint the text
+ *	y   - ""
+ *	buf - buffer and length of text to paint
+ *	len - ""
+ *	clear_bg - clear background before drawing ?
+ *
+ * Description:
+ *	Actually paints the text into the window.
+ *
+ * Returns:
+ *	The width of the text painted
+ */
+static unsigned int
+PaintText(Widget w, GC gc, int x, int y, wchar_t *buf, int len, Bool clear_bg)
+{
+    MultiSinkObject sink = (MultiSinkObject)w;
+    TextWidget ctx = (TextWidget)XtParent(w);
+    XFontSet fontset = sink->multi_sink.fontset;
+    unsigned int width = XwcTextEscapement(fontset, buf, len);
+
+    if (((int)width) <= -x)		/* Don't draw if we can't see it */
+	return (width);
+
+    if (clear_bg) {
+	XFontSetExtents *ext = XExtentsOfFontSet(fontset);
+
+	_XawTextSinkClearToBackground(w, x, y - abs(ext->max_logical_extent.y),
+				      width, ext->max_logical_extent.height);
+	XwcDrawString(XtDisplay(ctx), XtWindow(ctx), fontset, gc, x, y, buf, len);
+    }
+    else
+	XwcDrawImageString(XtDisplay(ctx), XtWindow(ctx), fontset, gc,
+			   x, y, buf, len);
+
+    return (width);
+}
+
+/* Sink Object Functions */
+/*
+ * This function does not know about drawing more than one line of text
+ */
+static void
+DisplayText(Widget w, int x, int y,
+	    XawTextPosition pos1, XawTextPosition pos2, Bool highlight)
+{
+    TextWidget ctx = (TextWidget)XtParent(w);
+    MultiSinkObject sink = (MultiSinkObject)w;
+    XFontSet fontset = sink->multi_sink.fontset;
+    Widget source = XawTextGetSource(XtParent(w));
+    wchar_t buf[256];
+    XFontSetExtents *ext = XExtentsOfFontSet(fontset);
+    int j, k;
+    XawTextBlock blk;
+    GC gc, invgc, tabgc;
+    int max_x;
+    Bool clear_bg;
+
+    if (!sink->multi_sink.echo || !ctx->text.lt.lines)
+	return;
+
+    max_x = (int)XtWidth(ctx) - ctx->text.r_margin.right;
+    clear_bg = !highlight && ctx->core.background_pixmap != XtUnspecifiedPixmap;
+
+    gc = highlight ? sink->multi_sink.invgc : sink->multi_sink.normgc;
+    invgc = highlight ? sink->multi_sink.normgc : sink->multi_sink.invgc;
+
+    if (highlight && sink->multi_sink.xorgc)
+	tabgc = sink->multi_sink.xorgc;
+    else
+	tabgc = invgc;
+
+    y += abs(ext->max_logical_extent.y);
+    for (j = 0; pos1 < pos2;) {
+	pos1 = XawTextSourceRead(source, pos1, &blk, (int) pos2 - pos1);
+	for (k = 0; k < blk.length; k++) {
+	    if ((unsigned) j >= (sizeof(buf) / sizeof(wchar_t)) - 1) {
+		/* buffer full, dump the text */
+		if ((x += PaintText(w, gc, x, y, buf, j, clear_bg)) >= max_x)
+		    return;
+		j = 0;
+	    }
+	    buf[j] = ((wchar_t *)blk.ptr)[k];
+	    if (buf[j] == _Xaw_atowc(XawLF))
+		continue;
+
+	    else if (buf[j] == _Xaw_atowc(XawTAB)) {
+		unsigned int width;
+
+		if (j != 0 &&
+		    (x += PaintText(w, gc, x, y, buf, j, clear_bg)) >= max_x)
+		    return;
+
+		width = CharWidth(sink, fontset, x, _Xaw_atowc(XawTAB));
+		if (clear_bg)
+		    _XawTextSinkClearToBackground(w,
+					x, y - abs(ext->max_logical_extent.y),
+					width, ext->max_logical_extent.height);
+		else
+		    XFillRectangle(XtDisplayOfObject(w), XtWindowOfObject(w),
+				   tabgc, x,
+				   y - abs(ext->max_logical_extent.y),
+				   width,
+				   ext->max_logical_extent.height);
+		x += width;
+		j = -1;
+	    }
+	    else if (XwcTextEscapement(sink->multi_sink.fontset, &buf[j], 1)
+		     == 0) {
+		if (sink->multi_sink.display_nonprinting)
+		    buf[j] = _Xaw_atowc('@');
+		else
+		    buf[j] = _Xaw_atowc(XawSP);
+	    }
+	    j++;
+	}
+    }
+
+    if (j > 0)
+	(void)PaintText(w, gc, x, y, buf, j, clear_bg);
+}
+
+/*
+ * Function:
+ *	GetCursorBounds
+ *
+ * Parameters:
+ *	w    - text sink object
+ *	rect - X rectangle to return the cursor bounds
+ *
+ * Description:
+ *	Returns the size and location of the cursor.
