svn merge ^/branches/released .

1 files changed, 285 insertions, 0 deletions

diff --git a/libXft/src/xftextent.c b/libXft/src/xftextent.c
new file mode 100644
index 000000000..71f5c1c13
--- /dev/null
+++ b/libXft/src/xftextent.c
@@ -0,0 +1,285 @@
+/*
+ * Copyright © 2000 Keith Packard
+ *
+ * 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 Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Keith Packard makes no
+ * representations about the suitability of this software for any purpose.  It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD 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.
+ */
+
+#include "xftint.h"
+   
+_X_EXPORT void
+XftGlyphExtents (Display	    *dpy,
+		 XftFont	    *pub,
+		 _Xconst FT_UInt    *glyphs,
+		 int		    nglyphs,
+		 XGlyphInfo	    *extents)
+{
+    XftFontInt		*font = (XftFontInt *) pub;
+    FT_UInt		missing[XFT_NMISSING];
+    int			nmissing;
+    int			n;
+    _Xconst FT_UInt	*g;
+    FT_UInt		glyph;
+    XftGlyph		*xftg;
+    FcBool		glyphs_loaded;
+    int			x, y;
+    int			left, right, top, bottom;
+    int			overall_left, overall_right;
+    int			overall_top, overall_bottom;
+    
+    g = glyphs;
+    n = nglyphs;
+    nmissing = 0;
+    glyphs_loaded = FcFalse;
+    while (n--)
+	if (XftFontCheckGlyph (dpy, pub, FcFalse, *g++, missing, &nmissing))
+	    glyphs_loaded = FcTrue;
+    if (nmissing)
+	XftFontLoadGlyphs (dpy, pub, FcFalse, missing, nmissing);
+    g = glyphs;
+    n = nglyphs;
+    xftg = NULL;
+    while (n)
+    {
+	glyph = *g++;
+	n--;
+	if (glyph < font->num_glyphs &&
+	    (xftg = font->glyphs[glyph]))
+	    break;
+    }
+    if (n == 0)
+    {
+	if (xftg)
+	    *extents = xftg->metrics;
+	else
+	    memset (extents, '\0', sizeof (*extents));
+    }
+    else
+    {
+	x = 0;
+	y = 0;
+	overall_left = x - xftg->metrics.x;
+	overall_top = y - xftg->metrics.y;
+	overall_right = overall_left + (int) xftg->metrics.width;
+	overall_bottom = overall_top + (int) xftg->metrics.height;
+	x += xftg->metrics.xOff;
+	y += xftg->metrics.yOff;
+	while (n--)
+	{
+	    glyph = *g++;
+	    if (glyph < font->num_glyphs && (xftg = font->glyphs[glyph]))
+	    {
+		left = x - xftg->metrics.x;
+		top = y - xftg->metrics.y;
+		right = left + (int) xftg->metrics.width;
+		bottom = top + (int) xftg->metrics.height;
+		if (left < overall_left)
+		    overall_left = left;
+		if (top < overall_top)
+		    overall_top = top;
+		if (right > overall_right)
+		    overall_right = right;
+		if (bottom > overall_bottom)
+		    overall_bottom = bottom;
+		x += xftg->metrics.xOff;
+		y += xftg->metrics.yOff;
+	    }
+	}
+	extents->x = -overall_left;
+	extents->y = -overall_top;
+	extents->width = overall_right - overall_left;
+	extents->height = overall_bottom - overall_top;
+	extents->xOff = x;
+	extents->yOff = y;
+    }
+    if (glyphs_loaded)
+	_XftFontManageMemory (dpy, pub);
+}
+
+#define NUM_LOCAL   1024
+
+_X_EXPORT void
+XftTextExtents8 (Display	    *dpy,
+		 XftFont	    *pub,
+		 _Xconst FcChar8    *string, 
+		 int		    len,
+		 XGlyphInfo	    *extents)
+{
+    FT_UInt	    *glyphs, glyphs_local[NUM_LOCAL];
+    int		    i;
+
+    if (len <= NUM_LOCAL)
+	glyphs = glyphs_local;
+    else
+    {
+	glyphs = malloc (len * sizeof (FT_UInt));
+	if (!glyphs)
+	{
+	    memset (extents, '\0', sizeof (XGlyphInfo));
+	    return;
+	}
+    }
+    for (i = 0; i < len; i++)
+	glyphs[i] = XftCharIndex (dpy, pub, string[i]);