+ */
+static void
+GetCursorBounds(Widget w, XRectangle *rect)
+{
+    MultiSinkObject sink = (MultiSinkObject)w;
+
+    rect->width = CharWidth(sink, sink->multi_sink.fontset, 0, _Xaw_atowc(XawSP));
+    rect->height = (XExtentsOfFontSet(sink->multi_sink.fontset)
+		    ->max_logical_extent.height);
+    rect->x = sink->multi_sink.cursor_x;
+    rect->y = sink->multi_sink.cursor_y - (short)rect->height;
+}
+
+/*
+ * The following procedure manages the "insert" cursor
+ */
+static void
+InsertCursor(Widget w, int x, int y, XawTextInsertState state)
+{
+    MultiSinkObject sink = (MultiSinkObject)w;
+    XFontSet fontset = sink->multi_sink.fontset;
+    Widget ctx = XtParent(w);
+    XawTextPosition position = XawTextGetInsertionPoint(ctx);
+
+    if (XtIsRealized(ctx)) {
+	int fheight, fdiff;
+	XawTextBlock block;
+	wchar_t c;
+	XawTextPosition selection_start, selection_end;
+	Boolean has_selection;
+	XFontSetExtents *ext = XExtentsOfFontSet(fontset);
+
+	XawTextGetSelectionPos((Widget)ctx, &selection_start, &selection_end);
+	has_selection = selection_start != selection_end;
+
+	fheight = ext->max_logical_extent.height;
+	fdiff = fheight - abs(ext->max_logical_extent.y);
+
+	if ((sink->multi_sink.cursor_position != position || state == XawisOff)
+	    && !has_selection && sink->multi_sink.laststate != XawisOff) {
+	    wchar_t *ochar;
+
+	    (void)XawTextSourceRead(XawTextGetSource(ctx),
+				    sink->multi_sink.cursor_position,
+				    &block, 1);
+	    if (!block.length)
+		ochar = NULL;
+	    else {
+		c = ((wchar_t *)block.ptr)[0];
+		if (c == _Xaw_atowc(XawLF))
+		    ochar = NULL;
+		else if (c == _Xaw_atowc(XawTAB))
+		    ochar = wspace;
+		else
+		    ochar = (wchar_t *)block.ptr;
+	    }
+
+	    if (!ochar)
+		_XawTextSinkClearToBackground(w, sink->multi_sink.cursor_x,
+					      (sink->multi_sink.cursor_y - 1 -
+					      fheight), CharWidth(sink, fontset,
+								  0, wspace[0]),
+					      fheight);
+	    else {
+		if (XwcTextEscapement(sink->multi_sink.fontset, ochar, 1) != 0)
+		    DisplayText(w, sink->multi_sink.cursor_x,
+				sink->multi_sink.cursor_y - 1 - fheight,
+				sink->multi_sink.cursor_position,
+				sink->multi_sink.cursor_position + 1,
+				False);
+		else
+		    PaintText(w, sink->multi_sink.normgc,
+			      sink->multi_sink.cursor_x,
+			      sink->multi_sink.cursor_y - 1 - fdiff,
+			      ochar, 1,
+			      ctx->core.background_pixmap != XtUnspecifiedPixmap);
+	    }
+	}
+
+	if (!has_selection && state != XawisOff) {
+	    wchar_t *nchar;
+	    Boolean focus = ((TextWidget)ctx)->text.hasfocus;
+
+	    (void)XawTextSourceRead(XawTextGetSource(ctx),
+				    position, &block, 1);
+	    c = ((wchar_t *)block.ptr)[0];
+	    if (!block.length || c == _Xaw_atowc(XawLF)
+		|| c == _Xaw_atowc(XawTAB))
+		nchar = wspace;
+	    else
+		nchar = (wchar_t *)block.ptr;
+
+	    if (focus) {
+		if (XwcTextEscapement(sink->multi_sink.fontset, nchar, 1) != 0)
+		    XwcDrawImageString(XtDisplay(ctx), XtWindow(ctx),
+				       fontset, sink->multi_sink.invgc,
+				       x, (y - 1 - fdiff), nchar, 1);
+		else
+		    DisplayText(w, x, y - 1 - fheight,
+				position, position + 1, True);
+	    }
+	    else
+		XDrawRectangle(XtDisplay(ctx), XtWindow(ctx),
+			       sink->multi_sink.xorgc ?
+			       sink->multi_sink.xorgc : sink->multi_sink.normgc,
+			       x, y - 1 - fheight,
+			       CharWidth(sink, fontset, 0, *nchar) - 1,
+			       fheight - 1);
+	  }
+      }
+
+    sink->multi_sink.cursor_x = x;
+    sink->multi_sink.cursor_y = y;
+    sink->multi_sink.laststate = state;
+    sink->multi_sink.cursor_position = position;
+}
+
+/*
+ * Given two positions, find the distance between them
+ */
+static void
+FindDistance(Widget w, XawTextPosition fromPos, int fromx,
+	     XawTextPosition toPos, int *resWidth,
+	     XawTextPosition *resPos, int *resHeight)
+{
+    MultiSinkObject sink = (MultiSinkObject)w;
+    XFontSet fontset = sink->multi_sink.fontset;
+    TextWidget ctx = (TextWidget)XtParent(w);
+    Widget source = ctx->text.source;
+    XawTextPosition idx, pos;
+    wchar_t c;
+    XFontSetExtents *ext = XExtentsOfFontSet(fontset);
+    XawTextBlock blk;
+    int i, rWidth;
+
+    pos = XawTextSourceRead(source, fromPos, &blk, toPos - fromPos);
+    rWidth = 0;
+    for (i = 0, idx = fromPos; idx < toPos; i++, idx++) {
+	if (i >= blk.length) {
+	    i = 0;
+	    XawTextSourceRead(source, pos, &blk, toPos - pos);
+	    if (blk.length == 0)
+		break;
+	}
+	c = ((wchar_t *)blk.ptr)[i];
+	rWidth += CharWidth(sink, fontset, fromx + rWidth, c);
+	if (c == _Xaw_atowc(XawLF)) {
+	    idx++;
+	    break;
+	}
+    }
+
+    *resPos = idx;
+    *resWidth = rWidth;
+    *resHeight = ext->max_logical_extent.height;
+}
+
+static void
+FindPosition(Widget w, XawTextPosition fromPos, int fromx, int width,
+	     Bool stopAtWordBreak, XawTextPosition *resPos, int *resWidth,
+	     int *resHeight)
+{
+    MultiSinkObject sink = (MultiSinkObject)w;
+    TextWidget ctx = (TextWidget)XtParent(w);
+    Widget source = ctx->text.source;
+    XFontSet fontset = sink->multi_sink.fontset;
+    XawTextPosition idx, pos, whiteSpacePosition = 0;
+    int i, lastWidth, whiteSpaceWidth, rWidth;
+    Boolean whiteSpaceSeen;
+    wchar_t c;
+    XFontSetExtents *ext = XExtentsOfFontSet(fontset);
+    XawTextBlock blk;
+
+    pos = XawTextSourceRead(source, fromPos, &blk, BUFSIZ);
+    rWidth = lastWidth = whiteSpaceWidth = 0;
+    whiteSpaceSeen = False;
+    c = 0;
+
+    for (i = 0, idx = fromPos; rWidth <= width; i++, idx++) {
+	if (i >= blk.length) {
+	    i = 0;
+	    pos = XawTextSourceRead(source, pos, &blk, BUFSIZ);
+	    if (blk.length == 0)
+		break;
+	}
+	c = ((wchar_t *)blk.ptr)[i];
+	lastWidth = rWidth;
+	rWidth += CharWidth(sink, fontset, fromx + rWidth, c);
+
+	if (c == _Xaw_atowc(XawLF)) {
+	    idx++;
+	    break;
+	}
+	else if ((c == _Xaw_atowc(XawSP) || c == _Xaw_atowc(XawTAB))
+		 && rWidth <= width) {
+	    whiteSpaceSeen = True;
+	    whiteSpacePosition = idx;
+	    whiteSpaceWidth = rWidth;
+	}
+    }
+
+    if (rWidth > width && idx > fromPos) {
+	idx--;
+	rWidth = lastWidth;
+	if (stopAtWordBreak && whiteSpaceSeen) {