+    XftGlyphExtents (dpy, pub, glyphs, len, extents);
+    if (glyphs != glyphs_local)
+	free (glyphs);
+}
+
+_X_EXPORT void
+XftTextExtents16 (Display	    *dpy,
+		  XftFont	    *pub,
+		  _Xconst FcChar16  *string, 
+		  int		    len,
+		  XGlyphInfo	    *extents)
+{
+    FT_UInt	    *glyphs, glyphs_local[NUM_LOCAL];
+    int		    i;
+
+    if (len <= NUM_LOCAL)
+	glyphs = glyphs_local;
+    else
+    {
+	glyphs = malloc (len * sizeof (FT_UInt));
+	if (!glyphs)
+	{
+	    memset (extents, '\0', sizeof (XGlyphInfo));
+	    return;
+	}
+    }
+    for (i = 0; i < len; i++)
+	glyphs[i] = XftCharIndex (dpy, pub, string[i]);
+    XftGlyphExtents (dpy, pub, glyphs, len, extents);
+    if (glyphs != glyphs_local)
+	free (glyphs);
+}
+
+_X_EXPORT void
+XftTextExtents32 (Display	    *dpy,
+		  XftFont	    *pub,
+		  _Xconst FcChar32  *string, 
+		  int		    len,
+		  XGlyphInfo	    *extents)
+{
+    FT_UInt	    *glyphs, glyphs_local[NUM_LOCAL];
+    int		    i;
+
+    if (len <= NUM_LOCAL)
+	glyphs = glyphs_local;
+    else
+    {
+	glyphs = malloc (len * sizeof (FT_UInt));
+	if (!glyphs)
+	{
+	    memset (extents, '\0', sizeof (XGlyphInfo));
+	    return;
+	}
+    }
+    for (i = 0; i < len; i++)
+	glyphs[i] = XftCharIndex (dpy, pub, string[i]);
+    XftGlyphExtents (dpy, pub, glyphs, len, extents);
+    if (glyphs != glyphs_local)
+	free (glyphs);
+}
+
+_X_EXPORT void
+XftTextExtentsUtf8 (Display	    *dpy,
+		    XftFont	    *pub,
+		    _Xconst FcChar8 *string, 
+		    int		    len,
+		    XGlyphInfo	    *extents)
+{
+    FT_UInt	    *glyphs, *glyphs_new, glyphs_local[NUM_LOCAL];
+    FcChar32	    ucs4;
+    int		    i;
+    int		    l;
+    int		    size;
+
+    i = 0;
+    glyphs = glyphs_local;
+    size = NUM_LOCAL;
+    while (len && (l = FcUtf8ToUcs4 (string, &ucs4, len)) > 0)
+    {
+	if (i == size)
+	{
+	    glyphs_new = malloc (size * 2 * sizeof (FT_UInt));
+	    if (!glyphs_new)
+	    {
+		if (glyphs != glyphs_local)
+		    free (glyphs);
+		memset (extents, '\0', sizeof (XGlyphInfo));
+		return;
+	    }
+	    memcpy (glyphs_new, glyphs, size * sizeof (FT_UInt));
+	    size *= 2;
+	    if (glyphs != glyphs_local)
+		free (glyphs);
+	    glyphs = glyphs_new;
+	}
+	glyphs[i++] = XftCharIndex (dpy, pub, ucs4);
+	string += l;
+	len -= l;
+    }
+    XftGlyphExtents (dpy, pub, glyphs, i, extents);
+    if (glyphs != glyphs_local)
+	free (glyphs);
+}
+
+_X_EXPORT void
+XftTextExtentsUtf16 (Display		*dpy,
+		     XftFont		*pub,
+		     _Xconst FcChar8	*string, 
+		     FcEndian		endian,
+		     int		len,
+		     XGlyphInfo		*extents)
+{
+    FT_UInt	    *glyphs, *glyphs_new, glyphs_local[NUM_LOCAL];
+    FcChar32	    ucs4;
+    int		    i;
+    int		    l;
+    int		    size;
+
+    i = 0;
+    glyphs = glyphs_local;
+    size = NUM_LOCAL;
+    while (len && (l = FcUtf16ToUcs4 (string, endian, &ucs4, len)) > 0)
+    {
+	if (i == size)
+	{
+	    glyphs_new = malloc (size * 2 * sizeof (FT_UInt));
+	    if (!glyphs_new)
+	    {
+		if (glyphs != glyphs_local)
+		    free (glyphs);
+		memset (extents, '\0', sizeof (XGlyphInfo));
+		return;
+	    }
+	    memcpy (glyphs_new, glyphs, size * sizeof (FT_UInt));
+	    size *= 2;
+	    if (glyphs != glyphs_local)
+		free (glyphs);
+	    glyphs = glyphs_new;
+	}
+	glyphs[i++] = XftCharIndex (dpy, pub, ucs4);
+	string += l;
+	len -= l;
+    }
+    XftGlyphExtents (dpy, pub, glyphs, i, extents);
+    if (glyphs != glyphs_local)
+	free (glyphs);
+}