+	    idx = whiteSpacePosition + 1;
+	    rWidth = whiteSpaceWidth;
+	}
+    }
+
+    if (idx >= ctx->text.lastPos && c != _Xaw_atowc(XawLF))
+	idx = ctx->text.lastPos + 1;
+
+    *resPos = idx;
+    *resWidth = rWidth;
+    *resHeight = ext->max_logical_extent.height;
+}
+
+static void
+Resolve(Widget w, XawTextPosition pos, int fromx, int width,
+	XawTextPosition *pos_return)
+{
+    int resWidth, resHeight;
+    Widget source = XawTextGetSource(XtParent(w));
+
+    FindPosition(w, pos, fromx, width, False, pos_return, &resWidth, &resHeight);
+    if (*pos_return > GETLASTPOS)
+	*pos_return = GETLASTPOS;
+}
+
+static void
+GetGC(MultiSinkObject sink)
+{
+    XtGCMask valuemask = (GCGraphicsExposures | GCClipXOrigin |
+			  GCForeground | GCBackground);
+    XGCValues values;
+
+    /* XXX We dont want do share a gc that will change the clip-mask */
+    values.clip_x_origin = (long)sink;
+    values.clip_mask = None;
+    values.graphics_exposures = False;
+    
+    values.foreground = sink->text_sink.foreground;
+    values.background = sink->text_sink.background;
+
+    sink->multi_sink.normgc = XtAllocateGC((Widget)sink, 0, valuemask, &values,
+					   GCFont | GCClipMask, 0);
+
+    values.foreground = sink->text_sink.background;
+#ifndef OLDXAW
+    values.background = sink->text_sink.cursor_color;
+#else
+    values.background = sink->text_sink.foreground;
+#endif
+    sink->multi_sink.invgc = XtAllocateGC((Widget)sink, 0, valuemask, &values,
+					  GCFont | GCClipMask, 0);
+#ifndef OLDXAW
+    if (sink->text_sink.cursor_color != sink->text_sink.foreground) {
+	values.foreground = sink->text_sink.cursor_color;
+	values.background = sink->text_sink.foreground;
+	sink->multi_sink.xorgc = XtAllocateGC((Widget)sink, 0, valuemask,
+					      &values, GCFont | GCClipMask, 0);
+    }
+    else
+#endif /* OLDXAW */
+	sink->multi_sink.xorgc = NULL;
+
+    XawMultiSinkResize((Widget)sink);
+}
+
+static void
+XawMultiSinkClassInitialize(void)
+{
+    wspace[0] = _Xaw_atowc(XawSP);
+    XawInitializeWidgetSet();
+}
+
+/*
+ * Function:
+ *	XawMultiSinkInitialize
+ *
+ * Parameters:
+ *	request - requested and new values for the object instance
+ *	cnew    - ""
+ *
+ * Description:
+ *	Initializes the TextSink Object.
+ */
+/* ARGSUSED */
+static void
+XawMultiSinkInitialize(Widget request, Widget cnew,
+		       ArgList args, Cardinal *num_args)
+{
+    MultiSinkObject sink = (MultiSinkObject)cnew;
+
+    GetGC(sink);
+
+    if (!sink->multi_sink.fontset) XtError("Aborting: no fontset found\n");
+
+    sink->multi_sink.cursor_position = 0;
+    sink->multi_sink.laststate = XawisOff;
+    sink->multi_sink.cursor_x = sink->multi_sink.cursor_y = 0;
+}
+
+/*
+ * Function:
+ *	XawMultiSinkDestroy
+ *
+ * Parameters:
+ *	w - MultiSink Object
+ *
+ * Description:
+ *	This function cleans up when the object is destroyed.
+ */
+static void
+XawMultiSinkDestroy(Widget w)
+{
+    MultiSinkObject sink = (MultiSinkObject)w;
+
+    XtReleaseGC(w, sink->multi_sink.normgc);
+    XtReleaseGC(w, sink->multi_sink.invgc);
+    if (sink->multi_sink.xorgc)
+	XtReleaseGC(w, sink->multi_sink.xorgc);
+    sink->multi_sink.normgc =
+	sink->multi_sink.invgc =
+	sink->multi_sink.xorgc = NULL;
+}
+
+static void
+XawMultiSinkResize(Widget w)
+{
+    TextWidget ctx = (TextWidget)XtParent(w);
+    MultiSinkObject sink = (MultiSinkObject)w;
+    XRectangle rect;
+    int width, height;
+
+    if (w->core.widget_class != multiSinkObjectClass)
+	return;
+
+    rect.x = ctx->text.r_margin.left;
+    rect.y = ctx->text.r_margin.top;
+    width = (int)XtWidth(ctx) -
+      (int)ctx->text.r_margin.right - (int)ctx->text.r_margin.left;
+    height = (int)XtHeight(ctx) -
+      (int)ctx->text.r_margin.top - (int)ctx->text.r_margin.bottom;
+    rect.width = width;
+    rect.height = height;
+
+    if (sink->multi_sink.normgc) {
+	if (width >= 0 && height >= 0)
+	    XSetClipRectangles(XtDisplay((Widget)ctx), sink->multi_sink.normgc,
+			       0, 0, &rect, 1, Unsorted);
+	else
+	    XSetClipMask(XtDisplay((Widget)ctx), sink->multi_sink.normgc, None);
+    }
+    if (sink->multi_sink.invgc) {
+	if (width >= 0 && height >= 0)
+	    XSetClipRectangles(XtDisplay((Widget)ctx), sink->multi_sink.invgc,
+			       0, 0, &rect, 1, Unsorted);
+	else
+	    XSetClipMask(XtDisplay((Widget)ctx), sink->multi_sink.invgc, None);
+    }
+    if (sink->multi_sink.xorgc) {
+	if (width >= 0 && height >= 0)
+	    XSetClipRectangles(XtDisplay((Widget)ctx), sink->multi_sink.xorgc,
+			       0, 0, &rect, 1, Unsorted);
+	else
+	    XSetClipMask(XtDisplay((Widget)ctx), sink->multi_sink.xorgc, None);
+    }
+}
+
+/*
+ * Function:
+ *	XawMultiSinkSetValues
+ *
+ * Parameters:
+ *	current - current state of the object
+ *	request - what was requested
+ *	cnew    - what the object will become
+ *
+ * Description:
+ *	Sets the values for the MultiSink.
+ *
+ * Returns:
+ *	True if redisplay is needed
+ */
+/*ARGSUSED*/
+static Boolean
+XawMultiSinkSetValues(Widget current, Widget request, Widget cnew,
+		      ArgList args, Cardinal *num_args)
+{
+    MultiSinkObject w = (MultiSinkObject)cnew;
+    MultiSinkObject old_w = (MultiSinkObject)current;
+
+    /* Font set is not in the GC! Do not make a new GC when font set changes! */
+
+    if (w->multi_sink.fontset != old_w->multi_sink.fontset) {
+	((TextWidget)XtParent(cnew))->text.redisplay_needed = True;
+#ifndef NO_TAB_FIX
+	SetTabs((Widget)w, w->text_sink.tab_count, w->text_sink.char_tabs);
+#endif
+    }
+
+    if (w->text_sink.background != old_w->text_sink.background
+	|| w->text_sink.foreground != old_w->text_sink.foreground
+#ifndef OLDXAW
+	|| w->text_sink.cursor_color != old_w->text_sink.cursor_color
+#endif
+	) {
+	XtReleaseGC(cnew, w->multi_sink.normgc);
+	XtReleaseGC(cnew, w->multi_sink.invgc);
+	if (w->multi_sink.xorgc)
+	    XtReleaseGC(cnew, w->multi_sink.xorgc);
+	GetGC(w);
+	((TextWidget)XtParent(cnew))->text.redisplay_needed = True;
+    }
+    else if (w->multi_sink.echo != old_w->multi_sink.echo
+	     || w->multi_sink.display_nonprinting
+	     != old_w->multi_sink.display_nonprinting)
+      ((TextWidget)XtParent(cnew))->text.redisplay_needed = True;
+
+    return (False);
+}
+
+/*
+ * Function:
+ *	MaxLines
+ *
+ * Parameters:
+ *	w - MultiSink Object
+ *	height - height to fit lines into
+ *
+ * Description:
+ *	Finds the Maximum number of lines that will fit in a given height.
+ *
+ * Returns:
+ *	The number of lines that will fit
+ */
+/*ARGSUSED*/
+static int
+MaxLines(Widget w, unsigned int height)
+{
+    MultiSinkObject sink = (MultiSinkObject)w;
+    int font_height;
+    XFontSetExtents *ext = XExtentsOfFontSet(sink->multi_sink.fontset);
+
+    font_height = ext->max_logical_extent.height;
+    return (height / font_height);
+}
+
+/*
+ * Function:
+ *	MaxHeight
+ *
+ * Parameters:
+ *	w     - MultiSink Object
+ *	lines - number of lines
+ *
+ * Description:
+ *	Finds the Minium height that will contain a given number lines.
+ * Returns:
+ *	The height
+ */
+/*ARGSUSED*/
+static int
+MaxHeight(Widget w, int lines)
+{
+    MultiSinkObject sink = (MultiSinkObject)w;
+    XFontSetExtents *ext = XExtentsOfFontSet(sink->multi_sink.fontset);
+
+    return (lines * ext->max_logical_extent.height);
+}
+
+/*
+ * Function:
+ *	SetTabs
+ *
+ * Arguments:
+ *	w	  - MultiSink Object
+ *	tab_count - number of tabs in the list
+ *	tabs	  - text positions of the tabs
+ *
+ * Description:
+ *	Sets the Tab stops.
+ */
+static void
+SetTabs(Widget w, int tab_count, short* tabs)
+{
+    MultiSinkObject sink = (MultiSinkObject)w;
+    int i;
+    Atom XA_FIGURE_WIDTH;
+    unsigned long figure_width = 0;
+    XFontStruct *font;
+
+    /*
+     * Bug:
+     *	 Suppose the first font of fontset stores the unit of column.
+     *
+     * By Li Yuhong, Mar. 14, 1991
+     */
+    {
+	XFontStruct **f_list;
+	char **f_name;
+
+	(void)XFontsOfFontSet(sink->multi_sink.fontset, &f_list, &f_name);
+	font = f_list[0];
+    }
+
+    /*
+     * Find the figure width of the current font
+     */
+    XA_FIGURE_WIDTH = XInternAtom(XtDisplayOfObject(w), "FIGURE_WIDTH", False);
+    if (XA_FIGURE_WIDTH != None
+	&& (!XGetFontProperty(font, XA_FIGURE_WIDTH, &figure_width)
+	    || figure_width == 0)) {
+	if (font->per_char && font->min_char_or_byte2 <= '$'
+	    && font->max_char_or_byte2 >= '$')
+	    figure_width = font->per_char['$' - font->min_char_or_byte2].width;
+	else
+	    figure_width = font->max_bounds.width;
+    }
+
+    if (tab_count > sink->text_sink.tab_count) {
+	sink->text_sink.tabs = (Position *)
+	    XtRealloc((char *)sink->text_sink.tabs,
+		      (Cardinal)(tab_count * sizeof(Position)));
+	sink->text_sink.char_tabs = (short *)
+	    XtRealloc((char *)sink->text_sink.char_tabs,
+		      (Cardinal)(tab_count * sizeof(short)));
+      }
+
+    for (i = 0 ; i < tab_count ; i++) {
+	sink->text_sink.tabs[i] = tabs[i] * figure_width;
+	sink->text_sink.char_tabs[i] = tabs[i];
+    }
+
+    sink->text_sink.tab_count = tab_count;
+
+#ifndef NO_TAB_FIX
+    ((TextWidget)XtParent(w))->text.redisplay_needed = True;
+#endif
+}
+
+void
+_XawMultiSinkPosToXY(Widget w, XawTextPosition pos, Position *x, Position *y)
+{
+    MultiSinkObject sink = (MultiSinkObject)((TextWidget)w)->text.sink;
+    XFontSetExtents *ext = XExtentsOfFontSet(sink->multi_sink.fontset);
+
+    _XawTextPosToXY(w, pos, x, y);
+    *y += abs(ext->max_logical_extent.y);
+}